Perforce JViews Diagrammer Sample: Diagram Editing (JavaScript)

Description

Diagram editing using Perforce JViews JSF components.

How to Use the Sample

This sample allows you to select, move, add, remove one or several nodes and links of a diagram, as well as edit their properties. As the model is stored in the session, these changes will be valid throughout the user session. Since JViews 8.7, you can scroll the Diagrammer view, reshape the selected links and move them from one node to another one.

This sample also demonstrates the integration of the Perforce JViews Diagrammer component with the Ajax Dojo Drag and Drop feature. For this purpose, a version of the Dojo library has been included.

To select a node, choose the select interactor ( on the toolbar) and click the desired node.
To select several nodes, or add a node to the current selection, press the Ctrl key while you click the node.
To move nodes, select and drag them to the desired location.
To create a new node, drag the desired type of node from the toolbar and drop it at the desired location in the view.
To create a new link, select the link button on the toolbar and click the desired source node in the view.
Without releasing the mouse button, drag the pointer to the target node.
To layout the diagram, click the or button on the toolbar to layout all the nodes or only the selected ones.
To delete one or several nodes or links, select them and click the button on the toolbar.
To move a link from one node to another one, select the link and drag its start handle or end handle to another node. To reshape the link, select the link and drag its middle handle.
To add or remove a handle from the link, press the Ctrl key while dragging the handle from or to the link.
If the size of the Diagrammer image is larger than size of the view, the scrollbar can be used to navigate the whole Diagrammer image within the view.
Enable image mode by selecting the Image Mode check box.

When image mode is enabled, the selected objects are drawn as described in the Diagrammer CSS instead of just being highlighted by a selection rectangle. However, a full image refresh is required when selecting objects. Therefore this mode might be slower than the regular mode.

Installing the Thin-Client Sample

The sample contains a WAR file (Web Archive) that allows you to easily install the sample on any server that supports the Servlet API 2.1 or later. For your convenience, the WAR will be copied to the Tomcat web server that is supplied with the Perforce JViews installation when you start the server using the supplied scripts. Tomcat is the official reference implementation of the Servlet and JSP specifications. If you are already using an up-to-date Web or application server, there is a good chance that it already has everything you need. The sample can also be deployed to WebSphere Application Server (WAS).

Running the Sample Using Tomcat

If you intend to use the Tomcat Web server provided with this installation, follow these instructions to start the server: Running the Server-Side Samples. The scripts to start the server can be found in the tools/tomcat-jsf directory.
Note: if you are running on Windows then you will find menu items in the Windows "start" menu to start and stop the Tomcat server.

Once the server is running, you can see the sample by opening the following page:

Perforce JViews Diagrammer Sample: Diagram Editing (JavaScript)
http://localhost:8080/js-diagrammer-editing

Running the Sample Using WebSphere Application Server

In addition to the instructions provided for using Tomcat, the samples can be viewed on WebSphere Application Server. Follow the instructions: Running the Server-Side Samples and use the scripts to start the server and deploy the sample.

Once the server is running, you can see the sample by opening the following page: http://localhost:9443/js-diagrammer-editing
The WAS administrative console can be used to verify or modify server settings: http://localhost:9043/ibm/console/

Note: the WAS server can start on a range of port numbers, therefore the value is not guaranteed to remain the same. The scripts provided with the samples can be used to obtain the port numbers used by the Admin Console and by the deployed Web applications. To retrieve a list of all the WAS port numbers, run the command line instruction: ant -f build_was.xml ws.list.ports

Topics Covered

Pure Javascript Diagrammer

Detailed Description

This sample shows how to edit a diagram using pure JavaScript library of JViews.

Installation Directory

The Diagram Editing (JavaScript) sample is installed here.