Support InputMethodManager#updateCursorAnchorInfo for Android 5.0 (C++ version)

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.Handler;
 import android.os.ResultReceiver;
 import android.os.SystemClock;
 import android.text.Editable;
 import android.text.SpannableString;
 import android.text.style.BackgroundColorSpan;
 import android.text.style.CharacterStyle;
 import android.text.style.UnderlineSpan;
 import android.view.KeyCharacterMap;
 import android.view.KeyEvent;
 import android.view.View;
+import android.view.inputmethod.CursorAnchorInfo;
 import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputConnection;
+import android.view.inputmethod.InputMethodManager;
 
 import org.chromium.base.CalledByNative;
 import org.chromium.base.JNINamespace;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.blink_public.web.WebInputEventModifier;
 import org.chromium.blink_public.web.WebInputEventType;
 import org.chromium.blink_public.web.WebTextInputFlags;
 import org.chromium.ui.base.ime.TextInputType;
 import org.chromium.ui.picker.InputDialogContainer;
 
@@ skipping 529 matching lines @@
      * @return Whether the native counterpart of ImeAdapter received the call.
      */
     boolean setComposingRegion(CharSequence text, int start, int end) {
         if (mNativeImeAdapterAndroid == 0) return false;
         nativeSetComposingRegion(mNativeImeAdapterAndroid, start, end);
         mLastComposeText = text != null ? text.toString() : null;
         return true;
     }
 
     /**
+     * Send a request to the native counterpart to call back
+     * {@link InputMethodManager#updateCursorAnchorInfo(View, CursorAnchorInfo)} when necessary.
+     * @param cursorUpdateMode The flag passed to {@link InputConnection#requestCursorUpdates(int)}.
+     * @return Whether the native counterpart of ImeAdapter received the call.
+     */
+    boolean requestCursorUpdates(int cursorUpdateMode) {
+        if (mNativeImeAdapterAndroid == 0) return false;
+        return nativeRequestCursorUpdates(mNativeImeAdapterAndroid, cursorUpdateMode);
+    }
+
+    /**
      * Send a request to the native counterpart to unselect text.
      * @return Whether the native counterpart of ImeAdapter received the call.
      */
     public boolean unselect() {
         if (mNativeImeAdapterAndroid == 0) return false;
         nativeUnselect(mNativeImeAdapterAndroid);
         return true;
     }
 
     /**
@@ skipping 37 matching lines @@
     }
 
     // Calls from C++ to Java
 
     @CalledByNative
     private void focusedNodeChanged(boolean isEditable) {
         if (mInputConnection != null && isEditable) mInputConnection.restartInput();
     }
 
     @CalledByNative
+    private void updateCursorAnchorInfo(Object cursorAnchorInfo) {
+        if (cursorAnchorInfo instanceof CursorAnchorInfo) {
+            mInputMethodManagerWrapper.updateCursorAnchorInfo(mViewEmbedder.getAttachedView(),
+                    (CursorAnchorInfo) cursorAnchorInfo);
+        }
+    }
+
+    @CalledByNative
     private void populateUnderlinesFromSpans(CharSequence text, long underlines) {
         if (!(text instanceof SpannableString)) return;
 
         SpannableString spannableString = ((SpannableString) text);
         CharacterStyle spans[] =
                 spannableString.getSpans(0, text.length(), CharacterStyle.class);
         for (CharacterStyle span : spans) {
             if (span instanceof BackgroundColorSpan) {
                 nativeAppendBackgroundColorSpan(underlines, spannableString.getSpanStart(span),
                         spannableString.getSpanEnd(span),
@@ skipping 43 matching lines @@
     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 boolean nativeRequestCursorUpdates(long nativeImeAdapterAndroid,
+            int cursorUpdateMode);
+
     private native void nativeUnselect(long nativeImeAdapterAndroid);
     private native void nativeSelectAll(long nativeImeAdapterAndroid);
     private native void nativeCut(long nativeImeAdapterAndroid);
     private native void nativeCopy(long nativeImeAdapterAndroid);
     private native void nativePaste(long nativeImeAdapterAndroid);
     private native void nativeResetImeAdapter(long nativeImeAdapterAndroid);
 }