Support dragging texts out of webview/Chrome.

content/browser/android/content_view_core_impl.cc

 // 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.
 
 #include "content/browser/android/content_view_core_impl.h"
 
 #include <stddef.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 47 matching lines @@
 #include "ui/android/view_android.h"
 #include "ui/android/window_android.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/events/android/motion_event_android.h"
 #include "ui/events/blink/blink_event_util.h"
 #include "ui/events/event_utils.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/geometry/point_conversions.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/geometry/size_f.h"
+#include "ui/gfx/image/image_skia.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF16;
 using base::android::ConvertJavaStringToUTF8;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::ConvertUTF8ToJavaString;
 using base::android::ScopedJavaLocalRef;
 using blink::WebGestureEvent;
 using blink::WebInputEvent;
 
@@ skipping 1444 matching lines @@
           drop_data.html = base::NullableString16(text_to_drop, false);
         }
       }
 
       wcva->OnPerformDrop(&drop_data, location, screen_location);
       break;
     }
     case JNI_DragEvent::ACTION_DRAG_EXITED:
       wcva->OnDragExited();
       break;
-    default:  // STARTED and ENDED. Nothing meaningful to do.
+    case JNI_DragEvent::ACTION_DRAG_ENDED:
+      wcva->OnDragEnded();
+      break;
+    case JNI_DragEvent::ACTION_DRAG_STARTED:
+      // Nothing meaningful to do.
       break;
   }
 }
 
 void ContentViewCoreImpl::RequestTextSurroundingSelection(
     int max_length,
     const base::Callback<
         void(const base::string16& content, int start_offset, int end_offset)>&
         callback) {
   DCHECK(!callback.is_null());
@@ skipping 11 matching lines @@
 void ContentViewCoreImpl::OnShowUnhandledTapUIIfNeeded(int x_dip, int y_dip) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   if (obj.is_null())
     return;
   Java_ContentViewCore_onShowUnhandledTapUIIfNeeded(
       env, obj.obj(), static_cast<jint>(x_dip * dpi_scale()),
       static_cast<jint>(y_dip * dpi_scale()));
 }
 
+void ContentViewCoreImpl::StartDragging(const base::string16& dragged_text,
+                                        const gfx::ImageSkia& image) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
+  if (obj.is_null())
+    return;
+
+  ScopedJavaLocalRef<jstring> jtext =
+      ConvertUTF16ToJavaString(env, dragged_text);
+  Java_ContentViewCore_startDragging(
+      env, obj.obj(), jtext.obj(),
+      gfx::ConvertToJavaBitmap(image.bitmap()).obj());
+}
+
 void ContentViewCoreImpl::OnSmartClipDataExtracted(
     const base::string16& text,
     const base::string16& html,
     const gfx::Rect& clip_rect) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   if (obj.is_null())
     return;
   ScopedJavaLocalRef<jstring> jtext = ConvertUTF16ToJavaString(env, text);
   ScopedJavaLocalRef<jstring> jhtml = ConvertUTF16ToJavaString(env, html);
@@ skipping 68 matching lines @@
     return ScopedJavaLocalRef<jobject>();
 
   return view->GetJavaObject();
 }
 
 bool RegisterContentViewCore(JNIEnv* env) {
   return RegisterNativesImpl(env) && JNI_DragEvent::RegisterNativesImpl(env);
 }
 
 }  // namespace content