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

   1 /*
   2  * Copyright 2012 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.Composite;
  46 import com.google.gwt.user.client.ui.DisclosurePanel;
  47 import com.google.gwt.user.client.ui.HTML;
  48 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  49 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  50 import com.google.gwt.user.client.ui.HorizontalPanel;
  51 import com.google.gwt.user.client.ui.Image;
  52 import com.google.gwt.user.client.ui.Widget;
  53
  54 public class PithosDisclosurePanel extends Composite {
  55
  56         public interface Style extends CssResource {
  57                 String disclosurePanel();
  58
  59                 String header();
  60
  61                 String arrow();
  62
  63                 String content();
  64         }
  65
  66         public interface Resources extends ClientBundle {
  67                 @Source("PithosDisclosurePanel.css")
  68                 Style pithosDisclosurePanelCss();
  69
  70                 @Source("upArrow.png")
  71                 ImageResource icon();
  72
  73                 @Source("upArrow.png")
  74                 ImageResource open();
  75
  76                 @Source("downArrow.png")
  77                 ImageResource closed();
  78         }
  79
  80         DisclosurePanel panel;
  81
  82         Resources resources;
  83
  84         public PithosDisclosurePanel(final Resources _resources, final String title, boolean open) {
  85                 resources = _resources;
  86                 resources.pithosDisclosurePanelCss().ensureInjected();
  87                 panel = new DisclosurePanel();
  88                 panel.addStyleName(resources.pithosDisclosurePanelCss().disclosurePanel());
  89                 panel.setHeader(createHeader(resources, title, open));
  90                 panel.setOpen(open);
  91                 panel.addOpenHandler(new OpenHandler<DisclosurePanel>() {
  92
  93                         @Override
  94                         public void onOpen(OpenEvent<DisclosurePanel> event) {
  95                                 panel.setHeader(createHeader(resources, title, true));
  96                         }
  97                 });
  98                 panel.addCloseHandler(new CloseHandler<DisclosurePanel>() {
  99
 100                         @Override
 101                         public void onClose(CloseEvent<DisclosurePanel> event) {
 102                                 panel.setHeader(createHeader(resources, title, false));
 103                         }
 104                 });
 105
 106                 initWidget(panel);
 107         }
 108
 109         Widget createHeader(Resources resources, String title, boolean open) {
 110                 HorizontalPanel header = new HorizontalPanel();
 111
 112                 Image img = new Image(resources.icon());
 113                 header.add(img);
 114                 header.setCellVerticalAlignment(img, HasVerticalAlignment.ALIGN_MIDDLE);
 115                 header.setCellWidth(img, "32px");
 116                 HTML titleHtml = new HTML(title);
 117                 header.add(titleHtml);
 118                 header.setCellVerticalAlignment(titleHtml, HasVerticalAlignment.ALIGN_MIDDLE);
 119                 Image arrow = new Image(open ? resources.open() : resources.closed());
 120                 arrow.addStyleName(resources.pithosDisclosurePanelCss().arrow());
 121                 header.add(arrow);
 122                 header.setCellHorizontalAlignment(arrow, HasHorizontalAlignment.ALIGN_RIGHT);
 123                 header.setCellVerticalAlignment(arrow, HasVerticalAlignment.ALIGN_MIDDLE);
 124
 125                 header.addStyleName(resources.pithosDisclosurePanelCss().header());
 126                 return header;
 127         }
 128
 129         public void setContent(Widget widget) {
 130                 panel.setContent(widget);
 131                 panel.getContent().removeStyleName("content");
 132                 panel.getContent().addStyleName(resources.pithosDisclosurePanelCss().content());
 133         }
 134 }