blob: eacc02a52ef5ba4bb3861fd5cb192a1978cd85b3 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that can
// be found in the LICENSE file.
#pragma once
#include <list>
#include <map>
#include <string>
#include "include/cef_app.h"
#include "base/observer_list.h"
#include "base/threading/platform_thread.h"
#include "third_party/skia/include/core/SkColor.h"
namespace base {
class WaitableEvent;
namespace content {
class ContentServiceManagerMainDelegate;
namespace service_manager {
struct MainParams;
class CefBrowserHostImpl;
class CefBrowserInfoManager;
class CefMainDelegate;
class CefTraceSubscriber;
class CefContext {
typedef std::list<CefRefPtr<CefBrowserHostImpl>> BrowserList;
// Interface to implement for observers that wish to be informed of changes
// to the context. All methods will be called on the UI thread.
class Observer {
// Called before the context is destroyed.
virtual void OnContextDestroyed() = 0;
virtual ~Observer() {}
// Returns the singleton CefContext instance.
static CefContext* Get();
// These methods will be called on the main application thread.
bool Initialize(const CefMainArgs& args,
const CefSettings& settings,
CefRefPtr<CefApp> application,
void* windows_sandbox_info);
void Shutdown();
// Returns true if the current thread is the initialization thread.
bool OnInitThread();
// Returns true if the context is initialized.
bool initialized() { return initialized_; }
// Returns true if the context is shutting down.
bool shutting_down() { return shutting_down_; }
const CefSettings& settings() const { return settings_; }
// Returns the background color for the browser. If |browser_settings| is
// nullptr or does not specify a color then the global settings will be used.
// The alpha component will be either SK_AlphaTRANSPARENT or SK_AlphaOPAQUE
// (e.g. fully transparent or fully opaque). If |is_windowless| is
// STATE_DISABLED then SK_AlphaTRANSPARENT will always be returned. If
// |is_windowless| is STATE_ENABLED then SK_ColorTRANSPARENT may be returned
// to enable transparency for windowless browsers. See additional comments on
// CefSettings.background_color and CefBrowserSettings.background_color.
SkColor GetBackgroundColor(const CefBrowserSettings* browser_settings,
cef_state_t windowless_state) const;
CefTraceSubscriber* GetTraceSubscriber();
// Populate request context settings for the global system context based on
// CefSettings and command-line flags.
void PopulateGlobalRequestContextSettings(
CefRequestContextSettings* settings);
// Normalize and validate request context settings for user-created contexts.
void NormalizeRequestContextSettings(CefRequestContextSettings* settings);
// Manage observer objects. The observer must either outlive this object or
// remove itself before destruction. These methods can only be called on the
// UI thread.
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
bool HasObserver(Observer* observer) const;
void OnContextInitialized();
// Performs shutdown actions that need to occur on the UI thread before any
// threads are destroyed.
void FinishShutdownOnUIThread(base::WaitableEvent* uithread_shutdown_event);
// Destroys the main runner and related objects.
void FinalizeShutdown();
// Track context state.
bool initialized_;
bool shutting_down_;
// The thread on which the context was initialized.
base::PlatformThreadId init_thread_id_;
CefSettings settings_;
std::unique_ptr<CefMainDelegate> main_delegate_;
std::unique_ptr<content::ContentServiceManagerMainDelegate> sm_main_delegate_;
std::unique_ptr<service_manager::MainParams> sm_main_params_;
std::unique_ptr<CefTraceSubscriber> trace_subscriber_;
std::unique_ptr<CefBrowserInfoManager> browser_info_manager_;
// Observers that want to be notified of changes to this object.
base::ObserverList<Observer>::Unchecked observers_;
// Helper macro that returns true if the global context is in a valid state.
(CefContext::Get() && CefContext::Get()->initialized() && \