dynamic help: Forms designer support added; some more improvements

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@470 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/HtmlHelp2/Project/src/BaseControls/DynamicHelpPad.cs

@@ -35,9 +35,11 @@ namespace HtmlHelp2
 	public class HtmlHelp2DynamicHelpPad : AbstractPadContent
 	{
 		protected HtmlHelp2DynamicHelpBrowserControl dynamicHelpBrowser;
-		private int internalIndex = 0;
+		private int internalIndex          = 0;
 		private string lastDynamicHelpWord = String.Empty;
 		private string lastSpecialHelpWord = String.Empty;
+		private string lastKeywordSearch   = String.Empty;
+		private string debugPreElement     = String.Empty;
 
 		public override Control Control
 		{
@@ -62,6 +64,8 @@ namespace HtmlHelp2
 		{
 			dynamicHelpBrowser                      = new HtmlHelp2DynamicHelpBrowserControl();
 			ParserService.ParserUpdateStepFinished += UpdateTick;
+			PropertyPad.SelectedObjectChanged      += new EventHandler(this.FormsDesignerSelectedObjectChanged);
+			PropertyPad.SelectedGridItemChanged    += new SelectedGridItemChangedEventHandler(this.FormsDesignerSelectedGridItemChanged);
 		}
 
 		#region WebBrowser Scripting
@@ -69,7 +73,8 @@ namespace HtmlHelp2
 		                                 string specialDynamicHelpString,
 		                                 string expectedLanguage)
 		{
-			if(!HtmlHelp2Environment.IsReady || HtmlHelp2Environment.DynamicHelpIsBusy) {
+			if(!HtmlHelp2Environment.IsReady || HtmlHelp2Environment.DynamicHelpIsBusy)
+			{
 				return;
 			}
 
@@ -81,62 +86,64 @@ namespace HtmlHelp2
 			try
 			{
 				this.RemoveAllChildren();
+				this.debugPreElement     = "--- Dynamic Help Debug ---<br>";
 
-				IHxTopicList topics        = null;
-				IHxTopicList specialTopics = null;
-				Cursor.Current             = Cursors.WaitCursor;
+				bool result1 = this.CallDynamicHelp(specialDynamicHelpString, expectedLanguage, false);
+				bool result2 = this.CallDynamicHelp(dynamicHelpString, expectedLanguage, false);
+				if(!result1 && !result2) this.CallDynamicHelp(this.lastKeywordSearch, expectedLanguage, true);
 
-				if(dynamicHelpString != "") topics               = HtmlHelp2Environment.GetMatchingTopicsForDynamicHelp(dynamicHelpString);
-				if(specialDynamicHelpString != "") specialTopics = HtmlHelp2Environment.GetMatchingTopicsForDynamicHelp(specialDynamicHelpString);
+				this.lastDynamicHelpWord = dynamicHelpString;
+				this.lastSpecialHelpWord = specialDynamicHelpString;
 
-				Cursor.Current             = Cursors.Default;
+				this.CreateDebugPre();
+			}
+			catch {}
+		}
 
-				try
-				{
-					if(specialTopics.Count > 0)
-					{
-						foreach(IHxTopic topic in specialTopics)
-						{
-							if(expectedLanguage == null ||
-							   expectedLanguage == "" ||
-							   topic.HasAttribute("DevLang", expectedLanguage))
-							{
-								this.BuildNewChild(topic.Location,
-								                   topic.get_Title(HxTopicGetTitleType.HxTopicGetRLTitle, HxTopicGetTitleDefVal.HxTopicGetTitleFileName),
-								                   topic.URL);
-							}
-						}
-					}
-				}
-				catch {}
+		private bool CallDynamicHelp(string searchTerm, string expectedLanguage, bool keywordSearch)
+		{
+			if(!HtmlHelp2Environment.IsReady || HtmlHelp2Environment.DynamicHelpIsBusy) return false;
+			bool result = false;
+
+			try
+			{
+				IHxTopicList topics      = null;
+				Cursor.Current           = Cursors.WaitCursor;
 
-				try
+				if(keywordSearch) topics = HtmlHelp2Environment.GetMatchingTopicsForKeywordSearch(searchTerm);
+				else topics              = HtmlHelp2Environment.GetMatchingTopicsForDynamicHelp(searchTerm);
+
+				Cursor.Current           = Cursors.Default;
+				if(topics.Count > 0)
 				{
-					if(topics.Count > 0)
+					this.debugPreElement += String.Format("{0} ({1}): {2} {3}<br>",
+					                                      searchTerm,
+					                                      (keywordSearch)?"Kwd":"DH",
+					                                      topics.Count.ToString(),
+					                                      (topics.Count == 1)?"topic":"topics");
+
+					result = true;
+
+					foreach(IHxTopic topic in topics)
 					{
-						foreach(IHxTopic topic in topics)
+						if(expectedLanguage == String.Empty ||
+						   topic.HasAttribute("DevLang", expectedLanguage))
 						{
-							if(expectedLanguage == null ||
-							   expectedLanguage == "" ||
-							   topic.HasAttribute("DevLang", expectedLanguage))
-							{
-								this.BuildNewChild(topic.Location,
-								                   topic.get_Title(HxTopicGetTitleType.HxTopicGetRLTitle, HxTopicGetTitleDefVal.HxTopicGetTitleFileName),
-								                   topic.URL);
-							}
+							this.BuildNewChild(topic.Location,
+							                   topic.get_Title(HxTopicGetTitleType.HxTopicGetRLTitle,
+							                                   HxTopicGetTitleDefVal.HxTopicGetTitleFileName),
+							                   topic.URL);
+							
 						}
 					}
 				}
-				catch {}
-
-				this.CreateDebugPre(dynamicHelpString, specialDynamicHelpString);
-
-				this.lastDynamicHelpWord = dynamicHelpString;
-				this.lastSpecialHelpWord = specialDynamicHelpString;
 			}
 			catch {}
+
+			return result;
 		}
 
+
 		private void RemoveAllChildren()
 		{
 			this.internalIndex = 0;
@@ -284,16 +291,15 @@ namespace HtmlHelp2
 		}
 
 
-		private void CreateDebugPre(string dynamicHelpString, string specialDynamicHelpString)
+		private void CreateDebugPre()
 		{
 			try
 			{
-				HtmlElement br  = dynamicHelpBrowser.CreateHtmlElement("br");
-				dynamicHelpBrowser.Document.Body.InsertAdjacentElement(HtmlElementInsertionOrientation.BeforeEnd, br);
+				dynamicHelpBrowser.Document.Body.InsertAdjacentElement(HtmlElementInsertionOrientation.BeforeEnd, this.CreateABreak());
+				dynamicHelpBrowser.Document.Body.InsertAdjacentElement(HtmlElementInsertionOrientation.BeforeEnd, this.CreateABreak());
 
 				HtmlElement pre = dynamicHelpBrowser.CreateHtmlElement("pre");
-				pre.InnerHtml   = String.Format("--- Dynamic Help Debug ---<br>" +
-				                                "{0}<br>{1}", dynamicHelpString, specialDynamicHelpString);
+				pre.InnerHtml   = this.debugPreElement;
 
 				dynamicHelpBrowser.InsertHtmlElement(HtmlElementInsertionOrientation.BeforeEnd, pre);
 			}
@@ -410,9 +416,50 @@ namespace HtmlHelp2
 			ExpressionResult expr = expressionFinder.FindFullExpression(content, caret.Offset);
 			if (expr.Expression == null) return null;
 
+			this.lastKeywordSearch = expr.Expression;
+
 			return ParserService.Resolve(expr, caret.Line, caret.Column, fileName, content);
 		}
 		#endregion
+
+		#region Dynamic Help for Forms Designer
+		private void FormsDesignerSelectedObjectChanged(object sender, EventArgs e)
+		{
+			this.CallDynamicHelpForFormsDesigner(PropertyPad.Grid.SelectedObject,
+			                                     PropertyPad.Grid.SelectedGridItem);
+		}
+
+		private void FormsDesignerSelectedGridItemChanged(object sender, SelectedGridItemChangedEventArgs e)
+		{
+			this.CallDynamicHelpForFormsDesigner(PropertyPad.Grid.SelectedObject,
+			                                     e.NewSelection);
+		}
+
+		private void CallDynamicHelpForFormsDesigner(object selectedObject, GridItem selectedItem)
+		{
+			if(selectedObject == null) return;
+			
+			try
+			{
+				string selectedObjectString = selectedObject.GetType().FullName;
+				string selectedItemString   = String.Empty;
+
+				if(selectedItem != null)
+				{
+					selectedItemString      = String.Format("{0}.{1}",
+					                                        selectedObjectString,
+					                                        selectedItem.Label);
+				}
+
+				WorkbenchSingleton.SafeThreadAsyncCall(this,
+				                                       "BuildDynamicHelpList",
+				                                       selectedObjectString,
+				                                       selectedItemString,
+				                                       "");
+			}
+			catch {}
+		}
+		#endregion
 	}
 
 	public class HtmlHelp2DynamicHelpBrowserControl : UserControl

src/AddIns/Misc/HtmlHelp2/Project/src/Service/HtmlHelp2Service.cs

@@ -293,6 +293,22 @@ namespace HtmlHelp2.Environment
 				dynamicHelpIsBusy   = false;
 			}
 		}
+
+		public static IHxTopicList GetMatchingTopicsForKeywordSearch(string searchTerm)
+		{
+			if(dynamicHelpIsBusy) return null;
+
+			try
+			{
+				dynamicHelpIsBusy   = true;
+				IHxTopicList topics = GetIndex(currentSelectedFilterQuery).GetTopicsFromString(searchTerm, 0);
+				return topics;
+			}
+			finally
+			{
+				dynamicHelpIsBusy   = false;
+			}
+		}
 		#endregion
 
 		#region Event Handling