chat/src/chat/client/Index.java

   1 \r
   2 package chat.client;\r
   3 \r
   4 import java.util.List;\r
   5 \r
   6 import com.google.gwt.core.client.EntryPoint;\r
   7 import com.google.gwt.core.client.GWT;\r
   8 import com.google.gwt.event.dom.client.ClickEvent;\r
   9 import com.google.gwt.event.dom.client.ClickHandler;\r
  10 import com.google.gwt.user.client.Window;\r
  11 import com.google.gwt.user.client.rpc.AsyncCallback;\r
  12 import com.google.gwt.user.client.ui.Button;\r
  13 import com.google.gwt.user.client.ui.Grid;\r
  14 import com.google.gwt.user.client.ui.HorizontalPanel;\r
  15 import com.google.gwt.user.client.ui.RootPanel;\r
  16 import com.google.gwt.user.client.ui.TextBox;\r
  17 import com.google.gwt.user.client.ui.VerticalPanel;\r
  18 \r
  19 public class Index implements EntryPoint {\r
  20 \r
  21     private final ChatServiceAsync chatService = GWT.create(ChatService.class);\r
  22 \r
  23     private Grid receiveMessageGrid;\r
  24 \r
  25     private TextBox messageField;\r
  26 \r
  27     private Button sayButton;\r
  28 \r
  29     public void onModuleLoad() {\r
  30         VerticalPanel p1 = new VerticalPanel();\r
  31 \r
  32         this.receiveMessageGrid = new Grid(0, 1);\r
  33         p1.add(this.receiveMessageGrid);\r
  34 \r
  35         HorizontalPanel p2 = new HorizontalPanel();\r
  36         p1.add(p2);\r
  37 \r
  38         this.messageField = new TextBox();\r
  39         this.messageField.setFocus(true);\r
  40         p2.add(this.messageField);\r
  41 \r
  42         this.sayButton = new Button();\r
  43         this.sayButton.setText("Say");\r
  44         this.sayButton.addClickHandler(new ClickHandler() {\r
  45 \r
  46             @Override\r
  47             public void onClick(ClickEvent event) {\r
  48                 Index.this.sayMessage();\r
  49             }\r
  50 \r
  51         });\r
  52         p2.add(this.sayButton);\r
  53 \r
  54         RootPanel.get().add(p1);\r
  55 \r
  56         this.getMessages();\r
  57     }\r
  58 \r
  59     private void sayMessage() {\r
  60         this.chatService.say(this.messageField.getText(), new AsyncCallback<Void>() {\r
  61 \r
  62             @Override\r
  63             public void onSuccess(Void result) {\r
  64             }\r
  65 \r
  66             @Override\r
  67             public void onFailure(Throwable caught) {\r
  68                 Window.alert("error");\r
  69             }\r
  70 \r
  71         });\r
  72 \r
  73         this.messageField.setText("");\r
  74         this.messageField.setFocus(true);\r
  75     }\r
  76 \r
  77     private void getMessages() {\r
  78         this.chatService.getMessage(new AsyncCallback<List<ChatMessageDto>>() {\r
  79 \r
  80             @Override\r
  81             public void onSuccess(List<ChatMessageDto> result) {\r
  82                 for (ChatMessageDto dto : result) {\r
  83                     Index.this.receiveMessageGrid.resize(Index.this.receiveMessageGrid.getRowCount() + 1, 1);\r
  84                     Index.this.receiveMessageGrid.setText(Index.this.receiveMessageGrid.getRowCount() - 1, 0, dto.getMessage());\r
  85                 }\r
  86 \r
  87                 Index.this.getMessages();\r
  88             }\r
  89 \r
  90             @Override\r
  91             public void onFailure(Throwable caught) {\r
  92                 Window.alert("error");\r
  93             }\r
  94 \r
  95         });\r
  96     }\r
  97 \r
  98 }\r