* commit '14d985bdbdfd4a237add1009912a6920573c1a9d': [HW7] Introduce consumed events
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commit
1f9ece1ca9
5 changed files with 31 additions and 15 deletions
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@ -84,6 +84,8 @@ public class CombinerChain {
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* Process an event through the combining chain, and return a processed event to apply.
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* @param previousEvents the list of previous events in this composition
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* @param newEvent the new event to process
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* @return the processed event. It may be the same event, or a consumed event, or a completely
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* new event. However it may never be null.
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*/
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public Event processEvent(final ArrayList<Event> previousEvents, final Event newEvent) {
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final ArrayList<Event> modifiablePreviousEvents = new ArrayList<>(previousEvents);
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@ -32,12 +32,11 @@ public class DeadKeyCombiner implements Combiner {
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@Override
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public Event processEvent(final ArrayList<Event> previousEvents, final Event event) {
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if (null == event) return null; // Just in case some combiner is broken
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if (TextUtils.isEmpty(mDeadSequence)) {
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if (event.isDead()) {
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mDeadSequence.appendCodePoint(event.mCodePoint);
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}
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return event;
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return Event.createConsumedEvent(event);
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} else {
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// TODO: Allow combining for several dead chars rather than only the first one.
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// The framework doesn't know how to do this now.
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@ -67,6 +67,8 @@ public class Event {
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final private static int FLAG_DEAD = 0x1;
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// This event is coming from a key repeat, software or hardware.
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final private static int FLAG_REPEAT = 0x2;
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// This event has already been consumed.
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final private static int FLAG_CONSUMED = 0x4;
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final private int mEventType; // The type of event - one of the constants above
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// The code point associated with the event, if relevant. This is a unicode code point, and
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@ -219,6 +221,17 @@ public class Event {
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null /* next */);
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}
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/**
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* Creates an event identical to the passed event, but that has already been consumed.
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* @param source the event to copy the properties of.
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* @return an identical event marked as consumed.
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*/
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public static Event createConsumedEvent(final Event source) {
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return new Event(source.mEventType, source.mText, source.mCodePoint, source.mKeyCode,
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source.mX, source.mY, source.mSuggestedWordInfo, source.mFlags | FLAG_CONSUMED,
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source.mNextEvent);
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}
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public static Event createNotHandledEvent() {
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return new Event(EVENT_TYPE_NOT_HANDLED, null /* text */, NOT_A_CODE_POINT, NOT_A_KEY_CODE,
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Constants.NOT_A_COORDINATE, Constants.NOT_A_COORDINATE,
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@ -241,6 +254,8 @@ public class Event {
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return 0 != (FLAG_REPEAT & mFlags);
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}
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public boolean isConsumed() { return 0 != (FLAG_CONSUMED & mFlags); }
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// Returns whether this is a fake key press from the suggestion strip. This happens with
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// punctuation signs selected from the suggestion strip.
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public boolean isSuggestionStripPress() {
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@ -111,7 +111,7 @@ public class MyanmarReordering implements Combiner {
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* Clears the currently combining stream of events and returns the resulting software text
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* event corresponding to the stream. Optionally adds a new event to the cleared stream.
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* @param newEvent the new event to add to the stream. null if none.
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* @return the resulting software text event. Null if none.
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* @return the resulting software text event. Never null.
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*/
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private Event clearAndGetResultingEvent(final Event newEvent) {
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final CharSequence combinedText;
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@ -124,7 +124,7 @@ public class MyanmarReordering implements Combiner {
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if (null != newEvent) {
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mCurrentEvents.add(newEvent);
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}
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return null == combinedText ? null
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return null == combinedText ? Event.createConsumedEvent(newEvent)
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: Event.createSoftwareTextEvent(combinedText, Event.NOT_A_KEY_CODE);
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}
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@ -135,7 +135,7 @@ public class MyanmarReordering implements Combiner {
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final Event lastEvent = getLastEvent();
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if (null == lastEvent) {
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mCurrentEvents.add(newEvent);
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return null;
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return Event.createConsumedEvent(newEvent);
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} else if (isConsonantOrMedial(lastEvent.mCodePoint)) {
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final Event resultingEvent = clearAndGetResultingEvent(null);
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mCurrentEvents.add(Event.createSoftwareKeypressEvent(ZERO_WIDTH_NON_JOINER,
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@ -151,7 +151,7 @@ public class MyanmarReordering implements Combiner {
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final Event lastEvent = getLastEvent();
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if (null == lastEvent) {
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mCurrentEvents.add(newEvent);
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return null;
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return Event.createConsumedEvent(newEvent);
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} else if (VOWEL_E == lastEvent.mCodePoint) {
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final int eventSize = mCurrentEvents.size();
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if (eventSize >= 2
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@ -162,7 +162,7 @@ public class MyanmarReordering implements Combiner {
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mCurrentEvents.remove(eventSize - 2);
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mCurrentEvents.add(newEvent);
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mCurrentEvents.add(lastEvent);
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return null;
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return Event.createConsumedEvent(newEvent);
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}
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// If there is already a consonant, then we are starting a new syllable.
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for (int i = eventSize - 2; i >= 0; --i) {
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@ -174,7 +174,7 @@ public class MyanmarReordering implements Combiner {
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mCurrentEvents.remove(eventSize - 1);
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mCurrentEvents.add(newEvent);
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mCurrentEvents.add(lastEvent);
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return null;
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return Event.createConsumedEvent(newEvent);
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} else { // lastCodePoint is a consonant/medial. But if it's something else it's fine
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return clearAndGetResultingEvent(newEvent);
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}
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@ -182,7 +182,7 @@ public class MyanmarReordering implements Combiner {
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final Event lastEvent = getLastEvent();
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if (null == lastEvent) {
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mCurrentEvents.add(newEvent);
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return null;
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return Event.createConsumedEvent(newEvent);
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} else if (VOWEL_E == lastEvent.mCodePoint) {
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final int eventSize = mCurrentEvents.size();
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// If there is already a consonant, then we are in the middle of a syllable, and we
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@ -198,7 +198,7 @@ public class MyanmarReordering implements Combiner {
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mCurrentEvents.remove(eventSize - 1);
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mCurrentEvents.add(newEvent);
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mCurrentEvents.add(lastEvent);
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return null;
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return Event.createConsumedEvent(newEvent);
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}
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// Otherwise, we just commit everything.
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return clearAndGetResultingEvent(null);
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@ -228,10 +228,10 @@ public class MyanmarReordering implements Combiner {
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mCurrentEvents.remove(eventSize - 1);
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}
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}
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return null;
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return Event.createConsumedEvent(newEvent);
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} else if (eventSize > 0) {
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mCurrentEvents.remove(eventSize - 1);
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return null;
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return Event.createConsumedEvent(newEvent);
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}
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}
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}
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@ -177,7 +177,7 @@ public final class WordComposer {
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/**
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* Process an event and return an event, and return a processed event to apply.
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* @param event the unprocessed event.
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* @return the processed event.
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* @return the processed event. Never null, but may be marked as consumed.
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*/
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public Event processEvent(final Event event) {
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final Event processedEvent = mCombinerChain.processEvent(mEvents, event);
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@ -191,14 +191,14 @@ public final class WordComposer {
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* All input events should be supported, including software/hardware events, characters as well
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* as deletions, multiple inputs and gestures.
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*
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* @param event the event to apply.
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* @param event the event to apply. Must not be null.
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*/
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public void applyProcessedEvent(final Event event) {
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mCombinerChain.applyProcessedEvent(event);
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final int primaryCode = event.mCodePoint;
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final int keyX = event.mX;
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final int keyY = event.mY;
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final int newIndex = size();
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mCombinerChain.applyProcessedEvent(event);
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refreshTypedWordCache();
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mCursorPositionWithinWord = mCodePointSize;
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// We may have deleted the last one.
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