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Send a Drag and Drop between 2 node (from a Tree) [message #1774178]

Wed, 11 October 2017 10:21

Antoine Omnès

Messages: 11
Registered: September 2017

Junior Member

Hi everyone,

I would like to know if it is possible to use a drag and drop to drop an object between to node (from a Tree)?

And if it is possible, could you put an example here.

+ Item
--- drop here ---
+ Item

Thanks,
Antoine

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Re: Send a Drag and Drop between 2 node (from a Tree) [message #1774186 is a reply to message #1774178]

Wed, 11 October 2017 12:44

Patrick Tasse

Messages: 82
Registered: July 2009

Member

Hi Antoine,

Yes, you should be able to drag and drop almost any SWTBot widget onto another, for example:

SWTBotTreeItem source = ...
SWTBotTreeItem target = ...
source.dragAndDrop(target);

It currently does not support changing the drop operation (copy, move, link), or setting the xy-coordinates (it drags from center of source and drops to center of target).

Of course your SWT application must have implemented DND support first, either directly or through an extension point (for example in a CommonNavigator).

Adding Drag and Drop to an SWT Application

Navigator Content - dropAssistant

Patrick

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Re: Send a Drag and Drop between 2 node (from a Tree) [message #1774190 is a reply to message #1774186]

Wed, 11 October 2017 13:19

Antoine Omnès

Messages: 11
Registered: September 2017

Junior Member

Hi Patrick,

Thank you for you response.

Yes, I have already DnD in my application.

I would like to do that.

And for now I know only how to do that...

With:
SWTBotTreeItem source = ...
SWTBotTreeItem target = ...
source.dragAndDrop(target);

Antoine

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Re: Send a Drag and Drop between 2 node (from a Tree) [message #1774194 is a reply to message #1774190]

Wed, 11 October 2017 13:54

Patrick Tasse

Messages: 82
Registered: July 2009

Member

Oh, sorry, I misunderstood your question... I thought you were suggesting the location where I should drop my source code example ;)

My guess is that the functionality to 'insert' a dropped tree item is something that is implemented in the application based on the xy-coordinates of the DND events.

This would probably require a new method in AbstractSWTBot where the user could provide the specific xy-coordinates to be used.

If such a method is added, it should probably include parameters for the source coordinates (relative to its parent), the target coordinates (relative to display) and the drop operation.

If you would like to contribute a patch for this, we can review it and consider it for the next release.

Patrick

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