drag and drop d'une list vers un tree
Salut,
Je voudrai faire un drag and drop depuis une liste vers un tree, j;ai trouver un exemple sur le net : http://blog.comtaste.com/upload/DragDropListTree.mxml
Je l'ai adapter a mon code mais ca ne fonctionne pas.
J'ai ce message d'erreur :
Citation:
TypeError: Error #1009: Cannot access a property or method of a null object reference
Ca correspond a cette ligne dans mon code : "(tree.dataProvider as ArrayCollection).addItemAt(obj, index);"
Voici le code complet :
Code:
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|
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:components="flexsamples.components.*"
xmlns:ext="nl.wv.extenders.panel.*"
creationComplete="showWindow();" xmlns:ns1="*">
<fx:Style source="styles/CollapsibleAccordionStyle.css"/>
<fx:Script>
<![CDATA[
import flash.geom.Point;
import mx.charts.ChartItem;
import mx.charts.Legend;
import mx.charts.PieChart;
import mx.charts.chartClasses.ChartBase;
import mx.charts.events.ChartItemEvent;
import mx.charts.series.PieSeries;
import mx.charts.series.items.ColumnSeriesItem;
import mx.collections.ArrayCollection;
import mx.collections.ArrayList;
import mx.collections.ICollectionView;
import mx.collections.XMLListCollection;
import mx.containers.Canvas;
import mx.containers.TitleWindow;
import mx.controls.*;
import mx.core.DragSource;
import mx.core.IUIComponent;
import mx.core.UIComponent;
import mx.events.*;
import mx.events.DragEvent;
import mx.events.FlexEvent;
import mx.managers.DragManager;
import mx.managers.PopUpManager;
import mx.rpc.events.*;
import mx.utils.ArrayUtil;
import nl.wv.extenders.panel.*;
import spark.components.Panel;
import spark.components.RichText;
import spark.components.TitleWindow;
[Bindable]public var usrs:ArrayCollection;
public function showWindow():void {
var login:TitleExample=TitleExample(PopUpManager.createPopUp(
this, TitleExample , true) as spark.components.TitleWindow);
login.x=600;
login.y=200;
login.userType = returnName;
}
public function isAdmin():void
{
services.getOperation('isAdmin').send(returnName.text);
}
public function isAdmin_true(evt:ResultEvent):void
{
if (evt.result == 1)
currentState = 'adm';
else
currentState = 'normal';
getUsers();
}
public function onFault(event:FaultEvent):void
{
Alert.show(event.fault.faultString, "Error !");
}
public function getUsers():void
{
usr.getOperation('getUser').send();
}
public function rempliCombo(evt:ResultEvent):void
{
usrs = new ArrayCollection(ArrayUtil.toArray(evt.result));
}
private function usrSelect(evt:Event):void
{
slct.text = "You select " + sel.selectedItem;
}
private function showPopUp():void
{
currentState = 'popUp';
}
protected function handleClose(event:MouseEvent):void
{
this.currentState="normal";
}
[Bindable]public var dateCollection:ArrayCollection;
private function dataprov(evt:ResultEvent):void
{
dateCollection = new ArrayCollection(ArrayUtil.toArray(evt.result));
vs.selectedChild = a1;
}
private function display(data:Object, field:String, index:Number, percentValue:Number):String
{
var temp:String= (" " + percentValue).substr(0,6);
return data.keyword + ": " + '\n' + "Ponderation: " + data.ponderation + '\n' + temp + "%";
}
private function next():void
{
if (vs.selectedChild == a2)
vs.selectedChild = a1;
else if(vs.selectedChild == a1)
vs.selectedChild = a2;
}
private function closed(e:MouseEvent):void
{
PopUpManager.removePopUp(e.currentTarget as IUIComponent);
}
private var info:TitleExample;
private var key:List = new List();
private function toto(e:MouseEvent):void
{
info =TitleExample(PopUpManager.createPopUp(
this, TitleExample , false) as spark.components.TitleWindow);
var tab:Array = new Array();
var u:LinkButton = new LinkButton();
var dele:LinkButton = new LinkButton();
info.removeAllElements();
key.dragEnabled = true;
dele.label="supprimer cette infos";
dele.y = info.height - u.height - 10;
dele.x = info.width - dele.width - 10;
u.label = "Se rendre sur le site source";
u.y = info.height - u.height - 10;
u.x = 10;
for (var i:int = 0; i < series1.selectedItems.length; i++)
{
tab[0] = "Mots clef : " + dateCollection.getItemAt(series1.selectedIndices[i]).keyword;
tab[1] = "Description : " + dateCollection.getItemAt(series1.selectedIndices[i]).descr;
tab[2] = "Date de parution : " + dateCollection.getItemAt(series1.selectedIndices[i]).date;
tab[3] = "Lien : " + dateCollection.getItemAt(series1.selectedIndices[i]).lien;
key.dataProvider = tab;
u.data = dateCollection.getItemAt(series1.selectedIndices[i]).lien;
}
info.addElement(key);
info.addElement(u);
info.addElement(dele);
u.addEventListener(MouseEvent.CLICK, show);
dele.addEventListener(MouseEvent.CLICK, deleteInfo);
}
private function deleteInfo(e:MouseEvent):void
{
PopUpManager.removePopUp(info);
}
private function show(e:MouseEvent):void
{
var u:URLRequest = new URLRequest(e.currentTarget.data);
navigateToURL(u,"_blank");
}
private function initApp():void
{
series1.addEventListener(MouseEvent.CLICK, toto);
}
/************************************************************/
public function onTreeDragEnter(event:DragEvent):void
{
event.preventDefault();
DragManager.acceptDragDrop(event.target as IUIComponent);
tree.showDropFeedback(event);
}
public function onTreeDragOver(event:DragEvent):void
{
event.preventDefault();
tree.showDropFeedback(event);
}
public function onTreeDragExit(event:DragEvent):void
{
event.preventDefault();
tree.hideDropFeedback(event);
}
public function onTreeDragDrop(event:DragEvent):void
{
event.preventDefault();
tree.hideDropFeedback(event);
var index:int = tree.calculateDropIndex(event);
var items:Array = new Array();
if(event.dragSource.hasFormat("treeItems"))
items = items.concat(event.dragSource.dataForFormat("treeItems") as Array);
if(event.dragSource.hasFormat("items"))
items = items.concat(event.dragSource.dataForFormat("items") as Array);
if(index > (tree.dataProvider as ICollectionView).length)
index = (tree.dataProvider as ICollectionView).length;
for each(var item:Object in items)
{
var obj:Object = new Object()
obj.label = "salut"; //chaine en dur pour le test
(tree.dataProvider as ArrayCollection).addItemAt(obj, index);
}
}
]]>
</fx:Script>
<fx:Declarations>
<mx:RemoteObject id="services" destination="amfphp" source="isAdmin">
<mx:method name="isAdmin"
result="isAdmin_true(event)"
fault="onFault(event)"/>
</mx:RemoteObject>
<mx:RemoteObject id="usr" destination="amfphp" source="getUser">
<mx:method name="getUser"
result="rempliCombo(event)"
fault="onFault(event)"/>
</mx:RemoteObject>
<mx:RemoteObject id="donnee" destination="amfphp" source="datap">
<mx:method name="datap"
result="dataprov(event)"
fault="onFault(event)"/>
</mx:RemoteObject>
<s:ArrayList id="arr2">
<!--<fx:String>Banana</fx:String>-->
</s:ArrayList>
<fx:Model id="listSample" source="sampledata/listsample.xml"/>
<fx:XMLList id="treeData">
<node label="Mail Box">
<node label="Inbox">
<node label="Marketing"/>
<node label="Product Management"/>
<node label="Personal"/>
</node>
<node label="Outbox">
<node label="Professional"/>
<node label="Personal"/>
</node>
<node label="Spam"/>
<node label="Sent"/>
</node>
</fx:XMLList>
</fx:Declarations>
<s:transitions>
<mx:Transition fromState="*" toState="*">
</mx:Transition>
</s:transitions>
<s:states>
<s:State name="normal" />
<s:State name="adm"/>
</s:states>
<s:BorderContainer id="reg"
backgroundColor="0x000000" color="0xFFFFFF" width="100%" height="100%" excludeFrom="adm">
<mx:HBox height="100%" width="100%" horizontalGap="0">
<components:CollapsibleAccordion id="collapsibleAccordion1"
height="100%"
orientation="right"
barSize="36"
openSize="300"
currentWidth="360"
drawerButtonStyle="drawerButton"
closeButtonStyle="drawerCloseRight"
accordianStyle="drawerAccordion">
<mx:Canvas width="100%" height="100%" label="Online" icon="@Embed(source='assets/email-48x48.png')">
</mx:Canvas>
</components:CollapsibleAccordion>
<mx:Panel title="Bienvenue" width="100%" height="100%" creationComplete="donnee.getOperation('datap').send();">
<mx:VBox paddingLeft="5" paddingTop="50" height="100%" width="100%">
<mx:HBox>
<s:RichText text="Bienvenue " />
<s:RichText id="returnName" text="" updateComplete="isAdmin();"/>
</mx:HBox>
<mx:ViewStack id="vs" width="100%" height="100%">
<s:NavigatorContent id="a1">
<mx:PieChart height="100%" width="100%" paddingRight="5" paddingLeft="5" color="0x323232"
showDataTips="true" dataProvider="{dateCollection}">
<mx:series>
<mx:PieSeries id="dyn" labelPosition="callout" field="ponderation" labelFunction="display">
<mx:calloutStroke>
<s:SolidColorStroke weight="0" color="0x888888" alpha="1.0"/>
</mx:calloutStroke>
<mx:radialStroke>
<s:SolidColorStroke weight="0" color="#FFFFFF" alpha="0.20"/>
</mx:radialStroke>
<mx:stroke>
<s:SolidColorStroke color="0" alpha="0.20" weight="2"/>
</mx:stroke>
</mx:PieSeries>
</mx:series>
</mx:PieChart>
</s:NavigatorContent>
<s:NavigatorContent id="a2">
<mx:ColumnChart id="column"
height="100%"
width="100%"
showDataTips="true"
dataProvider="{dateCollection}"
selectionMode="single"
creationComplete = "initApp()"
>
<mx:series>
<mx:ColumnSeries id="series1"
yField="ponderation"
displayName="Ponderation"
selectable="true"
/>
</mx:series>
<mx:horizontalAxis>
<mx:CategoryAxis categoryField="date"/>
</mx:horizontalAxis>
</mx:ColumnChart>
</s:NavigatorContent>
</mx:ViewStack>
<mx:Button icon="@Embed(source='assets/closeleft.png')" click="next()"/>
</mx:VBox>
</mx:Panel>
<components:CollapsibleAccordion id="collapsibleAccordion3"
height="100%"
orientation="left"
barSize="36"
currentWidth="36"
drawerButtonStyle="drawerButton"
closeButtonStyle="drawerCloseRight"
accordianStyle="drawerAccordion">
<mx:Canvas width="100%" height="100%" label="Dossier" icon="@Embed(source='assets/rss-48X48.png')">
<mx:VBox width="100%" height="100%">
<s:Panel id="garde" title="Je garde" color="0xffffff" borderAlpha="0.15" width="100%" height="50%">
<mx:List color="0x000000" width="100%" height="100%" dropEnabled="true" dragEnabled="true" dragMoveEnabled="true" />
</s:Panel>
<s:Panel id="del" title="Je jette" color="0xffffff" borderAlpha="0.15" width="100%" height="50%">
<mx:Tree id="tree" width="50%" labelField="@label" color="0x000000"
showRoot="false" dataProvider="{treeData}"
dragEnter="onTreeDragEnter(event)"
dragOver="onTreeDragOver(event)"
dragExit="onTreeDragExit(event)"
dragDrop="onTreeDragDrop(event)"
/>
</s:Panel>
</mx:VBox>
</mx:Canvas>
</components:CollapsibleAccordion>
</mx:HBox>
</s:BorderContainer>
<s:BorderContainer id="re" includeIn="adm"
backgroundColor="0x000000" color="0xFFFFFF" cornerRadius="7" width="1024" height="600" horizontalCenter="-43" verticalCenter="77">
<s:Label text="Bienvenue admin" paddingLeft="5" paddingTop="5"/>
<s:HGroup paddingTop="30" paddingLeft="5">
<s:Label text="Utilisateur a mettre a jour : "/>
<s:VGroup>
<s:ComboBox id="sel" dataProvider="{usrs}" width="150" color="0x000000" change="usrSelect(event)" selectedIndex="0"/>
<s:Label id="slct"/>
</s:VGroup>
</s:HGroup>
</s:BorderContainer>
</s:Application> |
