这周的工作是研究dojo grid 的树状gird。但是大部分时间用来改各种各样的bug了,一共没有两天来调查这个东西，从网上找了一些例子，分享一下。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>dojox.grid.TreeGrid Lazy-loading for children items test</title>
<Meta http-equiv="Content-Type" content="text/html; charset=utf-8"></Meta>
<style type="text/css">
@import "web/dojo/dojo/resources/dojo.css";
@import "web/dojo/dijit/themes/claro/claro.css";
@import "web/dojo/dojox/grid/resources/Grid.css";
@import "web/dojo/dojox/grid/resources/tundraGrid.css";
@import "web/dojo/dojox/grid/resources/claroGrid.css";
body {
font-size: 0.9em;
font-family: Geneva,Arial,Helvetica,sans-serif;
padding: 0.5em;
}
.title {
text-align:center;
margin:1em;
}
#grid1 {
width: 65em;
height: 25em;
border: 1px solid #333333;
}
#grid2 {
width: 65em;
height: 25em;
border: 1px solid #333333;
}
</style>
<script type="text/javascript" src="web/dojo/dojo/dojo.js" djConfig="isDebug:true,parSEOnLoad: true"></script>
<script type="text/javascript">
dojo.require("dojox.grid.LazyTreeGrid");
dojo.require("dojo.data.ItemFileWriteStore");
dojo.require("dijit.tree.ForestStoreModel");
dojo.require("dojox.grid.LazyTreeGridStoreModel");
dojo.require("dijit.form.Button");
// large dataset
var rows = 5;
//1 -------------->定义一个json字符串continentItems.用来描述大陆
var continentItems = [
{name:'South America',type:'continent',population:'',area:''},{name:'North America',{name:'Asia',{name:'Oceania',{name:'Europe',area:''}
];
//1 end
//2 -------------定义一个数组continentChildrenList，用来存放5项大陆名称
var continentChildrenList = [];
for(var i=0,l=continentItems.length; i<rows; i++){
continentChildrenList.push(dojo.mixin({ id: 'continent_' + i },continentItems[i%l]));
}
//2 end
//3 -------------定义一个json字符串countryItems，用来描述国家名称。
rows = 100;
var countryItems = [
{name:'Egypt',type:'country',{name: 'Kenya',type: 'country',{name:'Sudan',{name:'China',{name:'India',{name:'Russia',{name:'Mongolia',area:'' },{name:'Australia',population:'21 million',{name:'Germany',{name:'France',{name:'Spain',{name:'Italy',{name:'Mexico',population:'108 million',area:'1,972,550 sq km'},{name:'Canada',population:'33 million',area:'9,984,670 sq km'},{name:'United States of America',{name:'Brazil',population:'186 million',{name:'Argentina',population:'40 million',area:'' }
];
//3 end
//4 -------------定义一个数组countryChildrenList，用来存放国家名称
var countryChildrenList = [];
for(var i=0,l=countryItems.length; i<rows; i++){
countryChildrenList.push(dojo.mixin({ id: 'country_' + i },countryItems[i%l]));
}
//4 end
//5 -------------定义一个json字符串cityItems，用来描述城市名称。
cityItems = [
{name:'Nairobi',type:'city',{name:'Mombasa',{name:'Khartoum',{name:'Mexico City',population:'19 million',area:'',timezone:'-6 UTC'},{name:'Guadalajara',population:'4 million',timezone:'-6 UTC' },{name:'Ottawa',population:'0.9 million',timezone:'-5 UTC'},{name:'Toronto',population:'2.5 million',timezone:'-5 UTC' },];
//5 end
//6 -------------定义一个数组cityChildrenList，用来存放城市名称
var cityChildrenList = [];
for(var i=0,l=cityItems.length; i<rows; i++){
cityChildrenList.push(dojo.mixin({ id: 'city_' + i },cityItems[i%l]));
}
//6 end
//1,continentChildrenList: 大洲
//2,countryChildrenList: 国家
//3,cityChildrenList: 城市
var dataItems = {
identifier: 'id',label: 'name',items: [
{id:'Continent',name:'Continent',type:'',population: '',area: '',children: continentChildrenList},{id:"Country",name:"Country",type:"",children: countryChildrenList},{id:"City",name:"City",children: cityChildrenList}
]
};
var readStore = new dojo.data.ItemFileReadStore({data: dataItems});
//注意countryStore的json数据
var writeStore = new dojo.data.ItemFileWriteStore({url: "support/countryStore.json?"});
var model1 = new dijit.tree.ForestStoreModel({store: readStore,childrenAttrs: ['children']})
var model2 = new dojox.grid.LazyTreeGridStoreModel({store: writeStore,childrenAttrs: ['children']});
var layout = [
{name: 'Name',field: 'name',width: 'auto'},{name: 'Type',field: 'type',{name: 'Population',field: 'population',{name: 'Area',field: 'area',width: 'auto'}
]
function refresh(flg){
grid2.refresh(flg);
}
var idx = 0;
//增加一项
function addItem(){
var item = {id:'test_' + idx,name:'test_' + (idx++),area: ''};
grid2.store.newItem(item);
}
//增一个子节点
function addChildItem(){
var parentItem = grid2.selection.getSelected()[0];
if(parentItem){
var item = {id:'test_child_' + idx,name:'test_child_' + (idx++),area: ''};
grid2.store.newItem(item,{parent: parentItem,attribute: "children"});
}
}
//移除掉一个子节点。
function removeSelected(){
grid2.removeSelectedRows();
}
//展开所有节点
function expandSelected(){
var item = grid2.selection.getSelected()[0];
if(item){
grid2.expand(grid2.store.getIdentity(item));
}
}
//收缩所有节点。
function collapseSelected(){
var item = grid2.selection.getSelected()[0];
if(item){
grid2.collapse(grid2.store.getIdentity(item));
}
}
dojo.addOnLoad(
function()
{
alert("wawawa1");
}
);
</script>
</head>
<body class="claro">
<h1 class="title">Test: dojox.grid.TreeGrid - Lazy-loading for children items</h1>
<h2>grid 1</h2>
<div id='grid1' jsid='grid1' dojoType='dojox.grid.LazyTreeGrid' summary="A customized tree grid summary"
structure='layout' treeModel='model1' rowSelector='true'></div>
<h2>grid 2</h2>
<div id='grid2' jsid='grid2' dojoType='dojox.grid.LazyTreeGrid'
structure='layout' treeModel='model2'
keepSelection='true' rowSelector='true'></div>
<button dojoType="dijit.form.Button" onClick="refresh(true)">Refresh with state</button>
<button dojoType="dijit.form.Button" onClick="refresh(false)">Refresh without state</button>
<button dojoType="dijit.form.Button" onClick="addItem()">Add Item</button>
<button dojoType="dijit.form.Button" onClick="addChildItem()">Add Child Item</button>
<button dojoType="dijit.form.Button" onClick="removeSelected()">Delete Selected</button>
<button dojoType="dijit.form.Button" onClick="expandSelected()">Expand Selected</button>
<button dojoType="dijit.form.Button" onClick="collapseSelected()">Collapse Selected</button>
</body>
</html>
countryStore.json数据：
{ identifier: 'name',items: [ { name:'Africa',children:[ { name:'Egypt',type:'country' },{ name:'Kenya',children:[ { name:'Nairobi',adults: 70400,popnum: 2940911 },{ name:'Mombasa',adults: 294091,popnum: 707400 } ] },{ name:'Sudan',children: { name:'Khartoum',adults: 480293,popnum: 1200394 } } ] },{ name:'Asia',children:[ { name:'China',{ name:'India',{ name:'Russia',{ name:'Mongolia',type:'country' } ] },{ name:'Australia',children: { name:'Commonwealth of Australia',population:'21 million'} },{ name:'Europe',children:[ { name:'Germany',{ name:'France',{ name:'Spain',{ name:'Italy',{ name:'North America',children:[ { name:'Mexico',550 sq km',children:[ { name:'Mexico City',adults: 120394,popnum: 19394839,{ name:'Guadalajara',adults: 1934839,popnum: 4830293,timezone:'-6 UTC' } ] },{ name:'Canada',670 sq km',children:[ { name:'Ottawa',adults: 230493,popnum: 9382019,{ name:'Toronto',adults: 932019,popnum: 2530493,timezone:'-5 UTC' }] },{ name:'United States of America',{ name:'South America',children:[ { name:'Brazil',population:'186 million' },{ name:'Argentina',population:'40 million' } ] } ] }
上面的例子是dojo grid的延迟加载，是读取json文件。我做的例子从后台传回数据与json文件的数据格式一样了，但是还没有绑定到grid中，还需要在查找一些资料
原文链接：https://www.f2er.com/dojo/291493.html