Alexander.
you're right I create the menu each time, the items of my trees are
customized. So each menu is different.
Thanks for your help, but just one question is there a way to remove
each time the custom menu from the page when it disappear?
Thanks ...
Regards
Alexander Back a écrit :
> Hi,
>
> geo wrote:
>> Alexander,
>>
>> I noticed the problem in firebug (1.2.0) with Firefox 2.0.0.16 (cf.
>> qooxdoo.png).
>> Whenever I open a context menu, a new div appears on the page, but as
>> soon as the menu disappears this "div" is hidden (display: none) and it
>> does not removed.
> Yes, for every menu widget (a context menu is technically the same) a
> DIV element is created and is hidden whenever the menu disappears. Once
> the menu is opened again the same (already rendered) DIV element is used
> to let it re-appear. So the DIV element will stay inside the DOM for
> performance issues - it is faster to show a already menu than to
> re-create it over and over again.
>
>> Then when I open a new context menu a new div is created in the page.
>> The only difference between these div is the position left and top...
>> After 10 menu display we have 10 new div which arise and so on.
>>
>> In my application I have only one context menu on a tree view,
>> I even succeeded to display my menu 2 times in the same position, in
>> this case I have two div totally identical on the page.
> I wonder how you achieve this. The default behaviour of every menu
> widget is to reuse its DIV element.
>> I use qooxdoo 0.7.3 sdk.
>>
>> I hope this will help you else I can send you a copy of the code that I
>> use.
> Yepp, a little snippet of your code would help me to track down this
> problem. However, I guess you are creating your contextmenu every time
> somebody is right-clicking at your tree view, which will create a new
> menu instance (and a new DIV element) of course. So instead of creating
> every time a new one you have to reuse the already existing.
>
> --snip--
> // just a little example to show the reusing - don't know if it's
> working completely
>
> _contextmenu : null,
>
> _createTree : function(){
> myTreeView = new qx.ui.tree.Tree;
>
> // "this" refers to the application context
> myTreeView.addEventListener("contextmenu", this._showContextMenu, this);
> ...
> },
>
> _showContextMenu : function(e){
> // if the contextmenu is not created
> if (this._contextmenu == null)
> {
> this._contextmenu = new qx.ui.menu.Menu;
> // menu details
> }
>
> // position the contextmenu using the event coords
> this._contextmenu.setLeft(e.getScreenX() + 10);
> this._contextmenu.setTop(e.getScreenY() + 10);
>
> this._contextmenu.show();
> }
> --snip--
>
> Hope this helps,
> Alex
>
>> Thanks.
>>
>>
>> Alexander Back a écrit :
>>> Hi,
>>>
>>> geo wrote:
>>>> Hi,
>>>>
>>>> I found during using the contextual menu, that they are not deleted
>>>> from the page but just hidden.
>>>> Whenever you display a context menu that creates a new <div> in the
>>>> page.
>>>> Is there a way to avoid this?
>>> qooxdoo widgets are tied to their DOM nodes. In the case of the
>>> contextmenu the same DIV node is used, it is just hidden and displayed.
>>> Are you sure you talking about the same DIV as used for the contextmenu?
>>>
>>> cheers,
>>> Alex
>>>
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