/*

 * Copyright (c) 2008-2010, Matthias Mann

 *

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 *     * Redistributions of source code must retain the above copyright notice,

 *       this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above copyright

 *       notice, this list of conditions and the following disclaimer in the

 *       documentation and/or other materials provided with the distribution.

 *     * Neither the name of Matthias Mann nor the names of its contributors may

 *       be used to endorse or promote products derived from this software

 *       without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

package chat;

import de.matthiasmann.twl.DesktopArea;

import de.matthiasmann.twl.DialogLayout;

import de.matthiasmann.twl.EditField;

import de.matthiasmann.twl.Event;

import de.matthiasmann.twl.FPSCounter;

import de.matthiasmann.twl.GUI;

import de.matthiasmann.twl.ResizableFrame;

import de.matthiasmann.twl.ScrollPane;

import de.matthiasmann.twl.TextArea;

import de.matthiasmann.twl.textarea.HTMLTextAreaModel;

import de.matthiasmann.twl.renderer.lwjgl.LWJGLRenderer;

import de.matthiasmann.twl.theme.ThemeManager;

import org.lwjgl.Sys;

import org.lwjgl.opengl.Display;

import org.lwjgl.opengl.DisplayMode;

import org.lwjgl.opengl.GL11;

import test.TestUtils;

/**

 * A chat demo

 *

 * This class also acts as root pane

 *

 * @author Matthias Mann

 */

public class ChatDemo extends DesktopArea {

    public static void main(String[] args) {

        try {

            Display.setDisplayMode(new DisplayMode(800, 600));

            Display.create();

            Display.setTitle("TWL Chat Demo");

            Display.setVSyncEnabled(true);

            LWJGLRenderer renderer = new LWJGLRenderer();

            ChatDemo chat = new ChatDemo();

            GUI gui = new GUI(chat, renderer);

            ThemeManager theme = ThemeManager.createThemeManager(

                    ChatDemo.class.getResource("chat.xml"), renderer);

            gui.applyTheme(theme);

            while(!Display.isCloseRequested() && !chat.quit) {

                GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);

                gui.update();

                Display.update();

                TestUtils.reduceInputLag();

            }

            gui.destroy();

            theme.destroy();

        } catch (Exception ex) {

            TestUtils.showErrMsg(ex);

        }

        Display.destroy();

    }

    private final FPSCounter fpsCounter;

    private final ChatFrame chatFrame;

    public boolean quit;

    public ChatDemo() {

        fpsCounter = new FPSCounter();

        add(fpsCounter);

        chatFrame = new ChatFrame();

        add(chatFrame);

        chatFrame.setSize(400, 200);

        chatFrame.setPosition(10, 350);

    }

    @Override

    protected void layout() {

        super.layout();

        // fpsCounter is bottom right

        fpsCounter.adjustSize();

        fpsCounter.setPosition(

                getInnerWidth() - fpsCounter.getWidth(),

                getInnerHeight() - fpsCounter.getHeight());

    }

    @Override

    protected boolean handleEvent(Event evt) {

        if(super.handleEvent(evt)) {

            return true;

        }

        switch (evt.getType()) {

            case KEY_PRESSED:

                switch (evt.getKeyCode()) {

                    case Event.KEY_ESCAPE:

                        quit = true;

                        return true;

                }

        }

        return false;

    }

    static class ChatFrame extends ResizableFrame {

        private final StringBuilder sb;

        private final HTMLTextAreaModel textAreaModel;

        private final TextArea textArea;

        private final EditField editField;

        private final ScrollPane scrollPane;

        private int curColor;

        public ChatFrame() {

            setTitle("Chat");

            this.sb = new StringBuilder();

            this.textAreaModel = new HTMLTextAreaModel();

            this.textArea = new TextArea(textAreaModel);

            this.editField = new EditField();

            editField.addCallback(new EditField.Callback() {

                public void callback(int key) {

                    if(key == Event.KEY_RETURN) {

                        // cycle through 3 different colors/font styles

                        appendRow("color"+curColor, editField.getText());

                        editField.setText("");

                        curColor = (curColor + 1) % 3;

                    }

                }

            });

            textArea.addCallback(new TextArea.Callback() {

                public void handleLinkClicked(String href) {

                    Sys.openURL(href);

                }

            });

            scrollPane = new ScrollPane(textArea);

            scrollPane.setFixed(ScrollPane.Fixed.HORIZONTAL);

            DialogLayout l = new DialogLayout();

            l.setTheme("content");

            l.setHorizontalGroup(l.createParallelGroup(scrollPane, editField));

            l.setVerticalGroup(l.createSequentialGroup(scrollPane, editField));

            add(l);

            appendRow("default", "Welcome to the chat demo. Type your messages below :)");

        }

        private void appendRow(String font, String text) {

            sb.append("<div style=\"word-wrap: break-word; font-family: ").append(font).append("; \">");

            // not efficient but simple

            for(int i=0,l=text.length() ; i<l ; i++) {

                char ch = text.charAt(i);

                switch(ch) {

                    case '<': sb.append("&lt;"); break;

                    case '>': sb.append(">"); break;

                    case '&': sb.append("&"); break;

                    case '"': sb.append("""); break;

                    case ':':

                        if(text.startsWith(":)", i)) {

                            sb.append("<img src=\"smiley\" alt=\":)\"/>");

                            i += 1; // skip one less because of i++ in the for loop

                            break;

                        }

                        sb.append(ch);

                        break;

                    case 'h':

                        if(text.startsWith("http://", i)) {

                            int end = i + 7;

                            while(end < l && isURLChar(text.charAt(end))) {

                                end++;

                            }

                            String href = text.substring(i, end);

                            sb.append("<a style=\"font: link\" href=\"").append(href)

                                    .append("\" >").append(href)

                                    .append("</a>");

                            i = end - 1; // skip one less because of i++ in the for loop

                            break;

                        }

                        // fall through:

                    default:

                        sb.append(ch);

                }

            }

            sb.append("</div>");

            boolean isAtEnd = scrollPane.getMaxScrollPosY() == scrollPane.getScrollPositionY();

            textAreaModel.setHtml(sb.toString());

            if(isAtEnd) {

                scrollPane.validateLayout();

                scrollPane.setScrollPositionY(scrollPane.getMaxScrollPosY());

            }

        }

        private boolean isURLChar(char ch) {

            return (ch == '.') || (ch == '/') || (ch == '%') ||

                    (ch >= '0' && ch <= '9') ||

                    (ch >= 'a' && ch <= 'z') ||

                    (ch >= 'A' && ch <= 'Z');

        }

    }

}