The easiest way to create a command bar commanding UI for a rich text view is to use the NRichTextViewWithCommandBars widget or if you are not creating a cross-platform application - drop an NRichTextViewWithCommandBarsControl to a form/window using the Visual Studio Designer. You can then use the following approaches to modify the command bars:

1. Hiding Menus and Toolbars

To hide a command bar or a command bar item use the corresponding Get... method of the NRichTextViewWithCommandBars or NRichTextViewWithCommandBarsControl class and set its Visibility property to Collapsed:

• GetMainMenu - gets the main menu bar.  When you get the menu bar, you can use it's FindMenuDropDownByText method to get a specific menu drop down. Then if you want to hide a specific menu item from the drop down menu, you can use the Items.FindByText method of the menu item, but if the menu item does not contain sub menu items, it's better to use the RemoveCommands method discussed in the next section.
• GetTooBar - gets a toolbar with a given name.
• GetStatusBar - gets the status bar.

The following code snippet hides the "View" menu and the "View" toolbar:

// Hide the "View" menu drop down
nRichTextViewWithCommandBarsControl1.GetMainMenuBar().FindMenuDropDownByText(NRichTextCommandBarBuilder.MenuViewName).Visibility = ENVisibility.Collapsed;

// Hide the "View" toolbar
nRichTextViewWithCommandBarsControl1.GetToolBar(NRichTextCommandBarBuilder.ToolbarViewName).Visibility = ENVisibility.Collapsed;

2. Removing Commands

To remove all widgets associated with specific commands from the commanding UI, use the RemoveCommands method of the rich text view with command bars. For example, the code snippet below removes the Open command and hides the widgets associated with them from the File menu and also removes the page number command from the status bar:

NRichTextViewWithCommandBars richTextWithCommandBars = new NRichTextViewWithCommandBars();
richTextWithCommandBars.RemoveCommands(NRichTextView.OpenCommand, NRichTextView.PageNumberStatusBarCommand);

You can also create rich text command bars using the NRichTextCommandBarBuilder. This gives you greater flexibility and more ways to customize the NOV Rich Text command bars, including an option to add custom commands to the command bars:

NRichTextCommandBarBuilder commandBarBuilder = new NRichTextCommandBarBuilder();
NCommandUIHolder richTextWithCommandBars = commandBarBuilder.CreateUI(richTextView);

1. Modifying Builder Collections

If you want to remove a given toolbar or menu from the builders, you can easily do so by using the Remove method of the ToolBarBuilders and MenuDropDownBuilders collection of the rich text command bar builder respectively. You can get or remove builders by name.

The names of all rich text menu and toolbar builders are exposed as constants in the NRichTextCommandBarBuilder class. For example, to remove the "File" menu and the "Standard" toolbar of a command bars based rich text UI, you can use the following piece of code:

commandBarBuilder.MenuDropDownBuilders.Remove(NRichCommandBarBuilder.MenuFileName);
commandBarBuilder.ToolBarBuilders.Remove(NRichCommandBarBuilder.ToolbarStandardName);

To add or insert your own toolbar or menu drop down builder, you can use the Add or Insert methods of the corresponding builder collection respectively.

commandBarBuilder.MenuDropDownBuilders.Insert(1, new CustomMenuBuilder());
commandBarBuilder.ToolBarBuilders.Insert(0, new CustomToolBarBuilder());

2. Removing Commands

To hide all widgets associated with specific commands from the commanding UI, use the RemoveCommands method of the command UI holder created by the command bar builder. For example, the code snippet below removes the Open command and hides the widgets associated with them from the File menu and also removes the page number command from the status bar:

NRichTextCommandBarBuilder commandBarBuilder = new NRichTextCommandBarBuilder();
NCommandUIHolder richTextViewWithCommandBars = commandBarBuilder.CreateUI(richTextView);
richTextViewWithCommandBars.RemoveCommands(NRichTextView.OpenCommand, NRichTextView.PageNumberStatusBarCommand);

3. Custom Menu Builders

To create a custom menu builder, you should create a class that inherits NMenuDropDownBuilder:

public class CustomMenuBuilder : NMenuDropDownBuilder
{
    public CustomMenuBuilder()
        : base("Custom Menu")
    {
    }

    protected override void AddItems(NMenuItemCollection items)
    {
        // Add the "Copy" menu item
        items.Add(CreateMenuItem(Nevron.Nov.Presentation.NResources.Image_Edit_Copy_png,
            NRichTextView.CopyCommand));

        // Add the custom command menu item
        items.Add(CreateMenuItem(NResources.Image_Ribbon_16x16_smiley_png, CustomCommand));
    }
}

4. Custom Toolbar Builders

To create a custom toolbar builder, you should create a class that inherits NToolBarBuilder:

public class CustomToolBarBuilder : NToolBarBuilder
{
    public CustomToolBarBuilder()
        : base("Custom Toolbar")
    {
    }

    protected override void AddItems(NCommandBarItemCollection items)
    {
        // Add the "Copy" button
        items.Add(CreateButton(Nevron.Nov.Presentation.NResources.Image_Edit_Copy_png, NRichTextView.CopyCommand));

        // Add the custom command button
        items.Add(CreateButton(NResources.Image_Ribbon_16x16_smiley_png, CustomCommand));
    }
}

To replace the original "Standard" toolbar builder with the custom one, use the following code:

NRichTextCommandBarBuilder commandBarBuilder = new NRichTextCommandBarBuilder();
int toolbarIndex = commandBarBuilder.ToolBarBuilders.IndexOf(NRichTextCommandBarBuilder.ToolbarStandardName);
commandBarBuilder.ToolBarBuilders[toolbarIndex] = new CustomStandardToolbar();

To see how to define a custom command and a custom command action, take a look at the Rich Text Commanding Overview topic.

Commanding