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Merge "Delete CR LF at the same time with one backspace key." into nyc-dev

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This commit is contained in:
Seigo Nonaka
2016-04-13 05:14:24 +00:00
committed by Android (Google) Code Review
parent aceda5b93a 4d19160ef1
commit 363a2884c9
1 changed files with 25 additions and 12 deletions
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37
core/java/android/text/method/BaseKeyListener.java
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@@ -48,6 +48,9 @@ public abstract class BaseKeyListener extends MetaKeyKeyListener
implements KeyListener {
/* package */ static final Object OLD_SEL_START = new NoCopySpan.Concrete();
private static final int LINE_FEED = 0x0A;
private static final int CARRIAGE_RETURN = 0x0D;
private final Object mLock = new Object();
@GuardedBy("mLock")
@@ -110,34 +113,37 @@ public abstract class BaseKeyListener extends MetaKeyKeyListener
// Initial state
final int STATE_START = 0;
// The offset is immediately before line feed.
final int STATE_LF = 1;
// The offset is immediately before a KEYCAP.
final int STATE_BEFORE_KEYCAP = 1;
final int STATE_BEFORE_KEYCAP = 2;
// The offset is immediately before a variation selector and a KEYCAP.
final int STATE_BEFORE_VS_AND_KEYCAP = 2;
final int STATE_BEFORE_VS_AND_KEYCAP = 3;
// The offset is immediately before an emoji modifier.
final int STATE_BEFORE_EMOJI_MODIFIER = 3;
final int STATE_BEFORE_EMOJI_MODIFIER = 4;
// The offset is immediately before a variation selector and an emoji modifier.
final int STATE_BEFORE_VS_AND_EMOJI_MODIFIER = 4;
final int STATE_BEFORE_VS_AND_EMOJI_MODIFIER = 5;
// The offset is immediately before a variation selector.
final int STATE_BEFORE_VS = 5;
final int STATE_BEFORE_VS = 6;
// The offset is immediately before a ZWJ emoji.
final int STATE_BEFORE_ZWJ_EMOJI = 6;
final int STATE_BEFORE_ZWJ_EMOJI = 7;
// The offset is immediately before a ZWJ that were seen before a ZWJ emoji.
final int STATE_BEFORE_ZWJ = 7;
final int STATE_BEFORE_ZWJ = 8;
// The offset is immediately before a variation selector and a ZWJ that were seen before a
// ZWJ emoji.
final int STATE_BEFORE_VS_AND_ZWJ = 8;
final int STATE_BEFORE_VS_AND_ZWJ = 9;
// The number of following RIS code points is odd.
final int STATE_ODD_NUMBERED_RIS = 9;
final int STATE_ODD_NUMBERED_RIS = 10;
// The number of following RIS code points is even.
final int STATE_EVEN_NUMBERED_RIS = 10;
final int STATE_EVEN_NUMBERED_RIS = 11;
// The state machine has been stopped.
final int STATE_FINISHED = 11;
final int STATE_FINISHED = 12;
int deleteCharCount = 0; // Char count to be deleted by backspace.
int lastSeenVSCharCount = 0; // Char count of previous variation selector.
@@ -152,7 +158,9 @@ public abstract class BaseKeyListener extends MetaKeyKeyListener
switch (state) {
case STATE_START:
deleteCharCount = Character.charCount(codePoint);
if (isVariationSelector(codePoint)) {
if (codePoint == LINE_FEED) {
state = STATE_LF;
} else if (isVariationSelector(codePoint)) {
state = STATE_BEFORE_VS;
} else if (Emoji.isZwjEmoji(codePoint)) {
state = STATE_BEFORE_ZWJ_EMOJI;
@@ -166,6 +174,11 @@ public abstract class BaseKeyListener extends MetaKeyKeyListener
state = STATE_FINISHED;
}
break;
case STATE_LF:
if (codePoint == CARRIAGE_RETURN) {
++deleteCharCount;
}
state = STATE_FINISHED;
case STATE_ODD_NUMBERED_RIS:
if (Emoji.isRegionalIndicatorSymbol(codePoint)) {
deleteCharCount += 2; /* Char count of RIS */