/**
* handle a vertical or horizontal fling from within this Activity. If we have only shown the
* first half of the current card so far, then the second half is shown to the user. Otherwise, a
* new card is displayed.
*
* <p>Called by {@link AxialFlingListener} when it detects a vertical or horizontal fling.
*/
private void handleFling(boolean isCorrectGuess) {
if (FlashcardApp.getInstance().isShowEntireCard()) {
// if we are already waiting for a card, ignore extra fling.
if (_waitingForNextCard) {
return;
}
_waitingForNextCard = true;
MsgDispatcher.sendMessageToController(MsgType.MSG_GET_NEXT_FC, 0, 0, null);
Flashcard fc = FlashcardApp.getInstance().getCurrentFlashcard();
if (fc != null) {
// save current fc as the previous fc. must clone it as the one
// we send to update guess count may be released soon.
if (_prevFlashcard != null) _prevFlashcard.release();
_prevFlashcard = fc.clone();
int arg1 = isCorrectGuess ? 1 : 0;
MsgDispatcher.sendMessageToController(MsgType.MSG_FC_GUESS_RESULT, arg1, 0, fc);
}
} else {
FlashcardApp.getInstance().setShowEntireCard(true);
updateDisplay();
}
}
/** Insert a set of flashcards (linked list) in a single transaction. */
private void insertFlashcardSet(Flashcard head) {
openDB();
SQLiteStatement stmt = getCompiledStatement(SQL_INSERT_FC);
boolean gotError = false;
_curDB.beginTransaction();
try {
for (Flashcard fc = head; fc != null; fc = Flashcard.Chain.getNext(fc)) {
stmt.bindLong(1, _importState.getRandomId());
stmt.bindString(2, fc.getLang1Str());
stmt.bindString(3, fc.getLang2Str());
stmt.execute();
}
_curDB.setTransactionSuccessful();
} catch (SQLException e) {
gotError = true;
MsgDispatcher.sendMessageToUI(MsgType.MSG_SHOW_ERROR_MSG, 0, 0, "unable to insert fc");
} finally {
_curDB.endTransaction();
}
Flashcard.Chain.releaseChain(head);
// tell controller to send us more data if insert went fine.
if (!gotError) {
MsgDispatcher.sendMessageToController(MsgType.MSG_CONTINUE_IMPORT, 0, 0, null);
}
}
/**
* the actual implementation of query. This just does a straight attempt to query for up to {@link
* #requiredCount} flashcards from the table starting at the given id and level. This function
* will not attempt to wrap to the beginning of the table if insufficient results were found.
*
* <p>The results of this query will be added to the passed in {@link QueryResult} object.
*/
private void queryNoWrap(QueryResult qr, int level, int minId, int requiredCount) {
Cursor c = _curDB.rawQuery(SQL_QUERY2, new String[] {"" + minId});
if (c.moveToFirst()) {
do {
// extract fc from cursor and prepend to result chain.
Flashcard fc = cursorToFlashcard(c);
qr.head = Flashcard.Chain.append(qr.head, fc);
if (fc.getID() > qr.maxId) qr.maxId = fc.getID();
++qr.count;
} while (c.moveToNext() && qr.count < requiredCount);
}
c.close();
}
/** Convert the current cursor row to a flashcard object. */
private Flashcard cursorToFlashcard(Cursor c) {
Flashcard fc = Flashcard.acquire();
fc.setID(c.getInt(0));
fc.setLang1Str(c.getString(1));
fc.setLang2Str(c.getString(2));
fc.setLevel(c.getInt(3));
fc.setRightGuessCount(c.getInt(4));
return fc;
}
/** update the level and count for the given flashcard in the database. */
private void updateFlashcard(Flashcard fc) {
openDB();
_curDB.beginTransaction();
try {
// Delete old entry if any.
SQLiteStatement dStmt = getCompiledStatement(SQL_DELETE_FCS);
dStmt.bindString(1, fc.getLang1Str());
dStmt.execute();
// insert new state entry.
SQLiteStatement iStmt = getCompiledStatement(SQL_INSERT_FCS);
iStmt.bindString(1, fc.getLang1Str());
iStmt.bindLong(2, fc.getLevel());
iStmt.bindLong(3, fc.getRightGuessCount());
iStmt.execute();
_curDB.setTransactionSuccessful();
} catch (SQLException e) {
MsgDispatcher.sendMessageToUI(
MsgType.MSG_SHOW_ERROR_MSG, 0, 0, "unable to update id=" + fc.getID());
} finally {
_curDB.endTransaction();
}
// this flashcard is no longer used by anyone so release it.
fc.release();
}
public Flashcard getPreviousCard() {
if (hasActiveCards()) {
while (true) {
cardIndex--;
if (cardIndex < 0) {
cardIndex = flashcards.size() - 1;
}
activeCard = flashcards.get(cardIndex);
if (activeCard.getActive()) {
return activeCard;
}
}
}
return activeCard;
}
public Flashcard getNextCard() {
if (hasActiveCards()) {
while (true) {
cardIndex++;
if (cardIndex == flashcards.size()) {
cardIndex = 0;
}
activeCard = flashcards.get(cardIndex);
if (activeCard.getActive()) {
return activeCard;
}
}
}
return activeCard;
}
/**
* update the display to show the current flashcard. Either the entire flashcard is shown or just
* the first half depending on the value of the {@link #_showEntireCard} variable.
*/
private void updateDisplay() {
Flashcard fc = FlashcardApp.getInstance().getCurrentFlashcard();
if (fc == null) {
return;
}
String lang1Text = fc.getLang1Str();
String lang2Text = "";
if (FlashcardApp.getInstance().isShowEntireCard()) {
lang2Text = fc.getLang2Str();
}
_topText.setText(StringFormatter.formatEnglishString(lang1Text));
_bottomText.setText(StringFormatter.formatSpanishString(lang2Text));
_statusText.setText(
"id: "
+ fc.getID()
+ " level: "
+ fc.getLevel()
+ " count: "
+ fc.getRightGuessCount());
}
public void flipActiveCard() {
getActiveCard().setNativeFirst(!activeCard.getNativeFirst());
}
public String getActiveCardBack() {
return getActiveCard().getNativeFirst() ? activeCard.getForeign() : activeCard.getText();
}
public Flashcard getActiveCard() {
if (activeCard.equals(nullCard) && activeCards > 0) {
activeCard = flashcards.get(cardIndex);
}
return activeCard;
}