Factor out RenderWidgetHostConnector

content/browser/android/selection_popup_controller.cc

+// Copyright 2017 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/selection_popup_controller.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
+#include "content/browser/renderer_host/render_widget_host_view_android.h"
+#include "content/public/browser/web_contents.h"
+#include "jni/SelectionPopupController_jni.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ConvertUTF8ToJavaString;
+using base::android::JavaParamRef;
+using base::android::ScopedJavaLocalRef;
+
+namespace content {
+
+void Init(JNIEnv* env,
+          const JavaParamRef<jobject>& obj,
+          const JavaParamRef<jobject>& jweb_contents) {
+  WebContents* web_contents = WebContents::FromJavaWebContents(jweb_contents);
+  DCHECK(web_contents);
+
+  // Left unowned but will be destroyed when |WebContentsDestroyed| is called.
+  new SelectionPopupController(env, obj, web_contents);
+}
+
+bool RegisterSelectionPopupController(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+SelectionPopupController::SelectionPopupController(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    WebContents* web_contents)
+    : RenderProcessConnector(web_contents) {
+  java_obj_ = JavaObjectWeakGlobalRef(env, obj);
+}
+
+SelectionPopupController::~SelectionPopupController() {
+  UpdateRenderProcessConnection(rwhva(), nullptr);
+}
+
+void SelectionPopupController::UpdateRenderProcessConnection(
+    RenderWidgetHostViewAndroid* old_rwhva,
+    RenderWidgetHostViewAndroid* new_rwhva) {
+  if (old_rwhva)
+    old_rwhva->set_selection_popup_controller(nullptr);
+  if (new_rwhva)
+    new_rwhva->set_selection_popup_controller(this);
+}
+
+void SelectionPopupController::OnSelectionEvent(
+    ui::SelectionEventType event,
+    const gfx::PointF& selection_anchor,
+    const gfx::RectF& selection_rect) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_obj_.get(env);
+  if (obj.is_null())
+    return;
+
+  Java_SelectionPopupController_onSelectionEvent(
+      env, obj, event, selection_anchor.x(), selection_anchor.y(),
+      selection_rect.x(), selection_rect.y(), selection_rect.right(),
+      selection_rect.bottom());
+}
+
+void SelectionPopupController::OnSelectionChanged(const std::string& text) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_obj_.get(env);
+  if (obj.is_null())
+    return;
+  ScopedJavaLocalRef<jstring> jtext = ConvertUTF8ToJavaString(env, text);
+  Java_SelectionPopupController_onSelectionChanged(env, obj, jtext);
+}
+
+}  // namespace content