]> gitweb.fperrin.net Git - Dictionary.git/commitdiff
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authorThad Hughes <thad.hughes@gmail.com>
Fri, 5 Nov 2010 19:26:13 +0000 (12:26 -0700)
committerThad Hughes <thad.hughes@gmail.com>
Fri, 5 Nov 2010 19:26:13 +0000 (12:26 -0700)
res/drawable/icon_old.png [new file with mode: 0644]
src/com/hughes/android/dictionary/DictionaryActivityOld.java.old [new file with mode: 0644]

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diff --git a/src/com/hughes/android/dictionary/DictionaryActivityOld.java.old b/src/com/hughes/android/dictionary/DictionaryActivityOld.java.old
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+package com.hughes.android.dictionary;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.RandomAccessFile;
+import java.text.SimpleDateFormat;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import android.app.ListActivity;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.os.Handler;
+import android.preference.PreferenceManager;
+import android.text.ClipboardManager;
+import android.text.Editable;
+import android.text.Spannable;
+import android.text.TextWatcher;
+import android.text.style.StyleSpan;
+import android.util.Log;
+import android.view.ContextMenu;
+import android.view.KeyEvent;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ContextMenu.ContextMenuInfo;
+import android.view.MenuItem.OnMenuItemClickListener;
+import android.view.View.OnClickListener;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.AdapterView;
+import android.widget.BaseAdapter;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ListView;
+import android.widget.TableLayout;
+import android.widget.TableRow;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.hughes.android.dictionary.engine.Dictionary;
+import com.hughes.android.dictionary.engine.Language;
+import com.ibm.icu.text.Collator;
+
+public class DictionaryActivityOld extends ListActivity {
+  
+  // TO DO:
+  // * Easy reverse lookup.
+  // * Download latest dicts.
+  //   * http://ftp.tu-chemnitz.de/pub/Local/urz/ding/de-en-devel/
+  //   * http://www1.dict.cc/translation_file_request.php?l=e
+  // * Compress all the strings everywhere, put compression table in file.
+  // Done:
+  // * Only one way to way for current search to end. (won't do).
+
+  static final String LOG = "QuickDic";
+  static final String PREF_DICT_ACTIVE_LANG = "DICT_DIR_PREF";
+  static final String PREF_ACTIVE_SEARCH_TEXT = "ACTIVE_WORD_PREF";
+
+  // package for test.
+  final Handler uiHandler = new Handler();
+  private final Executor searchExecutor = Executors.newSingleThreadExecutor();
+
+  EditText searchText;
+  Button langButton;
+  int lastSelectedRow = 0;  // TODO: I'm evil.
+
+  private boolean prefsMightHaveChanged = true;
+
+  // Never null.
+  private File wordList = null;
+  private RandomAccessFile dictRaf = null;
+  private Dictionary dictionary = null;
+  private boolean saveOnlyFirstSubentry = false;
+
+  // Visible for testing.
+  IndexAdapter indexAdapter = null;
+  private SearchOperation searchOperation = null;
+  
+  public DictionaryActivity() {
+
+    searchExecutor.execute(new Runnable() {
+      public void run() {
+        final long startMillis = System.currentTimeMillis();
+        for (final String lang : Arrays.asList("EN", "DE")) {
+          Language.lookup(lang).getFindCollator(); 
+          final Collator c = Language.lookup(lang).getSortCollator(); 
+          if (c.compare("pre-print", "preppy") >= 0) {
+            Log.e(LOG, c.getClass() + " is buggy, lookups may not work properly.");
+          }
+        }
+        Log.d(LOG, "Loading collators took:" + (System.currentTimeMillis() - startMillis));
+      }
+    });
+
+  }
+
+  /** Called when the activity is first created. */
+  @Override
+  public void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    Log.d(LOG, "onCreate:" + this);
+
+    try {
+      initDictionaryAndPrefs();
+    } catch (Exception e) {
+      return;
+    }
+
+    // UI init.
+
+    setContentView(R.layout.dictionary_activity);
+    searchText = (EditText) findViewById(R.id.SearchText);
+    langButton = (Button) findViewById(R.id.LangButton);
+    
+    searchText.addTextChangedListener(new SearchTextWatcher());
+    
+    getListView().setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+      public void onItemSelected(AdapterView<?> arg0, View arg1, int row,
+          long arg3) {
+        setSelectedRow(row);
+      }
+      public void onNothingSelected(AdapterView<?> arg0) {
+      }
+    });
+    
+    getListView().setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
+      public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int row,
+          long arg3) {
+        setSelectedRow(row);
+        return false;
+      }
+    });
+    
+    final Button clearSearchTextButton = (Button) findViewById(R.id.ClearSearchTextButton);
+    clearSearchTextButton.setOnClickListener(new OnClickListener() {
+      public void onClick(View v) {
+        onClearSearchTextButton(clearSearchTextButton);
+      }
+    });
+    clearSearchTextButton.setVisibility(PreferenceManager.getDefaultSharedPreferences(this).getBoolean(
+        getString(R.string.showClearSearchTextButtonKey), true) ? View.VISIBLE
+        : View.GONE);
+    
+    final Button langButton = (Button) findViewById(R.id.LangButton);
+    langButton.setOnClickListener(new OnClickListener() {
+      public void onClick(View v) {
+        onLanguageButton();
+      }
+    });
+    
+    final Button upButton = (Button) findViewById(R.id.UpButton);
+    upButton.setOnClickListener(new OnClickListener() {
+      public void onClick(View v) {
+        onUpButton();
+      }
+    });
+    final Button downButton = (Button) findViewById(R.id.DownButton);
+    downButton.setOnClickListener(new OnClickListener() {
+      public void onClick(View v) {
+        onDownButton();
+      }
+    });
+
+    // ContextMenu.
+    registerForContextMenu(getListView());
+
+    updateLangButton();
+  }
+  
+  private void initDictionaryAndPrefs() throws Exception {
+    if (!prefsMightHaveChanged) {
+      return;
+    }
+    closeCurrentDictionary();
+    
+    final SharedPreferences prefs = PreferenceManager
+        .getDefaultSharedPreferences(this);
+    wordList = new File(prefs.getString(getString(R.string.wordListFileKey),
+        getString(R.string.wordListFileDefault)));
+    Log.d(LOG, "wordList=" + wordList);
+    
+    saveOnlyFirstSubentry = prefs.getBoolean(getString(R.string.saveOnlyFirstSubentryKey), false);
+
+    final File dictFile = new File(prefs.getString(getString(R.string.dictFileKey),
+        getString(R.string.dictFileDefault)));
+    Log.d(LOG, "dictFile=" + dictFile);
+    
+    try {
+      if (!dictFile.canRead()) {
+        throw new IOException("Unable to read dictionary file.");
+      }
+      
+      dictRaf = new RandomAccessFile(dictFile, "r");
+      final long startMillis = System.currentTimeMillis();
+      dictionary = new Dictionary(dictRaf);
+      Log.d(LOG, "Read dictionary millis: " + (System.currentTimeMillis() - startMillis));
+    } catch (IOException e) {
+      Log.e(LOG, "Couldn't open dictionary.", e);
+      
+      this.startActivity(new asdfIntent(this, DictionaryEditActivity.class));
+      finish();
+    }
+    
+    final byte lang = prefs.getInt(PREF_DICT_ACTIVE_LANG, SimpleEntry.LANG1) == SimpleEntry.LANG1 ? SimpleEntry.LANG1
+        : SimpleEntry.LANG2;
+    
+    indexAdapter = new IndexAdapter(dictionary.languageDatas[lang]);
+    setListAdapter(indexAdapter);
+    prefsMightHaveChanged = false;
+  }
+
+  @Override
+  public void onResume() {
+    super.onResume();
+    Log.d(LOG, "onResume:" + this);
+
+    try {
+      initDictionaryAndPrefs();
+    } catch (Exception e) {
+      return;
+    }
+    
+    final SharedPreferences prefs = PreferenceManager
+        .getDefaultSharedPreferences(this);
+    final String searchTextString = prefs
+        .getString(PREF_ACTIVE_SEARCH_TEXT, "");
+    searchText.setText(searchTextString);
+    getListView().requestFocus();
+    onSearchTextChange(searchTextString);
+  }
+
+  @Override
+  public void onPause() {
+    super.onPause();
+    Log.d(LOG, "onPause:" + this);
+    final Editor prefs = PreferenceManager.getDefaultSharedPreferences(this)
+        .edit();
+    prefs.putInt(PREF_DICT_ACTIVE_LANG, indexAdapter.languageData.lang);
+    prefs.putString(PREF_ACTIVE_SEARCH_TEXT, searchText.getText().toString());
+    prefs.commit();
+  }
+
+  @Override
+  public void onStop() {
+    super.onStop();
+    Log.d(LOG, "onStop:" + this);
+    if (isFinishing()) {
+      Log.i(LOG, "isFinishing()==true, closing dictionary.");
+      closeCurrentDictionary();
+    }
+  }
+
+  private void closeCurrentDictionary() {
+    Log.i(LOG, "closeCurrentDictionary");
+    if (dictionary == null) {
+      return;
+    }
+    waitForSearchEnd();
+    indexAdapter = null;
+    setListAdapter(null);
+    Log.d(LOG, "setListAdapter finished.");
+    dictionary = null;
+    try {
+      if (dictRaf != null) {
+        dictRaf.close();
+      }
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+    dictRaf = null;
+  }
+
+  public String getSelectedRowRawText(final boolean onlyFirstSubentry) {
+    final Row row = indexAdapter.languageData.rows.get(getSelectedRow());
+    return indexAdapter.languageData.rowToString(row, onlyFirstSubentry);
+  }
+
+  // ----------------------------------------------------------------
+  // OptionsMenu
+  // ----------------------------------------------------------------
+
+  private MenuItem switchLanguageMenuItem = null;
+
+  @Override
+  public boolean onCreateOptionsMenu(final Menu menu) {
+    switchLanguageMenuItem = menu.add(getString(R.string.switchToLanguage));
+    switchLanguageMenuItem
+        .setOnMenuItemClickListener(new OnMenuItemClickListener() {
+          public boolean onMenuItemClick(final MenuItem menuItem) {
+            onLanguageButton();
+            return false;
+          }
+        });
+
+    final MenuItem preferences = menu.add(getString(R.string.preferences));
+    preferences.setOnMenuItemClickListener(new OnMenuItemClickListener() {
+      public boolean onMenuItemClick(final MenuItem menuItem) {
+        prefsMightHaveChanged = true;
+        startActivity(new Intent(DictionaryActivity.this,
+            PreferenceActivity.class));
+        return false;
+      }
+    });
+
+    final MenuItem about = menu.add(getString(R.string.about));
+    about.setOnMenuItemClickListener(new OnMenuItemClickListener() {
+      public boolean onMenuItemClick(final MenuItem menuItem) {
+        final Intent intent = new Intent().setClassName(AboutActivity.class
+            .getPackage().getName(), AboutActivity.class.getCanonicalName());
+        final String currentDictInfo;
+        if (dictionary == null) {
+          currentDictInfo = getString(R.string.noDictLoaded);
+        } else {
+          final LanguageData lang0 = dictionary.languageDatas[0];
+          final LanguageData lang1 = dictionary.languageDatas[1];
+          currentDictInfo = getString(R.string.aboutText, dictionary.dictionaryInfo, dictionary.entries.size(), 
+              lang0.language.symbol, lang0.sortedIndex.size(), lang0.rows.size(),
+              lang1.language.symbol, lang1.sortedIndex.size(), lang1.rows.size());
+        }
+        intent.putExtra(AboutActivity.CURRENT_DICT_INFO, currentDictInfo
+            .toString());
+        startActivity(intent);
+        return false;
+      }
+    });
+
+    final MenuItem download = menu.add(getString(R.string.downloadDictionary));
+    download.setOnMenuItemClickListener(new OnMenuItemClickListener() {
+      public boolean onMenuItemClick(final MenuItem menuItem) {
+        prefsMightHaveChanged = true;
+        startDownloadDictActivity(DictionaryActivity.this);
+        return false;
+      }
+    });
+
+    return true;
+  }
+
+  @Override
+  public boolean onPrepareOptionsMenu(final Menu menu) {
+    switchLanguageMenuItem.setTitle(getString(R.string.switchToLanguage,
+        dictionary.languageDatas[SimpleEntry
+            .otherLang(indexAdapter.languageData.lang)].language.symbol));
+    return super.onPrepareOptionsMenu(menu);
+  }
+  
+  void updateLangButton() {
+    langButton.setText(indexAdapter.languageData.language.symbol);
+  }
+
+  // ----------------------------------------------------------------
+  // Event handlers.
+  // ----------------------------------------------------------------
+  
+  void onLanguageButton() {
+    waitForSearchEnd();
+    indexAdapter = new IndexAdapter(
+        dictionary.languageDatas[(indexAdapter.languageData == dictionary.languageDatas[0]) ? 1
+            : 0]);
+    Log.d(LOG, "onLanguageButton, newLang=" + indexAdapter.languageData.language.symbol);
+    setListAdapter(indexAdapter);
+    updateLangButton();
+    onSearchTextChange(searchText.getText().toString());
+  }
+
+  void onUpButton() {
+    final int destRowIndex = indexAdapter.languageData.getPrevTokenRow(getSelectedRow());
+    Log.d(LOG, "onUpButton, destRowIndex=" + destRowIndex);
+    jumpToRow(indexAdapter, destRowIndex);
+  }
+
+  void onDownButton() {
+    final int destRowIndex = indexAdapter.languageData.getNextTokenRow(getSelectedRow());
+    Log.d(LOG, "onDownButton, destRowIndex=" + destRowIndex);
+    jumpToRow(indexAdapter, destRowIndex);
+  }
+
+  void onAppendToWordList() {
+    final int row = getSelectedRow();
+    if (row < 0) {
+      return;
+    }
+    final StringBuilder rawText = new StringBuilder();
+    final String word = indexAdapter.languageData.getIndexEntryForRow(row).word;
+    rawText.append(
+        new SimpleDateFormat("yyyy.MM.dd HH:mm:ss").format(new Date()))
+        .append("\t");
+    rawText.append(word).append("\t");
+    rawText.append(getSelectedRowRawText(saveOnlyFirstSubentry));
+    Log.d(LOG, "Writing : " + rawText);
+    try {
+      wordList.getParentFile().mkdirs();
+      final PrintWriter out = new PrintWriter(
+          new FileWriter(wordList, true));
+      out.println(rawText.toString());
+      out.close();
+    } catch (IOException e) {
+      Log.e(LOG, "Unable to append to " + wordList.getAbsolutePath(), e);
+      Toast.makeText(this, getString(R.string.failedAddingToWordList, wordList.getAbsolutePath()), Toast.LENGTH_LONG);
+    }
+    return;
+  }
+
+  void onCopy() {
+    final int row = getSelectedRow();
+    if (row < 0) {
+      return;
+    }
+    Log.d(LOG, "Copy." + DictionaryActivity.this.getSelectedRow());
+    final StringBuilder result = new StringBuilder();
+    result.append(getSelectedRowRawText(false));
+    final ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
+    clipboardManager.setText(result.toString());
+    Log.d(LOG, "Copied: " + result);
+  }
+
+  @Override
+  public boolean onKeyDown(int keyCode, KeyEvent event) {
+    if (event.getUnicodeChar() != 0) {
+      if (!searchText.hasFocus()) {
+        searchText.setText("" + (char) event.getUnicodeChar());
+        onSearchTextChange(searchText.getText().toString());
+        searchText.requestFocus();
+      }
+      return true;
+    }
+    return super.onKeyDown(keyCode, event);
+  }
+
+  @Override
+  protected void onListItemClick(ListView l, View v, int row, long id) {
+    setSelectedRow(row);
+    openContextMenu(getListView());
+  }
+
+  void onSearchTextChange(final String searchText) {
+    Log.d(LOG, "onSearchTextChange: " + searchText);
+    synchronized (this) {
+      searchOperation = new SearchOperation(indexAdapter, searchText.trim(), searchOperation);
+      searchExecutor.execute(searchOperation);
+    }
+  }
+
+  private void onClearSearchTextButton(final Button clearSearchTextButton) {
+    clearSearchTextButton.requestFocus();
+    searchText.setText("");
+    searchText.requestFocus();
+    Log.d(LOG, "Trying to show soft keyboard.");
+    final InputMethodManager manager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+    manager.showSoftInput(searchText, InputMethodManager.SHOW_IMPLICIT);
+  }
+
+  // ----------------------------------------------------------------
+  // ContextMenu
+  // ----------------------------------------------------------------
+
+  @Override
+  public void onCreateContextMenu(ContextMenu menu, View v,
+      ContextMenuInfo menuInfo) {
+    final int row = getSelectedRow();
+    if (row < 0) {
+      return;
+    }
+
+    final MenuItem addToWordlist = menu.add(getString(R.string.addToWordList, wordList.getName()));
+    addToWordlist.setOnMenuItemClickListener(new OnMenuItemClickListener() {
+      public boolean onMenuItemClick(MenuItem item) {
+        onAppendToWordList();
+        return false;
+      }
+    });
+
+    final MenuItem copy = menu.add(android.R.string.copy);
+    copy.setOnMenuItemClickListener(new OnMenuItemClickListener() {
+      public boolean onMenuItemClick(MenuItem item) {
+        onCopy();
+        return false;
+      }
+    });
+
+  }
+
+  private void jumpToRow(final IndexAdapter dictionaryListAdapter,
+      final int rowIndex) {
+    Log.d(LOG, "jumpToRow: " + rowIndex);
+    if (dictionaryListAdapter != this.indexAdapter) {
+      Log.w(LOG, "skipping jumpToRow for old list adapter: " + rowIndex);
+      return;
+    }
+    setSelection(rowIndex);
+    setSelectedRow(rowIndex);
+    getListView().setSelected(true);
+  }
+  
+  // TODO: delete me somehow.
+  private int getSelectedRow() {
+    return lastSelectedRow;
+  }
+  private void setSelectedRow(final int row) {
+    lastSelectedRow = row;
+    Log.d(LOG, "Selected: " + getSelectedRowRawText(true));
+    updateSearchText();
+  }
+
+  private void updateSearchText() {
+    Log.d(LOG, "updateSearchText");
+    final int selectedRowIndex = getSelectedRow();
+    if (!searchText.hasFocus()) {
+      if (selectedRowIndex >= 0) {
+        final String word = indexAdapter.languageData
+            .getIndexEntryForRow(selectedRowIndex).word;
+        if (!word.equals(searchText.getText().toString())) {
+          Log.d(LOG, "updateSearchText: setText: " + word);
+          searchText.setText(word);
+        }
+      } else {
+        Log.w(LOG, "updateSearchText: nothing selected.");
+      }
+    }
+  }
+
+  static void startDownloadDictActivity(final Context context) {
+    final Intent intent = new Intent(context, DownloadActivity.class);
+    final SharedPreferences prefs = PreferenceManager
+        .getDefaultSharedPreferences(context);
+    final String dictFetchUrl = prefs.getString(context
+        .getString(R.string.dictFetchUrlKey), context
+        .getString(R.string.dictFetchUrlDefault));
+    final String dictFileName = prefs.getString(context
+        .getString(R.string.dictFileKey), context
+        .getString(R.string.dictFileDefault));
+    intent.putExtra(DownloadActivity.SOURCE, dictFetchUrl);
+    intent.putExtra(DownloadActivity.DEST, dictFileName);
+    context.startActivity(intent);
+  }
+
+  class IndexAdapter extends BaseAdapter {
+
+    // Visible for testing.
+    final LanguageData languageData;
+
+    IndexAdapter(final LanguageData languageData) {
+      this.languageData = languageData;
+    }
+
+    public int getCount() {
+      return languageData.rows.size();
+    }
+
+    public Dictionary.Row getItem(int rowIndex) {
+      assert rowIndex < languageData.rows.size();
+      return languageData.rows.get(rowIndex);
+    }
+
+    public long getItemId(int rowIndex) {
+      return rowIndex;
+    }
+
+    public View getView(final int rowIndex, final View convertView,
+        final ViewGroup parent) {
+      final Row row = getItem(rowIndex);
+
+      // Token row.
+      if (row.isToken()) {
+        TextView result = null;
+        if (convertView instanceof TextView) {
+          result = (TextView) convertView;
+        } else {
+          result = new TextView(parent.getContext());
+        }
+        if (row == null) {
+          return result;
+        }
+        result.setText(languageData.rowToString(row, false));
+        result.setTextAppearance(parent.getContext(),
+            android.R.style.TextAppearance_Large);
+        result.setClickable(false);
+        return result;
+      }
+
+      // Entry row(s).
+      final TableLayout result = new TableLayout(parent.getContext());
+
+      final SimpleEntry entry = new SimpleEntry(null, null);//.entries.get(row.getIndex());
+      final int rowCount = entry.getRowCount();
+      for (int r = 0; r < rowCount; ++r) {
+        final TableRow tableRow = new TableRow(result.getContext());
+
+        TextView column1 = new TextView(tableRow.getContext());
+        TextView column2 = new TextView(tableRow.getContext());
+        final TableRow.LayoutParams layoutParams = new TableRow.LayoutParams();
+        layoutParams.weight = 0.5f;
+
+        if (r > 0) {
+          final TextView spacer = new TextView(tableRow.getContext());
+          spacer.setText(r == 0 ? "� " : " � ");
+          tableRow.addView(spacer);
+        }
+        tableRow.addView(column1, layoutParams);
+        if (r > 0) {
+          final TextView spacer = new TextView(tableRow.getContext());
+          spacer.setText(r == 0 ? "� " : " � ");
+          tableRow.addView(spacer);
+        }
+        tableRow.addView(column2, layoutParams);
+
+        column1.setWidth(1);
+        column2.setWidth(1);
+        // column1.setTextAppearance(parent.getContext(), android.R.style.Text);
+
+        // TODO: color words by gender
+        final String col1Text = entry.getAllText(languageData.lang)[r];
+        column1.setText(col1Text, TextView.BufferType.SPANNABLE);
+        final Spannable col1Spannable = (Spannable) column1.getText();
+        int startPos = 0;
+        final String token = languageData.getIndexEntryForRow(rowIndex).word;
+        while ((startPos = col1Text.indexOf(token, startPos)) != -1) {
+          col1Spannable.setSpan(new StyleSpan(Typeface.BOLD), startPos,
+              startPos + token.length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
+          startPos += token.length();
+        }
+
+        column2.setText(
+            entry.getAllText(SimpleEntry.otherLang(languageData.lang))[r],
+            TextView.BufferType.NORMAL);
+
+        result.addView(tableRow);
+      }
+
+      return result;
+    }
+
+  } // DictionaryListAdapter
+
+  private final class SearchOperation implements Runnable {
+    SearchOperation previousSearchOperation;
+    
+    final IndexAdapter listAdapter;
+    final LanguageData languageData;
+    final String searchText;
+    final AtomicBoolean interrupted = new AtomicBoolean(false);
+    boolean searchFinished = false;
+
+    SearchOperation(final IndexAdapter listAdapter,
+        final String searchText, final SearchOperation previousSearchOperation) {
+      this.listAdapter = listAdapter;
+      this.languageData = listAdapter.languageData;
+      this.searchText = searchText;
+      this.previousSearchOperation = previousSearchOperation;
+    }
+
+    public void run() {
+      if (previousSearchOperation != null) {
+        previousSearchOperation.stopAndWait();
+      }
+      previousSearchOperation = null;
+      
+      Log.d(LOG, "SearchOperation: " + searchText);
+      final int indexLocation = languageData.lookup(searchText, interrupted);
+      if (!interrupted.get()) {
+        final IndexEntry indexEntry = languageData.sortedIndex.get(indexLocation);
+        
+        Log.d(LOG, "SearchOperation completed: " + indexEntry.toString());
+        uiHandler.post(new Runnable() {
+          public void run() {
+            // Check is just a performance operation.
+            if (!interrupted.get()) {
+              // This is safe, because it checks that the listAdapter hasn't changed.
+              jumpToRow(listAdapter, indexEntry.startRow);
+            }
+            synchronized (DictionaryActivity.this) {
+              searchOperation = null;
+              DictionaryActivity.this.notifyAll();
+            }
+          }
+        });
+      }      
+      synchronized (this) {
+        searchFinished = true;
+        this.notifyAll();
+      }
+    }
+    
+    private void stopAndWait() {
+      interrupted.set(true);
+      synchronized (this) {
+        while (!searchFinished) {
+          Log.d(LOG, "stopAndWait: " + searchText);
+          try {
+            this.wait();
+          } catch (InterruptedException e) {
+            Log.e(LOG, "Interrupted", e);
+          }
+        }
+      }
+    }
+  }  // SearchOperation
+
+  void waitForSearchEnd() {
+    synchronized (this) {
+      while (searchOperation != null) {
+        Log.d(LOG, "waitForSearchEnd");
+        try {
+          this.wait();
+        } catch (InterruptedException e) {
+          Log.e(LOG, "Interrupted.", e);
+        }
+      }
+    }
+  }
+
+  private class SearchTextWatcher implements TextWatcher {
+    public void afterTextChanged(final Editable searchTextEditable) {
+      Log.d(LOG, "Search text changed: " + searchText.getText().toString());
+      if (searchText.hasFocus()) {
+        // If they were typing to cause the change, update the UI.
+        onSearchTextChange(searchText.getText().toString());
+      }
+    }
+
+    public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
+        int arg3) {
+    }
+
+    public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
+    }
+  }
+
+}
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