We have released version 4.3 of MindFusion JavaScript Diagram library. It contains the following new features and improvements:

Multiple diagram pages
The DiagramDocument class represents a collection of diagram pages or sheets, represented by DiagramPage objects. New pages can be added to the document and existing pages can be removed and reordered by using the addPage and removePage methods respectively. The toJson, saveToXml and saveToString methods of DiagramDocument save all pages in a single file, and respectively the fromJson, loadFromXml and loadFromString methods load all pages from the file. DiagramDocument can also load files created by the serialization methods of Diagram, and will show them in a single page.

DiagramPage is derived from Diagram and only adds a few properties, so any code that processes Diagram objects will work with DiagramPage objects too. A diagram document forwards each event raised by its pages, giving you a chance to use the same handler for events raised by different pages. If a page should implement distinct user interaction or validation logic, it is also possible to attach handlers to the Diagram events inherited by DiagramPage.

A single DiagramPage could be assigned to the diagram property of DiagramView, and that lets you create your own user interface for presenting a list of pages to the user and selecting a current page. The package also includes a TabbedDiagramView that presents all pages of a document in a tabbed user interface where each tab corresponds to a page. The page displayed in the active tab is exposed by the selectedPage property of TabbedDiagramView. The active page can be changed interactively by activating its associated tab. New pages can be added and removed to / from the document through buttons in the tab strip and the pages can be rearranged by dragging their associated tabs with the mouse.

Tabbed diagram view
The TabbedDiagramView control is a view that displays DiagramDocument objects. Individual diagram pages can be activated through the tabs located at the top or at the bottom of the control. The appearance and behavior of the tab strip can be customized using various properties. The location and visibility of the strip is specified through the tabAlignment property. Its height can be changed via the tabsSize property. showAddButton and showNavigationButtons determine the visibility of the buttons for interactive tab creation and tab navigation respectively. showTabCloseButtons specifies whether the tabs can be closed interactively, by clicking on the small 'x' button displayed in each tab. allowReorder enables interactive tab rearrangement by mouse dragging.

TabbedDiagramView comes as s a part of the diagramming-controls npm package or the MindFusion.Diagramming.Controls namespace for UMD users.

For npm users simply import the diagramming-controls package:

import * as Controls from '@mindfusion/diagramming-controls'; 

For UMD users, add references to files from distrbution's /umd folder using <script> tags. Note that the order of the scripts matters.

<!-- core Diagramming -->
<script src="Scripts/collections.js" type="text/javascript"></script>
<script src="Scripts/drawing.js" type="text/javascript"></script>
<script src="Scripts/controls.js" type="text/javascript"></script>
<script src="Scripts/graphs.js" type="text/javascript"></script>
<script src="Scripts/animations.js" type="text/javascript"></script>
<script src="Scripts/diagramming.js" type="text/javascript"></script>

<!-- for TabbedDiagramView -->
<script src="Scripts/common.js" type="text/javascript"></script>
<script src="Scripts/common-collections.js" type="text/javascript"></script>
<script src="Scripts/common-ui.js" type="text/javascript"></script>
<script src="Scripts/diagramming-controls.js" type="text/javascript"></script>
 

Creating the control instance and adding it to an HTML page is the same as for the DiagramView control. You can pass a DiagramDocument instance to the create function, or omit that parameter to let the control create a new document with a single DiagramPage.

var doc = new MindFusion.Diagramming.DiagramDocument();
var page1 = new MindFusion.Diagramming.DiagramPage("diagram1");
var node = page1.factory.createShapeNode(10, 10, 20, 20);
doc.addPage(page1);
var diagramView = MindFusion.Diagramming.Controls.TabbedDiagramView.create(
    document.getElementById("diagram"), doc);
 

or simply

var diagramView = MindFusion.Diagramming.Controls.TabbedDiagramView.create(
    document.getElementById("diagram"));
 

You can specify a title, iconUrl and titleColor for diagram pages by setting the corresponding properties.

Default images for the navigation buttons must be located in an ./icons folder. Alternatively, you can style the control with a predefined css theme, in which case the themes included in the distribution must be located in a ./themes folder and referenced in the head of the HTML document, e.g.

<link rel="stylesheet" type="text/css" href="themes/business.css" />
...
diagramView.theme = MindFusion.Diagramming.Theme.fromId("business");
 

Distribution for the latest version can be downloaded here, or from the clients area on our site:
https://mindfusion.eu/JsDiagramTrial.zip

Updated scripts are also available as @mindfusion/diagramming NPM package.

Enjoy!