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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.inputmethod.event;
     18 
     19 import java.util.ArrayList;
     20 
     21 /**
     22  * Compatibility class that stands in for the combiner chain in LatinIME.
     23  *
     24  * This is not used by dicttool, it's just needed by the dependency chain.
     25  */
     26 // TODO: there should not be a dependency to this in dicttool, so there
     27 // should be a sensible way to separate them cleanly.
     28 public class CombinerChain {
     29     private StringBuilder mComposingWord;
     30     public CombinerChain(final String initialText, final Combiner... combinerList) {
     31         mComposingWord = new StringBuilder(initialText);
     32     }
     33 
     34     public Event processEvent(final ArrayList<Event> previousEvents, final Event newEvent) {
     35         return newEvent;
     36     }
     37 
     38     public void applyProcessedEvent(final Event event) {
     39         mComposingWord.append(event.getTextToCommit());
     40     }
     41 
     42     public CharSequence getComposingWordWithCombiningFeedback() {
     43         return mComposingWord;
     44     }
     45 
     46     public void reset() {
     47         mComposingWord.setLength(0);
     48     }
     49 
     50     public static Combiner[] createCombiners(final String spec) {
     51         // Dicttool never uses a combiner at all, so we just return a zero-sized array.
     52         return new Combiner[0];
     53     }
     54 }
     55