src/com/hughes/android/dictionary/DictionaryActivity.java

   1 // Copyright 2011 Google Inc. All Rights Reserved.
   2 // Some Parts Copyright 2013 Dominik Köppl
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 package com.hughes.android.dictionary;
  16
  17 import android.annotation.SuppressLint;
  18 import android.app.Dialog;
  19 import android.app.SearchManager;
  20 import android.content.Context;
  21 import android.content.Intent;
  22 import android.content.SharedPreferences;
  23 import android.graphics.Color;
  24 import android.graphics.Typeface;
  25 import android.net.Uri;
  26 import android.os.Bundle;
  27 import android.os.Handler;
  28 import android.preference.PreferenceManager;
  29 import android.speech.tts.TextToSpeech;
  30 import android.speech.tts.TextToSpeech.OnInitListener;
  31 import android.text.ClipboardManager;
  32 import android.text.Spannable;
  33 import android.text.method.LinkMovementMethod;
  34 import android.text.style.ClickableSpan;
  35 import android.text.style.StyleSpan;
  36 import android.util.Log;
  37 import android.util.TypedValue;
  38 import android.view.ContextMenu;
  39 import android.view.ContextMenu.ContextMenuInfo;
  40 import android.view.KeyEvent;
  41 import android.view.MotionEvent;
  42 import android.view.View;
  43 import android.view.View.OnClickListener;
  44 import android.view.View.OnLongClickListener;
  45 import android.view.ViewGroup;
  46 import android.view.WindowManager;
  47 import android.view.inputmethod.EditorInfo;
  48 import android.view.inputmethod.InputMethodManager;
  49 import android.widget.AdapterView.AdapterContextMenuInfo;
  50 import android.widget.BaseAdapter;
  51 import android.widget.Button;
  52 import android.widget.FrameLayout;
  53 import android.widget.ImageView;
  54 import android.widget.LinearLayout;
  55 import android.widget.ListAdapter;
  56 import android.widget.ListView;
  57 import android.widget.TableLayout;
  58 import android.widget.TableRow;
  59 import android.widget.TextView;
  60 import android.widget.TextView.BufferType;
  61 import android.widget.Toast;
  62
  63 import com.actionbarsherlock.app.ActionBar;
  64 import com.actionbarsherlock.app.SherlockListActivity;
  65 import com.actionbarsherlock.view.Menu;
  66 import com.actionbarsherlock.view.MenuItem;
  67 import com.actionbarsherlock.view.MenuItem.OnMenuItemClickListener;
  68 import com.actionbarsherlock.widget.SearchView;
  69 import com.actionbarsherlock.widget.SearchView.OnQueryTextListener;
  70 import com.hughes.android.dictionary.DictionaryInfo.IndexInfo;
  71 import com.hughes.android.dictionary.engine.Dictionary;
  72 import com.hughes.android.dictionary.engine.EntrySource;
  73 import com.hughes.android.dictionary.engine.HtmlEntry;
  74 import com.hughes.android.dictionary.engine.Index;
  75 import com.hughes.android.dictionary.engine.Index.IndexEntry;
  76 import com.hughes.android.dictionary.engine.Language;
  77 import com.hughes.android.dictionary.engine.Language.LanguageResources;
  78 import com.hughes.android.dictionary.engine.PairEntry;
  79 import com.hughes.android.dictionary.engine.PairEntry.Pair;
  80 import com.hughes.android.dictionary.engine.RowBase;
  81 import com.hughes.android.dictionary.engine.TokenRow;
  82 import com.hughes.android.dictionary.engine.TransliteratorManager;
  83 import com.hughes.android.util.IntentLauncher;
  84 import com.hughes.android.util.NonLinkClickableSpan;
  85 import com.hughes.util.StringUtil;
  86
  87 import java.io.File;
  88 import java.io.FileWriter;
  89 import java.io.IOException;
  90 import java.io.PrintWriter;
  91 import java.io.RandomAccessFile;
  92 import java.text.SimpleDateFormat;
  93 import java.util.Arrays;
  94 import java.util.Collections;
  95 import java.util.Date;
  96 import java.util.HashMap;
  97 import java.util.LinkedHashSet;
  98 import java.util.List;
  99 import java.util.Locale;
 100 import java.util.Random;
 101 import java.util.Set;
 102 import java.util.concurrent.Executor;
 103 import java.util.concurrent.Executors;
 104 import java.util.concurrent.ThreadFactory;
 105 import java.util.concurrent.atomic.AtomicBoolean;
 106 import java.util.regex.Matcher;
 107 import java.util.regex.Pattern;
 108
 109 public class DictionaryActivity extends SherlockListActivity {
 110
 111     static final String LOG = "QuickDic";
 112
 113     DictionaryApplication application;
 114
 115     File dictFile = null;
 116     RandomAccessFile dictRaf = null;
 117
 118     Dictionary dictionary = null;
 119
 120     int indexIndex = 0;
 121
 122     Index index = null;
 123
 124     List<RowBase> rowsToShow = null; // if not null, just show these rows.
 125
 126     final Handler uiHandler = new Handler();
 127
 128     private final Executor searchExecutor = Executors.newSingleThreadExecutor(new ThreadFactory() {
 129         @Override
 130         public Thread newThread(Runnable r) {
 131             return new Thread(r, "searchExecutor");
 132         }
 133     });
 134
 135     private SearchOperation currentSearchOperation = null;
 136
 137     TextToSpeech textToSpeech;
 138     volatile boolean ttsReady;
 139
 140     Typeface typeface;
 141     C.Theme theme = C.Theme.LIGHT;
 142     int textColorFg = Color.BLACK;
 143     int fontSizeSp;
 144
 145     SearchView searchView;
 146     ImageView searchHintIcon;
 147     SearchView.OnQueryTextListener onQueryTextListener;
 148
 149     MenuItem nextWordMenuItem, previousWordMenuItem;
 150
 151     // Never null.
 152     private File wordList = null;
 153     private boolean saveOnlyFirstSubentry = false;
 154     private boolean clickOpensContextMenu = false;
 155
 156     // Visible for testing.
 157     ListAdapter indexAdapter = null;
 158
 159     /**
 160      * For some languages, loading the transliterators used in this search takes
 161      * a long time, so we fire it up on a different thread, and don't invoke it
 162      * from the main thread until it's already finished once.
 163      */
 164     private volatile boolean indexPrepFinished = false;
 165
 166     public DictionaryActivity() {
 167     }
 168
 169     public static Intent getLaunchIntent(final File dictFile, final String indexShortName,
 170             final String searchToken) {
 171         final Intent intent = new Intent();
 172         intent.setClassName(DictionaryActivity.class.getPackage().getName(),
 173                 DictionaryActivity.class.getName());
 174         intent.putExtra(C.DICT_FILE, dictFile.getPath());
 175         intent.putExtra(C.INDEX_SHORT_NAME, indexShortName);
 176         intent.putExtra(C.SEARCH_TOKEN, searchToken);
 177         return intent;
 178     }
 179
 180     @Override
 181     protected void onSaveInstanceState(final Bundle outState) {
 182         super.onSaveInstanceState(outState);
 183         Log.d(LOG, "onSaveInstanceState: " + searchView.getQuery().toString());
 184         outState.putString(C.INDEX_SHORT_NAME, index.shortName);
 185         outState.putString(C.SEARCH_TOKEN, searchView.getQuery().toString());
 186     }
 187
 188     @Override
 189     protected void onRestoreInstanceState(final Bundle savedInstanceState) {
 190         super.onRestoreInstanceState(savedInstanceState);
 191         Log.d(LOG, "onRestoreInstanceState: " + savedInstanceState.getString(C.SEARCH_TOKEN));
 192         onCreate(savedInstanceState);
 193     }
 194
 195     @Override
 196     public void onCreate(Bundle savedInstanceState) {
 197         Log.d(LOG, "onCreate:" + this);
 198         super.onCreate(savedInstanceState);
 199
 200         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 201
 202         // Don't auto-launch if this fails.
 203         prefs.edit().remove(C.DICT_FILE).commit();
 204
 205         setTheme(((DictionaryApplication) getApplication()).getSelectedTheme().themeId);
 206
 207         application = (DictionaryApplication) getApplication();
 208         theme = application.getSelectedTheme();
 209         textColorFg = getResources().getColor(theme.tokenRowFgColor);
 210
 211         final Intent intent = getIntent();
 212         String intentAction = intent.getAction();
 213         /**
 214          * @author Dominik Köppl
 215          * Querying the Intent
 216          * com.hughes.action.ACTION_SEARCH_DICT is the advanced query
 217          * Arguments:
 218          * SearchManager.QUERY -> the phrase to search
 219          * from -> language in which the phrase is written
 220          * to -> to which language shall be translated
 221          */
 222         if(intentAction != null && intentAction.equals("com.hughes.action.ACTION_SEARCH_DICT"))
 223         {
 224                 String query = intent.getStringExtra(SearchManager.QUERY);
 225                 String from = intent.getStringExtra("from");
 226                 if(from != null) from = from.toLowerCase(Locale.US);
 227                 String to = intent.getStringExtra("to");
 228                 if(to != null) to = to.toLowerCase(Locale.US);
 229                 if(query != null)
 230                 {
 231                         getIntent().putExtra(C.SEARCH_TOKEN, query);
 232                 }
 233                 if(intent.getStringExtra(C.DICT_FILE) == null && (from != null || to != null))
 234                 {
 235                         Log.d(LOG, "DictSearch: from: " + from + " to " + to);
 236                         List<DictionaryInfo> dicts = application.getDictionariesOnDevice(null);
 237                         for(DictionaryInfo info : dicts)
 238                         {
 239                                 boolean hasFrom = from == null;
 240                                 boolean hasTo = to == null;
 241                                 for(IndexInfo index : info.indexInfos)
 242                                 {
 243                                         if(!hasFrom && index.shortName.toLowerCase(Locale.US).equals(from)) hasFrom = true;
 244                                         if(!hasTo && index.shortName.toLowerCase(Locale.US).equals(to)) hasTo = true;
 245                                 }
 246                                 if(hasFrom && hasTo)
 247                                 {
 248                                         if(from != null)
 249                                         {
 250                                                 int which_index = 0;
 251                                         for(;which_index < info.indexInfos.size(); ++which_index)
 252                                         {
 253                                                 if(info.indexInfos.get(which_index).shortName.toLowerCase(Locale.US).equals(from))
 254                                                         break;
 255                                         }
 256                                         intent.putExtra(C.INDEX_SHORT_NAME, info.indexInfos.get(which_index).shortName);
 257
 258                                         }
 259                                         intent.putExtra(C.DICT_FILE, application.getPath(info.uncompressedFilename).toString());
 260                                         break;
 261                                 }
 262                         }
 263
 264                 }
 265         }
 266         /**
 267          * @author Dominik Köppl
 268          * Querying the Intent
 269          * Intent.ACTION_SEARCH is a simple query
 270          * Arguments follow from android standard (see documentation)
 271          */
 272         if (intentAction != null && intentAction.equals(Intent.ACTION_SEARCH))
 273         {
 274             String query = intent.getStringExtra(SearchManager.QUERY);
 275                 if(query != null) getIntent().putExtra(C.SEARCH_TOKEN,query);
 276         }
 277         /**
 278          * @author Dominik Köppl
 279          * If no dictionary is chosen, use the default dictionary specified in the preferences
 280          * If this step does fail (no default directory specified), show a toast and abort.
 281          */
 282         if(intent.getStringExtra(C.DICT_FILE) == null)
 283         {
 284                 String dictfile = prefs.getString(getString(R.string.defaultDicKey), null);
 285                 if(dictfile != null) intent.putExtra(C.DICT_FILE, application.getPath(dictfile).toString());
 286         }
 287         String dictFilename = intent.getStringExtra(C.DICT_FILE);
 288
 289         if(dictFilename == null)
 290         {
 291             Toast.makeText(this, getString(R.string.no_dict_file), Toast.LENGTH_LONG).show();
 292             startActivity(DictionaryManagerActivity.getLaunchIntent());
 293             finish();
 294             return;
 295         }
 296         if(dictFilename != null) dictFile = new File(dictFilename);
 297
 298         ttsReady = false;
 299         textToSpeech = new TextToSpeech(getApplicationContext(), new OnInitListener() {
 300             @Override
 301             public void onInit(int status) {
 302                 ttsReady = true;
 303                 updateTTSLanguage();
 304             }
 305         });
 306
 307         try {
 308             final String name = application.getDictionaryName(dictFile.getName());
 309             this.setTitle("QuickDic: " + name);
 310             dictRaf = new RandomAccessFile(dictFile, "r");
 311             dictionary = new Dictionary(dictRaf);
 312         } catch (Exception e) {
 313             Log.e(LOG, "Unable to load dictionary.", e);
 314             if (dictRaf != null) {
 315                 try {
 316                     dictRaf.close();
 317                 } catch (IOException e1) {
 318                     Log.e(LOG, "Unable to close dictRaf.", e1);
 319                 }
 320                 dictRaf = null;
 321             }
 322             Toast.makeText(this, getString(R.string.invalidDictionary, "", e.getMessage()),
 323                     Toast.LENGTH_LONG).show();
 324             startActivity(DictionaryManagerActivity.getLaunchIntent());
 325             finish();
 326             return;
 327         }
 328         String targetIndex = intent.getStringExtra(C.INDEX_SHORT_NAME);
 329         if (savedInstanceState != null && savedInstanceState.getString(C.INDEX_SHORT_NAME) != null) {
 330             targetIndex = savedInstanceState.getString(C.INDEX_SHORT_NAME);
 331         }
 332         indexIndex = 0;
 333         for (int i = 0; i < dictionary.indices.size(); ++i) {
 334             if (dictionary.indices.get(i).shortName.equals(targetIndex)) {
 335                 indexIndex = i;
 336                 break;
 337             }
 338         }
 339         Log.d(LOG, "Loading index " + indexIndex);
 340         index = dictionary.indices.get(indexIndex);
 341         setListAdapter(new IndexAdapter(index));
 342
 343         // Pre-load the collators.
 344         new Thread(new Runnable() {
 345             public void run() {
 346                 final long startMillis = System.currentTimeMillis();
 347                 try {
 348                     TransliteratorManager.init(new TransliteratorManager.Callback() {
 349                         @Override
 350                         public void onTransliteratorReady() {
 351                             uiHandler.post(new Runnable() {
 352                                 @Override
 353                                 public void run() {
 354                                     onSearchTextChange(searchView.getQuery().toString());
 355                                 }
 356                             });
 357                         }
 358                     });
 359
 360                     for (final Index index : dictionary.indices) {
 361                         final String searchToken = index.sortedIndexEntries.get(0).token;
 362                         final IndexEntry entry = index.findExact(searchToken);
 363                         if (!searchToken.equals(entry.token)) {
 364                             Log.e(LOG, "Couldn't find token: " + searchToken + ", " + entry.token);
 365                         }
 366                     }
 367                     indexPrepFinished = true;
 368                 } catch (Exception e) {
 369                     Log.w(LOG,
 370                             "Exception while prepping.  This can happen if dictionary is closed while search is happening.");
 371                 }
 372                 Log.d(LOG, "Prepping indices took:" + (System.currentTimeMillis() - startMillis));
 373             }
 374         }).start();
 375
 376         String fontName = prefs.getString(getString(R.string.fontKey), "FreeSerif.ttf.jpg");
 377         if ("SYSTEM".equals(fontName)) {
 378             typeface = Typeface.DEFAULT;
 379         } else {
 380             try {
 381                 typeface = Typeface.createFromAsset(getAssets(), fontName);
 382             } catch (Exception e) {
 383                 Log.w(LOG, "Exception trying to use typeface, using default.", e);
 384                 Toast.makeText(this, getString(R.string.fontFailure, e.getLocalizedMessage()),
 385                         Toast.LENGTH_LONG).show();
 386             }
 387         }
 388         if (typeface == null) {
 389             Log.w(LOG, "Unable to create typeface, using default.");
 390             typeface = Typeface.DEFAULT;
 391         }
 392         final String fontSize = prefs.getString(getString(R.string.fontSizeKey), "14");
 393         try {
 394             fontSizeSp = Integer.parseInt(fontSize.trim());
 395         } catch (NumberFormatException e) {
 396             fontSizeSp = 14;
 397         }
 398
 399         setContentView(R.layout.dictionary_activity);
 400
 401         // ContextMenu.
 402         registerForContextMenu(getListView());
 403
 404         // Cache some prefs.
 405         wordList = new File(prefs.getString(getString(R.string.wordListFileKey),
 406                 new File(application.getDictDir(), "wordList.txt").getAbsolutePath()));
 407         saveOnlyFirstSubentry = prefs.getBoolean(getString(R.string.saveOnlyFirstSubentryKey),
 408                 false);
 409         clickOpensContextMenu = prefs.getBoolean(getString(R.string.clickOpensContextMenuKey),
 410                 false);
 411         Log.d(LOG, "wordList=" + wordList + ", saveOnlyFirstSubentry=" + saveOnlyFirstSubentry);
 412
 413         onCreateSetupActionBarAndSearchView();
 414
 415         // Set the search text from the intent, then the saved state.
 416         String text = getIntent().getStringExtra(C.SEARCH_TOKEN);
 417         if (savedInstanceState != null) {
 418             text = savedInstanceState.getString(C.SEARCH_TOKEN);
 419         }
 420         if (text == null) {
 421             text = "";
 422         }
 423         setSearchText(text, true);
 424         Log.d(LOG, "Trying to restore searchText=" + text);
 425
 426         setDictionaryPrefs(this, dictFile, index.shortName, searchView.getQuery().toString());
 427
 428         updateLangButton();
 429         searchView.requestFocus();
 430     }
 431
 432     private void onCreateSetupActionBarAndSearchView() {
 433         ActionBar actionBar = getSupportActionBar();
 434         actionBar.setDisplayShowTitleEnabled(false);
 435
 436         searchView = new SearchView(getSupportActionBar().getThemedContext());
 437         searchView.setIconifiedByDefault(false);
 438         // searchView.setIconified(false); // puts the magnifying glass in the
 439         // wrong place.
 440         searchView.setQueryHint(getString(R.string.searchText));
 441         searchView.setSubmitButtonEnabled(false);
 442         final int width = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 300,
 443                 getResources().getDisplayMetrics());
 444         FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(width,
 445                 FrameLayout.LayoutParams.WRAP_CONTENT);
 446         searchView.setLayoutParams(lp);
 447         searchView.setImeOptions(
 448                 EditorInfo.IME_ACTION_SEARCH |
 449                         EditorInfo.IME_FLAG_NO_EXTRACT_UI |
 450                         EditorInfo.IME_FLAG_NO_ENTER_ACTION |
 451                         // EditorInfo.IME_FLAG_NO_FULLSCREEN | // Requires API
 452                         // 11
 453                         EditorInfo.IME_MASK_ACTION |
 454                         EditorInfo.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
 455         onQueryTextListener = new OnQueryTextListener() {
 456             @Override
 457             public boolean onQueryTextSubmit(String query) {
 458                 Log.d(LOG, "OnQueryTextListener: onQueryTextSubmit: " + searchView.getQuery());
 459                 return true;
 460             }
 461
 462             @Override
 463             public boolean onQueryTextChange(String newText) {
 464                 Log.d(LOG, "OnQueryTextListener: onQueryTextChange: " + searchView.getQuery());
 465                 onSearchTextChange(searchView.getQuery().toString());
 466                 return true;
 467             }
 468         };
 469         searchView.setOnQueryTextListener(onQueryTextListener);
 470         searchView.setFocusable(true);
 471
 472         searchHintIcon = (ImageView) searchView.findViewById(R.id.abs__search_mag_icon);
 473         searchHintIcon.setOnClickListener(new OnClickListener() {
 474             @Override
 475             public void onClick(View arg0) {
 476                 onLanguageButtonClick();
 477             }
 478         });
 479         searchHintIcon.setOnLongClickListener(new OnLongClickListener() {
 480             @Override
 481             public boolean onLongClick(View v) {
 482                 onLanguageButtonLongClick(v.getContext());
 483                 return true;
 484             }
 485         });
 486         actionBar.setCustomView(searchView);
 487         actionBar.setDisplayShowCustomEnabled(true);
 488     }
 489
 490     @Override
 491     protected void onResume() {
 492         Log.d(LOG, "onResume");
 493         super.onResume();
 494         if (PreferenceActivity.prefsMightHaveChanged) {
 495             PreferenceActivity.prefsMightHaveChanged = false;
 496             finish();
 497             startActivity(getIntent());
 498         }
 499         showKeyboard();
 500     }
 501
 502     @Override
 503     protected void onPause() {
 504         super.onPause();
 505     }
 506
 507     @Override
 508     /**
 509      * Invoked when MyWebView returns, since the user might have clicked some
 510      * hypertext in the MyWebView.
 511      */
 512     protected void onActivityResult(int requestCode, int resultCode, Intent result) {
 513         super.onActivityResult(requestCode, resultCode, result);
 514         if (result != null && result.hasExtra(C.SEARCH_TOKEN)) {
 515             Log.d(LOG, "onActivityResult: " + result.getStringExtra(C.SEARCH_TOKEN));
 516             jumpToTextFromHyperLink(result.getStringExtra(C.SEARCH_TOKEN), indexIndex);
 517         }
 518     }
 519
 520     private static void setDictionaryPrefs(final Context context, final File dictFile,
 521             final String indexShortName, final String searchToken) {
 522         final SharedPreferences.Editor prefs = PreferenceManager.getDefaultSharedPreferences(
 523                 context).edit();
 524         prefs.putString(C.DICT_FILE, dictFile.getPath());
 525         prefs.putString(C.INDEX_SHORT_NAME, indexShortName);
 526         prefs.putString(C.SEARCH_TOKEN, ""); // Don't need to save search token.
 527         prefs.commit();
 528     }
 529
 530     @Override
 531     protected void onDestroy() {
 532         super.onDestroy();
 533         if (dictRaf == null) {
 534             return;
 535         }
 536
 537         final SearchOperation searchOperation = currentSearchOperation;
 538         currentSearchOperation = null;
 539
 540         // Before we close the RAF, we have to wind the current search down.
 541         if (searchOperation != null) {
 542             Log.d(LOG, "Interrupting search to shut down.");
 543             currentSearchOperation = null;
 544             searchOperation.interrupted.set(true);
 545         }
 546
 547         try {
 548             Log.d(LOG, "Closing RAF.");
 549             dictRaf.close();
 550         } catch (IOException e) {
 551             Log.e(LOG, "Failed to close dictionary", e);
 552         }
 553         dictRaf = null;
 554     }
 555
 556     // --------------------------------------------------------------------------
 557     // Buttons
 558     // --------------------------------------------------------------------------
 559
 560     private void showKeyboard() {
 561         // For some reason, this doesn't always work the first time.
 562         // One way to replicate the problem:
 563         // Press the "task switch" button repeatedly to pause and resume
 564         for (int delay = 1; delay <= 101; delay += 100) {
 565             searchView.postDelayed(new Runnable() {
 566                 @Override
 567                 public void run() {
 568                     Log.d(LOG, "Trying to show soft keyboard.");
 569                     final boolean searchTextHadFocus = searchView.hasFocus();
 570                     searchView.requestFocusFromTouch();
 571                     final InputMethodManager manager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 572                     manager.showSoftInput(searchView, InputMethodManager.SHOW_IMPLICIT);
 573                     if (!searchTextHadFocus) {
 574                         defocusSearchText();
 575                     }
 576                 }}, delay);
 577         }
 578     }
 579
 580     void updateLangButton() {
 581         final LanguageResources languageResources =
 582                 Language.isoCodeToResources.get(index.shortName);
 583         if (languageResources != null && languageResources.flagId != 0) {
 584             searchHintIcon.setImageResource(languageResources.flagId);
 585         } else {
 586             if (indexIndex % 2 == 0) {
 587                 searchHintIcon.setImageResource(android.R.drawable.ic_media_next);
 588             } else {
 589                 searchHintIcon.setImageResource(android.R.drawable.ic_media_previous);
 590             }
 591         }
 592         updateTTSLanguage();
 593      }
 594
 595     private void updateTTSLanguage() {
 596         if (!ttsReady || index == null || textToSpeech == null) {
 597             Log.d(LOG, "Can't updateTTSLanguage.");
 598             return;
 599         }
 600         final Locale locale = new Locale(index.sortLanguage.getIsoCode());
 601         Log.d(LOG, "Setting TTS locale to: " + locale);
 602         final int ttsResult = textToSpeech.setLanguage(locale);
 603         if (ttsResult != TextToSpeech.LANG_AVAILABLE ||
 604             ttsResult != TextToSpeech.LANG_COUNTRY_AVAILABLE) {
 605             Log.e(LOG, "TTS not available in this language: ttsResult=" + ttsResult);
 606         }
 607     }
 608
 609     void onLanguageButtonClick() {
 610         if (dictionary.indices.size() == 1) {
 611             // No need to work to switch indices.
 612             return;
 613         }
 614         if (currentSearchOperation != null) {
 615             currentSearchOperation.interrupted.set(true);
 616             currentSearchOperation = null;
 617         }
 618         setIndexAndSearchText((indexIndex + 1) % dictionary.indices.size(),
 619                 searchView.getQuery().toString());
 620     }
 621
 622     void onLanguageButtonLongClick(final Context context) {
 623         final Dialog dialog = new Dialog(context);
 624         dialog.setContentView(R.layout.select_dictionary_dialog);
 625         dialog.setTitle(R.string.selectDictionary);
 626
 627         final List<DictionaryInfo> installedDicts = application.getDictionariesOnDevice(null);
 628
 629         ListView listView = (ListView) dialog.findViewById(android.R.id.list);
 630         final Button button = new Button(listView.getContext());
 631         final String name = getString(R.string.dictionaryManager);
 632         button.setText(name);
 633         final IntentLauncher intentLauncher = new IntentLauncher(listView.getContext(),
 634                 DictionaryManagerActivity.getLaunchIntent()) {
 635             @Override
 636             protected void onGo() {
 637                 dialog.dismiss();
 638                 DictionaryActivity.this.finish();
 639             };
 640         };
 641         button.setOnClickListener(intentLauncher);
 642         listView.addHeaderView(button);
 643
 644         listView.setAdapter(new BaseAdapter() {
 645             @Override
 646             public View getView(int position, View convertView, ViewGroup parent) {
 647                 final DictionaryInfo dictionaryInfo = getItem(position);
 648
 649                 final LinearLayout result = new LinearLayout(parent.getContext());
 650
 651                 for (int i = 0; i < dictionaryInfo.indexInfos.size(); ++i) {
 652                     final IndexInfo indexInfo = dictionaryInfo.indexInfos.get(i);
 653                     final View button = application.createButton(parent.getContext(), dictionaryInfo, indexInfo);
 654                     final IntentLauncher intentLauncher = new IntentLauncher(parent.getContext(),
 655                             getLaunchIntent(
 656                                     application.getPath(dictionaryInfo.uncompressedFilename),
 657                                     indexInfo.shortName, searchView.getQuery().toString())) {
 658                         @Override
 659                         protected void onGo() {
 660                             dialog.dismiss();
 661                             DictionaryActivity.this.finish();
 662                         };
 663                     };
 664                     button.setOnClickListener(intentLauncher);
 665                     result.addView(button);
 666                 }
 667
 668                 final TextView nameView = new TextView(parent.getContext());
 669                 final String name = application
 670                         .getDictionaryName(dictionaryInfo.uncompressedFilename);
 671                 nameView.setText(name);
 672                 final LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
 673                         ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
 674                 layoutParams.width = 0;
 675                 layoutParams.weight = 1.0f;
 676                 nameView.setLayoutParams(layoutParams);
 677                 result.addView(nameView);
 678                 return result;
 679             }
 680
 681             @Override
 682             public long getItemId(int position) {
 683                 return position;
 684             }
 685
 686             @Override
 687             public DictionaryInfo getItem(int position) {
 688                 return installedDicts.get(position);
 689             }
 690
 691             @Override
 692             public int getCount() {
 693                 return installedDicts.size();
 694             }
 695         });
 696         dialog.show();
 697     }
 698
 699     void onUpDownButton(final boolean up) {
 700         if (isFiltered()) {
 701             return;
 702         }
 703         final int firstVisibleRow = getListView().getFirstVisiblePosition();
 704         final RowBase row = index.rows.get(firstVisibleRow);
 705         final TokenRow tokenRow = row.getTokenRow(true);
 706         final int destIndexEntry;
 707         if (up) {
 708             if (row != tokenRow) {
 709                 destIndexEntry = tokenRow.referenceIndex;
 710             } else {
 711                 destIndexEntry = Math.max(tokenRow.referenceIndex - 1, 0);
 712             }
 713         } else {
 714             // Down
 715             destIndexEntry = Math.min(tokenRow.referenceIndex + 1, index.sortedIndexEntries.size());
 716         }
 717         final Index.IndexEntry dest = index.sortedIndexEntries.get(destIndexEntry);
 718         Log.d(LOG, "onUpDownButton, destIndexEntry=" + dest.token);
 719         setSearchText(dest.token, false);
 720         jumpToRow(index.sortedIndexEntries.get(destIndexEntry).startRow);
 721         defocusSearchText();
 722     }
 723
 724     // --------------------------------------------------------------------------
 725     // Options Menu
 726     // --------------------------------------------------------------------------
 727
 728     final Random random = new Random();
 729
 730     @Override
 731     public boolean onCreateOptionsMenu(final Menu menu) {
 732
 733         if (PreferenceManager.getDefaultSharedPreferences(this)
 734                 .getBoolean(getString(R.string.showPrevNextButtonsKey), true)) {
 735             // Next word.
 736             nextWordMenuItem = menu.add(getString(R.string.nextWord))
 737                 .setIcon(R.drawable.arrow_down_float);
 738             nextWordMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
 739             nextWordMenuItem.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 740                     @Override
 741                     public boolean onMenuItemClick(MenuItem item) {
 742                         onUpDownButton(false);
 743                         return true;
 744                     }
 745                 });
 746
 747             // Previous word.
 748             previousWordMenuItem = menu.add(getString(R.string.previousWord))
 749                 .setIcon(R.drawable.arrow_up_float);
 750             previousWordMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
 751             previousWordMenuItem.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 752                     @Override
 753                     public boolean onMenuItemClick(MenuItem item) {
 754                         onUpDownButton(true);
 755                         return true;
 756                     }
 757                 });
 758         }
 759
 760         application.onCreateGlobalOptionsMenu(this, menu);
 761
 762         {
 763             final MenuItem dictionaryManager = menu.add(getString(R.string.dictionaryManager));
 764             dictionaryManager.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 765             dictionaryManager.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 766                 public boolean onMenuItemClick(final MenuItem menuItem) {
 767                     startActivity(DictionaryManagerActivity.getLaunchIntent());
 768                     finish();
 769                     return false;
 770                 }
 771             });
 772         }
 773
 774         {
 775             final MenuItem aboutDictionary = menu.add(getString(R.string.aboutDictionary));
 776             aboutDictionary.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
 777             aboutDictionary.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 778                 public boolean onMenuItemClick(final MenuItem menuItem) {
 779                     final Context context = getListView().getContext();
 780                     final Dialog dialog = new Dialog(context);
 781                     dialog.setContentView(R.layout.about_dictionary_dialog);
 782                     final TextView textView = (TextView) dialog.findViewById(R.id.text);
 783
 784                     final String name = application.getDictionaryName(dictFile.getName());
 785                     dialog.setTitle(name);
 786
 787                     final StringBuilder builder = new StringBuilder();
 788                     final DictionaryInfo dictionaryInfo = dictionary.getDictionaryInfo();
 789                     dictionaryInfo.uncompressedBytes = dictFile.length();
 790                     if (dictionaryInfo != null) {
 791                         builder.append(dictionaryInfo.dictInfo).append("\n\n");
 792                         builder.append(getString(R.string.dictionaryPath, dictFile.getPath()))
 793                                 .append("\n");
 794                         builder.append(
 795                                 getString(R.string.dictionarySize, dictionaryInfo.uncompressedBytes))
 796                                 .append("\n");
 797                         builder.append(
 798                                 getString(R.string.dictionaryCreationTime,
 799                                         dictionaryInfo.creationMillis)).append("\n");
 800                         for (final IndexInfo indexInfo : dictionaryInfo.indexInfos) {
 801                             builder.append("\n");
 802                             builder.append(getString(R.string.indexName, indexInfo.shortName))
 803                                     .append("\n");
 804                             builder.append(
 805                                     getString(R.string.mainTokenCount, indexInfo.mainTokenCount))
 806                                     .append("\n");
 807                         }
 808                         builder.append("\n");
 809                         builder.append(getString(R.string.sources)).append("\n");
 810                         for (final EntrySource source : dictionary.sources) {
 811                             builder.append(
 812                                     getString(R.string.sourceInfo, source.getName(),
 813                                             source.getNumEntries())).append("\n");
 814                         }
 815                     }
 816                     textView.setText(builder.toString());
 817
 818                     dialog.show();
 819                     final WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
 820                     layoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;
 821                     layoutParams.height = WindowManager.LayoutParams.MATCH_PARENT;
 822                     dialog.getWindow().setAttributes(layoutParams);
 823                     return false;
 824                 }
 825             });
 826         }
 827
 828         return true;
 829     }
 830
 831     // --------------------------------------------------------------------------
 832     // Context Menu + clicks
 833     // --------------------------------------------------------------------------
 834
 835     @Override
 836     public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
 837         AdapterContextMenuInfo adapterContextMenuInfo = (AdapterContextMenuInfo) menuInfo;
 838         final RowBase row = (RowBase) getListAdapter().getItem(adapterContextMenuInfo.position);
 839
 840         final android.view.MenuItem addToWordlist = menu.add(getString(R.string.addToWordList,
 841                 wordList.getName()));
 842         addToWordlist.setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 843             public boolean onMenuItemClick(android.view.MenuItem item) {
 844                 onAppendToWordList(row);
 845                 return false;
 846             }
 847         });
 848
 849         final android.view.MenuItem share = menu.add("Share");
 850         share.setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 851             public boolean onMenuItemClick(android.view.MenuItem item) {
 852                 Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
 853                 shareIntent.setType("text/plain");
 854                 shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, row.getTokenRow(true).getToken());
 855                 shareIntent.putExtra(android.content.Intent.EXTRA_TEXT, row.getRawText(saveOnlyFirstSubentry));
 856                 startActivity(shareIntent);
 857                 return false;
 858             }
 859         });
 860
 861         final android.view.MenuItem copy = menu.add(android.R.string.copy);
 862         copy.setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 863             public boolean onMenuItemClick(android.view.MenuItem item) {
 864                 onCopy(row);
 865                 return false;
 866             }
 867         });
 868
 869         if (selectedSpannableText != null) {
 870             final String selectedText = selectedSpannableText;
 871             final android.view.MenuItem searchForSelection = menu.add(getString(R.string.searchForSelection,
 872                     selectedSpannableText));
 873             searchForSelection.setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 874                 public boolean onMenuItemClick(android.view.MenuItem item) {
 875                     jumpToTextFromHyperLink(selectedText, selectedSpannableIndex);
 876                     return false;
 877                 }
 878             });
 879         }
 880
 881         if (row instanceof TokenRow && ttsReady) {
 882             final android.view.MenuItem speak = menu.add(R.string.speak);
 883             speak.setOnMenuItemClickListener(new android.view.MenuItem.OnMenuItemClickListener() {
 884                 @Override
 885                 public boolean onMenuItemClick(android.view.MenuItem item) {
 886                     textToSpeech.speak(((TokenRow) row).getToken(), TextToSpeech.QUEUE_FLUSH,
 887                             new HashMap<String, String>());
 888                     return false;
 889                 }
 890             });
 891         }
 892     }
 893
 894     private void jumpToTextFromHyperLink(
 895             final String selectedText, final int defaultIndexToUse) {
 896         int indexToUse = -1;
 897         for (int i = 0; i < dictionary.indices.size(); ++i) {
 898             final Index index = dictionary.indices.get(i);
 899             if (indexPrepFinished) {
 900                 System.out.println("Doing index lookup: on " + selectedText);
 901                 final IndexEntry indexEntry = index.findExact(selectedText);
 902                 if (indexEntry != null) {
 903                     final TokenRow tokenRow = index.rows.get(indexEntry.startRow)
 904                             .getTokenRow(false);
 905                     if (tokenRow != null && tokenRow.hasMainEntry) {
 906                         indexToUse = i;
 907                         break;
 908                     }
 909                 }
 910             } else {
 911                 Log.w(LOG, "Skipping findExact on index " + index.shortName);
 912             }
 913         }
 914         if (indexToUse == -1) {
 915             indexToUse = defaultIndexToUse;
 916         }
 917         // Without this extra delay, the call to jumpToRow that this
 918         // invokes doesn't always actually have any effect.
 919         final int actualIndexToUse = indexToUse;
 920         getListView().postDelayed(new Runnable() {
 921             @Override
 922             public void run() {
 923                 setIndexAndSearchText(actualIndexToUse, selectedText);
 924             }
 925         }, 100);
 926     }
 927
 928     /**
 929      * Called when user clicks outside of search text, so that they can start
 930      * typing again immediately.
 931      */
 932     void defocusSearchText() {
 933         // Log.d(LOG, "defocusSearchText");
 934         // Request focus so that if we start typing again, it clears the text
 935         // input.
 936         getListView().requestFocus();
 937
 938         // Visual indication that a new keystroke will clear the search text.
 939         // Doesn't seem to work unless earchText has focus.
 940 //        searchView.selectAll();
 941     }
 942
 943     @Override
 944     protected void onListItemClick(ListView l, View v, int row, long id) {
 945         defocusSearchText();
 946         if (clickOpensContextMenu && dictRaf != null) {
 947             openContextMenu(v);
 948         }
 949     }
 950
 951     @SuppressLint("SimpleDateFormat")
 952     void onAppendToWordList(final RowBase row) {
 953         defocusSearchText();
 954
 955         final StringBuilder rawText = new StringBuilder();
 956         rawText.append(new SimpleDateFormat("yyyy.MM.dd HH:mm:ss").format(new Date())).append("\t");
 957         rawText.append(index.longName).append("\t");
 958         rawText.append(row.getTokenRow(true).getToken()).append("\t");
 959         rawText.append(row.getRawText(saveOnlyFirstSubentry));
 960         Log.d(LOG, "Writing : " + rawText);
 961
 962         try {
 963             wordList.getParentFile().mkdirs();
 964             final PrintWriter out = new PrintWriter(new FileWriter(wordList, true));
 965             out.println(rawText.toString());
 966             out.close();
 967         } catch (IOException e) {
 968             Log.e(LOG, "Unable to append to " + wordList.getAbsolutePath(), e);
 969             Toast.makeText(this,
 970                     getString(R.string.failedAddingToWordList, wordList.getAbsolutePath()),
 971                     Toast.LENGTH_LONG).show();
 972         }
 973         return;
 974     }
 975
 976     @SuppressWarnings("deprecation")
 977     void onCopy(final RowBase row) {
 978         defocusSearchText();
 979
 980         Log.d(LOG, "Copy, row=" + row);
 981         final StringBuilder result = new StringBuilder();
 982         result.append(row.getRawText(false));
 983         final ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
 984         clipboardManager.setText(result.toString());
 985         Log.d(LOG, "Copied: " + result);
 986     }
 987
 988     @Override
 989     public boolean onKeyDown(final int keyCode, final KeyEvent event) {
 990         if (event.getUnicodeChar() != 0) {
 991             if (!searchView.hasFocus()) {
 992                 setSearchText("" + (char) event.getUnicodeChar(), true);
 993                 searchView.requestFocus();
 994             }
 995             return true;
 996         }
 997         if (keyCode == KeyEvent.KEYCODE_BACK) {
 998             // Log.d(LOG, "Clearing dictionary prefs.");
 999             // Pretend that we just autolaunched so that we won't do it again.
1000             // DictionaryManagerActivity.lastAutoLaunchMillis =
1001             // System.currentTimeMillis();
1002         }
1003         if (keyCode == KeyEvent.KEYCODE_ENTER) {
1004             Log.d(LOG, "Trying to hide soft keyboard.");
1005             final InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
1006             inputManager.hideSoftInputFromWindow(this.getCurrentFocus().getWindowToken(),
1007                     InputMethodManager.HIDE_NOT_ALWAYS);
1008             return true;
1009         }
1010         return super.onKeyDown(keyCode, event);
1011     }
1012
1013     private void setIndexAndSearchText(int newIndex, String newSearchText) {
1014         Log.d(LOG, "Changing index to: " + newIndex);
1015         if (newIndex == -1) {
1016             Log.e(LOG, "Invalid index.");
1017             newIndex = 0;
1018         }
1019         if (newIndex != indexIndex) {
1020             indexIndex = newIndex;
1021             index = dictionary.indices.get(indexIndex);
1022             indexAdapter = new IndexAdapter(index);
1023             setListAdapter(indexAdapter);
1024             Log.d(LOG, "changingIndex, newLang=" + index.longName);
1025             setDictionaryPrefs(this, dictFile, index.shortName, searchView.getQuery().toString());
1026             updateLangButton();
1027         }
1028         setSearchText(newSearchText, true);
1029     }
1030
1031     private void setSearchText(final String text, final boolean triggerSearch) {
1032         Log.d(LOG, "setSearchText, text=" + text + ", triggerSearch=" + triggerSearch);
1033         // Disable the listener, because sometimes it doesn't work.
1034         searchView.setOnQueryTextListener(null);
1035         searchView.setQuery(text, false);
1036         moveCursorToRight();
1037         searchView.setOnQueryTextListener(onQueryTextListener);
1038         if (triggerSearch) {
1039             onQueryTextListener.onQueryTextChange(text);
1040         }
1041     }
1042
1043 //    private long cursorDelayMillis = 100;
1044     private void moveCursorToRight() {
1045 //        if (searchText.getLayout() != null) {
1046 //            cursorDelayMillis = 100;
1047 //            // Surprising, but this can crash when you rotate...
1048 //            Selection.moveToRightEdge(searchView.getQuery(), searchText.getLayout());
1049 //        } else {
1050 //            uiHandler.postDelayed(new Runnable() {
1051 //                @Override
1052 //                public void run() {
1053 //                    moveCursorToRight();
1054 //                }
1055 //            }, cursorDelayMillis);
1056 //            cursorDelayMillis = Math.min(10 * 1000, 2 * cursorDelayMillis);
1057 //        }
1058     }
1059
1060     // --------------------------------------------------------------------------
1061     // SearchOperation
1062     // --------------------------------------------------------------------------
1063
1064     private void searchFinished(final SearchOperation searchOperation) {
1065         if (searchOperation.interrupted.get()) {
1066             Log.d(LOG, "Search operation was interrupted: " + searchOperation);
1067             return;
1068         }
1069         if (searchOperation != this.currentSearchOperation) {
1070             Log.d(LOG, "Stale searchOperation finished: " + searchOperation);
1071             return;
1072         }
1073
1074         final Index.IndexEntry searchResult = searchOperation.searchResult;
1075         Log.d(LOG, "searchFinished: " + searchOperation + ", searchResult=" + searchResult);
1076
1077         currentSearchOperation = null;
1078         uiHandler.postDelayed(new Runnable() {
1079             @Override
1080             public void run() {
1081                 if (currentSearchOperation == null) {
1082                     if (searchResult != null) {
1083                         if (isFiltered()) {
1084                             clearFiltered();
1085                         }
1086                         jumpToRow(searchResult.startRow);
1087                     } else if (searchOperation.multiWordSearchResult != null) {
1088                         // Multi-row search....
1089                         setFiltered(searchOperation);
1090                     } else {
1091                         throw new IllegalStateException("This should never happen.");
1092                     }
1093                 } else {
1094                     Log.d(LOG, "More coming, waiting for currentSearchOperation.");
1095                 }
1096             }
1097         }, 20);
1098     }
1099
1100     private final void jumpToRow(final int row) {
1101         Log.d(LOG, "jumpToRow: " + row + ", refocusSearchText=" + false);
1102 //        getListView().requestFocusFromTouch();
1103         getListView().setSelectionFromTop(row, 0);
1104         getListView().setSelected(true);
1105     }
1106
1107     static final Pattern WHITESPACE = Pattern.compile("\\s+");
1108
1109     final class SearchOperation implements Runnable {
1110
1111         final AtomicBoolean interrupted = new AtomicBoolean(false);
1112
1113         final String searchText;
1114
1115         List<String> searchTokens; // filled in for multiWord.
1116
1117         final Index index;
1118
1119         long searchStartMillis;
1120
1121         Index.IndexEntry searchResult;
1122
1123         List<RowBase> multiWordSearchResult;
1124
1125         boolean done = false;
1126
1127         SearchOperation(final String searchText, final Index index) {
1128             this.searchText = StringUtil.normalizeWhitespace(searchText);
1129             this.index = index;
1130         }
1131
1132         public String toString() {
1133             return String.format("SearchOperation(%s,%s)", searchText, interrupted.toString());
1134         }
1135
1136         @Override
1137         public void run() {
1138             try {
1139                 searchStartMillis = System.currentTimeMillis();
1140                 final String[] searchTokenArray = WHITESPACE.split(searchText);
1141                 if (searchTokenArray.length == 1) {
1142                     searchResult = index.findInsertionPoint(searchText, interrupted);
1143                 } else {
1144                     searchTokens = Arrays.asList(searchTokenArray);
1145                     multiWordSearchResult = index.multiWordSearch(searchText, searchTokens, interrupted);
1146                 }
1147                 Log.d(LOG,
1148                         "searchText=" + searchText + ", searchDuration="
1149                                 + (System.currentTimeMillis() - searchStartMillis)
1150                                 + ", interrupted=" + interrupted.get());
1151                 if (!interrupted.get()) {
1152                     uiHandler.post(new Runnable() {
1153                         @Override
1154                         public void run() {
1155                             searchFinished(SearchOperation.this);
1156                         }
1157                     });
1158                 } else {
1159                     Log.d(LOG, "interrupted, skipping searchFinished.");
1160                 }
1161             } catch (Exception e) {
1162                 Log.e(LOG, "Failure during search (can happen during Activity close.");
1163             } finally {
1164                 synchronized (this) {
1165                     done = true;
1166                     this.notifyAll();
1167                 }
1168             }
1169         }
1170     }
1171
1172     // --------------------------------------------------------------------------
1173     // IndexAdapter
1174     // --------------------------------------------------------------------------
1175
1176     static ViewGroup.LayoutParams WEIGHT_1 = new LinearLayout.LayoutParams(
1177             ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.MATCH_PARENT, 1.0f);
1178
1179     static ViewGroup.LayoutParams WEIGHT_0 = new LinearLayout.LayoutParams(
1180             ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.MATCH_PARENT, 0.0f);
1181
1182     final class IndexAdapter extends BaseAdapter {
1183
1184         private static final float PADDING_DEFAULT_DP = 8;
1185
1186         private static final float PADDING_LARGE_DP = 16;
1187
1188         final Index index;
1189
1190         final List<RowBase> rows;
1191
1192         final Set<String> toHighlight;
1193
1194         private int mPaddingDefault;
1195
1196         private int mPaddingLarge;
1197
1198         IndexAdapter(final Index index) {
1199             this.index = index;
1200             rows = index.rows;
1201             this.toHighlight = null;
1202             getMetrics();
1203         }
1204
1205         IndexAdapter(final Index index, final List<RowBase> rows, final List<String> toHighlight) {
1206             this.index = index;
1207             this.rows = rows;
1208             this.toHighlight = new LinkedHashSet<String>(toHighlight);
1209             getMetrics();
1210         }
1211
1212         private void getMetrics() {
1213             // Get the screen's density scale
1214             final float scale = getResources().getDisplayMetrics().density;
1215             // Convert the dps to pixels, based on density scale
1216             mPaddingDefault = (int) (PADDING_DEFAULT_DP * scale + 0.5f);
1217             mPaddingLarge = (int) (PADDING_LARGE_DP * scale + 0.5f);
1218         }
1219
1220         @Override
1221         public int getCount() {
1222             return rows.size();
1223         }
1224
1225         @Override
1226         public RowBase getItem(int position) {
1227             return rows.get(position);
1228         }
1229
1230         @Override
1231         public long getItemId(int position) {
1232             return getItem(position).index();
1233         }
1234
1235         @Override
1236         public TableLayout getView(int position, View convertView, ViewGroup parent) {
1237             final TableLayout result;
1238             if (convertView instanceof TableLayout) {
1239                 result = (TableLayout) convertView;
1240                 result.removeAllViews();
1241             } else {
1242                 result = new TableLayout(parent.getContext());
1243             }
1244             final RowBase row = getItem(position);
1245             if (row instanceof PairEntry.Row) {
1246                 return getView(position, (PairEntry.Row) row, parent, result);
1247             } else if (row instanceof TokenRow) {
1248                 return getView((TokenRow) row, parent, result);
1249             } else if (row instanceof HtmlEntry.Row) {
1250                 return getView((HtmlEntry.Row) row, parent, result);
1251             } else {
1252                 throw new IllegalArgumentException("Unsupported Row type: " + row.getClass());
1253             }
1254         }
1255
1256         private TableLayout getView(final int position, PairEntry.Row row, ViewGroup parent,
1257                 final TableLayout result) {
1258             final PairEntry entry = row.getEntry();
1259             final int rowCount = entry.pairs.size();
1260
1261             final TableRow.LayoutParams layoutParams = new TableRow.LayoutParams();
1262             layoutParams.weight = 0.5f;
1263             layoutParams.leftMargin = mPaddingLarge;
1264
1265             for (int r = 0; r < rowCount; ++r) {
1266                 final TableRow tableRow = new TableRow(result.getContext());
1267
1268                 final TextView col1 = new TextView(tableRow.getContext());
1269                 final TextView col2 = new TextView(tableRow.getContext());
1270
1271                 // Set the columns in the table.
1272                 if (r > 0) {
1273                     final TextView bullet = new TextView(tableRow.getContext());
1274                     bullet.setText(" • ");
1275                     tableRow.addView(bullet);
1276                 }
1277                 tableRow.addView(col1, layoutParams);
1278                 final TextView margin = new TextView(tableRow.getContext());
1279                 margin.setText(" ");
1280                 tableRow.addView(margin);
1281                 if (r > 0) {
1282                     final TextView bullet = new TextView(tableRow.getContext());
1283                     bullet.setText(" • ");
1284                     tableRow.addView(bullet);
1285                 }
1286                 tableRow.addView(col2, layoutParams);
1287                 col1.setWidth(1);
1288                 col2.setWidth(1);
1289
1290                 // Set what's in the columns.
1291
1292                 final Pair pair = entry.pairs.get(r);
1293                 final String col1Text = index.swapPairEntries ? pair.lang2 : pair.lang1;
1294                 final String col2Text = index.swapPairEntries ? pair.lang1 : pair.lang2;
1295
1296                 col1.setText(col1Text, TextView.BufferType.SPANNABLE);
1297                 col2.setText(col2Text, TextView.BufferType.SPANNABLE);
1298
1299                 // Bold the token instances in col1.
1300                 final Set<String> toBold = toHighlight != null ? this.toHighlight : Collections
1301                         .singleton(row.getTokenRow(true).getToken());
1302                 final Spannable col1Spannable = (Spannable) col1.getText();
1303                 for (final String token : toBold) {
1304                     int startPos = 0;
1305                     while ((startPos = col1Text.indexOf(token, startPos)) != -1) {
1306                         col1Spannable.setSpan(new StyleSpan(Typeface.BOLD), startPos, startPos
1307                                 + token.length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
1308                         startPos += token.length();
1309                     }
1310                 }
1311
1312                 createTokenLinkSpans(col1, col1Spannable, col1Text);
1313                 createTokenLinkSpans(col2, (Spannable) col2.getText(), col2Text);
1314
1315                 col1.setTypeface(typeface);
1316                 col2.setTypeface(typeface);
1317                 col1.setTextSize(TypedValue.COMPLEX_UNIT_SP, fontSizeSp);
1318                 col2.setTextSize(TypedValue.COMPLEX_UNIT_SP, fontSizeSp);
1319                 // col2.setBackgroundResource(theme.otherLangBg);
1320
1321                 if (index.swapPairEntries) {
1322                     col2.setOnLongClickListener(textViewLongClickListenerIndex0);
1323                     col1.setOnLongClickListener(textViewLongClickListenerIndex1);
1324                 } else {
1325                     col1.setOnLongClickListener(textViewLongClickListenerIndex0);
1326                     col2.setOnLongClickListener(textViewLongClickListenerIndex1);
1327                 }
1328
1329                 result.addView(tableRow);
1330             }
1331
1332             // Because we have a Button inside a ListView row:
1333             // http://groups.google.com/group/android-developers/browse_thread/thread/3d96af1530a7d62a?pli=1
1334             result.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
1335             result.setClickable(true);
1336             result.setFocusable(true);
1337             result.setLongClickable(true);
1338             result.setBackgroundResource(android.R.drawable.menuitem_background);
1339             result.setOnClickListener(new TextView.OnClickListener() {
1340                 @Override
1341                 public void onClick(View v) {
1342                     DictionaryActivity.this.onListItemClick(getListView(), v, position, position);
1343                 }
1344             });
1345
1346             return result;
1347         }
1348
1349         private TableLayout getPossibleLinkToHtmlEntryView(final boolean isTokenRow,
1350                 final String text, final boolean hasMainEntry, final List<HtmlEntry> htmlEntries,
1351                 final String htmlTextToHighlight, ViewGroup parent, final TableLayout result) {
1352             final Context context = parent.getContext();
1353
1354             final TableRow tableRow = new TableRow(result.getContext());
1355             tableRow.setBackgroundResource(hasMainEntry ? theme.tokenRowMainBg
1356                     : theme.tokenRowOtherBg);
1357             if (isTokenRow) {
1358                 tableRow.setPadding(mPaddingDefault, mPaddingDefault, mPaddingDefault, 0);
1359             } else {
1360                 tableRow.setPadding(mPaddingLarge, mPaddingDefault, mPaddingDefault, 0);
1361             }
1362             result.addView(tableRow);
1363
1364             // Make it so we can long-click on these token rows, too:
1365             final TextView textView = new TextView(context);
1366             textView.setText(text, BufferType.SPANNABLE);
1367             createTokenLinkSpans(textView, (Spannable) textView.getText(), text);
1368             final TextViewLongClickListener textViewLongClickListenerIndex0 = new TextViewLongClickListener(
1369                     0);
1370             textView.setOnLongClickListener(textViewLongClickListenerIndex0);
1371             result.setLongClickable(true);
1372
1373             // Doesn't work:
1374             // textView.setTextColor(android.R.color.secondary_text_light);
1375             textView.setTypeface(typeface);
1376             TableRow.LayoutParams lp = new TableRow.LayoutParams(0);
1377             if (isTokenRow) {
1378                 textView.setTextAppearance(context, theme.tokenRowFg);
1379                 textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 4 * fontSizeSp / 3);
1380             } else {
1381                 textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, fontSizeSp);
1382             }
1383             lp.weight = 1.0f;
1384
1385             textView.setLayoutParams(lp);
1386             tableRow.addView(textView);
1387
1388             if (!htmlEntries.isEmpty()) {
1389                 final ClickableSpan clickableSpan = new ClickableSpan() {
1390                     @Override
1391                     public void onClick(View widget) {
1392                     }
1393                 };
1394                 ((Spannable) textView.getText()).setSpan(clickableSpan, 0, text.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
1395                 result.setClickable(true);
1396                 textView.setClickable(true);
1397                 textView.setMovementMethod(LinkMovementMethod.getInstance());
1398                 textView.setOnClickListener(new OnClickListener() {
1399                     @Override
1400                     public void onClick(View v) {
1401                         String html = HtmlEntry.htmlBody(htmlEntries, index.shortName);
1402                         //Log.d(LOG, "html=" + html);
1403                         startActivityForResult(
1404                                 HtmlDisplayActivity.getHtmlIntent(String.format(
1405                                         "<html><head></head><body>%s</body></html>", html),
1406                                         htmlTextToHighlight, false),
1407                                 0);
1408                     }
1409                 });
1410             }
1411             return result;
1412         }
1413
1414         private TableLayout getView(TokenRow row, ViewGroup parent, final TableLayout result) {
1415             final IndexEntry indexEntry = row.getIndexEntry();
1416             return getPossibleLinkToHtmlEntryView(true, indexEntry.token, row.hasMainEntry,
1417                     indexEntry.htmlEntries, null, parent, result);
1418         }
1419
1420         private TableLayout getView(HtmlEntry.Row row, ViewGroup parent, final TableLayout result) {
1421             final HtmlEntry htmlEntry = row.getEntry();
1422             final TokenRow tokenRow = row.getTokenRow(true);
1423             return getPossibleLinkToHtmlEntryView(false,
1424                     getString(R.string.seeAlso, htmlEntry.title, htmlEntry.entrySource.getName()),
1425                     false, Collections.singletonList(htmlEntry), tokenRow.getToken(), parent,
1426                     result);
1427         }
1428
1429     }
1430
1431     static final Pattern CHAR_DASH = Pattern.compile("['\\p{L}\\p{M}\\p{N}]+");
1432
1433     private void createTokenLinkSpans(final TextView textView, final Spannable spannable,
1434             final String text) {
1435         // Saw from the source code that LinkMovementMethod sets the selection!
1436         // http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/2.3.1_r1/android/text/method/LinkMovementMethod.java#LinkMovementMethod
1437         textView.setMovementMethod(LinkMovementMethod.getInstance());
1438         final Matcher matcher = CHAR_DASH.matcher(text);
1439         while (matcher.find()) {
1440             spannable.setSpan(new NonLinkClickableSpan(textColorFg), matcher.start(), matcher.end(),
1441                     Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
1442         }
1443     }
1444
1445     String selectedSpannableText = null;
1446
1447     int selectedSpannableIndex = -1;
1448
1449     @Override
1450     public boolean onTouchEvent(MotionEvent event) {
1451         selectedSpannableText = null;
1452         selectedSpannableIndex = -1;
1453         return super.onTouchEvent(event);
1454     }
1455
1456     private class TextViewLongClickListener implements OnLongClickListener {
1457         final int index;
1458
1459         private TextViewLongClickListener(final int index) {
1460             this.index = index;
1461         }
1462
1463         @Override
1464         public boolean onLongClick(final View v) {
1465             final TextView textView = (TextView) v;
1466             final int start = textView.getSelectionStart();
1467             final int end = textView.getSelectionEnd();
1468             if (start >= 0 && end >= 0) {
1469                 selectedSpannableText = textView.getText().subSequence(start, end).toString();
1470                 selectedSpannableIndex = index;
1471             }
1472             return false;
1473         }
1474     }
1475
1476     final TextViewLongClickListener textViewLongClickListenerIndex0 = new TextViewLongClickListener(
1477             0);
1478
1479     final TextViewLongClickListener textViewLongClickListenerIndex1 = new TextViewLongClickListener(
1480             1);
1481
1482     // --------------------------------------------------------------------------
1483     // SearchText
1484     // --------------------------------------------------------------------------
1485
1486     void onSearchTextChange(final String text) {
1487         if ("thadolina".equals(text)) {
1488             final Dialog dialog = new Dialog(getListView().getContext());
1489             dialog.setContentView(R.layout.thadolina_dialog);
1490             dialog.setTitle("Ti amo, amore mio!");
1491             final ImageView imageView = (ImageView) dialog.findViewById(R.id.thadolina_image);
1492             imageView.setOnClickListener(new OnClickListener() {
1493                 @Override
1494                 public void onClick(View v) {
1495                     final Intent intent = new Intent(Intent.ACTION_VIEW);
1496                     intent.setData(Uri.parse("https://sites.google.com/site/cfoxroxvday/vday2012"));
1497                     startActivity(intent);
1498                 }
1499             });
1500             dialog.show();
1501         }
1502         if (dictRaf == null) {
1503             Log.d(LOG, "searchText changed during shutdown, doing nothing.");
1504             return;
1505         }
1506 //        if (!searchView.hasFocus()) {
1507 //            Log.d(LOG, "searchText changed without focus, doing nothing.");
1508 //            return;
1509 //        }
1510         Log.d(LOG, "onSearchTextChange: " + text);
1511         if (currentSearchOperation != null) {
1512             Log.d(LOG, "Interrupting currentSearchOperation.");
1513             currentSearchOperation.interrupted.set(true);
1514         }
1515         currentSearchOperation = new SearchOperation(text, index);
1516         searchExecutor.execute(currentSearchOperation);
1517     }
1518
1519     // --------------------------------------------------------------------------
1520     // Filtered results.
1521     // --------------------------------------------------------------------------
1522
1523     boolean isFiltered() {
1524         return rowsToShow != null;
1525     }
1526
1527     void setFiltered(final SearchOperation searchOperation) {
1528         if (nextWordMenuItem != null) {
1529             nextWordMenuItem.setEnabled(false);
1530             previousWordMenuItem.setEnabled(false);
1531         }
1532         rowsToShow = searchOperation.multiWordSearchResult;
1533         setListAdapter(new IndexAdapter(index, rowsToShow, searchOperation.searchTokens));
1534     }
1535
1536     void clearFiltered() {
1537         if (nextWordMenuItem != null) {
1538             nextWordMenuItem.setEnabled(true);
1539             previousWordMenuItem.setEnabled(true);
1540         }
1541         setListAdapter(new IndexAdapter(index));
1542         rowsToShow = null;
1543     }
1544
1545 }