1 package com.hughes.android.dictionary;
4 import java.io.FileOutputStream;
5 import java.io.IOException;
6 import java.io.OutputStream;
7 import java.io.RandomAccessFile;
8 import java.util.concurrent.Executor;
9 import java.util.concurrent.Executors;
10 import java.util.concurrent.atomic.AtomicBoolean;
12 import android.app.AlertDialog;
13 import android.app.ListActivity;
14 import android.content.Intent;
15 import android.content.SharedPreferences;
16 import android.graphics.Typeface;
17 import android.os.Bundle;
18 import android.os.Handler;
19 import android.preference.PreferenceManager;
20 import android.text.Editable;
21 import android.text.Spannable;
22 import android.text.TextWatcher;
23 import android.text.style.StyleSpan;
24 import android.util.Log;
25 import android.view.ContextMenu;
26 import android.view.KeyEvent;
27 import android.view.Menu;
28 import android.view.MenuItem;
29 import android.view.View;
30 import android.view.ViewGroup;
31 import android.view.ContextMenu.ContextMenuInfo;
32 import android.view.MenuItem.OnMenuItemClickListener;
33 import android.view.View.OnClickListener;
34 import android.widget.AdapterView;
35 import android.widget.BaseAdapter;
36 import android.widget.Button;
37 import android.widget.EditText;
38 import android.widget.ListView;
39 import android.widget.TableLayout;
40 import android.widget.TableRow;
41 import android.widget.TextView;
42 import android.widget.AdapterView.OnItemLongClickListener;
43 import android.widget.AdapterView.OnItemSelectedListener;
45 import com.hughes.android.dictionary.Dictionary.IndexEntry;
46 import com.hughes.android.dictionary.Dictionary.LanguageData;
47 import com.hughes.android.dictionary.Dictionary.Row;
49 public class DictionaryActivity extends ListActivity {
51 static final Intent aboutIntent = new Intent().setClassName(AboutActivity.class.getPackage().getName(), AboutActivity.class.getCanonicalName());
52 static final Intent preferencesIntent = new Intent().setClassName(PreferenceActivity.class.getPackage().getName(), PreferenceActivity.class.getCanonicalName());
54 private final Handler uiHandler = new Handler();
55 private final Executor searchExecutor = Executors.newSingleThreadExecutor();
56 private final DictionaryListAdapter dictionaryListAdapter = new DictionaryListAdapter();
59 private File wordList = new File("/sdcard/wordList.txt");
62 private File dictFile = null;
63 private RandomAccessFile dictRaf = null;
64 private Dictionary dictionary = null;
65 private LanguageData activeLangaugeData = null;
67 private SearchOperation searchOperation = null;
68 private int selectedRowIndex = -1;
69 private int selectedTokenRowIndex = -1;
72 /** Called when the activity is first created. */
74 public void onCreate(Bundle savedInstanceState) {
75 Log.d("THAD", "onCreate");
76 super.onCreate(savedInstanceState);
80 public void onResume() {
83 closeCurrentDictionary();
85 final SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
86 wordList = new File(settings.getString(getResources().getString(R.string.wordListFile), wordList.getAbsolutePath()));
87 dictFile = new File(settings.getString(getResources().getString(R.string.dictFile), "/sdcard/de-en.dict"));
88 Log.d("THAD", "wordList=" + wordList);
89 Log.d("THAD", "dictFile=" + dictFile);
91 if (!dictFile.canRead()) {
96 dictRaf = new RandomAccessFile(dictFile, "r");
97 dictionary = new Dictionary(dictRaf);
98 activeLangaugeData = dictionary.languageDatas[Entry.LANG1];
99 } catch (Exception e) {
100 throw new RuntimeException(e);
103 setContentView(R.layout.main);
105 getSearchText().addTextChangedListener(new DictionaryTextWatcher());
107 setListAdapter(dictionaryListAdapter);
110 final Button langButton = (Button) findViewById(R.id.LangButton);
111 langButton.setOnClickListener(new OnClickListener() {
112 public void onClick(View v) {
117 final Button upButton = (Button) findViewById(R.id.UpButton);
118 upButton.setOnClickListener(new OnClickListener() {
119 public void onClick(View v) {
120 final int destRowIndex;
121 final Row tokenRow = activeLangaugeData.rows.get(selectedTokenRowIndex);
122 assert tokenRow.isToken();
123 final int prevTokenIndex = tokenRow.getIndex() - 1;
124 if (selectedRowIndex == selectedTokenRowIndex && selectedRowIndex > 0) {
125 destRowIndex = activeLangaugeData.sortedIndex.get(prevTokenIndex).startRow;
127 destRowIndex = selectedTokenRowIndex;
129 jumpToRow(destRowIndex);
131 final Button downButton = (Button) findViewById(R.id.DownButton);
132 downButton.setOnClickListener(new OnClickListener() {
133 public void onClick(View v) {
134 final Row tokenRow = activeLangaugeData.rows.get(selectedTokenRowIndex);
135 assert tokenRow.isToken();
136 final int nextTokenIndex = tokenRow.getIndex() + 1;
137 final int destRowIndex;
138 if (nextTokenIndex < activeLangaugeData.sortedIndex.size()) {
139 destRowIndex = activeLangaugeData.sortedIndex.get(nextTokenIndex).startRow;
141 destRowIndex = activeLangaugeData.rows.size() - 1;
143 jumpToRow(destRowIndex);
147 registerForContextMenu(getListView());
149 // ItemSelectedListener.
150 getListView().setOnItemSelectedListener(new OnItemSelectedListener() {
151 public void onItemSelected(AdapterView<?> arg0, View arg1, int rowIndex,
153 Log.d("THAD", "onItemSelected: " + rowIndex);
154 selectedRowIndex = rowIndex;
155 selectedTokenRowIndex = activeLangaugeData.getIndexEntryForRow(rowIndex).startRow;
159 public void onNothingSelected(AdapterView<?> arg0) {
163 // LongClickListener.
164 getListView().setOnItemLongClickListener((new OnItemLongClickListener() {
165 public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int rowIndex,
167 selectedRowIndex = rowIndex;
172 onSearchTextChange("");
177 public void onStop() {
179 closeCurrentDictionary();
182 private void closeCurrentDictionary() {
184 activeLangaugeData = null;
186 if (dictRaf != null) {
189 } catch (IOException e) {
190 throw new RuntimeException(e);
195 public String getSelectedRowText() {
196 return activeLangaugeData.rowToString(activeLangaugeData.rows.get(selectedRowIndex));
199 public EditText getSearchText() {
200 return (EditText) findViewById(R.id.SearchText);
203 // ----------------------------------------------------------------
205 // ----------------------------------------------------------------
207 private MenuItem switchLanguageMenuItem = null;
210 public boolean onCreateOptionsMenu(final Menu menu) {
211 switchLanguageMenuItem = menu.add("Switch to language.");
212 switchLanguageMenuItem.setOnMenuItemClickListener(new OnMenuItemClickListener(){
213 public boolean onMenuItemClick(final MenuItem menuItem) {
218 final MenuItem preferences = menu.add("Preferences...");
219 preferences.setOnMenuItemClickListener(new OnMenuItemClickListener(){
220 public boolean onMenuItemClick(final MenuItem menuItem) {
221 startActivity(preferencesIntent);
225 final MenuItem about = menu.add("About...");
226 about.setOnMenuItemClickListener(new OnMenuItemClickListener(){
227 public boolean onMenuItemClick(final MenuItem menuItem) {
228 startActivity(aboutIntent);
236 public boolean onPrepareOptionsMenu(final Menu menu) {
237 if (dictionary != null) {
238 switchLanguageMenuItem.setTitle(String.format("Switch to %s", dictionary.languageDatas[Entry.otherLang(activeLangaugeData.lang)].language.symbol));
240 switchLanguageMenuItem.setEnabled(dictionary != null);
241 return super.onPrepareOptionsMenu(menu);
244 void switchLanguage() {
245 activeLangaugeData = dictionary.languageDatas[(activeLangaugeData == dictionary.languageDatas[0]) ? 1 : 0];
246 selectedRowIndex = 0;
247 selectedTokenRowIndex = 0;
249 dictionaryListAdapter.notifyDataSetChanged();
250 onSearchTextChange(getSearchText().getText().toString());
253 void updateLangButton() {
254 final Button langButton = (Button) findViewById(R.id.LangButton);
255 langButton.setText(activeLangaugeData.language.symbol);
258 // ----------------------------------------------------------------
260 // ----------------------------------------------------------------
263 public void onCreateContextMenu(ContextMenu menu, View v,
264 ContextMenuInfo menuInfo) {
265 if (selectedRowIndex == -1) {
268 final MenuItem addToWordlist = menu.add("Add to wordlist: " + wordList.getName());
269 addToWordlist.setOnMenuItemClickListener(new OnMenuItemClickListener() {
270 public boolean onMenuItemClick(MenuItem item) {
271 final String rawText = getSelectedRowText();
272 Log.d("THAD", "Writing : " + rawText);
274 final OutputStream out = new FileOutputStream(wordList, true);
275 out.write((rawText + "\n").getBytes());
277 } catch (IOException e) {
278 final AlertDialog alert = new AlertDialog.Builder(DictionaryActivity.this).create();
279 alert.setMessage("Failed to append to file: " + wordList.getAbsolutePath());
288 public boolean onKeyDown(int keyCode, KeyEvent event) {
289 if (event.getUnicodeChar() != 0) {
290 final EditText searchText = getSearchText();
291 if (!searchText.hasFocus()) {
292 searchText.setText("" + (char)event.getUnicodeChar());
293 onSearchTextChange(searchText.getText().toString());
294 searchText.requestFocus();
298 return super.onKeyDown(keyCode, event);
302 protected void onListItemClick(ListView l, View v, int row, long id) {
303 selectedRowIndex = row;
304 Log.d("THAD", "Clicked: " + getSelectedRowText());
305 openContextMenu(getListView());
308 void onSearchTextChange(final String searchText) {
309 Log.d("THAD", "onSearchTextChange: " + searchText);
310 if (searchOperation != null) {
311 searchOperation.interrupted.set(true);
313 searchOperation = new SearchOperation(searchText);
314 searchExecutor.execute(searchOperation);
317 private void jumpToRow(final int rowIndex) {
318 Log.d("THAD", "jumpToRow: " + rowIndex);
319 selectedRowIndex = rowIndex;
320 selectedTokenRowIndex = activeLangaugeData.getIndexEntryForRow(rowIndex).startRow;
321 getListView().setSelection(rowIndex);
322 getListView().setSelected(true); // TODO: is this doing anything?
326 private void updateSearchText() {
327 final EditText searchText = getSearchText();
328 if (!searchText.hasFocus()) {
329 // TODO: Not so nice:
330 final String word = activeLangaugeData.getIndexEntryForRow(selectedRowIndex).word;
331 if (!word.equals(searchText.getText().toString())) {
332 Log.d("THAD", "updateSearchText: setText: " + word);
333 searchText.setText(word);
338 private final class SearchOperation implements Runnable {
339 final String searchText;
340 final AtomicBoolean interrupted = new AtomicBoolean(false);
342 public SearchOperation(final String searchText) {
343 this.searchText = searchText;
347 Log.d("THAD", "SearchOperation: " + searchText);
348 final int indexLocation = activeLangaugeData.lookup(searchText, interrupted);
349 if (interrupted.get()) {
352 final IndexEntry indexEntry = activeLangaugeData.sortedIndex
354 uiHandler.post(new Runnable() {
356 jumpToRow(indexEntry.startRow);
362 private class DictionaryListAdapter extends BaseAdapter {
364 public int getCount() {
365 return dictionary != null ? activeLangaugeData.rows.size() : 0;
368 public Dictionary.Row getItem(int rowIndex) {
369 assert rowIndex < activeLangaugeData.rows.size();
370 return activeLangaugeData.rows.get(rowIndex);
373 public long getItemId(int rowIndex) {
377 public View getView(final int rowIndex, final View convertView,
378 final ViewGroup parent) {
379 final Row row = getItem(rowIndex);
383 TextView result = null;
384 if (convertView instanceof TextView) {
385 result = (TextView) convertView;
387 result = new TextView(parent.getContext());
389 result.setText(activeLangaugeData.rowToString(row));
390 result.setTextAppearance(parent.getContext(),
391 android.R.style.TextAppearance_Large);
392 result.setClickable(false);
397 final TableLayout result = new TableLayout(parent.getContext());
399 final Entry entry = dictionary.entries.get(row.getIndex());
400 final int rowCount = entry.getRowCount();
401 for (int r = 0; r < rowCount; ++r) {
402 final TableRow tableRow = new TableRow(result.getContext());
404 TextView column1 = new TextView(tableRow.getContext());
405 TextView column2 = new TextView(tableRow.getContext());
406 final TableRow.LayoutParams layoutParams = new TableRow.LayoutParams();
407 layoutParams.weight = 0.5f;
410 final TextView spacer = new TextView(tableRow.getContext());
411 spacer.setText(r == 0 ? "
\95 " : "
\95 ");
412 tableRow.addView(spacer);
414 tableRow.addView(column1, layoutParams);
416 final TextView spacer = new TextView(tableRow.getContext());
417 spacer.setText(r == 0 ? "
\95 " : "
\95 ");
418 tableRow.addView(spacer);
420 tableRow.addView(column2, layoutParams);
424 // column1.setTextAppearance(parent.getContext(), android.R.style.Text);
426 // TODO: highlight query word in entries.
427 final String col1Text = entry.getAllText(activeLangaugeData.lang)[r];
428 column1.setText(col1Text, TextView.BufferType.SPANNABLE);
429 final Spannable col1Spannable = (Spannable) column1.getText();
431 final String token = activeLangaugeData.getIndexEntryForRow(rowIndex).word;
432 while ((startPos = col1Text.indexOf(token, startPos)) != -1) {
433 col1Spannable.setSpan(new StyleSpan(Typeface.BOLD), startPos, startPos + token.length(), Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
434 startPos += token.length();
437 column2.setText(entry.getAllText(Entry.otherLang(activeLangaugeData.lang))[r], TextView.BufferType.NORMAL);
439 result.addView(tableRow);
444 } // DictionaryListAdapter
446 private class DictionaryTextWatcher implements TextWatcher {
447 public void afterTextChanged(Editable searchText) {
448 if (getSearchText().hasFocus()) {
449 onSearchTextChange(searchText.toString());
453 public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
457 public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {