Java 类org.eclipse.ui.dialogs.TwoPaneElementSelector 实例源码

/**
 * Ouvre un dialogue de recherche à partir d'un template.
 * 
 * @param template Template.
 */
public static void openDialog(OpenDialogTemplate template) {

    String nature = template.getNature();

    /* Charge les éléments à rechercher. */
    Object[] items = template.getElements();

    /* Cas sans élément à afficher. */
    if (items.length == 0) {
        /* On affiche un message et on sort. */
        MessageUtils.showNoElementMessage(nature);
        return;
    }

    /* Construit le dialogue. */
    TwoPaneElementSelector dialog = createDialog(nature, items);

    /* Ouvre le dialogue. */
    openDialog(dialog);
}

private static <T extends Openable> TwoPaneElementSelector createDialog(String nature, Object[] items) {
    TwoPaneElementSelector dialog = new TwoPaneElementSelector(UiUtils.getShell(), new ElementLabelProvider<T>(), new QualifierLabelProvider<T>());
    dialog.setSize(LIST_WIDTH, LIST_HEIGHT);
    dialog.setLowerListLabel("Selection");
    dialog.setLowerListComparator((o1, o2) -> 0);
    dialog.setTitle(MessageFormat.format("Open {0}", nature));
    dialog.setMessage(MessageFormat.format("Enter {0} prefix or pattern :", nature));
    dialog.setElements(items);
    return dialog;
}

@SuppressWarnings("unchecked")
private static <T extends Openable> void openDialog(TwoPaneElementSelector dialog) {
    if (dialog.open() == Window.OK) {
        Object[] result = dialog.getResult();
        if (result != null && result.length == 1) {
            /* Un objet est sélectionné : on navigue dessus. */
            Object object = result[0];
            T item = (T) object;
            UiUtils.navigateTo(item);
        }
    }
}

/**
 * Opens a dialog which allows to select a key reference.
 *
 * @param keyReferences the array of key references
 * @return the selected key reference or <code>null</code> if canceled by the user
 */
private KeyReference select(final KeyReference[] keyReferences) {
    Arrays.sort(keyReferences);
    final int length= keyReferences.length;
    ILabelProvider labelProvider= new WorkbenchLabelProvider() {
        @Override
        public String decorateText(String input, Object element) {
            KeyReference keyRef= (KeyReference)element;
            IStorage storage= keyRef.storage;
            String name= storage.getName();
            if (name == null)
                return input;

            int count= 0;
            for (int i= 0; i < length; i++) {
                if (keyReferences[i].storage.equals(storage))
                    count++;
            }
            if (count > 1) {
                Object[] args= new Object[] { BasicElementLabels.getResourceName(name), new Integer(count) };
                name= Messages.format(PropertiesFileEditorMessages.OpenAction_SelectionDialog_elementLabelWithMatchCount, args);
            }

            return name;
        }
    };

    TwoPaneElementSelector dialog= new TwoPaneElementSelector(fShell, labelProvider, new WorkbenchLabelProvider());
    dialog.setLowerListLabel(PropertiesFileEditorMessages.OpenAction_SelectionDialog_details);
    dialog.setLowerListComparator(new Comparator<Object>() {
        public int compare(Object o1, Object o2) {
            return 0; // don't sort
        }
    });
    dialog.setTitle(PropertiesFileEditorMessages.OpenAction_SelectionDialog_title);
    dialog.setMessage(PropertiesFileEditorMessages.OpenAction_SelectionDialog_message);
    dialog.setElements(keyReferences);

    if (dialog.open() == Window.OK) {
        Object[] result= dialog.getResult();
        if (result != null && result.length == 1)
         return (KeyReference)result[0];
    }

    return null;
}