Keyboard Support
Telerik RichTextBox for Silverlight supports commands in a way that is similar to the commanding mechanism in WPF. It is only natural that some of these commands be triggered on key combinations. There are default key-bindings defined for the most widely used commands.
Note that the browser could handle some of the shortcuts and some of them cannot be even enabled. RadRichTextBox is not capable of modifying this behavior as it is up to the browser.
| Action | Hotkey |
|---|---|
| Open new document | Ctrl+N |
| Open existing document | Ctrl+O |
| Save | Ctrl+S |
| Ctrl+P | |
| Copy | Ctrl+C |
| Paste | Ctrl+V |
| Cut | Ctrl+X |
| Delete | Delete |
| Delete previous symbol | Back, Ctrl+Back, Shift+Back |
| Undo | Ctrl+Z |
| Redo | Ctrl+Y |
| InsertLineBreak | Shift+Enter |
| InsertPageBreak | Ctrl+Enter |
| InsertColumnBreak | Ctrl+Enter, Shift+Enter |
| ToggleBold | Ctrl+B, Ctrl+Shift+B |
| ToggleItalic | Ctrl+I, Ctrl+Shift+I |
| ToggleSuperscript | Ctrl+'+' |
| ToggleSubscript | Ctrl+Shift+'+' |
| ToggleUnderline | Ctrl+U |
| ToggleFormattingSymbols | Ctrl+D8, Shift+D8 |
| ClearFormatting | Ctrl+Space |
| CopyFormatting | Ctrl+Shift+C |
| PasteFormatting | Ctrl+Shift+V |
| CancelFormatPainter or ExitHeaderFooterEditMode, depending on the current editing context | Esc |
| ChangeTextAlignment with parameter RadTextAlignment.Justify | Ctrl+J |
| ChangeTextAlignment with parameter RadTextAlignment.Right | Ctrl+R |
| ChangeTextAlignment with parameter RadTextAlignment.Left | Ctrl+L |
| ChangeTextAlignment with parameter RadTextAlignment.Center | Ctrl+E |
| TabForward | Tab |
| TabBackward | Shift+Tab |
| InsertText with parameter "\t" | Ctrl+Tab |
| Insert non-breaking space | Ctrl+Space |
| SelectAll | Ctrl+A |
| MoveCaret with parameter MoveCaretDirections.Previous | Left Arrow |
| MoveCaret with parameter MoveCaretDirections.Next | Right Arrow |
| MoveCaret with parameter MoveCaretDirections.PreviousWord | Ctrl+Left Arrow |
| MoveCaret with parameter MoveCaretDirections.NextWord | Ctrl+Right Arrow |
| MoveCaret with parameter MoveCaretDirections.Up | Upper Arrow |
| MoveCaret with parameter MoveCaretDirections.Down | Down Arrow |
| MoveCaret with parameter MoveCaretDirections. ParagraphStart | Ctrl+Upper Arrow |
| MoveCaret with parameter MoveCaretDirections. ParagraphEnd | Ctrl+Down Arrow |
| MoveCaret with parameter MoveCaretDirections.Home | Home |
| MoveCaret with parameter MoveCaretDirections.DocumentStart. This moves the caret at the first position of the document. | Ctrl+Home |
| MoveCaret with parameter MoveCaretDirections.End | End |
| MoveCaret with parameter MoveCaretDirections.DocumentEnd | Ctrl+End |
| MoveCaret with parameter MoveCaretDirections.PageUp | PageUp |
| MoveCaret with parameter MoveCaretDirections.PageDown | PageDown |
| ShowSpellCheckingDialog | F7 |
| ShowFindReplaceDialog | Ctrl+F |
| ShowFontPropertiesDialog | Ctrl+D |
| ShowInsertHyperlinkDialog | Ctrl+K |
Now these key bindings can be overridden and customized to the liking of the user. What is more, new bindings can be added to both the Commands exposed through the RichTextBoxCommands class or to user-defined ones in a quite straight-forward way. This is how it can be done in XAML:
Example 1: Customize InputBindings
<telerik:RadRichTextBox Grid.Row="1" Name="editor">
<telerik:CommandManager.InputBindings>
<telerik:InputBindingCollection>
<!-- Bind Spell Checking to Ctrl+Shift+S -->
<telerik:KeyBinding Gesture="Ctrl+Shift+S" Command="RichTextBoxCommands.ShowSpellCheckingDialog"/>
<!-- Stop Toggle Bold on Ctrl+Shift+B -->
<telerik:KeyBinding Gesture="Ctrl+Shift+B"/>
<!-- Re-map Ctrl+Space from Clear Formating to ShowManageBookmarksDialog -->
<telerik:KeyBinding Gesture="Ctrl+Space" Command="RichTextBoxCommands.ShowManageBookmarksDialog"/>
</telerik:InputBindingCollection>
</telerik:CommandManager.InputBindings>
</telerik:RadRichTextBox>
You can check the Simulate Watermark SDK example which demonstrates how you can modify the InputBindings collection of RadRichTextBox in code-behind.
Sometimes overriding the key bindings does not provide sufficient support, as depending on the language and the keyboard, different ModifierKeys are registered. For example, pressing RightAlt causes Control and Alt to be sent as arguments to the PreviewKeyDown event. Thus, RightAlt+E triggers a formatting command for paragraph alignment instead of inputting the ę character. In that case, you can handle the PreviewEditorKeyDown event in the following way:
Example 6: Customizing the behavior of a keyboard combination
this.radRichTextBox.PreviewEditorKeyDown += (sender, args) =>
{
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Alt) && Keyboard.Modifiers.HasFlag(ModifierKeys.Control) && args.Key == Key.E)
{
args.SuppressDefaultAction = true;
args.OriginalArgs.Handled = true;
this.radRichTextBox.Insert("€");
}
};