web/assets/libs/ckeditor/4.6.7/plugins/autogrow/plugin.js

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/**
 * @license Copyright (c) 2003-2015, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or http://ckeditor.com/license
 */

/**
 * @fileOverview The Auto Grow plugin.
 */

'use strict';

( function() {
	CKEDITOR.plugins.add( 'autogrow', {
		init: function( editor ) {
			// This feature is available only for themed ui instance.
			if ( editor.elementMode == CKEDITOR.ELEMENT_MODE_INLINE )
				return;

			editor.on( 'instanceReady', function() {
				// Simply set auto height with div wysiwyg.
				if ( editor.editable().isInline() )
					editor.ui.space( 'contents' ).setStyle( 'height', 'auto' );
				// For classic (`iframe`-based) wysiwyg we need to resize the editor.
				else
					initIframeAutogrow( editor );
			} );
		}
	} );

	function initIframeAutogrow( editor ) {
		var lastHeight,
			doc,
			markerContainer,
			scrollable,
			marker,
			configBottomSpace = editor.config.autoGrow_bottomSpace || 0,
			configMinHeight = editor.config.autoGrow_minHeight !== undefined ? editor.config.autoGrow_minHeight : 200,
			configMaxHeight = editor.config.autoGrow_maxHeight || Infinity,
			maxHeightIsUnlimited = !editor.config.autoGrow_maxHeight;

		editor.addCommand( 'autogrow', {
			exec: resizeEditor,
			modes: { wysiwyg: 1 },
			readOnly: 1,
			canUndo: false,
			editorFocus: false
		} );

		var eventsList = { contentDom: 1, key: 1, selectionChange: 1, insertElement: 1, mode: 1 };
		for ( var eventName in eventsList ) {
			editor.on( eventName, function( evt ) {
				// Some time is required for insertHtml, and it gives other events better performance as well.
				if ( evt.editor.mode == 'wysiwyg' ) {
					setTimeout( function() {
						if ( isNotResizable() ) {
							lastHeight = null;
							return;
						}

						resizeEditor();