Feb 19, 2014, 12:55 AM
Multiple Drag/Drop zones in one Grid
Hi
I have a grid that participates in drag/drop in a couple of ways. It can receive data from a GridPanel (one way) plus I can drag its contents to another Grid Panel (one way).
So flow is
Grid 1 --> Grid 2 --> Grid 3
This is working by setting up relevant Drag/Drop Zones via js. However what I want to be able to do is allow Grid Reordering in Grid 2. I have tried to implement the GridDragDrop plugin into Grid 2 but I cant get it to work. It seems that the Node events are firing from one group to the other. I have given each of these their own DDGroup or Group names and I thought this would prevent them from interfering but it doesnt seem to be.
It's a slightly complicated setup and trying to send you an example will be very lengthy I should think. The best I can do is use a current example which looks like suffers from the same issue.
I have modified the Field to Grid example to illustrate my problem. Please look for the following changes:
1. Add GridDragDrop into GridPanel (Given its own name)
2. Given Drag/Drop zones their own Group names
This throws errors when dragging. Ultimately I would like them not to interfere with each other. I think if we get to the bottom of this example it will fix my problem.
Full working example
Glen
I have a grid that participates in drag/drop in a couple of ways. It can receive data from a GridPanel (one way) plus I can drag its contents to another Grid Panel (one way).
So flow is
Grid 1 --> Grid 2 --> Grid 3
This is working by setting up relevant Drag/Drop Zones via js. However what I want to be able to do is allow Grid Reordering in Grid 2. I have tried to implement the GridDragDrop plugin into Grid 2 but I cant get it to work. It seems that the Node events are firing from one group to the other. I have given each of these their own DDGroup or Group names and I thought this would prevent them from interfering but it doesnt seem to be.
It's a slightly complicated setup and trying to send you an example will be very lengthy I should think. The best I can do is use a current example which looks like suffers from the same issue.
I have modified the Field to Grid example to illustrate my problem. Please look for the following changes:
1. Add GridDragDrop into GridPanel (Given its own name)
2. Given Drag/Drop zones their own Group names
This throws errors when dragging. Ultimately I would like them not to interfere with each other. I think if we get to the bottom of this example it will fix my problem.
Full working example
<script runat="server">
private object[] TestData
{
get
{
DateTime now = DateTime.Now;
return new object[]
{
new object[] { "3m Co", 71.72, 0.02, 0.03, now },
new object[] { "Alcoa Inc", 29.01, 0.42, 1.47, now },
new object[] { "Altria Group Inc", 83.81, 0.28, 0.34, now },
new object[] { "American Express Company", 52.55, 0.01, 0.02, now },
new object[] { "American International Group, Inc.", 64.13, 0.31, 0.49, now },
new object[] { "AT&T Inc.", 31.61, -0.48, -1.54, now },
new object[] { "Boeing Co.", 75.43, 0.53, 0.71, now },
new object[] { "Caterpillar Inc.", 67.27, 0.92, 1.39, now },
new object[] { "Citigroup, Inc.", 49.37, 0.02, 0.04, now },
new object[] { "E.I. du Pont de Nemours and Company", 40.48, 0.51, 1.28, now },
new object[] { "Exxon Mobil Corp", 68.1, -0.43, -0.64, now },
new object[] { "General Electric Company", 34.14, -0.08, -0.23, now },
new object[] { "General Motors Corporation", 30.27, 1.09, 3.74, now },
new object[] { "Hewlett-Packard Co.", 36.53, -0.03, -0.08, now },
new object[] { "Honeywell Intl Inc", 38.77, 0.05, 0.13, now },
new object[] { "Intel Corporation", 19.88, 0.31, 1.58, now },
new object[] { "International Business Machines", 81.41, 0.44, 0.54, now },
new object[] { "Johnson & Johnson", 64.72, 0.06, 0.09, now },
new object[] { "JP Morgan & Chase & Co", 45.73, 0.07, 0.15, now },
new object[] { "McDonald\"s Corporation", 36.76, 0.86, 2.40, now },
new object[] { "Merck & Co., Inc.", 40.96, 0.41, 1.01, now },
new object[] { "Microsoft Corporation", 25.84, 0.14, 0.54, now },
new object[] { "Pfizer Inc", 27.96, 0.4, 1.45, now },
new object[] { "The Coca-Cola Company", 45.07, 0.26, 0.58, now },
new object[] { "The Home Depot, Inc.", 34.64, 0.35, 1.02, now },
new object[] { "The Procter & Gamble Company", 61.91, 0.01, 0.02, now },
new object[] { "United Technologies Corporation", 63.26, 0.55, 0.88, now },
new object[] { "Verizon Communications", 35.57, 0.39, 1.11, now },
new object[] { "Wal-Mart Stores, Inc.", 45.45, 0.73, 1.63, now }
};
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!X.IsAjaxRequest)
{
this.Store1.DataSource = this.TestData;
}
}
protected void MyData_Refresh(object sender, StoreReadDataEventArgs e)
{
this.Store1.DataSource = this.TestData;
this.Store1.DataBind();
}
</script>
<!DOCTYPE html>
<html>
<head id="Head1" runat="server">
<title>Field to Grid - Ext.NET Examples</title>
<link href="/resources/css/examples.css" rel="stylesheet" />
<style>
.x-drop-target-active {
background-color : #D88;
}
</style>
<script>
var template = '<span style="color:{0};">{1}</span>';
var change = function (value) {
return Ext.String.format(template, (value > 0) ? "green" : "red", value);
};
var pctChange = function (value) {
return Ext.String.format(template, (value > 0) ? "green" : "red", value + "%");
};
//---DD-------------------
var getTargetFromEvent = function (e) {
var grid = App.GridPanel1,
t = e.getTarget(grid.view.getCellSelector());
if (t) {
var row = grid.view.findItemByChild(t),
columnIndex = t.cellIndex;
if (row && Ext.isDefined(columnIndex)) {
return {
node: t,
record: grid.view.getRecord(row),
fieldName: grid.columns[columnIndex].dataIndex
}
}
}
};
var onNodeEnter = function (target, dd, e, dragData) {
delete this.dropOK;
if (!target) {
return;
}
var f = dragData.field;
if (!f) {
return;
}
var type = target.record.fields.get(target.fieldName).type;
switch (type) {
case Ext.data.Types.FLOAT:
case Ext.data.Types.INT:
if (!f.isXType("numberfield")) {
return;
}
break;
case Ext.data.Types.DATE:
if (!f.isXType("datefield")) {
return;
}
break;
case Ext.data.Types.BOOL:
if (!f.isXType("checkbox")) {
return;
}
}
this.dropOK = true;
Ext.fly(target.node).addCls("x-drop-target-active");
};
var onNodeOver = function (target, dd, e, dragData) {
return this.dropOK ? this.dropAllowed : this.dropNotAllowed;
};
var onNodeOut = function (target, dd, e, dragData) {
Ext.fly(target.node).removeCls("x-drop-target-active");
};
var onNodeDrop = function (target, dd, e, dragData) {
if (this.dropOK) {
var value = dragData.field.getValue();
target.record.set(target.fieldName, value);
this.onCellDrop(target.fieldName, value);
return true;
}
};
var onCellDrop = function (field) {
var sorter = App.Store1.sorters.first();
if (sorter && sorter.property == field) {
App.Store1.sort();
}
};
var getDragData = function (e) {
var targetLabel = e.getTarget('label', null, true),
field,
oldMark,
dragEl;
if (targetLabel) {
//Get the data we are dragging: the Field
//create a ddel for the drag proxy to display
field = Ext.getCmp(targetLabel.up('.' + Ext.form.Labelable.prototype.formItemCls).id);
// Temporary prevent marking the field as invalid, since it causes changes
// to the underlying dom element which can cause problems in IE
oldMark = field.preventMark;
field.preventMark = true;
if (field.isValid()) {
field.preventMark = oldMark;
dragEl = document.createElement('div');
dragEl.className = 'x-form-text';
dragEl.appendChild(document.createTextNode(field.getRawValue()));
Ext.fly(dragEl).setWidth(field.getEl().getWidth());
return {
field: field,
ddel: dragEl
};
} else {
e.stopEvent();
}
field.preventMark = oldMark;
}
};
var getRepairXY = function () {
return this.dragData.field.getEl().getXY();
};
</script>
</head>
<body>
<form id="Form1" runat="server">
<ext:ResourceManager ID="ResourceManager1" runat="server" />
<h1>Using a GridPanel as a DropZone managing each grid cell as a target</h1>
<p>This example assumes prior knowledge of using a GridPanel.</p>
<p>This illustrates how a DragZone can manage an arbitrary number of drag sources, and
how a DropZone can manage an arbitrary number of targets.</p>
<p>Fields are editable. Drag the fields into the grid using the <b>label</b> as the handle.</p>
<ext:GridPanel
ID="GridPanel1"
runat="server"
Title="Grid"
Width="600"
Height="350">
<Store>
<ext:Store
ID="Store1"
runat="server"
OnRefreshData="MyData_Refresh"
PageSize="10">
<Model>
<ext:Model ID="Model1" runat="server">
<Fields>
<ext:ModelField Name="company" Type="String" />
<ext:ModelField Name="price" Type="Float" />
<ext:ModelField Name="change" Type="Float" />
<ext:ModelField Name="pctChange" Type="Float" />
<ext:ModelField Name="lastChange" Type="Date" />
</Fields>
</ext:Model>
</Model>
</ext:Store>
</Store>
<ColumnModel ID="ColumnModel1" runat="server">
<Columns>
<ext:Column ID="Column1" runat="server" Text="Company" DataIndex="company" Flex="1" />
<ext:Column ID="Column2" runat="server" Text="Price" DataIndex="price">
<Renderer Format="UsMoney" />
</ext:Column>
<ext:Column ID="Column3" runat="server" Text="Change" DataIndex="change">
<Renderer Fn="change" />
</ext:Column>
<ext:Column ID="Column4" runat="server" Text="Change" DataIndex="pctChange">
<Renderer Fn="pctChange" />
</ext:Column>
<ext:DateColumn ID="DateColumn1" runat="server" Text="Last Updated" DataIndex="lastChange" />
</Columns>
</ColumnModel>
<View>
<ext:GridView runat="server">
<Plugins>
<ext:GridDragDrop runat="server" DDGroup="Group2"/>
</Plugins>
</ext:GridView>
</View>
</ext:GridPanel>
<ext:Panel
ID="Panel1"
runat="server"
Frame="true"
Width="600">
<Items>
<ext:TextField ID="TextField1" runat="server" FieldLabel="Drag this text" Text="test" />
<ext:NumberField ID="NumberField1" runat="server" FieldLabel="Drag this number" Number="1.2" />
<ext:DateField ID="DateField1"
runat="server"
FieldLabel="Drag this date"
SelectedDate="<%# DateTime.Now %>"
AutoDataBind="true" />
</Items>
</ext:Panel>
<ext:DropZone ID="DropZone1" runat="server" ContainerScroll="true" Group="ddGroup1" Target="={#{GridPanel1}.view.el}">
<GetTargetFromEvent Fn="getTargetFromEvent" />
<OnNodeEnter Fn="onNodeEnter" />
<OnNodeOver Fn="onNodeOver" />
<OnNodeOut Fn="onNodeOut" />
<OnNodeDrop Fn="onNodeDrop" />
<CustomConfig>
<ext:ConfigItem Name="onCellDrop" Value="onCellDrop" Mode="Raw" />
</CustomConfig>
</ext:DropZone>
<ext:DragZone ID="DragZone1" runat="server" Target="={#{Panel1}.getEl()}" Group="ddGroup1">
<GetDragData Fn="getDragData" />
<GetRepairXY Fn="getRepairXY" />
</ext:DragZone>
</form>
</body>
</html>Glen
