wxxsd/UEditor/_src/plugins/justify.js

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///import core
///commands 段落格式,居左,居右,居中,两端对齐
///commandsName  JustifyLeft,JustifyCenter,JustifyRight,JustifyJustify
///commandsTitle  居左对齐,居中对齐,居右对齐,两端对齐
/**
 * @description 居左右中
 * @name baidu.editor.execCommand
 * @param   {String}   cmdName     justify执行对齐方式的命令
 * @param   {String}   align               对齐方式:left居左,right居右,center居中,justify两端对齐
 * @author zhanyi
 */
(function(){
    var block = domUtils.isBlockElm,
        defaultValue = {
            left : 1,
            right : 1,
            center : 1,
            justify : 1
        },
        doJustify = function(range,style){
            var bookmark = range.createBookmark(),
                filterFn = function( node ) {
                    return node.nodeType == 1 ? node.tagName.toLowerCase() != 'br' &&  !domUtils.isBookmarkNode(node) : !domUtils.isWhitespace( node )
                };

            range.enlarge(true);
            var bookmark2 = range.createBookmark(),
                current = domUtils.getNextDomNode(bookmark2.start,false,filterFn),
                tmpRange = range.cloneRange(),
                tmpNode;
            while(current &&  !(domUtils.getPosition(current,bookmark2.end)&domUtils.POSITION_FOLLOWING)){
                if(current.nodeType == 3 || !block(current)){
                    tmpRange.setStartBefore(current);
                    while(current && current!==bookmark2.end &&  !block(current)){
                        tmpNode = current;
                        current = domUtils.getNextDomNode(current,false,null,function(node){
                            return !block(node)
                        });
                    }
                    tmpRange.setEndAfter(tmpNode);
                    var common = tmpRange.getCommonAncestor();
                    if( !domUtils.isBody(common) && block(common)){
                        domUtils.setStyles(common,utils.isString(style) ? {'text-align':style} : style);
                        current = common;
                    }else{
                        var p = range.document.createElement('p');
                         domUtils.setStyles(p,utils.isString(style) ? {'text-align':style} : style);
                        var frag = tmpRange.extractContents();
                        p.appendChild(frag);
                        tmpRange.insertNode(p);
                        current = p;
                    }
                    current = domUtils.getNextDomNode(current,false,filterFn);
                }else{
                    current = domUtils.getNextDomNode(current,true,filterFn);
                }
            }
            return range.moveToBookmark(bookmark2).moveToBookmark(bookmark)
        };
    UE.commands['justify'] =  {
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