///import core
///commands 引用
///commandsName  BlockQuote
///commandsTitle  引用
/**
 * 
 * 引用模块实现
 * @function
 * @name baidu.editor.execCommand
 * @param   {String}   cmdName     blockquote引用
 */
(function() {

    var domUtils = baidu.editor.dom.domUtils,
        dtd = baidu.editor.dom.dtd,
        getObj = function(editor){
            var startNode = editor.selection.getStart();
            return domUtils.findParentByTagName( startNode, 'blockquote', true )
        };

    baidu.editor.commands['blockquote'] = {
        execCommand : function( cmdName, attrs ) {
          
            var range = this.selection.getRange(),
                obj = getObj(this),
                blockquote = dtd.blockquote,
                bookmark = range.createBookmark(),
                tds = this.currentSelectedArr;


            if ( obj ) {
                if(tds && tds.length){
                    domUtils.remove(obj,true)
                }else{
                    var start = range.startContainer,
                        startBlock = domUtils.isBlockElm(start) ? start : domUtils.findParent(start,function(node){return domUtils.isBlockElm(node)}),

                        end = range.endContainer,
                        endBlock = domUtils.isBlockElm(end) ? end :  domUtils.findParent(end,function(node){return domUtils.isBlockElm(node)});

                    //处理一下li
                    startBlock = domUtils.findParentByTagName(startBlock,'li',true) || startBlock;
                    endBlock = domUtils.findParentByTagName(endBlock,'li',true) || endBlock;


                    if(startBlock.tagName == 'LI' || startBlock.tagName == 'TD' || startBlock === obj){
                        domUtils.remove(obj,true)
                    }else{
                        domUtils.breakParent(startBlock,obj);
                    }

                    if(startBlock !== endBlock){
                        obj = domUtils.findParentByTagName(endBlock,'blockquote');
                        if(obj){
                            if(endBlock.tagName == 'LI' || endBlock.tagName == 'TD'){
                                domUtils.remove(obj,true)
                            }else{
                                 domUtils.breakParent(endBlock,obj);
                            }
    
                        }
                    }

                    var blockquotes = domUtils.getElementsByTagName(this.document,'blockquote');
                    for(var i=0,bi;bi=blockquotes[i++];){
                        if(!bi.childNodes.length){
                            domUtils.remove(bi)
                        }else if(domUtils.getPosition(bi,startBlock)&domUtils.POSITION_FOLLOWING && domUtils.getPosition(bi,endBlock)&domUtils.POSITION_PRECEDING){
                            domUtils.remove(bi,true)
                        }
                    }
                }



            } else {

                var tmpRange = range.cloneRange(),
                    node = tmpRange.startContainer.nodeType == 1 ? tmpRange.startContainer : tmpRange.startContainer.parentNode,
                    preNode = node,
                    doEnd = 1;

                //调整开始
                while ( 1 ) {
                    if ( domUtils.isBody(node) ) {
                        if ( preNode !== node ) {
                            if ( range.collapsed ) {
                                tmpRange.selectNode( preNode );
                                doEnd = 0;
                            } else {
                                tmpRange.setStartBefore( preNode );
                            }
                        }else{
                            tmpRange.setStart(node,0)
                        }

                        break;
                    }
                    if ( !blockquote[node.tagName] ) {
                        if ( range.collapsed ) {
                            tmpRange.selectNode( preNode )
                        } else
                            tmpRange.setStartBefore( preNode);
                        break;
                    }

                    preNode = node;
                    node = node.parentNode;
                }
                
                //调整结束
               if ( doEnd ) {
                    preNode = node =  node = tmpRange.endContainer.nodeType == 1 ? tmpRange.endContainer : tmpRange.endContainer.parentNode;
                    while ( 1 ) {

                        if ( domUtils.isBody( node ) ) {
                            if ( preNode !== node ) {

                                    tmpRange.setEndAfter( preNode );
                                
                            } else {
                                tmpRange.setEnd( node, node.childNodes.length )
                            }

                            break;
                        }
                        if ( !blockquote[node.tagName] ) {
                            tmpRange.setEndAfter( preNode );
                            break;
                        }

                        preNode = node;
                        node = node.parentNode;
                    }

                }


                node = range.document.createElement( 'blockquote' );
                domUtils.setAttributes( node, attrs );
                node.appendChild( tmpRange.extractContents() );
                tmpRange.insertNode( node );
                //去除重复的
                var childs = domUtils.getElementsByTagName(node,'blockquote');
                for(var i=0,ci;ci=childs[i++];){
                    if(ci.parentNode){
                        domUtils.remove(ci,true)
                    }
                }

            }
            range.moveToBookmark( bookmark ).select()
        },
        queryCommandState : function() {
           if(this.highlight){
               return -1;
           }
            return getObj(this) ? 1 : 0;
        }
    };
//    baidu.editor.contextMenuItems.push({
//        label : '引用',
//        cmdName : 'blockquote'
//    })

})();


