We also have to provide object contributions (which in the past were scoped by objectClass).
Here's an example from one of our plugin.xml:
<objectContribution adaptable="true"
objectClass="org.eclipse.core.resources.IFile"
nameFilter="*.xml"
id="org.eclipse.jdt.internal.ui.javadocexport.JavadocWizard">
<visibility>
<objectState name="contentTypeId"
value="org.eclipse.ant.core.antBuildFile" />
</visibility>
<action label="Create Javadoc"
class="org.eclipse.jdt.internal.ui.CreateJavadocActionDelegate"
enablesFor="1" id="LaunchJavadocWizard"/>
</objectContribution>
enablesFor is now a property of the active handler, not the visible GUI element.
There will be a reserved popup ID, "org.eclipse.ui.popup.any" that will allow contributions to any popup menu.
<extension point="org.eclipse.core.expressions.definitions">
<definition id="org.eclipse.ui.example.antFile">
<iterate ifEmpty="false">
<adapt type="org.eclipse.core.resources.IFile">
<test property="org.eclipse.core.resources.name" value="*.xml"/>
<test property="org.eclipse.core.resources.contentTypeId" value="org.eclipse.ant.core.antBuildFile"/>
</adapt>
</iterate>
</definition>
</extension>
<extension point="org.eclipse.ui.menus">
<menuContribution locationURI="popup:org.eclipse.ui.popup.any">
<command commandId="org.eclipse.jdt.ui.launchJavadocWizard" id="LaunchJavadocWizard" label="Create Javadoc" style="push">
<visibleWhen checkEnabled="false">
<or>
<with variable="activeMenuSelection">
<reference definitionId="org.eclipse.ui.example.antFile"/>
</with>
<with variable="activeMenuEditorInput">
<reference definitionId="org.eclipse.ui.example.antFile"/>
</with>
</or>
</visibleWhen>
</command>
</menuContribution>
</extension>
The default variable for visibleWhen/activeWhen/enabledWhen expressions is selection. But it's better to be specific and use <with variable="selection".../> if that's what you need.
Here is a similar example programmatically.
public static void addFileContribution() {
final IMenuService menuService = (IMenuService) PlatformUI
.getWorkbench().getService(IMenuService.class);
// an expression that walks the selection looking for objectclasses
final ObjectClassExpression ifileExpression = new ObjectClassExpression(
"org.eclipse.core.resources.IFile");
final ImageDescriptor postIcon = AbstractUIPlugin
.imageDescriptorFromPlugin("org.eclise.ui.tests",
"icons/full/elcl16/post_wiki.gif");
final ImageDescriptor loadIcon = AbstractUIPlugin
.imageDescriptorFromPlugin("org.eclise.ui.tests",
"icons/full/elcl16/load_wiki.gif");
AbstractContributionFactory factory = new AbstractContributionFactory(
"popup:org.eclipse.ui.popup.any?after=additions") {
public void createContributionItems(IMenuService menuService,
List additions) {
CommandContributionItem item = new CommandContributionItem(
"org.eclipse.ui.examples.wiki.post",
"org.eclipse.ui.examples.wiki.post", null, postIcon,
null, null, null, "P", null,
CommandContributionItem.STYLE_PUSH);
menuService.registerVisibleWhen(item, ifileExpression);
additions.add(item);
item = new CommandContributionItem(
"org.eclipse.ui.examples.wiki.load",
"org.eclipse.ui.examples.wiki.load", null, loadIcon,
null, null, null, "L", null,
CommandContributionItem.STYLE_PUSH);
menuService.registerVisibleWhen(item, ifileExpression);
additions.add(item);
}
public void releaseContributionItems(IMenuService menuService,
List items) {
}
};
menuService.addContributionFactory(factory);
}
The location of org.eclipse.ui.popup.any specifies any context menu, and the expression ties it to a specific objectClass. Using the new expression syntax you can make your conditions more complex.
You can set your visibleWhen expression on each item as you create it.
In 3.3M6 registerVisibleWhen(*) method might be changing.