code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/MessagePanel.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.animation.FadeIn;\r
  38 import gr.grnet.pithos.web.client.animation.FadeOut;\r
  39 \r
  40 import com.google.gwt.core.client.GWT;\r
  41 import com.google.gwt.event.dom.client.ClickEvent;\r
  42 import com.google.gwt.event.dom.client.ClickHandler;\r
  43 import com.google.gwt.resources.client.ClientBundle;\r
  44 import com.google.gwt.resources.client.ImageResource;\r
  45 import com.google.gwt.user.client.DOM;\r
  46 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  47 import com.google.gwt.user.client.ui.Composite;\r
  48 import com.google.gwt.user.client.ui.HTML;\r
  49 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  50 import com.google.gwt.user.client.ui.HasVerticalAlignment;\r
  51 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  52 import com.google.gwt.user.client.ui.SimplePanel;\r
  53 \r
  54 /**\r
  55  * A panel that displays various system messages.\r
  56  */\r
  57 public class MessagePanel extends Composite {\r
  58         /**\r
  59          * An image bundle for this widget's images.\r
  60          */\r
  61         public interface Images extends ClientBundle {\r
  62                 @Source("gr/grnet/pithos/resources/messagebox_info.png")\r
  63                 ImageResource info();\r
  64 \r
  65                 @Source("gr/grnet/pithos/resources/messagebox_warning.png")\r
  66                 ImageResource warn();\r
  67 \r
  68                 @Source("gr/grnet/pithos/resources/messagebox_critical.png")\r
  69                 ImageResource error();\r
  70         }\r
  71 \r
  72         /**\r
  73          * The widget's images.\r
  74          */\r
  75         public static Images images;\r
  76 \r
  77         /**\r
  78          * The system message to be displayed.\r
  79          */\r
  80         private HTML message = new HTML("&nbsp;");\r
  81 \r
  82         /**\r
  83          * A link to clear the displayed message.\r
  84          */\r
  85         private HTML clearMessageLink = new HTML("<a class='pithos-clearMessage' href='javascript:;'>Clear</a>");\r
  86 \r
  87         /**\r
  88          * The panel that contains the messages.\r
  89          */\r
  90         private HorizontalPanel inner = new HorizontalPanel();\r
  91 \r
  92         /**\r
  93          * The panel that enables special effects for this widget.\r
  94          */\r
  95         protected SimplePanel simplePanel = new SimplePanel();\r
  96 \r
  97         /**\r
  98          * The widget's constructor.\r
  99          *\r
 100          * @param newImages a bundle that provides the images for this widget\r
 101          */\r
 102         public MessagePanel(final Images newImages) {\r
 103                 images = newImages;\r
 104                 buildPanel();\r
 105                 simplePanel.setStyleName("effectPanel");\r
 106                 inner.setStyleName("effectPanel-inner");\r
 107                 DOM.setStyleAttribute(simplePanel.getElement(), "zoom", "1");\r
 108                 simplePanel.add(inner);\r
 109                 initWidget(simplePanel);\r
 110         }\r
 111 \r
 112         /**\r
 113          * Build the panel that contains the icon, the message and the 'clear' link.\r
 114          */\r
 115         private void buildPanel() {\r
 116                 inner.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);\r
 117                 inner.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);\r
 118                 inner.setSpacing(4);\r
 119                 inner.add(message);\r
 120                 inner.add(clearMessageLink);\r
 121                 inner.setCellVerticalAlignment(message, HasVerticalAlignment.ALIGN_MIDDLE);\r
 122                 clearMessageLink.addClickHandler(new ClickHandler() {\r
 123 \r
 124                         @Override\r
 125                         public void onClick(@SuppressWarnings("unused") ClickEvent event) {\r
 126                                 FadeOut anim = new FadeOut(simplePanel){\r
 127                                         @Override\r
 128                                         protected void onComplete() {\r
 129                                                 super.onComplete();\r
 130                                                 hideMessage();\r
 131                                         }\r
 132                                 };\r
 133                                 anim.run(500);\r
 134                         }\r
 135                 });\r
 136         }\r
 137 \r
 138         /**\r
 139          * Display an error message.\r
 140          *\r
 141          * @param msg the message to display\r
 142          */\r
 143         public void displayError(final String msg) {\r
 144                 GWT.log(msg, null);\r
 145                 message = new HTML("<table class='pithos-errorMessage'><tr><td>" + AbstractImagePrototype.create(images.error()).getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 146                 message.addClickHandler(new ClickHandler() {\r
 147 \r
 148                         @Override\r
 149                         public void onClick(@SuppressWarnings("unused") ClickEvent event) {\r
 150                                 FadeOut anim = new FadeOut(simplePanel){\r
 151 \r
 152                                         @Override\r
 153                                         protected void onComplete() {\r
 154                                                 super.onComplete();\r
 155                                                 hideMessage();\r
 156                                         }\r
 157                                 };\r
 158                                 anim.run(500);\r
 159                         }\r
 160                 });\r
 161                 buildPanel();\r
 162                 setVisible(true);\r
 163                 FadeIn anim = new FadeIn(simplePanel);\r
 164                 anim.run(500);\r
 165         }\r
 166 \r
 167         /**\r
 168          * Display a warning message.\r
 169          *\r
 170          * @param msg the message to display\r
 171          */\r
 172         public void displayWarning(final String msg) {\r
 173                 message = new HTML("<table class='pithos-warnMessage'><tr><td>" + AbstractImagePrototype.create(images.warn()).getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 174                 message.addClickHandler(new ClickHandler() {\r
 175 \r
 176                         @Override\r
 177                         public void onClick(@SuppressWarnings("unused") ClickEvent event) {\r
 178                                 FadeOut anim = new FadeOut(simplePanel){\r
 179 \r
 180                                         @Override\r
 181                                         protected void onComplete() {\r
 182                                                 super.onComplete();\r
 183                                                 hideMessage();\r
 184                                         }\r
 185                                 };\r
 186                                 anim.run(500);\r
 187                         }\r
 188                 });\r
 189 \r
 190                 buildPanel();\r
 191                 setVisible(true);\r
 192                 FadeIn anim = new FadeIn(simplePanel);\r
 193                 anim.run(500);\r
 194         }\r
 195 \r
 196         /**\r
 197          * Display an informational message.\r
 198          *\r
 199          * @param msg the message to display\r
 200          */\r
 201         public void displayInformation(final String msg) {\r
 202                 message = new HTML("<table class='pithos-infoMessage'><tr><td>" + AbstractImagePrototype.create(images.info()).getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 203                 message.addClickHandler(new ClickHandler() {\r
 204 \r
 205                         @Override\r
 206                         public void onClick(@SuppressWarnings("unused") ClickEvent event) {\r
 207                                 FadeOut anim = new FadeOut(simplePanel){\r
 208 \r
 209                                         @Override\r
 210                                         protected void onComplete() {\r
 211                                                 super.onComplete();\r
 212                                                 hideMessage();\r
 213                                         }\r
 214                                 };\r
 215                                 anim.run(500);\r
 216                         }\r
 217                 });\r
 218 \r
 219                 buildPanel();\r
 220                 setVisible(true);\r
 221                 FadeIn anim = new FadeIn(simplePanel);\r
 222                 anim.run(500);\r
 223         }\r
 224 \r
 225         /**\r
 226          * Clear the displayed message and hide the panel.\r
 227          */\r
 228         public void hideMessage() {\r
 229                 inner.clear();\r
 230                 message = new HTML("&nbsp;");\r
 231                 this.setVisible(false);\r
 232         }\r
 233 \r
 234 }\r