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.user.client.DOM;\r
  26 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  27 import com.google.gwt.user.client.ui.ClickListener;\r
  28 import com.google.gwt.user.client.ui.Composite;\r
  29 import com.google.gwt.user.client.ui.HTML;\r
  30 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  31 import com.google.gwt.user.client.ui.HasVerticalAlignment;\r
  32 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  33 import com.google.gwt.user.client.ui.ImageBundle;\r
  34 import com.google.gwt.user.client.ui.SimplePanel;\r
  35 import com.google.gwt.user.client.ui.Widget;\r
  36 \r
  37 /**\r
  38  * A panel that displays various system messages.\r
  39  */\r
  40 public class MessagePanel extends Composite {\r
  41         /**\r
  42          * An image bundle for this widget's images.\r
  43          */\r
  44         public interface Images extends ImageBundle {\r
  45                 @Resource("gr/ebs/gss/resources/messagebox_info.png")\r
  46                 AbstractImagePrototype info();\r
  47 \r
  48                 @Resource("gr/ebs/gss/resources/messagebox_warning.png")\r
  49                 AbstractImagePrototype warn();\r
  50 \r
  51                 @Resource("gr/ebs/gss/resources/messagebox_critical.png")\r
  52                 AbstractImagePrototype error();\r
  53         }\r
  54 \r
  55         /**\r
  56          * The widget's images.\r
  57          */\r
  58         public static Images images;\r
  59 \r
  60         /**\r
  61          * The system message to be displayed.\r
  62          */\r
  63         private HTML message = new HTML("&nbsp;");\r
  64 \r
  65         /**\r
  66          * A link to clear the displayed message.\r
  67          */\r
  68         private HTML clearMessageLink = new HTML("<a class='gss-clearMessage' href='javascript:;'>Clear</a>");\r
  69 \r
  70         /**\r
  71          * The panel that contains the messages.\r
  72          */\r
  73         private HorizontalPanel inner = new HorizontalPanel();\r
  74 \r
  75         /**\r
  76          * The panel that enables special effects for this widget.\r
  77          */\r
  78         private SimplePanel simplePanel = new SimplePanel();\r
  79 \r
  80         /**\r
  81          * The widget's constructor.\r
  82          *\r
  83          * @param newImages a bundle that provides the images for this widget\r
  84          */\r
  85         public MessagePanel(final Images newImages) {\r
  86                 images = newImages;\r
  87                 buildPanel();\r
  88                 simplePanel.setStyleName("effectPanel");\r
  89                 inner.setStyleName("effectPanel-inner");\r
  90                 DOM.setStyleAttribute(simplePanel.getElement(), "zoom", "1");\r
  91                 simplePanel.add(inner);\r
  92                 initWidget(simplePanel);\r
  93         }\r
  94 \r
  95         /**\r
  96          * Build the panel that contains the icon, the message and the 'clear' link.\r
  97          */\r
  98         private void buildPanel() {\r
  99                 inner.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);\r
 100                 inner.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);\r
 101                 inner.setSpacing(4);\r
 102                 inner.add(message);\r
 103                 inner.add(clearMessageLink);\r
 104                 inner.setCellVerticalAlignment(message, HasVerticalAlignment.ALIGN_MIDDLE);\r
 105 \r
 106                 clearMessageLink.addClickListener(new ClickListener() {\r
 107 \r
 108                         public void onClick(final Widget sender) {\r
 109                                 FadeOut anim = new FadeOut(simplePanel){\r
 110                                         @Override\r
 111                                         protected void onComplete() {\r
 112                                                 super.onComplete();\r
 113                                                 hideMessage();\r
 114                                         }\r
 115                                 };\r
 116                                 anim.run(1000);\r
 117                         }\r
 118                 });\r
 119         }\r
 120 \r
 121         /**\r
 122          * Display an error message.\r
 123          *\r
 124          * @param msg the message to display\r
 125          */\r
 126         public void displayError(final String msg) {\r
 127                 GWT.log(msg, null);\r
 128                 message = new HTML("<table class='gss-errorMessage'><tr><td>" + images.error().getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 129                 message.addClickListener(new ClickListener() {\r
 130 \r
 131                         public void onClick(final Widget sender) {\r
 132                                 FadeOut anim = new FadeOut(simplePanel){\r
 133 \r
 134                                         @Override\r
 135                                         protected void onComplete() {\r
 136                                                 super.onComplete();\r
 137                                                 hideMessage();\r
 138                                         }\r
 139                                 };\r
 140                                 anim.run(1000);\r
 141                         }\r
 142                 });\r
 143                 buildPanel();\r
 144                 setVisible(true);\r
 145                 FadeIn anim = new FadeIn(simplePanel);\r
 146                 anim.run(1000);\r
 147         }\r
 148 \r
 149         /**\r
 150          * Display a warning message.\r
 151          *\r
 152          * @param msg the message to display\r
 153          */\r
 154         public void displayWarning(final String msg) {\r
 155                 message = new HTML("<table class='gss-warnMessage'><tr><td>" + images.warn().getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 156                 message.addClickListener(new ClickListener() {\r
 157 \r
 158                         public void onClick(final Widget sender) {\r
 159                                 FadeOut anim = new FadeOut(simplePanel){\r
 160 \r
 161                                         @Override\r
 162                                         protected void onComplete() {\r
 163                                                 super.onComplete();\r
 164                                                 hideMessage();\r
 165                                         }\r
 166                                 };\r
 167                                 anim.run(1000);\r
 168                         }\r
 169                 });\r
 170 \r
 171                 buildPanel();\r
 172                 setVisible(true);\r
 173                 FadeIn anim = new FadeIn(simplePanel);\r
 174                 anim.run(1000);\r
 175         }\r
 176 \r
 177         /**\r
 178          * Display an informational message.\r
 179          *\r
 180          * @param msg the message to display\r
 181          */\r
 182         public void displayInformation(final String msg) {\r
 183                 message = new HTML("<table class='gss-infoMessage'><tr><td>" + images.info().getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 184                 message.addClickListener(new ClickListener() {\r
 185 \r
 186                         public void onClick(final Widget sender) {\r
 187                                 FadeOut anim = new FadeOut(simplePanel){\r
 188 \r
 189                                         @Override\r
 190                                         protected void onComplete() {\r
 191                                                 super.onComplete();\r
 192                                                 hideMessage();\r
 193                                         }\r
 194                                 };\r
 195                                 anim.run(1000);\r
 196                         }\r
 197                 });\r
 198 \r
 199                 buildPanel();\r
 200                 setVisible(true);\r
 201                 FadeIn anim = new FadeIn(simplePanel);\r
 202                 anim.run(1000);\r
 203         }\r
 204 \r
 205         /**\r
 206          * Clear the displayed message and hide the panel.\r
 207          */\r
 208         public void hideMessage() {\r
 209                 inner.clear();\r
 210                 message = new HTML("&nbsp;");\r
 211                 this.setVisible(false);\r
 212         }\r
 213 \r
 214 }\r