<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>Cache Editor for DataGrid - jQuery EasyUI Demo</title>
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<link rel="stylesheet" type="text/css" href="../../themes/default/easyui.css">
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<link rel="stylesheet" type="text/css" href="../../themes/icon.css">
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<link rel="stylesheet" type="text/css" href="../demo.css">
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<script type="text/javascript" src="../../jquery.min.js"></script>
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<script type="text/javascript" src="../../jquery.easyui.min.js"></script>
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</head>
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<body>
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<h2>Cache Editor for DataGrid</h2>
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<p>This example shows how to cache the editors for datagrid to improve the editing speed.</p>
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<div style="margin:20px 0;"></div>
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<table id="dg" class="easyui-datagrid" title="Cache Editor for DataGrid" style="width:700px;height:auto"
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data-options="
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iconCls: 'icon-edit',
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singleSelect: true,
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toolbar: '#tb',
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url: 'datagrid_data1.json',
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method: 'get',
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onClickRow: onClickRow
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">
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<thead>
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<tr>
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<th data-options="field:'itemid',width:80">Item ID</th>
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<th data-options="field:'productid',width:100,
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formatter:function(value,row){
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return row.productname;
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},
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editor:{
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type:'combobox',
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options:{
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valueField:'productid',
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textField:'productname',
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method:'get',
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url:'products.json',
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required:true
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}
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}">Product</th>
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<th data-options="field:'listprice',width:80,align:'right',editor:{type:'numberbox',options:{precision:2}}">List Price</th>
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<th data-options="field:'unitcost',width:80,align:'right',editor:{type:'numberbox',options:{precision:2}}">Unit Cost</th>
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<th data-options="field:'attr1',width:250,editor:'text'">Attribute</th>
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<th data-options="field:'status',width:60,align:'center',editor:{type:'checkbox',options:{on:'P',off:''}}">Status</th>
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</tr>
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</thead>
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</table>
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<div id="tb" style="height:auto">
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<a href="javascript:void(0)" class="easyui-linkbutton" data-options="iconCls:'icon-save',plain:true" onclick="accept()">Accept</a>
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<a href="javascript:void(0)" class="easyui-linkbutton" data-options="iconCls:'icon-undo',plain:true" onclick="reject()">Reject</a>
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<a href="javascript:void(0)" class="easyui-linkbutton" data-options="iconCls:'icon-search',plain:true" onclick="getChanges()">GetChanges</a>
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</div>
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<script type="text/javascript">
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(function($){
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function getCacheContainer(t){
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var view = $(t).closest('div.datagrid-view');
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var c = view.children('div.datagrid-editor-cache');
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if (!c.length){
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c = $('<div class="datagrid-editor-cache" style="position:absolute;display:none"></div>').appendTo(view);
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}
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return c;
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}
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function getCacheEditor(t, field){
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var c = getCacheContainer(t);
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return c.children('div.datagrid-editor-cache-' + field);
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}
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function setCacheEditor(t, field, editor){
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var c = getCacheContainer(t);
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c.children('div.datagrid-editor-cache-' + field).remove();
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var e = $('<div class="datagrid-editor-cache-' + field + '"></div>').appendTo(c);
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e.append(editor);
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}
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var editors = $.fn.datagrid.defaults.editors;
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for(var editor in editors){
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var opts = editors[editor];
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(function(){
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var init = opts.init;
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opts.init = function(container, options){
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var field = $(container).closest('td[field]').attr('field');
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var ed = getCacheEditor(container, field);
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if (ed.length){
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ed.appendTo(container);
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return ed.find('.datagrid-editable-input');
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} else {
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return init(container, options);
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}
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}
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})();
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(function(){
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var destroy = opts.destroy;
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opts.destroy = function(target){
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if ($(target).hasClass('datagrid-editable-input')){
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var field = $(target).closest('td[field]').attr('field');
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setCacheEditor(target, field, $(target).parent().children());
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} else if (destroy){
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destroy(target);
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}
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}
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})();
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}
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})(jQuery);
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</script>
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<script type="text/javascript">
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var editIndex = undefined;
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function endEditing(){
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if (editIndex == undefined){return true}
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if ($('#dg').datagrid('validateRow', editIndex)){
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var ed = $('#dg').datagrid('getEditor', {index:editIndex,field:'productid'});
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var productname = $(ed.target).combobox('getText');
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$('#dg').datagrid('getRows')[editIndex]['productname'] = productname;
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$('#dg').datagrid('endEdit', editIndex);
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editIndex = undefined;
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return true;
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} else {
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return false;
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}
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}
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function onClickRow(index){
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if (editIndex != index){
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if (endEditing()){
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$('#dg').datagrid('selectRow', index)
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.datagrid('beginEdit', index);
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editIndex = index;
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} else {
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$('#dg').datagrid('selectRow', editIndex);
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}
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}
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}
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function accept(){
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if (endEditing()){
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$('#dg').datagrid('acceptChanges');
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}
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}
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function reject(){
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$('#dg').datagrid('rejectChanges');
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editIndex = undefined;
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}
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function getChanges(){
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var rows = $('#dg').datagrid('getChanges');
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alert(rows.length+' rows are changed!');
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}
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</script>
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</body>
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</html>
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