Add listener interface to MemoryView.

- When the target address of the memory view changes, an attached
  listener is now notified. This lets the inspector window's text input
  keep in sync with the current address when keyboard navigating the
  memory view.

src/apps/debugger/user_interface/gui/inspector_window/InspectorWindow.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011, Rene Gollent, [email protected]. All rights reserved.
+ * Copyright 2011-2013, Rene Gollent, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 
@@ -156,7 +156,7 @@ InspectorWindow::_Init()
 	int32 targetEndian = fTeam->GetArchitecture()->IsBigEndian()
 		? EndianModeBigEndian : EndianModeLittleEndian;
 
-	scrollView->SetTarget(fMemoryView = MemoryView::Create(fTeam));
+	scrollView->SetTarget(fMemoryView = MemoryView::Create(fTeam, this));
 
 	fAddressInput->SetTarget(this);
 	fPreviousBlockButton->SetTarget(this);
@@ -221,6 +221,7 @@ InspectorWindow::MessageReceived(BMessage* msg)
 			}
 
 			if (addressValid) {
+				fCurrentAddress = address;
 				if (fCurrentBlock != NULL
 					&& !fCurrentBlock->Contains(address)) {
 					fCurrentBlock->ReleaseReference();
@@ -231,11 +232,6 @@ InspectorWindow::MessageReceived(BMessage* msg)
 					fListener->InspectRequested(address, this);
 				else
 					fMemoryView->SetTargetAddress(fCurrentBlock, address);
-
-				fCurrentAddress = address;
-				BString computedAddress;
-				computedAddress.SetToFormat("0x%" B_PRIx64, address);
-				fAddressInput->SetText(computedAddress.String());
 			}
 			break;
 		}
@@ -289,6 +285,19 @@ InspectorWindow::MemoryBlockRetrieved(TeamMemoryBlock* block)
 }
 
 
+void
+InspectorWindow::TargetAddressChanged(target_addr_t address)
+{
+	AutoLocker<BLooper> lock(this);
+	if (lock.IsLocked()) {
+		fCurrentAddress = address;
+		BString computedAddress;
+		computedAddress.SetToFormat("0x%" B_PRIx64, address);
+		fAddressInput->SetText(computedAddress.String());
+	}
+}
+
+
 status_t
 InspectorWindow::LoadSettings(const GuiTeamUiSettings& settings)
 {

src/apps/debugger/user_interface/gui/inspector_window/InspectorWindow.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011, Rene Gollent, [email protected]. All rights reserved.
+ * Copyright 2011-2013, Rene Gollent, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef INSPECTOR_WINDOW_H
@@ -8,6 +8,7 @@
 
 #include <Window.h>
 
+#include "MemoryView.h"
 #include "TeamMemoryBlock.h"
 #include "Types.h"
 
@@ -17,13 +18,13 @@ class BMenuField;
 class BMessenger;
 class BTextControl;
 class GuiTeamUiSettings;
-class MemoryView;
 class Team;
 class UserInterfaceListener;
 
 
 class InspectorWindow : public BWindow,
-	public TeamMemoryBlock::Listener {
+	public TeamMemoryBlock::Listener,
+	public MemoryView::Listener {
 public:
 								InspectorWindow(::Team* team,
 									UserInterfaceListener* listener,
@@ -38,8 +39,12 @@ public:
 	virtual void				MessageReceived(BMessage* message);
 	virtual bool				QuitRequested();
 
+	// TeamMemoryBlock::Listener
 	virtual void				MemoryBlockRetrieved(TeamMemoryBlock* block);
 
+	// MemoryView::Listener
+	virtual	void				TargetAddressChanged(target_addr_t address);
+
 			status_t			LoadSettings(
 									const GuiTeamUiSettings& settings);
 			status_t			SaveSettings(

src/apps/debugger/user_interface/gui/inspector_window/MemoryView.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011, Rene Gollent, rene@gollent.com. All rights reserved.
+ * Copyright 2011-2013, Rene Gollent, rene@gollent.com. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 
@@ -26,7 +26,7 @@ enum {
 };
 
 
-MemoryView::MemoryView(::Team* team)
+MemoryView::MemoryView(::Team* team, Listener* listener)
 	:
 	BView("memoryView", B_WILL_DRAW | B_FRAME_EVENTS | B_NAVIGABLE
 		| B_SUBPIXEL_PRECISE),
@@ -38,7 +38,8 @@ MemoryView::MemoryView(::Team* team)
 	fTextCharsPerLine(0),
 	fHexBlocksPerLine(0),
 	fHexMode(HexMode8BitInt),
-	fTextMode(TextModeASCII)
+	fTextMode(TextModeASCII),
+	fListener(listener)
 {
 	Architecture* architecture = team->GetArchitecture();
 	fTargetAddressSize = architecture->AddressSize() * 2;
@@ -56,9 +57,9 @@ MemoryView::~MemoryView()
 
 
 /*static */ MemoryView*
-MemoryView::Create(::Team* team)
+MemoryView::Create(::Team* team, Listener* listener)
 {
-	MemoryView* self = new MemoryView(team);
+	MemoryView* self = new MemoryView(team, listener);
 
 	try {
 		self->_Init();
@@ -85,6 +86,13 @@ MemoryView::SetTargetAddress(TeamMemoryBlock* block, target_addr_t address)
 }
 
 
+void
+MemoryView::UnsetListener()
+{
+	fListener = NULL;
+}
+
+
 void
 MemoryView::AttachedToWindow()
 {
@@ -329,6 +337,8 @@ MemoryView::MessageReceived(BMessage* message)
 			_RecalcScrollBars();
 			ScrollToSelection();
 			Invalidate();
+			if (fListener != NULL)
+				fListener->TargetAddressChanged(fTargetAddress);
 			break;
 		}
 		case MSG_SET_HEX_MODE:
@@ -546,3 +556,11 @@ MemoryView::_GetNextHexBlock(char* buffer, int32 bufferSize,
 		}
 	}
 }
+
+
+//#pragma mark - Listener
+
+
+MemoryView::Listener::~Listener()
+{
+}

src/apps/debugger/user_interface/gui/inspector_window/MemoryView.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011, Rene Gollent, rene@gollent.com. All rights reserved.
+ * Copyright 2011-2013, Rene Gollent, rene@gollent.com. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 
@@ -46,15 +46,19 @@ class TeamMemoryBlock;
 
 class MemoryView : public BView {
 public:
-								MemoryView(::Team* team);
+	class Listener;
+
+								MemoryView(::Team* team, Listener* listener);
 	virtual						~MemoryView();
 
-	static MemoryView*			Create(::Team* team);
+	static MemoryView*			Create(::Team* team, Listener* listener);
 									// throws
 
 			void				SetTargetAddress(TeamMemoryBlock* block,
 									target_addr_t address);
 
+			void				UnsetListener();
+
 	virtual	void				AttachedToWindow();
 	virtual void				Draw(BRect rect);
 	virtual void				FrameResized(float width, float height);
@@ -83,6 +87,17 @@ private:
 	int32						fCurrentEndianMode;
 	int32						fHexMode;
 	int32						fTextMode;
+	Listener*					fListener;
 };
 
+
+class MemoryView::Listener {
+public:
+	virtual						~Listener();
+
+	virtual	void				TargetAddressChanged(target_addr_t address)
+									= 0;
+};
+
+
 #endif // MEMORY_VIEW_H