content: /*
   * Copyright (C) 2012 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.amnesica.kryptey.inputmethod.latin;
  
  import android.inputmethodservice.InputMethodService;
  import android.os.SystemClock;
  import android.text.SpannableStringBuilder;
  import android.text.TextUtils;
  import android.text.style.CharacterStyle;
  import android.util.Log;
  import android.view.KeyEvent;
  import android.view.inputmethod.ExtractedText;
  import android.view.inputmethod.ExtractedTextRequest;
  import android.view.inputmethod.InputConnection;
  import android.widget.TextView;
  
  import com.amnesica.kryptey.inputmethod.latin.common.Constants;
  import com.amnesica.kryptey.inputmethod.latin.common.StringUtils;
  import com.amnesica.kryptey.inputmethod.latin.common.UnicodeSurrogate;
  import com.amnesica.kryptey.inputmethod.latin.settings.SpacingAndPunctuations;
  import com.amnesica.kryptey.inputmethod.latin.utils.CapsModeUtils;
  import com.amnesica.kryptey.inputmethod.latin.utils.DebugLogUtils;
  
  /**
   * Enrichment class for InputConnection to simplify interaction and add functionality.
   * <p>
   * This class serves as a wrapper to be able to simply add hooks to any calls to the underlying
   * InputConnection. It also keeps track of a number of things to avoid having to call upon IPC
   * all the time to find out what text is in the buffer, when we need it to determine caps mode
   * for example.
   */
  public final class RichInputConnection {
    private static final String TAG = "RichInputConnection";
    private static final boolean DBG = false;
    private static final boolean DEBUG_PREVIOUS_TEXT = false;
    private static final boolean DEBUG_BATCH_NESTING = false;
    private static final int INVALID_CURSOR_POSITION = -1;
  
    /**
     * The amount of time a {@link #reloadTextCache} call needs to take for the keyboard to enter
     */
    private static final long SLOW_INPUT_CONNECTION_ON_FULL_RELOAD_MS = 1000;
    /**
     * The amount of time a {@link #getTextBeforeCursor} call needs
     */
    private static final long SLOW_INPUT_CONNECTION_ON_PARTIAL_RELOAD_MS = 200;
  
    private static final int OPERATION_GET_TEXT_BEFORE_CURSOR = 0;
    private static final int OPERATION_GET_TEXT_AFTER_CURSOR = 1;
    private static final int OPERATION_RELOAD_TEXT_CACHE = 3;
    private static final String[] OPERATION_NAMES = new String[]{
        "GET_TEXT_BEFORE_CURSOR",
        "GET_TEXT_AFTER_CURSOR",
        "GET_WORD_RANGE_AT_CURSOR",
        "RELOAD_TEXT_CACHE"};
  
    /**
     * This variable contains an expected value for the selection start position. This is where the
     * cursor or selection start may end up after all the keyboard-triggered updates have passed. We
     * keep this to compare it to the actual selection start to guess whether the move was caused by
     * a keyboard command or not.
     * It's not really the selection start position: the selection start may not be there yet, and
     * in some cases, it may never arrive there.
     */
    private int mExpectedSelStart = INVALID_CURSOR_POSITION; // in chars, not code points
    /**
     * The expected selection end.  Only differs from mExpectedSelStart if a non-empty selection is
     * expected.  The same caveats as mExpectedSelStart apply.
     */
    private int mExpectedSelEnd = INVALID_CURSOR_POSITION; // in chars, not code points
    /**
     * This contains the committed text immediately preceding the cursor and the composing
     * text, if any. It is refreshed when the cursor moves by calling upon the TextView.
     */
    private final StringBuilder mCommittedTextBeforeComposingText = new StringBuilder();
    /**
     * This contains the currently composing text, as LatinIME thinks the TextView is seeing it.
     */
    private final StringBuilder mComposingText = new StringBuilder();
  
    /**
     * This variable is a temporary object used in { #commitText(CharSequence, int)}
     * to avoid object creation.
     */
    private final SpannableStringBuilder mTempObjectForCommitText = new SpannableStringBuilder();
  
    private final InputMethodService mParent;
    private InputConnection mIC;
    private E2EEInputConnection mOtherIC;
    private int mNestLevel;
  
    private boolean shouldUseOtherIC;
  
    public RichInputConnection(final InputMethodService parent) {
      mParent = parent;
      mIC = null;
      mNestLevel = 0;
    }
  
    public boolean isConnected() {
      return getIC() != null;
    }
  
    private void checkConsistencyForDebug() {
      final ExtractedTextRequest r = new ExtractedTextRequest();
      r.hintMaxChars = 0;
      r.hintMaxLines = 0;
      r.token = 1;
      r.flags = 0;
      final ExtractedText et = getIC().getExtractedText(r, 0);
      final CharSequence beforeCursor = getTextBeforeCursor(Constants.EDITOR_CONTENTS_CACHE_SIZE,
          0);
      final StringBuilder internal = new StringBuilder(mCommittedTextBeforeComposingText)
          .append(mComposingText);
      if (null == et || null == beforeCursor) return;
      final int actualLength = Math.min(beforeCursor.length(), internal.length());
      if (internal.length() > actualLength) {
        internal.delete(0, internal.length() - actualLength);
      }
      final String reference = (beforeCursor.length() <= actualLength) ? beforeCursor.toString()
          : beforeCursor.subSequence(beforeCursor.length() - actualLength,
          beforeCursor.length()).toString();
      if (et.selectionStart != mExpectedSelStart
          || !(reference.equals(internal.toString()))) {
        final String context = "Expected selection start = " + mExpectedSelStart
            + "\nActual selection start = " + et.selectionStart
            + "\nExpected text = " + internal.length() + " " + internal
            + "\nActual text = " + reference.length() + " " + reference;
        ((LatinIME) mParent).debugDumpStateAndCrashWithException(context);
      } else {
        Log.e(TAG, DebugLogUtils.getStackTrace(2));
        Log.e(TAG, "Exp <> Actual : " + mExpectedSelStart + " <> " + et.selectionStart);
      }
    }
  
    public void beginBatchEdit() {
      if (++mNestLevel == 1) {
        if (isConnected()) {
          getIC().beginBatchEdit();
        }
      } else {
        if (DBG) {
          throw new RuntimeException("Nest level too deep");
        }
        Log.e(TAG, "Nest level too deep : " + mNestLevel);
      }
      if (DEBUG_BATCH_NESTING) checkBatchEdit();
      if (DEBUG_PREVIOUS_TEXT) checkConsistencyForDebug();
    }
  
    public void endBatchEdit() {
      if (mNestLevel <= 0) Log.e(TAG, "Batch edit not in progress!"); // TODO: exception instead
      if (--mNestLevel == 0 && isConnected()) {
        getIC().endBatchEdit();
      }
      if (DEBUG_PREVIOUS_TEXT) checkConsistencyForDebug();
    }
  
    /**
     * Reset the cached text and retrieve it again from the editor.
     * <p>
     * This should be called when the cursor moved. It's possible that we can't connect to
     * the application when doing this; notably, this happens sometimes during rotation, probably
     * because of a race condition in the framework. In this case, we just can't retrieve the
     * data, so we empty the cache and note that we don't know the new cursor position, and we
     * return false so that the caller knows about this and can retry later.
     *
     * @param newSelStart the new position of the selection start, as received from the system.
     * @param newSelEnd   the new position of the selection end, as received from the system.
     * @return true if we were able to connect to the editor successfully, false otherwise. When
     * this method returns false, the caches could not be correctly refreshed so they were only
     * reset: the caller should try again later to return to normal operation.
     */
    public boolean resetCachesUponCursorMoveAndReturnSuccess(final int newSelStart,
                                                             final int newSelEnd) {
      mExpectedSelStart = newSelStart;
      mExpectedSelEnd = newSelEnd;
      mComposingText.setLength(0);
      final boolean didReloadTextSuccessfully = reloadTextCache();
      if (!didReloadTextSuccessfully) {
        Log.d(TAG, "Will try to retrieve text later.");
        return false;
      }
      return true;
    }
  
    /**
     * Reload the cached text from the InputConnection.
     *
     * @return true if successful
     */
    private boolean reloadTextCache() {
      mCommittedTextBeforeComposingText.setLength(0);
      // Call upon the inputconnection directly since our own method is using the cache, and
      // we want to refresh it.
      final CharSequence textBeforeCursor = getTextBeforeCursorAndDetectLaggyConnection(
          OPERATION_RELOAD_TEXT_CACHE,
          SLOW_INPUT_CONNECTION_ON_FULL_RELOAD_MS,
          Constants.EDITOR_CONTENTS_CACHE_SIZE,
          0 /* flags */);
      if (null == textBeforeCursor) {
        // For some reason the app thinks we are not connected to it. This looks like a
        // framework bug... Fall back to ground state and return false.
        mExpectedSelStart = INVALID_CURSOR_POSITION;
        mExpectedSelEnd = INVALID_CURSOR_POSITION;
        Log.e(TAG, "Unable to connect to the editor to retrieve text.");
        return false;
      }
      mCommittedTextBeforeComposingText.append(textBeforeCursor);
      return true;
    }
  
    private void checkBatchEdit() {
      if (mNestLevel != 1) {
        // TODO: exception instead
        Log.e(TAG, "Batch edit level incorrect : " + mNestLevel);
        Log.e(TAG, DebugLogUtils.getStackTrace(4));
      }
    }
  
    public void finishComposingText() {
      if (DEBUG_BATCH_NESTING) checkBatchEdit();
      if (DEBUG_PREVIOUS_TEXT) checkConsistencyForDebug();
      // TODO: this is not correct! The cursor is not necessarily after the composing text.
      // In the practice right now this is only called when input ends so it will be reset so
      // it works, but it's wrong and should be fixed.
      mCommittedTextBeforeComposingText.append(mComposingText);
      mComposingText.setLength(0);
      if (isConnected()) {
        getIC().finishComposingText();
      }
    }
  
    /**
     * Calls {@link InputConnection#commitText(CharSequence, int)}.
     *
     * @param text              The text to commit. This may include styles.
     * @param newCursorPosition The new cursor position around the text.
     */
    public void commitText(final CharSequence text, final int newCursorPosition) {
      RichInputMethodManager.getInstance().resetSubtypeCycleOrder();
      if (DEBUG_BATCH_NESTING) checkBatchEdit();
      if (DEBUG_PREVIOUS_TEXT) checkConsistencyForDebug();
      mCommittedTextBeforeComposingText.append(text);
      // TODO: the following is exceedingly error-prone. Right now when the cursor is in the
      // middle of the composing word mComposingText only holds the part of the composing text
      // that is before the cursor, so this actually works, but it's terribly confusing. Fix this.
      if (hasCursorPosition()) {
        mExpectedSelStart += text.length() - mComposingText.length();
        mExpectedSelEnd = mExpectedSelStart;
      }
      mComposingText.setLength(0);
      if (isConnected()) {
        mTempObjectForCommitText.clear();
        mTempObjectForCommitText.append(text);
        final CharacterStyle[] spans = mTempObjectForCommitText.getSpans(
            0, text.length(), CharacterStyle.class);
        for (final CharacterStyle span : spans) {
          final int spanStart = mTempObjectForCommitText.getSpanStart(span);
          final int spanEnd = mTempObjectForCommitText.getSpanEnd(span);
          final int spanFlags = mTempObjectForCommitText.getSpanFlags(span);
          // We have to adjust the end of the span to include an additional character.
          // This is to avoid splitting a unicode surrogate pair.
          // See com.amnesica.kryptey.inputmethod.latin.common.Constants.UnicodeSurrogate
          // See https://b.corp.google.com/issues/19255233
          if (0 < spanEnd && spanEnd < mTempObjectForCommitText.length()) {
            final char spanEndChar = mTempObjectForCommitText.charAt(spanEnd - 1);
            final char nextChar = mTempObjectForCommitText.charAt(spanEnd);
            if (UnicodeSurrogate.isLowSurrogate(spanEndChar)
                && UnicodeSurrogate.isHighSurrogate(nextChar)) {
              mTempObjectForCommitText.setSpan(span, spanStart, spanEnd + 1, spanFlags);
            }
          }
        }
        getIC().commitText(mTempObjectForCommitText, newCursorPosition);
      }
    }
  
    public CharSequence getSelectedText(final int flags) {
      return isConnected() ? getIC().getSelectedText(flags) : null;
    }
  
    public boolean canDeleteCharacters() {
      return mExpectedSelStart > 0;
    }
  
    /**
     * Gets the caps modes we should be in after this specific string.
     * <p>
     * This returns a bit set of TextUtils#CAP_MODE_*, masked by the inputType argument.
     * This method also supports faking an additional space after the string passed in argument,
     * to support cases where a space will be added automatically, like in phantom space
     * state for example.
     * Note that for English, we are using American typography rules (which are not specific to
     * American English, it's just the most common set of rules for English).
     *
     * @param inputType              a mask of the caps modes to test for.
     * @param spacingAndPunctuations the values of the settings to use for locale and separators.
     * @return the caps modes that should be on as a set of bits
     */
    public int getCursorCapsMode(final int inputType, final SpacingAndPunctuations spacingAndPunctuations) {
      if (!isConnected()) {
        return Constants.TextUtils.CAP_MODE_OFF;
      }
      if (!TextUtils.isEmpty(mComposingText)) {
        // We have some composing text - we should be in MODE_CHARACTERS only.
        return TextUtils.CAP_MODE_CHARACTERS & inputType;
      }
      // TODO: this will generally work, but there may be cases where the buffer contains SOME
      // information but not enough to determine the caps mode accurately. This may happen after
      // heavy pressing of delete, for example DEFAULT_TEXT_CACHE_SIZE - 5 times or so.
      // getCapsMode should be updated to be able to return a "not enough info" result so that
      // we can get more context only when needed.
      if (TextUtils.isEmpty(mCommittedTextBeforeComposingText) && 0 != mExpectedSelStart) {
        if (!reloadTextCache()) {
          Log.w(TAG, "Unable to connect to the editor. "
              + "Setting caps mode without knowing text.");
        }
      }
      // This never calls InputConnection#getCapsMode - in fact, it's a static method that
      // never blocks or initiates IPC.
      // TODO: don't call #toString() here. Instead, all accesses to
      // mCommittedTextBeforeComposingText should be done on the main thread.
      return CapsModeUtils.getCapsMode(mCommittedTextBeforeComposingText.toString(), inputType,
          spacingAndPunctuations);
    }
  
    public int getCodePointBeforeCursor() {
      final int length = mCommittedTextBeforeComposingText.length();
      if (length < 1) return Constants.NOT_A_CODE;
      return Character.codePointBefore(mCommittedTextBeforeComposingText, length);
    }
  
    public CharSequence getTextBeforeCursor(final int n, final int flags) {
      final int cachedLength =
          mCommittedTextBeforeComposingText.length() + mComposingText.length();
      // If we have enough characters to satisfy the request, or if we have all characters in
      // the text field, then we can return the cached version right away.
      // However, if we don't have an expected cursor position, then we should always
      // go fetch the cache again (as it happens, INVALID_CURSOR_POSITION < 0, so we need to
      // test for this explicitly)
      if (INVALID_CURSOR_POSITION != mExpectedSelStart
          && (cachedLength >= n || cachedLength >= mExpectedSelStart)) {
        final StringBuilder s = new StringBuilder(mCommittedTextBeforeComposingText);
        // We call #toString() here to create a temporary object.
        // In some situations, this method is called on a worker thread, and it's possible
        // the main thread touches the contents of mComposingText while this worker thread
        // is suspended, because mComposingText is a StringBuilder. This may lead to crashes,
        // so we call #toString() on it. That will result in the return value being strictly
        // speaking wrong, but since this is used for basing bigram probability off, and
        // it's only going to matter for one getSuggestions call, it's fine in the practice.
        s.append(mComposingText);
        if (s.length() > n) {
          s.delete(0, s.length() - n);
        }
        return s;
      }
      return getTextBeforeCursorAndDetectLaggyConnection(
          OPERATION_GET_TEXT_BEFORE_CURSOR,
          SLOW_INPUT_CONNECTION_ON_PARTIAL_RELOAD_MS,
          n, flags);
    }
  
    public CharSequence getTextAfterCursor(final int n, final int flags) {
      return getTextAfterCursorAndDetectLaggyConnection(
          OPERATION_GET_TEXT_AFTER_CURSOR,
          SLOW_INPUT_CONNECTION_ON_PARTIAL_RELOAD_MS,
          n, flags);
    }
  
    private CharSequence getTextBeforeCursorAndDetectLaggyConnection(
        final int operation, final long timeout, final int n, final int flags) {
      if (!isConnected()) {
        return null;
      }
      final long startTime = SystemClock.uptimeMillis();
      final CharSequence result = getIC().getTextBeforeCursor(n, flags);
      detectLaggyConnection(operation, timeout, startTime);
      return result;
    }
  
    private CharSequence getTextAfterCursorAndDetectLaggyConnection(
        final int operation, final long timeout, final int n, final int flags) {
      if (!isConnected()) {
        return null;
      }
      final long startTime = SystemClock.uptimeMillis();
      final CharSequence result = getIC().getTextAfterCursor(n, flags);
      detectLaggyConnection(operation, timeout, startTime);
      return result;
    }
  
    private void detectLaggyConnection(final int operation, final long timeout, final long startTime) {
      final long duration = SystemClock.uptimeMillis() - startTime;
      if (duration >= timeout) {
        final String operationName = OPERATION_NAMES[operation];
        Log.w(TAG, "Slow InputConnection: " + operationName + " took " + duration + " ms.");
      }
    }
  
    public void deleteTextBeforeCursor(final int beforeLength) {
      if (DEBUG_BATCH_NESTING) checkBatchEdit();
      // TODO: the following is incorrect if the cursor is not immediately after the composition.
      // Right now we never come here in this case because we reset the composing state before we
      // come here in this case, but we need to fix this.
      final int remainingChars = mComposingText.length() - beforeLength;
      if (remainingChars >= 0) {
        mComposingText.setLength(remainingChars);
      } else {
        mComposingText.setLength(0);
        // Never cut under 0
        final int len = Math.max(mCommittedTextBeforeComposingText.length()
            + remainingChars, 0);
        mCommittedTextBeforeComposingText.setLength(len);
      }
      if (mExpectedSelStart > beforeLength) {
        mExpectedSelStart -= beforeLength;
        mExpectedSelEnd -= beforeLength;
      } else {
        // There are fewer characters before the cursor in the buffer than we are being asked to
        // delete. Only delete what is there, and update the end with the amount deleted.
        mExpectedSelEnd -= mExpectedSelStart;
        mExpectedSelStart = 0;
      }
      if (isConnected()) {
        getIC().deleteSurroundingText(beforeLength, 0);
      }
      if (DEBUG_PREVIOUS_TEXT) checkConsistencyForDebug();
    }
  
    public void performEditorAction(final int actionId) {
      if (isConnected()) {
        getIC().performEditorAction(actionId);
      }
    }
  
    public void sendKeyEvent(final KeyEvent keyEvent) {
      if (DEBUG_BATCH_NESTING) checkBatchEdit();
      if (keyEvent.getAction() == KeyEvent.ACTION_DOWN) {
        if (DEBUG_PREVIOUS_TEXT) checkConsistencyForDebug();
        // This method is only called for enter or backspace when speaking to old applications
        // (target SDK <= 15 (Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1)), or for digits.
        // When talking to new applications we never use this method because it's inherently
        // racy and has unpredictable results, but for backward compatibility we continue
        // sending the key events for only Enter and Backspace because some applications
        // mistakenly catch them to do some stuff.
        switch (keyEvent.getKeyCode()) {
          case KeyEvent.KEYCODE_ENTER:
            mCommittedTextBeforeComposingText.append("\n");
            if (hasCursorPosition()) {
              mExpectedSelStart += 1;
              mExpectedSelEnd = mExpectedSelStart;
            }
            break;
          case KeyEvent.KEYCODE_DEL:
            if (0 == mComposingText.length()) {
              if (mCommittedTextBeforeComposingText.length() > 0) {
                mCommittedTextBeforeComposingText.delete(
                    mCommittedTextBeforeComposingText.length() - 1,
                    mCommittedTextBeforeComposingText.length());
              }
            } else {
              mComposingText.delete(mComposingText.length() - 1, mComposingText.length());
            }
  
            if (mExpectedSelStart > 0 && mExpectedSelStart == mExpectedSelEnd) {
              // TODO: Handle surrogate pairs.
              mExpectedSelStart -= 1;
            }
            mExpectedSelEnd = mExpectedSelStart;
            break;
          case KeyEvent.KEYCODE_UNKNOWN:
            if (null != keyEvent.getCharacters()) {
              mCommittedTextBeforeComposingText.append(keyEvent.getCharacters());
              if (hasCursorPosition()) {
                mExpectedSelStart += keyEvent.getCharacters().length();
                mExpectedSelEnd = mExpectedSelStart;
              }
            }
            break;
          default:
            final String text = StringUtils.newSingleCodePointString(keyEvent.getUnicodeChar());
            mCommittedTextBeforeComposingText.append(text);
            if (hasCursorPosition()) {
              mExpectedSelStart += text.length();
              mExpectedSelEnd = mExpectedSelStart;
            }
            break;
        }
      }
      if (isConnected()) {
        getIC().sendKeyEvent(keyEvent);
      }
    }
  
    /**
     * Set the selection of the text editor.
     * <p>
     * Calls through to {@link InputConnection#setSelection(int, int)}.
     *
     * @param start the character index where the selection should start.
     * @param end   the character index where the selection should end.
     * @return Returns true on success, false on failure: either the input connection is no longer
     * valid when setting the selection or when retrieving the text cache at that point, or
     * invalid arguments were passed.
     */
    public void setSelection(int start, int end) {
      if (DEBUG_BATCH_NESTING) checkBatchEdit();
      if (DEBUG_PREVIOUS_TEXT) checkConsistencyForDebug();
      if (start < 0 || end < 0) {
        return;
      }
      if (mExpectedSelStart == start && mExpectedSelEnd == end) {
        return;
      }
  
      mExpectedSelStart = start;
      mExpectedSelEnd = end;
      if (isConnected()) {
        final boolean isIcValid = getIC().setSelection(start, end);
        if (!isIcValid) {
          return;
        }
      }
      reloadTextCache();
    }
  
    public int getExpectedSelectionStart() {
      return mExpectedSelStart;
    }
  
    public int getExpectedSelectionEnd() {
      return mExpectedSelEnd;
    }
  
    /**
     * @return whether there is a selection currently active.
     */
    public boolean hasSelection() {
      return mExpectedSelEnd != mExpectedSelStart;
    }
  
    public boolean hasCursorPosition() {
      return mExpectedSelStart != INVALID_CURSOR_POSITION && mExpectedSelEnd != INVALID_CURSOR_POSITION;
    }
  
    /**
     * Some chars, such as emoji consist of 2 chars (surrogate pairs). We should treat them as one character.
     */
    public int getUnicodeSteps(int chars, boolean rightSidePointer) {
      int steps = 0;
      if (chars < 0) {
        CharSequence charsBeforeCursor = rightSidePointer && hasSelection() ?
            getSelectedText(0) :
            getTextBeforeCursor(-chars * 2, 0);
        if (charsBeforeCursor != null) {
          for (int i = charsBeforeCursor.length() - 1; i >= 0 && chars < 0; i--, chars++, steps--) {
            if (Character.isSurrogate(charsBeforeCursor.charAt(i))) {
              steps--;
              i--;
            }
          }
        }
      } else if (chars > 0) {
        CharSequence charsAfterCursor = !rightSidePointer && hasSelection() ?
            getSelectedText(0) :
            getTextAfterCursor(chars * 2, 0);
        if (charsAfterCursor != null) {
          for (int i = 0; i < charsAfterCursor.length() && chars > 0; i++, chars--, steps++) {
            if (Character.isSurrogate(charsAfterCursor.charAt(i))) {
              steps++;
              i++;
            }
          }
        }
      }
      return steps;
    }
  
    // TODO
    private InputConnection getIC() {
      if (!shouldUseOtherIC) mIC = mParent.getCurrentInputConnection();
      return shouldUseOtherIC ? mOtherIC : mIC;
    }
  
    // TODO
    public void setShouldUseOtherIC(boolean shouldUseOtherIC) {
      this.shouldUseOtherIC = shouldUseOtherIC;
    }
  
    // TODO
    public void setOtherIC(TextView textView) {
      if (textView == null) return;
      mOtherIC = new E2EEInputConnection(textView);
    }
  }
  