Based on user settings (in the Settings menu), Ferret tracks mouse movement, focus updates, and text caret movement in a particular JavaTM Virtual Machine. If set to do so, when it detects that the mouse has stopped moving for a short period of time, it calls EventQueueMonitor's method, getAccessibleAt, to determine the Accessible object under the mouse. Once it has done so, it displays the Accessible information of that object. Similarly, if set to do so, when it detects that a new UI object has the focus, it displays the Accessible information for that new UI object. Further, if set to do so, it will display the Accessible information for the text object containing the caret when the caret moves. Finally, if set to do so, it will call EventQueueMonitor's method, getAccessibleAt, to determine the Accessible object under the mouse when the user the F1 key, and then display the Accessible information of that object.
The Ferret class is in the examples/Ferret directory included with this release of the Java Accessibility Utilities (click here to view the source). The compiled classes of Ferret are also included in the jaccess-examples.jar file includes with this release. Before you can run Ferret, you need to set up your environment appropriately by following these instructions:
After you follow these instructions, you should be ready to run Ferret. If you did not set up your CLASSPATH correctly you might get one of the following errors when running a JavaTM application:Add the jaccess.jar and jaccess-examples.jar files to your CLASSPATH environment variable. Modify your $JDKHOME/lib/awt.properties file to include the following lines: AWT.EventQueueClass=com.sun.java.accessibility.util.EventQueueMonitor AWT.assistive_technologies=Ferret
Failed loading com.sun.java.accessibility.util.EventQueueMonitor: java.lang.ClassNotFoundException: com.sun.java.accessibility.util.EventQueueMonitor
Error trying to newInstance Ferret java.lang.ClassNotFoundException: FerretThe first error means the jaccess.jar file is not in your CLASSPATH, and the second means the jaccess-examples.jar file is not in your CLASSPATH.
The Ferret class is in the examples/Ferret directory included with this release of the Java Accessibility Utilities (click here to view the source). Before you can run it, you need to set up your environment appropriately by following these instructions:
After you follow these instructions, you should be ready to run Ferret.Copy jaccess.jar and jaccess-examples.jar to the $JDKHOME/jre/lib/ext directory under your JDK1.2 or later installation. Modify (create one if it doesn't exist) your $JDKHOME/jre/lib/accessibility.properties file to include the following line: assistive_technologies=Ferret