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// DebugValueTooltipProvider.cs
//
// Authors: Lluis Sanchez Gual <lluis@novell.com>
// Jeffrey Stedfast <jeff@xamarin.com>
//
// Copyright (c) 2008 Novell, Inc (http://www.novell.com)
// Copyright (c) 2012 Xamarin Inc. (http://www.xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//
using System;
using System.Collections.Generic;
using Mono.TextEditor;
using MonoDevelop.Ide;
using MonoDevelop.Ide.Gui;
using MonoDevelop.Debugger;
using MonoDevelop.Components;
using Mono.Debugging.Client;
using TextEditor = Mono.TextEditor.TextEditor;
namespace MonoDevelop.SourceEditor
{
public class DebugValueTooltipProvider: TooltipProvider, IDisposable
{
Dictionary<string,ObjectValue> cachedValues = new Dictionary<string,ObjectValue> ();
DebugValueWindow tooltip;
public DebugValueTooltipProvider ()
{
DebuggingService.CurrentFrameChanged += CurrentFrameChanged;
DebuggingService.DebugSessionStarted += DebugSessionStarted;
}
void DebugSessionStarted (object sender, EventArgs e)
{
DebuggingService.DebuggerSession.TargetExited += TargetProcessExited;
}
void CurrentFrameChanged (object sender, EventArgs e)
{
// Clear the cached values every time the current frame changes
cachedValues.Clear ();
if (tooltip != null)
tooltip.Hide ();
}
void TargetProcessExited (object sender, EventArgs e)
{
if (tooltip != null) {
tooltip.Destroy ();
tooltip = null;
}
}
#region ITooltipProvider implementation
public override TooltipItem GetItem (TextEditor editor, int offset)
{
if (offset >= editor.Document.TextLength)
return null;
if (!DebuggingService.IsDebugging || DebuggingService.IsRunning)
return null;
StackFrame frame = DebuggingService.CurrentFrame;
if (frame == null)
return null;
var ed = (ExtensibleTextEditor) editor;
string expression = null;
int startOffset;
if (ed.IsSomethingSelected && offset >= ed.SelectionRange.Offset && offset <= ed.SelectionRange.EndOffset) {
startOffset = ed.SelectionRange.Offset;
expression = ed.SelectedText;
} else {
var doc = IdeApp.Workbench.ActiveDocument;
if (doc == null || doc.ParsedDocument == null)
return null;
var resolver = doc.GetContent<IDebuggerExpressionResolver> ();
var data = editor.GetTextEditorData ();
if (resolver != null) {
expression = resolver.ResolveExpression (data, doc, offset, out startOffset);
} else {
int endOffset = data.FindCurrentWordEnd (offset);
startOffset = data.FindCurrentWordStart (offset);
expression = data.GetTextAt (startOffset, endOffset - startOffset);
}
}
if (string.IsNullOrEmpty (expression))
return null;
ObjectValue val;
if (!cachedValues.TryGetValue (expression, out val)) {
var options = DebuggingService.DebuggerSession.EvaluationOptions.Clone ();
options.AllowMethodEvaluation = true;
options.AllowTargetInvoke = true;
val = frame.GetExpressionValue (expression, options);
cachedValues [expression] = val;
}
if (val == null || val.IsUnknown || val.IsNotSupported)
return null;
val.Name = expression;
return new TooltipItem (val, startOffset, expression.Length);
}
public override Gtk.Window ShowTooltipWindow (TextEditor editor, int offset, Gdk.ModifierType modifierState, int mouseX, int mouseY, TooltipItem item)
{
var location = editor.OffsetToLocation (item.ItemSegment.Offset);
var point = editor.LocationToPoint (location);
int lineHeight = (int) editor.LineHeight;
int y = point.Y;
// find the top of the line that the mouse is hovering over
while (y + lineHeight < mouseY)
y += lineHeight;
var caret = new Gdk.Rectangle (mouseX, y, 1, lineHeight);
tooltip = new DebugValueWindow (editor, offset, DebuggingService.CurrentFrame, (ObjectValue) item.Item, null);
tooltip.ShowPopup (editor, caret, PopupPosition.TopLeft);
return tooltip;
}
public override bool IsInteractive (TextEditor editor, Gtk.Window tipWindow)
{
return DebuggingService.IsDebugging;
}
#endregion
#region IDisposable implementation
public void Dispose ()
{
DebuggingService.CurrentFrameChanged -= CurrentFrameChanged;
DebuggingService.DebugSessionStarted -= DebugSessionStarted;
}
#endregion
}
}
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