code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/MessagePanel.java

   1 /*\r
   2  * Copyright 2007, 2008, 2009 Electronic Business Systems Ltd.\r
   3  *\r
   4  * This file is part of GSS.\r
   5  *\r
   6  * GSS is free software: you can redistribute it and/or modify\r
   7  * it under the terms of the GNU General Public License as published by\r
   8  * the Free Software Foundation, either version 3 of the License, or\r
   9  * (at your option) any later version.\r
  10  *\r
  11  * GSS is distributed in the hope that it will be useful,\r
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14  * GNU General Public License for more details.\r
  15  *\r
  16  * You should have received a copy of the GNU General Public License\r
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.\r
  18  */\r
  19 package gr.ebs.gss.client;\r
  20 \r
  21 import gr.ebs.gss.client.animation.FadeIn;\r
  22 import gr.ebs.gss.client.animation.FadeOut;\r
  23 \r
  24 import com.google.gwt.core.client.GWT;\r
  25 import com.google.gwt.event.dom.client.ClickEvent;\r
  26 import com.google.gwt.event.dom.client.ClickHandler;\r
  27 import com.google.gwt.resources.client.ClientBundle;\r
  28 import com.google.gwt.resources.client.ImageResource;\r
  29 import com.google.gwt.user.client.DOM;\r
  30 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  31 import com.google.gwt.user.client.ui.Composite;\r
  32 import com.google.gwt.user.client.ui.HTML;\r
  33 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  34 import com.google.gwt.user.client.ui.HasVerticalAlignment;\r
  35 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  36 import com.google.gwt.user.client.ui.SimplePanel;\r
  37 \r
  38 /**\r
  39  * A panel that displays various system messages.\r
  40  */\r
  41 public class MessagePanel extends Composite {\r
  42         /**\r
  43          * An image bundle for this widget's images.\r
  44          */\r
  45         public interface Images extends ClientBundle {\r
  46                 @Source("gr/ebs/gss/resources/messagebox_info.png")\r
  47                 ImageResource info();\r
  48 \r
  49                 @Source("gr/ebs/gss/resources/messagebox_warning.png")\r
  50                 ImageResource warn();\r
  51 \r
  52                 @Source("gr/ebs/gss/resources/messagebox_critical.png")\r
  53                 ImageResource error();\r
  54         }\r
  55 \r
  56         /**\r
  57          * The widget's images.\r
  58          */\r
  59         public static Images images;\r
  60 \r
  61         /**\r
  62          * The system message to be displayed.\r
  63          */\r
  64         private HTML message = new HTML("&nbsp;");\r
  65 \r
  66         /**\r
  67          * A link to clear the displayed message.\r
  68          */\r
  69         private HTML clearMessageLink = new HTML("<a class='gss-clearMessage' href='javascript:;'>Clear</a>");\r
  70 \r
  71         /**\r
  72          * The panel that contains the messages.\r
  73          */\r
  74         private HorizontalPanel inner = new HorizontalPanel();\r
  75 \r
  76         /**\r
  77          * The panel that enables special effects for this widget.\r
  78          */\r
  79         private SimplePanel simplePanel = new SimplePanel();\r
  80 \r
  81         /**\r
  82          * The widget's constructor.\r
  83          *\r
  84          * @param newImages a bundle that provides the images for this widget\r
  85          */\r
  86         public MessagePanel(final Images newImages) {\r
  87                 images = newImages;\r
  88                 buildPanel();\r
  89                 simplePanel.setStyleName("effectPanel");\r
  90                 inner.setStyleName("effectPanel-inner");\r
  91                 DOM.setStyleAttribute(simplePanel.getElement(), "zoom", "1");\r
  92                 simplePanel.add(inner);\r
  93                 initWidget(simplePanel);\r
  94         }\r
  95 \r
  96         /**\r
  97          * Build the panel that contains the icon, the message and the 'clear' link.\r
  98          */\r
  99         private void buildPanel() {\r
 100                 inner.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);\r
 101                 inner.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);\r
 102                 inner.setSpacing(4);\r
 103                 inner.add(message);\r
 104                 inner.add(clearMessageLink);\r
 105                 inner.setCellVerticalAlignment(message, HasVerticalAlignment.ALIGN_MIDDLE);\r
 106                 clearMessageLink.addClickHandler(new ClickHandler() {\r
 107 \r
 108                         @Override\r
 109                         public void onClick(ClickEvent event) {\r
 110                                 FadeOut anim = new FadeOut(simplePanel){\r
 111                                         @Override\r
 112                                         protected void onComplete() {\r
 113                                                 super.onComplete();\r
 114                                                 hideMessage();\r
 115                                         }\r
 116                                 };\r
 117                                 anim.run(500);\r
 118                         }\r
 119                 });\r
 120         }\r
 121 \r
 122         /**\r
 123          * Display an error message.\r
 124          *\r
 125          * @param msg the message to display\r
 126          */\r
 127         public void displayError(final String msg) {\r
 128                 GWT.log(msg, null);\r
 129                 message = new HTML("<table class='gss-errorMessage'><tr><td>" + AbstractImagePrototype.create(images.error()).getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 130                 message.addClickHandler(new ClickHandler() {\r
 131 \r
 132                         @Override\r
 133                         public void onClick(ClickEvent event) {\r
 134                                 FadeOut anim = new FadeOut(simplePanel){\r
 135 \r
 136                                         @Override\r
 137                                         protected void onComplete() {\r
 138                                                 super.onComplete();\r
 139                                                 hideMessage();\r
 140                                         }\r
 141                                 };\r
 142                                 anim.run(500);\r
 143                         }\r
 144                 });\r
 145                 buildPanel();\r
 146                 setVisible(true);\r
 147                 FadeIn anim = new FadeIn(simplePanel);\r
 148                 anim.run(500);\r
 149         }\r
 150 \r
 151         /**\r
 152          * Display a warning message.\r
 153          *\r
 154          * @param msg the message to display\r
 155          */\r
 156         public void displayWarning(final String msg) {\r
 157                 message = new HTML("<table class='gss-warnMessage'><tr><td>" + AbstractImagePrototype.create(images.warn()).getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 158                 message.addClickHandler(new ClickHandler() {\r
 159 \r
 160                         @Override\r
 161                         public void onClick(ClickEvent event) {\r
 162                                 FadeOut anim = new FadeOut(simplePanel){\r
 163 \r
 164                                         @Override\r
 165                                         protected void onComplete() {\r
 166                                                 super.onComplete();\r
 167                                                 hideMessage();\r
 168                                         }\r
 169                                 };\r
 170                                 anim.run(500);\r
 171                         }\r
 172                 });\r
 173 \r
 174                 buildPanel();\r
 175                 setVisible(true);\r
 176                 FadeIn anim = new FadeIn(simplePanel);\r
 177                 anim.run(500);\r
 178         }\r
 179 \r
 180         /**\r
 181          * Display an informational message.\r
 182          *\r
 183          * @param msg the message to display\r
 184          */\r
 185         public void displayInformation(final String msg) {\r
 186                 message = new HTML("<table class='gss-infoMessage'><tr><td>" + AbstractImagePrototype.create(images.info()).getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 187                 message.addClickHandler(new ClickHandler() {\r
 188 \r
 189                         @Override\r
 190                         public void onClick(ClickEvent event) {\r
 191                                 FadeOut anim = new FadeOut(simplePanel){\r
 192 \r
 193                                         @Override\r
 194                                         protected void onComplete() {\r
 195                                                 super.onComplete();\r
 196                                                 hideMessage();\r
 197                                         }\r
 198                                 };\r
 199                                 anim.run(500);\r
 200                         }\r
 201                 });\r
 202 \r
 203                 buildPanel();\r
 204                 setVisible(true);\r
 205                 FadeIn anim = new FadeIn(simplePanel);\r
 206                 anim.run(500);\r
 207         }\r
 208 \r
 209         /**\r
 210          * Clear the displayed message and hide the panel.\r
 211          */\r
 212         public void hideMessage() {\r
 213                 inner.clear();\r
 214                 message = new HTML("&nbsp;");\r
 215                 this.setVisible(false);\r
 216         }\r
 217 \r
 218 }\r