Android Open Source - imslpdroid Pieces Activity

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License

The source code is released under:

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, includin...

Java Source Code

package com.imslpdroid;
/*from   w  w w .  j  a va  2  s.  c o  m*/
import java.io.IOException;
import java.net.URLEncoder;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.TextView;

import com.imslpdroid.gui.StorableRestrictableListView;

public class PiecesActivity extends StorableRestrictableListView {

  private String composerName;
  private static String prevPage = null;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    composerName = getIntent().getStringExtra("composer");
    prevPage = getIntent().getStringExtra("prevPage");
    super.onCreate(savedInstanceState);
    setTitle(composerName);
    if(!prevPage.equals("InstrumentationActivity"))
      setComposerNameToStrip("(" + composerName + ")");

    // click on list item
    ListView lv = (ListView) findViewById(R.id.rlv_listview);
    lv.setOnItemClickListener(new OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

        String tmpComposerName = "";
        if (!prevPage.equals("InstrumentationActivity"))
          tmpComposerName = "(" + composerName + ")";
        String piece = (String) ((TextView) view).getText();
        if (piece.lastIndexOf("*") != piece.trim().length() - 1) {
          // is not a transcription or arrangement
          piece += tmpComposerName;
        } else
          piece = piece.substring(0, piece.length() - 1);

        Intent newIntent = new Intent();
        newIntent.putExtra("piece", piece);
        newIntent.setClass(parent.getContext(), ScoresActivity.class);
        startActivity(newIntent);
      }
    });
  }

  @Override
  public String getBaseUrl() {
    return "http://imslp.org/index.php?title=Category:" + URLEncoder.encode(composerName).replace("+", "_")
    + (prevPage != null && prevPage.equals("InstrumentationActivity") ? "&transclude=Template:Catintro" : "");
  }

  @Override
  public List<String> downloadList(Handler handler, AtomicBoolean stopFlag) throws IOException {
    List<String> list = new LinkedList<String>();
    boolean firstPage = true;
    String url = getBaseUrl();
    while (url != null && !stopFlag.get()) {
      Document doc = Jsoup.connect(url).get();
      int numMWPages = doc.html().split("\\<div id=\"mw-pages\"\\>").length; // number of tables
      if (firstPage && numMWPages > 2) { // more than one "mw-pages"
        firstPage = false;
        String[] html = doc.html().split("\\<div id=\"mw-pages\"\\>");
        String htmlStart = html[0];
        String[] splitEnd = html[html.length - 1].split("\\</div\\>");
        String htmlEnd = splitEnd[splitEnd.length - 1];
        html[html.length - 1] = splitEnd[0] + "\\</div\\>";
        for (int i = 1; i < numMWPages; i++) {
          String htmlPart = htmlStart + "\\<div id=\"mw-pages\"\\>" + html[i] + htmlEnd;
          Document newDoc = Jsoup.parse(htmlPart);
          Element content = newDoc.getElementById("mw-pages"); // titles
          Elements links = content.getElementsByTag("a");
          addPiece(list, links);
        }
      } else {
        Element content = doc.getElementById("mw-pages"); // titles
        if (content != null) {
          Elements links = content.getElementsByTag("a");
          addPiece(list, links);
        }
      }
      url = null;
      Elements allAnchors = doc.getElementsByTag("a"); // anchors for next 200
      for (Element anchor : allAnchors) {
        if (anchor.hasText() && anchor.text().contains("next 200")) {
          url = "http://imslp.org/" + anchor.attr("href");
          break;
        }
      }
      try {
        Pattern p = Pattern.compile("out of ([0-9\\,]*) total", Pattern.MULTILINE);
        String totalString = doc.getElementById("mw-pages").getElementsByTag("p").get(0).text();
        Matcher matcher = p.matcher(totalString);
        matcher.find();
        int total = Integer.parseInt(matcher.group(1).replace(",", ""));
        handler.sendMessage(getNotificationMessage(String.format("%s - %5.2f%%", "downloading pieces", Math.min(100,list.size() * 100. / total)), null));
      } catch (Exception e) {
        Log.e("getComposerList()", e.toString());
      }
    }
    return list;
  }
  
  void addPiece(List<String> list, Elements links){
    for (Element link : links) {
      String title = link.attr("title");
      if (title.contains("(" + composerName + ")") || prevPage.equals("InstrumentationActivity"))
        list.add(title);
      else
        list.add(title + "*");// transcription marker
    }
  }
}

Java Source Code List

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