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

   1 /*\r
   2  * Copyright (c) 2011 Greek Research and Technology Network\r
   3  */\r
   4 package gr.grnet.pithos.web.client;\r
   5 \r
   6 import gr.grnet.pithos.web.client.animation.FadeIn;\r
   7 import gr.grnet.pithos.web.client.animation.FadeOut;\r
   8 \r
   9 import com.google.gwt.core.client.GWT;\r
  10 import com.google.gwt.event.dom.client.ClickEvent;\r
  11 import com.google.gwt.event.dom.client.ClickHandler;\r
  12 import com.google.gwt.resources.client.ClientBundle;\r
  13 import com.google.gwt.resources.client.ImageResource;\r
  14 import com.google.gwt.user.client.DOM;\r
  15 import com.google.gwt.user.client.ui.AbstractImagePrototype;\r
  16 import com.google.gwt.user.client.ui.Composite;\r
  17 import com.google.gwt.user.client.ui.HTML;\r
  18 import com.google.gwt.user.client.ui.HasHorizontalAlignment;\r
  19 import com.google.gwt.user.client.ui.HasVerticalAlignment;\r
  20 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  21 import com.google.gwt.user.client.ui.SimplePanel;\r
  22 \r
  23 /**\r
  24  * A panel that displays various system messages.\r
  25  */\r
  26 public class MessagePanel extends Composite {\r
  27         /**\r
  28          * An image bundle for this widget's images.\r
  29          */\r
  30         public interface Images extends ClientBundle {\r
  31                 @Source("gr/grnet/pithos/resources/messagebox_info.png")\r
  32                 ImageResource info();\r
  33 \r
  34                 @Source("gr/grnet/pithos/resources/messagebox_warning.png")\r
  35                 ImageResource warn();\r
  36 \r
  37                 @Source("gr/grnet/pithos/resources/messagebox_critical.png")\r
  38                 ImageResource error();\r
  39         }\r
  40 \r
  41         /**\r
  42          * The widget's images.\r
  43          */\r
  44         public static Images images;\r
  45 \r
  46         /**\r
  47          * The system message to be displayed.\r
  48          */\r
  49         private HTML message = new HTML("&nbsp;");\r
  50 \r
  51         /**\r
  52          * A link to clear the displayed message.\r
  53          */\r
  54         private HTML clearMessageLink = new HTML("<a class='pithos-clearMessage' href='javascript:;'>Clear</a>");\r
  55 \r
  56         /**\r
  57          * The panel that contains the messages.\r
  58          */\r
  59         private HorizontalPanel inner = new HorizontalPanel();\r
  60 \r
  61         /**\r
  62          * The panel that enables special effects for this widget.\r
  63          */\r
  64         private SimplePanel simplePanel = new SimplePanel();\r
  65 \r
  66         /**\r
  67          * The widget's constructor.\r
  68          *\r
  69          * @param newImages a bundle that provides the images for this widget\r
  70          */\r
  71         public MessagePanel(final Images newImages) {\r
  72                 images = newImages;\r
  73                 buildPanel();\r
  74                 simplePanel.setStyleName("effectPanel");\r
  75                 inner.setStyleName("effectPanel-inner");\r
  76                 DOM.setStyleAttribute(simplePanel.getElement(), "zoom", "1");\r
  77                 simplePanel.add(inner);\r
  78                 initWidget(simplePanel);\r
  79         }\r
  80 \r
  81         /**\r
  82          * Build the panel that contains the icon, the message and the 'clear' link.\r
  83          */\r
  84         private void buildPanel() {\r
  85                 inner.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);\r
  86                 inner.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);\r
  87                 inner.setSpacing(4);\r
  88                 inner.add(message);\r
  89                 inner.add(clearMessageLink);\r
  90                 inner.setCellVerticalAlignment(message, HasVerticalAlignment.ALIGN_MIDDLE);\r
  91                 clearMessageLink.addClickHandler(new ClickHandler() {\r
  92 \r
  93                         @Override\r
  94                         public void onClick(ClickEvent event) {\r
  95                                 FadeOut anim = new FadeOut(simplePanel){\r
  96                                         @Override\r
  97                                         protected void onComplete() {\r
  98                                                 super.onComplete();\r
  99                                                 hideMessage();\r
 100                                         }\r
 101                                 };\r
 102                                 anim.run(500);\r
 103                         }\r
 104                 });\r
 105         }\r
 106 \r
 107         /**\r
 108          * Display an error message.\r
 109          *\r
 110          * @param msg the message to display\r
 111          */\r
 112         public void displayError(final String msg) {\r
 113                 GWT.log(msg, null);\r
 114                 message = new HTML("<table class='pithos-errorMessage'><tr><td>" + AbstractImagePrototype.create(images.error()).getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 115                 message.addClickHandler(new ClickHandler() {\r
 116 \r
 117                         @Override\r
 118                         public void onClick(ClickEvent event) {\r
 119                                 FadeOut anim = new FadeOut(simplePanel){\r
 120 \r
 121                                         @Override\r
 122                                         protected void onComplete() {\r
 123                                                 super.onComplete();\r
 124                                                 hideMessage();\r
 125                                         }\r
 126                                 };\r
 127                                 anim.run(500);\r
 128                         }\r
 129                 });\r
 130                 buildPanel();\r
 131                 setVisible(true);\r
 132                 FadeIn anim = new FadeIn(simplePanel);\r
 133                 anim.run(500);\r
 134         }\r
 135 \r
 136         /**\r
 137          * Display a warning message.\r
 138          *\r
 139          * @param msg the message to display\r
 140          */\r
 141         public void displayWarning(final String msg) {\r
 142                 message = new HTML("<table class='pithos-warnMessage'><tr><td>" + AbstractImagePrototype.create(images.warn()).getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 143                 message.addClickHandler(new ClickHandler() {\r
 144 \r
 145                         @Override\r
 146                         public void onClick(ClickEvent event) {\r
 147                                 FadeOut anim = new FadeOut(simplePanel){\r
 148 \r
 149                                         @Override\r
 150                                         protected void onComplete() {\r
 151                                                 super.onComplete();\r
 152                                                 hideMessage();\r
 153                                         }\r
 154                                 };\r
 155                                 anim.run(500);\r
 156                         }\r
 157                 });\r
 158 \r
 159                 buildPanel();\r
 160                 setVisible(true);\r
 161                 FadeIn anim = new FadeIn(simplePanel);\r
 162                 anim.run(500);\r
 163         }\r
 164 \r
 165         /**\r
 166          * Display an informational message.\r
 167          *\r
 168          * @param msg the message to display\r
 169          */\r
 170         public void displayInformation(final String msg) {\r
 171                 message = new HTML("<table class='pithos-infoMessage'><tr><td>" + AbstractImagePrototype.create(images.info()).getHTML() + "</td><td>" + msg + "</td></tr></table>");\r
 172                 message.addClickHandler(new ClickHandler() {\r
 173 \r
 174                         @Override\r
 175                         public void onClick(ClickEvent event) {\r
 176                                 FadeOut anim = new FadeOut(simplePanel){\r
 177 \r
 178                                         @Override\r
 179                                         protected void onComplete() {\r
 180                                                 super.onComplete();\r
 181                                                 hideMessage();\r
 182                                         }\r
 183                                 };\r
 184                                 anim.run(500);\r
 185                         }\r
 186                 });\r
 187 \r
 188                 buildPanel();\r
 189                 setVisible(true);\r
 190                 FadeIn anim = new FadeIn(simplePanel);\r
 191                 anim.run(500);\r
 192         }\r
 193 \r
 194         /**\r
 195          * Clear the displayed message and hide the panel.\r
 196          */\r
 197         public void hideMessage() {\r
 198                 inner.clear();\r
 199                 message = new HTML("&nbsp;");\r
 200                 this.setVisible(false);\r
 201         }\r
 202 \r
 203 }\r