internal string GetExpressionEditorType(string localSetting, object root, FrameworkName targetFramework)
{
string expressionEditorType = null;
if (targetFramework.Is45OrHigher())
{
//1) check local setting of ETB
if (expressionEditorType == null)
{
expressionEditorType = localSetting;
}
//2) check global setting on root object of the XAML
if (expressionEditorType == null && root != null)
{
expressionEditorType = ExpressionEditor.GetExpressionActivityEditor(root);
}
//3) for all the other cases, always load VB editor for backward compatibility
if (expressionEditorType == null)
{
expressionEditorType = VisualBasicEditor.ExpressionLanguageName;
}
}
else
{
//When the targeting framework is less than 4.5, always load VB editor
expressionEditorType = VisualBasicEditor.ExpressionLanguageName;
}
return(expressionEditorType);
}
protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e)
{
switch (e.Property.Name)
{
case "ExpressionActivityEditor":
ExpressionEditor.ValidateExpressionActivityEditorName((string)e.NewValue);
break;
case "HintText":
if (!this.isHintTextSetInternally)
{
this.HintTextSetbyUser = (string)e.NewValue;
}
break;
case "InternalHintText":
this.isHintTextSetInternally = true;
this.HintText = this.InternalHintText;
this.isHintTextSetInternally = false;
break;
}
base.OnPropertyChanged(e);
}
internal void InitializeEditor(ExpressionActivityEditor editor, ExpressionTextBox expressionTextBox)
{
if (editor != null)
{
expressionTextBox.InitializeHintText(editor.HintText);
expressionTextBox.InternalHintText = expressionTextBox.HintText;
SetBinding("InternalHintText", ExpressionActivityEditor.HintTextProperty, editor, expressionTextBox, BindingMode.TwoWay);
SetBinding("IsSupportedExpression", ExpressionActivityEditor.IsSupportedExpressionProperty, editor, expressionTextBox, BindingMode.OneWayToSource, null);
SetBinding("HorizontalScrollBarVisibility", ExpressionActivityEditor.HorizontalScrollBarVisibilityProperty, editor, expressionTextBox);
SetBinding("VerticalScrollBarVisibility", ExpressionActivityEditor.VerticalScrollBarVisibilityProperty, editor, expressionTextBox);
SetBinding("AcceptsReturn", ExpressionActivityEditor.AcceptsReturnProperty, editor, expressionTextBox);
SetBinding("AcceptsTab", ExpressionActivityEditor.AcceptsTabProperty, editor, expressionTextBox);
SetBinding("Expression", ExpressionActivityEditor.ExpressionProperty, editor, expressionTextBox, BindingMode.TwoWay, new Collection<ValidationRule> { new ExpressionValidationRule(expressionTextBox) });
SetBinding("ExpressionType", ExpressionActivityEditor.ExpressionTypeProperty, editor, expressionTextBox);
SetBinding("OwnerActivity", ExpressionActivityEditor.OwnerActivityProperty, editor, expressionTextBox);
SetBinding("UseLocationExpression", ExpressionActivityEditor.UseLocationExpressionProperty, editor, expressionTextBox);
SetBinding("PathToArgument", ExpressionActivityEditor.PathToArgumentProperty, editor, expressionTextBox);
SetBinding("IsReadOnly", ExpressionActivityEditor.IsReadOnlyProperty, editor, expressionTextBox);
SetBinding("ExplicitCommit", ExpressionActivityEditor.ExplicitCommitProperty, editor, expressionTextBox);
SetBinding("ClipToBounds", ExpressionActivityEditor.ClipToBoundsProperty, editor, expressionTextBox);
TextualExpressionEditor textEditor = editor as TextualExpressionEditor;
if (textEditor != null)
{
SetBinding("MaxLines", TextualExpressionEditor.MaxLinesProperty, textEditor, expressionTextBox);
SetBinding("MinLines", TextualExpressionEditor.MinLinesProperty, textEditor, expressionTextBox);
SetBinding("DefaultValue", TextualExpressionEditor.DefaultValueProperty, textEditor, expressionTextBox);
}
SetBinding("IsIndependentExpression", ExpressionActivityEditor.IsIndependentExpressionProperty, editor, expressionTextBox);
}
}
internal IExpressionEditorService GetExpressionService(ExpressionActivityEditor editor)
{
TextualExpressionEditor textualEditor = editor as TextualExpressionEditor;
if (textualEditor != null)
{
return textualEditor.ExpressionEditorService;
}
else
{
return null;
}
}
internal bool TryCreateEditor(string expressionEditorName, out ExpressionActivityEditor editorInstance)
{
editorInstance = null;
if (expressionEditorName == null)
{
throw FxTrace.Exception.AsError(new ArgumentNullException(expressionEditorName));
}
if (!ExpressionEditorTypeTable.Keys.Contains(expressionEditorName))
{
return false;
}
Type expressionEditorType = ExpressionEditorTypeTable[expressionEditorName];
editorInstance = Activator.CreateInstance(expressionEditorType) as ExpressionActivityEditor;
return true;
}
void LoadInnerControl(string editorName)
{
if (editorName != this.currentEditorName)
{
ExpressionActivityEditor newEditor;
if (this.ViewModel.TryCreateEditor(editorName, out newEditor))
{
if ((this.IsInlinePropertyEditor) && !(newEditor is TextualExpressionEditor))
{
InitializeHintText(null);
this.editor = null;
this.currentEditorName = null;
this.Content = null;
this.ContentTemplate = this.FindResource("disabledInlineEditingTemplate") as DataTemplate;
}
else
{
this.currentEditorName = editorName;
this.editor = newEditor;
this.Content = this.editor;
this.ContentTemplate = null;
if (this.IsLoaded)
{
this.InitializeChildEditor();
}
}
}
else
{
this.UnsupportedEditorMessage = string.Format(CultureInfo.CurrentUICulture, SR.NonRegisteredExpressionEditor, editorName);
InitializeHintText(null);
this.editor = null;
this.currentEditorName = null;
this.Content = null;
this.ContentTemplate = this.FindResource("unsupportedEditorTemplate") as DataTemplate;
}
}
}
