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* VisualEditor Null Selection class.
*
* @copyright See AUTHORS.txt
*/
/**
* @class
* @extends ve.dm.Selection
* @constructor
*/
ve.dm.NullSelection = function VeDmNullSelection() {
// Parent constructor
ve.dm.NullSelection.super.call( this );
};
/* Inheritance */
OO.inheritClass( ve.dm.NullSelection, ve.dm.Selection );
/* Static Properties */
ve.dm.NullSelection.static.name = 'null';
/* Static Methods */
/**
* @inheritdoc
*/
ve.dm.NullSelection.static.newFromHash = function () {
return new ve.dm.NullSelection();
};
/* Methods */
/**
* @inheritdoc
*/
ve.dm.NullSelection.prototype.toJSON = function () {
return {
type: this.constructor.static.name
};
};
/**
* @inheritdoc
*/
ve.dm.NullSelection.prototype.getDescription = function () {
return 'Null';
};
/**
* Used as a shortcut for methods which make no modification
*
* @private
* @return {ve.dm.NullSelection} The selection itself
*/
ve.dm.NullSelection.prototype.self = function () {
return this;
};
ve.dm.NullSelection.prototype.collapseToStart = ve.dm.NullSelection.prototype.self;
ve.dm.NullSelection.prototype.collapseToEnd = ve.dm.NullSelection.prototype.self;
ve.dm.NullSelection.prototype.collapseToFrom = ve.dm.NullSelection.prototype.self;
ve.dm.NullSelection.prototype.collapseToTo = ve.dm.NullSelection.prototype.self;
/**
* @inheritdoc
*/
ve.dm.NullSelection.prototype.isCollapsed = function () {
return true;
};
ve.dm.NullSelection.prototype.translateByTransaction = ve.dm.NullSelection.prototype.self;
ve.dm.NullSelection.prototype.translateByTransactionWithAuthor = ve.dm.NullSelection.prototype.self;
/**
* @inheritdoc
*/
ve.dm.NullSelection.prototype.getRanges = function () {
return [];
};
/**
* @inheritdoc
*/
ve.dm.NullSelection.prototype.getCoveringRange = function () {
return null;
};
/**
* @inheritdoc
*/
ve.dm.NullSelection.prototype.equals = function ( other ) {
return this === other || (
!!other &&
other.constructor === this.constructor
);
};
/**
* @inheritdoc
*/
ve.dm.NullSelection.prototype.isNull = function () {
return true;
};
/* Registration */
ve.dm.selectionFactory.register( ve.dm.NullSelection );
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