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Merge "Followup TBR in I87060049" into gingerbread

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This commit is contained in:
Tadashi G. Takaoka 2010-09-03 00:37:59 -07:00 committed by Android (Google) Code Review
commit 5583cb0afc
1 changed files with 33 additions and 2 deletions
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35
java/src/com/android/inputmethod/latin/KeyDetector.java
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@ -24,11 +24,15 @@ import java.util.List;
abstract class KeyDetector {
protected Keyboard mKeyboard;
private Key[] mKeys;
protected int mCorrectionX;
protected int mCorrectionY;
protected boolean mProximityCorrectOn;
protected int mProximityThresholdSquare;
public Key[] setKeyboard(Keyboard keyboard, float correctionX, float correctionY) {
@ -54,7 +58,7 @@ abstract class KeyDetector {
protected Key[] getKeys() {
if (mKeys == null)
throw new IllegalStateException("keyboard isn't set");
// mKeyboard is guaranteed not null at setKeybaord() method
// mKeyboard is guaranteed not to be null at setKeybaord() method if mKeys is not null
return mKeys;
}
@ -70,13 +74,40 @@ abstract class KeyDetector {
mProximityThresholdSquare = threshold * threshold;
}
/**
* Allocates array that can hold all key indices returned by {@link #getKeyIndexAndNearbyCodes}
* method. The maximum size of the array should be computed by {@link #getMaxNearbyKeys}.
*
* @return Allocates and returns an array that can hold all key indices returned by
* {@link #getKeyIndexAndNearbyCodes} method. All elements in the returned array are
* initialized by {@link com.android.inputmethod.latin.LatinKeyboardView.NOT_A_KEY}
* value.
*/
public int[] newCodeArray() {
int[] codes = new int[getMaxNearbyKeys()];
Arrays.fill(codes, LatinKeyboardBaseView.NOT_A_KEY);
return codes;
}
/**
* Computes maximum size of the array that can contain all nearby key indices returned by
* {@link #getKeyIndexAndNearbyCodes}.
*
* @return Returns maximum size of the array that can contain all nearby key indices returned
* by {@link #getKeyIndexAndNearbyCodes}.
*/
abstract protected int getMaxNearbyKeys();
/**
* Finds all possible nearby key indices around a touch event point and returns the nearest key
* index. The algorithm to determine the nearby keys depends on the threshold set by
* {@link #setProximityThreshold(int)} and the mode set by
* {@link #setProximityCorrectionEnabled(boolean)}.
*
* @param x The x-coordinate of a touch point
* @param y The y-coordinate of a touch point
* @param allKeys All nearby key indices are returned in this array
* @return The nearest key index
*/
abstract public int getKeyIndexAndNearbyCodes(int x, int y, int[] allKeys);
}
}