protected Command computeCommand() {
MUIElement selectedPart = model;
if (selectedPart instanceof MPart) {
MGenericStack<MUIElement> partStack = findParentStack();
if (partStack != null) {
selectedPart = partStack;
}
}
MElementContainer<MUIElement> parent = partStack.getParent();
List<MUIElement> children = parent.getChildren();
int index = children.indexOf(partStack);
if (parent instanceof MGenericTile<?>) {
MGenericTile<?> genericTile = (MGenericTile<?>) parent;
int modelIndex = children.indexOf(selectedPart);
if (modelIndex == 0 && index == 1 && children.size() == 2 && genericTile.isHorizontal()) {
return UnexecutableCommand.INSTANCE;
}
}
CompoundCommand result = new CompoundCommand();
MPartSashContainer newSash = MBasicFactory.INSTANCE.createPartSashContainer();
String preferData = partStack.getContainerData();
newSash.setContainerData(preferData);
newSash.setHorizontal(true);
if (selectedPart instanceof MPartStack) {
if (selectedPart.getParent() == null) {
selectedPart.setContainerData(preferData);
result.add(CommandFactory.createAddChildCommand(newSash, selectedPart, 0));
} else {
result.add(new ChangeParentCommand(newSash, selectedPart, 0));
if (!preferData.equals(selectedPart.getContainerData())) {
result.add(
new ApplyAttributeSettingCommand(
(EObject) selectedPart, "containerData", preferData));
}
}
} else if (selectedPart instanceof MPart) {
MPart part = (MPart) selectedPart;
MPartStack createPartStack = MBasicFactory.INSTANCE.createPartStack();
createPartStack.setContainerData(preferData);
if (part.getParent() != null) {
result.add(new ChangeParentCommand(createPartStack, part, 0));
} else {
result.add(CommandFactory.createAddChildCommand(createPartStack, part, 0));
}
result.add(CommandFactory.createAddChildCommand(newSash, createPartStack, 0));
}
result.add(new ChangeParentCommand(newSash, partStack, 1));
result.add(CommandFactory.createAddChildCommand(parent, newSash, index));
return result.unwrap();
}
@Override
public void detach(MPartSashContainerElement element, int x, int y, int width, int height) {
// If we're showing through a placehoilder then detach it...
if (element.getCurSharedRef() != null) {
element = element.getCurSharedRef();
}
// Determine the correct parent for the new window
MWindow window = getTopLevelWindowFor(element);
MPerspective thePersp = getPerspectiveFor(element);
MTrimmedWindow newWindow = MBasicFactory.INSTANCE.createTrimmedWindow();
newWindow.setX(x);
newWindow.setY(y);
newWindow.setWidth(width);
newWindow.setHeight(height);
element.getParent().getChildren().remove(element);
MWindowElement uiRoot = wrapElementForWindow(element);
newWindow.getChildren().add(uiRoot);
if (thePersp != null) {
thePersp.getWindows().add(newWindow);
} else if (window != null) {
window.getWindows().add(newWindow);
}
}
/**
* Wraps an element in a PartStack if it's a MPart or an MPlaceholder that references an MPart
*
* @param element The element to be wrapped
* @return The wrapper for the given element
*/
private MWindowElement wrapElementForWindow(MPartSashContainerElement element) {
if (element instanceof MPlaceholder) {
MUIElement ref = ((MPlaceholder) element).getRef();
if (ref instanceof MPart) {
MPartStack newPS = MBasicFactory.INSTANCE.createPartStack();
newPS.getChildren().add((MPlaceholder) element);
return newPS;
}
} else if (element instanceof MPart) {
MPartStack newPS = MBasicFactory.INSTANCE.createPartStack();
newPS.getChildren().add((MPart) element);
return newPS;
} else if (element instanceof MWindowElement) {
return (MWindowElement) element;
}
return null;
}