Show IME when DPAD_CENTER is pressed

content/public/android/java/src/org/chromium/content/browser/ContentViewCore.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;
 
 import android.app.Activity;
 import android.app.SearchManager;
 import android.content.ContentResolver;
 import android.content.Context;
@@ skipping 556 matching lines @@
             }
 
             @Override
             public void releaseAnchorView(View anchorView) {
                 mContainerView.removeView(anchorView);
             }
         };
     }
 
     @VisibleForTesting
+    public void setImeAdapterForTest(ImeAdapter imeAdapter) {
+        mImeAdapter = imeAdapter;
+    }
+
+    @VisibleForTesting
     public ImeAdapter getImeAdapterForTest() {
         return mImeAdapter;
     }
 
     @VisibleForTesting
     public void setAdapterInputConnectionFactory(AdapterInputConnectionFactory factory) {
         mAdapterInputConnectionFactory = factory;
     }
 
     @VisibleForTesting
@@ skipping 1231 matching lines @@
     }
 
     /**
      * @see View#dispatchKeyEvent(KeyEvent)
      */
     public boolean dispatchKeyEvent(KeyEvent event) {
         if (getContentViewClient().shouldOverrideKeyEvent(event)) {
             return mContainerViewInternals.super_dispatchKeyEvent(event);
         }
 
+        if (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_CENTER) {
+            showImeIfNeeded();
+            // Event is not consumed here, because ImeAdapter might interpret
+            // it as "Enter".
+            // showImeIfNeeded respects the policy of
+            // InputMethodService.onEvaluateInputViewShown. So IME will not be
+            // shown if you have QWERTY physical keyboard attached.
+            // Also, IME will not be shown if the focus is not on the input
+            // field. See ImeAdapter.attachAndShowIfNeeded
+        }
+
         if (mImeAdapter.dispatchKeyEvent(event)) return true;
 
         return mContainerViewInternals.super_dispatchKeyEvent(event);
     }
 
     /**
      * @see View#onHoverEvent(MotionEvent)
      * Mouse move events are sent on hover enter, hover move and hover exit.
      * They are sent on hover exit because sometimes it acts as both a hover
      * move and hover exit.
@@ skipping 1622 matching lines @@
 
     private native void nativeSendSingleTapUma(long nativeContentViewCoreImpl,
             int type, int count);
 
     private native void nativeSendActionAfterDoubleTapUma(long nativeContentViewCoreImpl,
             int type, boolean hasDelay, int count);
 
     private native void nativeExtractSmartClipData(long nativeContentViewCoreImpl,
             int x, int y, int w, int h);
 }