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/*******************************************************************************
* Copyright (c) 2006, 2009 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.debug.internal.ui.launchConfigurations;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.ILaunchConfigurationType;
import org.eclipse.debug.internal.core.IInternalDebugCoreConstants;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.ILaunchGroup;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.HelpEvent;
import org.eclipse.swt.events.HelpListener;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.FilteredTree;
import org.eclipse.ui.dialogs.PatternFilter;
import org.eclipse.ui.model.WorkbenchViewerComparator;
/**
* Overrides the default filtered tree to use our own tree viewer which supports preserving selection after filtering
*
* @see LaunchConfigurationView
* @see LaunchConfigurationViewer
*
* @since 3.3
*/
public final class LaunchConfigurationFilteredTree extends FilteredTree {
private ILaunchGroup fLaunchGroup = null;
private ViewerFilter[] fFilters = null;
private int fTreeStyle = -1;
private PatternFilter fPatternFilter = null;
/**
* Constructor
* @param parent
* @param treeStyle
* @param filter
*/
public LaunchConfigurationFilteredTree(Composite parent, int treeStyle, PatternFilter filter, ILaunchGroup group, ViewerFilter[] filters) {
super(parent, treeStyle, filter, true);
fLaunchGroup = group;
fFilters = filters;
fPatternFilter = filter;
fTreeStyle = treeStyle;
}
/**
* @see org.eclipse.ui.dialogs.FilteredTree#doCreateTreeViewer(org.eclipse.swt.widgets.Composite, int)
*/
protected TreeViewer doCreateTreeViewer(Composite cparent, int style) {
treeViewer = new LaunchConfigurationViewer(cparent, style);
treeViewer.setLabelProvider(DebugUITools.newDebugModelPresentation());
treeViewer.setComparator(new WorkbenchViewerComparator());
treeViewer.setContentProvider(new LaunchConfigurationTreeContentProvider(fLaunchGroup.getMode(), cparent.getShell()));
treeViewer.addFilter(new LaunchGroupFilter(fLaunchGroup));
treeViewer.setInput(ResourcesPlugin.getWorkspace().getRoot());
if(fFilters != null) {
for (int i = 0; i < fFilters.length; i++) {
treeViewer.addFilter(fFilters[i]);
}
}
treeViewer.getControl().addHelpListener(new HelpListener() {
public void helpRequested(HelpEvent evt) {
handleHelpRequest(evt);
}
});
return treeViewer;
}
/**
* @see org.eclipse.ui.dialogs.FilteredTree#createControl(org.eclipse.swt.widgets.Composite, int)
*/
protected void createControl(Composite cparent, int treeStyle) {
super.createControl(cparent, treeStyle);
setBackground(cparent.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
}
/**
* @see org.eclipse.ui.dialogs.FilteredTree#init(int, org.eclipse.ui.dialogs.PatternFilter)
* force it to do nothing so that we can initialize the class properly
*/
protected void init(int treeStyle, PatternFilter filter) {}
/**
* This method is used to create the actual set of controls for the dialog
*/
public void createViewControl() {
super.init(fTreeStyle, fPatternFilter);
}
/**
* Handle help events locally rather than deferring to WorkbenchHelp. This
* allows help specific to the selected config type to be presented.
*
*/
protected void handleHelpRequest(HelpEvent evt) {
if (getViewer().getTree() != evt.getSource()) {
return;
}
String id = computeContextId();
if (id != null)
PlatformUI.getWorkbench().getHelpSystem().displayHelp(id);
}
/* (non-Javadoc)
* @see org.eclipse.ui.dialogs.FilteredTree#textChanged()
*/
protected void textChanged() {
LaunchConfigurationsDialog dialog = (LaunchConfigurationsDialog)LaunchConfigurationsDialog.getCurrentlyVisibleLaunchConfigurationDialog();
if(dialog == null) {
return;
}
LaunchConfigurationTabGroupViewer viewer = dialog.getTabViewer();
if(viewer == null) {
return;
}
if(viewer.isDirty()) {
String text = getFilterString();
if(text.equals(IInternalDebugCoreConstants.EMPTY_STRING)) {
//we have removed the last char of select-all delete key, reset like the filter control does
getPatternFilter().setPattern(null);
getViewer().refresh();
return;
}
else if(text.equals(getInitialText())) {
//ignore, this is the default text set from losing focus
return;
}
String message = LaunchConfigurationsMessages.LaunchConfigurationFilteredTree_search_with_errors;
String title = LaunchConfigurationsMessages.LaunchConfigurationFilteredTree_discard_changes;
boolean cansave = viewer.canSave();
if(cansave) {
message = LaunchConfigurationsMessages.LaunchConfigurationFilteredTree_search_with_changes;
title = LaunchConfigurationsMessages.LaunchConfigurationFilteredTree_save_changes;
}
if(MessageDialog.openQuestion(getShell(), title, message)) {
if(cansave) {
viewer.handleApplyPressed();
}
else {
viewer.handleRevertPressed();
}
super.textChanged();
}
else {
clearText();
}
}
else {
super.textChanged();
}
}
/**
* Computes the context id for this viewer
* @return the context id
*/
public String computeContextId() {
try {
ISelection selection = getViewer().getSelection();
if (!selection.isEmpty() && selection instanceof IStructuredSelection ) {
IStructuredSelection structuredSelection = (IStructuredSelection) selection;
Object firstSelected = structuredSelection.getFirstElement();
ILaunchConfigurationType configType = null;
if (firstSelected instanceof ILaunchConfigurationType) {
configType = (ILaunchConfigurationType) firstSelected;
}
else if (firstSelected instanceof ILaunchConfiguration) {
configType = ((ILaunchConfiguration) firstSelected).getType();
}
if (configType != null) {
String helpContextId = LaunchConfigurationPresentationManager.getDefault().getHelpContext(configType, fLaunchGroup.getMode());
if (helpContextId != null) {
return helpContextId;
}
}
}
}
catch (CoreException ce) {DebugUIPlugin.log(ce);}
return null;
}
/**
* Returns the launch configuration viewer for this filtered tree
* @return the tree viewer appropriately cast
*/
public LaunchConfigurationViewer getLaunchConfigurationViewer() {
return (LaunchConfigurationViewer) getViewer();
}
/* (non-Javadoc)
*
* Called after a re-filter due to user typing text. Update the filter count
* in the LCD
*
* @see org.eclipse.ui.dialogs.FilteredTree#updateToolbar(boolean)
*/
protected void updateToolbar(boolean visible) {
super.updateToolbar(visible);
// update filter count
getLaunchConfigurationViewer().filterChanged();
}
}
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