///import core
///import commands\removeformat.js
///commands 字体颜色,背景色,字号,字体,下划线,删除线
///commandsName  ForeColor,BackColor,FontSize,FontFamily,Underline,StrikeThrough
///commandsTitle  字体颜色,背景色,字号,字体,下划线,删除线
/**
 * @description 字体
 * @name baidu.editor.execCommand
 * @param {String}     cmdName    执行的功能名称
 * @param {String}    value             传入的值
 */
(function() {
    var domUtils = baidu.editor.dom.domUtils,
        fonts = {
            'forecolor':'color',
            'backcolor':'background-color',
            'fontsize':'font-size',
            'fontfamily':'font-family',
           
            'underline':'text-decoration',
            'strikethrough':'text-decoration'
        },
        reg = new RegExp(domUtils.fillChar,'g'),
        browser = baidu.editor.browser,
        flag = 0;

    for ( var p in fonts ) {
        (function( cmd, style ) {
            baidu.editor.commands[cmd] = {
                execCommand : function( cmdName, value ) {
                    value = value || (this.queryCommandState(cmdName) ? 'none' : cmdName == 'underline' ? 'underline' : 'line-through');
                    var me = this,
                        range = this.selection.getRange(),
                        text;
                    //执行了上述代码可能产生冗余的html代码，所以要注册 beforecontent去掉这些冗余的代码
                    if(!flag){
                        me.addListener('beforegetcontent',function(){
                            domUtils.clearReduent(me.document,['span'])
                        });
                        flag = 1;
                    }
                    if ( value == 'default' ) {

                        if(range.collapsed){
                            text = me.document.createTextNode('font');
                            range.insertNode(text).select()

                        }
                        me.execCommand( 'removeFormat', 'span,a', style);
                        if(text){
                            range.setStartBefore(text).setCursor();
                            domUtils.remove(text)
                        }


                    } else {
                        if(me.currentSelectedArr && me.currentSelectedArr.length > 0){
                            for(var i=0,ci;ci=me.currentSelectedArr[i++];){
                                range.selectNodeContents(ci);
                                range.applyInlineStyle( 'span', {'style':style + ':' + value} );

                            }
                            range.selectNodeContents(this.currentSelectedArr[0]).select();
                        }else{
                            if ( !range.collapsed ) {
                                if((cmd == 'underline'||cmd=='strikethrough') && me.queryCommandValue(cmd)){
                                     me.execCommand( 'removeFormat', 'span,a', style );
                                }
                                range = me.selection.getRange();

                                range.applyInlineStyle( 'span', {'style':style + ':' + value} ).select();
                            } else {
                                
                                var span = domUtils.findParentByTagName(range.startContainer,'span',true);
                                text = me.document.createTextNode('font');
                                if(span && !span.children.length && !span[browser.ie ? 'innerText':'textContent'].replace(reg,'').length){
                                    //for ie hack when enter
                                    range.insertNode(text);
                                     if(cmd == 'underline'||cmd=='strikethrough'){
                                         range.selectNode(text).select();
                                         me.execCommand( 'removeFormat','span,a', style, null );

                                         span = domUtils.findParentByTagName(text,'span',true);
                                         range.setStartBefore(text)

                                    }
                                    span.style.cssText = span.style.cssText +  ';' + style + ':' + value;
                                    range.collapse(true).select();


                                }else{


                                    range.insertNode(text);
                                    range.selectNode(text).select();
                                    span = range.document.createElement( 'span' );

                                    if(cmd == 'underline'||cmd=='strikethrough'){
                                        //a标签内的不处理跳过
                                        if(domUtils.findParentByTagName(text,'a',true)){
                                            range.setStartBefore(text).setCursor();
                                             domUtils.remove(text);
                                             return;
                                         }
                                         me.execCommand( 'removeFormat','span,a', style );
                                    }

                                    span.style.cssText = style + ':' + value;


                                    text.parentNode.insertBefore(span,text);
                                    //修复，span套span 但样式不继承的问题
                                    if(!browser.ie || browser.ie && browser.version == 9){
                                        var spanParent = span.parentNode;
                                        while(!domUtils.isBlockElm(spanParent)){
                                            if(spanParent.tagName == 'SPAN'){
                                                span.style.cssText = spanParent.style.cssText + span.style.cssText;
                                            }
                                            spanParent = spanParent.parentNode;
                                        }
                                    }



                                    range.setStart(span,0).setCursor();
                                    //trace:981
                                    //domUtils.mergToParent(span)


                                }
                                domUtils.remove(text)
                            }
                        }

                    }
                    return true;
                },
                queryCommandValue : function (cmdName) {
                    var startNode = this.selection.getStart();
                    //trace:946
                    if(cmdName == 'underline'||cmdName=='strikethrough' ){
                        var tmpNode = startNode,value;
                        while(tmpNode && !domUtils.isBlockElm(tmpNode) && !domUtils.isBody(tmpNode)){
                            if(tmpNode.nodeType == 1){
                                value = domUtils.getComputedStyle( tmpNode, style );

                                if(value != 'none'){
                                    return value;
                                } 
                            }

                            tmpNode = tmpNode.parentNode;
                        }
                        return 'none'
                    }
                    return  domUtils.getComputedStyle( startNode, style );
                },
                queryCommandState : function(cmdName){
                    if(this.highlight){
                       return -1;
                   }
                    if(!(cmdName == 'underline'||cmdName=='strikethrough'))
                        return 0;
                    return this.queryCommandValue(cmdName) == (cmdName == 'underline' ? 'underline' : 'line-through')
                }
            }
        })( p, fonts[p] );
    }
})();