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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_TAB_HELPER_H_
#define CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_TAB_HELPER_H_
#include <memory>
#include "base/android/jni_weak_ref.h"
#include "base/memory/weak_ptr.h"
#include "components/prefs/pref_change_registrar.h"
class Profile;
// Provides the native support needed by the Java class by the same name.
// This coordinates Tab changes with Contextual Search.
class ContextualSearchTabHelper {
public:
ContextualSearchTabHelper(JNIEnv* env,
const jni_zero::JavaRef<jobject>& obj,
Profile* profile);
void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
ContextualSearchTabHelper(const ContextualSearchTabHelper&) = delete;
ContextualSearchTabHelper& operator=(const ContextualSearchTabHelper&) =
delete;
// Installs the UnhandledTapNotifier Mojo handler if needed.
// The |j_base_web_contents| is a java WebContents of the base page tab.
// The |device_scale_factor| is the ratio of pixels to dips.
void InstallUnhandledTapNotifierIfNeeded(
JNIEnv* env,
jobject obj,
const base::android::JavaParamRef<jobject>& j_base_web_contents,
jfloat device_scale_factor);
private:
~ContextualSearchTabHelper();
// Methods that call back to Java.
// Call when the preferences change.
void OnContextualSearchPrefChanged();
// Call when an unhandled tap needs to show the UI for a tap at the given
// position.
void OnShowUnhandledTapUIIfNeeded(int x_px, int y_px);
JavaObjectWeakGlobalRef weak_java_ref_;
std::unique_ptr<PrefChangeRegistrar> pref_change_registrar_;
base::WeakPtrFactory<ContextualSearchTabHelper> weak_factory_{this};
};
#endif // CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_TAB_HELPER_H_
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