cef/cef1/libcef/cef_context.h

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// Copyright (c) 2010 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.
#ifndef CEF_LIBCEF_CEF_CONTEXT_H_
#define CEF_LIBCEF_CEF_CONTEXT_H_
#pragma once
#include <list>
#include <map>
#include <string>
#include "include/cef_app.h"
#include "include/cef_base.h"
#include "libcef/browser_file_system.h"
#include "libcef/browser_request_context.h"
#include "libcef/cef_process.h"
#include "base/at_exit.h"
#include "base/atomic_sequence_num.h"
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/files/scoped_temp_dir.h"
#include "base/threading/sequenced_worker_pool.h"
class CefBrowserImpl;
class CefResourceBundleDelegate;
class WebViewHost;
namespace base {
class WaitableEvent;
}
class CefContext : public CefBase {
public:
typedef std::list<CefRefPtr<CefBrowserImpl> > BrowserList;
CefContext();
~CefContext();
// These methods will be called on the main application thread.
bool Initialize(const CefSettings& settings, CefRefPtr<CefApp> application);
void Shutdown();
// 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_; }
CefProcess* process() { return process_.get(); }
int GetNextBrowserID();
void AddBrowser(CefRefPtr<CefBrowserImpl> browser);
void RemoveBrowser(CefRefPtr<CefBrowserImpl> browser);
CefRefPtr<CefBrowserImpl> GetBrowserByID(int id);
BrowserList* GetBrowserList() { return &browserlist_; }
void InitializeResourceBundle();
void CleanupResourceBundle();
string16 GetLocalizedString(int message_id) const;
base::StringPiece GetDataResource(int resource_id) const;
base::FilePath GetResourcesFilePath() const;
// Retrieve the path at which cache data will be stored on disk. If empty,
// cache data will be stored in-memory.
const base::FilePath& cache_path() const { return cache_path_; }
const CefSettings& settings() const { return settings_; }
CefRefPtr<CefApp> application() const { return application_; }
// Return the locale specified in CefSettings or the default value of "en-US".
std::string locale() const;
// The BrowserRequestContext object is managed by CefProcessIOThread.
void set_request_context(BrowserRequestContext* request_context) {
request_context_ = request_context;
}
BrowserRequestContext* request_context() { return request_context_; }
BrowserFileSystem* file_system() { return &file_system_; }
// Used to keep track of the web view host we're dragging over. WARNING:
// this pointer should never be dereferenced. Use it only for comparing
// pointers.
WebViewHost* current_webviewhost() { return current_webviewhost_; }
void set_current_webviewhost(WebViewHost* host) {
current_webviewhost_ = host;
}
// The SequencedWorkerPool object is managed by CefProcessUIThread.
void set_blocking_pool(base::SequencedWorkerPool* blocking_pool) {
blocking_pool_ = blocking_pool;
}
base::SequencedWorkerPool* blocking_pool() { return blocking_pool_.get(); }
static bool ImplementsThreadSafeReferenceCounting() { return true; }
// Keep count of DevTools windows, need to re-enable stack trace
// functionality for uncaught exceptions.
void UIT_DevToolsClientCreated();
void UIT_DevToolsClientDestroyed();
private:
// Performs shutdown actions that need to occur on the UI thread before any
// threads are destroyed.
void UIT_FinishShutdown(base::WaitableEvent* browser_shutdown_event,
base::WaitableEvent* uithread_shutdown_event);
// Track context state.
bool initialized_;
bool shutting_down_;
// Manages the various process threads.
scoped_ptr<CefProcess> process_;
// Initialize the AtExitManager on the main application thread to avoid
// asserts and possible memory leaks.
base::AtExitManager at_exit_manager_;
CefSettings settings_;
CefRefPtr<CefApp> application_;
base::FilePath cache_path_;
base::ScopedTempDir cache_temp_dir_;
BrowserRequestContext* request_context_;
BrowserFileSystem file_system_;
scoped_ptr<CefResourceBundleDelegate> resource_bundle_delegate_;
// Map of browsers that currently exist.
BrowserList browserlist_;
// Used for assigning unique IDs to browser instances.
base::AtomicSequenceNumber next_browser_id_;
WebViewHost* current_webviewhost_;
scoped_refptr<base::SequencedWorkerPool> blocking_pool_;
int dev_tools_client_count_;
IMPLEMENT_REFCOUNTING(CefContext);
IMPLEMENT_LOCKING(CefContext);
};
// Global context object pointer.
extern CefRefPtr<CefContext> _Context;
// Helper macro that returns true if the global context is in a valid state.
#define CONTEXT_STATE_VALID() \
(_Context.get() && _Context->initialized() && !_Context->shutting_down())
#endif // CEF_LIBCEF_CEF_CONTEXT_H_