SalesSystemOnline/ckeditor_3.6/ckeditor/_source/plugins/htmldataprocessor/plugin.js

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/*
Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

(function()
{
	// Regex to scan for   at the end of blocks, which are actually placeholders.
	// Safari transforms the   to \xa0. (#4172)
	var tailNbspRegex = /^[\t\r\n ]*(?: |\xa0)$/;

	var protectedSourceMarker = '{cke_protected}';

	// Return the last non-space child node of the block (#4344).
	function lastNoneSpaceChild( block )
	{
		var lastIndex = block.children.length,
			last = block.children[ lastIndex - 1 ];
		while (  last && last.type == CKEDITOR.NODE_TEXT && !CKEDITOR.tools.trim( last.value ) )
			last = block.children[ --lastIndex ];
		return last;
	}

	function trimFillers( block, fromSource )
	{
		// If the current node is a block, and if we're converting from source or
		// we're not in IE then search for and remove any tailing BR node.
		//
		// Also, any   at the end of blocks are fillers, remove them as well.
		// (#2886)
		var children = block.children, lastChild = lastNoneSpaceChild( block );
		if ( lastChild )
		{
			if ( ( fromSource || !CKEDITOR.env.ie ) && lastChild.type == CKEDITOR.NODE_ELEMENT && lastChild.name == 'br' )
				children.pop();
			if ( lastChild.type == CKEDITOR.NODE_TEXT && tailNbspRegex.test( lastChild.value ) )
				children.pop();
		}
	}

	function blockNeedsExtension( block, fromSource, extendEmptyBlock )
	{
		if( !fromSource && ( !extendEmptyBlock ||
			typeof extendEmptyBlock == 'function' && ( extendEmptyBlock( block ) === false ) ) )
			return false;

        // 1. For IE version >=8,  empty blocks are displayed correctly themself in wysiwiyg;
        // 2. For the rest, at least table cell and list item need no filler space.
        // (#6248)
        if ( fromSource && CKEDITOR.env.ie &&
                ( document.documentMode > 7
                || block.name in CKEDITOR.dtd.tr
                || block.name in CKEDITOR.dtd.$listItem ) )
            return false;

		var lastChild = lastNoneSpaceChild( block );

		return !lastChild || lastChild &&
				( lastChild.type == CKEDITOR.NODE_ELEMENT && lastChild.name == 'br'
				// Some of the controls in form needs extension too,
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