/**
* Posts the update code "behind" the running operation.
*
* @param runnable the update code
*/
protected void update(Runnable runnable) {
if (runnable instanceof SafeChange) {
fireElementStateChanging(fileEditorInput);
}
IWorkbench workbench = PlatformUI.getWorkbench();
IWorkbenchWindow[] windows = workbench.getWorkbenchWindows();
if (windows != null && windows.length > 0) {
Display display = windows[0].getShell().getDisplay();
display.asyncExec(runnable);
} else {
runnable.run();
}
}
/*
* Method that can be called from the UI thread to update the view model.
*/
private void internalRunViewUpdate(final Runnable runnable, boolean preserveExpansion) {
StructuredViewer viewer = getViewer();
IResource[] expanded = null;
IResource[] selected = null;
try {
if (Utils.canUpdateViewer(viewer)) {
viewer.getControl().setRedraw(false);
if (preserveExpansion) {
expanded = provider.getExpandedResources();
selected = provider.getSelectedResources();
}
if (viewer instanceof AbstractTreeViewer && additionsMap == null)
additionsMap = new HashMap();
}
runnable.run();
} finally {
if (Utils.canUpdateViewer(viewer)) {
try {
if (additionsMap != null && !additionsMap.isEmpty() && Utils.canUpdateViewer(viewer)) {
for (Iterator iter = additionsMap.keySet().iterator(); iter.hasNext(); ) {
ISynchronizeModelElement parent = (ISynchronizeModelElement) iter.next();
if (Policy.DEBUG_SYNC_MODELS) {
System.out.println("Adding child view items of " + parent.getName()); // $NON-NLS-1$
}
Set toAdd = (Set) additionsMap.get(parent);
((AbstractTreeViewer) viewer).add(parent, toAdd.toArray(new Object[toAdd.size()]));
}
additionsMap = null;
}
if (expanded != null) {
provider.expandResources(expanded);
}
if (selected != null) {
provider.selectResources(selected);
}
} finally {
viewer.getControl().setRedraw(true);
}
}
}
ISynchronizeModelElement root = provider.getModelRoot();
if (root instanceof SynchronizeModelElement) ((SynchronizeModelElement) root).fireChanges();
}