public void update(AnActionEvent e) {
final Presentation presentation = e.getPresentation();
presentation.setEnabled(false);
if (myElement != null) {
final PsiElement element = myElement.getElement();
final DocumentationProvider provider = DocumentationManager.getProviderFromElement(element);
final PsiElement originalElement = DocumentationManager.getOriginalElement(element);
if (provider instanceof ExternalDocumentationProvider) {
presentation.setEnabled(
element != null
&& ((ExternalDocumentationProvider) provider)
.hasDocumentationFor(element, originalElement));
} else {
final List<String> urls = provider.getUrlFor(element, originalElement);
presentation.setEnabled(element != null && urls != null && !urls.isEmpty());
}
}
}
@Override
public void update(AnActionEvent e) {
Presentation presentation = e.getPresentation();
presentation.setEnabled(!myForwardStack.isEmpty());
}
public void update(AnActionEvent e) {
Presentation presentation = e.getPresentation();
presentation.setEnabled(!myBackStack.isEmpty());
}