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| <h2> Customizing Java editors</h2> |
| <p>The JDT tools implement a fully-functioning Java editor. They also |
| define API so you can assign Java text editing features to your own editors or |
| enhance the Java editor with your plug-in specific features.</p> |
| <h3> Java text editing</h3> |
| <p><a href="../reference/api/org/eclipse/jdt/ui/text/JavaSourceViewerConfiguration.html"><b>JavaSourceViewerConfiguration</b></a> |
| describes the configuration for a viewer that displays Java code. Given a |
| source code viewer, this class provides access to the instances of the utility |
| classes that add Java specific behavior to the viewer, such as coloring, |
| scanning of tokens, content assist, etc. The viewer configuration depends |
| on <a href="../reference/api/org/eclipse/jdt/ui/text/JavaTextTools.html"><b> |
| JavaTextTools</b></a> to provide this information. <a href="../reference/api/org/eclipse/jdt/ui/text/JavaTextTools.html"><b>JavaTextTools</b></a> |
| is a utility class that provides the scanners and managers for Java text and |
| ensures that these classes are configured appropriately when the Java editor |
| preferences change.</p> |
| <h3> Java text hovers</h3> |
| <p>When you implement a plug-in that provides additional capabilities associated |
| with Java code, you may want to implement new hover behavior in the editor, so |
| that information about your model elements will be shown as the user hovers over |
| Java code. For example, the debugger uses a customized hover to show |
| variable values when the user hovers over variable names in the editor.</p> |
| <p>The extension point <a href="../reference/extension-points/org_eclipse_jdt_ui_javaEditorTextHovers.html"> |
| <b> |
| org.eclipse.jdt.ui.javaEditorTextHovers</b></a> allows you to register your |
| own hover implementation. You are responsible for implementing the <a href="../reference/api/org/eclipse/jdt/ui/text/java/hover/IJavaEditorTextHover.html"><b>IJavaEditorTextHover</b></a> |
| and registering your implementation class in the extension definition. You |
| also provide a label for your hover type so that the user can enable and disable |
| the different types of hovers from the editor preferences page.</p> |
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