🏠 Reader Mode info bar implementation

chrome/browser/ui/android/infobars/reader_mode_infobar.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 "chrome/browser/ui/android/infobars/reader_mode_infobar.h"
+
+#include <memory>
+#include <utility>
+
+#include "base/memory/ptr_util.h"
+#include "chrome/browser/android/tab_android.h"
+#include "chrome/browser/infobars/infobar_service.h"
+#include "components/infobars/core/infobar_delegate.h"
+#include "content/public/browser/web_contents.h"
+#include "jni/ReaderModeInfoBar_jni.h"
+#include "ui/android/window_android.h"
+
+using base::android::JavaParamRef;
+using base::android::ScopedJavaLocalRef;
+
+class ReaderModeInfoBarDelegate : public infobars::InfoBarDelegate {
+ public:
+  ~ReaderModeInfoBarDelegate() override {}
+
+  infobars::InfoBarDelegate::InfoBarIdentifier GetIdentifier() const override {
+    return InfoBarDelegate::InfoBarIdentifier::READER_MODE_INFOBAR_ANDROID;
+  }
+
+  bool EqualsDelegate(infobars::InfoBarDelegate* delegate) const override {
+    return delegate->GetIdentifier() == GetIdentifier();
+  }
+};
+
+ReaderModeInfoBar::ReaderModeInfoBar(
+    std::unique_ptr<ReaderModeInfoBarDelegate> delegate)
+    : InfoBarAndroid(std::move(delegate)) {}
+
+ReaderModeInfoBar::~ReaderModeInfoBar() {}
+
+infobars::InfoBarDelegate* ReaderModeInfoBar::GetDelegate() {
+  return delegate();
+}
+
+ScopedJavaLocalRef<jobject> ReaderModeInfoBar::CreateRenderInfoBar(
+    JNIEnv* env) {
+  return Java_ReaderModeInfoBar_create(env);
+}
+
+void ReaderModeInfoBar::ProcessButton(int action) {}
+
+void Create(JNIEnv* env,
+            const JavaParamRef<jclass>& j_caller,
+            const JavaParamRef<jobject>& j_tab) {
+  InfoBarService* service = InfoBarService::FromWebContents(
+      TabAndroid::GetNativeTab(env, j_tab)->web_contents());
+
+  service->AddInfoBar(base::MakeUnique<ReaderModeInfoBar>(
+      base::MakeUnique<ReaderModeInfoBarDelegate>()));
+}
+
+bool RegisterReaderModeInfoBar(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}