| /*=============================================================================# |
| # Copyright (c) 2005, 2019 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.ecommons.ui.dialogs.groups; |
| |
| import org.eclipse.jface.viewers.DoubleClickEvent; |
| import org.eclipse.jface.viewers.IContentProvider; |
| import org.eclipse.jface.viewers.IDoubleClickListener; |
| import org.eclipse.jface.viewers.ISelectionChangedListener; |
| import org.eclipse.jface.viewers.IStructuredContentProvider; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.SelectionChangedEvent; |
| import org.eclipse.jface.viewers.StructuredViewer; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.events.KeyAdapter; |
| import org.eclipse.swt.events.KeyEvent; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| |
| |
| public abstract class StructuredSelectionOptionsGroup<SelectionT extends StructuredViewer, ItemT extends Object> |
| extends SelectionOptionsGroup<ItemT> { |
| |
| |
| private class ItemContentProvider implements IStructuredContentProvider { |
| |
| @Override |
| public void dispose() { |
| } |
| |
| @Override |
| public void inputChanged(final Viewer viewer, final Object oldInput, final Object newInput) { |
| } |
| |
| @Override |
| public Object[] getElements(final Object inputElement) { |
| return getListModel().toArray(); |
| } |
| } |
| |
| |
| private SelectionT fSelectionViewer; |
| |
| |
| public StructuredSelectionOptionsGroup(final boolean grabSelectionHorizontal, final boolean grabVertical) { |
| super(grabSelectionHorizontal, grabVertical); |
| } |
| |
| @Override |
| protected Control createSelectionControl(final Composite parent) { |
| this.fSelectionViewer = createSelectionViewer(parent); |
| this.fSelectionViewer.setContentProvider(createContentProvider()); |
| this.fSelectionViewer.addSelectionChangedListener(createSelectionChangeListener()); |
| this.fSelectionViewer.addDoubleClickListener(createDoubleClickListener()); |
| this.fSelectionViewer.getControl().addKeyListener(new KeyAdapter() { |
| @Override |
| public void keyPressed(final KeyEvent e) { |
| handleKeyPressed(e); |
| } |
| }); |
| return this.fSelectionViewer.getControl(); |
| } |
| |
| protected abstract SelectionT createSelectionViewer(Composite parent); |
| |
| protected IContentProvider createContentProvider() { |
| return new ItemContentProvider(); |
| } |
| |
| protected ISelectionChangedListener createSelectionChangeListener() { |
| return new ISelectionChangedListener() { |
| @Override |
| public void selectionChanged(final SelectionChangedEvent event) { |
| final IStructuredSelection selection = (IStructuredSelection) event.getSelection(); |
| handleSelection(getSingleItem(selection), selection); |
| } |
| }; |
| } |
| |
| protected IDoubleClickListener createDoubleClickListener() { |
| return new IDoubleClickListener() { |
| @Override |
| public void doubleClick(final DoubleClickEvent event) { |
| final IStructuredSelection selection = (IStructuredSelection) event.getSelection(); |
| handleDoubleClick(getSingleItem(selection), selection); |
| } |
| }; |
| } |
| |
| public SelectionT getStructuredViewer() { |
| return this.fSelectionViewer; |
| } |
| |
| @Override |
| public void initFields() { |
| super.initFields(); |
| this.fSelectionViewer.setInput(getListModel()); |
| this.fSelectionViewer.refresh(); |
| } |
| |
| public void refresh() { |
| getStructuredViewer().refresh(); |
| reselect(); |
| } |
| |
| public void reselect() { |
| final IStructuredSelection selection = getSelectedItems(); |
| handleSelection(getSingleItem(selection), selection); |
| } |
| |
| /** |
| * Selection-change in List |
| * <p> |
| * Default-Implementierung macht nichts. |
| */ |
| protected void handleSelection(final ItemT item, final IStructuredSelection rawSelection) { |
| } |
| |
| /** |
| * Double-click on table item. |
| * <p> |
| * Default Implementierung macht nichts. |
| * @param item |
| */ |
| protected void handleDoubleClick(final ItemT item, final IStructuredSelection rawSelection) { |
| } |
| |
| /** |
| * Handles key events in the table viewer. |
| * <p> |
| * Standard-Implementierung macht nichts. |
| */ |
| protected void handleKeyPressed(final KeyEvent event) { |
| } |
| |
| |
| public IStructuredSelection getSelectedItems() { |
| return (IStructuredSelection) this.fSelectionViewer.getSelection(); |
| } |
| |
| public ItemT getSingleItem(final IStructuredSelection selection) { |
| if (selection.size() == 1) { |
| return (ItemT) selection.getFirstElement(); |
| } |
| return null; |
| } |
| |
| } |