Ok, I found a solution myself.
The thing is, that the view is not a part of the e4 UI-Tree. view.eContainer is directly the MWindow. To be placed at the right spot the view is connected to the MPlaceholder, that is a part of the e4 UI-Tree and has getParent() != null.
In order to resize a view the steps are:
- Show view
- Find
MPlaceholder of the view
- Find
MPartStack and `MPartSashContainer´ object
- Set
containerData
- Redraw widget (yes, auto-update seam not to work in this case)
Example:
EModelService modelService = PlatformUI.getWorkbench().getService(EModelService.class);
EPartService partService = PlatformUI.getWorkbench().getService(EPartService.class);
// Show view
IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
page.showView(MyView.ID, null, IWorkbenchPage.VIEW_ACTIVATE);
MPart view = partService.findPart(MyView.ID);
// view.getParent() => null, because 'view' is not a part of the e4 UI-model!
// It is connected to the Model using MPlaceholder
// Let's find the placeholder
MWindow window = (MWindow)(((EObject)eView).eContainer);
MPlaceholder placeholder = modelService.findPlaceholderFor(window, view);
MUIElement element = placeholder;
MPartStack partStack = null;
while (element != null) {
// This may not suite your configuration of views/stacks/sashes
if (element instanceof MPartStack && ((Object)element.parent) instanceof MPartSashContainer) {
partStack = (MPartStack)element;
break;
}
element = element.parent;
}
}
if (partStack == null) { /* handle error */ }
// Now let's change the width weights
for (MUIElement element : partStack.getParent().getChildren()) {
if (element == partStack) {
element.setContainerData("50"); // Width for my view
} else {
element.setContainerData("25"); // Widths for other views & editors
}
}
// Surprisingly I had to redraw tho UI manually
// There is for sure a better way to do it. Here is my (quick & very dirty):
partStack.toBeRendered = false
partStack.toBeRendered = true
