Alexander,
Thanks for your answer.
But I use the EventListener "contextmenu" to display my context menu in
the tree, I also use a function to create the customized menu with this
case code I don't know where place the "this.remove".
Please find attach a sample of my code.
--------------------------------------------
function initPopUpMenuAdd(app){
var cmenu = new qx.ui.menu.Menu;
var r_1 = new qx.ui.menu.Button(app.label.m_ppa_1,
"icon/add16.png", app._pmadd);
cmenu.add(r_1);
cmenu.addToDocument();
app.widgets['cmenu'] = cmenu;
return cmenu;
}
// show the context-menu
this.widgets['appTree'].addEventListener("contextmenu", function(e){
if (this.widgets['appTree'].getSelectedElement() instanceof
qx.ui.tree.TreeFile) {
this.widgets['appTree'].setContextMenu(initPopUpMenu(this,this.widgets['appTree'].getSelectedElement().getUserData("_val")));
}else {
this.widgets['appTree'].setContextMenu(initPopUpMenuAdd(this));
}
this.widgets['appTree'].getContextMenu().setLeft(e.getClientX());
this.widgets['appTree'].getContextMenu().setTop(e.getClientY());
this.widgets['appTree'].getContextMenu().setOpener(this);
this.widgets['appTree'].getContextMenu().show();
}, this);
Alexander Back a écrit :
> Hi,
>
> geo wrote:
>> Alexander.
>>
>> you're right I create the menu each time, the items of my trees are
>> customized. So each menu is different.
> Completely different? If not, you can create a pool of contextmenus and
> reuse them.
>
>> 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?
> You can remove every widget from the document by calling the "remove"
> method. This will also remove the connected DOM node from the document.
>
> --snip--
> this._contextmenu = new qx.ui.menu.Menu();
>
> // add - this refers to the application context
> this.add(this._contextmenu);
>
> // remove
> this.remove(this._contextmenu);
> --snip--
>
> cheers,
> Alex
>
>> 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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