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// Copyright 2018 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_UI_ANDROID_TAB_MODEL_TAB_MODEL_OBSERVER_JNI_BRIDGE_H_
#define CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_OBSERVER_JNI_BRIDGE_H_
#include <jni.h>
#include "base/android/jni_weak_ref.h"
#include "base/android/scoped_java_ref.h"
#include "base/memory/raw_ref.h"
#include "base/observer_list.h"
#include "chrome/browser/ui/android/tab_model/tab_model_observer.h"
#include "chrome/browser/ui/tabs/tab_list_interface_observer.h"
class TabModel;
// Bridges calls between the C++ and the Java TabModelObservers. Functions in
// this class do little more than translating between Java TabModelObserver
// notifications to native TabModelObserver notifications.
class TabModelObserverJniBridge {
public:
TabModelObserverJniBridge(
JNIEnv* env,
const base::android::JavaRef<jobject>& java_tab_model,
TabModel& tab_model);
TabModelObserverJniBridge(const TabModelObserverJniBridge&) = delete;
TabModelObserverJniBridge& operator=(const TabModelObserverJniBridge&) =
delete;
~TabModelObserverJniBridge();
void Destroy(JNIEnv* env);
// The following functions are called by JNI.
void DidSelectTab(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab,
int type,
int last_id);
void WillCloseTab(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab);
void OnFinishingTabClosure(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab,
int source);
void OnFinishingMultipleTabClosure(
JNIEnv* env,
const base::android::JavaParamRef<jobjectArray>& jtabs,
bool canRestore);
void WillAddTab(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab,
int type);
void DidAddTab(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab,
int type);
void DidMoveTab(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab,
int new_index,
int cur_index);
void TabPendingClosure(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab,
int source);
void TabClosureUndone(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab);
void OnTabCloseUndone(JNIEnv* env,
const base::android::JavaParamRef<jobjectArray>& jtabs);
void TabClosureCommitted(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab);
void AllTabsPendingClosure(
JNIEnv* env,
const base::android::JavaParamRef<jobjectArray>& jtabs);
void AllTabsClosureCommitted(JNIEnv* env);
void TabRemoved(JNIEnv* env,
const base::android::JavaParamRef<jobject>& jtab);
void AddObserver(TabModelObserver* observer);
void AddTabListInterfaceObserver(TabListInterfaceObserver* observer);
void RemoveObserver(TabModelObserver* observer);
void RemoveTabListInterfaceObserver(TabListInterfaceObserver* observer);
bool has_observers() const {
return !model_observers_.empty() || !interface_observers_.empty();
}
private:
// This object's Java counterpart. This objects controls its lifetime.
base::android::ScopedJavaGlobalRef<jobject> java_object_;
// TabModelObservers attached to this bridge.
base::ObserverList<TabModelObserver>::Unchecked model_observers_;
// The C++ TabModel. Owns this object, so is guaranteed to outlive it.
base::raw_ref<TabModel> tab_model_;
// TabListInterfaceObservers attached to this bridge.
base::ObserverList<TabListInterfaceObserver> interface_observers_;
};
#endif // CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_OBSERVER_JNI_BRIDGE_H_
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