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package org.eclipse.debug.internal.ui;
/*
* Licensed Materials - Property of IBM,
* WebSphere Studio Workbench
* (c) Copyright IBM Corp 2000
*/
import java.util.*;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.debug.core.*;
import org.eclipse.debug.core.model.IDebugElement;
import org.eclipse.debug.core.model.IProcess;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
/**
* This is the debug action which appears in the desktop menu and toolbar.
*/
public abstract class ExecutionAction extends Action {
private final static String PREFIX= "execution_action.";
private final static String ERROR= "error.";
private final static String STATUS= PREFIX + "status";
/**
* @see Action
*/
public void run() {
final IWorkbenchWindow dwindow= DebugUIPlugin.getActiveWorkbenchWindow();
final IStructuredSelection selection= resolveSelection(dwindow);
// if the selection is a debug element, system process, or launch, try to do a relaunch
if (selection != null && attemptRelaunch(selection)) {
return;
}
// otherwise, resolve a launcher and an element
final Object[] launchers= resolveLaunchers(selection);
if (launchers.length == 0) {
// could not determine any launchers to use to launch
// very unlikely to happen
beep();
return;
}
BusyIndicator.showWhile(Display.getCurrent(), new Runnable() {
public void run() {
// if there are no choices to make, do the launch
if (launchers.length == 1 && selection != null) {
ILauncher launcher= (ILauncher)launchers[0];
Object[] elements= selection.toArray();
launcher.launch(elements, getMode());
} else {
// must choose a launcher
useWizard(launchers, dwindow.getShell(), selection);
}
}
});
}
/**
* Returns the mode of a launcher to use for this action
*/
protected abstract String getMode();
/**
* Returns the launch manager.
*/
protected static ILaunchManager getLaunchManager() {
return DebugPlugin.getDefault().getLaunchManager();
}
/**
* Relaunches the launch in the specified mode.
*/
public void relaunch(ILaunch launch, String mode) {
RelaunchActionDelegate.relaunch(launch, mode);
}
/**
* Determines and returns the selection that provides context for the launch,
* or <code>null</code> if there is no selection.
*/
protected IStructuredSelection resolveSelection(IWorkbenchWindow window) {
if (window == null) {
return null;
}
ISelection selection= window.getSelectionService().getSelection();
if (selection == null || selection.isEmpty() || !(selection instanceof IStructuredSelection)) {
// there is no obvious selection - go fishing
selection= null;
IWorkbenchPage page= window.getActivePage();
if (page == null) {
//workspace is closed
return null;
}
// first, see if there is an active editor, and try its input element
IEditorPart editor= page.getActiveEditor();
Object element= null;
if (editor != null) {
element= editor.getEditorInput();
}
if (selection == null && element != null) {
selection= new StructuredSelection(element);
}
}
return (IStructuredSelection)selection;
}
/**
* Resolves and returns the applicable launcher(s) to be used to launch the
* elements in the specified selection.
*/
protected Object[] resolveLaunchers(IStructuredSelection selection) {
List launchers;
if (selection == null || selection.isEmpty()) {
launchers= Arrays.asList(getLaunchManager().getLaunchers(getMode()));
} else {
launchers= new ArrayList(2);
Iterator elements= selection.iterator();
MultiStatus status= new MultiStatus(DebugUIPlugin.getDefault().getDescriptor().getUniqueIdentifier(), IDebugStatusConstants.REQUEST_FAILED, DebugUIUtils.getResourceString(STATUS), null);
while (elements.hasNext()) {
Object element= elements.next();
ILauncher defaultLauncher= null;
try {
IResource resource= null;
if (element instanceof IAdaptable) {
IAdaptable el= (IAdaptable)element;
resource= (IResource)el.getAdapter(IResource.class);
}
IProject project= null;
if (resource != null) {
project= resource.getProject();
}
if (project != null) {
defaultLauncher= getLaunchManager().getDefaultLauncher(project);
}
if (defaultLauncher != null) {
if (!defaultLauncher.getModes().contains(getMode())) {
defaultLauncher= null;
}
}
} catch (CoreException e) {
status.merge(e.getStatus());
}
if (defaultLauncher != null) {
if (!launchers.contains(defaultLauncher)) {
launchers.add(defaultLauncher);
}
}
}
if (!status.isOK()) {
DebugUIUtils.errorDialog(DebugUIPlugin.getActiveWorkbenchWindow().getShell(), PREFIX + ERROR, status);
}
if (launchers.isEmpty()) {
launchers= Arrays.asList(getLaunchManager().getLaunchers(getMode()));
}
}
return resolveVisibleLaunchers(launchers);
}
protected Object[] resolveVisibleLaunchers(List launchers) {
List visibleLaunchers= new ArrayList(2);
Iterator itr= launchers.iterator();
while (itr.hasNext()) {
ILauncher launcher= (ILauncher)itr.next();
if (DebugUIPlugin.getDefault().isVisible(launcher)) {
//cannot use itr.remove() as the list may be a fixed size list
visibleLaunchers.add(launcher);
}
}
return visibleLaunchers.toArray();
}
protected Object[] resolveWizardLaunchers(Object[] launchers) {
List wizardLaunchers= new ArrayList(2);
for (int i= 0 ; i < launchers.length; i++) {
ILauncher launcher= (ILauncher)launchers[i];
if (DebugUIPlugin.getDefault().hasWizard(launcher)) {
wizardLaunchers.add(launcher);
}
}
return wizardLaunchers.toArray();
}
/**
* If the selection contains re-launchables, a relaunch is performed
* for each launch and true is returned, otherwise, false is returned.
*/
protected boolean attemptRelaunch(IStructuredSelection selection) {
// if the selection is a debug element, system process, or launch, do a relaunch
Iterator objects= selection.iterator();
List relaunchables= null;
while (objects.hasNext()) {
Object object= objects.next();
ILaunch launch= null;
if (object instanceof IDebugElement) {
launch= ((IDebugElement)object).getLaunch();
} else if (object instanceof ILaunch) {
launch= (ILaunch)object;
} else if (object instanceof IProcess) {
launch= ((IProcess)object).getLaunch();
}
if (launch != null) {
if (relaunchables == null) {
relaunchables= new ArrayList(1);
relaunchables.add(launch);
} else if (!relaunchables.contains(launch)) {
relaunchables.add(launch);
}
}
}
if (relaunchables == null) {
return false;
} else {
Iterator itr= relaunchables.iterator();
while (itr.hasNext()) {
relaunch((ILaunch)itr.next(), getMode());
}
return true;
}
}
/**
* Use the wizard to do the launch.
*/
protected void useWizard(Object[] launchers, Shell shell, IStructuredSelection selection) {
launchers= resolveWizardLaunchers(launchers);
LaunchWizard lw= new LaunchWizard(launchers, selection, getMode());
LaunchWizardDialog dialog= new LaunchWizardDialog(shell, lw);
dialog.open();
}
/**
* Ring the bell
*/
protected void beep() {
Display display= Display.getCurrent();
if (display != null) {
display.beep();
}
}
}
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