cef/libcef/cef_context.cc

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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.
#include "cef_context.h"
#include "browser_impl.h"
#include "browser_webkit_glue.h"
#include "cef_thread.h"
#include "cef_process.h"
#include "../include/cef_nplugin.h"
#include "base/file_util.h"
#if defined(OS_MACOSX) || defined(OS_WIN)
#include "base/nss_util.h"
#endif
#include "webkit/plugins/npapi/plugin_list.h"
// Global CefContext pointer
CefRefPtr<CefContext> _Context;
bool CefInitialize(const CefSettings& settings,
const CefBrowserSettings& browser_defaults)
{
// Return true if the global context already exists.
if(_Context.get())
return true;
if(settings.size != sizeof(cef_settings_t) ||
browser_defaults.size != sizeof(cef_browser_settings_t)) {
NOTREACHED();
return false;
}
// Create the new global context object.
_Context = new CefContext();
// Initialize the global context.
return _Context->Initialize(settings, browser_defaults);
}
void CefShutdown()
{
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED();
return;
}
// Must always be called on the same thread as Initialize.
if(!_Context->process()->CalledOnValidThread()) {
NOTREACHED();
return;
}
// Shut down the global context. This will block until shutdown is complete.
_Context->Shutdown();
// Delete the global context object.
_Context = NULL;
}
void CefDoMessageLoopWork()
{
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED();
return;
}
// Must always be called on the same thread as Initialize.
if(!_Context->process()->CalledOnValidThread()) {
NOTREACHED();
return;
}
_Context->process()->DoMessageLoopIteration();
}
static void UIT_RegisterPlugin(CefPluginInfo* plugin_info)
{
REQUIRE_UIT();
webkit::npapi::WebPluginInfo info;
FilePath filename = FilePath(CefString(&plugin_info->unique_name));
std::string name = CefString(&plugin_info->display_name);
std::string description = CefString(&plugin_info->description);
std::string mime_type = CefString(&plugin_info->mime_type);
webkit::npapi::PluginEntryPoints entry_points;
#if !defined(OS_POSIX) || defined(OS_MACOSX)
entry_points.np_getentrypoints = plugin_info->np_getentrypoints;
#endif
entry_points.np_initialize = plugin_info->np_initialize;
entry_points.np_shutdown = plugin_info->np_shutdown;
webkit::npapi::PluginList::Singleton()->RegisterInternalPlugin(filename,
name, description, mime_type, entry_points);
delete plugin_info;
}
bool CefRegisterPlugin(const CefPluginInfo& plugin_info)
{
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED();
return false;
}
CefThread::PostTask(CefThread::UI, FROM_HERE,
NewRunnableFunction(UIT_RegisterPlugin, new CefPluginInfo(plugin_info)));
return true;
}
static int GetThreadId(CefThreadId threadId)
{
switch(threadId) {
case TID_UI: return CefThread::UI;
case TID_IO: return CefThread::IO;
case TID_FILE: return CefThread::FILE;
};
NOTREACHED();
return -1;
}
bool CefCurrentlyOn(CefThreadId threadId)
{
int id = GetThreadId(threadId);
if(id < 0)
return false;
return CefThread::CurrentlyOn(static_cast<CefThread::ID>(id));
}
class CefTaskHelper : public Task
{
public:
CefTaskHelper(CefRefPtr<CefTask> task, CefThreadId threadId)
: task_(task), thread_id_(threadId) {}
virtual void Run() { task_->Execute(thread_id_); }
private:
CefRefPtr<CefTask> task_;
CefThreadId thread_id_;
DISALLOW_COPY_AND_ASSIGN(CefTaskHelper);
};
bool CefPostTask(CefThreadId threadId, CefRefPtr<CefTask> task)
{
int id = GetThreadId(threadId);
if(id < 0)
return false;
return CefThread::PostTask(static_cast<CefThread::ID>(id), FROM_HERE,
new CefTaskHelper(task, threadId));
}
bool CefPostDelayedTask(CefThreadId threadId, CefRefPtr<CefTask> task,
long delay_ms)
{
int id = GetThreadId(threadId);
if(id < 0)
return false;
return CefThread::PostDelayedTask(static_cast<CefThread::ID>(id), FROM_HERE,
new CefTaskHelper(task, threadId), delay_ms);
}
bool CefParseURL(const CefString& url,
CefURLParts& parts)
{
GURL gurl(url.ToString());
if (!gurl.is_valid())
return false;
CefString(&parts.spec).FromString(gurl.spec());
CefString(&parts.scheme).FromString(gurl.scheme());
CefString(&parts.username).FromString(gurl.username());
CefString(&parts.password).FromString(gurl.password());
CefString(&parts.host).FromString(gurl.host());
CefString(&parts.port).FromString(gurl.port());
CefString(&parts.path).FromString(gurl.path());
CefString(&parts.query).FromString(gurl.query());
return true;
}
bool CefCreateURL(const CefURLParts& parts,
CefString& url)
{
std::string spec = CefString(parts.spec.str, parts.spec.length, false);
std::string scheme = CefString(parts.scheme.str, parts.scheme.length, false);
std::string username =
CefString(parts.username.str, parts.username.length, false);
std::string password =
CefString(parts.password.str, parts.password.length, false);
std::string host = CefString(parts.host.str, parts.host.length, false);
std::string port = CefString(parts.port.str, parts.port.length, false);
std::string path = CefString(parts.path.str, parts.path.length, false);
std::string query = CefString(parts.query.str, parts.query.length, false);
GURL gurl;
if (!spec.empty()) {
gurl = GURL(spec);
} else if (!scheme.empty() && !host.empty()) {
std::stringstream ss;
ss << scheme << "://";
if (!username.empty()) {
ss << username;
if (!password.empty())
ss << ":" << password;
ss << "@";
}
ss << host;
if (!port.empty())
ss << ":" << port;
if (!path.empty())
ss << path;
if (!query.empty())
ss << "?" << query;
gurl = GURL(ss.str());
}
if (gurl.is_valid()) {
url = gurl.spec();
return true;
}
return false;
}
// CefContext
CefContext::CefContext() : initialized_(false), shutting_down_(false)
{
}
CefContext::~CefContext()
{
if(!shutting_down_)
Shutdown();
}
bool CefContext::Initialize(const CefSettings& settings,
const CefBrowserSettings& browser_defaults)
{
settings_ = settings;
browser_defaults_ = browser_defaults;
cache_path_ = FilePath(CefString(&settings.cache_path));
#if defined(OS_MACOSX) || defined(OS_WIN)
// We want to be sure to init NSPR on the main thread.
base::EnsureNSPRInit();
#endif
process_ = new CefProcess(settings_.multi_threaded_message_loop);
process_->CreateChildThreads();
initialized_ = true;
return true;
}
void CefContext::Shutdown()
{
// Must always be called on the same thread as Initialize.
DCHECK(process_->CalledOnValidThread());
shutting_down_ = true;
if(settings_.multi_threaded_message_loop) {
// Event that will be used to signal when shutdown is complete. Start in
// non-signaled mode so that the event will block.
base::WaitableEvent event(false, false);
// Finish shutdown on the UI thread.
CefThread::PostTask(CefThread::UI, FROM_HERE,
NewRunnableMethod(this, &CefContext::UIT_FinishShutdown, &event));
// Block until shutdown is complete.
event.Wait();
} else {
// Finish shutdown on the current thread, which should be the UI thread.
UIT_FinishShutdown(NULL);
}
// Delete the process to destroy the child threads.
process_ = NULL;
}
bool CefContext::AddBrowser(CefRefPtr<CefBrowserImpl> browser)
{
bool found = false;
Lock();
// check that the browser isn't already in the list before adding
BrowserList::const_iterator it = browserlist_.begin();
for(; it != browserlist_.end(); ++it) {
if(it->get() == browser.get()) {
found = true;
break;
}
}
if(!found)
{
browser->UIT_SetUniqueID(next_browser_id_++);
browserlist_.push_back(browser);
}
Unlock();
return !found;
}
bool CefContext::RemoveBrowser(CefRefPtr<CefBrowserImpl> browser)
{
bool deleted = false;
bool empty = false;
Lock();
BrowserList::iterator it = browserlist_.begin();
for(; it != browserlist_.end(); ++it) {
if(it->get() == browser.get()) {
browserlist_.erase(it);
deleted = true;
break;
}
}
if (browserlist_.empty()) {
next_browser_id_ = 1;
empty = true;
}
Unlock();
if (empty) {
CefThread::PostTask(CefThread::UI, FROM_HERE,
NewRunnableFunction(webkit_glue::ClearCache));
}
return deleted;
}
CefRefPtr<CefBrowserImpl> CefContext::GetBrowserByID(int id)
{
CefRefPtr<CefBrowserImpl> browser;
Lock();
BrowserList::const_iterator it = browserlist_.begin();
for(; it != browserlist_.end(); ++it) {
if(it->get()->UIT_GetUniqueID() == id) {
browser = it->get();
break;
}
}
Unlock();
return browser;
}
void CefContext::UIT_FinishShutdown(base::WaitableEvent* event)
{
DCHECK(CefThread::CurrentlyOn(CefThread::UI));
BrowserList list;
Lock();
if (!browserlist_.empty()) {
list = browserlist_;
browserlist_.clear();
}
Unlock();
// Destroy any remaining browser windows.
if (!list.empty()) {
BrowserList::iterator it = list.begin();
for(; it != list.end(); ++it)
(*it)->UIT_DestroyBrowser();
}
if(event)
event->Signal();
}