55 lines
2.2 KiB
Java
55 lines
2.2 KiB
Java
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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.event;
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import com.android.inputmethod.latin.utils.CollectionUtils;
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import java.util.ArrayList;
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/**
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* This class implements the logic chain between receiving events and generating code points.
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*
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* Event sources are multiple. It may be a hardware keyboard, a D-PAD, a software keyboard,
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* or any exotic input source.
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* This class will orchestrate the composing chain that starts with an event as its input. Each
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* composer will be given turns one after the other.
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* The output is composed of two sequences of code points: the first, representing the already
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* finished combining part, will be shown normally as the composing string, while the second is
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* feedback on the composing state and will typically be shown with different styling such as
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* a colored background.
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*/
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public class CombinerChain {
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// TODO: Create an object type to represent input material + visual feedback + decoding state
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private final ArrayList<Combiner> mCombiners;
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/**
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* Create an combiner chain.
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*
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* The combiner chain takes events as inputs and outputs code points and combining state.
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* For example, if the input language is Japanese, the combining chain will typically perform
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* kana conversion.
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*
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* @param combinerList A list of combiners to be applied in order.
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*/
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public CombinerChain(final Combiner... combinerList) {
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mCombiners = CollectionUtils.newArrayList();
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// The dead key combiner is always active, and always first
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mCombiners.add(new DeadKeyCombiner());
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}
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}
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