/*
* Carrot2 project.
*
* Copyright (C) 2002-2014, Dawid Weiss, Stanisław Osiński.
* All rights reserved.
*
* Refer to the full license file "carrot2.LICENSE"
* in the root folder of the repository checkout or at:
* http://www.carrot2.org/carrot2.LICENSE
*/
package org.carrot2.workbench.core.ui;
import org.carrot2.core.ProcessingResult;
import org.carrot2.workbench.core.helpers.ActionDelegateProxy;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.part.Page;
/**
* A single page internally bound to a concrete editor.
*/
final class ClusterTreeViewPage extends Page
{
private final SearchEditor editor;
/*
* Sync with search result updated event.
*/
private final SearchResultListenerAdapter editorSyncListener =
new SearchResultListenerAdapter()
{
public void processingResultUpdated(ProcessingResult result)
{
showProcessingResult();
}
};
/*
*
*/
private ClusterTree clusterTree;
/*
*
*/
public ClusterTreeViewPage(SearchEditor editor)
{
this.editor = editor;
}
/*
*
*/
@Override
public void createControl(Composite parent)
{
clusterTree = new ClusterTree(parent, SWT.NONE);
// Create toolbar.
final IActionBars bars = getSite().getActionBars();
final IToolBarManager toolBarManager = bars.getToolBarManager();
toolBarManager.add(new ActionDelegateProxy(
new ClusterTreeExpanderAction(
ClusterTreeExpanderAction.CollapseAction.EXPAND,
clusterTree, editor.getSearchResult()),
IAction.AS_PUSH_BUTTON));
toolBarManager.add(new ActionDelegateProxy(
new ClusterTreeExpanderAction(
ClusterTreeExpanderAction.CollapseAction.COLLAPSE,
clusterTree, editor.getSearchResult()),
IAction.AS_PUSH_BUTTON));
bars.updateActionBars();
// Register listeners
registerListeners();
// Display the current content.
showProcessingResult();
// Link bidirectional selection synchronization.
final SearchEditorSelectionProvider selectionProvider =
(SearchEditorSelectionProvider) editor.getSite().getSelectionProvider();
new ClusterTreeSelectionAdapter(
selectionProvider, clusterTree);
clusterTree.setSelection(selectionProvider.getSelection());
}
/*
*
*/
@Override
public Control getControl()
{
return clusterTree;
}
/*
*
*/
@Override
public void setFocus()
{
clusterTree.setFocus();
}
/*
*
*/
@Override
public void dispose()
{
unregisterListeners();
clusterTree.dispose();
super.dispose();
}
/**
* Display current processing result associated with our editor.
*/
private void showProcessingResult()
{
final ProcessingResult current = this.editor.getSearchResult()
.getProcessingResult();
if (current != null)
{
clusterTree.show(current);
}
else
{
clusterTree.clear();
}
}
/*
*
*/
private void registerListeners()
{
/* Update after each change of {@link ProcessingResult} */
editor.getSearchResult().addListener(editorSyncListener);
}
/*
*
*/
private void unregisterListeners()
{
editor.getSearchResult().removeListener(editorSyncListener);
}
}