diff options
Diffstat (limited to 'debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/ui/breakpoints/AddWatchpointOnVariableActionDelegate.java')
-rw-r--r-- | debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/ui/breakpoints/AddWatchpointOnVariableActionDelegate.java | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/ui/breakpoints/AddWatchpointOnVariableActionDelegate.java b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/ui/breakpoints/AddWatchpointOnVariableActionDelegate.java new file mode 100644 index 00000000000..a9675a527a4 --- /dev/null +++ b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/ui/breakpoints/AddWatchpointOnVariableActionDelegate.java @@ -0,0 +1,93 @@ +/******************************************************************************* + * Copyright (c) 2007, 2010 Nokia 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: + * Nokia - initial API and implementation + *******************************************************************************/ +package org.eclipse.cdt.debug.ui.breakpoints; + + +import org.eclipse.cdt.debug.core.ICWatchpointTarget; +import org.eclipse.cdt.debug.internal.core.CRequest; +import org.eclipse.debug.core.DebugPlugin; +import org.eclipse.jface.action.IAction; +import org.eclipse.jface.viewers.ISelection; +import org.eclipse.jface.viewers.StructuredSelection; +import org.eclipse.jface.viewers.TreeSelection; + +/** + * Invoked when user right clicks on an element in the Variables or Expressions + * view and selects 'Add Watchpoint (C/C++)' Clients can register this action for + * their specific element type which adapts to {@link ICWatchpointTarget}. + * + * + * @noextend This class is not intended to be subclassed by clients. + * @since 7.2 + */ +public class AddWatchpointOnVariableActionDelegate extends AddWatchpointActionDelegate { + + /** The target variable/expression */ + private ICWatchpointTarget fVar; + + /** + * Constructor + */ + public AddWatchpointOnVariableActionDelegate() { + super(); + } + + private class CanCreateWatchpointRequest extends CRequest implements ICWatchpointTarget.CanCreateWatchpointRequest { + boolean fCanCreate; + @Override + public boolean getCanCreate() { + return fCanCreate; + } + @Override + public void setCanCreate(boolean value) { + fCanCreate = value; + } + }; + + /** + * Record the target variable/expression + * + * @see org.eclipse.ui.actions.ActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, + * org.eclipse.jface.viewers.ISelection) + */ + @Override + public void selectionChanged(final IAction action, ISelection selection) { + super.selectionChanged(action, selection); + fVar = null; + if (selection == null || selection.isEmpty()) { + action.setEnabled(false); + return; + } + if (selection instanceof TreeSelection) { + Object obj = ((TreeSelection)selection).getFirstElement(); + fVar = (ICWatchpointTarget)DebugPlugin.getAdapter(obj, ICWatchpointTarget.class); + if (fVar != null) { + final ICWatchpointTarget.CanCreateWatchpointRequest request = new CanCreateWatchpointRequest() { + @Override + public void done() { + action.setEnabled(getCanCreate()); + } + }; + fVar.canSetWatchpoint(request); + return; + } + assert false : "action should not have been available for object " + obj; //$NON-NLS-1$ + } + else if (selection instanceof StructuredSelection) { + // Not sure why, but sometimes we get an extraneous empty StructuredSelection. Seems harmless enough + assert ((StructuredSelection)selection).getFirstElement() == null : "action installed in unexpected type of view/part"; //$NON-NLS-1$ + } + else { + assert false : "action installed in unexpected type of view/part"; //$NON-NLS-1$ + } + action.setEnabled(false); + } +} |