Android Open Source - BerryTube Chat Message Formatter

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License

The source code is released under:
GNU General Public License
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Java Source Code

/*
 * BerryTubeChat android client/*w ww  .  j  av  a  2s  . co  m*/
 * Copyright (C) 2012-2013 Daniel Triendl <trellmor@trellmor.com>
 * 
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
package com.trellmor.berrytubechat;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.preference.PreferenceManager;
import android.text.Html;
import android.text.Spanned;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;

import com.trellmor.berrymotes.EmotesFormatter;
import com.trellmor.berrytube.ChatMessage;
import com.trellmor.berrytube.ChatUser;

/**
 * This class is used to inflate and populate a <code>View</code> to display a
 * <code>ChatMessage</code>
 * 
 * @author Daniel Triendl
 * @see com.trellmor.berrytube.ChatMessage
 */
class ChatMessageFormatter {
  private Context mContext = null;
  private LayoutInflater mInflater = null;
  private FlairGetter mFlairGetter = null;
  private String mNick = null;
  private final ChatMessageAdapter mAdapter;
  private final EmotesFormatter mEmotesFormatter;

  public ChatMessageFormatter(ChatMessageAdapter adapter, Context context) {
    mAdapter = adapter;
    mContext = context;
    mInflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    mFlairGetter = new FlairGetter(mContext);
    mEmotesFormatter = new EmotesFormatter(mContext);
  }

  public View format(View view, ChatMessage message) {

    switch (message.getEmote()) {
    case ChatMessage.EMOTE_DRINK:
      return formatDrinks(view, message);
    case ChatMessage.EMOTE_ACT:
    case ChatMessage.EMOTE_REQUEST:
    case ChatMessage.EMOTE_POLL:
    case ChatMessage.EMOTE_RCV:
    case ChatMessage.EMOTE_SPOILER:
      return formatEmote(view, message);
    default:
      return formatDefault(view, message);
    }
  }

  public void setNick(String nick) {
    mNick = nick;
  }

  private View formatDrinks(View view, ChatMessage message) {
    if (view == null || view.getId() != R.id.chat_item_drink
        || containsBerryMotes(message.getMsg())) {
      view = mInflater.inflate(R.layout.chat_item_drink, null);
      view.setTag(R.id.text_chat_message,
          view.findViewById(R.id.text_chat_message));
      view.setTag(R.id.text_chat_drink_multiple,
          view.findViewById(R.id.text_chat_drink_multiple));
    }

    TextView textMessage = (TextView) view.getTag(R.id.text_chat_message);
    TextView textMulti = (TextView) view
        .getTag(R.id.text_chat_drink_multiple);

    String m = message.getNick() + ": "
        + formatBerryMotes(message.getMsg()) + " "
        + mContext.getString(R.string.chat_drink);

    textMessage.setText(Html.fromHtml(m, mFlairGetter, null));

    if (message.getMulti() > 1) {
      textMulti.setText(Integer.toString(message.getMulti()) + "x");
      textMulti.setVisibility(View.VISIBLE);
    } else {
      textMulti.setVisibility(View.GONE);
    }

    return view;
  }

  private View inflateDefault(View view, String message) {
    if (view == null || view.getId() != R.id.text_chat_message || containsBerryMotes(message)) {
      view = mInflater.inflate(R.layout.chat_item, null);
      view.setTag(R.id.text_chat_message,
          view.findViewById(R.id.text_chat_message));
    } else {
      TextView textMessage = (TextView) view
          .getTag(R.id.text_chat_message);
      textMessage.setTextAppearance(mContext,
          android.R.style.TextAppearance_Small);
      textMessage.setGravity(Gravity.LEFT);
    }

    return view;
  }

  private View formatDefault(View view, ChatMessage message) {
    view = inflateDefault(view, message.getMsg());
    TextView textMessage = (TextView) view.getTag(R.id.text_chat_message);

    textMessage.setText(formatChatMsg(message));

    return view;
  }

  private View formatEmote(View view, ChatMessage message) {

    view = inflateDefault(view, message.getMsg());
    TextView textMessage = (TextView) view.getTag(R.id.text_chat_message);

    switch (message.getEmote()) {
    case ChatMessage.EMOTE_REQUEST:
      textMessage.setTextColor(Color.BLUE);
      textMessage.setText(Html.fromHtml(createTimestamp(message
          .getTimestamp())
          + "<b><i>"
          + message.getNick()
          + " requests "
          + formatBerryMotes(message.getMsg())
          + "</i></b>"));
      break;
    case ChatMessage.EMOTE_ACT:
      textMessage.setTextColor(Color.GRAY);
      textMessage.setText(Html.fromHtml(createTimestamp(message
          .getTimestamp())
          + "<i>"
          + message.getNick()
          + " "
          + formatBerryMotes(message.getMsg()) + "</i>"));
      break;
    case ChatMessage.EMOTE_POLL:
      textMessage.setTextColor(Color.parseColor("#008000"));
      textMessage.setTextSize(18);
      textMessage.setGravity(Gravity.CENTER_HORIZONTAL);
      textMessage.setText(Html.fromHtml("<b>" + message.getNick()
          + " created a new poll \""
          + formatBerryMotes(message.getMsg()) + "\"</b>"));
      break;
    case ChatMessage.EMOTE_RCV:
      textMessage.setTextColor(Color.RED);
      textMessage.setTextSize(18);
      textMessage.setText(Html.fromHtml(
          createTimestamp(message.getTimestamp()) + message.getNick()
              + ": " + formatBerryMotes(message.getMsg()),
          mFlairGetter, null));
      break;
    case ChatMessage.EMOTE_SPOILER:
      textMessage.setText(formatChatMsg(message));
      view.setOnClickListener(new SpoilerClickListener(message));
      break;
    default:
      textMessage.setText(formatChatMsg(message));
      break;
    }

    return view;
  }

  private String highlightNick(String msg) {
    if (mNick == null)
      return msg;

    if (msg.contains(mNick)) {
      // Simple html parsing
      StringBuilder result = new StringBuilder();
      StringBuilder text = new StringBuilder();
      boolean inHtml = false;
      for (int i = 0; i < msg.length(); i++) {
        char c = msg.charAt(i);
        if (c == '<') {
          result.append(text.toString().replace(mNick,
              "<font color=\"#ff0000\">" + mNick + "</font>"));
          text.delete(0, text.length());
          inHtml = true;
        }

        if (inHtml) {
          result.append(c);
          if (c == '>') {
            inHtml = false;
          }
        } else {
          text.append(c);
        }
      }
      msg = result.append(
          text.toString().replace(mNick,
              "<font color=\"#ff0000\">" + mNick + "</font>"))
          .toString();
    }
    return msg;
  }

  private String createTimestamp(long timeStamp) {
    String result = "";
    SharedPreferences prefs = PreferenceManager
        .getDefaultSharedPreferences(mContext);
    if (prefs.getBoolean(MainActivity.KEY_TIMESTAMP, false)
        && timeStamp > 0) {
      SimpleDateFormat sdf = new SimpleDateFormat("[HH:mm:ss] ",
          Locale.ENGLISH);
      result = sdf.format(new Date(timeStamp));
    }

    return result;
  }

  private String flauntNick(ChatMessage message) {
    if (message.isFlaunt()) {
      switch (message.getType()) {
      case ChatUser.TYPE_ADMIN:
        return "<font color=\"#008000\">" + message.getNick()
            + "</font>";
      case ChatUser.TYPE_MOD:
        return "<font color=\"#FF0000\">" + message.getNick()
            + "</font>";
      default:
        return message.getNick();
      }
    } else
      return message.getNick();
  }

  private Spanned formatChatMsg(ChatMessage message) {
    StringBuilder sb = new StringBuilder();
    sb.append(createTimestamp(message.getTimestamp()));
    sb.append("<b>").append(flauntNick(message)).append("</b>");
    if (message.getFlair() > 0) {
      sb.append("<img src=\"").append(message.getFlair()).append("\" />");
    }
    sb.append(": ");

    // flutter shit
    String m = formatBerryMotes(message.getMsg()).replaceAll(
        "<span class=\"flutter\">(.*)</span>",
        "<font color=\"#FF5499\">$1</font>");

    StringBuilder fontModifiers = new StringBuilder(); // For the
                              // full-string
                              // modifiers (as
                              // distinct from
                              // yay)

    // Spoiler coloring (since background highlighting is hard)
    if (message.isHidden()) {
      int color = mContext.getResources().getColor(
          R.color.background_chat);

      fontModifiers.append(" color=\"#")
          .append(Integer.toHexString(color).substring(2))
          .append("\"");
    }
    // implying
    else if (m.startsWith("&gt;")) {
      fontModifiers.append(" color=\"#789922\"");
    }

    // SWEETIEBOT
    if (message.getEmote() == ChatMessage.EMOTE_SWEETIEBOT) {
      fontModifiers.append(" face=\"courier new\"");
    }

    if (fontModifiers.length() > 0) {
      m = fontModifiers.insert(0, "<font").append(">").append(m)
          .append("</font>").toString();
    }

    // Spoilers
    if (message.getEmote() == ChatMessage.EMOTE_SPOILER) {
      sb.append("SPOILER: ");
    }

    if (message.isHighlightable()) {
      sb.append(highlightNick(m));
    } else {
      sb.append(m);
    }

    return Html.fromHtml(sb.toString(), mFlairGetter, null);
  }

  private String formatBerryMotes(String msg) {
    return mEmotesFormatter.formatString(msg);
  }

  private boolean containsBerryMotes(String msg) {
    return mEmotesFormatter.containsEmotes(msg);
  }

  class SpoilerClickListener implements View.OnClickListener {
    private final ChatMessage mMsg;

    public SpoilerClickListener(ChatMessage message) {
      mMsg = message;
    }

    @Override
    public void onClick(View v) {
      mMsg.toggleHidden();
      mAdapter.notifyDataSetChanged();
    }
  }
}
Java Source Code List
