code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/PithosDisclosurePanel.java

   1 /*
   2  * Copyright 2012-2013 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35
  36 package gr.grnet.pithos.web.client;
  37
  38 import com.google.gwt.event.logical.shared.CloseEvent;
  39 import com.google.gwt.event.logical.shared.CloseHandler;
  40 import com.google.gwt.event.logical.shared.OpenEvent;
  41 import com.google.gwt.event.logical.shared.OpenHandler;
  42 import com.google.gwt.resources.client.ClientBundle;
  43 import com.google.gwt.resources.client.CssResource;
  44 import com.google.gwt.resources.client.ImageResource;
  45 import com.google.gwt.user.client.ui.*;
  46
  47 public class PithosDisclosurePanel extends Composite {
  48
  49         public interface Style extends CssResource {
  50                 String disclosurePanel();
  51
  52                 String header();
  53
  54                 String arrow();
  55
  56                 String content();
  57         }
  58
  59         public interface Resources extends ClientBundle {
  60                 @Source("PithosDisclosurePanel.css")
  61                 Style pithosDisclosurePanelCss();
  62
  63                 @Source("upArrow.png")
  64                 ImageResource icon();
  65
  66                 @Source("upArrow.png")
  67                 ImageResource open();
  68
  69                 @Source("downArrow.png")
  70                 ImageResource closed();
  71
  72         @Source("gr/grnet/pithos/resources/ajax-loader.gif")
  73         ImageResource ajaxLoader();
  74         }
  75
  76         private final DisclosurePanel panel;
  77     private final Resources resources;
  78     private final String title;
  79
  80     // This is the header of each one of the extra hierarchies named "Shared with me", "Shared by me" and "Groups".
  81     // The previous strings are the values given to the title parameter of the constructor.
  82         public PithosDisclosurePanel(final Resources _resources, final String title, boolean ajaxLoader, boolean open) {
  83         this.title = title;
  84
  85                 this.resources = _resources;
  86                 resources.pithosDisclosurePanelCss().ensureInjected();
  87                 this.panel = new DisclosurePanel();
  88                 panel.addStyleName(resources.pithosDisclosurePanelCss().disclosurePanel());
  89                 panel.setHeader(createHeader(resources, title, ajaxLoader, open));
  90                 panel.setOpen(open);
  91
  92         if(!ajaxLoader) {
  93             addOpenCloseHandlers();
  94         }
  95
  96                 initWidget(panel);
  97         }
  98
  99     private void addOpenCloseHandlers() {
 100         panel.addOpenHandler(new OpenHandler<DisclosurePanel>() {
 101             @Override
 102             public void onOpen(OpenEvent<DisclosurePanel> event) {
 103                 panel.setHeader(createHeader(resources, title, false, true));
 104             }
 105         });
 106         panel.addCloseHandler(new CloseHandler<DisclosurePanel>() {
 107
 108             @Override
 109             public void onClose(CloseEvent<DisclosurePanel> event) {
 110                 panel.setHeader(createHeader(resources, title, false, false));
 111             }
 112         });
 113     }
 114
 115     public void setLoaded(boolean open) {
 116         this.panel.setHeader(createHeader(resources, title, false, open));
 117         addOpenCloseHandlers();
 118     }
 119
 120         Widget createHeader(Resources resources, String title, boolean ajaxLoader, boolean open) {
 121                 HorizontalPanel header = new HorizontalPanel();
 122
 123                 Image img = new Image(resources.icon());
 124                 header.add(img);
 125                 header.setCellVerticalAlignment(img, HasVerticalAlignment.ALIGN_MIDDLE);
 126                 header.setCellWidth(img, "32px");
 127                 HTML titleHtml = new HTML(title);
 128                 header.add(titleHtml);
 129                 header.setCellVerticalAlignment(titleHtml, HasVerticalAlignment.ALIGN_MIDDLE);
 130                 Image arrow = new Image(ajaxLoader ? resources.ajaxLoader() : open ? resources.open() : resources.closed());
 131                 arrow.addStyleName(resources.pithosDisclosurePanelCss().arrow());
 132                 header.add(arrow);
 133                 header.setCellHorizontalAlignment(arrow, HasHorizontalAlignment.ALIGN_RIGHT);
 134                 header.setCellVerticalAlignment(arrow, HasVerticalAlignment.ALIGN_MIDDLE);
 135
 136                 header.addStyleName(resources.pithosDisclosurePanelCss().header());
 137                 return header;
 138         }
 139
 140         public void setContent(Widget widget) {
 141                 panel.setContent(widget);
 142                 panel.getContent().removeStyleName("content");
 143                 panel.getContent().addStyleName(resources.pithosDisclosurePanelCss().content());
 144         }
 145 }