JQuery grid拖动列宽

初稿请大家多多指点。

IE8,Firefox,chrome下测试的。

主要Javascript代码 :

////////////////////////////////////////////////////////////////////////////
//
jQueryGrid
(function($) {
    $.fn.grid 
= function(config){
        
if (this.attr("tagName"== "TABLE"){
            
return create.tableToGrid(this);
        }
else if (config.store && config.columns){
            
if (!config.dataType){
                config.dataType 
= "JSON";
            };
            
if (config.dataType.toUpperCase() == "JSON") {
                
return create.jsonToGrid(this, config);
            }
            
else if (config.dataType.toUpperCase() == "XML") {
                
return create.xmlToGrid(this, config);
            }
        };
    };
    
    
var create = {
        ui: 
function(jQueryGrid){
            
var down = false;
            
var canMove = false;
            
var downCell = null;
            
var minLeft = 0;
            jQueryGrid.find(
".header li").each(function(){
                $(
this).mousemove(function(e){
                    
if(e.pageX-$(this).offset().left-$(this).width()>-2){
                        $(
this).css("cursor",typeof(air)=="undefined"?"w-resize":"move");
                        canMove 
= true;
                    }
else{
                        
if(!down){
                            $(
this).css("cursor","default");
                            canMove 
= false;
                        }
                    }
                }).mousedown(
function(e){
                    
if (canMove) {
                        divDragLine.show();
                        divDragLine.css(
"left", e.pageX);
                        down 
= true;
                        downCell 
= $(this);
                        minLeft 
= downCell.offset().left+20;
                        
                        divDragLine2.show();
                        divDragLine2.css(
"left", downCell.offset().left);
                    }
                });
            });
            
            jQueryGrid.mousemove(
function(e){
                
if (down) {
                    
if (minLeft < e.pageX) {
                        divDragLine.css(
"left", e.pageX);
                    }
else {
                        divDragLine.css(
"left", minLeft);
                    }
                }
            }).mouseup(
function(e){
                
if (down) {
                    $(
this).css("cursor""default");
                    divDragLine.hide();
                    divDragLine2.hide();
                    down 
= false;
                    canMove 
= false;
                    
//alert(divDragLine.css("left"));
                    var width = minLeft - downCell.offset().left;
                    
if (minLeft < e.pageX) {
                        width 
= e.pageX - downCell.offset().left;
                    }
                    jQueryGrid.find(
"li[index=" + downCell.attr("index"+ "]").css("width", width);

                    
var width = 0;
                    jQueryGrid.find(
".header li").each(function(){
                        width 
+= $(this).attr("offsetWidth");
                    });

                    
if (width < jQueryGrid.attr("offsetWidth")){
                        width 
= jQueryGrid.attr("offsetWidth")-2;
                    }
                    
                    jQueryGrid.find(
"ul").each(function(){
                        $(
this).css("width",width);
                    });
                }
            });
            
            jQueryGrid.find(
"ul:gt(0)").each(function(){
                $(
this).mouseover(function(){
                    
if (!$(this).hasClass("row-selected")) {
                        $(
this).addClass("row-over");
                    }
                }).mouseout(
function(){
                    $(
this).removeClass("row-over");
                }).dblclick(
function(){
                    jQueryGrid.find(
".row-selected").removeClass("row-selected");
                    $(
this).addClass("row-selected").removeClass("row-over");
                    
                    
var rowData = {};
                    
if (jQueryGrid.store){
                        rowData 
=     jQueryGrid.store[$(this).attr("index")];
                    }
                    jQueryGrid.trigger(
"rowdblclick",[$(this),rowData]);
                });
            });
            
            
var divDragLine = jQueryGrid.find(".divDragLine");
            
var divDragLine2 = jQueryGrid.find(".divDragLine2");
            divDragLine.css(
"height",jQueryGrid.height()-25).hide();
            divDragLine2.css(
"height",jQueryGrid.height()-25).hide();
        },
        
//把普通的table转换为jQueryGrid
        tableToGrid: function(table){
            
var colIndex = 0;
            
var rows = table.find("tr:eq(0)");
            
var html = [];
            html.push(
"<div class='divDragLine'></div><div class='divDragLine2'></div><ul class='header'>");
            rows.children().each(
function(){
                html.push(
"<li style='width:"+$(this).width()+"px;' index='"+(colIndex++)+"'>"+$(this).html()+"</li>");
            });
            html.push(
"</ul>");
            
            rows 
= table.find("tr:gt(0)");
            
var row_alt = "row-alt";
            rows.each(
function(){
                
if (row_alt){
                    row_alt 
= "";
                }
else{
                    row_alt 
= "row-alt";
                }
                html.push(
"<ul class='row "+row_alt+"'>");
                colIndex 
= 0;
                
var cells = $(this).children().each(function(){
                    html.push(
"<li style='width:"+$(this).width()+"px;' index='"+(colIndex++)+"'>"+$(this).html()+"</li>");
                });
                html.push(
"</ul>");
            });
            

            table.wrap(
"<div class='jQueryGrid'></div>");
            
            
var jQueryGrid = table.parent();
            jQueryGrid.html(html.join(
""));
            
this.ui(jQueryGrid);
            
            
return jQueryGrid;
        },
        
//把json数据源转换为jQueryGrid
        jsonToGrid: function(appendTo,config){
            
if (appendTo.find(".jQueryGrid").length == 0) {
                $(
"<div class='jQueryGrid'></div>").appendTo(appendTo);
            };
            
var jQueryGrid = appendTo.find(".jQueryGrid");
            
            
var colIndex = 0;
            
var html = ["<div class='divDragLine'></div><div class='divDragLine2'></div><ul class='header'>"];
            
var storeLen = config.store?config.store.length:0;
            
var columnsLen = config.columns.length;
            
for(var c = 0; c < columnsLen; c++){
                
var column = config.columns[c];
                html.push(
"<li style='");
                
if (column.hidden){
                    html.push(
"display:none;");
                };
                
if (column.width){
                    html.push(
"width:"+column.width+"px;");
                };
                html.push(
"'  index='"+(colIndex++)+"' >"+column.header+"</li>");
            }
            html.push(
"</ul>");
            
            
var row_alt = "row-alt";
            
for(var i = 0; i < storeLen; i++){
                
if (row_alt){
                    row_alt 
= "";
                }
else{
                    row_alt 
= "row-alt";
                }
                html.push(
"<ul  class='row "+row_alt+"'  index='"+i+"'>");
                colIndex 
= 0;
                
var row = config.store[i];
                
for(var c = 0; c < columnsLen; c++){
                    
var column = config.columns[c];
                    
                    html.push(
"<li style='");
                    
if (column.hidden){
                        html.push(
"display:none;");
                    };
                    
if (column.width){
                        html.push(
"width:"+column.width+"px;");
                    };
                    
                    
var value = row[column.dataIndex];
                    
if (typeof(column.renderer) == "function"){
                        value 
= column.renderer(value,row,i);
                    };
    
                    html.push(
"'  index='"+(colIndex++)+"' >"+value+"</li>");
                }
                html.push(
"</ul>");
            }
            jQueryGrid.html(html.join(
""));
            jQueryGrid.store 
= config.store;
            
this.ui(jQueryGrid);
            
            
return jQueryGrid;
        },
        
//把xml数据源转换为jQueryGrid
        xmlToGrid: function(appendTo, config){
            
        }
    };

})(jQuery);

 

附件下载:jQueryGrid.rar 

posted @ 2011-06-13 18:30  吴永富  阅读(1711)  评论(0编辑  收藏  举报