@Override
public void execute() {
// Ensure fIndex is stored just before execute because if this is part of a composite delete
// action
// then the index positions will have changed
fIndex = fFolder.getElements().indexOf(fElement);
if (fIndex != -1) { // might be already be deleted from Command in CompoundCommand
fFolder.getElements().remove(fElement);
}
}
@Override
public void redo() {
fParent.getFolders().add(fFolder);
// Select
UIRequestManager.INSTANCE.fireRequest(
new TreeSelectionRequest(this, new StructuredSelection(fFolder), true));
}
@Override
public void undo() {
fParent.getFolders().remove(fFolder);
// Select the parent node if no node is selected (this happens when the node is deleted)
TreeSelectionRequest request =
new TreeSelectionRequest(this, new StructuredSelection(fParent), true) {
@Override
public boolean shouldSelect(Viewer viewer) {
return viewer.getSelection().isEmpty();
}
};
UIRequestManager.INSTANCE.fireRequest(request);
}
@Override
public void undo() {
if (fIndex != -1) { // might be already be deleted from Command in CompoundCommand
fFolder.getElements().add(fIndex, fElement);
}
}