www.pudn.com > java_chat.rar > RoomPanel.java

package at.ac.uni_linz.tk.vchat; 
 
import java.awt.*; 
import java.awt.event.*; 
import java.util.*; 
import java.text.*; 
 
 
/** 
 * A RoomPanel is used for displaying and editing Rser-data. 
 * 
 * @author      Arno Huetter 
 * (C)opyright by the Institute for Computer Science, Telecooperation Department, University of Linz 
 */ 
 
public class RoomPanel extends Panel { 
 
  ChatApplet chatApplet; 
 
  Panel userAccessPanel; 
  FramedPanel namePanel, accessPanel, userListPanel; 
  TextField nameField, administratorField, usersOnlineField; 
  TextArea infoArea, rulesArea; 
  Checkbox privateAccessCheckbox, publicAccessCheckbox; 
  CheckboxGroup accessCheckboxGroup; 
  XList userList; 
 
  Vector invitedUserVector, kickedUserVector; 
 
  private int roomId; 
 
 
/** 
 * Constructs the RoomPanel. 
 * 
 * @param chatParam      the ChatApplet which administrates the 
 *                                Rooms 
 */ 
 
  public RoomPanel(ChatApplet chatParam) { 
 
    super(); 
 
    GridBagConstraints constraints; 
    int listWidth[] = { 100 }; 
    String listHead[] = { "User" }; 
 
    chatApplet = chatParam; 
 
    invitedUserVector = new Vector(); 
    kickedUserVector = new Vector(); 
 
    namePanel = new FramedPanel("Room", ChatRepository.INSETS); 
    namePanel.setLayout(new GridBagLayout()); 
    ChatUtil.addWithBeginningConstraints(namePanel, new Label("Name:", Label.RIGHT)); 
    ChatUtil.addWithRemainingConstraints(namePanel, nameField = new TextField()); 
    ChatUtil.addWithBeginningConstraints(namePanel, new Label("Users online:", Label.RIGHT)); 
    ChatUtil.addWithRemainingConstraints(namePanel, usersOnlineField = new TextField()); 
    ChatUtil.addWithBeginningConstraints(namePanel, new Label("Administrator:", Label.RIGHT)); 
    ChatUtil.addWithRemainingConstraints(namePanel, administratorField = new TextField()); 
    ChatUtil.addWithRemainingConstraints(namePanel, new Label("Info:", Label.LEFT)); 
    ChatUtil.addWithRemainingConstraints(namePanel, infoArea = new TextArea("", 3, 80, TextArea.SCROLLBARS_NONE)); 
    ChatUtil.addWithRemainingConstraints(namePanel, new Label("Rules:", Label.LEFT)); 
    ChatUtil.addWithRemainingConstraints(namePanel, rulesArea = new TextArea("", 5, 80, TextArea.SCROLLBARS_NONE)); 
    administratorField.setEditable(false); 
    usersOnlineField.setEditable(false); 
 
    accessPanel = new FramedPanel("Access", ChatRepository.INSETS); 
    accessPanel.setLayout(new GridBagLayout()); 
    accessCheckboxGroup = new CheckboxGroup(); 
    publicAccessCheckbox = new Checkbox("Public", accessCheckboxGroup, true); 
    privateAccessCheckbox = new Checkbox("Private", accessCheckboxGroup, true); 
    ChatUtil.addWithRemainingConstraints(accessPanel, publicAccessCheckbox); 
    ChatUtil.addWithRemainingConstraints(accessPanel, privateAccessCheckbox); 
 
    userListPanel = new FramedPanel("", ChatRepository.INSETS); 
    userListPanel.setLayout(new BorderLayout()); 
    userListPanel.add(userList = new XList(1), "Center"); 
    userList.setColumnWidths(listWidth); 
    userList.setColumnHeaders(listHead); 
    userList.setSorted(true); 
    userList.setSelectable(false); 
 
    userAccessPanel = new Panel(); 
    userAccessPanel.setLayout(new GridLayout(3, 1)); 
    userAccessPanel.add(accessPanel); 
    userAccessPanel.add(userListPanel); 
    userAccessPanel.add(userListPanel); 
 
    setLayout(new BorderLayout()); 
    setFont(ChatRepository.STANDARD_FONT); 
 
    add(namePanel, "Center"); 
    add(userAccessPanel, "East"); 
  } 
 
 
/** 
 * Toggles the RoomPanel's display depending on if the displayed Room is private or 
 * not. 
 * 
 * @param roomIsPrivate      true, if the Room is private 
 */ 
 
  public void toggleUserPanel(boolean roomIsPrivate) { 
    userListPanel.setTitle(roomIsPrivate ? "Inivited Users" : "Kicked Users"); 
    updateUserList(roomIsPrivate ? invitedUserVector : kickedUserVector); 
  } 
 
 
/** 
 * Forces an update of th Users being display in the XList. Those are th Users who are 
 * either invited to or kicked out of the Room. 
 * 
 * @param userVector      a Vector which contains the names of all Users to be invited 
 *                        or kicked 
 */ 
 
  public void updateUserList(Vector userVector) { 
    Enumeration userEnum; 
    userEnum = userVector.elements(); 
    userList.clear(); 
    while(userEnum.hasMoreElements()) { 
      String[] row = { (String)userEnum.nextElement() }; 
      userList.addRow(row); 
    } 
  } 
 
 
/** 
 * Displays the data of a given Room within the RoomPanel. 
 * 
 * @param roomParam      the Room whose data should be displayed 
 */ 
 
  public void showRoom(Room roomParam) { 
    setRoomId(roomParam.getId()); 
    nameField.setText(roomParam.getName()); 
    usersOnlineField.setText(new Integer(roomParam.getNrOfUsers()).toString()); 
 
    publicAccessCheckbox.setState(!roomParam.isPrivate()); 
    privateAccessCheckbox.setState(roomParam.isPrivate()); 
 
    administratorField.setText(roomParam.getAdministrator()); 
    infoArea.setText(roomParam.getInfo()); 
    rulesArea.setText(roomParam.getRules()); 
 
    invitedUserVector = roomParam.getInvitedUsers(); 
    kickedUserVector = roomParam.getKickedUsers(); 
    toggleUserPanel(roomParam.isPrivate()); 
 
  } 
 
 
/** 
 * Sets the id of the Room currently being shown. 
 * 
 * @param roomIdParam      the id of the Room 
 */ 
 
  private void setRoomId(int roomIdParam) { 
    roomId = roomIdParam; 
  } 
 
 
/** 
 * Returns the id of the Room currently being shown. 
 */ 
 
  public int getRoomId() { 
    return roomId; 
  } 
 
}