///import core
///import commands\inserthtml.js
///commands 分割线
/**
 * 分割线
 * @function
 * @name baidu.editor.execCommand
 * @param {String}     cmdName    horizontal插入分割线
 */
(function (){
    var domUtils = baidu.editor.dom.domUtils;
    baidu.editor.commands['horizontal'] = {
        execCommand : function( cmdName ) {
            if(this.queryCommandState(cmdName)!==-1){
                this.execCommand('insertHtml','<hr>');
                var range = this.selection.getRange(),
                    start = range.startContainer;
                if(start.nodeType == 1 && !start.childNodes[range.startOffset] ){

                    var tmp;
                    if(tmp = start.childNodes[range.startOffset - 1]){
                        if(tmp.nodeType == 1 && tmp.tagName == 'HR'){
                            if(this.options.enterTag == 'p'){
                                tmp = this.document.createElement('p');
                                range.insertNode(tmp);
                                range.setStart(tmp,0).setCursor();
        
                            }else{
                                tmp = this.document.createElement('br');
                                range.insertNode(tmp);
                                range.setStartBefore(tmp).setCursor();
                            }
                        }
                    }

                }
                return true;
            }

        },
        //边界在table里不能加分隔线
        queryCommandState : function() {
            if(this.highlight){
                       return -1;
                   }
            var range = this.selection.getRange();
            return domUtils.findParentByTagName(range.startContainer,'table') ||
                domUtils.findParentByTagName(range.endContainer,'table') ? -1 : 0;
        }
    };
})();
