Monthly Archives: September 2020
JavaScript/CSS/HTML || Modal.js – Simple Modal Dialog Prompt Using Vanilla JavaScript
The following is a module which allows for a simple modal popup dialog panel in vanilla JavaScript. This module allows for custom Yes/No prompts.
Options include allowing the modal to be dragged, resized, and closed on outer area click. Modal drag and resize supports touch (mobile) input.
Contents
1. Basic Usage
2. Available Options
3. Alert Dialog
4. Yes/No Dialog
5. Custom Buttons
6. Dialog Instance
7. Modal.js & CSS Source
8. More Examples
1. Basic Usage
Syntax is very straightforward. The following demonstrates adding a simple dialog to the page.
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// Add simple dialog. <script> (() => { // Adds a simple dialog to the page Modal.showDialog({ title: 'Save Content?', body: 'Content will be saved. Continue?', }); })(); </script> |
Sample:
The following example demonstrates how to add click events to the default dialog buttons. The ordering of the buttons on initialization defines its placement on the dialog.
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// Add click events. <script> (() => { // Add click events to the buttons Modal.showDialog({ title: 'Save Content?', body: 'Content will be saved. Continue?', buttons: { cancel: { onClick: (event) => { console.log(`${event.target.innerText} Button Clicked`); } }, ok: { onClick: (event) => { console.log(`${event.target.innerText} Button Clicked`); } } } }); })(); </script> |
2. Available Options
The options supplied to the ‘Modal.showDialog‘ function is an object that is made up of the following properties.
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// Available options Modal.showDialog({ title: 'Save Content?', // The title of the dialog body: 'Content will be saved. Continue?', // The content body of the dialog onShow: () => { // Optional. Function that allows to do something before show. Return false to stop showing process console.log(`Dialog is showing`); }, onHide: () => { // Optional. Function that allows to do something before hide. Return false to stop hidding process console.log(`Dialog is hiding`); }, onDestroy: () => { // Optional. Function that allows to do something before destroy. Return false to stop destroying process console.log(`Dialog is destroying`); }, closeOnOuterClick: false, // Optional. Determines if the dialog should close on outer dialog click. Default is False draggable: false, // Optional. Determines if the dialog is draggable. Default is False resizable: false, // Optional. Determines if the dialog is resizable. Default is False autoOpen: true, // Optional. Determines if the dialog should auto open. Default is True destroyOnHide: true, // Optional. Determines if the dialog should be removed from DOM after hiding. Default is True buttons: { // Optional. Allows to add custom buttons to the dialog custom1: { text: 'Custom Button', cssClass: '', visible: true, onClick: (event) => { console.log(`${event.target.innerText} Button Clicked`); } }, // ..... Additional buttons }, }); |
Supplying different options to ‘Modal.showDialog‘ can change its appearance. The following examples below demonstrate this.
3. Alert Dialog
The following example demonstrates an alert dialog.
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// Alert dialog. <script> (() => { // Alert Modal.showDialog({ title: 'Content Saved!', body: 'Content has been saved to your account', buttons: { ok: {} } }); })(); </script> |
Sample:
4. Yes/No Dialog
The following example demonstrates a yes/no dialog.
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// Yes/No dialog. <script> (() => { // Yes/No Modal.showDialog({ title: 'Continue?', body: 'Do you want to continue?', buttons: { no: {text: '😢 No'}, yes: {text: '😊 Yes'} } }); })(); </script> |
Sample:
5. Custom Buttons
The following example demonstrates multiple custom buttons.
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// Custom buttons. <script> (() => { // Custom buttons Modal.showDialog({ title: 'Save Content?', body: 'Content will be saved. Continue?', draggable: true, buttons: { custom1: { text: 'No Way!', cssClass: '', visible: true, onClick: (event) => { console.log(`${event.target.innerText} Button Clicked`); } }, custom2: { text: 'Maybe?', cssClass: '', visible: true, onClick: (event) => { console.log(`${event.target.innerText} Button Clicked`); } }, custom3: { text: 'Sure', cssClass: '', visible: true, onClick: (event) => { console.log(`${event.target.innerText} Button Clicked`); } }, }, }); })(); </script> |
Sample:
6. Dialog Instance
The following example demonstrates how to use the dialog instance to show and hide when needed.
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// Dialog Instance. <script> (() => { // Create dialog instance and show/hide when needed let dialog = Modal.showDialog({ title: 'Save Content?', body: 'Content will be saved. Continue?', autoOpen: false, }); //dialog.modal // The Javascript modal element dialog.show(); // Shows the modal popup //dialog.hide(); // Hides the modal popup //dialog.destroy(); // Hides the modal popup & removes it from the DOM })(); </script> |
7. Modal.js & CSS Source
8. More Examples
Below are more examples demonstrating the use of ‘Modal.js‘. Don’t forget to include the module when running the examples!
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<!-- // ============================================================================ // Author: Kenneth Perkins // Date: Sept 23, 2020 // Taken From: http://programmingnotes.org/ // File: modalDialog.html // Description: Demonstrates the use of Modal.js // ============================================================================ --> <!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <title>My Programming Notes Modal.js Demo</title> <style> .main { text-align:center; margin-left:auto; margin-right:auto; } .button { padding: 5px; background-color: #d2d2d2; height:100%; text-align:center; text-decoration:none; color:black; display: flex; justify-content: center; align-items: center; flex-direction: column; border-radius: 15px; cursor: pointer; width: 120px; border: none; font-size: 15px; font-family: "Roboto",sans-serif, Marmelad,"Lucida Grande",Arial,"Hiragino Sans GB",Georgia,"Helvetica Neue",Helvetica; } .button:hover { background-color:#bdbdbd; } .inline { display:inline-block; } </style> <!-- // Include module --> <link type="text/css" rel="stylesheet" href="./Modal.css"> <script type="text/javascript" src="./Modal.js"></script> </head> <body> <div class="main"> My Programming Notes Modal.js Demo <div style="margin-top: 20px;"> <div id="btnShow" class="inline button"> Show </div> </div> </div> <script> document.addEventListener("DOMContentLoaded", function(eventLoaded) { // Custom buttons let dialog = Modal.showDialog({ title: 'Save Content?', // The title of the dialog body: 'Content will be saved. Continue?', // The content body of the dialog onShow: () => { // Optional. Function that allows to do something before show. Return false to stop showing process console.log(`Dialog ${dialog.modal.id} is showing`); }, onHide: () => { // Optional. Function that allows to do something before hide. Return false to stop hidding process console.log(`Dialog ${dialog.modal.id} is hiding`); }, onDestroy: () => { // Optional. Function that allows to do something before destroy. Return false to stop destroying process console.log(`Dialog ${dialog.modal.id} is destroying`); }, closeOnOuterClick: false, // Optional. Determines if the dialog should close on outer dialog click. Default is False draggable: true, // Optional. Determines if the dialog is draggable. Default is False resizable: false, // Optional. Determines if the dialog is resizable. Default is False autoOpen: false, // Optional. Determines if the dialog should auto open. Default is True destroyOnHide: false, // Optional. Determines if the dialog should be removed from DOM after hiding. Default is True buttons: { // Optional. Allows to add custom buttons to the dialog custom1: { text: 'No Way!', cssClass: '', visible: true, onClick: (event) => { console.log(`${event.target.innerText} Button Clicked`); } }, custom2: { text: 'Maybe?', cssClass: '', visible: true, onClick: (event) => { console.log(`${event.target.innerText} Button Clicked`); } }, custom3: { text: 'Sure', cssClass: '', visible: true, onClick: (event) => { console.log(`${event.target.innerText} Button Clicked`); } }, }, }); setTimeout(() => { //dialog.modal // The Javascript modal element dialog.show(); // Shows the modal popup setTimeout(() => { dialog.hide(); // Hides the modal popup //dialog.destroy(); // Hides the modal popup & removes it from the DOM }, 2000); }, 200); // Show the modal document.querySelector('#btnShow').addEventListener('click', (event) => { dialog.show() }); }); </script> </body> </html><!-- // http://programmingnotes.org/ --> |
QUICK NOTES:
The highlighted lines are sections of interest to look out for.
The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.
JavaScript || How To Get The Minimum & Maximum Values In A Simple & Object Array
The following is a module with functions which demonstrates how to get the minimum and maximum values in a simple and object array.
The functions on this page allows for an optional selector function as a parameter, which makes them general enough to work on arrays of any type.
1. Simple Array
The example below demonstrates the use of ‘Utils.arrayMin‘ and ‘Utils.arrayMax‘ to get the minimum and maximum values from a simple array.
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// Simple Array <script> (() => { // Simple array let values = [ 4294967296, 1991, 466855135, 1987, 81125, ]; // Get the minimum and maximum array value console.log( Utils.arrayMin(values) ); console.log( Utils.arrayMax(values) ); })(); </script> // expected output: /* 1987 4294967296 */ |
2. Object Array
The example below demonstrates the use of ‘Utils.arrayMin‘ and ‘Utils.arrayMax‘ to get the minimum and maximum values from an object array.
In this example, a selector is used, which extracts the value to be used in the evaluation.
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// Object Array <script> (() => { // Object array let users = [ {USER:"bob", SCORE:2000, TIME:32, AGE:16, COUNTRY:"US"}, {USER:"jane", SCORE:4000, TIME:35, AGE:16, COUNTRY:"DE"}, {USER:"tim", SCORE:1000, TIME:30, AGE:17, COUNTRY:"UK"}, {USER:"mary", SCORE:1500, TIME:31, AGE:19, COUNTRY:"PL"}, {USER:"joe", SCORE:2500, TIME:33, AGE:18, COUNTRY:"US"}, {USER:"sally", SCORE:2000, TIME:30, AGE:16, COUNTRY:"CA"}, {USER:"yuri", SCORE:3000, TIME:34, AGE:19, COUNTRY:"RU"}, {USER:"anita", SCORE:2500, TIME:32, AGE:17, COUNTRY:"LV"}, {USER:"mark", SCORE:2000, TIME:30, AGE:18, COUNTRY:"DE"}, {USER:"amy", SCORE:1500, TIME:29, AGE:19, COUNTRY:"UK"} ]; // Get the minimum and maximum user score console.log( Utils.arrayMin(users, (user) => user.SCORE) ); console.log( Utils.arrayMax(users, (user) => user.SCORE) ); })(); </script> // expected output: /* 1000 4000 */ |
3. Mixed Array
The example below demonstrates the use of ‘Utils.arrayMin‘ and ‘Utils.arrayMax‘ to get the minimum and maximum values from a mixed array.
In this example, a selector is used, which extracts the value to be used in the evaluation.
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// Mixed Array <script> (() => { // Mixed array let mixedArray = [ [0, 'Aluminium', 0, 'Francis'], [1, 'Argon', 1, 'Ada'], [2, 'Brom', 2, 'John'], [3, 'Cadmium', 9, 'Marie'], [4, 'Fluor', 12, 'Marie'], [5, 'Gold', 1, 'Ada'], [6, 'Kupfer', 4, 'Ines'], [7, 'Krypton', 4, 'Joe'], [8, 'Sauerstoff', 0, 'Marie'], [9, 'Zink', 5, 'Max'] ]; // Get the minimum and maximum name length at index 1 console.log( Utils.arrayMin(mixedArray, (item) => item[1].length) ); console.log( Utils.arrayMax(mixedArray, (item) => item[1].length) ); })(); </script> // expected output: /* 4 10 */ |
4. Utils Namespace
The following is the Utils.js Namespace. Include this in your project to start using!
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// ============================================================================ // Author: Kenneth Perkins // Date: Sept 16, 2020 // Taken From: http://programmingnotes.org/ // File: Utils.js // Description: Javascript that handles general utility functions // ============================================================================ /** * NAMESPACE: Utils * USE: Handles general utility functions. */ var Utils = Utils || {}; (function(namespace) { 'use strict'; // Property to hold public variables and functions let exposed = namespace; /** * FUNCTION: arrayMax * USE: Returns the maximum value in a sequence. * @param array: Array to determine the maximum value of. * @param selector: Optional. A transform function to extract values from each element. * @return: The maximum value in the sequence. */ exposed.arrayMax = (array, selector = null) => { let value = arrayMinMax(array, compareType.max, selector); return value; } /** * FUNCTION: arrayMin * USE: Returns the minimum value in a sequence. * @param array: Array to determine the minimum value of. * @param selector: Optional. A transform function to extract values from each element. * @return: The minimum value in the sequence. */ exposed.arrayMin = (array, selector = null) => { let value = arrayMinMax(array, compareType.min, selector); return value; } let arrayMinMax = (array, type, selector = null) => { if (typeof selector !== 'function') { selector = (item) => item; } let value = array .map((item) => selector.call(array, item)) .reduce((x, y) => compare(x, y, type) ? x : y); return value; } let compare = (valueX, valueY, type) => { let result = valueX > valueY ? 1 : -1; if (type === compareType.min) { result *= -1; } return result > 0; } let compareType = Object.freeze({min: 1, max: 2}); (function (factory) { if (typeof define === 'function' && define.amd) { define([], factory); } else if (typeof exports === 'object') { module.exports = factory(); } }(function() { return namespace; })); }(Utils)); // http://programmingnotes.org/ |
QUICK NOTES:
The highlighted lines are sections of interest to look out for.
The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.
JavaScript/CSS/HTML || Placeholder.js – Simple Animated Floating Label For Textbox, Dropdown & Textarea Using Vanilla JavaScript
The following is a module which allows for a simple animated floating placeholder label for textbox, dropdown & textarea using vanilla javascript.
No special HTML markup is required.
Contents
1. Basic Usage
2. Placeholder HTML
3. Placeholder.js & CSS Source
4. More Examples
1. Basic Usage
Syntax is very straightforward. The following demonstrates adding and removing floating placeholders to elements.
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// Add & Remove Floating Placeholders. <script> (() => { // Add floating placeholder. It accepts either a string selector // or one or more Javascript elements. Placeholder.float('input:not([type="radio"]):not([type="checkbox"]), select, textarea'); // Remove floating placeholder. It accepts either a string selector // or one or more Javascript elements. Placeholder.remove(document.querySelectorAll('input:not([type="radio"]):not([type="checkbox"]), select, textarea')); })(); </script> |
‘Placeholder.float‘ and ‘Placeholder.remove‘ accepts either a string selector or one or more Javascript elements.
2. Placeholder HTML
The following is sample HTML used for the floating placeholder label. No special HTML markup is required. Simply supply an element with a ‘placeholder‘ attribute, and you’re all set!
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<!-- // Sample HTML --> <input type="text" placeholder="Name" /> <input type="email" placeholder="Email" /> <input type="password" placeholder="Password" /> <select name="gender" id="gender" placeholder="Gender" > <option value="" selected></option> <option value="male">Male</option> <option value="female">Female</option> <option value="na">Prefer Not To Say</option> </select> <textarea rows="4" cols="50" placeholder="Describe Yourself"></textarea> |
Sample – Blank:
Sample – Filled:
3. Placeholder.js & CSS Source
The following is the Placeholder.js Namespace & CSS Source. Include this in your project to start using!
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// ============================================================================ // Author: Kenneth Perkins // Date: Sept 9, 2020 // Taken From: http://programmingnotes.org/ // File: Placeholder.js // Description: Module that adds a floating placeholder label to an element // Example: // // Add Placeholder // Placeholder.float('selector') // // // Remove Placeholder // Placeholder.remove('selector') // ============================================================================ /** * NAMESPACE: Placeholder * USE: Handles Placeholder related functions */ var Placeholder = Placeholder || {}; (function(namespace) { 'use strict'; // -- Public data -- // Property to hold public variables and functions let exposed = namespace; // Set class names and other shared data const settings = { attributePlaceholder: 'placeholder', // Element class names classNameFloatingItem: '.floating-placeholder', classNameContainer: '.floating-placeholder-container', classNamePlaceholder: '.floating-placeholder-label', classNameActive: '.active', // Element data names dataNamePlaceholderCache: 'data-placeholder-cache', cleanClassName: (str) => { return str ? str.trim().replace('.', '') : ''; }, }; exposed.settings = settings; /** * FUNCTION: float * USE: Adds a floating placeholder to the selected elements. * @param element: One or more JavaScript element to add floating placeholder to. * @return: N/A. */ exposed.float = (element) => { let items = verifyElements(element); for (const item of items) { addPlaceholder(item); } } /** * FUNCTION: remove * USE: Removes a floating placeholder from the selected elements. * @param element: One or more JavaScript element to remove floating placeholder from. * @return: N/A. */ exposed.remove = (element) => { let items = verifyElements(element); for (const item of items) { removePlaceholder(item); } } // -- Private data -- let removePlaceholder = (element) => { let container = getContainer(element); let parentNode = container.parentNode; removeClass(element, settings.classNameFloatingItem); let placeholderText = getPlaceholderTextCache(element); setPlaceholderText(element, placeholderText); setPlaceholderTextCache(element, null); getEvents().forEach(eventInfo => { eventInfo.names.forEach(eventName => { element.removeEventListener(eventName, eventInfo.callback); }); }); parentNode.insertBefore(element, container); parentNode.removeChild(container); } let addPlaceholder = (element) => { addClass(element, settings.classNameFloatingItem); let placeholderText = verifyPlaceholderText(element); let container = getContainer(element) || createContainer(element); let placeholder = getPlaceholder(element) || createPlaceholder(container); placeholder.innerHTML = placeholderText; placeholder.htmlFor = element.id; getEvents().forEach(eventInfo => { registerEvents(element, eventInfo.names, eventInfo.callback); }); if (!isEmpty(element.value)) { floatPlaceholder(element); } else { resetPlaceholder(element); } setDetectChangeHandler(element); } let setDetectChangeHandler = (element, property = 'value') => { let elementPrototype = Object.getPrototypeOf(element); if (!elementPrototype.hasOwnProperty(property)) { return; } let descriptor = Object.getOwnPropertyDescriptor(elementPrototype, property); let newProps = { get: function () { return descriptor.get.apply(element, arguments); }, set: function (t) { setTimeout( () => { element.dispatchEvent(new Event(property + 'change')); }, 10); return descriptor.set.apply(element, arguments); } }; Object.defineProperty(element, property, newProps); } let floatPlaceholder = (element) => { let placeholder = getPlaceholder(element); if (!isNull(placeholder)) { addClass(placeholder, settings.classNameActive); } } let resetPlaceholder = (element) => { let placeholder = getPlaceholder(element); if (!isNull(placeholder)) { if (isEmpty(element.value)) { removeClass(placeholder, settings.classNameActive); } } } let getContainer = (element) => { return element.closest(settings.classNameContainer); } let getPlaceholder = (element) => { let container = getContainer(element); return !isNull(container) ? container.querySelector(settings.classNamePlaceholder) : null; } let createPlaceholder = (container) => { let placeholder = document.createElement('label'); addClass(placeholder, settings.classNamePlaceholder); container.appendChild(placeholder); return placeholder; } let createContainer = (element) => { let container = document.createElement('div'); let parentNode = element.parentNode; addClass(container, settings.classNameContainer); parentNode.insertBefore(container, element); container.appendChild(element); return container; } let verifyPlaceholderText = (element) => { if (isEmpty(element.id)) { element.id = `floating_placeholder_${randomFromTo(1271991, 7281987)}`; } let placeholderText = getPlaceholderText(element); if (!isEmpty(placeholderText)) { setPlaceholderTextCache(element, placeholderText); } setPlaceholderText(element, null); return getPlaceholderTextCache(element); } let setPlaceholderText = (element, value) => { addData(element, {key: settings.attributePlaceholder, value: value}); } let getPlaceholderText = (element) => { let value = getData(element, settings.attributePlaceholder); return value; } let setPlaceholderTextCache = (element, value) => { addData(element, {key: settings.dataNamePlaceholderCache, value: value}); } let getPlaceholderTextCache = (element) => { let value = getData(element, settings.dataNamePlaceholderCache); return value; } let floatPlaceholderEvent = (event) => { let element = event.currentTarget; let nodeName = element.nodeName.toLowerCase(); switch (event.type) { case 'focus': if (nodeName === 'select') { return; } break; case 'keyup': if (nodeName === 'select') { if (isEmpty(element.value)) { return; } } else { return; } break; } floatPlaceholder(element); } let resetPlaceholderEvent = (event) => { let element = event.currentTarget; let nodeName = element.nodeName.toLowerCase(); switch (event.type) { case 'keyup': if (nodeName === 'select') { if (!isEmpty(element.value)) { return; } } else { return; } break; } resetPlaceholder(element); } let registerEvents = (element, eventNames, func) => { eventNames.forEach((eventName, index) => { element.removeEventListener(eventName, func); element.addEventListener(eventName, func); }); } let addClass = (element, cssClass) => { cssClass = settings.cleanClassName(cssClass); let modified = false; if (cssClass.length > 0 && !hasClass(element, cssClass)) { element.classList.add(cssClass) modified = true; } return modified; } let removeClass = (element, cssClass) => { cssClass = settings.cleanClassName(cssClass); let modified = false; if (cssClass.length > 0 && hasClass(element, cssClass)) { element.classList.remove(cssClass); modified = true; } return modified; } let hasClass = (element, cssClass) => { cssClass = settings.cleanClassName(cssClass); return element.classList.contains(cssClass); } let isNull = (item) => { return undefined === item || null === item; } let isEmpty = (str) => { return isNull(str) || String(str).trim().length < 1; } let randomFromTo = (from, to) => { return Math.floor(Math.random() * (to - from + 1) + from); } let addData = (element, data) => { if (isNull(data)) { return; } else if (!Array.isArray(data)) { data = [data]; } data.forEach(item => { if (!isNull(item.value)) { element.setAttribute(item.key, item.value); } else { removeData(element, item); } }); } let removeData = (element, data) => { if (isNull(data)) { return; } else if (!Array.isArray(data)) { data = [data]; } data.forEach(item => { let key = item.key || item; element.removeAttribute(key); }); } let getData = (element, data) => { if (isNull(data)) { return null; } else if (!Array.isArray(data)) { data = [data]; } let results = []; data.forEach(item => { let key = item.key || item; results.push(element.getAttribute(key)); }); return results.length == 1 ? results[0] : results; } let isString = (item) => { return 'string' === typeof item; } let verifyElements = (items) => { if (isNull(items)) { throw new TypeError('No elements specified'); } else if (isString(items)) { items = document.querySelectorAll(items); } if (!isArrayLike(items)) { items = [items]; } return items; } // see if it looks and smells like an iterable object, and do accept length === 0 let isArrayLike = (item) => { return ( Array.isArray(item) || (!!item && typeof item === "object" && typeof (item.length) === "number" && (item.length === 0 || (item.length > 0 && (item.length - 1) in item) ) ) ); } let getEvents = () => { return [ {names: ['click', 'focus', 'keyup', 'valuechange'], callback: floatPlaceholderEvent}, {names: ['blur', 'focusout', 'keyup', 'valuechange'], callback: resetPlaceholderEvent}, ]; } (function (factory) { if (typeof define === 'function' && define.amd) { define([], factory); } else if (typeof exports === 'object') { module.exports = factory(); } }(function() { return namespace; })); }(Placeholder)); // http://programmingnotes.org/ |
The following is Placeholder.css.
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/* // ============================================================================ // Author: Kenneth Perkins // Date: Sept 9, 2020 // Taken From: http://programmingnotes.org/ // File: Placeholder.css // Description: CSS for the floating placeholder // ============================================================================ */ @import url('https://fonts.googleapis.com/css?family=Roboto:400,400italic,500,500italic,700,700italic,900,900italic,300italic,300,100italic,100'); .floating-placeholder { align-self: flex-end; } .floating-placeholder:focus { border: none; outline:none; background-color: #fff9e5; border-bottom: 1px solid orangered; } .floating-placeholder-label { position: absolute; top: 0; left: 0; font-size: 16px; pointer-events: none; transition: all 150ms ease-in-out; font-family: inherit; } .floating-placeholder-label.active { top: -12.5px; left: -9px; font-size: 11px; font-style: italic; } .floating-placeholder-container { position: relative; margin-bottom: 25px; display: flex; color: #898d8d; font-family: "Roboto",sans-serif, Marmelad,"Lucida Grande",Arial,"Hiragino Sans GB",Georgia,"Helvetica Neue",Helvetica; } .floating-placeholder-container input, .floating-placeholder-container textarea, .floating-placeholder-container select { border: 0; border-bottom: 1px solid #767c7c; background: transparent; width: 100%; padding: 8px 0 5px 0.15em; font-size: 16px; font-family: inherit; color: black; } .floating-placeholder-container select { appearance: none; background-image: url("data:image/svg+xml;utf8,<svg fill='black' height='1' viewBox='0 0 30 30' width='1' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>"); background-size: 35px 35px; background-repeat: no-repeat; background-position-x: 100%; background-position-y: 50%; } .floating-placeholder-container select::-ms-expand { display: none; } .floating-placeholder-container select option { color: black; background-color: white; } /* // http://programmingnotes.org/ */ |
4. More Examples
Below are more examples demonstrating the use of ‘Placeholder.js‘. Don’t forget to include the module when running the examples!
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<!-- // ============================================================================ // Author: Kenneth Perkins // Date: Sept 9, 2020 // Taken From: http://programmingnotes.org/ // File: placeholderDemo.html // Description: Demonstrates the use of Placeholder.js // ============================================================================ --> <!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <title>My Programming Notes Placeholder.js Demo</title> <style> .main { text-align:center; margin-left:auto; margin-right:auto; } .inline { display:inline-block; } .center { display: flex; justify-content: center; align-items: center; } .container { width: 280px; border: 1px solid lightgrey; padding: 60px; border-radius: 10px; margin-top: 30px; background-color: #f9f9f9; box-shadow: 0 0 3px rgba(0,0,0,0.3); } body { background-image: url("https://images.pexels.com/photos/3116416/pexels-photo-3116416.jpeg?auto=compress&cs=tinysrgb&dpr=3&h=750&w=1260"); background-position: center; background-origin: content-box; background-repeat: no-repeat; background-size: cover; min-height:100vh; } </style> <!-- // Include module --> <link type="text/css" rel="stylesheet" href="./Placeholder.css"> <script type="text/javascript" src="./Placeholder.js"></script> </head> <body> <div class="main"> My Programming Notes Placeholder.js Demo <div class="center"> <div class="container"> <input type="text" placeholder="Name" /> <input type="email" placeholder="Email" /> <input type="password" placeholder="Password" /> <select name="gender" id="gender" placeholder="Gender" > <option value="" selected></option> <option value="male">Male</option> <option value="female">Female</option> <option value="na">Prefer Not To Say</option> </select> <textarea rows="4" cols="50" placeholder="Describe Yourself"></textarea> </div> </div> </div> <script> document.addEventListener("DOMContentLoaded", function(eventLoaded) { // Add floating placeholder to the selected elements Placeholder.float('input:not([type="radio"]):not([type="checkbox"]), select, textarea'); // Remove floating placeholder to the selected elements //Placeholder.remove(document.querySelectorAll('input:not([type="radio"]):not([type="checkbox"]), select, textarea')); }); </script> </body> </html><!-- // http://programmingnotes.org/ --> |
QUICK NOTES:
The highlighted lines are sections of interest to look out for.
The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.
JavaScript/CSS/HTML || Modal.js – Simple Modal Popup Panel Using Vanilla JavaScript
The following is a module which allows for a simple modal popup panel in vanilla JavaScript. Options include allowing the modal to be dragged, resized, and closed on outer area click.
Modal drag and resize supports touch (mobile) input.
Contents
1. Basic Usage
2. Modal HTML
3. Initialize Modal Options
4. Modal Dialog
5. Modal.js & CSS Source
6. More Examples
1. Basic Usage
Syntax is very straightforward. The following demonstrates showing and hiding a modal popup.
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// Opening & Closing Modal. <script> (() => { // Shows the modal popup. It accepts either a string selector // or a Javascript element Modal.show('selector'); // Hides the modal popup. It accepts either a string selector // or a Javascript element Modal.hide(document.querySelector('selector')); })(); </script> |
‘Modal.show‘ and ‘Modal.hide‘ accepts either a string selector or a Javascript element.
2. Modal HTML
The following is the HTML used to display the modal. The attributes supplied to the ‘modal’ element specifies whether it is allowed to be dragged, resized, or closed on outer area click.
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<!-- // Available options --> <!-- The Modal Background--> <section id="modalExample" class="modal" data-closeOnOuterClick="true" data-draggable="true" data-resizable="true" > <!-- Modal Panel --> <article class="modal-panel"> <header class="modal-header"> <div class="modal-header-text"> Modal Header </div> <div class="modal-close-button"></div> </header> <div class="modal-body"> <p>Some text in the Modal Body</p> <p>Some other text...</p> </div> <footer class="modal-footer"> <div class="modal-footer-text"> Modal Footer </div> </footer> </article> </section> |
Sample:
3. Initialize Modal Options
In order for the options on the modal to take effect, it needs to be initialized.
The following example demonstrates initializing the modal popup options.
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// Initialize options. <script> document.addEventListener("DOMContentLoaded", function(eventLoaded) { // Sets up the modal option button clicks Modal.init(); }); </script> |
Note: ‘Modal.init‘ only needs to be called once. It will initialize all modals on the page.
4. Modal Dialog
The following demonstrates adding a simple dialog to the page.
For more options, click here!
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// Add simple dialog. <script> (() => { // Adds a simple dialog to the page Modal.showDialog({ title: 'Save Content?', body: 'Content will be saved. Continue?', }); })(); </script> |
Sample:
5. Modal.js & CSS Source
The following is the Modal.js Namespace & CSS Source. Include this in your project to start using!
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// ============================================================================ // Author: Kenneth Perkins // Date: Sept 4, 2020 // Taken From: http://programmingnotes.org/ // File: Modal.js // Description: Javascript that handles modal popup related functions // Example: // // Show Modal // Modal.show('selector') // // // Hide Modal // Modal.hide('selector') // ============================================================================ /** * NAMESPACE: Modal * USE: Handles Modal related functions */ var Modal = Modal || {}; (function(namespace) { 'use strict'; // -- Public data -- // Property to hold public variables and functions let exposed = namespace; // Set class names and other shared data const settings = { handleTypeResize: 'resize', handleTypeDrag: 'drag', // Element class names classNameModal: '.modal', classNameModalPanel: '.modal-panel', classNameCloseButton: '.modal-close-button', classNameModalHeader: '.modal-header', classNameModalHeaderText: '.modal-header-text', classNameModalBody: '.modal-body', classNameModalFooter: '.modal-footer', classNameModalFooterText: '.modal-footer-text', classNameDraggable: '.modal-draggable', classNameDraggableIcon: '.icon', classNameShow: '.show', classNameResizable: '.modal-resizable', classNameResizableIcon: '.icon', classNameDialog: '.dialog', classNameButton: '.modal-button', classNameButtonCancel: '.cancel', classNameButtonOK: '.ok', classNameButtonContainer: '.buttonContainer', classNameResizeMargin: '.resizeMargin', // Element data names dataNameCloseOnOuterClick: 'data-closeOnOuterClick', dataNameDraggable: 'data-draggable', dataNameIsDraggable: 'data-isDraggable', dataNameResizable: 'data-resizable', dataNameIsResizable: 'data-isResizable', cleanClassName: (str) => { return str ? str.trim().replace('.', '') : ''; }, }; exposed.settings = settings; /** * FUNCTION: init * USE: Initializes the modal button clicks. * @param element: JavaScript element to search for modals. * @return: N/A. */ exposed.init = (element = document) => { addClickEvents(element); } /** * FUNCTION: show * USE: Shows the modal popup. * @param element: JavaScript element/String selector of the modal to show. * @return: N/A. */ exposed.show = (element) => { element = verifyElement(element); addClass(element, settings.classNameShow); } /** * FUNCTION: hide * USE: Hides the modal popup. * @param element: JavaScript element/String selector of the modal to hide. * @return: N/A. */ exposed.hide = (element) => { element = verifyElement(element); resetPosition(element); removeClass(element, settings.classNameShow); } /** * FUNCTION: getPanel * USE: Returns the modal panel element. * @param element: JavaScript element/String selector of the modal. * @return: The modal panel element. */ exposed.getPanel = (element) => { element = verifyElement(element); return element.querySelector(settings.classNameModalPanel); } /** * FUNCTION: getHeader * USE: Returns the modal header element. * @param element: JavaScript element/String selector of the modal. * @return: The modal header element. */ exposed.getHeader = (element) => { element = verifyElement(element); return element.querySelector(settings.classNameModalHeader); } /** * FUNCTION: getHeaderText * USE: Returns the modal header text element. * @param element: JavaScript element/String selector of the modal. * @return: The modal header text element. */ exposed.getHeaderText = (element) => { element = verifyElement(element); return element.querySelector(settings.classNameModalHeaderText); } /** * FUNCTION: getBody * USE: Returns the modal body element. * @param element: JavaScript element/String selector of the modal. * @return: The modal body element. */ exposed.getBody = (element) => { element = verifyElement(element); return element.querySelector(settings.classNameModalBody); } /** * FUNCTION: getFooter * USE: Returns the modal footer element. * @param element: JavaScript element/String selector of the modal. * @return: The modal footer element. */ exposed.getFooter = (element) => { element = verifyElement(element); return element.querySelector(settings.classNameModalFooter); } /** * FUNCTION: getFooterText * USE: Returns the modal footer text element. * @param element: JavaScript element/String selector of the modal. * @return: The modal footer text element. */ exposed.getFooterText = (element) => { element = verifyElement(element); return element.querySelector(settings.classNameModalFooterText); } /** * FUNCTION: showDialog * USE: Shows a modal dialog box with an OK/Cancel button. * @param options: An object of initialization options. * Its made up of the following properties: * { * title: The title of the dialog * body: The content body of the dialog * onShow(): Optional. Function that allows to do something before show. * Return false to stop showing process * onHide(): Optional. Function that allows to do something before hide. * Return false to stop hidding process * onDestroy(): Optional. Function that allows to do something before * destroy. Return false to stop destroying process * closeOnOuterClick: Optional. Determines if the dialog should close * on outer dialog click. Default is False * draggable: Optional. Determines if the dialog is draggable. * Default is False * resizable: Optional. Determines if the dialog is resizable. * Default is False * autoOpen: Optional. Determines if the dialog should auto open. * Default is True * draggable: Optional. Determines if the dialog is draggable. * Default is False * destroyOnHide: Optional. Determines if the dialog should be removed * from DOM after hiding. Default is True * buttons: Optional. Object allows to add custom buttons to the dialog * } * @return: The modal dialog object. */ exposed.showDialog = (options) => { options = verifyOptions(options); let dialog = createDialog(options); if (toBoolean(options.autoOpen)) { dialog.show(); } return dialog; } // -- Private data -- let verifyOptions = (options) => { if (typeof options !== 'object') { let body = options; options = {}; options.body = body; } return options; } let createDialog = (options) => { let defaultButtons = { cancel: { text: 'Cancel', cssClass: settings.classNameButtonCancel, visible: true, }, ok: { text: 'OK', cssClass: settings.classNameButtonOK, visible: true, }, }; copyDefaults(options, defaultButtons); let modalButtons = options.buttons; let container = document.body; let modal = createElement('section', [settings.classNameModal, settings.classNameDialog]); let modalPanel = createElement('article', [settings.classNameModalPanel, settings.classNameDialog]); let modalHeader = createElement('header', [settings.classNameModalHeader, settings.classNameDialog]); let modalHeaderText = createElement('div', [settings.classNameModalHeaderText, settings.classNameDialog]); let modalBody = createElement('div', [settings.classNameModalBody, settings.classNameDialog]); let modalFooter = createElement('footer', [settings.classNameModalFooter, settings.classNameDialog]); let buttonContainer = createElement('div', [settings.classNameButtonContainer]); modal.appendChild(modalPanel); modalPanel.appendChild(modalHeader); modalHeader.appendChild(modalHeaderText); modalPanel.appendChild(modalBody); modalPanel.appendChild(modalFooter); modalFooter.appendChild(buttonContainer); let showHeaderCloseButton = true; let keys = Object.keys(modalButtons); keys.forEach((prop, index) => { prop = prop.toLowerCase(); let buttonOptions = modalButtons[prop]; if (!isNull(buttonOptions.visible) && !toBoolean(buttonOptions.visible)) { return false; } let text = buttonOptions.text || ''; let cssClass = buttonOptions.cssClass || ''; let button = createElement('button', [settings.classNameButton, settings.classNameDialog, cssClass]); button.innerHTML = !isNull(text) && isEmpty(text) ? ' ' : text; buttonContainer.appendChild(button) registerEvents(button, ['click'], (eventClick) => { if (buttonOptions.onClick) { let value = buttonOptions.onClick.call(button, eventClick); if (!isNull(value) && !value) { return; } } hide(options.destroyOnHide); }); if ((index + 1) === keys.length) { if (toBoolean(options.resizable)) { addClass(button, settings.classNameResizeMargin); } } showHeaderCloseButton = false; }); if (showHeaderCloseButton) { let modalHeaderClose = createElement('div', [settings.classNameCloseButton, settings.classNameDialog]); modalHeader.appendChild(modalHeaderClose); registerEvents(modalHeaderClose, ['click'], (eventClick) => { hide(options.destroyOnHide); }); } modalHeaderText.innerHTML = options.title || ''; modalBody.innerHTML = options.body || ''; modal.id = `modal_${randomFromTo(1271991, 7281987)}`; if (toBoolean(options.closeOnOuterClick)) { modal.setAttribute(settings.dataNameCloseOnOuterClick, options.closeOnOuterClick); } if (toBoolean(options.draggable)) { modal.setAttribute(settings.dataNameDraggable, options.draggable); } if (toBoolean(options.resizable)) { modal.setAttribute(settings.dataNameResizable, options.resizable); } container.appendChild(modal); options.autoOpen = !isNull(options.autoOpen) ? options.autoOpen : true; if (!options.autoOpen) { if (isNull(options.destroyOnHide)) { options.destroyOnHide = false; } } options.destroyOnHide = !isNull(options.destroyOnHide) ? options.destroyOnHide : true; let show = () => { if (options.onShow) { let value = options.onShow.call(this); if (!isNull(value) && !value) { return; } } setTimeout(()=> { exposed.show(modal); }, 10); } let hide = (destroyModal = false) => { if (options.onHide) { let value = options.onHide.call(this); if (!isNull(value) && !value) { return; } } exposed.hide(modal); if (destroyModal) { setTimeout(()=> { destroy(); }, 500); } } let destroy = () => { if (options.onDestroy) { let value = options.onDestroy.call(this); if (!isNull(value) && !value) { return; } } if (!isDestroyed()) { container.removeChild(modal); } } let isDestroyed = () => { return !container.contains(modal); } let isShowing = () => { return hasClass(modal, settings.classNameShow); } addModalClickEvents(modal); if (getCoords(modalFooter).position === 'absolute') { modalFooter.style.position = 'relative'; let coords = getCoords(modalFooter); modalPanel.style['min-width'] = coords.width + 'px'; modalBody.style['padding-bottom'] = coords.height + 'px'; modalFooter.style.position = null; } return { modal: modal, show: () => { show(); }, hide: () => { hide(options.destroyOnHide); }, destroy: () => { hide(true); }, isDestroyed: () => { return isDestroyed(); }, isShowing: () => { return isShowing(); } }; } let copyDefaults = (options, defaultButtons) => { if (isNull(options.buttons)) { options.buttons = defaultButtons return; } for (let prop in options.buttons) { prop = prop.toLowerCase(); if (!defaultButtons.hasOwnProperty(prop)) { continue; } options.buttons[prop] = Object.assign(defaultButtons[prop], options.buttons[prop]) } } let createElement = (type, classes) => { let element = document.createElement(type); if (!isNull(classes)) { classes.forEach(item => { addClass(element, item); }); } return element; } let addClickEvents = (element) => { // Add misc click events for the modals let modals = element.querySelectorAll(settings.classNameModal); modals.forEach((modal, index) => { addModalClickEvents(modal, index); }); } let addModalClickEvents = (modal, index = 0) => { let registerCloseOnOuterClick = false; // Add button clicks for the close button let closeButton = modal.querySelector(settings.classNameCloseButton); if (!isNull(closeButton)) { registerEvents(closeButton, ['click'], closeButtonEvent); } // Add functionalty to make the modal draggable if (shouldDrag(modal) && !isDraggable(modal)) { // Get elements and make sure they exist let panel = exposed.getPanel(modal); if (isNull(panel)) { throw new TypeError(`Unable to make Modal #${index + 1} draggable. Reason: Modal has no 'Modal Panel' associated with it.`); } // If a header exists, attach a drag handle to it let handle = getHandle(modal, settings.handleTypeDrag); if (isNull(handle)) { let header = exposed.getHeader(modal); if (!isNull(header)) { handle = createHandle(header, settings.handleTypeDrag); } else { addClass(panel, settings.classNameDraggable); } } makeDraggable({ element: panel, handle: handle, keepInViewPort: true, }); // Mark that this modal is draggable setIsDraggable(modal, true) } // Add functionalty to make the modal resizable if (shouldResize(modal) && !isResizable(modal)) { // Get elements and make sure they exist let panel = exposed.getPanel(modal); if (isNull(panel)) { throw new TypeError(`Unable to make Modal #${index + 1} resizable. Reason: Modal has no 'Modal Panel' associated with it.`); } // If a footer exists, attach a resize handle to it let handle = getHandle(modal, settings.handleTypeResize); if (isNull(handle)) { let footer = exposed.getFooter(modal); if (!isNull(footer)) { handle = createHandle(footer, settings.handleTypeResize); } else { addClass(panel, settings.classNameResizable); } } makeResizable({ element: panel, handle: handle, keepInViewPort: true, }); // Mark that this modal is resizable setIsResizable(modal, true); } // Check to see if we need to register the close on click event if (!registerCloseOnOuterClick) { registerCloseOnOuterClick = shouldCloseOnOuterClick(modal); } // Determine if the modal should close if the outer area is clicked if (registerCloseOnOuterClick) { registerEvents(document, ['click'], backgroundHideEvent); } } let registerEvents = (element, eventNames, func) => { eventNames.forEach((eventName, index) => { element.removeEventListener(eventName, func); element.addEventListener(eventName, func); }); } let closeButtonEvent = (event) => { let closeButton = event.target || event.currentTarget; if (isNull(closeButton)) { return; } let modal = closeButton.closest(settings.classNameModal); exposed.hide(modal); } let backgroundHideEvent = (event) => { let target = event.target; if (isNull(target) || !isElement(target) || !hasClass(target, settings.classNameModal) || !hasClass(target, settings.classNameShow) || !shouldCloseOnOuterClick(target)) { return; } exposed.hide(target); } let createHandle = (container, type) => { let handle = document.createElement('div'); switch (type) { case settings.handleTypeResize: addClass(handle, settings.classNameResizable); addClass(handle, settings.classNameResizableIcon); break; case settings.handleTypeDrag: addClass(handle, settings.classNameDraggable); addClass(handle, settings.classNameDraggableIcon); break; default: throw new TypeError(`Unknown handle type: ${type}`); break; } handle.setAttribute('tabindex', 0); container.appendChild(handle); return handle; } let getHandle = (element, type) => { let selector = null; switch (type) { case settings.handleTypeResize: selector = `${settings.classNameResizable}${settings.classNameResizableIcon}`; break; case settings.handleTypeDrag: selector = `${settings.classNameDraggable}${settings.classNameDraggableIcon}`; break; default: throw new TypeError(`Unknown handle type: ${type}`); break; } return element.querySelector(selector); } let makeResizable = (options) => { let resizable = options.element || options; let handle = options.handle || resizable; let keepInViewPort = !isNull(options.keepInViewPort) ? options.keepInViewPort : false; let coords = getCoords(resizable); let initialWidth = coords.width; let initialHeight = coords.height; let mouseDown = (event) => { event.stopPropagation(); // Get the mouse down position of the element let coords = getCoords(resizable); let offsetX = event.clientX - coords.width; let offsetY = event.clientY - coords.height; let moveElement = (event) => { // Get the new position let newWidth = (event.clientX - offsetX); let newHeight = (event.clientY - offsetY); // Make sure the width/height is never less than the initial values newWidth = Math.max(newWidth, initialWidth); newHeight = Math.max(newHeight, initialHeight); setPosition(resizable, {width: newWidth, height: newHeight}); if (keepInViewPort && !isInViewport(resizable)) { let bounding = resizable.getBoundingClientRect(); let viewInfo = getViewportInfo(); let viewportHeight = viewInfo.height; let viewportWidth = viewInfo.width; if (bounding.bottom > viewportHeight) { newHeight -= Math.abs(bounding.bottom - viewportHeight); } if (bounding.right > viewportWidth) { newWidth -= Math.abs(bounding.right - viewportWidth); } setPosition(resizable, {width: newWidth, height: newHeight}); } } let reset = (event) => { document.removeEventListener('mousemove', moveElement); document.removeEventListener('mouseup', reset); } document.addEventListener('mouseup', reset); document.addEventListener('mousemove', moveElement); } addTouchSupport(handle); handle.addEventListener('mousedown', mouseDown); } let makeDraggable = (options) => { let draggable = options.element || options; let handle = options.handle || draggable; let keepInViewPort = !isNull(options.keepInViewPort) ? options.keepInViewPort : false; let mouseDown = (event) => { // Get the mouse down position of the element let coords = getCoords(draggable); let offsetX = event.clientX - coords.left; let offsetY = event.clientY - coords.top; let moveElement = (event) => { // Get the new position let newLeft = event.clientX - offsetX; let newTop = event.clientY - offsetY; setPosition(draggable, {left: newLeft, top: newTop}); if (keepInViewPort && !isInViewport(draggable)) { let bounding = draggable.getBoundingClientRect(); let viewInfo = getViewportInfo(); let viewportHeight = viewInfo.height; let viewportWidth = viewInfo.width; if (bounding.left < 0) { newLeft += Math.abs(bounding.left); } if (bounding.top < 0) { newTop += Math.abs(bounding.top); } if (bounding.bottom > viewportHeight) { newTop -= Math.abs(bounding.bottom - viewportHeight); } if (bounding.right > viewportWidth) { newLeft -= Math.abs(bounding.right - viewportWidth); } setPosition(draggable, {left: newLeft, top: newTop}); } } let reset = (event) => { document.removeEventListener('mousemove', moveElement); document.removeEventListener('mouseup', reset); } document.addEventListener('mouseup', reset); document.addEventListener('mousemove', moveElement); } addTouchSupport(handle); handle.addEventListener('mousedown', mouseDown); } // Check to make sure the element will be within our viewport boundary let isInViewport = (element) => { let bounding = element.getBoundingClientRect(); let viewInfo = getViewportInfo(); return ( bounding.top >= 0 && bounding.left >= 0 && bounding.bottom <= viewInfo.height && bounding.right <= viewInfo.width ); } let getViewportInfo = () => { return { height: Math.max(window.innerHeight || 0, document.documentElement.clientHeight || 0), width: Math.max(window.innerWidth || 0, document.documentElement.clientWidth || 0), }; } let getCoords = (element) => { let computedStyle = window.getComputedStyle(element); let intProps = ['left', 'top', 'width', 'height']; let result = {}; for (const prop of intProps) { result[prop] = parseInt(computedStyle[prop], 10) || parseInt(element.style[prop], 10) || 0; } let stringProps = ['position']; for (const prop of stringProps) { result[prop] = (computedStyle[prop] || element.style[prop]).toLowerCase(); } if (result.position !== 'relative') { if (!result.left) { result.left = element.offsetLeft || 0; } if (!result.top) { result.top = element.offsetTop || 0; } if (!result.width) { result.width = element.offsetWidth || 0; } if (!result.height) { result.height = element.offsetHeight || 0; } } return result; } let addTouchSupport = (element) => { let events = ['touchstart', 'touchmove', 'touchend', 'touchcancel']; registerEvents(element, events, touchConverter); } let touchConverter = (event) => { // stop touch event event.stopPropagation(); event.preventDefault(); let touches = event.changedTouches; if (!touches || touches.length < 1) { return; } let first = touches[0]; let target = first.target; let type = ''; switch (event.type) { case 'touchstart': type = 'mousedown'; break; case 'touchmove': type = 'mousemove'; break; case 'touchend': case 'touchcancel': type = 'mouseup'; break; default: return; } let simulatedEvent = null; try { simulatedEvent = new MouseEvent(type, { bubbles: true, cancelable: true, view: window, screenX: first.screenX, screenY: first.screenY, clientX: first.clientX, clientY: first.clientY, }); } catch (e) { simulatedEvent = document.createEvent('MouseEvent'); simulatedEvent.initMouseEvent(type, true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY, false, false, false, false, 0 /*left*/, null); } target.dispatchEvent(simulatedEvent); } let resetPosition = (element) => { let panel = exposed.getPanel(element); if (isNull(panel)) { return; } setPosition(panel, {left: null, top: null, width: null, height: null}); } let setPosition = (element, options) => { for (const prop in options) { if (prop in element.style) { let value = options[prop]; element.style[prop] = !isNull(value) ? parseInt(value, 10) + 'px' : value; } } } let shouldCloseOnOuterClick = (element) => { let value = element.getAttribute(settings.dataNameCloseOnOuterClick); return toBoolean(value); } let shouldDrag = (element) => { let value = element.getAttribute(settings.dataNameDraggable); return toBoolean(value); } let setIsDraggable = (element, value) => { element.setAttribute(settings.dataNameIsDraggable, value); } let isDraggable = (element) => { let value = element.getAttribute(settings.dataNameIsDraggable); return toBoolean(value); } let shouldResize = (element) => { let value = element.getAttribute(settings.dataNameResizable); return toBoolean(value); } let setIsResizable = (element, value) => { element.setAttribute(settings.dataNameIsResizable, value); } let isResizable = (element) => { let value = element.getAttribute(settings.dataNameIsResizable); return toBoolean(value); } let verifyElement = (element) => { if (isString(element)) { element = document.querySelector(element); } if (isNull(element)) { throw new TypeError(`Unable to process. Element provided is null`); } else if (!isElement(element)) { throw new TypeError(`Unable to process element of type: ${typeof element}. Reason: '${element}' is not an HTMLElement.`); } return element; } let addClass = (element, cssClass) => { cssClass = settings.cleanClassName(cssClass); let modified = false; if (cssClass.length > 0 && !hasClass(element, cssClass)) { element.classList.add(cssClass) modified = true; } return modified; } let removeClass = (element, cssClass) => { cssClass = settings.cleanClassName(cssClass); let modified = false; if (cssClass.length > 0 && hasClass(element, cssClass)) { element.classList.remove(cssClass); modified = true; } return modified; } let hasClass = (element, cssClass) => { cssClass = settings.cleanClassName(cssClass); return element.classList.contains(cssClass); } let isString = (item) => { return 'string' === typeof item; } let isNull = (item) => { return undefined === item || null === item; } let isElement = (item) => { let value = false; try { value = item instanceof HTMLElement || item instanceof HTMLDocument; } catch (e) { value = (typeof item==="object") && (item.nodeType===1) && (typeof item.style === "object") && (typeof item.ownerDocument ==="object"); } return value; } let toBoolean = (value) => { value = String(value).trim().toLowerCase(); let ret = false; switch (value) { case 'true': case 'yes': case '1': ret = true; break; } return ret; } let isEmpty = (str) => { return isNull(str) || String(str).trim().length < 1; } let randomFromTo = (from, to) => { return Math.floor(Math.random() * (to - from + 1) + from); } (function (factory) { if (typeof define === 'function' && define.amd) { define([], factory); } else if (typeof exports === 'object') { module.exports = factory(); } }(function() { return namespace; })); }(Modal)); // http://programmingnotes.org/ |
The following is Modal.css.
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/* // ============================================================================ // Author: Kenneth Perkins // Date: Sept 4, 2020 // Taken From: http://programmingnotes.org/ // File: Modal.css // Description: CSS for the modal popup // ============================================================================ */ @import url('https://fonts.googleapis.com/css?family=Roboto:400,400italic,500,500italic,700,700italic,900,900italic,300italic,300,100italic,100'); /* The Modal (background) */ .modal { position: fixed; z-index: 1; padding-top: 60px; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.35); opacity: 0; visibility: hidden; transform: scale(1.1); transition: visibility 0s linear 0.25s, opacity 0.25s 0s, transform 0.25s; display: flex; justify-content: center; } /* Modal Content */ .modal-panel { position: absolute; background-color: #fefefe; margin: auto; padding: 0; border: 1px solid #888; min-width: 400px; max-width: 80%; box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19); border-radius: 10px; min-height: 135px; display: table; } .modal-close-button { position: absolute; color: white; font-size: 28px; display: inline-block; text-decoration: none; cursor: pointer; right: 0; margin-right: 15px; } .modal-close-button:hover, .modal-close-button:focus { color: black; } .modal-close-button:after { content: '×'; } .modal-body { padding-bottom: 52px; } .modal-header, .modal-footer { padding: 2px; background-color: #064685; color: white; min-height: 50px; box-sizing: border-box; text-align: center; } .modal-header { border-top-left-radius: 6px; border-top-right-radius: 6px; } .modal-footer { border-bottom-left-radius: 6px; border-bottom-right-radius: 6px; bottom: 0; position: absolute; width: 99.8%; transform: translateY(1%); } .modal-header-text, .modal-footer-text { font-size: 19px; display: inline-block; max-width: 80%; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; margin-top: auto; transform: translateY(50%); } .modal-header-text.bold, .modal-footer-text.bold { font-weight: bold; } .modal.show { opacity: 1; visibility: visible; transform: scale(1.0); transition: visibility 0s linear 0s, opacity 0.25s 0s, transform 0.25s; } .modal-draggable { cursor: move; cursor: grab; } .modal-draggable:active { cursor: move; cursor: grabbing; } .modal-draggable.icon { position: absolute; color: grey; font-size: 23px; display: inline-block; text-decoration: none; left: 0; margin-left: 15px; outline: none; } .modal-draggable.icon:hover, .modal-resizable.icon:hover { color: white; background-color: rgba(0,191,165,.04) } .modal-draggable.icon:active, .modal-resizable.icon:active { color: yellow; } .modal-draggable.icon:after { content: '⮀'; } .modal-resizable { cursor: move; cursor: grab; cursor: nwse-resize; } .modal-resizable:active { cursor: move; cursor: grabbing; cursor: nwse-resize; } .modal-resizable.icon { position: absolute; color: grey; font-size: 20px; display: inline-block; text-decoration: none; width: 10px; height: 10px; right: 0; margin-right: 10px; outline: none; transform: translateY(-200%); bottom: 0; } .modal-resizable.icon:after { content: '⇲'; } .modal-header, .modal-footer, .modal-draggable.icon, .modal-close-button, .modal-body, .modal-button { font-family: "Roboto",sans-serif, Marmelad,"Lucida Grande",Arial,"Hiragino Sans GB",Georgia,"Helvetica Neue",Helvetica; } .modal-button { padding: 4px; background-color: #d2d2d2; text-align: center; text-decoration: none; color: black; border-radius: 15px; cursor: pointer; min-width: 100px; border: none; outline: #eee; font-size: 15px; } .modal-button:hover { background-color:#bdbdbd; } .modal-button.cancel { } .modal-button.ok { } .modal.dialog { } .modal-panel.dialog { } .modal-header.dialog { } .modal-header-text.dialog { } .modal-footer.dialog { display: flex; justify-content: center; align-items: center; width: 100%; padding: 10px; } .modal-body.dialog { margin: 20px; text-align: center; } .modal-button.dialog { min-width: 150px; margin-top: 1px; } .modal-button:not(:last-child) { margin-right: 20px; } .modal-button.resizeMargin { margin-right: 16px; } .buttonContainer { max-width: 600px; }/* // http://programmingnotes.org/ */ |
6. More Examples
Below are more examples demonstrating the use of ‘Modal.js‘. Don’t forget to include the module when running the examples!
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<!-- // ============================================================================ // Author: Kenneth Perkins // Date: Sept 4, 2020 // Taken From: http://programmingnotes.org/ // File: modalDemo.html // Description: Demonstrates the use of Modal.js // ============================================================================ --> <!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <title>My Programming Notes Modal.js Demo</title> <style> .main { text-align:center; margin-left:auto; margin-right:auto; } .button { padding: 5px; background-color: #d2d2d2; height:100%; text-align:center; text-decoration:none; color:black; display: flex; justify-content: center; align-items: center; flex-direction: column; border-radius: 15px; cursor: pointer; width: 120px; } .button:hover { background-color:#bdbdbd; } .inline { display:inline-block; } .center { display: flex; justify-content: center; align-items: center; } .modal-body { padding: 2px 16px; } </style> <!-- // Include module --> <link type="text/css" rel="stylesheet" href="./Modal.css"> <script type="text/javascript" src="./Modal.js"></script> </head> <body> <div class="main"> My Programming Notes Modal.js Demo <div style="margin-top: 20px;"> <div id="btnShow" class="inline button"> Show </div> </div> <!-- The Modal Background--> <section id="modalExample" class="modal" data-closeOnOuterClick="true" data-draggable="true" data-resizable="true" > <!-- Modal Panel --> <article class="modal-panel"> <header class="modal-header"> <div class="modal-header-text"> Modal Header </div> <div class="modal-close-button"></div> </header> <div class="modal-body"> <p>Some text in the Modal Body</p> <p>Some other text...</p> </div> <footer class="modal-footer"> <div class="modal-footer-text"> Modal Footer </div> </footer> </article> </section> </div> <script> document.addEventListener("DOMContentLoaded", function(eventLoaded) { // Optional: Sets up the initial default button clicks Modal.init(); // Show the modal document.querySelector('#btnShow').addEventListener('click', (event) => { Modal.show('#modalExample'); }); // Get the modal element let modalElement = document.querySelector('#modalExample'); setTimeout(() => { Modal.show(modalElement); setTimeout(() => { Modal.hide(modalElement); }, 2000); }, 200); }); </script> </body> </html><!-- // http://programmingnotes.org/ --> |
QUICK NOTES:
The highlighted lines are sections of interest to look out for.
The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.
JavaScript || Movement.js – Move, Resize, Drag & Drop Elements With The Mouse, Mobile Touch & Keyboard Using Vanilla JavaScript
The following is a module that handles dragging and resizing elements with a mouse/touch, moving elements with the keyboard via the arrow keys, and drag and dropping elements onto a drop zone.
Contents
1. Basic Usage
2. Draggable - Available Options
3. Resizable - Available Options
4. Movable - Available Options
5. Droppable - Available Options
6. Movement.js Namespace
7. More Examples
1. Basic Usage
Syntax is very straightforward. The following demonstrates basic usage to enable element movement.
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// Basic Usage. <script> (() => { // Makes elements movable with the mouse / touch Movement.draggable(document.querySelectorAll('Selector')); // Makes elements resizable with the mouse / touch Movement.resizable(document.querySelectorAll('Selector')); // Makes elements movable with the keyboard arrow keys Movement.movable(document.querySelectorAll('Selector')); // Makes elements drag and droppable with the mouse Movement.droppable({ element: document.querySelectorAll('Selector'), dropZone: document.querySelectorAll('Selector') }); })(); </script> |
‘Movement.draggable‘ makes an element draggable via the mouse/touch input. ‘Movement.resizable‘ makes an element resizable via the mouse/touch input. ‘Movement.movable‘ makes an element movable via the keyboard arrow keys. ‘Movement.droppable‘ makes an element droppable via a dropzone/allows files to be dropped to dropzone.
2. Draggable – Available Options
‘Movement.draggable‘ makes an element draggable via the mouse/touch input.
The options supplied to the ‘Movement.draggable‘ function is an object that is made up of the following properties.
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// Movement.draggable - Available Options. <script> (() => { // Makes an element draggable via the mouse/touch input Movement.draggable({ element: document.querySelectorAll('Selector'), // One or more Javascript elements of the elements to make draggable with the Mouse/Touch handle: document.querySelectorAll('Selector'), // Optional. One or more Javascript elements that restricts dragging from starting unless mousedown occurs on the specified element container: document.querySelector('Selector'), // Optional. A Javascript element of the container to only restrict the draggable element to onMoveStart: (position, event) => { // Optional. Function that allows to do something on move start console.log(`Draggable Start: Left: ${position.left}, Top: ${position.top}`); }, onMove: (position, event) => { // Optional. Function that allows to do something on move. The position.left and position.top can be modified console.log(`Draggable Move: Left: ${position.left}, Top: ${position.top}`); // Example modifying the element position //position.top = position.previous.top; }, onMoveEnd: (position, event) => { // Optional. Function that allows to do something on move end console.log(`Draggable End: Left: ${position.left}, Top: ${position.top}`); }, keepInViewPort: false, // Optional. Restricts the draggable element only to the visible viewport area. Default is False }); })(); </script> |
3. Resizable – Available Options
‘Movement.resizable‘ makes an element resizable via the mouse/touch input.
The options supplied to the ‘Movement.resizable‘ function is an object that is made up of the following properties.
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// Movement.resizable - Available Options. <script> (() => { // Makes an element resizable via the mouse/touch input Movement.resizable({ element: document.querySelectorAll('Selector'), // One or more Javascript elements of the elements to make resizable with the Mouse/Touch handle: document.querySelectorAll('Selector'), // Optional. One or more Javascript elements that restricts resizing from starting unless mousedown occurs on the specified element container: document.querySelector('Selector'), // Optional. A Javascript element of the container to only restrict the resizable element to onMoveStart: (position, event) => { // Optional. Function that allows to do something on move start console.log(`Resizable Start: Width: ${position.width}, Height: ${position.height}`); }, onMove: (position, event) => { // Optional. Function that allows to do something on move. The position.width, position.height can be modified console.log(`Resizable Move: Width: ${position.width}, Height: ${position.height}`); // Example modifying the element position //position.height = position.previous.height; }, onMoveEnd: (position, event) => { // Optional. Function that allows to do something on move end console.log(`Resizable End: Width: ${position.width}, Height: ${position.height}`); }, keepInViewPort: true, // Optional. Restricts the resizable element only to the visible viewport area. Default is False maintainInitialSize: true, // Optional. Ensures the element doesnt resize smaller than its initial size. Default is False }); })(); </script> |
4. Movable – Available Options
‘Movement.movable‘ makes an element movable via the keyboard arrow keys.
The options supplied to the ‘Movement.movable‘ function is an object that is made up of the following properties.
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// Movement.movable - Available Options. <script> (() => { // Makes an element movable via the keyboard arrow keys Movement.movable({ element: document.querySelectorAll('Selector'), // One or more Javascript elements of the elements to make movable with the Keyboard container: document.querySelector('Selector'), // Optional. A Javascript element of the container to only restrict the movable element to onMoveStart: (position, event) => { // Optional. Function that allows to do something on move start console.log(`Movable Start: Left: ${position.left}, Top: ${position.top}`); }, onMove: (position, event) => { // Optional. Function that allows to do something on move. The position.left, position.top and distance can be modified console.log(`Movable Move: Left: ${position.left}, Top: ${position.top}`); // Example modifying the element position //position.top = position.previous.top; }, onMoveEnd: (position, event) => { // Optional. Function that allows to do something on move end console.log(`Movable End: Left: ${position.left}, Top: ${position.top}`); }, distance: null, // Optional. The distance to move the element (in pixels) on keydown. Default is 5 keepInViewPort: false, // Optional. Restricts the movable element only to the visible viewport area. Default is False attachEventToWindow: true, // Optional. Determine if key down/up events should attach to the window or the element. If false, event is attached to the element. Default is True }); })(); </script> |
5. Droppable – Available Options
‘Movement.droppable‘ makes an element droppable via a dropzone/allows files to be dropped to dropzone.
The options supplied to the ‘Movement.droppable‘ function is an object that is made up of the following properties.
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// Movement.droppable - Available Options. <script> (() => { // Makes an element droppable via a dropzone/allows files to be dropped to dropzone Movement.droppable({ element: document.querySelectorAll('Selector'), // Optional. One or more Javascript elements of the elements drag and droppable elements dropZone: document.querySelectorAll('Selector'), // Optional. One or more Javascript elements of the dropzone elements onMoveStart: (position, event) => { // Optional. Function that allows to do something on move start console.log(`Droppable Start: Left: ${position.left}, Top: ${position.top}. Type: ${event.type}`); }, onMove: (position, event) => { // Optional. Function that allows to do something on move. console.log(`Droppable Move: Left: ${position.left}, Top: ${position.top}. Type: ${event.type}`); switch (event.type) { case 'dragleave': break; case 'dragover': break; case 'drag': break; } }, onMoveEnd: (position, event) => { // Optional. Function that allows to do something on move end switch (event.type) { case 'dragend': console.log(`Droppable End: Left: ${position.left}, Top: ${position.top}. Type: ${event.type}`); break; case 'drop': break; } }, dragImageUrl: 'https://site.com/image.jpg', // Optional. The image url to display on element drag dropZoneAllowMultiple: false, // Optional. Determines if more than one droppable is allowed on a dropzone. Default is true dropEffect: 'link', // Optional. The feedback (typically visual) the user is given during a drag and drop operation. Default is 'move' }); })(); </script> |
‘Movement.droppable‘ utilizes the HTML Drag and Drop API to facilitate movement. Currently, the API only allows Mouse support.
To allow for touch support, the polyfill DragDropTouch.js is recommended to be used, which simulates the Drag and Drop API. This allows ‘Movement.droppable‘ to be supported with touch input.
6. Movement.js Namespace
The following is the Movement.js Namespace. Include this in your project to start using!
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// ============================================================================ // Author: Kenneth Perkins // Date: Sept 2, 2020 // Taken From: http://programmingnotes.org/ // File: Movement.js // Description: Javascript that allows for element movement on a page // ============================================================================ /** * NAMESPACE: Movement * USE: Handles element movement */ var Movement = Movement || {}; (function(namespace) { 'use strict'; // -- Public data -- // Property to hold public variables and functions let exposed = namespace; // Set class names and other shared data const settings = { // Misc data visibilityTypeTopLeft: 'top_left', visibilityTypeBottomRight: 'bottom_right', visibilityTypeWidth: 'width', visibilityTypeHeight: 'height', keyDirectionUp: 'up', keyDirectionLeft: 'left', keyDirectionDown: 'down', keyDirectionRight: 'right', attributeDraggable: 'draggable', keepInViewPort: false, dropZoneAllowMultiple: true, attachEventToWindow: true, dropEffect: 'move', movableDistance: 5, maintainInitialSize: false, // Element class names classNameModal: '.modal', classNameModalPanel: '.modal-panel', classNameCloseButton: '.modal-close-button', classNameModalHeader: '.modal-header', classNameModalHeaderText: '.modal-header-text', classNameModalBody: '.modal-body', classNameModalFooter: '.modal-footer', classNameDraggable: '.modal-draggable', classNameDraggableIcon: '.icon', classNameShow: '.show', // Element data names dataNameCloseOnClick: 'data-closeOnClick', dataNameDraggable: 'data-draggable', dataNameIsDraggable: 'data-isDraggable', cleanClassName: (str) => { return str ? str.trim().replace('.', '') : ''; }, }; exposed.settings = settings; /** * FUNCTION: draggable * USE: Makes an element draggable via the mouse/touch input. * @param options: An object of initialization options. * Its made up of the following properties: * { * element: One or more Javascript elements of the elements to make * draggable with the Mouse/Touch * handle: Optional. One or more Javascript elements that restricts * dragging from starting unless mousedown occurs on the specified element * container: Optional. A Javascript element of the container to only * restrict the draggable element to * onMoveStart(position, event): Optional. Function that allows to do * something on move start * onMove(position, event): Optional. Function that allows to do * something on move. The position.left, top can be modified * onMoveEnd(position, event): Optional. Function that allows to do * something on move end * keepInViewPort: Optional. Restricts the draggable element only to the * visible viewport area. Default is False * } * @return: N/A. */ exposed.draggable = (options) => { options = verifyDragResizeOptions(options); let handles = options.handle; let draggables = options.element; deleteKeys(options, ['handle', 'element']); for (let index = 0; index < draggables.length; ++index) { let handle = handles[index]; let draggable = draggables[index]; addTouchSupport(handle); registerEvents(handle, ['mousedown'], draggable_mouseDown(draggable, options)); } } /** * FUNCTION: resizable * USE: Makes an element resizable via the mouse/touch input. * @param options: An object of initialization options. * Its made up of the following properties: * { * element: One or more Javascript elements of the elements to make * resizable with the Mouse/Touch * handle: Optional. One or more Javascript elements that restricts * dragging from starting unless mousedown occurs on the specified element * container: Optional. A Javascript element of the container to only * restrict the resizable element to * onMoveStart(position, event): Optional. Function that allows to do * something on move start * onMove(position, event): Optional. Function that allows to do * something on move. The position.width, height can be modified * onMoveEnd(position, event): Optional. Function that allows to do * something on move end * keepInViewPort: Optional. Restricts the resizable element only to the * visible viewport area. Default is False * maintainInitialSize: Optional. Ensures the element doesnt resize * smaller than its initial size. Default is False * } * @return: N/A. */ exposed.resizable = (options) => { options = verifyDragResizeOptions(options); let handles = options.handle; let resizables = options.element; deleteKeys(options, ['handle', 'element']); for (let index = 0; index < resizables.length; ++index) { let handle = handles[index]; let resizable = resizables[index]; addTouchSupport(handle); registerEvents(handle, ['mousedown'], resizable_mouseDown(resizable, options)); } } /** * FUNCTION: movable * USE: Makes an element movable via the keyboard arrow keys. * @param options: An object of initialization options. * Its made up of the following properties: * { * element: One or more Javascript elements of the elements to make * movable with the Keyboard * container: Optional. A Javascript element of the container to only * restrict the movable element to * onMoveStart(position, event): Optional. Function that allows to do * something on move start * onMove(position, event): Optional. Function that allows to do something * on move. The position.left, top and distance can be modified * onMoveEnd(position, event): Optional. Function that allows to do * something on move end * distance: Optional. The distance to move the element (in pixels) on * keydown. Default is 5 * keepInViewPort: Optional. Restricts the draggable element only to the * visible viewport area. Default is False * attachEventToWindow: Optional. Determine if key down/up events should * attach to the window or the element. Default is True * } * @return: N/A. */ exposed.movable = (options) => { options = verifyMovableOptions(options); let movables = options.element; deleteKeys(options, ['element']); for (let index = 0; index < movables.length; ++index) { let movable = movables[index]; let eventOwner = movable; if (options.attachEventToWindow) { eventOwner = window || document || movable; } registerEvents(eventOwner, ['keydown'], movable_keyDown(movable, options)); registerEvents(eventOwner, ['keyup'], movable_keyUp(movable, options)); tryFocus(eventOwner); } } /** * FUNCTION: droppable * USE: Makes an element droppable via a dropzone/allows files to be dropped to dropzone. * @param options: An object of initialization options. * Its made up of the following properties: * { * element: Optional. One or more Javascript elements of the elements * drag and droppable elements * dropZone: Optional. One or more Javascript elements of the dropzone * elements the movable element to * onMoveStart(position, event): Optional. Function that allows to do * something on move start * onMove(position, event): Optional. Function that allows to do * something on move * onMoveEnd(position, event): Optional. Function that allows to do * something on move end * dragImageUrl: Optional. The image url to display on element drag * dropZoneAllowMultiple: Optional. Determines if more than one * droppable is allowed on a dropzone. Default is true * dropEffect: Optional. The feedback (typically visual) the user is * given during a drag and drop operation. Default is 'move' * } * @return: N/A. */ exposed.droppable = (options) => { options = verifyDroppableOptions(options); let dropZones = options.dropZone; let droppables = options.element; deleteKeys(options, ['dropZone', 'element']); // Droppables let elementCount = !isNull(droppables) ? droppables.length : 0; for (let index = 0; index < elementCount; ++index) { let droppable = droppables[index]; registerEvents(droppable, ['dragstart'], droppable_dragStart(droppable, options)); registerEvents(droppable, ['drag'], droppable_drag(droppable, options)); registerEvents(droppable, ['dragend'], droppable_dragEnd(droppable, options)); } // Dropzones let dropZoneCount = !isNull(dropZones) ? dropZones.length : 0; for (let index = 0; index < dropZoneCount; ++index) { let dropZone = dropZones[index]; registerEvents(dropZone, ['drop'], dropZone_drop(dropZone, options)); registerEvents(dropZone, ['dragenter', 'dragleave'], dropZone_dragEnterLeave(dropZone, options)); registerEvents(dropZone, ['dragover'], dropZone_dragOver(dropZone, options)); } } // -- Private data -- let droppable_dragStart = (droppable, options) => { return (event) => { if (isFunction(event.dataTransfer.clearData)) { event.dataTransfer.clearData('text/plain'); } let dropId = droppable.id; if (isNull(dropId) || dropId.trim().length < 1 || !isDroppable(droppable)) { return false; } event.dataTransfer.effectAllowed = options.dropEffect; event.dataTransfer.setData('text/plain', dropId); if (options.dragImageUrl && isFunction(event.dataTransfer.setDragImage)) { let img = new Image(); img.src = options.dragImageUrl; event.dataTransfer.setDragImage(img, 10, 10); } if (options.onMoveStart) { let coordsStart = getCoords(droppable); let position = createPosition({ coordsNew: coordsStart, }); position.element = droppable; options.onMoveStart.call(this, position, event); } } } let droppable_drag = (droppable, options) => { return (event) => { if (options.onMove) { let coordsNew = getCoords(droppable); let position = createPosition({ coordsNew: coordsNew, }); position.element = droppable; options.onMove.call(this, position, event); } } } let droppable_dragEnd = (droppable, options) => { return (event) => { if (options.onMoveEnd) { let coordsEnd = getCoords(droppable); let position = createPosition({ coordsNew: coordsEnd, }); position.element = droppable; position.dropZone = droppable.parentNode; options.onMoveEnd.call(this, position, event); } } } let dropZone_drop = (dropZone, options) => { return (event) => { let droppable = null; event.preventDefault(); event.stopPropagation(); event.stopImmediatePropagation(); // Check if files or an element was dropped let files = event.dataTransfer.files; let dropId = event.dataTransfer.getData('text/plain'); if ((isNull(dropId) || dropId.trim().length < 1) && (isNull(files) || files.length < 1)) { return false; } // Handle the dropped element if (!isNull(dropId) && dropId.trim().length > 0) { droppable = document.getElementById(dropId); } if (!isNull(droppable)) { // Place element on the dropzone let isDropZone = (event.target === dropZone); if (isDropZone) { moveDroppable(droppable, event.target, options.dropZoneAllowMultiple); } else { // We missed the dropzone. Swap locations // if the element is placed on another droppable in the // dropzone let destinationItem = event.target; if (!isDroppable(destinationItem)) { destinationItem = closestDroppable(destinationItem, droppable); } if (!isNull(destinationItem)) { let destinationParent = destinationItem.parentNode; if (destinationParent === droppable.parentNode) { // The two droppables are on the same dropzone reOrderDroppable(droppable, destinationItem, destinationParent); } else { // The two droppables are on a different dropzone moveDroppable(droppable, destinationParent, options.dropZoneAllowMultiple); if (parentContains(destinationParent, destinationItem) && getDroppables(destinationParent).length > 1) { reOrderDroppable(droppable, destinationItem, destinationParent); } } } } } // Handle the file if (!isNull(files) && files.length > 0) { files = Array.prototype.slice.call(files); } else { files = null; } if (options.onMoveEnd) { let coordsNew = getCoords(droppable || event.target); let position = createPosition({ coordsNew: coordsNew, }); position.element = droppable; position.dropZone = dropZone; position.files = files; options.onMoveEnd.call(this, position, event); } } } let dropZone_dragEnterLeave = (dropZone, options) => { return (event) => { event.preventDefault(); event.stopPropagation(); event.stopImmediatePropagation(); if (options.onMove) { let coordsNew = getCoords(dropZone); let position = createPosition({ coordsNew: coordsNew, }); position.dropZone = dropZone; options.onMove.call(this, position, event); } } } let dropZone_dragOver = (dropZone, options) => { return (event) => { event.preventDefault(); event.stopPropagation(); event.stopImmediatePropagation(); event.dataTransfer.dropEffect = event.dataTransfer.effectAllowed; if (options.onMove) { let coordsNew = getCoords(dropZone); let position = createPosition({ coordsNew: coordsNew, }); position.dropZone = dropZone; options.onMove.call(this, position, event); } } } let movable_keyDown = (movable, options) => { let coordsInitial = getCoords(movable); let initialWidth = coordsInitial.width; let initialHeight = coordsInitial.height let distance = options.distance; return (event) => { event = event || window.event; let direction = settings.keyTracker.translate(event); if (isNull(direction)) { return; } event.preventDefault(); settings.keyTracker.track(direction); let moveElement = () => { let keepInViewPort = options.keepInViewPort; let containerArea = getContainerArea(movable, options.container); let coordsStart = getCoords(movable); if (!options.moveStartTriggered) { if (options.onMoveStart) { let position = createPosition({ coordsNew: coordsStart, containerArea: containerArea, }); position.element = movable; options.onMoveStart.call(this, position, event); } options.moveStartTriggered = true; } let newLeft = coordsStart.left; let newTop = coordsStart.top; let directions = settings.keyTracker.getTracked(); for (let direction of directions) { switch (direction) { case settings.keyDirectionUp: newTop -= distance; break; case settings.keyDirectionDown: newTop += distance; break; case settings.keyDirectionLeft: newLeft -= distance; break; case settings.keyDirectionRight: newLeft += distance; break; } } // Update the element position updatePosition(movable, {left: newLeft, top: newTop}, containerArea, keepInViewPort); if (options.onMove) { let coordsNew = getCoords(movable); let position = createPosition({ coordsNew: coordsNew, coordsPrevious: coordsStart, containerArea: containerArea, }); position.element = movable; position.direction = directions; position.distance = distance; position.viewportArea = getViewportArea(movable); position.initial = copyProps(coordsInitial); options.onMove.call(this, position, event); distance = position.distance; // Update the element position updatePosition(movable, {left: position.left, top: position.top}, containerArea, keepInViewPort); } } if (isNull(options.keyMoveInterval)) { options.keyMoveInterval = setInterval(() => { moveElement(); }, 20); } } } let movable_keyUp = (movable, options) => { return (event) => { event = event || window.event; let direction = settings.keyTracker.translate(event); if (isNull(direction)) { return; } settings.keyTracker.untrack(direction); let directions = settings.keyTracker.getTracked(); if (directions.length < 1) { clearInterval(options.keyMoveInterval); options.keyMoveInterval = null; options.moveStartTriggered = false; if (options.onMoveEnd) { let containerArea = getContainerArea(movable, options.container); let coordsEnd = getCoords(movable); let position = createPosition({ coordsNew: coordsEnd, containerArea: containerArea, }); position.element = movable; options.onMoveEnd.call(this, position, event); } } } } let resizable_mouseDown = (resizable, options) => { let coordsInitial = getCoords(resizable); let initialWidth = coordsInitial.width; let initialHeight = coordsInitial.height; return (event) => { event.stopPropagation(); let keepInViewPort = options.keepInViewPort; let containerArea = getContainerArea(resizable, options.container); // Get the mouse down position of the element let coordsStart = getCoords(resizable); let offsetX = event.clientX - coordsStart.width; let offsetY = event.clientY - coordsStart.height; if (options.onMoveStart) { let position = createPosition({ coordsNew: coordsStart, containerArea: containerArea, }); position.element = resizable; options.onMoveStart.call(this, position, event); } let moveElement = (event) => { // Get the new position let newWidth = (event.clientX - offsetX); let newHeight = (event.clientY - offsetY); // Get the previous position let coordsPrevious = getCoords(resizable); // Make sure the width/height is never less than the initial values if (options.maintainInitialSize) { newWidth = Math.max(newWidth, initialWidth); newHeight = Math.max(newHeight, initialHeight); } // Update the element position updatePosition(resizable, { width: newWidth, height: newHeight, }, containerArea, keepInViewPort); if (options.onMove) { let coordsNew = getCoords(resizable); let position = createPosition({ coordsNew: coordsNew, coordsPrevious: coordsPrevious, containerArea: containerArea, }); position.element = resizable; position.viewportArea = getViewportArea(resizable); position.initial = copyProps(coordsInitial); options.onMove.call(this, position, event); // Update the element position updatePosition(resizable, { width: position.width, height: position.height, }, containerArea, keepInViewPort); } } let reset = (event) => { document.removeEventListener('mousemove', moveElement); document.removeEventListener('mouseup', reset); if (options.onMoveEnd) { let coordsEnd = getCoords(resizable); let position = createPosition({ coordsNew: coordsEnd, containerArea: containerArea, }); position.element = resizable; options.onMoveEnd.call(this, position, event); } } document.addEventListener('mouseup', reset); document.addEventListener('mousemove', moveElement); } } let draggable_mouseDown = (draggable, options) => { let coordsInitial = getCoords(draggable); let initialWidth = coordsInitial.width; let initialHeight = coordsInitial.height; return (event) => { let keepInViewPort = options.keepInViewPort; let containerArea = getContainerArea(draggable, options.container); // Get the mouse down position of the element let coordsStart = getCoords(draggable); let offsetX = event.clientX - coordsStart.left; let offsetY = event.clientY - coordsStart.top; if (options.onMoveStart) { let position = createPosition({ coordsNew: coordsStart, containerArea: containerArea, }); position.element = draggable; options.onMoveStart.call(this, position, event); } let moveElement = (event) => { // Get the new position let newLeft = event.clientX - offsetX; let newTop = event.clientY - offsetY; // Get the previous position let coordsPrevious = getCoords(draggable); // Update the element position updatePosition(draggable, { left: newLeft, top: newTop }, containerArea, keepInViewPort); if (options.onMove) { let coordsNew = getCoords(draggable); let position = createPosition({ coordsNew: coordsNew, coordsPrevious: coordsPrevious, containerArea: containerArea, }); position.element = draggable; position.viewportArea = getViewportArea(draggable); position.initial = copyProps(coordsInitial); options.onMove.call(this, position, event); // Update the element position updatePosition(draggable, { left: position.left, top: position.top, }, containerArea, keepInViewPort); } } let reset = (event) => { document.removeEventListener('mousemove', moveElement); document.removeEventListener('mouseup', reset); if (options.onMoveEnd) { let coordsEnd = getCoords(draggable); let position = createPosition({ coordsNew: coordsEnd, containerArea: containerArea, }); position.element = draggable; options.onMoveEnd.call(this, position, event); } } document.addEventListener('mouseup', reset); document.addEventListener('mousemove', moveElement); } } let createPosition = (options) => { let position = {}; position.previous = {}; copyProps(options.coordsNew, position); copyProps(options.coordsPrevious, position.previous, Object.keys(options.coordsNew)); position.containerArea = options.containerArea; position.viewport = getViewportInfo(); return position; } let copyProps = (source, destination, props = null) => { props = props || Object.keys(source); destination = destination || {}; for (const prop of props) { destination[prop] = source && prop in source ? source[prop] : undefined; } return destination; } let setPosition = (element, options) => { for (const prop in options) { if (!(prop in element.style)) { continue; } let value = options[prop]; if (isUndefined(value)) { continue; } else if (!isNull(value) && !isNumeric(value)) { throw new TypeError(`${prop} is not a numeric value (${value})!`) } element.style[prop] = !isNull(value) ? parseInt(value, 10) + 'px' : value; } } let updatePosition = (element, newPosition, containerArea, keepInViewPort) => { // Update the element position setPosition(element, newPosition); // Make sure the element stays within its container (if it exists) if (containerArea) { newPosition = maintainContainerArea(element, containerArea, newPosition); } // Make sure the element stays in the viewport if (keepInViewPort && !isInViewport(element)) { maintainViewportArea(element, newPosition); } } let maintainContainerArea = (element, containerArea, newPosition = null) => { newPosition = newPosition || getCoords(element); let newLeft = newPosition.left; let newTop = newPosition.top; let newWidth = newPosition.width; let newHeight = newPosition.height if (!isNull(newLeft)) { newPosition.left = Math.max(containerArea.minLeft, Math.min(newLeft, containerArea.maxLeft)); } if (!isNull(newTop)) { newPosition.top = Math.max(containerArea.minTop, Math.min(newTop, containerArea.maxTop)); } if (!isNull(newWidth)) { newPosition.width = Math.min(newWidth, containerArea.maxWidth); } if (!isNull(newHeight)) { newPosition.height = Math.min(newHeight, containerArea.maxHeight); } // Update the element setPosition(element, newPosition); return newPosition; } let maintainViewportArea = (element, newPosition = null) => { newPosition = newPosition || getCoords(element); let updateTypes = [ settings.visibilityTypeWidth, settings.visibilityTypeHeight, settings.visibilityTypeBottomRight, settings.visibilityTypeTopLeft ]; let updatesRequired; do { updatesRequired = false; for (let type of updateTypes) { newPosition = updateVisibility(type, element, newPosition); if (!newPosition.updateFound) { continue; } // Update the element setPosition(element, newPosition); // Updates are still required updatesRequired = true; } } while (updatesRequired); return newPosition; } let updateVisibility = (type, element, newPosition) => { let newLeft = newPosition.left; let newTop = newPosition.top; let newWidth = newPosition.width; let newHeight = newPosition.height; let bounding = element.getBoundingClientRect(); let viewInfo = getViewportInfo(); let viewportHeight = viewInfo.height; let viewportWidth = viewInfo.width; let updateFound = false; switch (type) { case settings.visibilityTypeTopLeft: if (!isNull(newLeft)) { if (bounding.left < 0) { newLeft += Math.abs(bounding.left); updateFound = true; } } if (!isNull(newTop)) { if (bounding.top < 0) { newTop += Math.abs(bounding.top); updateFound = true; } } break; case settings.visibilityTypeBottomRight: if (!isNull(newTop)) { if (bounding.bottom > viewportHeight) { newTop -= Math.abs(bounding.bottom - viewportHeight); updateFound = true; } } if (!isNull(newLeft)) { if (bounding.right > viewportWidth) { newLeft -= Math.abs(bounding.right - viewportWidth); updateFound = true; } } break; case settings.visibilityTypeWidth: if (!isNull(newWidth)) { if (bounding.right > viewportWidth) { newWidth -= Math.abs(bounding.right - viewportWidth); updateFound = true; } } break; case settings.visibilityTypeHeight: if (!isNull(newHeight)) { if (bounding.bottom > viewportHeight) { newHeight -= Math.abs(bounding.bottom - viewportHeight); updateFound = true; } } break; default: throw new TypeError(`Unable to update element position. Unknown visibility type: ${type}.`) break; } return { updateFound: updateFound, left: newLeft, top: newTop, width: newWidth, height: newHeight, }; } // Check to make sure the element will be within our viewport boundary let isInViewport = (element) => { let bounding = element.getBoundingClientRect(); let viewInfo = getViewportInfo(); return ( bounding.top >= 0 && bounding.left >= 0 && bounding.bottom <= viewInfo.height && bounding.right <= viewInfo.width ); } let getViewportInfo = () => { return { height: Math.max(window.innerHeight || 0, document.documentElement.clientHeight || 0), width: Math.max(window.innerWidth || 0, document.documentElement.clientWidth || 0), }; } let getViewportArea = (element) => { // Get the binding area in respect to the container let viewInfo = getViewportInfo(); let minLeft = 0; let minTop = 0; let maxLeft = minLeft + (viewInfo.width - element.offsetWidth); let maxTop = minTop + (viewInfo.height - element.offsetHeight); let maxWidth = element.offsetWidth + ((viewInfo.width) - (element.offsetLeft + element.offsetWidth)); let maxHeight = element.offsetHeight + ((viewInfo.height) - (element.offsetTop + element.offsetHeight)); let viewportArea = { minLeft: minLeft, minTop: minTop, maxLeft: maxLeft, maxTop: maxTop, maxWidth: maxWidth, maxHeight: maxHeight, }; return viewportArea; } let getContainerArea = (element, container) => { // Get the binding area in respect to the container let containerArea = null; if (container) { let minLeft = container.offsetLeft; let minTop = container.offsetTop; let maxLeft = minLeft + (container.offsetWidth - element.offsetWidth); let maxTop = minTop + (container.offsetHeight - element.offsetHeight); let maxWidth = element.offsetWidth + ((container.offsetLeft + container.offsetWidth) - (element.offsetLeft + element.offsetWidth)); let maxHeight = element.offsetHeight + ((container.offsetTop + container.offsetHeight) - (element.offsetTop + element.offsetHeight)); containerArea = { minLeft: minLeft, minTop: minTop, maxLeft: maxLeft, maxTop: maxTop, maxWidth: maxWidth, maxHeight: maxHeight, }; } return containerArea; } let getCoords = (element) => { let computedStyle = window.getComputedStyle(element); let intProps = ['left', 'top', 'width', 'height']; let result = {}; for (const prop of intProps) { result[prop] = parseInt(computedStyle[prop], 10) || parseInt(element.style[prop], 10) || 0; } let stringProps = ['position']; for (const prop of stringProps) { result[prop] = (computedStyle[prop] || element.style[prop]).toLowerCase(); } if (result.position !== 'relative') { if (!result.left) { result.left = element.offsetLeft || 0; } if (!result.top) { result.top = element.offsetTop || 0; } if (!result.width) { result.width = element.offsetWidth || 0; } if (!result.height) { result.height = element.offsetHeight || 0; } } return result; } let addTouchSupport = (element) => { let events = ['touchstart', 'touchmove', 'touchend', 'touchcancel']; registerEvents(element, events, touchConverter); } let touchConverter = (event) => { // stop touch event event.stopPropagation(); event.preventDefault(); let touches = event.changedTouches; if (!touches || touches.length < 1) { return; } let first = touches[0]; let target = first.target; let type = ''; switch (event.type) { case 'touchstart': type = 'mousedown'; break; case 'touchmove': type = 'mousemove'; break; case 'touchend': case 'touchcancel': type = 'mouseup'; break; default: return; } let simulatedEvent = null; try { simulatedEvent = new MouseEvent(type, { bubbles: true, cancelable: true, view: window, screenX: first.screenX, screenY: first.screenY, clientX: first.clientX, clientY: first.clientY, }); } catch (e) { simulatedEvent = document.createEvent('MouseEvent'); simulatedEvent.initMouseEvent(type, true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY, false, false, false, false, 0 /*left*/, null); } target.dispatchEvent(simulatedEvent); } let registerEvents = (element, eventNames, func) => { eventNames.forEach((eventName, index) => { element.removeEventListener(eventName, func); element.addEventListener(eventName, func); }); } let verifyElement = (element) => { if (isString(element)) { element = document.querySelector(element); } if (isNull(element)) { throw new TypeError(`Unable to process. Element provided is null`); } else if (!isElement(element)) { throw new TypeError(`Unable to process element of type: ${typeof element}. Reason: '${element}' is not an HTMLElement.`); } return element; } let addClass = (element, cssClass) => { cssClass = settings.cleanClassName(cssClass); let modified = false; if (cssClass.length > 0 && !hasClass(element, cssClass)) { element.classList.add(cssClass) modified = true; } return modified; } let removeClass = (element, cssClass) => { cssClass = settings.cleanClassName(cssClass); let modified = false; if (cssClass.length > 0 && hasClass(element, cssClass)) { element.classList.remove(cssClass); modified = true; } return modified; } let hasClass = (element, cssClass) => { cssClass = settings.cleanClassName(cssClass); return element.classList.contains(cssClass); } let isString = (item) => { return 'string' === typeof item; } let isNull = (item) => { return isUndefined(item) || null === item; } let isUndefined = (item) => { return undefined === item; } let isFunction = (item) => { return 'function' === typeof item } let isElement = (item) => { let value = false; try { value = item instanceof HTMLElement || item instanceof HTMLDocument; } catch (e) { value = (typeof item==="object") && (item.nodeType===1) && (typeof item.style === "object") && (typeof item.ownerDocument ==="object"); } return value; } let isWindow = (item) => { return item && item.document && item.location && item.alert && item.setInterval; } let isNumeric = (n) => { return !isNaN(parseFloat(n)) && isFinite(n); } let tryFocus = (element) => { if (!element.focus) { let e = element; while (e.frameElement !== null) {e = e.parent;} if (e.parent) { element = e.parent; } } if (element.setAttribute) { element.setAttribute('tabindex', 0); } if (element.focus) { element.focus({preventScroll:true}); } } let deleteKeys = (obj, keys) => { let modified = false if (!isNull(obj)) { for (const key of keys) { if (key in obj) { delete obj[key]; modified = true; } } } return modified; } let getDroppables = (container) => { return container.querySelectorAll(`[${settings.attributeDraggable}='true']`); } let hasDroppable = (container) => { let droppables = getDroppables(container); return !isNull(droppables) && droppables.length > 0 ? droppables[0] : null; } let isDroppable = (element) => { let value = element.getAttribute(settings.attributeDraggable); return !isNull(value) && toBoolean(value); } let setDroppable = (element) => { element.setAttribute(settings.attributeDraggable, true); } let randomFromTo = (from, to) => { return Math.floor(Math.random() * (to - from + 1) + from); } let toBoolean = (value) => { value = String(value).trim().toLowerCase(); let ret = false; switch (value) { case 'true': case 'yes': case '1': ret = true; break; } return ret; } // see if it looks and smells like an iterable object, and do accept length === 0 let isArrayLike = (item) => { return ( Array.isArray(item) || (!!item && typeof item === "object" && typeof (item.length) === "number" && (item.length === 0 || (item.length > 0 && (item.length - 1) in item) ) ) ); } let closestDroppable = (e, exclude = null) => { for (; e; e = e.parentElement) { if (isDroppable(e) && (isNull(exclude) || exclude !== e)) { return e; } } return null; } let moveDroppable = (element, container, dropZoneAllowMultiple) => { let existingDroppable = null; if (!isNull(dropZoneAllowMultiple) && !dropZoneAllowMultiple) { existingDroppable = hasDroppable(container); } if (!isNull(existingDroppable)) { swapLocations(element, existingDroppable); } else { if (!parentContains(container, element)) { container.appendChild(element); } } } let parentContains = (parent, child) => { return parent !== child && parent.contains(child); } let reOrderDroppable = (elementX, elementY, container) => { if (isBefore(elementX, elementY, container)) { // Droppable originally is before target. Put it after the target container.insertBefore(elementX, elementY.nextSibling) } else { // Droppable originally is after the target. Put it before the target container.insertBefore(elementX, elementY); } } let isBefore = (elementX, elementY, container = null) => { container = container || (elementX.parentNode === elementY.parentNode ? elementX.parentNode : null) || document; let items = container.querySelectorAll('*'); let result = false; for (const item of items) { if (item === elementX) { result = true; break; } else if (item === elementY) { result = false; break; } } return result; } let swapLocations = (elementX, elementY) => { let parentY = elementY.parentNode; let nextY = elementY.nextSibling; if (nextY === elementX) { parentY.insertBefore(elementX, elementY); } else { elementX.parentNode.insertBefore(elementY, elementX); if (nextY) { parentY.insertBefore(elementX, nextY); } else { parentY.appendChild(elementX); } } } let propertyToArray = (obj, props) => { for (const prop of props) { if (prop in obj) { obj[prop] = convertToArray(obj[prop]); } } } let convertToArray = (value) => { if (!isNull(value) && !isArrayLike(value)) { value = [value]; } return value; } class KeyPressTracker { constructor(keys) { this.validKeys = {}; this.pressed = {}; for (const obj of keys) { if (!this.validKeys[obj.translation]) { this.validKeys[obj.translation] = []; } for (const code of obj.keyCodes) { this.validKeys[obj.translation].push(String(code)); } } } track(key) { key = this.translate(key); if (!key) { throw new Error(`{key} is not a valid tracked translation key!`); } this.pressed[key] = true; } untrack(key) { key = this.translate(key); if (!key) { throw new Error(`{key} is not a valid tracked translation key!`); } if (key in this.pressed) { delete this.pressed[key]; } } getTracked() { let tracked = []; for (let key in this.pressed) { if (!this.pressed[key]) { continue; } tracked.push(key); } return tracked; } _isValid(key) { return (key in this.validKeys); } translate(event) { event = event || window.event; let keyCode = event.key || event.keyCode || event; let translation = null; if (keyCode) { keyCode = String(keyCode); if (this._isValid(keyCode)) { translation = keyCode; } else { for (const key in this.validKeys) { let keyCodes = this.validKeys[key]; if (keyCodes.indexOf(keyCode) > -1) { translation = key; break; } } } } return translation; } } let createKeyTracker = () => { if (!isNull(settings.keyTracker)) { return; } settings.keyTracker = new KeyPressTracker([ {translation: settings.keyDirectionUp, keyCodes: ['ArrowUp', 'Up', 38, 87, 'w', 'W']}, {translation: settings.keyDirectionLeft, keyCodes: ['ArrowLeft', 'Left', 37, 65, 'a', 'A']}, {translation: settings.keyDirectionDown, keyCodes: ['ArrowDown', 'Down', 40, 83, 's', 'S']}, {translation: settings.keyDirectionRight, keyCodes: ['ArrowRight', 'Right', 39, 68, 'd', 'D']}, ]); } let verifyDroppableOptions = (options) => { // Verify if the basic provided options are valid options = verifyOptions(options); if (isNull(options.element) && isNull(options.dropZone)) { throw new TypeError('There are no elements or dropzones specified'); } let elementCount = !isNull(options.element) ? options.element.length : 0; for (let index = 0; index < elementCount; ++index) { let droppable = verifyElement(options.element[index]); if (isNull(droppable.id) || droppable.id.trim().length < 1) { droppable.id = `droppable_${index}_${randomFromTo(1271991, 7281987)}`; } setDroppable(droppable); } options.dropZoneAllowMultiple = !isNull(options.dropZoneAllowMultiple) ? options.dropZoneAllowMultiple : settings.dropZoneAllowMultiple; options.dropEffect = options.dropEffect || settings.dropEffect; options.dragImageUrl = isString(options.dragImageUrl) && options.dragImageUrl.length > 0 ? options.dragImageUrl : null; return options; } let verifyMovableOptions = (options) => { // Verify if the basic provided options are valid options = verifyOptions(options); if (isNull(options.element)) { throw new TypeError('There are no elements specified'); } options.distance = options.distance || settings.movableDistance; options.keepInViewPort = !isNull(options.keepInViewPort) ? options.keepInViewPort : settings.keepInViewPort; options.moveStartTriggered = false; options.keyMoveInterval = null; options.attachEventToWindow = !isNull(options.attachEventToWindow) ? options.attachEventToWindow : settings.attachEventToWindow; createKeyTracker(); return options; } let verifyDragResizeOptions = (options) => { // Verify if the basic provided options are valid options = verifyOptions(options); if (isNull(options.element)) { throw new TypeError('There are no elements specified'); } options.handle = options.handle || options.element; if (options.element.length > options.handle.length) { for (let index = options.handle.length; index < options.element.length; ++index) { options.handle[index] = verifyElement(options.element[index]); } } options.keepInViewPort = !isNull(options.keepInViewPort) ? options.keepInViewPort : settings.keepInViewPort; options.maintainInitialSize = !isNull(options.maintainInitialSize) ? options.maintainInitialSize : settings.maintainInitialSize; return options; } let verifyOptions = (options) => { // Make sure the required options are valid if (isNull(options)) { // Check to see if there are options throw new TypeError('There are no options specified.'); } else if (typeof options !== 'object' || isElement(options) || isArrayLike(options)) { // Check to see if a table is specified let element = options; options = {}; options.element = element; } // Make sure the element is valid if (!isNull(options.container) && !isElement(options.container)) { // Check to see if the value is an HTMLElement throw new TypeError(`Unable to process container of type: ${typeof options.container}. Reason: '${options.container}' is not an HTMLElement.`); } else if (!isNull(options.onMoveStart) && !isFunction(options.onMoveStart)) { // Check to see if callback is a function throw new TypeError(`Unable to call onMoveStart of type: ${typeof options.onMoveStart}. Reason: '${options.onMoveStart}' is not a function.`); } else if (!isNull(options.onMove) && !isFunction(options.onMove)) { // Check to see if callback is a function throw new TypeError(`Unable to call onMove of type: ${typeof options.onMove}. Reason: '${options.onMove}' is not a function.`); } else if (!isNull(options.onMoveEnd) && !isFunction(options.onMoveEnd)) { // Check to see if callback is a function throw new TypeError(`Unable to call onMoveEnd of type: ${typeof options.onMoveEnd}. Reason: '${options.onMoveEnd}' is not a function.`); } else if (!isNull(options.distance) && !isNumeric(options.distance)) { // Check to see if a value is valid throw new TypeError(`Unable to process distance of type: ${typeof options.distance}. Reason: '${options.distance}' is not a numeric value.`); } // Make sure items are an array propertyToArray(options, ['element', 'handle', 'dropZone']); return options; } (function (factory) { if (typeof define === 'function' && define.amd) { define([], factory); } else if (typeof exports === 'object') { module.exports = factory(); } }(function() { return namespace; })); }(Movement)); // http://programmingnotes.org/ |
7. More Examples
Below are more examples demonstrating the use of ‘Movement.js‘. Don’t forget to include the module when running the examples!
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<!-- // ============================================================================ // Author: Kenneth Perkins // Date: Sept 2, 2020 // Taken From: http://programmingnotes.org/ // File: movementDemo.html // Description: Demonstrates the use of Movement.js // ============================================================================ --> <!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <title>My Programming Notes Movement.js Demo</title> <style> .main { text-align:center; margin-left:auto; margin-right:auto; } .inline { display:inline-block; } .center { display: flex; justify-content: center; align-items: center; } #boxContainer { width: 500px; height: 500px; border: 1px solid grey; cursor: default; user-select: none; background-color: #eee; display: flex; } .box { width: 200px; height: 125px; position: absolute; user-select: none; } #box1 { background-color: salmon; align-self: flex-end; z-index: 1; } #box1Handle { width: 100px; height: 35px; background-color: yellow; text-align: center; cursor: move; } #box2 { background-color: cyan; cursor: move; align-self: center; } #box3 { background-color: #cc99cc; cursor: move; align-self: start; } #box3Handle { width: 10px; height: 10px; background: red; position: absolute; right: 0; bottom: 0; cursor: se-resize; } .boxInfo { margin-top: 10px; font-weight: bold; font-family: monospace; } .droppable { width: 200px; height: 20px; text-align: center; background: white; user-select: none; border: 1px solid grey; border-radius: 5px; cursor: grab; } .droppable:active { cursor: grabbing; } .dropzone { width: 200px; height: 20px; background: blueviolet; margin-bottom: 10px; padding: 10px; border-radius: 5px; user-select: none; } </style> <!-- // Include module --> <script type="text/javascript" src="./Movement.js"></script> <!-- Optional: The Following Adds Touch Screen (Mobile) Support For Movement.droppable --> <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/[email protected]/DragDropTouch.min.js"></script> </head> <body> <div class="main"> My Programming Notes Movement.js Demo <div class="center" style="margin-top: 30px;"> <div style="margin-right: 30px;"> <div class="dropzone"> <div class="droppable"> This div is Droppable </div> </div> <div class="dropzone"></div> <div class="dropzone"></div> <div class="dropzone"></div> <div class="droppable"> This div is another Droppable </div> </div> <div id="boxContainer"> <div id="box1" class="box"> <div id="box1Handle"> Drag Here </div> <div> Constrained Draggable & Movable Box With Handle </div> <div id="box1Info" class="boxInfo"> </div> </div> <div id="box3" class="box"> Constrained Resizable Box With Handle <div id="box3Info" class="boxInfo"> </div> <div id="box3Handle"> </div> </div> <div id="box2" class="box"> Unconstrained Draggable & Movable Box <div id="box2Info" class="boxInfo"> </div> </div> </div> </div> </div> <script> document.addEventListener("DOMContentLoaded", function(eventLoaded) { // Mouse draggables let box1Info = document.querySelector('#box1Info'); Movement.draggable({ element: document.querySelector('#box1'), // One or more Javascript elements of the elements to make draggable with the Mouse/Touch handle: document.querySelector('#box1Handle'), // Optional. One or more Javascript elements that restricts dragging from starting unless mousedown occurs on the specified element container: document.querySelector('#boxContainer'), // Optional. A Javascript element of the container to only restrict the draggable element to onMoveStart: (position, event) => { // Optional. Function that allows to do something on move start console.log(`Draggable Start: Left: ${position.left}, Top: ${position.top}`); }, onMove: (position, event) => { // Optional. Function that allows to do something on move. The position.left, position.top, can be modified console.log(`Draggable Move: Left: ${position.left}, Top: ${position.top}`); // Example modifying the element position //position.top = position.previous.top; box1Info.innerHTML = `Left: ${position.left}px, Top: ${position.top}px`; }, onMoveEnd: (position, event) => { // Optional. Function that allows to do something on move end console.log(`Draggable End: Left: ${position.left}, Top: ${position.top}`); }, keepInViewPort: false, // Optional. Restricts the draggable element only to the visible viewport area. Default is False }); // Keyboard movables Movement.movable({ element: document.querySelector('#box1'), // One or more Javascript elements of the elements to make movable with the Keyboard container: document.querySelector('#boxContainer'), // Optional. A Javascript element of the container to only restrict the movable element to onMoveStart: (position, event) => { // Optional. Function that allows to do something on move start console.log(`Movable Start: Left: ${position.left}, Top: ${position.top}`); }, onMove: (position, event) => { // Optional. Function that allows to do something on move. The position.left, position.top, and distance can be modified console.log(`Movable Move: Left: ${position.left}, Top: ${position.top}`); // Example modifying the element position //position.top = position.previous.top; box1Info.innerHTML = `Direction: ${position.direction.join('_')} <br />Left: ${position.left}px, Top: ${position.top}px`; }, onMoveEnd: (position, event) => { // Optional. Function that allows to do something on move end console.log(`Movable End: Left: ${position.left}, Top: ${position.top}`); }, distance: null, // Optional. The distance to move the element (in pixels) on keydown. Default is 5 keepInViewPort: false, // Optional. Restricts the movable element only to the visible viewport area. Default is False attachEventToWindow: true, // Optional. Determine if key down/up events should attach to the window or the element. Default is True }); // Mouse drag and droppables with dropzones Movement.droppable({ element: document.querySelectorAll('.droppable'), // Optional. One or more Javascript elements of the elements drag and droppable elements dropZone: document.querySelectorAll('.dropzone'), // Optional. One or more Javascript elements of the dropzone elements onMoveStart: (position, event) => { // Optional. Function that allows to do something on move start console.log(`Droppable Start: Left: ${position.left}, Top: ${position.top}. Type: ${event.type}`); }, onMove: (position, event) => { // Optional. Function that allows to do something on move. //console.log(`Droppable Move: Left: ${position.left}, Top: ${position.top}. Type: ${event.type}`); switch (event.type) { case 'dragleave': position.dropZone.style.backgroundColor = null; break; case 'dragover': position.dropZone.style.backgroundColor = '#ffffb2'; break; case 'drag': position.element.style.backgroundColor = 'orange'; break; } }, onMoveEnd: (position, event) => { // Optional. Function that allows to do something on move end switch (event.type) { case 'dragend': console.log(`Droppable End: Left: ${position.left}, Top: ${position.top}. Type: ${event.type}`); position.element.style.backgroundColor = null; break; case 'drop': position.dropZone.style.backgroundColor = null; break; } }, dragImageUrl: 'https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_92x30dp.png', // Optional. The image url to display on element drag dropZoneAllowMultiple: false, // Optional. Determines if more than one droppable is allowed on a dropzone. Default is true dropEffect: 'link', // Optional. The feedback (typically visual) the user is given during a drag and drop operation. Default is 'move' }); let box2Info = document.querySelector('#box2Info'); Movement.draggable({ element: document.querySelector('#box2'), keepInViewPort: true, onMove: (position, event) => { box2Info.innerHTML = `Left: ${position.left}px, Top: ${position.top}px`; }, }); Movement.movable({ element: document.querySelector('#box2'), keepInViewPort: true, //container: document.querySelector('#boxContainer'), onMoveStart: (position, event) => { console.log(`Movable Start: Left: ${position.left}, Top: ${position.top}`); }, onMove: (position, event) => { box2Info.innerHTML = `Direction: ${position.direction.join('_')} <br />Left: ${position.left}px, Top: ${position.top}px`; if (position.top < position.previous.top) { //position.top = position.previous.top; } if (position.left <= position.viewportArea.minLeft) { position.left = position.viewportArea.maxLeft; } else if (position.left >= position.viewportArea.maxLeft) { position.left = position.viewportArea.minLeft; } if (position.top <= position.viewportArea.minTop) { position.top = position.viewportArea.maxTop; } else if (position.top >= position.viewportArea.maxTop) { position.top = position.viewportArea.minTop; } }, onMoveEnd: (position, event) => { console.log(`Movable End: Left: ${position.left}, Top: ${position.top}`); }, distance: 5, // The distance to move (in pixels) per keydown iteration attachEventToWindow: false, // If true, event listeners will be attached to the window, false they are attached to the element }); // Resizable let box3Info = document.querySelector('#box3Info'); Movement.resizable({ element: document.querySelector('#box3'), // One or more Javascript elements of the elements to make resizable with the Mouse/Touch handle: document.querySelector('#box3Handle'), // Optional. One or more Javascript elements that restricts resizing from starting unless mousedown occurs on the specified element container: document.querySelector('#boxContainer'), // Optional. A Javascript element of the container to only restrict the resizable element to onMoveStart: (position, event) => { // Optional. Function that allows to do something on move start console.log(`Resizable Start: Width: ${position.width}, Height: ${position.height}`); }, onMove: (position, event) => { // Optional. Function that allows to do something on move. The position.width, position.height can be modified console.log(`Resizable Move: Width: ${position.width}, Height: ${position.height}`); // Example modifying the element position //position.height = position.previous.height; box3Info.innerHTML = `Width: ${position.width}px, Height: ${position.height}px`; }, onMoveEnd: (position, event) => { // Optional. Function that allows to do something on move end console.log(`Resizable End: Width: ${position.width}, Height: ${position.height}`); }, keepInViewPort: true, // Optional. Restricts the resizable element only to the visible viewport area. Default is False maintainInitialSize: true, // Optional. Ensures the element doesnt resize smaller than its initial size. Default is False }); Movement.draggable({ element: document.querySelector('#box3'), container: document.querySelector('#boxContainer'), onMove: (position, event) => { box3Info.innerHTML = `Left: ${position.left}px, Top: ${position.top}px`; }, }); }); </script> </body> </html><!-- // http://programmingnotes.org/ --> |
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Hi, I'm a software engineer. I write articles about programming and design in my spare time.
