AdvancedDataGrid に GroupItemrenderer としてチェックボックスがあります。ツリーで特定の子ノードを選択し、その親を閉じました。後で同じ親ノードを再度開くと、選択した子ノードは選択したものではありません。チェックボックスで正しい選択を保持する方法。 ??
また、コンポーネントからデフォルトでチェックボックス (GroupItemRenderer) の値を設定することも、Data プロパティのチェックボックスの値にアクセスすることもできません。
package
{
import flash.events.KeyboardEvent;
import flash.events.MouseEvent;
import flash.ui.Keyboard;
import mx.collections.ICollectionView;
import mx.collections.IHierarchicalCollectionView;
import mx.collections.IHierarchicalData;
import mx.collections.IViewCursor;
import mx.controls.AdvancedDataGrid;
import mx.controls.Alert;
import mx.controls.CheckBox;
import mx.controls.Image;
import mx.controls.advancedDataGridClasses.AdvancedDataGridColumn;
import mx.controls.advancedDataGridClasses.AdvancedDataGridGroupItemRenderer;
import mx.controls.advancedDataGridClasses.AdvancedDataGridListData;
import mx.core.FlexGlobals;
import mx.core.mx_internal;
use namespace mx_internal;
public class CheckADGRenderer extends AdvancedDataGridGroupItemRenderer
{
protected var myImage:Image;
public var status:String = "false";
// set image properties
private var imageWidth:Number = 6;
private var imageHeight:Number = 6;
private var inner:String = "inner.png";
protected var myCheckBox:CheckBox;
static private var STATE_SCHRODINGER:String = "schrodinger";
static private var STATE_CHECKED:String = "checked";
static private var STATE_UNCHECKED:String = "unchecked";
public function CheckADGRenderer ()
{
super();
mouseEnabled = false;
}
private function toggleParents(item:Object,adg:AdvancedDataGrid,state:String):void
{
if (item == null)
{
return;
}
else
{
item.@state = false;
toggleParents(adg.getParentItem(item), adg, getState (adg, adg.getParentItem(item)));
}
}
private function toggleChildren (item:Object, adg:AdvancedDataGrid, state:String):void
{
if (item == null)
{
return;
}
else
{
//item.@state = state;
var adgCollection:IHierarchicalCollectionView = adg.dataProvider as IHierarchicalCollectionView;
var adgHD:IHierarchicalData = adgCollection.source;
if (adgHD.hasChildren(item))
{
var children:ICollectionView = adgCollection.getChildren (item);
var cursor:IViewCursor = children.createCursor();
while (!cursor.afterLast)
{
toggleChildren(cursor.current, adg, state);
cursor.moveNext();
}
}
}
}
private function getState(adg:AdvancedDataGrid, parent:Object):String
{
var noChecks:int = 0;
var noCats:int = 0;
var noUnChecks:int = 0;
if (parent != null)
{
var adgCollection:IHierarchicalCollectionView = adg.dataProvider as IHierarchicalCollectionView;
var cursor:IViewCursor = adgCollection.getChildren(parent).createCursor();
}
if ((noChecks > 0 && noUnChecks > 0) || (noCats > 0))
{
return STATE_SCHRODINGER;
}
else if (noChecks > 0)
{
return STATE_CHECKED;
}
else
{
return STATE_UNCHECKED;
}
}
private function imageToggleHandler(event:MouseEvent):void
{
myCheckBox.selected = !myCheckBox.selected;
checkBoxToggleHandler(event);
}
var selectArr:Array = new Array();
private function checkBoxToggleHandler(event:MouseEvent):void
{
if (data)
{
var myListData:AdvancedDataGridListData = AdvancedDataGridListData(this.listData);
var selectedNode:Object = myListData.item;
var adg:AdvancedDataGrid = AdvancedDataGrid(myListData.owner);
var toggle:Boolean = myCheckBox.selected;
if (toggle)
{
toggleChildren(data, adg, STATE_CHECKED);
}
else
{
toggleChildren(data, adg, STATE_UNCHECKED);
}
var parent:Object = adg.getParentItem (data);
toggleParents (parent, adg, getState (adg, parent));
//Alert.show(selectArr.toString()+"\t\t"+selectArr.length+"\t\t"+selectArr[0].length+"\t\t"+adg.selectedIndices.length);
}
}
override protected function createChildren():void
{
super.createChildren();
myCheckBox = new CheckBox();
myCheckBox.setStyle( "verticalAlign", "middle" );
myCheckBox.addEventListener( MouseEvent.CLICK, checkBoxToggleHandler );
addChild(myCheckBox);
}
private function setCheckState (checkBox:CheckBox, value:Object, state:Boolean):void
{
if (state == STATE_CHECKED)
{
checkBox.selected = state;
}
else if (state == STATE_UNCHECKED)
{
checkBox.selected = false;
}
else if (state == STATE_SCHRODINGER)
{
checkBox.selected = false;
}
checkBox.selected = state;
}
override public function set data(value:Object):void
{
super.data = value;
var myListData:AdvancedDataGridListData = AdvancedDataGridListData(this.listData);
//var adg:AdvancedDataGrid = AdvancedDataGrid(myListData.owner);
var selectedNode:Object = myListData.item;
myCheckBox.selected = AdvancedDataGridListData(super.listData).item.show;
//var adg:AdvancedDataGrid = AdvancedDataGrid(myListData.owner);
//setCheckState (myCheckBox, value, Boolean(value.state));
}
override protected function commitProperties():void
{
super.commitProperties();
var dg:AdvancedDataGrid = AdvancedDataGrid(listData.owner);
var column:AdvancedDataGridColumn =
dg.columns[listData.columnIndex];
label.wordWrap = dg.columnWordWrap(column);
}
/**
* @private
*/
override protected function measure():void
{
super.measure();
var w:Number = data ? AdvancedDataGridListData(listData).indent : 0;
if (disclosureIcon)
w += disclosureIcon.width;
if (icon)
w += icon.measuredWidth;
if (myCheckBox)
w += myCheckBox.measuredWidth;
// guarantee that label width isn't zero because it messes up ability to measure
if (label.width < 4 || label.height < 4)
{
label.width = 4;
label.height = 16;
}
if (isNaN(explicitWidth))
{
w += label.getExplicitOrMeasuredWidth();
measuredWidth = w;
}
else
{
label.width = Math.max(explicitWidth - w, 4);
}
measuredHeight = label.getExplicitOrMeasuredHeight();
if (icon && icon.measuredHeight > measuredHeight)
measuredHeight = icon.measuredHeight;
if (myCheckBox && myCheckBox.measuredHeight > measuredHeight)
measuredHeight = myCheckBox.measuredHeight;
}
override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
{
super.updateDisplayList(unscaledWidth, unscaledHeight);
if(super.data)
{
if (super.icon != null)
{
myCheckBox.x = super.icon.x;
myCheckBox.y = (unscaledHeight - myCheckBox.height) / 2;
super.icon.x = myCheckBox.x + myCheckBox.width + 17;
if (icon.x + icon.width > unscaledWidth)
icon.setActualSize(0, unscaledHeight);
super.label.x = super.icon.x + super.icon.width + 3;
super.label.setActualSize(Math.max(unscaledWidth - super.label.x, 4), unscaledHeight);
}
else
{
myCheckBox.x = super.label.x;
myCheckBox.y = (unscaledHeight - myCheckBox.height) / 2;
super.label.x = myCheckBox.x + myCheckBox.width + 17;
super.label.setActualSize(Math.max(unscaledWidth - super.label.x, 4), unscaledHeight);
}
if (myCheckBox.x + myCheckBox.width > unscaledWidth)
myCheckBox.visible = false;
}
trace(label.width);
}
}
}
ADG へのデータプロバイダーとして 2D 配列を使用しています。私の投稿: Flex で既存の配列に属性を動的に追加する方法は、上記の投稿に関連付けられています。