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package org.eclipse.debug.internal.ui.launchConfigurations;
/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved.
*/
import java.text.MessageFormat;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.DebugEvent;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.IDebugEventSetListener;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.ILaunchListener;
import org.eclipse.debug.core.ILaunchManager;
import org.eclipse.debug.core.model.IDebugElement;
import org.eclipse.debug.core.model.IProcess;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.WorkbenchException;
/**
* The perspective manager manages the 'perspective' settings
* defined by launch configurations. Specifically it: <ul>
* <li>changes perspectives as launches are registered</li>
* <li>change perspective when a thread suspends</li>
* </ul>
*
* @see IDebugUIContants.ATTR_RUN_PERSPECTIVE
* @see IDebugUIContants.ATTR_DEBUG_PERSPECTIVE
*/
public class PerspectiveManager implements ILaunchListener, IDebugEventSetListener {
/**
* Singleton perspective manager
*/
private static PerspectiveManager fgManager;
/**
* Constructs the perspective manager
*/
private PerspectiveManager() {
}
/**
* Returns the perspective manager
*/
public static PerspectiveManager getDefault() {
if (fgManager == null) {
fgManager = new PerspectiveManager();
}
return fgManager;
}
/**
* Called by the debug ui plug-in on startup.
* The perspective manager starts listening for
* launches to be registered.
*/
public void startup() {
DebugPlugin plugin = DebugPlugin.getDefault();
plugin.getLaunchManager().addLaunchListener(this);
plugin.addDebugEventListener(this);
}
/**
* Called by the debug ui plug-in on shutdown.
* The perspective manager de-registers as a
* launch listener.
*/
public void shutdown() {
DebugPlugin plugin = DebugPlugin.getDefault();
plugin.getLaunchManager().removeLaunchListener(this);
plugin.removeDebugEventListener(this);
}
/**
* Do nothing.
*
* @see ILaunchListener#launchRemoved(ILaunch)
*/
public void launchRemoved(ILaunch launch) {
}
/**
* Do nothing.
*
* @see ILaunchListener#launchChanged(ILaunch)
*/
public void launchChanged(ILaunch launch) {
}
/**
* Switch to the perspective specified by the
* launch configuration.
*
* @see ILaunchListener#launchAdded(ILaunch)
*/
public void launchAdded(ILaunch launch) {
String perspectiveId = null;
// check event filters
try {
perspectiveId = getPerspectiveId(launch);
} catch (CoreException e) {
String name = DebugUIPlugin.getDefault().getModelPresentation().getText(launch);
switchFailed(e, name);
}
if (perspectiveId != null) {
switchToPerspective(perspectiveId);
}
}
/**
* Switches to the specified perspective
*
* @param id perspective identifier
*/
protected void switchToPerspective(final String id) {
async(new Runnable() {
public void run() {
IWorkbenchWindow window = DebugUIPlugin.getActiveWorkbenchWindow();
if (window != null) {
try {
window.getWorkbench().showPerspective(id, window);
} catch (WorkbenchException e) {
DebugUIPlugin.errorDialog(DebugUIPlugin.getShell(),
LaunchConfigurationsMessages.getString("PerspectiveManager.Error_1"), //$NON-NLS-1$
MessageFormat.format(LaunchConfigurationsMessages.getString("PerspectiveManager.Unable_to_switch_to_perspective__{0}_2"), new String[]{id}), //$NON-NLS-1$
e);
}
}
}
});
}
/**
* Utility method to submit an asnychronous runnable to the UI
*/
protected void async(Runnable r) {
Display d = DebugUIPlugin.getDefault().getStandardDisplay();
if (d != null && !d.isDisposed()) {
d.asyncExec(r);
}
}
/**
* Utility method to submit a synchronous runnable to the UI
*/
protected void sync(Runnable r) {
Display d = DebugUIPlugin.getDefault().getStandardDisplay();
if (d != null && !d.isDisposed()) {
d.syncExec(r);
}
}
/**
* Reports failure to switch perspectives to the user
*
* @param status exception status describing failure
* @param launchName the name of the launch that the
* failure is associated with
*/
protected void switchFailed(final Throwable t, final String launchName) {
sync(new Runnable() {
public void run() {
DebugUIPlugin.errorDialog(DebugUIPlugin.getShell(), LaunchConfigurationsMessages.getString("PerspectiveManager.Error_1"), //$NON-NLS-1$
MessageFormat.format(LaunchConfigurationsMessages.getString("PerspectiveManager.Unable_to_switch_perpsectives_as_specified_by_launch__{0}_4"), new String[] {launchName}), //$NON-NLS-1$
t);
}});
}
/**
* On a SUSPEND event, show the debug view. If no debug view is open,
* switch to the perspective specified by the launcher.
*
* @see IDebugEventSetListener#handleDebugEvents(DebugEvent[])
*/
public void handleDebugEvents(DebugEvent[] events) {
// open the debugger if this is a suspend event and the debug view is not yet open
// and the preferences are set to switch
for (int i = 0; i < events.length; i++) {
DebugEvent event = events[i];
if (event.getKind() == DebugEvent.SUSPEND && event.getDetail() == event.BREAKPOINT) {
// apply event filters
ILaunch launch = null;
Object source = event.getSource();
if (source instanceof IDebugElement) {
launch = ((IDebugElement)source).getLaunch();
} else if (source instanceof IProcess) {
launch = ((IProcess)source).getLaunch();
}
String perspectiveId = null;
try {
perspectiveId = getPerspectiveId(launch);
} catch (CoreException e) {
DebugUIPlugin.log(e);
}
// if no perspective specified, always switch to debug
// perspective
// this has to be done in an asynch, such that the workbench
// window can be accessed
final String id = perspectiveId;
Runnable r = new Runnable() {
public void run() {
String targetId = id;
IWorkbenchWindow window = DebugUIPlugin.getActiveWorkbenchWindow();
if (window == null) {
return;
}
if (targetId == null) {
IWorkbenchPage page = window.getActivePage();
if (page != null) {
IViewPart part = page.findView(IDebugUIConstants.ID_DEBUG_VIEW);
if (part == null) {
targetId = IDebugUIConstants.ID_DEBUG_PERSPECTIVE;
}
}
}
if (targetId != null) {
// re-open the window if minimized
Shell shell= window.getShell();
if (shell != null) {
if (shell.getMinimized()) {
shell.setMinimized(false);
}
if (DebugUIPlugin.getDefault().getPreferenceStore().getBoolean(IDebugUIConstants.PREF_ACTIVATE_WORKBENCH)) {
shell.forceActive();
}
}
switchToPerspective(targetId);
}
}
};
async(r);
}
}
}
/**
* Returns the perspective associated with the
* given launch, or <code>null</code> if none.
*
* @param launch a launch
* @return the perspective associated with the launch,
* or <code>null</code>
* @exception CoreException if unable to retrieve a required
* launch configuration attribute
*/
protected String getPerspectiveId(ILaunch launch) throws CoreException {
if (launch == null) {
return null;
}
ILaunchConfiguration config = launch.getLaunchConfiguration();
String perspectiveId = null;
String mode = launch.getLaunchMode();
if (mode.equals(ILaunchManager.DEBUG_MODE)) {
perspectiveId = config.getAttribute(IDebugUIConstants.ATTR_TARGET_DEBUG_PERSPECTIVE, (String)null);
if (perspectiveId != null && perspectiveId.equals(IDebugUIConstants.PERSPECTIVE_DEFAULT)) {
perspectiveId = DebugUIPlugin.getDefault().getPreferenceStore().getString(IDebugUIConstants.PREF_SHOW_DEBUG_PERSPECTIVE_DEFAULT);
}
} else {
perspectiveId = config.getAttribute(IDebugUIConstants.ATTR_TARGET_RUN_PERSPECTIVE, (String)null);
if (perspectiveId != null && perspectiveId.equals(IDebugUIConstants.PERSPECTIVE_DEFAULT)) {
perspectiveId = DebugUIPlugin.getDefault().getPreferenceStore().getString(IDebugUIConstants.PREF_SHOW_RUN_PERSPECTIVE_DEFAULT);
}
}
if (perspectiveId != null && perspectiveId.equals(IDebugUIConstants.PERSPECTIVE_NONE)) {
perspectiveId = null;
}
return perspectiveId;
}
}
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