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* VisualEditor ContentEditable View class.
*
* @copyright See AUTHORS.txt
*/
/**
* Generic base class for CE views.
*
* @abstract
* @extends OO.ui.Element
* @mixes OO.EventEmitter
*
* @constructor
* @param {ve.dm.Model} model Model to observe
* @param {Object} [config] Configuration options
*/
ve.ce.View = function VeCeView( model, config ) {
// Setting this property before calling the parent constructor allows overridden #getTagName
// methods in view classes to have access to the model when they are called for the first time
// inside of OO.ui.Element
this.model = model;
// Parent constructor
ve.ce.View.super.call( this, config );
// Mixin constructors
OO.EventEmitter.call( this );
// Properties
this.live = false;
// Events
this.connect( this, {
setup: 'onSetup',
teardown: 'onTeardown'
} );
// Initialize
this.initialize();
};
/* Inheritance */
OO.inheritClass( ve.ce.View, OO.ui.Element );
OO.mixinClass( ve.ce.View, OO.EventEmitter );
/* Events */
/**
* @event ve.ce.View#setup
*/
/**
* @event ve.ce.View#teardown
*/
/* Static members */
/**
* Allowed attributes for DOM elements, in the same format as ve.dm.Model#preserveHtmlAttributes
*
* This list includes attributes that are generally safe to include in HTML loaded from a
* foreign source and displaying it inside the browser. It doesn't include any event attributes,
* for instance, which would allow arbitrary JavaScript execution. This alone is not enough to
* make HTML safe to display, but it helps.
*
* TODO: Rather than use a single global list, set these on a per-view basis to something that makes
* sense for that view in particular.
*
* @static
* @property {boolean|Function}
* @param {string} attribute
* @return {boolean} Attibute is allowed
* @inheritable
*/
ve.ce.View.static.renderHtmlAttributes = function ( attribute ) {
const attributes = [
'abbr', 'about', 'align', 'alt', 'axis', 'bgcolor', 'border', 'cellpadding', 'cellspacing',
'char', 'charoff', 'cite', 'class', 'clear', 'color', 'colspan', 'datatype', 'datetime',
'dir', 'face', 'frame', 'headers', 'height', 'href', 'id', 'itemid', 'itemprop', 'itemref',
'itemscope', 'itemtype', 'lang', 'noshade', 'nowrap', 'property', 'rbspan', 'rel',
'resource', 'rev', 'rowspan', 'rules', 'scope', 'size', 'span', 'src', 'start', 'style',
'summary', 'title', 'type', 'typeof', 'valign', 'value', 'width'
];
return attributes.indexOf( attribute ) !== -1;
};
/* Methods */
/**
* Get an HTML document from the model, to use for URL resolution.
*
* The default implementation returns null; subclasses should override this if they can provide
* a resolution document.
*
* @see #getResolvedAttribute
* @return {HTMLDocument|null} HTML document to use for resolution, or null if not available
*/
ve.ce.View.prototype.getModelHtmlDocument = function () {
return null;
};
/**
* Initialize this.$element. This is called by the constructor and should be called every time
* this.$element is replaced.
*/
ve.ce.View.prototype.initialize = function () {
if ( this.model.element && this.model.element.originalDomElementsHash !== undefined ) {
// Render attributes from original DOM elements
ve.dm.Converter.static.renderHtmlAttributeList(
this.model.getOriginalDomElements( this.model.getStore() ),
this.$element,
this.constructor.static.renderHtmlAttributes,
// Computed
true,
// Deep
!( this.model instanceof ve.dm.Node ) ||
!this.model.canHaveChildren() ||
this.model.handlesOwnChildren()
);
}
};
/**
* Handle setup event.
*/
ve.ce.View.prototype.onSetup = function () {
this.$element.data( 'view', this );
};
/**
* Handle teardown event.
*/
ve.ce.View.prototype.onTeardown = function () {
this.$element.removeData( 'view' );
};
/**
* Get the model the view observes.
*
* @return {ve.dm.Model} Model the view observes
*/
ve.ce.View.prototype.getModel = function () {
return this.model;
};
/**
* Check if the view is attached to the live DOM.
*
* @return {boolean} View is attached to the live DOM
*/
ve.ce.View.prototype.isLive = function () {
return this.live;
};
/**
* Set live state.
*
* @param {boolean} live The view has been attached to the live DOM (use false on detach)
* @fires ve.ce.View#setup
* @fires ve.ce.View#teardown
*/
ve.ce.View.prototype.setLive = function ( live ) {
this.live = live;
if ( this.live ) {
this.emit( 'setup' );
} else {
this.emit( 'teardown' );
}
};
/**
* Get a resolved URL from a model attribute.
*
* @param {string} key Attribute name whose value is a URL
* @return {string} URL resolved according to the document's base
*/
ve.ce.View.prototype.getResolvedAttribute = function ( key ) {
const plainValue = this.model.getAttribute( key ),
doc = this.getModelHtmlDocument();
return doc && typeof plainValue === 'string' ? ve.resolveUrl( plainValue, doc ) : plainValue;
};
/**
* Release all memory.
*/
ve.ce.View.prototype.destroy = function () {
this.disconnect( this );
this.model.disconnect( this );
this.model = null;
};
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