/// <summary>
        /// Return true to handle the keypress, return false to let the text area handle the keypress
        /// </summary>
        bool TextAreaKeyEventHandler(char key)
        {
            if (!WorkbenchServiceFactory.Workbench.UserOptions.AllowCodeCompletion || !VisualPABCSingleton.MainForm.VisualEnvironmentCompiler.compilerLoaded) return false;
            if (CodeCompletion.CodeCompletionController.CurrentParser == null) return false;
            if (codeCompletionWindow != null)
            {
                // If completion window is open and wants to handle the key, don't let the text area
                // handle it
                if (codeCompletionWindow.ProcessKeyEvent(key))
                    return true;
            }
            else
            {
                PABCNETCodeCompletionWindow ccw = CodeCompletionNamesOnlyInModuleAction.comp_windows[editor.ActiveTextAreaControl.TextArea] as PABCNETCodeCompletionWindow;

                if (ccw != null && CodeCompletionNamesOnlyInModuleAction.is_begin)
                {
                    CodeCompletionNamesOnlyInModuleAction.is_begin = false;
                    if (key != ' ')
                        ccw.ProcessKeyEvent(key);
                    else
                        ccw.ProcessKeyEvent('_');
                }
                else if (ccw != null && ccw.ProcessKeyEvent(key))
                    return true;
            }
            if (key == '.')
            {
                if (CodeCompletion.CodeCompletionController.CurrentParser == null) return false;
                if (WorkbenchServiceFactory.Workbench.UserOptions.CodeCompletionDot)
                {
                    completionDataProvider = new CodeCompletionProvider();

                    codeCompletionWindow = PABCNETCodeCompletionWindow.ShowCompletionWindow(
                        VisualPABCSingleton.MainForm,					// The parent window for the completion window
                        editor, 					// The text editor to show the window for
                        editor.FileName,		// Filename - will be passed back to the provider
                        completionDataProvider,		// Provider to get the list of possible completions
                        key,							// Key pressed - will be passed to the provider
                        true,
                        true,
                        PascalABCCompiler.Parsers.KeywordKind.None
                    );
                    CodeCompletionNamesOnlyInModuleAction.is_begin = true;
                    CodeCompletionNamesOnlyInModuleAction.comp_windows[editor.ActiveTextAreaControl.TextArea] = codeCompletionWindow;
                    if (codeCompletionWindow != null)
                        codeCompletionWindow.Closed += new EventHandler(CloseCodeCompletionWindow);
                }
            }
            else if (key == '(' || key == '[' || key == ',')
            {
                if (CodeCompletion.CodeCompletionController.CurrentParser == null) return false;
                if (VisualPABCSingleton.MainForm.UserOptions.CodeCompletionParams)
                {
                    ICSharpCode.TextEditor.Gui.InsightWindow.IInsightDataProvider idp = new DefaultInsightDataProvider(-1, false, key);
                    if (insightWindow == null || insightWindow.InsightProviderStackLength == 0)
                    {
                        insightWindow = new PABCNETInsightWindow(VisualPABCSingleton.MainForm, editor);
                        insightWindow.Font = new Font(Constants.CompletionInsightWindowFontName, insightWindow.Font.Size);
                        insightWindow.Closed += new EventHandler(CloseInsightWindow);
                    }
                    else
                    {
                        (idp as DefaultInsightDataProvider).defaultIndex = insightWindow.GetCurrentData();
                        (idp as DefaultInsightDataProvider).cur_param_num = (insightWindow.GetInsightProvider() as DefaultInsightDataProvider).param_count;

                    }
                    insightWindow.AddInsightDataProvider(idp, editor.FileName);
                    insightWindow.ShowInsightWindow();
                }
            }
            else if (key == ' ')
            {
                if (CodeCompletion.CodeCompletionController.CurrentParser == null) return false;
                if (VisualPABCSingleton.MainForm.UserOptions.CodeCompletionDot)
                {
                    PascalABCCompiler.Parsers.KeywordKind keyw = KeywordChecker.TestForKeyword(editor.Document.TextContent, editor.ActiveTextAreaControl.TextArea.Caret.Offset - 1);
                    if (keyw == PascalABCCompiler.Parsers.KeywordKind.New || VisualPABCSingleton.MainForm.UserOptions.EnableSmartIntellisense && keyw == PascalABCCompiler.Parsers.KeywordKind.Uses)
                    {
                        completionDataProvider = new CodeCompletionProvider();
                        codeCompletionWindow = PABCNETCodeCompletionWindow.ShowCompletionWindow(
                            VisualPABCSingleton.MainForm,					// The parent window for the completion window
                            editor, 					// The text editor to show the window for
                            editor.FileName,		// Filename - will be passed back to the provider
                            completionDataProvider,		// Provider to get the list of possible completions
                            ' ',							// Key pressed - will be passed to the provider
                            true,
                            false,
                            keyw
                        );
                        CodeCompletionNamesOnlyInModuleAction.comp_windows[editor.ActiveTextAreaControl.TextArea] = codeCompletionWindow;
                        if (codeCompletionWindow != null)
                            codeCompletionWindow.Closed += new EventHandler(CloseCodeCompletionWindow);
                        //return true;
                    }
                }
            }
            else if (key == '\n')
            {
                if (VisualPABCSingleton.MainForm.UserOptions.AllowCodeCompletion && CodeCompletion.CodeCompletionController.CurrentParser != null)
                {
                    try
                    {
                        CodeCompletion.DomConverter dconv = (CodeCompletion.DomConverter)CodeCompletion.CodeCompletionController.comp_modules[editor.FileName];
                        if (dconv != null)
                        {
                            CodeCompletion.SymScope ss = dconv.FindScopeByLocation(editor.ActiveTextAreaControl.TextArea.Caret.Line + 1, editor.ActiveTextAreaControl.TextArea.Caret.Column + 1);
                            ss.IncreaseEndLine();
                        }
                    }
                    catch
                    {

                    }
                }
            }
            else if (codeCompletionWindow == null && VisualPABCSingleton.MainForm.UserOptions.EnableSmartIntellisense && (char.IsLetter(key) || key == '_'))
            {
                if (VisualPABCSingleton.MainForm.UserOptions.CodeCompletionDot)
                {
                    if (CodeCompletion.CodeCompletionController.CurrentParser == null) return false;
                    PascalABCCompiler.Parsers.KeywordKind keyw = KeywordChecker.TestForKeyword(editor.Document.TextContent, editor.ActiveTextAreaControl.TextArea.Caret.Offset - 1);
                    if (CodeCompletion.CodeCompletionController.CurrentParser.LanguageInformation.IsDefinitionIdentifierAfterKeyword(keyw))
                        return false;

                    if (editor.ActiveTextAreaControl.TextArea.Caret.Offset > 0 && (char.IsLetterOrDigit(editor.Document.TextContent[editor.ActiveTextAreaControl.TextArea.Caret.Offset - 1]) || editor.Document.TextContent[editor.ActiveTextAreaControl.TextArea.Caret.Offset - 1] == '_'))
                        return false;
                    completionDataProvider = new CodeCompletionProvider();
                    codeCompletionWindow = PABCNETCodeCompletionWindow.ShowCompletionWindowWithFirstChar(
                        VisualPABCSingleton.MainForm,					// The parent window for the completion window
                        editor, 					// The text editor to show the window for
                        editor.FileName,		// Filename - will be passed back to the provider
                        completionDataProvider,		// Provider to get the list of possible completions
                        key,						// Key pressed - will be passed to the provider
                        keyw
                    );
                    CodeCompletionNamesOnlyInModuleAction.comp_windows[editor.ActiveTextAreaControl.TextArea] = codeCompletionWindow;
                    if (codeCompletionWindow != null)
                        codeCompletionWindow.Closed += new EventHandler(CloseCodeCompletionWindow);

                }
            }
            /*else if (codeCompletionWindow == null && key == '\n')
            {
            	if (mainForm.UserOptions.AllowCodeFormatting)
                {
            		if (CodeCompletion.CodeCompletionController.currentParser == null) return false;
            		string bracket = CodeCompletion.CodeCompletionController.currentParser.LanguageInformation.GetBodyStartBracket();
            		string end_bracket = CodeCompletion.CodeCompletionController.currentParser.LanguageInformation.GetBodyEndBracket();
            		if (bracket != null)
            		{
            			int i = editor.ActiveTextAreaControl.TextArea.Caret.Offset-1;
            			int j = bracket.Length-1;
            			bool eq=true;
            			while (i >= 0 && j >= 0)
            			{
            				if (editor.Document.TextContent[i] != bracket[j])
            				{
            					eq = false;
            					break;
            				}
            				i--; j--;
            			}
            			if (eq && j<0)
            			{
            				TextArea textArea = editor.ActiveTextAreaControl.TextArea;
            				int col = textArea.Caret.Column-bracket.Length;
							textArea.InsertString("\n\n"+end_bracket);
							textArea.Caret.Column = 0;
							textArea.Caret.Line = textArea.Caret.Line-1;
							textArea.Caret.Column = VisualPABCSingleton.MainForm.UserOptions.CursorTabCount+col;
							return true;
            			}
            		}
            	}
            }*/

            return false;
        }
 void CloseInsightWindow(object sender, EventArgs e)
 {
     if (insightWindow != null)
     {
         insightWindow.Closed -= new EventHandler(CloseInsightWindow);
         insightWindow.Dispose();
         insightWindow = null;
     }
 }