Page Navigator

In This Topic

The NOV Diagram for .NET - Page Navigator is a widget positioned in the bottom-left corner of the drawing view. It allows users to switch between different drawing pages and manage their order via drag-and-drop functionality. Additionally, the Page Navigator supports adding new pages and provides per-page context menus for quick operations, including deleting, renaming, duplicating, and configuring grid, rulers, and page setup.

The Page Navigator by default displays both the foreground and the background pages of the drawing, currently displayed by the drawing view. The foreground pages are displayed fist, and the background pages are displayed after them, in italic text style. The following image is an example of the outlook of the page navigator:

The Page Navigator is represented by the NPageNavigator class, an instances of which can be obtained from the NDrawingView - PageNavigator property, as shown in the following example:

Getting the Page Navigator of a Drawing View	Copy Code
using Nevron.Nov.Diagram.UI; ... NDrawingView drawingView = new NDrawingView(); NPageNavigator pageNavigator = drawingView.PageNavigator;

Action Permissions

The following properties of the page navigator control which actions are allowed:

AllowAddPage - specifies whether adding and duplicating pages is allowed. When set to false, both the "Add" button and the "Duplicate" context menu item are hidden.
AllowDeletePage - specifies whether deleting pages is allowed. When set to false, the "Delete" context menu item is hidden.
AllowEditPage - specifies whether page editing is allowed. When set to false, the "Rename Page", "Grid and Rulers" and "Page Properties" commands are hidden.
AllowReorderPages - specifies whether pages can be reordered through the page navigator.

The page context menu is also not shown, if all commands inside it will be disabled. The following code prohibits all operations with the pages through the page navigator.

Hide the Add button and the page context menu	Copy Code
drawingView.PageNavigator.AllowAdd = false; drawingView.PageNavigator.AllowDelete = false; drawingView.PageNavigator.AllowEditPage = false; drawingView.PageNavigator.AllowReorderPages = false;

Showing/Hiding the Foreground and Background Pages

The ShowForegroundPages property controls the visibility of the foreground pages in the page navigator. Similarly, the ShowBackgroundPages property control the visibility of the background pages. By default the page navigator shows both the foreground and the background pages. The following code example hides the background pages:

Hide the background pages	Copy Code
drawingView.PageNavigator.ShowBackgroundPages = false;

Hiding the Whole Page Navigator

To hide the whole page navigator, use the following code:

Hide the page navigator completely	Copy Code
drawingView.PageNavigator.Visibility = ENVisibility.Collapsed;