Re: [flexcoders] Re: Detect if Object exists

[Nick Collins]

Hmm... well Scotty, interestingly enough, this train of thought isn't working... for some reason the condition is always returning true, even when no tabs at all have been created... back to the drawing board I guess.
On 7/20/06, Scotty Scott <[EMAIL PROTECTED]> wrote:













  


    
            Change
    var selectTab:Container = this.windowTabs.getChildByName(newid);to
    var selectTab:Container = Container(this.windowTabs.getChildByName(newid));Or
    var selectTab:Container = this.windowTabs.getChildByName(newid) as Container;Im not sure which syntax is the correct way or what the difference is.  Anyone care to explain the difference?Scotty

On 7/20/06, Nick Collins <
[EMAIL PROTECTED]> wrote:













  


    
            I tried something very similar to that, but got the following error, as I did this time:1118: Implicit coercion of a value with static type flash.display:DisplayObject to a possibly unrelated type mx.core:Container

.
On 7/20/06, fwscott <

[EMAIL PROTECTED]> wrote:













  


    
            Hey Nick,

You could assign a name to your tab and then use
this.windowTabs.getChildByName(newtab.name);


Something like

private function createTab(createTabName:String):void
  {
    var newid:String = 'userTab' +
this.masterList.selectedItem.ContribNum;
    var selectTab:Container = this.windowTabs.getChildByName(newid);
    if(!selectTab) {
                 var newVbox:VBox = new VBox();
                 var newHbox:HBox = new HBox();
                 var newTab:Canvas = new Canvas();
                 var newSpacer:Spacer = new Spacer();
                 var tabCloseBtn:Button = new Button();
 
                 // create button to close tab
                 tabCloseBtn.label = "Close Tab";
                 tabCloseBtn.addEventListener
(MouseEvent.CLICK,myClickListener);
 
                 // create spacer to position close button
                 newSpacer.percentWidth = 100;
 
                 // create box layout controls
                 newHbox.percentWidth = 100;
                 newHbox.addChild(newSpacer);
                 newHbox.addChild(tabCloseBtn);
                 newVbox.addChild(newHbox);
                 newVbox.addChild
(getTithesComponent(this.masterList.selectedItem.ContribNum));
 
                 // create tab
                 newTab.label = createTabName;
                 newTab.id = newid;
                 newTab.name = newid;
           
                 newTab.addChild(newVbox);
 
                 this.windowTabs.addChild(newTab);
                 this.windowTabs.selectedChild = newTab;
                 }
                      
     else
         this.windowTabs.selectedChild = selectTab;
   }

Scotty
http://www.franciswscott.com




--- In 
flexcoders@yahoogroups.com
, "Nick Collins" <[EMAIL PROTECTED]> wrote:

>
> I've got a datagrid with a list of people, that when you double click on
> one, it creates a new tab with that person's data into a
TabNavigator. I'm
> trying to get it so it will only open one instance of a tab for each
person,
> and if you try to open a person again, it will simply select their
tab that
> already exists. Sounds pretty straightforward, right?
> 
> Here's what I've got, when you click the button for their data or double
> click their name, an event is launched which then calls this function,
> createTab:
> 
> private function createTab(createTabName:String):void
>             {
>                 var newVbox:VBox = new VBox();
>                 var newHbox:HBox = new HBox();
>                 var newTab:Canvas = new Canvas();
>                 var newSpacer:Spacer = new Spacer();
>                 var tabCloseBtn:Button = new Button();
> 
>                 // create button to close tab
>                 tabCloseBtn.label = "Close Tab";
>                 tabCloseBtn.addEventListener (MouseEvent.CLICK,
> myClickListener);
> 
>                 // create spacer to position close button
>                 newSpacer.percentWidth = 100;
> 
>                 // create box layout controls
>                 newHbox.percentWidth = 100;
>                 newHbox.addChild(newSpacer);
>                 newHbox.addChild(tabCloseBtn);
>                 newVbox.addChild(newHbox);
>                 newVbox.addChild (getTithesComponent(
> this.masterList.selectedItem.ContribNum));
> 
>                 // create tab
>                 newTab.label = createTabName;
>                 newTab.id = 'userTab' +
> this.masterList.selectedItem.ContribNum ;
>                 newTab.addChild(newVbox);
> 
>                 var selectTab:ObjectName = newTab.id;
> 
>                 if (!selectTab) {
>                     this.windowTabs.selectedChild = selectTab;
>                 } else {
>                     this.windowTabs.addChild(newTab);
>                     this.windowTabs.selectedChild = newTab;
>                 }
> 
>             }
> 
> Now from the docs I've found, it seems like doing an if statement
with the
> condition of ! objectID should be checking if that id exists, right? for
> some reason it always returns false, even when a new canvas in the
> TabNavigator stack with that id value already exists.
> 
> Any ideas how I can accurately detect if the object exists?
>


      

    
    












      

    
    












      

    
    












__._,_.___





--
Flexcoders Mailing List
FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt
Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com








   



    


  
  
    SPONSORED LINKS
  
          
                  
            
        Web site design development
      
                      
        Computer software development
      
                      
        Software design and development
      
              
                        
            
        Macromedia flex
      
                      
        Software development best practice
      
                    
           
  







  
  
  YAHOO! GROUPS LINKS



   Visit your group "flexcoders" on the web. 
   To unsubscribe from this group, send an email to: [EMAIL PROTECTED] 
   Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.



  






__,_._,___