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/*******************************************************************************
* Copyright (c) 2017 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
* Wind River Systems - added support for IToggleBreakpointsTargetFactory
*******************************************************************************/
package org.eclipse.debug.ui.actions;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdapterManager;
import org.eclipse.core.runtime.Platform;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.model.ISuspendResume;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.actions.ActionMessages;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.contexts.DebugContextEvent;
import org.eclipse.debug.ui.contexts.IDebugContextListener;
import org.eclipse.debug.ui.contexts.IDebugContextManager;
import org.eclipse.debug.ui.contexts.IDebugContextService;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.text.TextSelection;
import org.eclipse.jface.text.source.IVerticalRulerInfo;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchPartSite;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.IUpdate;
/**
* Action to run to line in a vertical ruler of a workbench part containing a
* document. The part must provide an <code>IRunToLineTarget</code> adapter and
* <code>ISuspendResume</code> adapter.
* <p>
* Clients may instantiate this class.
* </p>
*
* @since 3.12
* @see org.eclipse.debug.ui.actions.RulerToggleBreakpointActionDelegate
* @noextend This class is not intended to be subclassed by clients.
*/
public class RunToLineAction extends Action implements IUpdate {
private IWorkbenchPart fActivePart = null;
private IRunToLineTarget fPartTarget = null;
private DebugContextListener fContextListener = new DebugContextListener();
private ISuspendResume fTargetElement = null;
private IDocument fDocument;
private IVerticalRulerInfo fRulerInfo;
class DebugContextListener implements IDebugContextListener {
protected void contextActivated(ISelection selection) {
fTargetElement = null;
if (selection instanceof IStructuredSelection) {
IStructuredSelection ss = (IStructuredSelection) selection;
if (ss.size() == 1) {
fTargetElement = (ISuspendResume) DebugPlugin.getAdapter(ss.getFirstElement(), ISuspendResume.class);
}
}
update();
}
@Override
public void debugContextChanged(DebugContextEvent event) {
contextActivated(event.getContext());
}
}
/**
* Constructs a new action to toggle a breakpoint in the given
* part containing the given document and ruler.
*
* @param part the part in which to toggle the breakpoint - provides
* an <code>IToggleBreakpointsTarget</code> adapter
* @param document the document breakpoints are being set in or
* <code>null</code> when the document should be derived from the
* given part
* @param rulerInfo specifies location the user has double-clicked
*/
public RunToLineAction(IWorkbenchPart part, IDocument document, IVerticalRulerInfo rulerInfo) {
super(ActionMessages.RunToLineAction_2 + '\t' + DebugUIPlugin.formatKeyBindingString(SWT.MOD1 + SWT.MOD3, ActionMessages.RunToLineAction_3));
fActivePart = part;
fDocument = document;
fRulerInfo = rulerInfo;
initializeListeners();
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.action.IAction#run()
*/
@Override
public void run() {
doIt();
}
/* (non-Javadoc)
* @see org.eclipse.jface.action.Action#runWithEvent(org.eclipse.swt.widgets.Event)
*/
@Override
public void runWithEvent(Event event) {
if (event.widget instanceof MenuItem) {
doIt();
} else {
// Even comes here on RulerClick, perform Run to Line if Ctrl Alt
// Click was used
if ((event.stateMask & SWT.MOD1) > 0 && (event.stateMask & SWT.MOD3) > 0) {
doIt();
}
}
}
void doIt() {
if (fPartTarget != null && fTargetElement != null) {
try {
IDocument document= getDocument();
if (document != null) {
int line = fRulerInfo.getLineOfLastMouseButtonActivity();
if (line > -1) {
ITextSelection selection = getTextSelection(document, line);
fPartTarget.runToLine(fActivePart, selection, fTargetElement);
}
}
} catch (CoreException e) {
DebugUIPlugin.errorDialog(fActivePart.getSite().getWorkbenchWindow().getShell(), ActionMessages.RunToLineAction_0, ActionMessages.RunToLineAction_1, e.getStatus()); //
} catch (BadLocationException e) {
// ignore
}
}
}
/**
* Disposes this action. Clients must call this method when
* this action is no longer needed.
*/
public void dispose() {
IDebugContextManager manager = DebugUITools.getDebugContextManager();
if (fActivePart != null) {
manager.getContextService(fActivePart.getSite().getWorkbenchWindow()).removeDebugContextListener(fContextListener);
}
fActivePart = null;
fTargetElement = null;
fPartTarget = null;
}
/* (non-Javadoc)
* @see org.eclipse.ui.texteditor.IUpdate#update()
*/
@Override
public void update() {
Runnable r = new Runnable() {
@Override
public void run() {
setEnabled(isTargetEnabled());
}
};
DebugUIPlugin.getStandardDisplay().asyncExec(r);
}
private boolean isTargetEnabled() {
boolean enabled = false;
if (fPartTarget != null && fTargetElement != null) {
IWorkbenchPartSite site = fActivePart.getSite();
if (site != null) {
ISelectionProvider selectionProvider = site.getSelectionProvider();
if (selectionProvider != null) {
ISelection selection = selectionProvider.getSelection();
enabled = fTargetElement.isSuspended() && fPartTarget.canRunToLine(fActivePart, selection, fTargetElement);
}
}
}
return enabled;
}
private void initializeListeners() {
IDebugContextManager manager = DebugUITools.getDebugContextManager();
IWorkbenchWindow workbenchWindow = fActivePart.getSite().getWorkbenchWindow();
IDebugContextService service = manager.getContextService(workbenchWindow);
service.addDebugContextListener(fContextListener);
fPartTarget = fActivePart.getAdapter(IRunToLineTarget.class);
if (fPartTarget == null) {
IAdapterManager adapterManager = Platform.getAdapterManager();
if (adapterManager.hasAdapter(fActivePart, IRunToLineTarget.class.getName())) {
fPartTarget = (IRunToLineTarget) adapterManager.loadAdapter(fActivePart, IRunToLineTarget.class.getName());
}
}
ISelection activeContext = service.getActiveContext();
fContextListener.contextActivated(activeContext);
}
/**
* Returns the document on which this action operates.
*
* @return the document or <code>null</code> if none
*/
private IDocument getDocument() {
if (fDocument != null) {
return fDocument;
}
if (fActivePart instanceof ITextEditor) {
ITextEditor editor = (ITextEditor) fActivePart;
IDocumentProvider provider = editor.getDocumentProvider();
if (provider != null) {
return provider.getDocument(editor.getEditorInput());
}
}
IDocument doc = fActivePart.getAdapter(IDocument.class);
if (doc != null) {
return doc;
}
return null;
}
/**
* Determines the text selection for the ruler action. If clicking on the
* ruler inside the highlighted text, return the text selection for the
* highlighted text. Otherwise, return a text selection representing the
* start of the line.
*
* @param document The IDocument backing the Editor.
* @param line The line clicked on in the ruler.
* @return An ITextSelection as described.
* @throws BadLocationException If underlying operations throw.
*/
private ITextSelection getTextSelection(IDocument document, int line) throws BadLocationException {
IRegion region = document.getLineInformation(line);
ITextSelection textSelection = new TextSelection(document, region.getOffset(), 0);
ISelectionProvider provider = fActivePart.getSite().getSelectionProvider();
if (provider != null) {
ISelection selection = provider.getSelection();
if (selection instanceof ITextSelection && ((ITextSelection) selection).getStartLine() <= line && ((ITextSelection) selection).getEndLine() >= line) {
textSelection = (ITextSelection) selection;
}
}
return textSelection;
}
}
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