/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.sugree.inputmethod.latin;
import com.android.inputmethod.keyboard.Keyboard;
import com.sugree.inputmethod.latin.Utils.RingCharBuffer;
import android.util.Log;
public class TextEntryState {
private static final String TAG = TextEntryState.class.getSimpleName();
private static final boolean DEBUG = false;
private static final int UNKNOWN = 0;
private static final int START = 1;
private static final int IN_WORD = 2;
private static final int ACCEPTED_DEFAULT = 3;
private static final int PICKED_SUGGESTION = 4;
private static final int PUNCTUATION_AFTER_WORD = 5;
private static final int PUNCTUATION_AFTER_ACCEPTED = 6;
private static final int SPACE_AFTER_ACCEPTED = 7;
private static final int SPACE_AFTER_PICKED = 8;
private static final int UNDO_COMMIT = 9;
private static final int RECORRECTING = 10;
private static final int PICKED_RECORRECTION = 11;
private static int sState = UNKNOWN;
private static int sPreviousState = UNKNOWN;
private static void setState(final int newState) {
sPreviousState = sState;
sState = newState;
}
public static void acceptedDefault(CharSequence typedWord, CharSequence actualWord,
int separatorCode) {
if (typedWord == null) return;
setState(ACCEPTED_DEFAULT);
LatinImeLogger.logOnAutoCorrection(
typedWord.toString(), actualWord.toString(), separatorCode);
if (DEBUG)
displayState("acceptedDefault", "typedWord", typedWord, "actualWord", actualWord);
}
// State.ACCEPTED_DEFAULT will be changed to other sub-states
// (see "case ACCEPTED_DEFAULT" in typedCharacter() below),
// and should be restored back to State.ACCEPTED_DEFAULT after processing for each sub-state.
public static void backToAcceptedDefault(CharSequence typedWord) {
if (typedWord == null) return;
switch (sState) {
case SPACE_AFTER_ACCEPTED:
case PUNCTUATION_AFTER_ACCEPTED:
case IN_WORD:
setState(ACCEPTED_DEFAULT);
break;
default:
break;
}
if (DEBUG) displayState("backToAcceptedDefault", "typedWord", typedWord);
}
public static void acceptedTyped(CharSequence typedWord) {
setState(PICKED_SUGGESTION);
if (DEBUG) displayState("acceptedTyped", "typedWord", typedWord);
}
public static void acceptedSuggestion(CharSequence typedWord, CharSequence actualWord) {
if (sState == RECORRECTING || sState == PICKED_RECORRECTION) {
setState(PICKED_RECORRECTION);
} else {
setState(PICKED_SUGGESTION);
}
if (DEBUG)
displayState("acceptedSuggestion", "typedWord", typedWord, "actualWord", actualWord);
}
public static void selectedForRecorrection() {
setState(RECORRECTING);
if (DEBUG) displayState("selectedForRecorrection");
}
public static void onAbortRecorrection() {
if (sState == RECORRECTING || sState == PICKED_RECORRECTION) {
setState(START);
}
if (DEBUG) displayState("onAbortRecorrection");
}
public static void typedCharacter(char c, boolean isSeparator, int x, int y) {
final boolean isSpace = (c == Keyboard.CODE_SPACE);
switch (sState) {
case IN_WORD:
if (isSpace || isSeparator) {
setState(START);
} else {
// State hasn't changed.
}
break;
case ACCEPTED_DEFAULT:
case SPACE_AFTER_PICKED:
case PUNCTUATION_AFTER_ACCEPTED:
if (isSpace) {
setState(SPACE_AFTER_ACCEPTED);
} else if (isSeparator) {
// Swap
setState(PUNCTUATION_AFTER_ACCEPTED);
} else {
setState(IN_WORD);
}
break;
case PICKED_SUGGESTION:
case PICKED_RECORRECTION:
if (isSpace) {
setState(SPACE_AFTER_PICKED);
} else if (isSeparator) {
// Swap
setState(PUNCTUATION_AFTER_ACCEPTED);
} else {
setState(IN_WORD);
}
break;
case START:
case UNKNOWN:
case SPACE_AFTER_ACCEPTED:
case PUNCTUATION_AFTER_WORD:
if (!isSpace && !isSeparator) {
setState(IN_WORD);
} else {
setState(START);
}
break;
case UNDO_COMMIT:
if (isSpace || isSeparator) {
setState(START);
} else {
setState(IN_WORD);
}
break;
case RECORRECTING:
setState(START);
break;
}
RingCharBuffer.getInstance().push(c, x, y);
if (isSeparator) {
LatinImeLogger.logOnInputSeparator();
} else {
LatinImeLogger.logOnInputChar();
}
if (DEBUG) displayState("typedCharacter", "char", c, "isSeparator", isSeparator);
}
public static void backspace() {
if (sState == ACCEPTED_DEFAULT) {
setState(UNDO_COMMIT);
LatinImeLogger.logOnAutoCorrectionCancelled();
} else if (sState == UNDO_COMMIT) {
setState(IN_WORD);
}
if (DEBUG) displayState("backspace");
}
public static void reset() {
setState(START);
if (DEBUG) displayState("reset");
}
public static boolean isAcceptedDefault() {
return sState == ACCEPTED_DEFAULT;
}
public static boolean isSpaceAfterPicked() {
return sState == SPACE_AFTER_PICKED;
}
public static boolean isUndoCommit() {
return sState == UNDO_COMMIT;
}
public static boolean isPunctuationAfterAccepted() {
return sState == PUNCTUATION_AFTER_ACCEPTED;
}
public static boolean isRecorrecting() {
return sState == RECORRECTING || sState == PICKED_RECORRECTION;
}
public static String getState() {
return stateName(sState);
}
private static String stateName(int state) {
switch (state) {
case START: return "START";
case IN_WORD: return "IN_WORD";
case ACCEPTED_DEFAULT: return "ACCEPTED_DEFAULT";
case PICKED_SUGGESTION: return "PICKED_SUGGESTION";
case PUNCTUATION_AFTER_WORD: return "PUNCTUATION_AFTER_WORD";
case PUNCTUATION_AFTER_ACCEPTED: return "PUNCTUATION_AFTER_ACCEPTED";
case SPACE_AFTER_ACCEPTED: return "SPACE_AFTER_ACCEPTED";
case SPACE_AFTER_PICKED: return "SPACE_AFTER_PICKED";
case UNDO_COMMIT: return "UNDO_COMMIT";
case RECORRECTING: return "RECORRECTING";
case PICKED_RECORRECTION: return "PICKED_RECORRECTION";
default: return "UNKNOWN";
}
}
private static void displayState(String title, Object ... args) {
final StringBuilder sb = new StringBuilder(title);
sb.append(':');
for (int i = 0; i < args.length; i += 2) {
sb.append(' ');
sb.append(args[i]);
sb.append('=');
sb.append(args[i+1].toString());
}
sb.append(" state=");
sb.append(stateName(sState));
sb.append(" previous=");
sb.append(stateName(sPreviousState));
Log.d(TAG, sb.toString());
}
}