[CB11] Get the result of the combination

Change-Id: I165ec4a24f5b1334d55c14948e4d942ec40eb33b
This commit is contained in:
Jean Chalard 2014-03-19 17:16:09 +09:00
parent 4df6bc0853
commit 835965a75e
6 changed files with 68 additions and 6 deletions

View File

@ -34,4 +34,10 @@ public interface Combiner {
* @return the resulting event.
*/
Event processEvent(ArrayList<Event> previousEvents, Event event);
/**
* Get the feedback that should be shown to the user for the current state of this combiner.
* @return A CharSequence representing the feedback to show users. It may include styles.
*/
CharSequence getCombiningStateFeedback();
}

View File

@ -16,6 +16,8 @@
package com.android.inputmethod.event;
import android.text.SpannableStringBuilder;
import com.android.inputmethod.latin.utils.CollectionUtils;
import java.util.ArrayList;
@ -33,8 +35,10 @@ import java.util.ArrayList;
* a colored background.
*/
public class CombinerChain {
// TODO: Create an object type to represent input material + visual feedback + decoding state
// The already combined text, as described above
private StringBuilder mCombinedText;
// The feedback on the composing state, as described above
private SpannableStringBuilder mStateFeedback;
private final ArrayList<Combiner> mCombiners;
/**
@ -50,9 +54,15 @@ public class CombinerChain {
mCombiners = CollectionUtils.newArrayList();
// The dead key combiner is always active, and always first
mCombiners.add(new DeadKeyCombiner());
mCombinedText = new StringBuilder();
mStateFeedback = new SpannableStringBuilder();
}
// Pass a new event through the whole chain.
/**
* Pass a new event through the whole chain.
* @param previousEvents the list of previous events in this composition
* @param newEvent the new event to process
*/
public void processEvent(final ArrayList<Event> previousEvents, final Event newEvent) {
final ArrayList<Event> modifiablePreviousEvents = new ArrayList<Event>(previousEvents);
Event event = newEvent;
@ -62,8 +72,24 @@ public class CombinerChain {
event = combiner.processEvent(modifiablePreviousEvents, event);
if (null == event) {
// Combiners return null if they eat the event.
return;
break;
}
}
if (null != event) {
mCombinedText.append(event.getTextToCommit());
}
mStateFeedback.clear();
for (int i = mCombiners.size() - 1; i >= 0; --i) {
mStateFeedback.append(mCombiners.get(i).getCombiningStateFeedback());
}
}
/**
* Get the char sequence that should be displayed as the composing word. It may include
* styling spans.
*/
public CharSequence getComposingWordWithCombiningFeedback() {
final SpannableStringBuilder s = new SpannableStringBuilder(mCombinedText);
return s.append(mStateFeedback);
}
}

View File

@ -61,4 +61,9 @@ public class DeadKeyCombiner implements Combiner {
}
}
}
@Override
public CharSequence getCombiningStateFeedback() {
return mDeadSequence;
}
}

View File

@ -18,6 +18,7 @@ package com.android.inputmethod.event;
import com.android.inputmethod.latin.Constants;
import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
import com.android.inputmethod.latin.utils.StringUtils;
/**
* Class representing a generic input event as handled by Latin IME.
@ -223,4 +224,19 @@ public class Event {
public boolean isHandled() {
return EVENT_NOT_HANDLED != mType;
}
public CharSequence getTextToCommit() {
switch (mType) {
case EVENT_MODE_KEY:
case EVENT_NOT_HANDLED:
return "";
case EVENT_INPUT_KEYPRESS:
case EVENT_TOGGLE:
return StringUtils.newSingleCodePointString(mCodePoint);
case EVENT_GESTURE:
case EVENT_SOFTWARE_GENERATED_STRING:
return mText;
}
throw new RuntimeException("Unknown event type: " + mType);
}
}

View File

@ -193,7 +193,10 @@ public final class WordComposer {
final int keyY = event.mY;
final int newIndex = size();
mCombinerChain.processEvent(mEvents, event);
mTypedWord.appendCodePoint(primaryCode);
// TODO: remove mTypedWord and compute it dynamically when necessary. We also need to
// make the views of the composing word a SpannableString.
mTypedWord.replace(0, mTypedWord.length(),
mCombinerChain.getComposingWordWithCombiningFeedback().toString());
mEvents.add(event);
refreshSize();
mCursorPositionWithinWord = mCodePointSize;

View File

@ -21,6 +21,12 @@ import com.android.inputmethod.latin.utils.CollectionUtils;
import java.util.ArrayList;
public class CombinerChain {
private StringBuilder mComposingWord = new StringBuilder();
public CombinerChain(final Combiner... combinerList) {}
public void processEvent(final ArrayList<Event> previousEvents, final Event newEvent) {}
public void processEvent(final ArrayList<Event> previousEvents, final Event newEvent) {
mComposingWord.append(newEvent.getTextToCommit());
}
public CharSequence getComposingWordWithCombiningFeedback() {
return mComposingWord;
}
}