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Refactor PointerTracker to add isValidKeyIndex() predicate.

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Bug: 2910379
Change-Id: If2b28764dc777bb62949a95bc61c4a16ff152220
This commit is contained in:
Tadashi G. Takaoka 2010-09-01 17:50:24 +09:00
parent c6cb2ec1f3
commit c6df09182c
1 changed files with 32 additions and 22 deletions
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54
java/src/com/android/inputmethod/latin/PointerTracker.java
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@ -100,21 +100,25 @@ public class PointerTracker {
mKeyDebounceThresholdSquared = (int)(hysteresisPixel * hysteresisPixel);
}
private boolean isValidKeyIndex(int keyIndex) {
return keyIndex >= 0 && keyIndex < mKeys.length;
}
public Key getKey(int keyIndex) {
return (keyIndex >= 0 && keyIndex < mKeys.length) ? mKeys[keyIndex] : null;
return isValidKeyIndex(keyIndex) ? mKeys[keyIndex] : null;
}
public void updateKey(int keyIndex) {
int oldKeyIndex = mPreviousKey;
mPreviousKey = keyIndex;
if (keyIndex != oldKeyIndex) {
if (oldKeyIndex != NOT_A_KEY && oldKeyIndex < mKeys.length) {
if (isValidKeyIndex(oldKeyIndex)) {
// if new key index is not a key, old key was just released inside of the key.
final boolean inside = (keyIndex == NOT_A_KEY);
mKeys[oldKeyIndex].onReleased(inside);
mProxy.invalidateKey(mKeys[oldKeyIndex]);
}
if (keyIndex != NOT_A_KEY && keyIndex < mKeys.length) {
if (isValidKeyIndex(keyIndex)) {
mKeys[keyIndex].onPressed();
mProxy.invalidateKey(mKeys[keyIndex]);
}
@ -130,14 +134,14 @@ public class PointerTracker {
startTimeDebouncing(eventTime);
checkMultiTap(eventTime, keyIndex);
if (mListener != null) {
int primaryCode = (keyIndex != NOT_A_KEY) ? mKeys[keyIndex].codes[0] : 0;
int primaryCode = isValidKeyIndex(keyIndex) ? mKeys[keyIndex].codes[0] : 0;
mListener.onPress(primaryCode);
}
if (keyIndex >= 0 && mKeys[keyIndex].repeatable) {
repeatKey(keyIndex);
mHandler.startKeyRepeatTimer(REPEAT_START_DELAY, keyIndex, this);
}
if (keyIndex != NOT_A_KEY) {
if (isValidKeyIndex(keyIndex)) {
if (mKeys[keyIndex].repeatable) {
repeatKey(keyIndex);
mHandler.startKeyRepeatTimer(REPEAT_START_DELAY, keyIndex, this);
}
mHandler.startLongPressTimer(keyIndex, LONGPRESS_TIMEOUT);
}
showKeyPreviewAndUpdateKey(keyIndex);
@ -146,7 +150,7 @@ public class PointerTracker {
public void onMoveEvent(int touchX, int touchY, long eventTime) {
int keyIndex = mKeyDetector.getKeyIndexAndNearbyCodes(touchX, touchY, null);
if (keyIndex != NOT_A_KEY) {
if (isValidKeyIndex(keyIndex)) {
if (mCurrentKey == NOT_A_KEY) {
updateTimeDebouncing(eventTime);
mCurrentKey = keyIndex;
@ -195,7 +199,7 @@ public class PointerTracker {
if (!wasInKeyRepeat && !mProxy.isMiniKeyboardOnScreen()) {
detectAndSendKey(mCurrentKey, touchX, touchY, eventTime);
}
if (keyIndex != NOT_A_KEY && keyIndex < mKeys.length)
if (isValidKeyIndex(keyIndex))
mProxy.invalidateKey(mKeys[keyIndex]);
}
@ -205,15 +209,17 @@ public class PointerTracker {
mProxy.dismissPopupKeyboard();
showKeyPreviewAndUpdateKey(NOT_A_KEY);
int keyIndex = mCurrentKey;
if (keyIndex != NOT_A_KEY && keyIndex < mKeys.length)
if (isValidKeyIndex(keyIndex))
mProxy.invalidateKey(mKeys[keyIndex]);
}
public void repeatKey(int keyIndex) {
Key key = mKeys[keyIndex];
// While key is repeating, because there is no need to handle multi-tap key, we can pass
// -1 as eventTime argument.
detectAndSendKey(keyIndex, key.x, key.y, -1);
Key key = getKey(keyIndex);
if (key != null) {
// While key is repeating, because there is no need to handle multi-tap key, we can
// pass -1 as eventTime argument.
detectAndSendKey(keyIndex, key.x, key.y, -1);
}
}
// These package scope methods are only for debugging purpose.
@ -253,7 +259,7 @@ public class PointerTracker {
throw new IllegalStateException("keyboard and/or hysteresis not set");
if (newKey == curKey) {
return true;
} else if (curKey >= 0 && curKey < mKeys.length) {
} else if (isValidKeyIndex(curKey)) {
return getSquareDistanceToKeyEdge(x, y, mKeys[curKey])
< mKeyDebounceThresholdSquared;
} else {
@ -303,7 +309,7 @@ public class PointerTracker {
}
private void detectAndSendKey(int index, int x, int y, long eventTime) {
if (index != NOT_A_KEY && index < mKeys.length) {
if (isValidKeyIndex(index)) {
final Key key = mKeys[index];
OnKeyboardActionListener listener = mListener;
if (key.text != null) {
@ -366,11 +372,15 @@ public class PointerTracker {
}
private void checkMultiTap(long eventTime, int keyIndex) {
if (keyIndex == NOT_A_KEY) return;
Key key = mKeys[keyIndex];
Key key = getKey(keyIndex);
if (key == null)
return;
final boolean isMultiTap =
(eventTime < mLastTapTime + MULTITAP_INTERVAL && keyIndex == mLastSentIndex);
if (key.codes.length > 1) {
mInMultiTap = true;
if (eventTime < mLastTapTime + MULTITAP_INTERVAL && keyIndex == mLastSentIndex) {
if (isMultiTap) {
mTapCount = (mTapCount + 1) % key.codes.length;
return;
} else {
@ -378,7 +388,7 @@ public class PointerTracker {
return;
}
}
if (eventTime > mLastTapTime + MULTITAP_INTERVAL || keyIndex != mLastSentIndex) {
if (!isMultiTap) {
resetMultiTap();
}
}