/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.studio.ldapbrowser.ui.views.browser;
import org.apache.directory.studio.ldapbrowser.ui.BrowserUIConstants;
import org.apache.directory.studio.ldapbrowser.ui.BrowserUIPlugin;
import org.apache.directory.studio.ldapbrowser.ui.editors.entry.EntryEditor;
import org.apache.directory.studio.ldapbrowser.ui.editors.searchresult.SearchResultEditor;
import org.eclipse.jface.action.Action;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IPartListener;
import org.eclipse.ui.IPropertyListener;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.part.ViewPart;
/**
* This class implements common aspects for the Link With Editor Action.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public abstract class AbstractLinkWithEditorAction extends Action
{
/** The view */
private ViewPart viewPart;
/** The listener listening on opening/closing editors */
private IPartListener partListener = new IPartListener()
{
@Override
public void partOpened( IWorkbenchPart part )
{
registerPropertyListener( part );
}
@Override
public void partClosed( IWorkbenchPart part )
{
unregisterPropertyListener( part );
}
@Override
public void partDeactivated( IWorkbenchPart part )
{
}
@Override
public void partBroughtToTop( IWorkbenchPart part )
{
}
@Override
public void partActivated( IWorkbenchPart part )
{
}
};
/** The listener listening on input changes in editors */
private IPropertyListener propertyListener = new IPropertyListener()
{
@Override
public void propertyChanged( Object source, int propId )
{
if ( source instanceof IEditorPart && propId == BrowserUIConstants.INPUT_CHANGED )
{
linkViewWithEditor( ( IEditorPart ) source );
}
}
};
private void registerListeners()
{
// register part listeners
viewPart.getSite().getWorkbenchWindow().getPartService().addPartListener( partListener );
// register property listener
IEditorReference[] editorReferences = viewPart.getSite().getPage().getEditorReferences();
for ( IEditorReference editorReference : editorReferences )
{
IEditorPart editor = editorReference.getEditor( false );
registerPropertyListener( editor );
}
}
private void registerPropertyListener( IWorkbenchPart part )
{
if ( part instanceof EntryEditor || part instanceof SearchResultEditor )
{
part.addPropertyListener( propertyListener );
}
}
private void unregisterListeners()
{
// unregister part listener
viewPart.getSite().getWorkbenchWindow().getPartService().removePartListener( partListener );
// unregister property listener
IEditorReference[] editorReferences = viewPart.getSite().getPage().getEditorReferences();
for ( IEditorReference editorReference : editorReferences )
{
IEditorPart editor = editorReference.getEditor( false );
unregisterPropertyListener( editor );
}
}
private void unregisterPropertyListener( IWorkbenchPart part )
{
if ( part instanceof EntryEditor || part instanceof SearchResultEditor )
{
part.removePropertyListener( propertyListener );
}
}
public AbstractLinkWithEditorAction( ViewPart viewPart, String message )
{
super( message, AS_CHECK_BOX ); //$NON-NLS-1$
setImageDescriptor(
BrowserUIPlugin.getDefault().getImageDescriptor( BrowserUIConstants.IMG_LINK_WITH_EDITOR ) );
setEnabled( true );
setChecked( BrowserUIPlugin.getDefault().getPreferenceStore()
.getBoolean( BrowserUIConstants.PREFERENCE_BROWSER_LINK_WITH_EDITOR ) );
this.viewPart = viewPart;
}
protected void init()
{
// Enable the listeners
if ( isChecked() )
{
registerListeners();
}
}
/**
* {@inheritDoc}
*/
public void run()
{
setChecked( isChecked() );
BrowserUIPlugin.getDefault().getPreferenceStore()
.setValue( BrowserUIConstants.PREFERENCE_BROWSER_LINK_WITH_EDITOR, isChecked() );
if ( isChecked() )
{
// Enable the listener
registerListeners();
// link
IEditorPart activeEditor = viewPart.getSite().getWorkbenchWindow().getActivePage().getActiveEditor();
linkViewWithEditor( activeEditor );
}
else
{
// Disable the listener
unregisterListeners();
}
}
/**
* Links the view with the right editor
*
* @param partRef the part
*/
protected abstract void linkViewWithEditor( IWorkbenchPart part );
/**
* Disposes this action.
*/
public void dispose()
{
if ( partListener != null && propertyListener != null )
{
unregisterListeners();
propertyListener = null;
partListener = null;
}
viewPart = null;
}
}