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Customize EMF Compare Toolbar [message #1738195]

Mon, 18 July 2016 01:33

Eclipse User

Hi everyone,
We are looking into customizing EMF Compare dialog.
Q1:
Can we remove buttons in the toolbar e.g the merge icons/merging from left to right ? If yes how ?
Q2:
Is it possible to inject new buttons in the toolbar ?
Q3:
How can we implement undo and redo actions ? For example, if I provide this actions on a button in the toolbar ?

Re: Customize EMF Compare Toolbar [message #1738353 is a reply to message #1738195]

Tue, 19 July 2016 04:57

Eclipse User

Q1:
No, these buttons are contributed by default and there is no way to rmove them. There are no plans to make them removeable.

Q2:
The toolbar picks up menu contributions for "toolbar:org.eclipse.emf.compare.structuremergeviewer.toolbar" so you can just inject buttons through the usual eclipse extension points.

Q3:
undo and redo are already implemented and available through the usual ctrl+z (undo) and ctrl+y (redo).

Laurent Goubet
Obeo

Re: Customize EMF Compare Toolbar [message #1738358 is a reply to message #1738353]

Tue, 19 July 2016 05:21

Eclipse User

Thanks for your valuable response.

Q1.
For my customization, I want to remove some button. So is it not possible even if I extend EMFStructureMergeViewer and create a new toolbar and implement same as yours.

Q3.
I know it's implemented but I want to give it through some button for my use case. So I just wanted to know where is its functionality in which class ?

Thanks again.

Re: Customize EMF Compare Toolbar [message #1738482 is a reply to message #1738358]

Wed, 20 July 2016 05:30

Eclipse User

Hi,

The EMFCompareStructureMergeViewer hasn't been implemented with extension capabilities in mind, so you'll likely have quite a hard time overriding it. For example, its toolbar isn't easily replaceable since it's created right at instantiation time and is registered as a listener against the event bus we use internally. You could prevent the addition of the merge buttons by making both models uneditable (through the EMFCompareConfiguration) if that can work for you.

UndoAction and RedoAction in the org.eclipse.emf.compare.ide.ui.internal.contentmergeviewer.util package. This simply goes through our ICompareCommand stack to un/redo the last action. You can access that through the compare configuration (

getCompareConfiguration().getEditingDomain().getCommmandStack()

).

Laurent Goubet
Obeo

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