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* VisualEditor DataModel ClassAttribute class.
*
* @copyright See AUTHORS.txt
*/
/**
* DataModel class-attribute node.
*
* Used for nodes which use classes to store attributes.
*
* @class
* @abstract
*
* @constructor
*/
ve.dm.ClassAttributeNode = function VeDmClassAttributeNode() {};
/* Inheritance */
OO.initClass( ve.dm.ClassAttributeNode );
/* Static methods */
/**
* Mapping from class names to attributes
*
* e.g. { alignLeft: { align: 'left' } } sets the align attribute to 'left'
* if the element has the class 'alignLeft'
*
* @type {Object}
*/
ve.dm.ClassAttributeNode.static.classAttributes = {};
ve.dm.ClassAttributeNode.static.preserveHtmlAttributes = function ( attribute ) {
return attribute !== 'class';
};
/**
* Set attributes from a class attribute
*
* Unrecognized classes are also preserved.
*
* @param {Object} attributes Attributes object to modify
* @param {string|null} classAttr Class attribute from an element
*/
ve.dm.ClassAttributeNode.static.setClassAttributes = function ( attributes, classAttr ) {
var classNames = classAttr ? classAttr.trim().split( /\s+/ ) : [];
if ( !classNames.length ) {
return;
}
var unrecognizedClasses = [];
for ( var i = 0, l = classNames.length; i < l; i++ ) {
var className = classNames[ i ];
if ( Object.prototype.hasOwnProperty.call( this.classAttributes, className ) ) {
attributes = ve.extendObject( attributes, this.classAttributes[ className ] );
} else {
unrecognizedClasses.push( className );
}
}
attributes.originalClasses = classAttr;
attributes.unrecognizedClasses = unrecognizedClasses;
};
/**
* Get class attribute from element attributes
*
* @param {Object|undefined} attributes Element attributes
* @return {string|null} Class name, or null if no classes to set
*/
ve.dm.ClassAttributeNode.static.getClassAttrFromAttributes = function ( attributes ) {
attributes = attributes || {};
var classNames = [];
for ( var className in this.classAttributes ) {
var classAttributeSet = this.classAttributes[ className ];
var hasClass = true;
for ( var key in classAttributeSet ) {
if ( attributes[ key ] !== classAttributeSet[ key ] ) {
hasClass = false;
break;
}
}
if ( hasClass ) {
classNames.push( className );
}
}
if ( attributes.unrecognizedClasses ) {
classNames = OO.simpleArrayUnion( classNames, attributes.unrecognizedClasses );
}
// If no meaningful change in classes, preserve order
if (
attributes.originalClasses &&
ve.compareClassLists( attributes.originalClasses, classNames )
) {
return attributes.originalClasses;
} else Iif ( classNames.length > 0 ) {
return classNames.join( ' ' );
}
return null;
};
/**
* @inheritdoc ve.dm.Node
*/
ve.dm.ClassAttributeNode.static.sanitize = function ( dataElement ) {
Eif ( dataElement.attributes ) {
delete dataElement.attributes.unrecognizedClasses;
}
};
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