55 lines
2.8 KiB
Java
55 lines
2.8 KiB
Java
/*
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* Copyright (C) 2013 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.latin.inputlogic;
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/**
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* Class for managing space states.
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*
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* At any given time, the input logic is in one of five possible space states. Depending on the
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* current space state, some behavior will change; the prime example of this is the PHANTOM state,
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* in which any subsequent letter input will input a space before the letter. Read on the
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* description inside this class for each of the space states.
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*/
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public class SpaceState {
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// None: the state where all the keyboard behavior is the most "standard" and no automatic
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// input is added or removed. In this state, all self-inserting keys only insert themselves,
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// and backspace removes one character.
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public static final int NONE = 0;
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// Double space: the state where the user pressed space twice quickly, which LatinIME
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// resolved as period-space. In this state, pressing backspace will undo the
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// double-space-to-period insertion: it will replace ". " with " ".
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public static final int DOUBLE = 1;
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// Swap punctuation: the state where a weak space and a punctuation from the suggestion strip
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// have just been swapped. In this state, pressing backspace will undo the swap: the
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// characters will be swapped back back, and the space state will go to WEAK.
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public static final int SWAP_PUNCTUATION = 2;
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// Weak space: a space that should be swapped only by suggestion strip punctuation. Weak
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// spaces happen when the user presses space, accepting the current suggestion (whether
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// it's an auto-correction or not). In this state, pressing a punctuation from the suggestion
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// strip inserts it before the space (while it inserts it after the space in the NONE state).
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public static final int WEAK = 3;
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// Phantom space: a not-yet-inserted space that should get inserted on the next input,
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// character provided it's not a separator. If it's a separator, the phantom space is dropped.
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// Phantom spaces happen when a user chooses a word from the suggestion strip. In this state,
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// non-separators insert a space before they get inserted.
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public static final int PHANTOM = 4;
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private SpaceState() {
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// This class is not publicly instantiable.
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}
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}
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