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/*******************************************************************************
* Copyright (c) 2008, 2015 Wind River Systems and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Wind River Systems - initial API and implementation
* Winnie Lai (Texas Instruments) - Individual Element Number Format (Bug 202556)
*******************************************************************************/
package org.eclipse.cdt.dsf.debug.ui.viewmodel.actions;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMAdapter;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMContext;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMNode;
import org.eclipse.cdt.dsf.ui.viewmodel.IVMProvider;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
import org.eclipse.debug.internal.ui.viewers.model.provisional.TreeModelViewer;
import org.eclipse.debug.ui.AbstractDebugView;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.IDebugView;
import org.eclipse.debug.ui.contexts.IDebugContextService;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreePath;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.IPartService;
import org.eclipse.ui.ISelectionService;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IViewSite;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.services.IServiceLocator;
/**
* Static utility methods for use with View Model related
* commands and handlers.
*
* @since 1.1
*/
public class VMHandlerUtils {
/**
* Retrieves the active VM provider based on the currently active
* selection and part.
* @param serviceLocator Service locator for access to active selection
* and part.
*
* @return The active VM provder.
*/
static public IVMProvider getActiveVMProvider(IServiceLocator serviceLocator) {
ISelection selection = null;
ISelectionService selectionService =
serviceLocator.getService(ISelectionService.class);
if (selectionService != null) {
selection = selectionService.getSelection();
}
if (selection != null && !selection.isEmpty()) {
return getVMProviderForSelection(selection);
}
else {
IWorkbenchPart part = null;
IPartService partService = serviceLocator.getService(IPartService.class);
if (partService != null) {
part = partService.getActivePart();
return getVMProviderForPart(part);
}
return null;
}
}
/**
* Retrieves the active VM provider based on the given execution event.
* @param event The execution event which is usually given as an argument
* to the command handler execution call.
*
* @return The active VM provder.
*/
static public IVMProvider getActiveVMProvider(ExecutionEvent event) {
ISelection selection = HandlerUtil.getCurrentSelection(event);
if (selection != null && !selection.isEmpty()) {
return getVMProviderForSelection(selection);
}
else {
IWorkbenchPart part = HandlerUtil.getActivePart(event);
return getVMProviderForPart(part);
}
}
/**
* Retrieves the selection from a given service locator's selection service.
* @param serviceLocator Service locator for access to active selection
* and part.
*
* @return The selection if available; return null otherwise.
* @since 2.2
*/
static public ISelection getSelection(IServiceLocator serviceLocator) {
ISelectionService selectionService =
serviceLocator.getService(ISelectionService.class);
if (selectionService != null) {
return selectionService.getSelection();
}
return null;
}
public static IVMProvider getVMProviderForPart(IWorkbenchPart part) {
IDebugContextService contextService =
DebugUITools.getDebugContextManager().getContextService(part.getSite().getWorkbenchWindow());
ISelection debugContext = contextService.getActiveContext(getPartId(part));
if (debugContext == null) {
debugContext = contextService.getActiveContext();
}
Object input = null;
if (debugContext instanceof IStructuredSelection) {
input = ((IStructuredSelection)debugContext).getFirstElement();
}
if (part instanceof IDebugView) {
Viewer viewer = ((IDebugView)part).getViewer();
if (input instanceof IAdaptable && viewer instanceof TreeModelViewer) {
IPresentationContext presContext = ((TreeModelViewer)viewer).getPresentationContext();
IVMAdapter vmAdapter = ((IAdaptable)input).getAdapter(IVMAdapter.class);
if (vmAdapter != null) {
return vmAdapter.getVMProvider(presContext);
}
}
}
return null;
}
private static String getPartId(IWorkbenchPart part) {
if (part instanceof IViewPart) {
IViewSite site = (IViewSite)part.getSite();
return site.getId() + (site.getSecondaryId() != null ? (":" + site.getSecondaryId()) : ""); //$NON-NLS-1$ //$NON-NLS-2$
} else {
return part.getSite().getId();
}
}
public static IVMProvider getVMProviderForSelection(ISelection selection) {
if (selection instanceof IStructuredSelection) {
Object element = ((IStructuredSelection)selection).getFirstElement();
if (element instanceof IVMContext) {
return ((IVMContext)element).getVMNode().getVMProvider();
}
}
return null;
}
/**
* Returns the viewer input element for the viewer in the given
* presentation context. The input element is retrieved only if the
* presentation context's view is based on the {@link AbstractDebugView}.
* Returns <code>null</code> if not found.
* @since 2.5
*/
public static Object getViewerInput(IPresentationContext context) {
if (context.getPart() instanceof AbstractDebugView) {
Viewer viewer = ((AbstractDebugView)context.getPart()).getViewer();
if (viewer != null) {
return viewer.getInput();
}
}
return null;
}
/**
* Returns the {@link IVMNode} associated with the element in the
* given path. Returns <code>null</code> if not found.
*
* @since 2.5
*/
public static IVMNode getVMNode(Object viewerInput, TreePath path) {
if (path.getSegmentCount() != 0) {
return (IVMNode) DebugPlugin.getAdapter(path.getLastSegment(), IVMNode.class);
} else {
return (IVMNode) DebugPlugin.getAdapter(viewerInput, IVMNode.class);
}
}
}
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