Added some error messages, worked on function and thread switching

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@259 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Pads/CallStackPad.cs

@@ -89,8 +89,14 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 			if (debuggerCore.IsPaused) {
 				Function f = (Function)(callStackList.SelectedItems[0].Tag);
 				if (f.HasSymbols) {
-					debuggerCore.CurrentFunction = f;
+					if (debuggerCore.CurrentThread != null) {
+						debuggerCore.CurrentThread.SetCurrentFunction(f);
+					}
+				} else {
+					MessageBox.Show("You can not switch to function without symbols", "Function switch");
 				}
+			} else {
+				MessageBox.Show("You can not switch functions while the debugger is running.", "Function switch");
 			}
 		}
 
@@ -112,7 +118,7 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 				foreach (Function f in debuggerCore.CurrentThread.Callstack) {
 					ListViewItem item = new ListViewItem(new string[] { f.Name, "" });
 					item.Tag = f;
-					item.ForeColor = f.Module.SymbolsLoaded ? Color.Black : Color.Gray;
+					item.ForeColor = f.HasSymbols ? Color.Black : Color.Gray;
 					callStackList.Items.Add(item);
 				}
 			}

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Pads/LocalVarPad.cs

@@ -115,8 +115,7 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 			if (debuggerCore.IsPaused) {
 				((VariableListItem)e.Item).PrepareForExpansion();
 			} else {
-				// TODO: Some message telling user that he can not explore variable since
+				MessageBox.Show("You can not explore variables while the debuggee is running.");
-				//       the debugger has been resumed. 
 				e.Cancel = true;
 			}
 		}

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Pads/RunningThreadsPad.cs

@@ -78,10 +78,10 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 		{
 			debuggerCore = debugger.DebuggerCore;
 
-			debuggerCore.ThreadStarted += new EventHandler<ThreadEventArgs>(AddThread);
-			debuggerCore.ThreadStateChanged += new EventHandler<ThreadEventArgs>(RefreshThread);
-			debuggerCore.ThreadExited += new EventHandler<ThreadEventArgs>(RemoveThread);
 			debuggerCore.DebuggingPaused += new EventHandler<DebuggingPausedEventArgs>(OnDebuggingPaused);
+			debuggerCore.ThreadStarted += new EventHandler<ThreadEventArgs>(ThreadStarted);
+			debuggerCore.ThreadStateChanged += new EventHandler<ThreadEventArgs>(ThreadStateChanged);
+			debuggerCore.ThreadExited += new EventHandler<ThreadEventArgs>(ThreadExited);
 
 			RefreshList();
 		}
@@ -94,11 +94,22 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 			priority.Text    = "Priority";
 			breaked.Text     = "Breaked";
 		}
+		
+		void RefreshList()
+		{
+			foreach (Thread t in debuggerCore.Threads) {
+				RefreshThread(t);
+			}
+		}
 
 		void RunningThreadsListItemActivate(object sender, EventArgs e)
 		{
 			if (debuggerCore.IsPaused) {
-				debuggerCore.CurrentThread = (Thread)(runningThreadsList.SelectedItems[0].Tag);
+				if (debuggerCore.CurrentProcess != null) {
+					debuggerCore.CurrentProcess.SetCurrentThread((Thread)(runningThreadsList.SelectedItems[0].Tag));
+				}
+			} else {
+				MessageBox.Show("You can not switch threads while the debugger is running.", "Thread switch");
 			}
 		}
 
@@ -107,50 +118,60 @@ namespace ICSharpCode.SharpDevelop.Gui.Pads
 			RefreshList();
 		}
 
-		private void AddThread(object sender, ThreadEventArgs e) 
+		void ThreadStarted(object sender, ThreadEventArgs e)
 		{
-			runningThreadsList.Items.Add(new ListViewItem(e.Thread.ID.ToString()));
+			AddThread(e.Thread);
-			RefreshThread(this, e);
 		}
 
-		private void RefreshThread(object sender, ThreadEventArgs e) 
+		void ThreadStateChanged(object sender, ThreadEventArgs e)
+		{
+			RefreshThread(e.Thread);
+		}
+		
+		void ThreadExited(object sender, ThreadEventArgs e)
+		{
+			RemoveThread(e.Thread);
+		}
+		
+		
+		void AddThread(Thread thread)
+		{
+			runningThreadsList.Items.Add(new ListViewItem(thread.ID.ToString()));
+			RefreshThread(thread);
+		}
+		
+		void RefreshThread(Thread thread)
 		{
 			foreach (ListViewItem item in runningThreadsList.Items) {
-				if (e.Thread.ID.ToString() == item.Text) {
+				if (thread.ID.ToString() == item.Text) {
 					item.SubItems.Clear();
-					item.Text = e.Thread.ID.ToString();
+					item.Text = thread.ID.ToString();
-					item.Tag = e.Thread;
+					item.Tag = thread;
-					item.SubItems.Add(e.Thread.Name);
+					item.SubItems.Add(thread.Name);
 					Function location;
-					location = e.Thread.LastFunctionWithLoadedSymbols;
+					location = thread.LastFunctionWithLoadedSymbols;
 					if (location == null) {
-						location = e.Thread.LastFunction;
+						location = thread.LastFunction;
 					}
 					if (location != null) {
 						item.SubItems.Add(location.Name);
 					} else {
 						item.SubItems.Add("N/A");
 					}
-					item.SubItems.Add(e.Thread.Priority.ToString());
+					item.SubItems.Add(thread.Priority.ToString());
-					item.SubItems.Add(e.Thread.Suspended.ToString());
+					item.SubItems.Add(thread.Suspended.ToString());
                     return;
 				}
             }
-            AddThread(this, e);
+            AddThread(thread);
 		}
-
+		
-		private void RemoveThread(object sender, ThreadEventArgs e) 
+		void RemoveThread(Thread thread)
 		{
 			foreach (ListViewItem item in runningThreadsList.Items) {
-				if (e.Thread.ID.ToString() == item.Text)
+				if (thread.ID.ToString() == item.Text) {
 					item.Remove();
-			}
+				}
-		}
-
-		private void RefreshList()
-		{
-			foreach (Thread t in debuggerCore.Threads) {
-				RefreshThread(this, new ThreadEventArgs(debuggerCore, t));
 			}
 		}
 	}

src/AddIns/Misc/Debugger/Debugger.AddIn/Project/Src/Service/WindowsDebugger.cs

@@ -155,17 +155,29 @@ namespace ICSharpCode.SharpDevelop.Services
 
 		public void StepInto()
 		{
-			debugger.StepInto();
+			if (debugger.CurrentFunction == null) {
+				MessageBox.Show("You can not step because there is no function selected to be stepped","Step into");
+			} else {
+				debugger.StepInto();
+			}
 		}
 		
 		public void StepOver()
 		{
-			debugger.StepOver();
+			if (debugger.CurrentFunction == null) {
+				MessageBox.Show("You can not step because there is no function selected to be stepped","Step over");
+			} else {
+				debugger.StepOver();
+			}
 		}
 		
 		public void StepOut()
 		{
-			debugger.StepOut();
+			if (debugger.CurrentFunction == null) {
+				MessageBox.Show("You can not step because there is no function selected to be stepped","Step out");
+			} else {
+				debugger.StepOut();
+			}
 		}
 
 		public bool SupportsStepping {

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Debugger/Internal/ManagedCallback.cs

@@ -78,6 +78,7 @@ namespace DebuggerLibrary
 		{
 			handlingCallback = true;
 			debugger.TraceMessage("Callback: " + name);
+			debugger.AssertRunning();
 		}
 		
 		void ExitCallback_Continue()
@@ -97,7 +98,7 @@ namespace DebuggerLibrary
 
 			handlingCallback = false;
 
-			debugger.Pause(reason, callingProcess, callingThread);
+			debugger.Pause(reason, callingProcess, callingThread, null);
 			
 			callingThread = null;
 			callingProcess = null;
@@ -337,7 +338,7 @@ namespace DebuggerLibrary
 			debugger.RemoveThread(thread);
 
 			if (thread.Process.CurrentThread == thread) {
-				thread.Process.SetCurrentThread(null);
+				thread.Process.CurrentThread = null;
 			}
 
 			ExitCallback_Continue();
@@ -358,10 +359,6 @@ namespace DebuggerLibrary
 
 			debugger.RemoveProcess(process);
 
-			if (debugger.CurrentProcess == process) {
-				debugger.CurrentProcess = null;
-			}
-
 			if (debugger.Processes.Count == 0) {
 				debugger.ResetEnvironment();
 			}

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Debugger/NDebugger-StateControl.cs

@@ -64,9 +64,6 @@ namespace DebuggerLibrary
 					return currentProcess;
 				}
 			}
-			set {
-				currentProcess = value;
-			}
 		}
 		
 		public Thread CurrentThread {
@@ -75,11 +72,6 @@ namespace DebuggerLibrary
 				if (CurrentProcess == null) return null;
 				return CurrentProcess.CurrentThread;
 			}
-			set {
-				if (CurrentProcess != null) {
-					CurrentProcess.CurrentThread = value;
-				}
-			}
 		}
 		
 		public Function CurrentFunction {
@@ -91,11 +83,6 @@ namespace DebuggerLibrary
 					return CurrentThread.CurrentFunction;
 				}
 			}
-			set {
-				if (CurrentThread != null) {
-					CurrentThread.CurrentFunction = value;
-				}
-			}
 		}
 		
 		public void AssertPaused()
@@ -124,13 +111,13 @@ namespace DebuggerLibrary
 			}
 		}
 		
-		internal void Pause(PausedReason reason, Process process, Thread thread)
+		internal void Pause(PausedReason reason, Process process, Thread thread, Function function)
 		{
 			if (IsPaused) {
 				throw new DebuggerException("Already paused");
 			}
 			isPaused = true;
-			SetUpEnvironment(process, thread);
+			SetUpEnvironment(process, thread, function);
 			OnDebuggingPaused(reason);
 		}
 		
@@ -138,8 +125,9 @@ namespace DebuggerLibrary
 		{
 			Process process = CurrentProcess;
 			Thread thread = CurrentThread;
+			Function function = CurrentFunction;
 			Resume();
-			Pause(reason, process, thread);
+			Pause(reason, process, thread, function);
 		}
 		
 		internal void Resume()
@@ -151,7 +139,7 @@ namespace DebuggerLibrary
 			isPaused = false;
 		}
 		
-		void SetUpEnvironment(Process process, Thread thread)
+		void SetUpEnvironment(Process process, Thread thread, Function function)
 		{
 			CleanEnvironment();
 				
@@ -166,18 +154,22 @@ namespace DebuggerLibrary
 			// Set the CurrentThread
 			if (process != null) {
 				if (thread != null) {
-					process.SetCurrentThread(thread);
+					process.CurrentThread = thread;
 				} else {
 					IList<Thread> threads = process.Threads;
 					if (threads.Count > 0) {
-						process.SetCurrentThread(threads[0]);
+						process.CurrentThread = threads[0];
 					} else {
-						process.SetCurrentThread(null);
+						process.CurrentThread = null;
 					}
 				}
 			}
 			
-			// CurrentFunctions in threads are fetched on request
+			// Set the CurrentFunction
+			// Other CurrentFunctions in threads are fetched on request
+			if (thread != null && function != null) {
+				thread.CurrentFunction = function;
+			}
 		}
 		
 		void CleanEnvironment()
@@ -186,12 +178,12 @@ namespace DebuggerLibrary
 			// they are disponsed between callbacks and
 			// they need to be regenerated
 			foreach(Thread t in Threads) {
-				t.ClearCurrentFunction();
+				t.CurrentFunction = null;
 			}
 			
 			// Clear current thread
 			if (currentProcess != null) {
-				currentProcess.SetCurrentThread(null);
+				currentProcess.CurrentThread = null;
 			}
 			// Clear current process
 			currentProcess = null;

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Threads/Process.cs

@@ -40,15 +40,16 @@ namespace DebuggerLibrary
 			get {
 				return currentThread;
 			}
-			set	{
+			internal set {
 				currentThread = value;
-				debugger.FakePause(PausedReason.CurrentThreadChanged);
 			}
 		}
 		
-		internal void SetCurrentThread(Thread thread)
+		public void SetCurrentThread(Thread thread)
 		{
-			currentThread = thread;
+			CurrentThread = thread;
+			
+			debugger.FakePause(PausedReason.CurrentThreadChanged);
 		}
 
 		public IList<Thread> Threads {
@@ -123,7 +124,7 @@ namespace DebuggerLibrary
             corProcess.Stop(5000); // TODO: Hardcoded value
 
 			isProcessRunning = false;
-			debugger.Pause(PausedReason.Break, this, null);
+			debugger.Pause(PausedReason.Break, this, null, null);
 		}
 
 		public void Continue()

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Threads/Thread.cs

@@ -239,20 +239,20 @@ namespace DebuggerLibrary
 					return null;
 				}
 			}
-			set {
+			internal set {
 				if (value != null && !value.HasSymbols) {
 					throw new DebuggerException("CurrentFunction must have symbols");
 				}
 				
 				currentFunction = value;
-				
-				debugger.FakePause(PausedReason.CurrentFunctionChanged);
 			}
 		}
 		
-		internal void ClearCurrentFunction()
+		public void SetCurrentFunction(Function function)
 		{
-			currentFunction = null;
+			CurrentFunction = function;
+			
+			debugger.FakePause(PausedReason.CurrentFunctionChanged);
 		}
 
 		public Function LastFunctionWithLoadedSymbols {