Bug 65268 [projection] editor is missing collapse all action for code folding
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
/*
	 * @see AbstractTextEditor#affectsTextPresentation(PropertyChangeEvent)
	 */
	protected boolean affectsTextPresentation(PropertyChangeEvent event) {
		return ((JavaSourceViewerConfiguration)getSourceViewerConfiguration()).affectsTextPresentation(event) || super.affectsTextPresentation(event);
	}
	/**
	 * Creates and returns the preference store for this Java editor with the given input.
	 *
	 * @param input The editor input for which to create the preference store
	 * @return the preference store for this editor
	 *
	 * @since 3.0
	 */
	private IPreferenceStore createCombinedPreferenceStore(IEditorInput input) {
		List stores= new ArrayList(3);
		IJavaProject project= EditorUtility.getJavaProject(input);
		if (project != null) {
			stores.add(new EclipsePreferencesAdapter(new ProjectScope(project.getProject()), JavaCore.PLUGIN_ID));
		}
		stores.add(JavaPlugin.getDefault().getPreferenceStore());
		stores.add(new PreferencesAdapter(JavaCore.getPlugin().getPluginPreferences()));
		stores.add(EditorsUI.getPreferenceStore());
		return new ChainedPreferenceStore((IPreferenceStore[]) stores.toArray(new IPreferenceStore[stores.size()]));
	}
	/**
	 * Sets the outliner's context menu ID.
	 *
	 * @param menuId the menu ID
	 */