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Vaadin Forum3. Vaadin 6, 7, 8Framework UI

Enabling and disabling Drag and Drop "on the fly"

Heinz Müller
10 years ago Dec 30, 2011 10:22am

Hello everyone!

I've created an Layout for rearranging components similiar to this example: http://demo.vaadin.com/sampler#DragDropRearrangeComponents

Now I'm wondering if this could be disabled or enabled "on the fly", so i could lock this layout. Changing the DragStartMode of the com.vaadin.ui.DragAndDropWrapper did not change anything.

Has someone an idea?

Thanks in advance,
Heinz

Last updated on Dec, 30th 2011
Heinz Müller
10 years ago Jan 01, 2012 6:58am

Hello again and happy new year!

because maybe noone understood me I wrote a quick example (see the attached source file). Horizontal Drag & Dropping is enabled, but I want to toggle it. Sure, I could edit the AcceptCriterion, but that would mean, that the user is still able to start the process.

So I want to make something like a toolbar. If the user wants to edit the layout, he can do it. Once he's ready, he should be able to actually lock the layout.

Can anyone help me for this?

Thanks in advance,
Heinz

Last updated on Jan, 1st 2012
Heinz Müller
10 years ago Jan 01, 2012 5:04pm

So I figuered out, that changing the DragStartMode of each wrapper (which must first added to a list, to access them later), is a way to do this. If anyone has an better idea, please post it here.

Thanks,
Heinz

Jens Jansson
10 years ago Jan 02, 2012 6:53am

Looking at the API and examples, yeah, setting layout.setDragStartMode(DragStartMode.NONE); is the way I think it should be done.

Heinz Müller
10 years ago Jan 02, 2012 9:04am

Hello Jens,

thank you very much for your reply. Which layout do you mean? Either SortableLayout nor the HorizontalLayout do provide such a method, or am I wrong? It would be really nice to only change the layout instead of each wrapper.

Heinz

John Ahlroos
10 years ago Jan 02, 2012 4:11pm

It would be really nice to only change the layout instead of each wrapper

This is basically what the DragDropLayouts addon does.

Last updated on Jan, 2nd 2012
Jens Jansson
10 years ago Jan 03, 2012 8:45am

Yeah I was referring to the wrapper and not the layout :(

But check out the add-on mentioned (and created) by John. It might clean up your code.

Heinz Müller
10 years ago Jan 06, 2012 10:10am

Hello everyone!

Thanks for your reply. Sorry for my late response, but somehow I expected an email to inform me about an answer...

I will check this layout out, thanks a lot!

Heinz

SuBiN SoMaN
7 years ago Jan 27, 2015 11:21am

how can i manage DragStartMode on select purticular layout

Régis Faradji
5 years ago Apr 13, 2017 9:58am

I'm using Vaadin Framework : I've created a list of vertical layout where every vertical layout  is composed of : 1- An horizontal layout where there is a button and a label 2- An other list of vertical layout. These elements are hidden. I can do the drag and drop in mode vertical between the vertical layouts parent but when I press the button and I want to make drag and drop betweeen vertical layouts child, all the layout parent is dragged. So my solution is to find a way to disable drag and drop of the vertical layout parent when I press the button and enable drag and drop of the vertical layout child, but I don't find the way to do it. Is there someone who can help me please ? I created a kind of SortableLayout on which I do the drag and drop ...