From f4a85817e6885961deba3a7ac65a0236d45a1bb4 Mon Sep 17 00:00:00 2001
From: Ken Ryall <ken.ryall@nokia.com>
Date: Mon, 5 Nov 2007 15:42:32 +0000
Subject: [PATCH] Bug 207231, view memory on variables.

---
 debug/org.eclipse.cdt.debug.ui/plugin.xml     |  13 ++
 .../ui/actions/ViewMemoryActionDelegate.java  | 190 ++++++++++++++++++
 2 files changed, 203 insertions(+)
 create mode 100644 debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/ViewMemoryActionDelegate.java

diff --git a/debug/org.eclipse.cdt.debug.ui/plugin.xml b/debug/org.eclipse.cdt.debug.ui/plugin.xml
index 74e7b2148e2..1ebe6501976 100644
--- a/debug/org.eclipse.cdt.debug.ui/plugin.xml
+++ b/debug/org.eclipse.cdt.debug.ui/plugin.xml
@@ -357,6 +357,19 @@
                id="org.eclipse.cdt.debug.ui.actions.popup.RunToLine">
          </action>
       </viewerContribution>
+ 
+      <objectContribution
+            objectClass="org.eclipse.cdt.debug.core.model.ICVariable"
+            id="org.eclipse.cdt.debug.ui.CVariableActions">
+         <action
+               label="View Memory"
+               helpContextId="view_memory_context"
+               class="org.eclipse.cdt.debug.internal.ui.actions.ViewMemoryActionDelegate"
+               menubarPath="variableGroup"
+               enablesFor="+"
+               id="org.eclipse.cdt.debug.ui.actions.ViewMemoryAction">
+         </action>
+      </objectContribution>
      
  <objectContribution
             objectClass="org.eclipse.cdt.debug.core.model.ICVariable"
diff --git a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/ViewMemoryActionDelegate.java b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/ViewMemoryActionDelegate.java
new file mode 100644
index 00000000000..80e08148ff8
--- /dev/null
+++ b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/actions/ViewMemoryActionDelegate.java
@@ -0,0 +1,190 @@
+package org.eclipse.cdt.debug.internal.ui.actions;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.cdt.debug.core.model.ICVariable;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.debug.core.DebugException;
+import org.eclipse.debug.core.DebugPlugin;
+import org.eclipse.debug.core.model.IDebugElement;
+import org.eclipse.debug.core.model.IMemoryBlock;
+import org.eclipse.debug.core.model.IMemoryBlockExtension;
+import org.eclipse.debug.core.model.IMemoryBlockRetrieval;
+import org.eclipse.debug.core.model.IMemoryBlockRetrievalExtension;
+import org.eclipse.debug.internal.ui.DebugUIMessages;
+import org.eclipse.debug.internal.ui.DebugUIPlugin;
+import org.eclipse.debug.internal.ui.views.memory.MemoryViewUtil;
+import org.eclipse.debug.ui.DebugUITools;
+import org.eclipse.debug.ui.IDebugUIConstants;
+import org.eclipse.debug.ui.memory.IMemoryRendering;
+import org.eclipse.debug.ui.memory.IMemoryRenderingContainer;
+import org.eclipse.debug.ui.memory.IMemoryRenderingSite;
+import org.eclipse.debug.ui.memory.IMemoryRenderingType;
+import org.eclipse.jface.action.IAction;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.ui.IObjectActionDelegate;
+import org.eclipse.ui.IViewPart;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.IWorkbenchPart;
+
+public class ViewMemoryActionDelegate implements IObjectActionDelegate {
+
+	private ICVariable[] variables;
+
+	public ViewMemoryActionDelegate() {
+		// TODO Auto-generated constructor stub
+	}
+
+	public void setActivePart(IAction action, IWorkbenchPart targetPart) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	private IMemoryBlockRetrieval getMemoryBlockRetrieval(Object object)
+	{
+		IMemoryBlockRetrieval retrieval = null;
+
+		if (object instanceof IAdaptable)
+		{
+			IAdaptable adaptable = (IAdaptable)object;
+			retrieval = (IMemoryBlockRetrieval)adaptable.getAdapter(IMemoryBlockRetrieval.class);
+		}
+		
+		if (retrieval == null && object instanceof IDebugElement)
+		{
+			IDebugElement de = (IDebugElement)object;
+			retrieval = de.getDebugTarget();
+		}
+		
+		return retrieval;
+	}
+
+	/**
+	 * @param memoryBlock
+	 * @param primaryType
+	 * @throws CoreException
+	 */
+	private void createRenderingInContainer(IMemoryBlock memoryBlock, IMemoryRenderingType primaryType, String paneId) throws CoreException {
+
+		IWorkbenchPage page = DebugUIPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getActivePage();
+		IViewPart newView = page.showView(IDebugUIConstants.ID_MEMORY_VIEW, null, IWorkbenchPage.VIEW_ACTIVATE);
+		
+		IMemoryRenderingSite memSite = (IMemoryRenderingSite) newView.getSite();
+
+		IMemoryRendering rendering = primaryType.createRendering();
+		IMemoryRenderingContainer container = memSite.getContainer(paneId);
+		rendering.init(container, memoryBlock);
+		container.addMemoryRendering(rendering);
+	}
+
+	private void addDefaultRenderings(IMemoryBlock memoryBlock)
+	{
+		IMemoryRenderingType primaryType = DebugUITools.getMemoryRenderingManager().getPrimaryRenderingType(memoryBlock);
+		IMemoryRenderingType renderingTypes[] = DebugUITools.getMemoryRenderingManager().getDefaultRenderingTypes(memoryBlock);
+		
+		// create primary rendering
+		try {
+			if (primaryType != null)
+			{
+				createRenderingInContainer(memoryBlock, primaryType, IDebugUIConstants.ID_RENDERING_VIEW_PANE_1);
+			}
+			else if (renderingTypes.length > 0)
+			{
+				primaryType = renderingTypes[0];
+				createRenderingInContainer(memoryBlock, renderingTypes[0], IDebugUIConstants.ID_RENDERING_VIEW_PANE_1);
+			}
+		} catch (CoreException e1) {
+			DebugUIPlugin.log(e1);	
+		}
+		
+		for (int i = 0; i<renderingTypes.length; i++)
+		{
+			try {
+				boolean create = true;
+				if (primaryType != null)
+				{
+					if (primaryType.getId().equals(renderingTypes[i].getId()))
+						create = false;
+				}
+				if (create)
+					createRenderingInContainer(memoryBlock, renderingTypes[i], IDebugUIConstants.ID_RENDERING_VIEW_PANE_2);
+			} catch (CoreException e) {
+				DebugUIPlugin.log(e);
+			}
+		}
+	}
+
+	private void addMemoryBlock() throws DebugException
+	{					// if the debug session supports IMemoryBlockExtensionRetrieval
+
+		Object elem = DebugUITools.getDebugContext();
+		
+		IMemoryBlockRetrieval retrieval = getMemoryBlockRetrieval(elem);
+		
+		if (retrieval == null)
+			return;
+
+		IMemoryBlockRetrievalExtension memRetrieval = (IMemoryBlockRetrievalExtension)retrieval;
+		
+		// get extended memory block with the expression entered
+		IMemoryBlockExtension memBlock = memRetrieval.getExtendedMemoryBlock("0x12345678", elem);
+		
+		// add block to memory block manager
+		if (memBlock != null)
+		{
+			IMemoryBlock[] memArray = new IMemoryBlock[]{memBlock};
+			
+			DebugPlugin.getDefault().getMemoryBlockManager().addMemoryBlocks(memArray);
+			addDefaultRenderings(memBlock);
+		}
+		else
+		{
+			// open error if it failed to retrieve a memory block
+			MemoryViewUtil.openError(DebugUIMessages.AddMemoryBlockAction_title, DebugUIMessages.AddMemoryBlockAction_noMemoryBlock, null);
+		}
+}
+	
+	public void run(IAction action) {
+		ICVariable[] vars = getVariables();
+		if ( vars != null && vars.length > 0 ) {
+		
+		}
+	}
+
+	public void selectionChanged(IAction action, ISelection selection) {
+		if ( selection instanceof IStructuredSelection ) {
+			List list = new ArrayList();
+			IStructuredSelection ssel = (IStructuredSelection)selection;
+			Iterator i = ssel.iterator();
+			while( i.hasNext() ) {
+				Object o = i.next();
+				if ( o instanceof ICVariable ) {
+					ICVariable var = (ICVariable)o;
+					boolean enabled = true;
+					action.setEnabled( enabled );
+					if ( enabled ) {
+						list.add( o );
+					}
+				}
+			}
+			setVariables( (ICVariable[])list.toArray( new ICVariable[list.size()] ) );
+		}
+		else {
+			action.setChecked( false );
+			action.setEnabled( false );
+		}
+	}
+
+	protected ICVariable[] getVariables() {
+		return variables;
+	}
+
+	private void setVariables( ICVariable[] variables ) {
+		this.variables = variables;
+	}
+
+}