[1.2.3] Can't constrain window with container

[The_Jackal]

Hi,

The following code won't constrain a window within a container.
I have seen examples using ExtJS, so either my code is wrong, there's a bug, or GXT can't do this yet.

If there is another way to do this, please guide me in the right direction.



public void onModuleLoad()
{
ContentPanel center = new ContentPanel();
center.add(new Html("Center"));
center.setSize(400, 400);

ContentPanel west = new ContentPanel();
west.add(new Html("West"));
west.setSize(100, 400);

HorizontalPanel main = new HorizontalPanel();
main.add(west);
main.add(center);

Window w = new Window();
w.setSize(200, 200);
w.setConstrain(true);
w.setContainer(center.getElement());
w.show();
}
Regards,
The Jackal

[sven]

The container is only for maximazing the window. Not for dragging.

[The_Jackal]

Hi,

I've see this done in ExtJS - for example in Saki's http://examples.extjs.eu

The panel/window -> Simple Window/Panel auto load example the window is limited to the center panel (see pic).

Can this be done in GXT?

Regards,
Carl.

[sven]

EXTJs is not exactly the same than GXT. I move this into the help forum.

[sven]

I look into adding this for the GXT2.0 release.

[The_Jackal]

Thanks Sven.

[takayser]

+1

[francescoNemesi]

I do this already with GXT 1.2.3 with the following code



Draggable draggable = getDraggable();
draggable.setContainer(container);


where container is the Component that you want to use as container.

Hope this helps

[sven]

Yes draggable already has this.

[The_Jackal]

Well those hints have a mostly working solution - I can constrain the title of the window (it's "draggable") to a container... which effectively means a window is contained in a center panel in every direction but south.

The code I used is


private class ConstrainedWindow extends Window {
private Container constrainContainer = null;
public void setConstrainContainer(Container<Component> constrainContainer)
{
this.constrainContainer = constrainContainer;
}

@Override
protected void afterRender()
{
super.afterRender();
Draggable d = getDraggable();
d.setContainer(constrainContainer);
}
};

Usage:



ConstrainedWindow w = new ConstrainedWindow();
w.setConstrainContainer(myContainer);

[takayser]

:D Cool, works great. Thank you!

...but as it is still a workaround, I hope this is on the todo list for GXT 2.0! :">

[The_Jackal]

There is a better way that works in all directions.

Notes:
- The window may open outside the container so you need to control the opening position.
- The window position is relative to the browser
E.g. if you collapse a west panel and there are windows in a center panel then the windows won't move and can be rendered out of the constraining container

Sven - I think this should be how the window's draggable should be in the code base (rather than just the window's title bar) - your thoughts?





private class ConstrainedWindow extends Window {
private Container constrainContainer = null;
ConstrainedWindow(Container<Component> constrainContainer)
{
this.constrainContainer = constrainContainer;
}

@Override
protected void afterRender()
{
super.afterRender();
// Disable existing draggable adding one for whole window using existing handle
getDraggable().setEnabled(false);
Draggable d = new Draggable(this, getDraggable().getDragHandle());
d.setContainer(constrainContainer);
}
};Usage:


ConstrainedWindow w = new ConstrainedWindow(constrainContainer);

[sjzaluk]

Has this been implemented in 2.0 M1? I can't seem to get it to work yet without this workaround. I thought Window.setConstrain(true) would do it but it's still not working for me.

Thanks,
Steve

[xalvaro]

+1
:-?
in 2.0 ?

Especially for the Desktop in order to have the taskbar always on top

[ApacheLogs]

i have a problem in migration to 3.0
i have occured many problems in migration to 3.0.there's any one who have migrate desktop whith success ??

[mystix]

i have a problem in migration to 3.0
i have occured many problems in migration to 3.0.there's any one who have migrate desktop whith success ??

fyi, this is the GXT forum.