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

   1 /*\r
   2  * Copyright 2011 GRNET S.A. All rights reserved.\r
   3  *\r
   4  * Redistribution and use in source and binary forms, with or\r
   5  * without modification, are permitted provided that the following\r
   6  * conditions are met:\r
   7  *\r
   8  *   1. Redistributions of source code must retain the above\r
   9  *      copyright notice, this list of conditions and the following\r
  10  *      disclaimer.\r
  11  *\r
  12  *   2. Redistributions in binary form must reproduce the above\r
  13  *      copyright notice, this list of conditions and the following\r
  14  *      disclaimer in the documentation and/or other materials\r
  15  *      provided with the distribution.\r
  16  *\r
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS\r
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\r
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR\r
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\r
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\r
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF\r
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED\r
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN\r
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
  28  * POSSIBILITY OF SUCH DAMAGE.\r
  29  *\r
  30  * The views and conclusions contained in the software and\r
  31  * documentation are those of the authors and should not be\r
  32  * interpreted as representing official policies, either expressed\r
  33  * or implied, of GRNET S.A.\r
  34  */\r
  35 package gr.grnet.pithos.web.client;\r
  36 \r
  37 import gr.grnet.pithos.web.client.rest.GetCommand;\r
  38 import gr.grnet.pithos.web.client.rest.resource.TagsResource;\r
  39 \r
  40 import java.util.List;\r
  41 \r
  42 import com.google.gwt.core.client.GWT;\r
  43 import com.google.gwt.dom.client.NativeEvent;\r
  44 import com.google.gwt.event.dom.client.ClickEvent;\r
  45 import com.google.gwt.event.dom.client.ClickHandler;\r
  46 import com.google.gwt.event.dom.client.KeyCodes;\r
  47 import com.google.gwt.user.client.DeferredCommand;\r
  48 import com.google.gwt.user.client.Event.NativePreviewEvent;\r
  49 import com.google.gwt.user.client.ui.Anchor;\r
  50 import com.google.gwt.user.client.ui.DialogBox;\r
  51 import com.google.gwt.user.client.ui.FlowPanel;\r
  52 import com.google.gwt.user.client.ui.Label;\r
  53 import com.google.gwt.user.client.ui.TabPanel;\r
  54 import com.google.gwt.user.client.ui.TextBox;\r
  55 \r
  56 /**\r
  57  * Abstract class, parent of all 'File properties' dialog boxes.\r
  58  *\r
  59  */\r
  60 public abstract class AbstractPropertiesDialog extends DialogBox {\r
  61 \r
  62         protected static final String MULTIPLE_VALUES_TEXT = "(Multiple values)";\r
  63 \r
  64         /**\r
  65          * Text box with the tags associated with the file\r
  66          */\r
  67         protected TextBox tags = new TextBox();\r
  68 \r
  69         protected String initialTagText;\r
  70 \r
  71         /**\r
  72          * A FlowPanel with all user tags\r
  73          */\r
  74         protected FlowPanel allTagsContent;\r
  75 \r
  76 \r
  77         protected TabPanel inner = null;\r
  78 \r
  79         /**\r
  80          * The widget's constructor.\r
  81          *\r
  82          */\r
  83         public AbstractPropertiesDialog() {\r
  84 \r
  85                 // Enable IE selection for the dialog (must disable it upon closing it)\r
  86                 GSS.enableIESelection();\r
  87 \r
  88                 setAnimationEnabled(true);\r
  89 \r
  90         }\r
  91         /**\r
  92          * Retrieves all user tags from the server and updates the FlowPanel\r
  93          *\r
  94          * @param userId\r
  95          */\r
  96         protected void updateTags() {\r
  97                 GetCommand<TagsResource> tc = new GetCommand<TagsResource>(TagsResource.class, GSS.get().getCurrentUserResource().getTagsPath(),null) {\r
  98 \r
  99                         @Override\r
 100                         public void onComplete() {\r
 101                                 allTagsContent.clear();\r
 102                                 TagsResource tagr = getResult();\r
 103                                 List<String> userTags = tagr.getTags();\r
 104                                 Anchor tag = null;\r
 105                                 for(String usrTag : userTags){\r
 106                                         tag = new Anchor(usrTag.toString(), false);\r
 107                                         tag.addStyleName("pithos-tag");\r
 108                                         allTagsContent.add(tag);\r
 109                                         Label separator = new Label(", ");\r
 110                                         separator.addStyleName("pithos-tag");\r
 111                                         allTagsContent.add(separator);\r
 112                                         tag.addClickHandler( new ClickHandler() {\r
 113 \r
 114                                                 @Override\r
 115                                                 public void onClick(ClickEvent event) {\r
 116                                                         String existing = tags.getText();\r
 117                                                         if (MULTIPLE_VALUES_TEXT.equals(existing)) existing = "";\r
 118                                                         String newTag = ((Anchor) event.getSource()).getText().trim();\r
 119                                                         // insert the new tag only if it is not in the list\r
 120                                                         // already\r
 121                                                         if (existing.indexOf(newTag) == -1 && !existing.trim().endsWith(newTag))\r
 122                                                                 tags.setText(existing.trim()\r
 123                                                                                         + (existing.length() > 0 ? ", " : "")\r
 124                                                                                         + newTag);\r
 125                                                 }\r
 126                                         });\r
 127                                 }\r
 128                         }\r
 129 \r
 130                         @Override\r
 131                         public void onError(Throwable t) {\r
 132                                 GWT.log("", t);\r
 133                                 GSS.get().displayError("Unable to fetch user tags");\r
 134                         }\r
 135                 };\r
 136                 DeferredCommand.addCommand(tc);\r
 137 \r
 138         }\r
 139 \r
 140         /**\r
 141          * Accepts any change and updates the file\r
 142          *\r
 143          */\r
 144         protected abstract void accept();\r
 145 \r
 146         @Override\r
 147         @SuppressWarnings("fallthrough")\r
 148         protected void onPreviewNativeEvent(NativePreviewEvent preview) {\r
 149             super.onPreviewNativeEvent(preview);\r
 150 \r
 151             NativeEvent evt = preview.getNativeEvent();\r
 152             if (evt.getType().equals("keydown"))\r
 153                         // Use the popup's key preview hooks to close the dialog when either\r
 154                           // enter or escape is pressed.\r
 155                           switch (evt.getKeyCode()) {\r
 156                             case KeyCodes.KEY_ENTER:\r
 157                                 accept();\r
 158                             case KeyCodes.KEY_ESCAPE:\r
 159                               closeDialog();\r
 160                               break;\r
 161                           }\r
 162           }\r
 163 \r
 164 \r
 165 \r
 166         public void selectTab(int _tab) {\r
 167                 inner.selectTab(_tab);\r
 168         }\r
 169 \r
 170 \r
 171         /**\r
 172          * Enables IE selection prevention and hides the dialog\r
 173          * (we disable the prevention on creation of the dialog)\r
 174          */\r
 175         public void closeDialog() {\r
 176                 GSS.preventIESelection();\r
 177                 hide();\r
 178         }\r
 179 \r
 180 }\r