Close a Callout inside a View in Flex - apache-flex

I have this ViewNavigator inside a callout and the callout displays a view inside it using firstView="views.ListMenusHomeView" . Now how can I close the callout from ListMenusHomeView? Hope someone can help.
Here is my code for the callout:
<?xml version="1.0" encoding="utf-8"?>
<s:Callout xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
contentBackgroundAppearance="none"
height="300" width="300">
<fx:Declarations>
<fx:XML id="menu" source="xmldata/menu2.xml" />
</fx:Declarations>
<fx:Script>
<![CDATA[
import spark.events.PopUpEvent;
protected function back(event:MouseEvent):void {
if(viewNav.length>1)
viewNav.popView();
}
]]>
</fx:Script>
<s:ViewNavigator id="viewNav" width="100%" height="100%" firstView="views.ListMenusHomeView">
<s:navigationContent>
<s:Button label="Back" click="back(event)"/>
</s:navigationContent>
<s:actionContent>
<s:Button label="Cancel" click="close(false)" emphasized="true"/>
</s:actionContent>
</s:ViewNavigator>
</s:Callout>
You see that there is a ViewNavigator which holds the ListMenusHomeView. This is the code for the ListMenusHomeView.
<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" title="Main Menu" creationComplete="onCreationComplete()">
<fx:Declarations>
<fx:XML id="menu" source="xmldata/menu2.xml" />
</fx:Declarations>
<fx:Script>
<![CDATA[
import com.adobe.serializers.xml.XMLDecoder;
import mx.collections.ArrayCollection;
import spark.events.IndexChangeEvent;
[Bindable]
private var dataArray:ArrayCollection = new ArrayCollection();
private var object:DataArray = new DataArray();
private function onCreationComplete() : void{
var decoder:XMLDecoder = new XMLDecoder();
var resultObj:Object = decoder.decode(menu);
dataArray = object.onCreationComplete(menu, menu.menuitem, resultObj, resultObj.menuitem);
}
protected function list1_changeHandler(event:IndexChangeEvent):void
{
}
]]>
</fx:Script>
<s:List id="tileLayout"
width="100%" height="100%"
verticalScrollPolicy="off" horizontalScrollPolicy="on"
pageScrollingEnabled="true" dataProvider="{dataArray}"
itemRenderer="renderers.iconList2" change="list1_changeHandler(event)">
<s:layout>
<s:TileLayout orientation="columns" requestedRowCount="3"
verticalGap="20" horizontalGap="20"/>
</s:layout>
</s:List>
Now I want to close MyCallout whenever I click an icon inside ListMenusHomeView. The function list1_changeHandler(event:IndexChangeEvent) is responsible for that one.
What should I do?

The Callout class has a close() method, so you basically just need to access the ListMenusHomeViews parentDocument (which would be your "viewNav" ViewNavigator) and its parentDocument, which should be your ListMenusHomeView.
I haven't tested it but you might fiddle around with the parentDocument, parent and owner properties to access the correct object. Try them with a simple trace and you'll be up and running in no time.

Related

How to access MXML component instance in ItemRenderer

I have been developing an Adobe Flex (v3.5 Flex SDK) based application and I have a question on How we can access (call) a method written in MXML file (embeded in script tag) from the ItemRenderer file.
The MXML component has a datagrid and for one of the columns, the itemrenderer is my own custom item renderer.
In my custom item renderer, for some event I need to call a method which exist in its parent MXML component. How do we get access to its parent MXML instance ?
I have explored for this in google and found that we can access to 'data' object which refers to the dataProvider of the datagrid. But I wanted access to the instance of MXML component (so that I can call a method in it) which has the datagrid.
The AdvancedDataGridColumn in AdvancedDataGrid is like this
<mx:AdvancedDataGridColumn dataField="total" headerText="Total" width="120" itemRenderer="renderers.MyItemRenderer"/>
Here MyItemRenderer is a separate action script file.
Appreciate the response.
Thanks
Raagu
As Raghavendra Nilekani suggested This works:
TestGrid.mxml
<?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" minWidth="955" minHeight="600">
<fx:Script>
<![CDATA[
[Bindable]
public var data:Array = [
{name:"name",value:"valeu1",timestamp:"423423"},
{name:"name1",value:"valeu2",timestamp:"423423"},
{name:"name2",value:"valeu3",timestamp:"423423"},
{name:"name3",value:"valeu5",timestamp:"423423"}
]
public function calculateValue():Number{
return Math.random();
}
]]>
</fx:Script>
<fx:Declarations>
</fx:Declarations>
<mx:VBox height="100%" width="100%">
<mx:AdvancedDataGrid dataProvider="{data}">
<mx:columns>
<mx:AdvancedDataGridColumn itemRenderer="ItemRenderer">
</mx:AdvancedDataGridColumn>
</mx:columns>
</mx:AdvancedDataGrid>
</mx:VBox>
</s:Application>
e ItemRendere.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:MXAdvancedDataGridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
focusEnabled="true"
addedToStage="mxadvanceddatagriditemrenderer1_addedToStageHandler(event)"
>
<fx:Script>
<![CDATA[
[Bindable]
var value:Number;
import mx.containers.VBox;
import mx.controls.AdvancedDataGrid;
protected function mxadvanceddatagriditemrenderer1_addedToStageHandler(event:Event):void
{
var grid:AdvancedDataGrid = ((AdvancedDataGrid)(this.owner));
var box:VBox = ((VBox)(grid.owner))
var comp:TestGrid = (TestGrid)(box.owner);
value = comp.calculateValue();
}
]]>
</fx:Script>
<s:Label id="lblData" top="0" left="0" right="0" bottom="0" text="{value}" />
</s:MXAdvancedDataGridItemRenderer>
Anyway I agree with zenbeni that this lead to a not reausable item renderer.

Flex - HTTPRequest to output html source in TextArea

I have a TextArea and I'm trying to use HTTPRequest to fetch a website and output the html source
in the TextArea but nothing is happening.
<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:ns1="*"
actionBarVisible="true" currentState="landscape" tabBarVisible="false"
overlayControls.landscape="false"
tabBarVisible.landscape="false"
actionBarVisible.portrait="true" viewActivate="view1_viewActivateHandler(event)">
<fx:Declarations>
<s:HTTPService id="service" resultFormat="e4x"/>
</fx:Declarations>
<s:TextArea id="mainTextField" text="{service.lastResult}"/>
<fx:Script>
<![CDATA[
import spark.events.ViewNavigatorEvent;
protected function view1_viewActivateHandler(event:ViewNavigatorEvent):void
{
service.url = "http://www.google.com";
}
]]>
</fx:Script>
<s:actionContent>
</s:actionContent>
<s:titleContent>
</s:titleContent>
</s:View>
You should call service.send() to send request.

load image from filesystem in flex

i have the following:
<s:Image source="{path}/imageName"/>
how can i determine that path to load the image from filesystem lets say from
C:\Users\sstauross\Desktop ??
Edit : If you want to select a specific path, the user will have to confirm the path himself first using the FileSystemList
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<fx:Script>
<![CDATA[
import mx.events.FlexEvent;
private var userPath:String;
protected function button_clickHandler(event:MouseEvent):void
{
userPath = fsList.selectedPath;
}
]]>
</fx:Script>
<s:layout>
<s:VerticalLayout/>
</s:layout>
<mx:FileSystemList id="fsList"/>
<s:Label text="{fsList.selectedPath}"/>
<s:Button label="Confirm folder selection" click="button_clickHandler(event)"/>
</s:WindowedApplication>
Here's one way to do it
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="creationCompleteHandler(event)">
<fx:Script>
<![CDATA[
import mx.events.FlexEvent;
[Bindable]
private var desktopPath:String;
protected function creationCompleteHandler(event:FlexEvent):void
{
desktopPath = File.desktopDirectory.nativePath.toString();
}
]]>
</fx:Script>
<mx:Image source="{desktopPath}/myFile.jpg"/>
</s:WindowedApplication>
The answer to what i was looking was very simple because i put
<s:Image source="C:\Users\sstauross\Desktop\imageName"/>
instead of
<s:Image source="C:/Users/sstauross/Desktop/imageName"/>
notice the "\" instead of "/"...
Thanks a lot for your answers!

Adobe Flex 4.5 Spark: Binding ItemRenderer Component to Parent

In Flex 3, it used to be possible to bind a component property within an itemRenderer via outerDocument. So for instance, if there was a image inside an itemRenderer that was only displayed on a given condition of the parent, something like this would work perfectly:
<mx:itemRenderer>
<mx:Component>
<mx:Label text="{data}"/>
<mx:Image id="img" visible="{outerDocument.ShowImage}" includeInLayout="{outerDocument.ShowImage}"/>
</mx:Component>
</mx:itemRenderer>
where the outer document (not the list, but the mxml the list is in) contained something like
[Bindable]
public function get ShowImage():void
{
return showImage;
}
public function set ShowImage(val:Boolean):void
{
showImage = val;
}
I've tried to do the same thing in Flex 4.5 using Spark item renderers using parentDocument, but it doesn't seem to be aware to the binding. When I do this in Flex 4.5, the itemRenderer doesn't seem to be aware when the parentDocument ShowImage changes.
Has anyone seen this issue and is able to offer a solution?
EDIT: Add Spark Source
As requested here is my spark source:
MyItemRenderer.mxml
<s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<s:Label id="myLabel" text="{data}/>
<s:Image src="something.png" visible="{parentDocument.ShowImage}" includeInLayout="{parentDocument.ShowImage}"/>
</s:ItemRenderer>
RendererContainer.mxml
<s:Panel xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<fx:Script>
<![CDATA[
private var showImage:Boolean = false;
[Bindable]
public function set ShowImage(val:Boolean):void
{
showImage = val;
}
public function get ShowImage():Boolean
{
return showImage;
}
]]>
</fx:Script>
<!-- Content Group -->
<s:List id="lstCell" width="100%" height="100%" itemRenderer="MyItemRenderer">
</s:List>
</s:Panel>
Ok so there is a checkbox in a wrapper outside of RendererContainer.mxml that dispatches a custom event that is handled by changing a Bindable Boolean. The change in that var then changes the ShowImage property on my RendererContainer component. I would expect that the binding would then be picked up by MyItemRenderer but it doesnt seem to be working.
So my outer wrapper would access ShowImage like this
<comp:RendererContainer id="myId" ShowImage="{myCheckbox.selected}"/>
I think this should do the trick for you, YourTypeHere would be the class of the containing
object, make sure the ShowImage property is public and bindable.
<mx:itemRenderer>
<mx:Component>
<mx:Script>
<![CDATA[
import YourTypeHere;
]]>
</mx:Script>
<mx:Label text="{data}"/>
<mx:Image id="img"
visible="{YourTypeHere(this.parent.ShowImage)}"
includeInLayout="{YourTypeHere(this.parent.ShowImage)}"/>
</mx:Component>
</mx:itemRenderer>
P.s. please don't name properties with a starting uppercase letter, including getters, consider naming it showImage and your private var to something like _showImage instead :D
Your getter seems to have return type as void. Change that to Boolean
[Bindable]
public function get ShowImage():Boolean
{
return showImage;
}
public function set ShowImage(val:Boolean):void
{
showImage = val;
}
This will help.
<s:Image src="something.png" visible="{RendererContainer(ListSkin(parentDocument).parentDocument).ShowImage}" includeInLayout="{RendererContainer(ListSkin(parentDocument).parentDocument).ShowImage}"/>
Following works perfectly fine:
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<s:layout>
<s:VerticalLayout/>
</s:layout>
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
]]>
</fx:Script>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:Panel xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<s:layout>
<s:VerticalLayout/>
</s:layout>
<fx:Script>
<![CDATA[
private var showImage:Boolean = false;
[Bindable]
public function set ShowImage(val:Boolean):void
{
showImage = val;
}
public function get ShowImage():Boolean
{
return showImage;
}
]]>
</fx:Script>
<s:CheckBox label="Select" change="{ShowImage = !ShowImage}"/>
<!-- Content Group -->
<s:List id="lstCell" width="100%" height="100%" dataProvider="{new ArrayCollection(['A','B'])}">
<s:itemRenderer>
<fx:Component>
<s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
autoDrawBackground="true">
<s:layout>
<s:HorizontalLayout/>
</s:layout>
<s:Label id="myLabel" text="{data}"/>
<s:Button label="something.png" visible="{outerDocument.ShowImage}" includeInLayout="{outerDocument.ShowImage}"/>
</s:ItemRenderer>
</fx:Component>
</s:itemRenderer>
</s:List>
</s:Panel>
</s:WindowedApplication>

How do you choose the initial view for a flex application?

I want to load an initial component to be displayed in my flex app, depending on whether a value in the SharedObject is set (first launch). How do I accomplish that?
Easy enough:
<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"
applicationComplete="onApplicationComplete()">
<fx:Script>
<![CDATA[
private function onApplicationComplete():void
{
var so:SharedObject = SharedObject.getLocal('something');
// add conditionals here
addElement(new SomeView());
}
]]>
</fx:Script>
</s:Application>
Or with States:
<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"
applicationComplete="onApplicationComplete()">
<fx:Script>
<![CDATA[
private function onApplicationComplete():void
{
var so:SharedObject = SharedObject.getLocal('something');
// add conditionals here
this.currentState = 'someview2';
}
]]>
</fx:Script>
<s:states>
</s:State name="someview" />
</s:State name="someview2" />
</s:State name="someview3" />
</s:states>
<local:SomeView includeIn="someview" width="100%" height="100%" />
<local:SomeView2 includeIn="someview2" width="100%" height="100%" />
<local:SomeView3 includeIn="someview3" width="100%" height="100%" />
</s:Application>

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