MediaWiki:Common.js

mw.loader.using( [ 'ext.visualEditor.core', 'ext.visualEditor.mwtransclusion' ] ).then(function () {

// --------- (start of ve.ui.CenterAction definition) -----------------------------------------------
// This is based on [lib/ve/src/ui/actions/ve.ui.BlockquoteAction.js] from Extension:VisualEditor.

	ve.ui.CenterAction = function VeUiCenterAction() {
		ve.ui.CenterAction.super.apply( this, arguments );
	};
	OO.inheritClass( ve.ui.CenterAction, ve.ui.Action );

	ve.ui.CenterAction.static.name = 'center';
	ve.ui.CenterAction.static.methods = [ 'wrap', 'unwrap', 'toggle' ];

	ve.ui.CenterAction.prototype.isWrapped = function () {
		var fragment = this.surface.getModel().getFragment();
		return fragment.hasMatchingAncestor( 'center' );
	};
	ve.ui.CenterAction.prototype.toggle = function () {
		return this[ this.isWrapped() ? 'unwrap' : 'wrap' ]();
	};
	ve.ui.CenterAction.prototype.wrap = function () {
		var
			surfaceModel = this.surface.getModel(),
			selection = surfaceModel.getSelection(),
			fragment = surfaceModel.getFragment( null, true ),
			leaves, leavesRange;

		if ( !( selection instanceof ve.dm.LinearSelection ) ) {
			return false;
		}

		leaves = fragment.getSelectedLeafNodes();
		leavesRange = new ve.Range(
			leaves[ 0 ].getRange().start,
			leaves[ leaves.length - 1 ].getRange().end
		);
		fragment = surfaceModel.getLinearFragment( leavesRange, true );

		fragment = fragment.expandLinearSelection( 'siblings' );

		while (
			fragment.getCoveredNodes().some( function ( nodeInfo ) {
				return !nodeInfo.node.isAllowedParentNodeType( 'center' ) || nodeInfo.node.isContent();
			} )
		) {
			fragment = fragment.expandLinearSelection( 'parent' );
		}

		// Wrap everything in a <center> tag
		fragment.wrapAllNodes( { type: 'center' } );

		return true;
	};
	ve.ui.CenterAction.prototype.unwrap = function () {
		var
			surfaceModel = this.surface.getModel(),
			selection = surfaceModel.getSelection(),
			fragment = surfaceModel.getFragment( null, true ),
			leaves, leavesRange;

		if ( !( selection instanceof ve.dm.LinearSelection ) ) {
			return false;
		}

		if ( !this.isWrapped() ) {
			return false;
		}

		leaves = fragment.getSelectedLeafNodes();
		leavesRange = new ve.Range(
			leaves[ 0 ].getRange().start,
			leaves[ leaves.length - 1 ].getRange().end
		);
		fragment = surfaceModel.getLinearFragment( leavesRange, true );

		fragment
			// Expand to cover entire <center> tag
			.expandLinearSelection( 'closest', ve.dm.CenterNode )
			// Unwrap it
			.unwrapNodes( 0, 1 );

		return true;
	};
	ve.ui.actionFactory.register( ve.ui.CenterAction );

// --------- (end of ve.ui.CenterAction definition) -------------------------------------------------

	ve.ui.CenterFormatTool = function VeUiCenterFormatTool() {
		ve.ui.CenterFormatTool.super.apply( this, arguments );
	};
	OO.inheritClass( ve.ui.CenterFormatTool, ve.ui.FormatTool );

	ve.ui.CenterFormatTool.static.name = 'center';
	ve.ui.CenterFormatTool.static.group = 'format';
	ve.ui.CenterFormatTool.static.title = 'Center';
	ve.ui.CenterFormatTool.static.format = { type: 'center' };
	ve.ui.CenterFormatTool.static.commandName = 'center';
	ve.ui.toolFactory.register( ve.ui.CenterFormatTool );

	ve.ui.commandRegistry.register(
		new ve.ui.Command(
			'center', 'center', 'toggle',
			{ supportedSelections: [ 'linear' ] }
		)
	);
} );