* Add previous/next block navigation buttons.

* Fix a calculation error with respect to the last line of the block.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42216 a95241bf-73f2-0310-859d-f6bbb57e9c96

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

@@ -9,7 +9,9 @@
 
 #include <Alert.h>
 #include <Application.h>
+#include <Autolock.h>
 #include <Button.h>
+#include <ControlLook.h>
 #include <LayoutBuilder.h>
 #include <ScrollView.h>
 #include <TextControl.h>
@@ -22,6 +24,12 @@
 #include "UserInterface.h"
 
 
+enum {
+	MSG_NAVIGATE_PREVIOUS_BLOCK = 'npbl',
+	MSG_NAVIGATE_NEXT_BLOCK		= 'npnl'
+};
+
+
 InspectorWindow::InspectorWindow(::Team* team, UserInterfaceListener* listener)
 	:
 	BWindow(BRect(100, 100, 700, 500), "Inspector", B_TITLED_WINDOW,
@@ -99,9 +107,15 @@ InspectorWindow::_Init()
 
 	BLayoutBuilder::Group<>(this, B_VERTICAL)
 		.SetInsets(4.0f, 4.0f, 4.0f, 4.0f)
+		.AddGroup(B_HORIZONTAL, 4.0f)
 			.Add(fAddressInput = new BTextControl("addrInput",
 			"Target Address:", "",
 			new BMessage(MSG_INSPECT_ADDRESS)))
+			.Add(fPreviousBlockButton = new BButton("navPrevious", "<",
+				new BMessage(MSG_NAVIGATE_PREVIOUS_BLOCK)))
+			.Add(fNextBlockButton = new BButton("navNext", ">",
+				new BMessage(MSG_NAVIGATE_NEXT_BLOCK)))
+		.End()
 		.AddGroup(B_HORIZONTAL, 4.0f)
 			.Add(fHexMode = new BMenuField("outputStyle", "Hex Mode:",
 				hexMenu))
@@ -119,6 +133,10 @@ InspectorWindow::_Init()
 	scrollView->SetTarget(fMemoryView = MemoryView::Create());
 
 	fAddressInput->SetTarget(this);
+	fPreviousBlockButton->SetTarget(this);
+	fNextBlockButton->SetTarget(this);
+	fPreviousBlockButton->SetEnabled(false);
+	fNextBlockButton->SetEnabled(false);
 
 	hexMenu->SetLabelFromMarked(true);
 	hexMenu->SetTargetForItems(fMemoryView);
@@ -137,10 +155,13 @@ InspectorWindow::MessageReceived(BMessage* msg)
 {
 	switch (msg->what) {
 		case MSG_INSPECT_ADDRESS:
+		{
+			target_addr_t address = 0;
+			bool addressValid = false;
+			if (msg->FindUInt64("address", &address) != B_OK)
 			{
 				ExpressionParser parser;
 				parser.SetSupportHexInput(true);
-			target_addr_t address = 0;
 				const char* addressExpression = fAddressInput->Text();
 				BString errorMessage;
 				try {
@@ -158,7 +179,13 @@ InspectorWindow::MessageReceived(BMessage* msg)
 						errorMessage.String(), "Close");
 					if (alert != NULL)
 						alert->Go();
+				} else
+					addressValid = true;
 			} else {
+				addressValid = true;
+			}
+
+			if (addressValid) {
 				if (fCurrentBlock != NULL
 					&& !fCurrentBlock->Contains(address)) {
 					fCurrentBlock->ReleaseReference();
@@ -177,6 +204,31 @@ InspectorWindow::MessageReceived(BMessage* msg)
 			}
 			break;
 		}
+		case MSG_NAVIGATE_PREVIOUS_BLOCK:
+		case MSG_NAVIGATE_NEXT_BLOCK:
+		{
+			if (fCurrentBlock != NULL)
+			{
+				target_addr_t address = fCurrentBlock->BaseAddress();
+				if (msg->what == MSG_NAVIGATE_PREVIOUS_BLOCK)
+					address -= fCurrentBlock->Size();
+				else
+					address += fCurrentBlock->Size();
+
+				BMessage setMessage(MSG_INSPECT_ADDRESS);
+				setMessage.AddUInt64("address", address);
+				PostMessage(&setMessage);
+			}
+			break;
+		}
+		{
+			break;
+		}
+		default:
+		{
+			BWindow::MessageReceived(msg);
+			break;
+		}
 	}
 }
 
@@ -192,6 +244,11 @@ InspectorWindow::QuitRequested()
 void
 InspectorWindow::MemoryBlockRetrieved(TeamMemoryBlock* block)
 {
+	BAutolock lock(this);
+	if (lock.IsLocked()) {
 		fCurrentBlock = block;
 		fMemoryView->SetTargetAddress(block, fCurrentAddress);
+		fPreviousBlockButton->SetEnabled(true);
+		fNextBlockButton->SetEnabled(true);
+	}
 }

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

@@ -45,6 +45,8 @@ private:
 	BMenuField*					fHexMode;
 	BMenuField*					fTextMode;
 	MemoryView*					fMemoryView;
+	BButton*					fPreviousBlockButton;
+	BButton*					fNextBlockButton;
 	TeamMemoryBlock*			fCurrentBlock;
 	target_addr_t				fCurrentAddress;
 	::Team*						fTeam;

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

@@ -163,11 +163,11 @@ MemoryView::Draw(BRect rect)
 		PopState();
 
 		if (fHexMode != HexModeNone) {
-			if (currentAddress + (currentBlocksPerLine * hexBlockSize)
+			if (currentAddress + (currentBlocksPerLine * blockByteSize)
 				> maxAddress) {
 				currentCharsPerLine = maxAddress - currentAddress;
 				currentBlocksPerLine = currentCharsPerLine
-					/ hexBlockSize;
+					/ blockByteSize;
 			}
 
 			for (int32 j = 0; j < currentBlocksPerLine; j++) {