Implement ThreadedInputConnection.deleteSurroundingTextInCodePoints()

content/public/android/java/src/org/chromium/content/browser/input/ImeAdapter.java

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.content.browser.input;
 
 import android.content.res.Configuration;
 import android.os.Build;
 import android.os.ResultReceiver;
 import android.os.SystemClock;
@@ skipping 613 matching lines @@
         if (mNativeImeAdapterAndroid == 0) return false;
         nativeSendKeyEvent(mNativeImeAdapterAndroid, null, WebInputEventType.RawKeyDown, 0,
                 SystemClock.uptimeMillis(), COMPOSITION_KEY_CODE, 0, false, 0);
         nativeDeleteSurroundingText(mNativeImeAdapterAndroid, beforeLength, afterLength);
         nativeSendKeyEvent(mNativeImeAdapterAndroid, null, WebInputEventType.KeyUp, 0,
                 SystemClock.uptimeMillis(), COMPOSITION_KEY_CODE, 0, false, 0);
         return true;
     }
 
     /**
+     * Send a request to the native counterpart to delete a given range of characters.
+     * @param beforeLength Number of code points to extend the selection by before the existing
+     *                     selection.
+     * @param afterLength Number of code points to extend the selection by after the existing
+     *                    selection.
+     * @return Whether the native counterpart of ImeAdapter received the call.
+     */
+    boolean deleteSurroundingTextInCodePoints(int beforeLength, int afterLength) {
+        mViewEmbedder.onImeEvent();
+        if (mNativeImeAdapterAndroid == 0) return false;
+        nativeSendKeyEvent(mNativeImeAdapterAndroid, null, WebInputEventType.RawKeyDown, 0,
+                SystemClock.uptimeMillis(), COMPOSITION_KEY_CODE, 0, false, 0);
+        nativeDeleteSurroundingTextInCodePoints(
+                mNativeImeAdapterAndroid, beforeLength, afterLength);
+        nativeSendKeyEvent(mNativeImeAdapterAndroid, null, WebInputEventType.KeyUp, 0,
+                SystemClock.uptimeMillis(), COMPOSITION_KEY_CODE, 0, false, 0);
+        return true;
+    }
+
+    /**
      * Send a request to the native counterpart to set the selection to given range.
      * @param start Selection start index.
      * @param end Selection end index.
      * @return Whether the native counterpart of ImeAdapter received the call.
      */
     boolean setEditableSelectionOffsets(int start, int end) {
         if (mNativeImeAdapterAndroid == 0) return false;
         nativeSetEditableSelectionOffsets(mNativeImeAdapterAndroid, start, end);
         return true;
     }
@@ skipping 130 matching lines @@
             String textStr, int newCursorPosition);
     private native void nativeCommitText(
             long nativeImeAdapterAndroid, CharSequence text, String textStr, int newCursorPosition);
     private native void nativeFinishComposingText(long nativeImeAdapterAndroid);
     private native void nativeAttachImeAdapter(long nativeImeAdapterAndroid);
     private native void nativeSetEditableSelectionOffsets(long nativeImeAdapterAndroid,
             int start, int end);
     private native void nativeSetComposingRegion(long nativeImeAdapterAndroid, int start, int end);
     private native void nativeDeleteSurroundingText(long nativeImeAdapterAndroid,
             int before, int after);
+    private native void nativeDeleteSurroundingTextInCodePoints(
+            long nativeImeAdapterAndroid, int before, int after);
     private native void nativeResetImeAdapter(long nativeImeAdapterAndroid);
     private native boolean nativeRequestTextInputStateUpdate(long nativeImeAdapterAndroid);
     private native void nativeRequestCursorUpdate(long nativeImeAdapterAndroid,
             boolean immediateRequest, boolean monitorRequest);
 }