/*******************************************************************************
* Copyright (c) 2006, 2016 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.debug.internal.ui.actions;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.eclipse.cdt.debug.internal.ui.ICDebugHelpContextIds;
import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IColumnPresentation;
import org.eclipse.debug.internal.ui.viewers.model.provisional.TreeModelViewer;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.ListSelectionDialog;
import org.eclipse.ui.texteditor.IUpdate;
/**
* Configures visible columns in an asynch tree viewer/
*
* @since 5.0
*/
public class ConfigureColumnsAction extends Action implements IUpdate {
private TreeModelViewer fViewer;
class ColumnContentProvider implements IStructuredContentProvider {
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
@Override
public Object[] getElements( Object inputElement ) {
return ((IColumnPresentation)inputElement).getAvailableColumns();
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#dispose()
*/
@Override
public void dispose() {
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
@Override
public void inputChanged( Viewer viewer, Object oldInput, Object newInput ) {
}
}
class ColumnLabelProvider extends LabelProvider {
private Map<ImageDescriptor, Image> fImages = new HashMap<>();
@Override
public Image getImage( Object element ) {
ImageDescriptor imageDescriptor = fViewer.getColumnPresentation().getImageDescriptor( (String)element );
if ( imageDescriptor != null ) {
Image image = fImages.get( imageDescriptor );
if ( image == null ) {
image = imageDescriptor.createImage();
fImages.put( imageDescriptor, image );
}
return image;
}
return null;
}
@Override
public String getText( Object element ) {
return fViewer.getColumnPresentation().getHeader( (String)element );
}
@Override
public void dispose() {
super.dispose();
Iterator<Image> iterator = fImages.values().iterator();
while( iterator.hasNext() ) {
Image image = iterator.next();
image.dispose();
}
fImages.clear();
}
}
public ConfigureColumnsAction( TreeModelViewer viewer ) {
setText( "Select &Columns..." );
setId( CDebugUIPlugin.getUniqueIdentifier() + ".ConfigureColumnsAction" ); //$NON-NLS-1$
PlatformUI.getWorkbench().getHelpSystem().setHelp( this, ICDebugHelpContextIds.CONFIGURE_COLUMNS_ACTION );
fViewer = viewer;
}
/* (non-Javadoc)
* @see org.eclipse.ui.texteditor.IUpdate#update()
*/
@Override
public void update() {
setEnabled( fViewer.isShowColumns() );
}
/* (non-Javadoc)
* @see org.eclipse.jface.action.Action#run()
*/
@Override
public void run() {
ListSelectionDialog dialog = new ListSelectionDialog( fViewer.getControl().getShell(), fViewer.getColumnPresentation(), new ColumnContentProvider(),
new ColumnLabelProvider(), "Select the &columns to display:" );
PlatformUI.getWorkbench().getHelpSystem().setHelp( this, ICDebugHelpContextIds.CONFIGURE_COLUMNS_DIALOG );
String[] visibleColumns = fViewer.getVisibleColumns();
List<String> initialSelection = new ArrayList<>( visibleColumns.length );
for( int i = 0; i < visibleColumns.length; i++ ) {
initialSelection.add( visibleColumns[i] );
}
dialog.setTitle( "Select Columns" );
dialog.setInitialElementSelections( initialSelection );
if ( dialog.open() == Window.OK ) {
Object[] result = dialog.getResult();
if ( result.length == 0 ) {
fViewer.setShowColumns( false );
}
else {
String[] ids = new String[result.length];
System.arraycopy( result, 0, ids, 0, result.length );
fViewer.resetColumnSizes( ids );
fViewer.setVisibleColumns( ids );
}
}
}
}