/*******************************************************************************
* Copyright (c) 2007, 2010 Association for Decentralized Information Management
* in Industry THTH ry.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* VTT Technical Research Centre of Finland - initial API and implementation
*******************************************************************************/
package org.simantics.browsing.ui.swt;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.viewers.IPostSelectionProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.simantics.Simantics;
import org.simantics.browsing.ui.GraphExplorer;
import org.simantics.browsing.ui.NodeContext;
import org.simantics.browsing.ui.model.queries.IsNodeContextModifiable;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.management.ISessionContext;
import org.simantics.db.management.ISessionContextProvider;
import org.simantics.ui.workbench.action.ChooseActionRequest;
import org.simantics.utils.datastructures.Function;
import org.simantics.utils.ui.ISelectionUtils;
import org.simantics.utils.ui.workbench.WorkbenchUtils;
/**
* The default keyboard handler for {@link GraphExplorer}.
*
*
* Carriage return presses are handled similarly to mouse double clicks. F2
* initiates in-line editing of the selection when possible.
*
*
* @author Tuukka Lehtonen
*/
public class DefaultKeyListener extends KeyAdapter {
private final ISessionContextProvider contextProvider;
private final GraphExplorer explorer;
private final Function editingColumnResolver;
/**
* @param contextProvider
* @param explorer
* @param editingColumnResolver
*/
public DefaultKeyListener(ISessionContextProvider contextProvider, GraphExplorer explorer, Function editingColumnResolver) {
assert contextProvider != null;
assert explorer != null;
assert editingColumnResolver != null;
this.contextProvider = contextProvider;
this.explorer = explorer;
this.editingColumnResolver = editingColumnResolver;
}
@Override
public void keyPressed(KeyEvent e) {
if (e.keyCode == SWT.CR || e.keyCode == SWT.KEYPAD_CR) {
if (explorer.isDisposed())
return;
ISessionContext sessionContext = contextProvider.getSessionContext();
if (sessionContext == null)
return;
IPostSelectionProvider selectionProvider = (IPostSelectionProvider)explorer.getAdapter(IPostSelectionProvider.class);
ISelection input = selectionProvider.getSelection();
if (input.isEmpty())
return;
// Resource resource = ResourceAdaptionUtils.toSingleResource(selectionProvider.getSelection());
// if (resource == null)
// return;
final String perspectiveId = WorkbenchUtils.getCurrentPerspectiveId();
Control control = explorer.getControl();
Shell shell = control.getShell();
// Try the doubleClick-extensions
sessionContext.getSession().asyncRequest(new ChooseActionRequest(shell, explorer, input, perspectiveId));
} else if (e.keyCode == SWT.F2) {
IPostSelectionProvider selectionProvider = (IPostSelectionProvider)explorer.getAdapter(IPostSelectionProvider.class);
NodeContext context = ISelectionUtils.filterSingleSelection(selectionProvider.getSelection(), NodeContext.class);
if (context == null || !isEditable(context))
return;
for (String column : editingColumnResolver.execute(context)) {
// Prefix column key with '#' to indicate that
// textual editing is preferred if supported.
String error = explorer.startEditing(context, "#" + column);
if (error == null)
return;
}
return;
}
}
private boolean isEditable(NodeContext context) {
try {
return Simantics.getSession().syncRequest(new IsNodeContextModifiable(context));
} catch (DatabaseException e) {
Activator.getDefault().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID,
"Failed to check node context modifiability, see exception for details.", e));
return false;
}
}
}