cef/libcef/browser/browser_main.cc
Marshall Greenblatt 9cff99dc4e Add support for loading extensions (issue #1947)
- Add CefRequestContext::LoadExtension, CefExtension, CefExtensionHandler and
  related methods/interfaces.
- Add chrome://extensions-support that lists supported Chrome APIs.
- Add CefBrowserHost::SetAutoResizeEnabled and CefDisplayHandler::OnAutoResize
  to support browser resize based on preferred web contents size.
- views: Add support for custom CefMenuButton popups.
- cefclient: Run with `--load-extension=set_page_color` command-line flag for
  an extension loading example. Add `--use-views` on Windows and Linux for an
  even better example.
2017-08-25 18:40:32 -04:00

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7.4 KiB
C++

// Copyright (c) 2012 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 "libcef/browser/browser_main.h"
#include <stdint.h>
#include <string>
#include "libcef/browser/browser_context_impl.h"
#include "libcef/browser/browser_context_proxy.h"
#include "libcef/browser/browser_message_loop.h"
#include "libcef/browser/content_browser_client.h"
#include "libcef/browser/context.h"
#include "libcef/browser/devtools_manager_delegate.h"
#include "libcef/browser/extensions/browser_context_keyed_service_factories.h"
#include "libcef/browser/extensions/extension_system_factory.h"
#include "libcef/browser/extensions/extensions_browser_client.h"
#include "libcef/browser/net/chrome_scheme_handler.h"
#include "libcef/browser/printing/printing_message_filter.h"
#include "libcef/browser/thread_util.h"
#include "libcef/common/extensions/extensions_client.h"
#include "libcef/common/extensions/extensions_util.h"
#include "libcef/common/net/net_resource_provider.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/string_number_conversions.h"
#include "chrome/browser/plugins/plugin_finder.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/gpu_data_manager.h"
#include "content/public/common/content_switches.h"
#include "device/geolocation/access_token_store.h"
#include "device/geolocation/geolocation_delegate.h"
#include "device/geolocation/geolocation_provider.h"
#include "extensions/browser/extension_system.h"
#include "extensions/common/constants.h"
#include "net/base/net_module.h"
#include "ui/base/resource/resource_bundle.h"
#if defined(USE_AURA)
#include "ui/aura/env.h"
#include "ui/display/screen.h"
#include "ui/views/test/desktop_test_views_delegate.h"
#include "ui/views/widget/desktop_aura/desktop_screen.h"
#include "ui/wm/core/wm_state.h"
#if defined(OS_WIN)
#include "ui/base/cursor/cursor_loader_win.h"
#endif
#endif // defined(USE_AURA)
#if defined(USE_AURA) && defined(OS_LINUX)
#include "ui/base/ime/input_method_initializer.h"
#endif
#if defined(OS_LINUX)
#include "libcef/browser/printing/print_dialog_linux.h"
#endif
namespace {
// In-memory store for access tokens used by geolocation.
class CefAccessTokenStore : public device::AccessTokenStore {
public:
// |system_context| is used by NetworkLocationProvider to communicate with a
// remote geolocation service.
explicit CefAccessTokenStore(net::URLRequestContextGetter* system_context)
: system_context_(system_context) {}
void LoadAccessTokens(const LoadAccessTokensCallback& callback) override {
callback.Run(access_token_map_, system_context_);
}
void SaveAccessToken(const GURL& server_url,
const base::string16& access_token) override {
access_token_map_[server_url] = access_token;
}
private:
net::URLRequestContextGetter* system_context_;
AccessTokenMap access_token_map_;
DISALLOW_COPY_AND_ASSIGN(CefAccessTokenStore);
};
// A provider of services for geolocation.
class CefGeolocationDelegate : public device::GeolocationDelegate {
public:
explicit CefGeolocationDelegate(net::URLRequestContextGetter* system_context)
: system_context_(system_context) {}
scoped_refptr<device::AccessTokenStore> CreateAccessTokenStore() override {
return new CefAccessTokenStore(system_context_);
}
private:
net::URLRequestContextGetter* system_context_;
DISALLOW_COPY_AND_ASSIGN(CefGeolocationDelegate);
};
} // namespace
CefBrowserMainParts::CefBrowserMainParts(
const content::MainFunctionParams& parameters)
: BrowserMainParts(), devtools_delegate_(NULL) {}
CefBrowserMainParts::~CefBrowserMainParts() {}
void CefBrowserMainParts::PreMainMessageLoopStart() {
if (!base::MessageLoop::current()) {
// Create the browser message loop.
message_loop_.reset(new CefBrowserMessageLoop());
}
}
void CefBrowserMainParts::PreEarlyInitialization() {
#if defined(USE_AURA) && defined(OS_LINUX)
// TODO(linux): Consider using a real input method or
// views::LinuxUI::SetInstance.
ui::InitializeInputMethodForTesting();
#endif
}
void CefBrowserMainParts::ToolkitInitialized() {
#if defined(USE_AURA)
CHECK(aura::Env::GetInstance());
new views::DesktopTestViewsDelegate;
wm_state_.reset(new wm::WMState);
#if defined(OS_WIN)
ui::CursorLoaderWin::SetCursorResourceModule(
CefContentBrowserClient::Get()->GetResourceDllName());
#endif
#endif // defined(USE_AURA)
}
void CefBrowserMainParts::PostMainMessageLoopStart() {
#if defined(OS_LINUX)
printing::PrintingContextLinux::SetCreatePrintDialogFunction(
&CefPrintDialogLinux::CreatePrintDialog);
printing::PrintingContextLinux::SetPdfPaperSizeFunction(
&CefPrintDialogLinux::GetPdfPaperSize);
#endif
}
int CefBrowserMainParts::PreCreateThreads() {
#if defined(OS_WIN)
PlatformInitialize();
#endif
net::NetModule::SetResourceProvider(&NetResourceProvider);
// Initialize the GpuDataManager before IO access restrictions are applied and
// before the IO thread is started.
content::GpuDataManager::GetInstance();
#if defined(USE_AURA)
display::Screen::SetScreenInstance(views::CreateDesktopScreen());
#endif
return 0;
}
void CefBrowserMainParts::PreMainMessageLoopRun() {
if (extensions::ExtensionsEnabled()) {
// Initialize extension global objects before creating the global
// BrowserContext.
extensions_client_.reset(new extensions::CefExtensionsClient());
extensions::ExtensionsClient::Set(extensions_client_.get());
extensions_browser_client_.reset(
new extensions::CefExtensionsBrowserClient);
extensions::ExtensionsBrowserClient::Set(extensions_browser_client_.get());
// Register additional KeyedService factories here. See
// ChromeBrowserMainExtraPartsProfiles for details.
extensions::cef::EnsureBrowserContextKeyedServiceFactoriesBuilt();
extensions::CefExtensionSystemFactory::GetInstance();
}
printing::CefPrintingMessageFilter::EnsureShutdownNotifierFactoryBuilt();
CefRequestContextSettings settings;
CefContext::Get()->PopulateRequestContextSettings(&settings);
// Create the global RequestContext.
global_request_context_ =
CefRequestContextImpl::CreateGlobalRequestContext(settings);
CefBrowserContextImpl* browser_context = static_cast<CefBrowserContextImpl*>(
global_request_context_->GetBrowserContext());
CefDevToolsManagerDelegate::StartHttpHandler(browser_context);
// Triggers initialization of the singleton instance on UI thread.
PluginFinder::GetInstance()->Init();
device::GeolocationProvider::SetGeolocationDelegate(
new CefGeolocationDelegate(
browser_context->request_context_getter().get()));
scheme::RegisterWebUIControllerFactory();
}
void CefBrowserMainParts::PostMainMessageLoopRun() {
// NOTE: Destroy objects in reverse order of creation.
CefDevToolsManagerDelegate::StopHttpHandler();
// There should be no additional references to the global CefRequestContext
// during shutdown. Did you forget to release a CefBrowser reference?
DCHECK(global_request_context_->HasOneRef());
global_request_context_ = NULL;
if (extensions::ExtensionsEnabled()) {
extensions::ExtensionsBrowserClient::Set(NULL);
extensions_browser_client_.reset();
}
}
void CefBrowserMainParts::PostDestroyThreads() {
#if defined(USE_AURA)
// Delete the DesktopTestViewsDelegate.
delete views::ViewsDelegate::GetInstance();
#endif
}