mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-11-15 10:35:48 +00:00
44623c9b2a
These have been pointing to the same method for a while now, we can safely remove these obsolete aliases and just use it as generic copy. * Each file touched by my editor had its new line at EOF fixed where absent * Don't copy an otherwise unused empty object (ve.dm.Converter) * Use common ve#copy syntax instead to create a link (ve.dm.Document, ve.dm.example) * Remove redundant conditionals for isArray/copyArray/copyObject (ve.dm.example) Change-Id: If560e658dc1fb59bf01f702c97e3e82a50a8a255
1015 lines
31 KiB
JavaScript
1015 lines
31 KiB
JavaScript
/*!
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* VisualEditor namespace.
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*
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* @copyright 2011-2013 VisualEditor Team and others; see AUTHORS.txt
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* @license The MIT License (MIT); see LICENSE.txt
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*/
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( function ( oo ) {
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var ve, hasOwn;
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/**
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* Namespace for all VisualEditor classes, static methods and static properties.
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* @class
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* @singleton
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*/
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ve = {
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// List of instances of ve.ui.Surface
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'instances': []
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};
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/* Utility Functions */
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hasOwn = Object.prototype.hasOwnProperty;
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/* Static Methods */
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/**
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* Create an object that inherits from another object.
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*
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* @method
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* @until ES5: Object#create
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* @inheritdoc Object#create
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*/
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ve.createObject = Object.create;
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/**
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* @method
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* @inheritdoc OO#inheritClass
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*/
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ve.inheritClass = oo.inheritClass;
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/**
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* Checks if an object is an instance of one or more classes.
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*
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* @method
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* @param {Object} subject Object to check
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* @param {Function[]} classes Classes to compare with
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* @return {boolean} Object inherits from one or more of the classes
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*/
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ve.isInstanceOfAny = function ( subject, classes ) {
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var i = classes.length;
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while ( classes[--i] ) {
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if ( subject instanceof classes[i] ) {
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return true;
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}
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}
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return false;
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};
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/**
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* @method
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* @inheritdoc OO#mixinClass
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*/
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ve.mixinClass = function ( targetFn, originFn ) {
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oo.mixinClass( targetFn, originFn );
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// Track mixins
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targetFn.mixins = targetFn.mixins || [];
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targetFn.mixins.push( originFn );
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};
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/**
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* Check if a constructor or object contains a certain mixin.
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*
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* @param {Function|Object} a Class or object to check
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* @param {Function} mixin Mixin to check for
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* @returns {boolean} Class or object uses mixin
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*/
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ve.isMixedIn = function ( subject, mixin ) {
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// Traverse from instances to the constructor
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if ( $.type( subject ) !== 'function' ) {
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subject = subject.constructor;
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}
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return !!subject.mixins && subject.mixins.indexOf( mixin ) !== -1;
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};
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/**
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* @method
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* @inheritdoc OO#cloneObject
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*/
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ve.cloneObject = oo.cloneObject;
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/**
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* @method
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* @inheritdoc OO#cloneObject
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*/
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ve.getObjectValues = oo.getObjectValues;
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/**
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* @method
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* @until ES5: Object#keys
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* @inheritdoc Object#keys
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*/
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ve.getObjectKeys = Object.keys;
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/**
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* @method
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* @inheritdoc OO#compare
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*/
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ve.compare = oo.compare;
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/**
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* @method
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* @inheritdoc OO#copy
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*/
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ve.copy = oo.copy;
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/**
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* Copy an array of DOM elements, optionally into a different document.
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*
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* @param {HTMLElement[]} domElements DOM elements to copy
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* @param {HTMLDocument} [doc] Document to create the copies in; if unset, simply clone each element
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* @return {HTMLElement[]} Copy of domElements with copies of each element
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*/
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ve.copyDomElements = function ( domElements, doc ) {
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return domElements.map( function ( domElement ) {
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return doc ? doc.importNode( domElement, true ) : domElement.cloneNode( true );
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} );
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};
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/**
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* Check to see if an object is a plain object (created using "{}" or "new Object").
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*
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* @method
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* @source <http://api.jquery.com/jQuery.isPlainObject/>
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* @param {Object} obj The object that will be checked to see if it's a plain object
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* @returns {boolean}
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*/
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ve.isPlainObject = $.isPlainObject;
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/**
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* Check to see if an object is empty (contains no properties).
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*
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* @method
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* @source <http://api.jquery.com/jQuery.isEmptyObject/>
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* @param {Object} obj The object that will be checked to see if it's empty
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* @returns {boolean}
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*/
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ve.isEmptyObject = $.isEmptyObject;
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/**
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* @method
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* @until ES5: Array#isArray
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* @inheritdoc Array#isArray
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*/
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ve.isArray = Array.isArray;
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/**
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* Wrapper for Function#bind.
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*
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* Create a function that calls the given function in a certain context.
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* If a function does not have an explicit context, it is determined at
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* execution time based on how it is invoked (e.g. object member, call/apply,
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* global scope, etc.).
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*
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* Performance optimization: <http://jsperf.com/function-bind-shim-perf>
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*
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* @method
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* @source <http://api.jquery.com/jQuery.proxy/>
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* @until ES5: Function#bind
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* @param {Function} func Function to bind
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* @param {Object} context Context for the function
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* @param {Mixed...} [args] Variadic list of arguments to prepend to arguments
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* to the bound function
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* @returns {Function} The bound
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*/
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ve.bind = $.proxy;
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/**
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* Wrapper for Array#indexOf.
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*
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* Values are compared without type coercion.
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*
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* @method
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* @source <http://api.jquery.com/jQuery.inArray/>
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* @until ES5: Array#indexOf
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* @param {Mixed} value Element to search for
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* @param {Array} array Array to search in
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* @param {number} [fromIndex=0] Index to being searching from
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* @returns {number} Index of value in array, or -1 if not found
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*/
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ve.indexOf = $.inArray;
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/**
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* Compute the union (duplicate-free merge) of a set of arrays.
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*
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* Arrays values must be convertable to object keys (strings)
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*
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* By building an object (with the values for keys) in parallel with
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* the array, a new item's existence in the union can be computed faster
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*
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* @param {Array...} arrays Arrays to union
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* @returns {Array} Union of the arrays
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*/
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ve.simpleArrayUnion = function () {
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var i, ilen, j, jlen, arr, obj = {}, result = [];
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for ( i = 0, ilen = arguments.length; i < ilen; i++ ) {
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arr = arguments[i];
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for ( j = 0, jlen = arr.length; j < jlen; j++ ) {
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if ( !obj[arr[j]] ) {
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obj[arr[j]] = true;
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result.push( arr[j] );
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}
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}
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}
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return result;
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};
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/**
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* Compute the intersection of two arrays (items in both arrays).
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*
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* Arrays values must be convertable to object keys (strings)
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*
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* @param {Array} a First array
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* @param {Array} b Second array
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* @returns {Array} Intersection of arrays
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*/
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ve.simpleArrayIntersection = function ( a, b ) {
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return ve.simpleArrayCombine( a, b, true );
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};
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/**
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* Compute the difference of two arrays (items in 'a' but not 'b').
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*
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* Arrays values must be convertable to object keys (strings)
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*
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* @param {Array} a First array
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* @param {Array} b Second array
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* @returns {Array} Intersection of arrays
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*/
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ve.simpleArrayDifference = function ( a, b ) {
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return ve.simpleArrayCombine( a, b, false );
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};
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/**
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* Combine arrays (intersection or difference).
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*
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* An intersection checks the item exists in 'b' while difference checks it doesn't.
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*
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* Arrays values must be convertable to object keys (strings)
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*
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* By building an object (with the values for keys) of 'b' we can
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* compute the result faster
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*
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* @param {Array} a First array
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* @param {Array} b Second array
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* @param {boolean} includeB Include items in 'b'
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* @returns {Array} Combination (intersection or difference) of arrays
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*/
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ve.simpleArrayCombine = function ( a, b, includeB ) {
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var i, ilen, isInB, bObj = {}, result = [];
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for ( i = 0, ilen = b.length; i < ilen; i++ ) {
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bObj[b[i]] = true;
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}
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for ( i = 0, ilen = a.length; i < ilen; i++ ) {
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isInB = !!bObj[a[i]];
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if ( isInB === includeB ) {
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result.push( a[i] );
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}
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}
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return result;
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};
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/**
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* Merge properties of one or more objects into another.
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* Preserves original object's inheritance (e.g. Array, Object, whatever).
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* In case of array or array-like objects only the indexed properties
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* are copied over.
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* Beware: If called with only one argument, it will consider
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* 'target' as 'source' and 'this' as 'target'. Which means
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* ve.extendObject( { a: 1 } ); sets ve.a = 1;
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*
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* @method
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* @source <http://api.jquery.com/jQuery.extend/>
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* @param {boolean} [recursive=false]
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* @param {Mixed} [target] Object that will receive the new properties
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* @param {Mixed...} [sources] Variadic list of objects containing properties
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* to be merged into the targe.
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* @returns {Mixed} Modified version of first or second argument
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*/
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ve.extendObject = $.extend;
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/**
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* Generates a hash of an object based on its name and data.
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* Performance optimization: http://jsperf.com/ve-gethash-201208#/toJson_fnReplacerIfAoForElse
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*
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* To avoid two objects with the same values generating different hashes, we utilize the replacer
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* argument of JSON.stringify and sort the object by key as it's being serialized. This may or may
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* not be the fastest way to do this; we should investigate this further.
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*
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* Objects and arrays are hashed recursively. When hashing an object that has a .getHash()
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* function, we call that function and use its return value rather than hashing the object
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* ourselves. This allows classes to define custom hashing.
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*
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* @param {Object} val Object to generate hash for
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* @returns {string} Hash of object
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*/
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ve.getHash = function ( val ) {
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return JSON.stringify( val, ve.getHash.keySortReplacer );
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};
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/**
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* Helper function for ve.getHash which sorts objects by key.
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*
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* This is a callback passed into JSON.stringify.
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*
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* @param {string} key Property name of value being replaced
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* @param {Mixed} val Property value to replace
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* @returns {Mixed} Replacement value
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*/
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ve.getHash.keySortReplacer = function ( key, val ) {
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var normalized, keys, i, len;
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if ( val && typeof val.getHashObject === 'function' ) {
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// This object has its own custom hash function, use it
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val = val.getHashObject();
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}
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if ( !ve.isArray( val ) && Object( val ) === val ) {
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// Only normalize objects when the key-order is ambiguous
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// (e.g. any object not an array).
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normalized = {};
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keys = ve.getObjectKeys( val ).sort();
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i = 0;
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len = keys.length;
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for ( ; i < len; i += 1 ) {
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normalized[keys[i]] = val[keys[i]];
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}
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return normalized;
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// Primitive values and arrays get stable hashes
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// by default. Lets those be stringified as-is.
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} else {
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return val;
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}
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};
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/**
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* Splice one array into another.
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*
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* This is the equivalent of arr.splice( offset, remove, d1, d2, d3, ... ) except that arguments are
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* specified as an array rather than separate parameters.
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*
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* This method has been proven to be faster than using slice and concat to create a new array, but
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* performance tests should be conducted on each use of this method to verify this is true for the
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* particular use. Also, browsers change fast, never assume anything, always test everything.
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*
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* Includes a replacement for broken implementation of Array.prototype.splice() found in Opera 12.
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*
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* @param {Array|ve.dm.BranchNode} arr Object supporting .splice() to remove from and insert into. Will be modified
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* @param {number} offset Offset in arr to splice at. This may NOT be negative, unlike the
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* 'index' parameter in Array#splice
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* @param {number} remove Number of elements to remove at the offset. May be zero
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* @param {Array} data Array of items to insert at the offset. May not be empty if remove=0
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* @returns {Array} Array of items removed
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*/
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ve.batchSplice = ( function () {
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var arraySplice;
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// This yields 'true' on Opera 12.15.
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function isSpliceBroken() {
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var n = 256, a = [];
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a[n] = 'a';
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a.splice( n + 1, 0, 'b' );
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return a[n] !== 'a';
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}
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if ( !isSpliceBroken() ) {
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arraySplice = Array.prototype.splice;
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} else {
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// Standard Array.prototype.splice() function implemented using .slice() and .push().
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arraySplice = function ( offset, remove/*, data... */ ) {
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var data, begin, removed, end;
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data = Array.prototype.slice.call( arguments, 2 );
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begin = this.slice( 0, offset );
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removed = this.slice( offset, remove );
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end = this.slice( offset + remove );
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this.length = 0;
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// This polyfill only been discovered to be necessary on Opera
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// and it seems to handle up to 1048575 function parameters.
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this.push.apply( this, begin );
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this.push.apply( this, data );
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this.push.apply( this, end );
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return removed;
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};
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}
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return function ( arr, offset, remove, data ) {
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// We need to splice insertion in in batches, because of parameter list length limits which vary
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// cross-browser - 1024 seems to be a safe batch size on all browsers
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var splice, index = 0, batchSize = 1024, toRemove = remove, spliced, removed = [];
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splice = ve.isArray( arr ) ? arraySplice : arr.splice;
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if ( data.length === 0 ) {
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// Special case: data is empty, so we're just doing a removal
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// The code below won't handle that properly, so we do it here
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return splice.call( arr, offset, remove );
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}
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while ( index < data.length ) {
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// Call arr.splice( offset, remove, i0, i1, i2, ..., i1023 );
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// Only set remove on the first call, and set it to zero on subsequent calls
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spliced = splice.apply(
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arr, [index + offset, toRemove].concat( data.slice( index, index + batchSize ) )
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);
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if ( toRemove > 0 ) {
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removed = spliced;
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}
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index += batchSize;
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toRemove = 0;
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}
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return removed;
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};
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}() );
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/**
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* Insert one array into another.
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*
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* This just a shortcut for `ve.batchSplice( dst, offset, 0, src )`.
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*
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* @see #batchSplice
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*/
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ve.insertIntoArray = function ( dst, offset, src ) {
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ve.batchSplice( dst, offset, 0, src );
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};
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/**
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* Get a deeply nested property of an object using variadic arguments, protecting against
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* undefined property errors.
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*
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* `quux = getProp( obj, 'foo', 'bar', 'baz' );` is equivalent to `quux = obj.foo.bar.baz;`
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* except that the former protects against JS errors if one of the intermediate properties
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* is undefined. Instead of throwing an error, this function will return undefined in
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* that case.
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*
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* @param {Object} obj
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* @param {Mixed...} [keys]
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* @returns obj[arguments[1]][arguments[2]].... or undefined
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*/
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ve.getProp = function ( obj ) {
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var i, retval = obj;
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for ( i = 1; i < arguments.length; i++ ) {
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if ( retval === undefined || retval === null ) {
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// Trying to access a property of undefined or null causes an error
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return undefined;
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}
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retval = retval[arguments[i]];
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}
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return retval;
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};
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/**
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* Set a deeply nested property of an object using variadic arguments, protecting against
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* undefined property errors.
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*
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* `ve.setProp( obj, 'foo', 'bar', 'baz' );` is equivalent to `obj.foo.bar = baz;` except that
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* the former protects against JS errors if one of the intermediate properties is
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* undefined. Instead of throwing an error, undefined intermediate properties will be
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* initialized to an empty object. If an intermediate property is null, or if obj itself
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* is undefined or null, this function will silently abort.
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*
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* @param {Object} obj
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* @param {Mixed...} [keys]
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* @param {Mixed} [value]
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*/
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ve.setProp = function ( obj /*, keys ... , value */ ) {
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var i, prop = obj;
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if ( Object( obj ) !== obj ) {
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return;
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}
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for ( i = 1; i < arguments.length - 2; i++ ) {
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if ( prop[arguments[i]] === undefined ) {
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prop[arguments[i]] = {};
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}
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if ( prop[arguments[i]] === null || typeof prop[arguments[i]] !== 'object' ) {
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return;
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}
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prop = prop[arguments[i]];
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}
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prop[arguments[arguments.length - 2]] = arguments[arguments.length - 1];
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};
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/**
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* Log data to the console.
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*
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* This implementation does nothing, to add a real implmementation ve.debug needs to be loaded.
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*
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* @param {Mixed...} [args] Data to log
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*/
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ve.log = function () {
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// don't do anything, this is just a stub
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};
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/**
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* Log an object to the console.
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*
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* This implementation does nothing, to add a real implmementation ve.debug needs to be loaded.
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*
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* @param {Object} obj
|
|
*/
|
|
ve.dir = function () {
|
|
// don't do anything, this is just a stub
|
|
};
|
|
|
|
/**
|
|
* Return a function, that, as long as it continues to be invoked, will not
|
|
* be triggered. The function will be called after it stops being called for
|
|
* N milliseconds. If `immediate` is passed, trigger the function on the
|
|
* leading edge, instead of the trailing.
|
|
*
|
|
* Ported from: http://underscorejs.org/underscore.js
|
|
*
|
|
* @param {Function} func
|
|
* @param {number} wait
|
|
* @param {boolean} immediate
|
|
* @returns {Function}
|
|
*/
|
|
ve.debounce = function ( func, wait, immediate ) {
|
|
var timeout;
|
|
return function () {
|
|
var context = this,
|
|
args = arguments,
|
|
later = function () {
|
|
timeout = null;
|
|
if ( !immediate ) {
|
|
func.apply( context, args );
|
|
}
|
|
};
|
|
if ( immediate && !timeout ) {
|
|
func.apply( context, args );
|
|
}
|
|
clearTimeout( timeout );
|
|
timeout = setTimeout( later, wait );
|
|
};
|
|
};
|
|
|
|
/**
|
|
* Move the selection to the end of an input.
|
|
*
|
|
* @param {HTMLElement} element Input element
|
|
*/
|
|
ve.selectEnd = function ( element ) {
|
|
element.focus();
|
|
if ( element.selectionStart !== undefined ) {
|
|
element.selectionStart = element.selectionEnd = element.value.length;
|
|
} else if ( element.createTextRange ) {
|
|
var textRange = element.createTextRange();
|
|
textRange.collapse( false );
|
|
textRange.select();
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Get a localized message.
|
|
*
|
|
* @param {string} key Message key
|
|
* @param {Mixed...} [params] Message parameters
|
|
*/
|
|
ve.msg = function () {
|
|
// Avoid using ve.bind because ve.init.platform doesn't exist yet.
|
|
// TODO: Fix dependency issues between ve.js and ve.init.platform
|
|
return ve.init.platform.getMessage.apply( ve.init.platform, arguments );
|
|
};
|
|
|
|
/**
|
|
* @method
|
|
* @inheritdoc unicodeJS.graphemebreak#splitClusters
|
|
* @see unicodeJS.graphemebreak#splitClusters
|
|
*/
|
|
ve.splitClusters = unicodeJS.graphemebreak.splitClusters;
|
|
|
|
/**
|
|
* Determine if the text consists of only unattached combining marks.
|
|
*
|
|
* @param {string} text Text to test
|
|
* @returns {boolean} The text is unattached combining marks
|
|
*/
|
|
ve.isUnattachedCombiningMark = function ( text ) {
|
|
return ( /^[\u0300-\u036F]+$/ ).test( text );
|
|
};
|
|
|
|
/**
|
|
* Convert a grapheme cluster offset to a byte offset.
|
|
*
|
|
* @param {string} text Text in which to calculate offset
|
|
* @param {number} clusterOffset Grapheme cluster offset
|
|
* @returns {number} Byte offset
|
|
*/
|
|
ve.getByteOffset = function ( text, clusterOffset ) {
|
|
return ve.splitClusters( text ).slice( 0, clusterOffset ).join( '' ).length;
|
|
};
|
|
|
|
/**
|
|
* Convert a byte offset to a grapheme cluster offset.
|
|
*
|
|
* @param {string} text Text in which to calculate offset
|
|
* @param {number} byteOffset Byte offset
|
|
* @returns {number} Grapheme cluster offset
|
|
*/
|
|
ve.getClusterOffset = function ( text, byteOffset ) {
|
|
return ve.splitClusters( text.substring( 0, byteOffset ) ).length;
|
|
};
|
|
|
|
/**
|
|
* Get a text substring, taking care not to split grapheme clusters.
|
|
*
|
|
* @param {string} text Text to take the substring from
|
|
* @param {number} start Start offset
|
|
* @param {number} end End offset
|
|
* @param {boolean} [outer=false] Include graphemes if the offset splits them
|
|
* @returns {string} Substring of text
|
|
*/
|
|
ve.graphemeSafeSubstring = function ( text, start, end, outer ) {
|
|
// TODO: improve performance by incrementally inspecting characters around the offsets
|
|
var unicodeStart = ve.getByteOffset( text, ve.getClusterOffset( text, start ) ),
|
|
unicodeEnd = ve.getByteOffset( text, ve.getClusterOffset( text, end ) );
|
|
|
|
// If the selection collapses and we want an inner, then just return empty
|
|
// otherwise we'll end up crossing over start and end
|
|
if ( unicodeStart === unicodeEnd && !outer ) {
|
|
return '';
|
|
}
|
|
|
|
// The above calculations always move to the right of a multibyte grapheme.
|
|
// Depending on the outer flag, we may want to move to the left:
|
|
if ( unicodeStart > start && outer ) {
|
|
unicodeStart = ve.getByteOffset( text, ve.getClusterOffset( text, start ) - 1 );
|
|
}
|
|
if ( unicodeEnd > end && !outer ) {
|
|
unicodeEnd = ve.getByteOffset( text, ve.getClusterOffset( text, end ) - 1 );
|
|
}
|
|
return text.substring( unicodeStart, unicodeEnd );
|
|
};
|
|
|
|
/**
|
|
* Escape non-word characters so they can be safely used as HTML attribute values.
|
|
*
|
|
* This method is basically a copy of `mw.html.escape`.
|
|
*
|
|
* @see #escapeHtml_escapeHtmlCharacter
|
|
* @param {string} value Attribute value to escape
|
|
* @returns {string} Escaped attribute value
|
|
*/
|
|
ve.escapeHtml = function ( value ) {
|
|
return value.replace( /['"<>&]/g, ve.escapeHtml.escapeHtmlCharacter );
|
|
};
|
|
|
|
/**
|
|
* Helper function for #escapeHtml to escape a character for use in HTML.
|
|
*
|
|
* This is a callback intended to be passed to String#replace.
|
|
*
|
|
* @method escapeHtml_escapeHtmlCharacter
|
|
* @private
|
|
* @param {string} key Property name of value being replaced
|
|
* @returns {string} Escaped charcater
|
|
*/
|
|
ve.escapeHtml.escapeHtmlCharacter = function ( value ) {
|
|
switch ( value ) {
|
|
case '\'':
|
|
return ''';
|
|
case '"':
|
|
return '"';
|
|
case '<':
|
|
return '<';
|
|
case '>':
|
|
return '>';
|
|
case '&':
|
|
return '&';
|
|
default:
|
|
return value;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Generate an opening HTML tag.
|
|
*
|
|
* This method copies part of `mw.html.element` from MediaWiki.
|
|
*
|
|
* NOTE: While the values of attributes are escaped, the tag name and the names of
|
|
* attributes (i.e. the keys in the attributes objects) are NOT ESCAPED. The caller is
|
|
* responsible for making sure these are sane tag/attribute names and do not contain
|
|
* unsanitized content from an external source (e.g. from the user or from the web).
|
|
*
|
|
* @param {string} tag HTML tag name
|
|
* @param {Object} attributes Key-value map of attributes for the tag
|
|
* @returns {string} Opening HTML tag
|
|
*/
|
|
ve.getOpeningHtmlTag = function ( tagName, attributes ) {
|
|
var html, attrName, attrValue;
|
|
html = '<' + tagName;
|
|
for ( attrName in attributes ) {
|
|
attrValue = attributes[attrName];
|
|
if ( attrValue === true ) {
|
|
// Convert name=true to name=name
|
|
attrValue = attrName;
|
|
} else if ( attrValue === false ) {
|
|
// Skip name=false
|
|
continue;
|
|
}
|
|
html += ' ' + attrName + '="' + ve.escapeHtml( String( attrValue ) ) + '"';
|
|
}
|
|
html += '>';
|
|
return html;
|
|
};
|
|
|
|
/**
|
|
* Get the attributes of a DOM element as an object with key/value pairs.
|
|
*
|
|
* @param {HTMLElement} element
|
|
* @returns {Object}
|
|
*/
|
|
ve.getDomAttributes = function ( element ) {
|
|
var result = {}, i;
|
|
for ( i = 0; i < element.attributes.length; i++ ) {
|
|
result[element.attributes[i].name] = element.attributes[i].value;
|
|
}
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Set the attributes of a DOM element as an object with key/value pairs.
|
|
*
|
|
* @param {HTMLElement} element DOM element to apply attributes to
|
|
* @param {Object} attributes Attributes to apply
|
|
* @param {string[]} [whitelist] List of attributes to exclusively allow (all lower case names)
|
|
*/
|
|
ve.setDomAttributes = function ( element, attributes, whitelist ) {
|
|
var key;
|
|
// Duck-typing for attribute setting
|
|
if ( !element.setAttribute || !element.removeAttribute ) {
|
|
return;
|
|
}
|
|
for ( key in attributes ) {
|
|
if ( attributes[key] === undefined || attributes[key] === null ) {
|
|
element.removeAttribute( key );
|
|
} else {
|
|
if ( whitelist && whitelist.indexOf( key.toLowerCase() ) === -1 ) {
|
|
continue;
|
|
}
|
|
element.setAttribute( key, attributes[key] );
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Build a summary of an HTML element.
|
|
*
|
|
* Summaries include node name, text, attributes and recursive summaries of children.
|
|
* Used for serializing or comparing HTML elements.
|
|
*
|
|
* @private
|
|
* @param {HTMLElement} element Element to summarize
|
|
* @returns {Object} Summary of element.
|
|
*/
|
|
ve.getDomElementSummary = function ( element ) {
|
|
var i,
|
|
$element = $( element ),
|
|
summary = {
|
|
'type': element.nodeName.toLowerCase(),
|
|
'text': $element.text(),
|
|
'attributes': {},
|
|
'children': []
|
|
};
|
|
|
|
// Gather attributes
|
|
if ( element.attributes ) {
|
|
for ( i = 0; i < element.attributes.length; i++ ) {
|
|
summary.attributes[element.attributes[i].name] = element.attributes[i].value;
|
|
}
|
|
}
|
|
// Summarize children
|
|
if ( element.childNodes ) {
|
|
for ( i = 0; i < element.childNodes.length; i++ ) {
|
|
if ( element.childNodes[i].nodeType !== Node.TEXT_NODE ) {
|
|
summary.children.push( ve.getDomElementSummary( element.childNodes[i] ) );
|
|
}
|
|
}
|
|
}
|
|
return summary;
|
|
};
|
|
|
|
/**
|
|
* Callback for #copy to convert nodes to a comparable summary.
|
|
*
|
|
* @private
|
|
* @param {Object} value Value in the object/array
|
|
* @returns {Object} DOM element summary if value is a node, otherwise just the value
|
|
*/
|
|
ve.convertDomElements = function ( value ) {
|
|
// Use duck typing rather than instanceof Node; the latter doesn't always work correctly
|
|
if ( value && value.nodeType ) {
|
|
return ve.getDomElementSummary( value );
|
|
}
|
|
return value;
|
|
};
|
|
|
|
/**
|
|
* Check whether a given DOM element is of a block or inline type.
|
|
*
|
|
* @param {HTMLElement} element
|
|
* @returns {boolean} True if element is block, false if it is inline
|
|
*/
|
|
ve.isBlockElement = function ( element ) {
|
|
return ve.isBlockElementType( element.nodeName.toLowerCase() );
|
|
};
|
|
|
|
/**
|
|
* Check whether a given tag name is a block or inline tag.
|
|
*
|
|
* @param {string} nodeName All-lowercase HTML tag name
|
|
* @returns {boolean} True if block, false if inline
|
|
*/
|
|
ve.isBlockElementType = function ( nodeName ) {
|
|
return ve.indexOf( nodeName, ve.isBlockElementType.blockTypes ) !== -1;
|
|
};
|
|
|
|
/**
|
|
* Private data for #isBlockElementType.
|
|
*
|
|
*/
|
|
ve.isBlockElementType.blockTypes = [
|
|
'div', 'p',
|
|
// tables
|
|
'table', 'tbody', 'thead', 'tfoot', 'caption', 'th', 'tr', 'td',
|
|
// lists
|
|
'ul', 'ol', 'li', 'dl', 'dt', 'dd',
|
|
// HTML5 heading content
|
|
'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hgroup',
|
|
// HTML5 sectioning content
|
|
'article', 'aside', 'body', 'nav', 'section', 'footer', 'header', 'figure',
|
|
'figcaption', 'fieldset', 'details', 'blockquote',
|
|
// other
|
|
'hr', 'button', 'canvas', 'center', 'col', 'colgroup', 'embed',
|
|
'map', 'object', 'pre', 'progress', 'video'
|
|
];
|
|
|
|
/**
|
|
* Create an HTMLDocument from an HTML string.
|
|
*
|
|
* The html parameter is supposed to be a full HTML document with a doctype and an `<html>` tag.
|
|
* If you pass a document fragment, it may or may not work, this is at the mercy of the browser.
|
|
*
|
|
* To create an empty document, pass the empty string.
|
|
*
|
|
* @param {string} html HTML string
|
|
* @returns {HTMLDocument} Document constructed from the HTML string
|
|
*/
|
|
ve.createDocumentFromHtml = function ( html ) {
|
|
// Here's how this function should look:
|
|
//
|
|
// var newDocument = document.implementation.createHtmlDocument( '' );
|
|
// newDocument.open();
|
|
// newDocument.write( html );
|
|
// newDocument.close();
|
|
// return newDocument;
|
|
//
|
|
// (Or possibly something involving DOMParser.prototype.parseFromString, but that's Firefox-only
|
|
// for now.)
|
|
//
|
|
// Sadly, it's impossible:
|
|
// * On IE 9, calling open()/write() on such a document throws an "Unspecified error" (sic).
|
|
// * On Firefox 20, calling open()/write() doesn't actually do anything, including writing.
|
|
// This is reported as Firefox bug 867102.
|
|
// * On Opera 12, calling open()/write() behaves as if called on window.document, replacing the
|
|
// entire contents of the page with new HTML. This is reported as Opera bug DSK-384486.
|
|
//
|
|
// Funnily, in all of those browsers it's apparently perfectly legal and possible to access the
|
|
// newly created document's DOM itself, including modifying documentElement's innerHTML, which
|
|
// would achieve our goal. But that requires some nasty magic to strip off the <html></html> tag
|
|
// itself, so we're not doing that. (We can't use .outerHTML, either, as the spec disallows
|
|
// assigning to it for the root element.)
|
|
//
|
|
// There is one more way - create an <iframe>, append it to current document, and access its
|
|
// contentDocument. The only browser having issues with that is Opera (sometimes the accessible
|
|
// value is not actually a Document, but something which behaves just like an empty regular
|
|
// object...), so we're detecting that and using the innerHTML hack described above.
|
|
|
|
// Create an invisible iframe
|
|
var newDocument, $iframe = $( '<iframe frameborder="0" width="0" height="0" />'),
|
|
iframe = $iframe.get( 0 );
|
|
// Attach it to the document. We have to do this to get a new document out of it
|
|
document.documentElement.appendChild( iframe );
|
|
// Write the HTML to it
|
|
newDocument = ( iframe.contentWindow && iframe.contentWindow.document ) || iframe.contentDocument;
|
|
newDocument.open();
|
|
newDocument.write( html ); // Party like it's 1995!
|
|
newDocument.close();
|
|
// Detach the iframe
|
|
// FIXME detaching breaks access to newDocument in IE
|
|
iframe.parentNode.removeChild( iframe );
|
|
|
|
if ( !newDocument.documentElement || newDocument.documentElement.cloneNode() === undefined ) {
|
|
// Surprise! The document is not a document! Only happens on Opera.
|
|
// (Or its nodes are not actually nodes, while the document
|
|
// *is* a document. This only happens when debugging with Dragonfly.)
|
|
newDocument = document.implementation.createHTMLDocument( '' );
|
|
// Carefully unwrap the HTML out of the root node (and doctype, if any).
|
|
// <html> might have some arguments here, but they're apparently not important.
|
|
html = html.replace(/^\s*(?:<!doctype[^>]*>)?\s*<html[^>]*>/i, '' );
|
|
html = html.replace(/<\/html>\s*$/i, '' );
|
|
newDocument.documentElement.innerHTML = html;
|
|
}
|
|
|
|
return newDocument;
|
|
};
|
|
|
|
/**
|
|
* Get the actual inner HTML of a DOM node.
|
|
*
|
|
* In most browsers, .innerHTML is broken and eats newlines in `<pre>` elements, see
|
|
* https://bugzilla.mozilla.org/show_bug.cgi?id=838954 . This function detects this behavior
|
|
* and works around it, to the extent possible. `<pre>\nFoo</pre>` will become `<pre>Foo</pre>`
|
|
* if the browser is broken, but newlines are preserved in all other cases.
|
|
*
|
|
* @param {HTMLElement} element HTML element to get inner HTML of
|
|
* @returns {string} Inner HTML
|
|
*/
|
|
ve.properInnerHtml = function ( element ) {
|
|
return ve.fixupPreBug( element ).innerHTML;
|
|
};
|
|
|
|
/**
|
|
* Get the actual outer HTML of a DOM node.
|
|
*
|
|
* @see ve#properInnerHtml
|
|
* @param {HTMLElement} element HTML element to get outer HTML of
|
|
* @returns {string} Outer HTML
|
|
*/
|
|
ve.properOuterHtml = function ( element ) {
|
|
return ve.fixupPreBug( element ).outerHTML;
|
|
};
|
|
|
|
/**
|
|
* Helper function for ve#properInnerHtml and #properOuterHtml.
|
|
*
|
|
* Detect whether the browser has broken `<pre>` serialization, and if so return a clone
|
|
* of the node with extra newlines added to make it serialize properly. If the browser is not
|
|
* broken, just return the original node.
|
|
*
|
|
* @param {HTMLElement} element HTML element to fix up
|
|
* @returns {HTMLElement} Either element, or a fixed-up clone of it
|
|
*/
|
|
ve.fixupPreBug = function ( element ) {
|
|
var div, $element;
|
|
if ( ve.isPreInnerHtmlBroken === undefined ) {
|
|
// Test whether newlines in `<pre>` are serialized back correctly
|
|
div = document.createElement( 'div' );
|
|
div.innerHTML = '<pre>\n\n</pre>';
|
|
ve.isPreInnerHtmlBroken = div.innerHTML === '<pre>\n</pre>';
|
|
}
|
|
|
|
if ( !ve.isPreInnerHtmlBroken ) {
|
|
return element;
|
|
}
|
|
|
|
// Workaround for bug 42469: if a `<pre>` starts with a newline, that means .innerHTML will
|
|
// screw up and stringify it with one fewer newline. Work around this by adding a newline.
|
|
// If we don't see a leading newline, we still don't know if the original HTML was
|
|
// `<pre>Foo</pre>` or `<pre>\nFoo</pre>` , but that's a syntactic difference, not a
|
|
// semantic one, and handling that is Parsoid's job.
|
|
$element = $( element ).clone();
|
|
$element.find( 'pre, textarea, listing' ).each( function () {
|
|
var matches;
|
|
if ( this.firstChild && this.firstChild.nodeType === Node.TEXT_NODE ) {
|
|
matches = this.firstChild.data.match( /^(\r\n|\r|\n)/ );
|
|
if ( matches && matches[1] ) {
|
|
// Prepend a newline exactly like the one we saw
|
|
this.firstChild.insertData( 0, matches[1] );
|
|
}
|
|
}
|
|
} );
|
|
return $element.get( 0 );
|
|
};
|
|
|
|
// Add more as you need
|
|
ve.Keys = {
|
|
'UNDEFINED': 0,
|
|
'BACKSPACE': 8,
|
|
'DELETE': 46,
|
|
'LEFT': 37,
|
|
'RIGHT': 39,
|
|
'UP': 38,
|
|
'DOWN': 40,
|
|
'ENTER': 13,
|
|
'END': 35,
|
|
'HOME': 36,
|
|
'TAB': 9,
|
|
'PAGEUP': 33,
|
|
'PAGEDOWN': 34,
|
|
'ESCAPE': 27,
|
|
'SHIFT': 16,
|
|
'SPACE': 32
|
|
};
|
|
|
|
// Expose
|
|
window.ve = ve;
|
|
}( OO ) );
|