带子项的展开收缩。
代码：
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>SlickGrid example 5: Collapsing</title>
<link rel="stylesheet" href="../slick.grid.css" type="text/css"/>
<link rel="stylesheet" href="../css/smoothness/jquery-ui-1.8.16.custom.css" type="text/css"/>
<link rel="stylesheet" href="examples.css" type="text/css"/>
<style>
.cell-title {
font-weight: bold;
}
.cell-effort-driven {
text-align: center;
}
.toggle {
height: 9px;
width: 9px;
display: inline-block;
}
.toggle.expand {
background: url(../images/expand.gif) no-repeat center center;
}
.toggle.collapse {
background: url(../images/collapse.gif) no-repeat center center;
}
</style>
</head>
<body>
<table width="100%">
<tr>
<td valign="top" width="50%">
<div style="border:1px solid gray;background:wheat;padding:6px;">
<label>Show tasks with % at least: </label>
<div style="padding:4px;">
<div style="100px;" id="pcSlider"></div>
</div>
<br/>
<label>And title including:</label>
<input type=text id="txtSearch">
</div>
<br/>
<div id="myGrid" style="600px;height:500px;"></div>
</td>
<td valign="top">
<h2>Demonstrates:</h2>
<ul>
<li>implementing expand/collapse as a filter for DataView</li>
</ul>
</td>
</tr>
</table>
<script src="../lib/firebugx.js"></script>
<script src="../lib/jquery-1.7.min.js"></script>
<script src="../lib/jquery-ui-1.8.16.custom.min.js"></script>
<script src="../lib/jquery.event.drag-2.0.min.js"></script>
<script src="../slick.core.js"></script>
<script src="../slick.formatters.js"></script>
<script src="../slick.editors.js"></script>
<script src="../slick.grid.js"></script>
<script src="../slick.dataview.js"></script>
<script>
function requiredFieldValidator(value) {
if (value == null || value == undefined || !value.length) {
return {valid: false, msg: "This is a required field"};
} else {
return {valid: true, msg: null};
}
}
var TaskNameFormatter = function (row, cell, value, columnDef, dataContext) {
value = value.replace(/&/g,"&").replace(/</g,"<").replace(/>/g,">");
var spacer = "<span style='display:inline-block;height:1px;" + (15 。 dataContext["indent"]) + "px'></span>";
var idx = dataView.getIdxById(dataContext.id);
if (data[idx + 1] && data[idx + 1].indent > data[idx].indent) {
if (dataContext._collapsed) {
return spacer + " <span class='toggle expand'></span> " + value;
} else {
return spacer + " <span class='toggle collapse'></span> " + value;
}
} else {
return spacer + " <span class='toggle'></span> " + value;
}
};
var dataView;
var grid;
var data = [];
var columns = [
{id: "title", name: "Title", field: "title", 220, cssClass: "cell-title", formatter: TaskNameFormatter, editor: Slick.Editors.Text, validator: requiredFieldValidator},
{id: "duration", name: "Duration", field: "duration", editor: Slick.Editors.Text},
{id: "%", name: "% Complete", field: "percentComplete", 80, resizable: false, formatter: Slick.Formatters.PercentCompleteBar, editor: Slick.Editors.PercentComplete},
{id: "start", name: "Start", field: "start", minWidth: 60, editor: Slick.Editors.Date},
{id: "finish", name: "Finish", field: "finish", minWidth: 60, editor: Slick.Editors.Date},
{id: "effort-driven", name: "Effort Driven", 80, minWidth: 20, maxWidth: 80, cssClass: "cell-effort-driven", field: "effortDriven", formatter: Slick.Formatters.Checkmark, editor: Slick.Editors.Checkbox, cannotTriggerInsert: true}
];
var options = {
editable: true,
enableAddRow: true,
enableCellNavigation: true,
asyncEditorLoading: false
};
var percentCompleteThreshold = 0;
var searchString = "";
function myFilter(item) {
if (item["percentComplete"] < percentCompleteThreshold) {
return false;
}
if (searchString != "" && item["title"].indexOf(searchString) == -1) {
return false;
}
if (item.parent != null) {
var parent = data[item.parent];
while (parent) {
if (parent._collapsed || (parent["percentComplete"] < percentCompleteThreshold) || (searchString != "" && parent["title"].indexOf(searchString) == -1)) {
return false;
}
parent = data[parent.parent];
}
}
return true;
}
function percentCompleteSort(a, b) {
return a["percentComplete"] - b["percentComplete"];
}
$(function () {
var indent = 0;
var parents = [];
// prepare the data
for (var i = 0; i < 1000; i++) {
var d = (data[i] = {});
var parent = null;
if (Math.random() > 0.8) {
indent++;
parent = i - 1;
parents.push(parent);
} else if (Math.random() < 0.3 && indent > 0) {
indent--;
parent = parents.pop();
} else if (parents.length > 0) {
parent = parents[parents.length - 1];
}
if (indent == 0) {
parent = null;
}
d["id"] = "id_" + i;
d["indent"] = indent;
d["parent"] = parent;
d["title"] = "Task " + i;
d["duration"] = "5 days";
d["percentComplete"] = Math.round(Math.random() * 100);
d["start"] = "01/01/2009";
d["finish"] = "01/05/2009";
d["effortDriven"] = (i % 5 == 0);
}
// initialize the model
dataView = new Slick.Data.DataView({ inlineFilters: true });
dataView.beginUpdate();
dataView.setItems(data);
dataView.setFilter(myFilter);
dataView.endUpdate();
// initialize the grid
grid = new Slick.Grid("#myGrid", dataView, columns, options);
grid.onCellChange.subscribe(function (e, args) {
dataView.updateItem(args.item.id, args.item);
});
grid.onAddNewRow.subscribe(function (e, args) {
var item = {
"id": "new_" + (Math.round(Math.random() * 10000)),
"indent": 0,
"title": "New task",
"duration": "1 day",
"percentComplete": 0,
"start": "01/01/2009",
"finish": "01/01/2009",
"effortDriven": false};
$.extend(item, args.item);
dataView.addItem(item);
});
grid.onClick.subscribe(function (e, args) {
if ($(e.target).hasClass("toggle")) {
var item = dataView.getItem(args.row);
if (item) {
if (!item._collapsed) {
item._collapsed = true;
} else {
item._collapsed = false;
}
dataView.updateItem(item.id, item);
}
e.stopImmediatePropagation();
}
});
// wire up model events to drive the grid
dataView.onRowCountChanged.subscribe(function (e, args) {
grid.updateRowCount();
grid.render();
});
dataView.onRowsChanged.subscribe(function (e, args) {
grid.invalidateRows(args.rows);
grid.render();
});
var h_runfilters = null;
// wire up the slider to apply the filter to the model
$("#pcSlider").slider({
"range": "min",
"slide": function (event, ui) {
Slick.GlobalEditorLock.cancelCurrentEdit();
if (percentCompleteThreshold != ui.value) {
window.clearTimeout(h_runfilters);
h_runfilters = window.setTimeout(dataView.refresh, 10);
percentCompleteThreshold = ui.value;
}
}
});
// wire up the search textbox to apply the filter to the model
$("#txtSearch").keyup(function (e) {
Slick.GlobalEditorLock.cancelCurrentEdit();
// clear on Esc
if (e.which == 27) {
this.value = "";
}
searchString = this.value;
dataView.refresh();
})
})
</script>
</body>
</html>