mediawiki-extensions-Visual.../modules/ve2/ce/ve.ce.BranchNode.js

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/**
* ContentEditable node that can have branch or leaf children.
*
* @class
* @abstract
* @constructor
* @extends {ve.BranchNode}
* @extends {ve.ce.Node}
* @param model {ve.dm.BranchNode} Model to observe
* @param {jQuery} [$element] Element to use as a container
*/
ve.ce.BranchNode = function( model, $element ) {
// Inheritance
ve.BranchNode.call( this );
ve.ce.Node.call( this, model, $element );
// Properties
this.$ = $element || $( '<div></div>' );
// Events
this.model.addListenerMethod( 'splice', this, 'onSplice' );
// Initialization
this.onAfterSplice.apply( this, [0].concat( model.getChildren() ) );
};
/* Methods */
ve.ce.BranchNode.prototype.convertDomElement = function( type ) {
// Create new element
var $new = $( '<' + type + '></' + type + '>' );
// Copy classes
$new.attr( 'class', this.$.attr( 'class' ) );
// Move contents
$new.append( this.$.contents() );
// Swap elements
this.$.replaceWith( $new );
// Use new element from now on
this.$ = $new;
};
ve.ce.BranchNode.prototype.onSplice = function( index, howmany ) {
var i,
length,
args = Array.prototype.slice.call( arguments, 0 );
// Convert models to views and attach them to this node
if ( args.length >= 3 ) {
for ( i = 2, length = args.length; i < length; i++ ) {
args[i] = args[i].createView();
}
}
this.emit.apply( this, ['beforeSplice'].concat( args ) );
var removals = this.children.splice.apply( this.children, args );
for ( i = 0, length = removals.length; i < length; i++ ) {
removals[i].detach();
removals[i].removeListener( 'update', this.emitUpdate );
// Update DOM
removals[i].$.detach();
}
if ( args.length >= 3 ) {
var $target;
if ( index ) {
// Get the element before the insertion point
$anchor = this.$.children().eq( index - 1 );
}
for ( i = args.length - 1; i >= 2; i-- ) {
args[i].attach( this );
args[i].on( 'update', this.emitUpdate );
if ( index ) {
$anchor.after( args[i].$ );
} else {
this.$.prepend( args[i].$ );
}
}
}
this.emit.apply( this, ['afterSplice'].concat( args ) );
if ( args.length >= 3 ) {
for ( i = 2, length = args.length; i < length; i++ ) {
args[i].render();
}
}
this.emit( 'update' );
};
/**
* Render content.
*
* @method
*/
ve.ce.BranchNode.prototype.render = function() {
for ( var i = 0; i < this.children.length; i++ ) {
this.children[i].render();
}
};
/* Inheritance */
ve.extendClass( ve.ce.BranchNode, ve.BranchNode );
ve.extendClass( ve.ce.BranchNode, ve.ce.Node );