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1   /**
2    * This file Copyright (c) 2019 Magnolia International
3    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
4    *
5    *
6    * This file is dual-licensed under both the Magnolia
7    * Network Agreement and the GNU General Public License.
8    * You may elect to use one or the other of these licenses.
9    *
10   * This file is distributed in the hope that it will be
11   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12   * implied warranty of MERCHANTABILITY or FITNESS FOR A
13   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14   * Redistribution, except as permitted by whichever of the GPL
15   * or MNA you select, is prohibited.
16   *
17   * 1. For the GPL license (GPL), you can redistribute and/or
18   * modify this file under the terms of the GNU General
19   * Public License, Version 3, as published by the Free Software
20   * Foundation.  You should have received a copy of the GNU
21   * General Public License, Version 3 along with this program;
22   * if not, write to the Free Software Foundation, Inc., 51
23   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24   *
25   * 2. For the Magnolia Network Agreement (MNA), this file
26   * and the accompanying materials are made available under the
27   * terms of the MNA which accompanies this distribution, and
28   * is available at http://www.magnolia-cms.com/mna.html
29   *
30   * Any modifications to this file must keep this entire header
31   * intact.
32   *
33   */
34  package info.magnolia.ui.contentapp.browser;
35  
36  import info.magnolia.ui.contentapp.browser.actions.ContextAwareActionPopup;
37  import info.magnolia.ui.ValueContext;
38  import info.magnolia.ui.contentapp.browser.preview.PreviewProvider;
39  import info.magnolia.ui.vaadin.layout.LazyThumbnailLayout;
40  
41  import javax.inject.Inject;
42  
43  import com.vaadin.ui.Composite;
44  import com.vaadin.ui.IconGenerator;
45  import com.vaadin.ui.ItemCaptionGenerator;
46  
47  
48  /**
49   * Content view presenting a flat dataset via resizable thumbnails.
50   * @param <T> item type.
51   */
52  public class ThumbnailView<T> extends Composite implements ContentView {
53  
54      @Inject
55      public ThumbnailView(ValueContext<T> valueContext, PreviewProvider<T> previewProvider) {
56          ThumbnailPresenter<T> presenter = create(ThumbnailPresenter.class);
57  
58          LazyThumbnailLayout<T> thumbnailLayout = new LazyThumbnailLayout<T>(presenter.dataProvider()) {
59  
60              @Override
61              protected ItemCaptionGenerator<T> getItemCaptionGenerator() {
62                  return presenter::getCaption;
63              }
64  
65              @Override
66              protected IconGenerator<T> getItemResourceGenerator() {
67                  return item -> previewProvider.getResource(item).orElse(null);
68              }
69          };
70          thumbnailLayout.addStyleName("mgnl-workbench-thumbnail-view");
71          setCompositionRoot(thumbnailLayout);
72          setSizeFull();
73  
74          thumbnailLayout.setElementSize(150, 120);
75  
76          ContextAwareActionPopup actionPopup = create(ContextAwareActionPopup.class, thumbnailLayout);
77          thumbnailLayout.refresh();
78  
79          valueContext.get().findFirst().ifPresent(thumbnailLayout::setSelectedItem);
80          thumbnailLayout.addRightClickListener((item, clickX, clickY) -> valueContext.set(item));
81          thumbnailLayout.addElementSelectionListener(valueContext::set);
82          thumbnailLayout.addDoubleClickListener(item -> {
83              valueContext.set(item);
84              actionPopup.fireDefaultAction();
85          });
86      }
87  }