Java tutorial
/** * OpenKM, Open Document Management System (http://www.openkm.com) * Copyright (c) 2006-2015 Paco Avila & Josep Llort * * No bytes were intentionally harmed during the development of this application. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package com.openkm.frontend.client.widget.chat; import java.util.ArrayList; import java.util.List; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.DialogBox; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.HTMLTable.CellFormatter; import com.google.gwt.user.client.ui.HasAlignment; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.ScrollPanel; import com.google.gwt.user.client.ui.VerticalPanel; import com.openkm.frontend.client.Main; import com.openkm.frontend.client.bean.GWTUser; import com.openkm.frontend.client.service.OKMChatService; import com.openkm.frontend.client.service.OKMChatServiceAsync; /** * Online popup * * @author jllort * */ public class OnlineUsersPopup extends DialogBox { private final OKMChatServiceAsync chatService = (OKMChatServiceAsync) GWT.create(OKMChatService.class); public static final int ACTION_NONE = -1; public static final int ACTION_NEW_CHAT = 0; public static final int ACTION_ADD_USER_TO_ROOM = 1; private VerticalPanel vPanel; private HorizontalPanel hPanel; private Button cancel; private Button accept; private ExtendedFlexTable table; private ScrollPanel scrollPanel; private int action = ACTION_NONE; private String room = ""; private List<String> usersInChat; /** * Online users popup */ public OnlineUsersPopup() { // Establishes auto-close when click outside super(false, true); setText(Main.i18n("user.online")); usersInChat = new ArrayList<String>(); vPanel = new VerticalPanel(); cancel = new Button(Main.i18n("button.cancel"), new ClickHandler() { @Override public void onClick(ClickEvent event) { hide(); } }); accept = new Button(Main.i18n("button.accept"), new ClickHandler() { @Override public void onClick(ClickEvent event) { executeAction(); } }); hPanel = new HorizontalPanel(); hPanel.add(cancel); HTML space = new HTML(""); hPanel.add(space); hPanel.add(accept); hPanel.setCellWidth(space, "25"); table = new ExtendedFlexTable(); table.setBorderWidth(0); table.setCellPadding(2); table.setCellSpacing(0); table.setWidth("100%"); scrollPanel = new ScrollPanel(table); scrollPanel.setSize("240", "300"); vPanel.add(scrollPanel); vPanel.add(hPanel); vPanel.setCellHeight(scrollPanel, "300"); vPanel.setCellHeight(hPanel, "25"); vPanel.setCellHorizontalAlignment(scrollPanel, HasAlignment.ALIGN_CENTER); vPanel.setCellHorizontalAlignment(hPanel, HasAlignment.ALIGN_CENTER); vPanel.setCellVerticalAlignment(scrollPanel, HasAlignment.ALIGN_MIDDLE); vPanel.setCellVerticalAlignment(hPanel, HasAlignment.ALIGN_MIDDLE); scrollPanel.setStyleName("okm-PanelSelected"); scrollPanel.addStyleName("okm-Input"); table.addStyleName("okm-DisableSelect"); cancel.setStyleName("okm-NoButton"); accept.setStyleName("okm-YesButton"); vPanel.setWidth("250px"); vPanel.setHeight("350px"); super.hide(); setWidget(vPanel); } /** * refreshOnlineUsers */ public void refreshOnlineUsers() { table.removeAllRows(); // Remove all table values enableAcceptButton(); String actualUser = Main.get().workspaceUserProperties.getUser().getId(); for (GWTUser user : Main.get().mainPanel.bottomPanel.userInfo.getConnectedUserList()) { int rows = table.getRowCount(); // Only we add other user than actual UI user connected ( you can not chat yourself ) // Evaluate case new chat or existing chat if (action == ACTION_NEW_CHAT && !user.getId().equals(actualUser)) { table.setHTML(rows, 0, user.getUsername()); table.setHTML(rows, 1, user.getId()); table.getCellFormatter().setVisible(rows, 1, false); table.getRowFormatter().setStyleName(rows, "okm-Table-Row"); setRowWordWarp(rows, 1, false); } else if (!user.getId().equals(actualUser) && !usersInChat.contains(user)) { table.setHTML(rows, 0, user.getUsername()); table.setHTML(rows, 1, user.getId()); table.getCellFormatter().setVisible(rows, 1, false); table.getRowFormatter().setStyleName(rows, "okm-Table-Row"); setRowWordWarp(rows, 1, false); } } } /** * Set the WordWarp for all the row cells * * @param row The row cell * @param columns Number of row columns * @param warp */ private void setRowWordWarp(int row, int columns, boolean warp) { CellFormatter cellFormatter = table.getCellFormatter(); for (int i = 0; i < columns; i++) { cellFormatter.setWordWrap(row, i, warp); } } /** * Language refresh */ public void langRefresh() { cancel.setHTML(Main.i18n("button.cancel")); accept.setHTML(Main.i18n("button.accept")); setText(Main.i18n("user.online")); } /** * enableAcceptButton */ public void enableAcceptButton() { accept.setEnabled((table.getSelectedRow() >= 0)); } /** * createNewChatRoom */ public void createNewChatRoom() { if (table.getSelectedRow() >= 0) { final String user = table.getHTML(table.getSelectedRow(), 1); chatService.createNewChatRoom(user, new AsyncCallback<String>() { @Override public void onSuccess(String result) { ChatRoomPopup chatRoomPopup = new ChatRoomPopup(user, result); chatRoomPopup.center(); chatRoomPopup.getPendingMessage(result); Main.get().mainPanel.bottomPanel.userInfo.addChatRoom(chatRoomPopup); } @Override public void onFailure(Throwable caught) { Main.get().showError("GetCreateNewChatRoom", caught); } }); } } /** * addUserToRoom */ public void addUserToRoom() { if (table.getSelectedRow() >= 0) { String user = table.getHTML(table.getSelectedRow(), 1); chatService.addUserToChatRoom(room, user, new AsyncCallback<Object>() { @Override public void onSuccess(Object result) { } @Override public void onFailure(Throwable caught) { Main.get().showError("AddUserToChatRoom", caught); } }); } } /** * setAction * * @param action */ public void setAction(int action) { setAction(action, ""); } /** * setAction * * @param action */ public void setAction(int action, String room) { this.action = action; this.room = room; } /** * executeAction */ public void executeAction() { hide(); switch (action) { case ACTION_NEW_CHAT: createNewChatRoom(); break; case ACTION_ADD_USER_TO_ROOM: addUserToRoom(); break; } } /** * setUsersInChat * * @param usersInChat */ public void setUsersInChat(List<String> usersInChat) { this.usersInChat = usersInChat; } }