/* Copyright (C) 2015 LiveCode Ltd.

This file is part of LiveCode.

LiveCode is free software; you can redistribute it and/or modify it under

the terms of the GNU General Public License v3 as published by the Free

Software Foundation.

LiveCode is distributed in the hope that it will be useful, but WITHOUT ANY

WARRANTY; without even the implied warranty of MERCHANTABILITY or

FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License

for more details.

You should have received a copy of the GNU General Public License

along with LiveCode. If not see <http://www.gnu.org/licenses/>. */

#include <core.h>

#include <stdlib.h>

#include "libbrowser_cef.h"

#include <include/cef_app.h>

#include <include/cef_parser.h>

#include <include/wrapper/cef_scoped_temp_dir.h>

#include <list>

#include <set>

#if defined(TARGET_PLATFORM_POSIX)

#include "signal_restore_posix.h"

#include <sys/time.h>

#endif

////////////////////////////////////////////////////////////////////////////////

#define CEF_DUMMY_URL "http://libbrowser_dummy_url/"

////////////////////////////////////////////////////////////////////////////////

// String conversion

bool MCCefStringToUtf8String(const CefString &p_cef_string, char *&r_u8_string)

{

if (p_cef_string.empty())

return MCCStringClone("", r_u8_string);

return MCCStringFromUnicode(p_cef_string.c_str(), r_u8_string);

}

bool MCCefStringFromUtf8String(const char *p_u8_string, cef_string_t *r_cef_string)

{

return 0 != cef_string_from_utf8(p_u8_string, MCCStringLength(p_u8_string), r_cef_string);

}

bool MCCefStringFromUtf8String(const char *p_u8_string, CefString &r_cef_string)

{

return MCCefStringFromUtf8String(p_u8_string, r_cef_string.GetWritableStruct());

}

bool MCCefStringToUInt(const CefString &p_string, uint32_t &r_int)

{

char_t * t_tmp_string;

t_tmp_string = nil;

uint32_t t_int;

bool t_success;

t_success = MCCefStringToUtf8String(p_string, t_tmp_string);

if (t_success)

{

char *t_end;

t_int = strtoul(t_tmp_string, &t_end, 10);

t_success = t_end == t_tmp_string + MCCStringLength(t_tmp_string);

}

if (t_tmp_string != nil)

MCCStringFree(t_tmp_string);

if (t_success)

r_int = t_int;

return t_success;

}

////////////////////////////////////////////////////////////////////////////////

bool MCCefListToBrowserList(CefRefPtr<CefListValue> p_list, MCBrowserListRef &r_list)

{

bool t_success;

t_success = true;

MCBrowserListRef t_list;

t_list = nil;

size_t t_size;

t_size = p_list->GetSize();

if (t_success)

t_success = MCBrowserListCreate(t_list, t_size);

for (uint32_t i = 0; t_success && i < t_size; i++)

{

switch (p_list->GetType(i))

{

case VTYPE_BOOL:

t_success = MCBrowserListSetBoolean(t_list, i, p_list->GetBool(i));

break;

case VTYPE_INT:

t_success = MCBrowserListSetInteger(t_list, i, p_list->GetInt(i));

break;

case VTYPE_DOUBLE:

t_success = MCBrowserListSetDouble(t_list, i, p_list->GetDouble(i));

break;

case VTYPE_STRING:

{

char *t_string = nil;

t_success = MCCefStringToUtf8String(p_list->GetString(i), t_string) && MCBrowserListSetUTF8String(t_list, i, t_string);

if (t_string != nil)

MCCStringFree(t_string);

break;

}

case VTYPE_LIST:

{

MCBrowserListRef t_list_val = nil;

t_success = MCCefListToBrowserList(p_list->GetList(i), t_list_val) && MCBrowserListSetList(t_list, i, t_list_val);

MCBrowserListRelease(t_list_val);

break;

}

case VTYPE_DICTIONARY:

{

MCBrowserDictionaryRef t_dict_val = nil;

t_success = MCCefDictionaryToBrowserDictionary(p_list->GetDictionary(i), t_dict_val) && MCBrowserListSetDictionary(t_list, i, t_dict_val);

MCBrowserDictionaryRelease(t_dict_val);

break;

}

default:

// unimplemented value type

t_success = false;

}

}

if (t_success)

r_list = t_list;

else

MCBrowserListRelease(t_list);

return t_success;

}

bool MCCefDictionaryToBrowserDictionary(CefRefPtr<CefDictionaryValue> p_dict, MCBrowserDictionaryRef &r_dict)

{

bool t_success;

t_success = true;

MCBrowserDictionaryRef t_dict;

t_dict = nil;

CefDictionaryValue::KeyList t_key_list;

if (t_success)

t_success = p_dict->GetKeys(t_key_list);

if (t_success)

t_success = MCBrowserDictionaryCreate(t_dict, t_key_list.size());

for (CefDictionaryValue::KeyList::iterator i = t_key_list.begin(); t_success && i < t_key_list.end(); i++)

{

char *t_key;

t_key = nil;

if (t_success)

t_success = MCCefStringToUtf8String(*i, t_key);

if (t_success)

{

switch (p_dict->GetType(*i))

{

case VTYPE_BOOL:

t_success = MCBrowserDictionarySetBoolean(t_dict, t_key, p_dict->GetBool(*i));

break;

case VTYPE_INT:

t_success = MCBrowserDictionarySetInteger(t_dict, t_key, p_dict->GetInt(*i));

break;

case VTYPE_DOUBLE:

t_success = MCBrowserDictionarySetDouble(t_dict, t_key, p_dict->GetDouble(*i));

break;

case VTYPE_STRING:

{

char *t_string = nil;

t_success = MCCefStringToUtf8String(p_dict->GetString(*i), t_string) && MCBrowserDictionarySetUTF8String(t_dict, t_key, t_string);

if (t_string != nil)

MCCStringFree(t_string);

break;

}

case VTYPE_LIST:

{

MCBrowserListRef t_list_val = nil;

t_success = MCCefListToBrowserList(p_dict->GetList(*i), t_list_val) && MCBrowserDictionarySetList(t_dict, t_key, t_list_val);

MCBrowserListRelease(t_list_val);

break;

}

case VTYPE_DICTIONARY:

{

MCBrowserDictionaryRef t_dict_val = nil;

t_success = MCCefDictionaryToBrowserDictionary(p_dict->GetDictionary(*i), t_dict_val) && MCBrowserDictionarySetDictionary(t_dict, t_key, t_dict_val);

MCBrowserDictionaryRelease(t_dict_val);

break;

}

default:

// unimplemented value type

t_success = false;

}

}

if (t_key != nil)

MCCStringFree(t_key);

}

if (t_success)

r_dict = t_dict;

else

MCBrowserDictionaryRelease(t_dict);

return t_success;

}

////////////////////////////////////////////////////////////////////////////////

static const char *s_auth_scheme_strings[] =

{

"basic",

"digest",

"ntlm",

"negotiate",

"spdyproxy",

nil

};

bool MCCefAuthSchemeFromCefString(const CefString &p_string, MCCefAuthScheme &r_scheme)

{

for (uint32_t i = 0; s_auth_scheme_strings[i] != nil; i++)

{

if (p_string == s_auth_scheme_strings[i])

{

r_scheme = (MCCefAuthScheme)i;

return true;

}

}

return false;

}

////////////////////////////////////////////////////////////////////////////////

// Cef initialization / shutdown handling

static bool s_cef_initialised = false;

static bool s_cefbrowser_initialised = false;

static uint32_t s_instance_count = 0;

static CefScopedTempDir s_temp_cache;

void MCCefBrowserExternalInit(void)

{

// set up static vars

s_cef_initialised = false;

s_cefbrowser_initialised = false;

s_instance_count = 0;

}

void MCCefBrowserRunloopAction(void *p_context)

{

CefDoMessageLoopWork();

}

class MCCefBrowserApp : public CefApp, CefBrowserProcessHandler

{

public:

virtual CefRefPtr<CefBrowserProcessHandler> GetBrowserProcessHandler() OVERRIDE { return this; }

virtual void OnBeforeChildProcessLaunch(CefRefPtr<CefCommandLine> p_command_line) OVERRIDE

{

if (MCCefPlatformGetHiDPIEnabled())

p_command_line->AppendSwitch(MC_CEF_HIDPI_SWITCH);

}

virtual void OnBeforeCommandLineProcessing(const CefString &p_process_type, CefRefPtr<CefCommandLine> p_command_line) OVERRIDE

{

// Enable WebRTC

p_command_line->AppendSwitch("enable-media-stream");

}

IMPLEMENT_REFCOUNTING(MCCefBrowserApp);

};

extern "C" int initialise_weak_link_cef(void);

// These come from the engine we link to.

extern "C" void *MCSupportLibraryLoad(const char *p_path);

extern "C" void *MCSupportLibraryUnload(void *p_handle);

extern "C" char *MCSupportLibraryCopyNativePath(void *p_handle);

#if defined(WIN32)

static const char *kCefProcessName = "libbrowser-cefprocess.exe";

static const char *kCefPathSeparatorStr = "\\";

static const char kCefPathSeparator = '\\';

#else

static const char *kCefProcessName = "libbrowser-cefprocess";

static const char *kCefPathSeparatorStr = "/";

static const char kCefPathSeparator = '/';

#endif

#if defined(TARGET_PLATFORM_LINUX)

#include <sys/types.h>

#include <sys/stat.h>

#include <unistd.h>

////////////////////////////////////////////////////////////////////////////////

static bool get_link_size(const char *p_path, uint32_t &r_size)

{

if (p_path == nil)

return false;

struct stat t_stat;

if (lstat(p_path, &t_stat) == -1)

return false;

r_size = t_stat.st_size;

return true;

}

static bool get_link_path(const char *p_link, char *&r_path)

{

bool t_success;

t_success = true;

char *t_buffer;

t_buffer = nil;

uint32_t t_buffer_size;

t_buffer_size = 0;

uint32_t t_link_size;

t_success = get_link_size(p_link, t_link_size);

while (t_success && t_link_size + 1 > t_buffer_size)

{

t_buffer_size = t_link_size + 1;

t_success = MCBrowserMemoryReallocate(t_buffer, t_buffer_size, t_buffer);

if (t_success)

{

int32_t t_read;

t_read = readlink(p_link, t_buffer, t_buffer_size);

t_success = t_read >= 0;

t_link_size = t_read;

}

}

if (t_success)

{

t_buffer[t_link_size] = '\0';

r_path = t_buffer;

}

else

MCBrowserMemoryDeallocate(t_buffer);

return t_success;

}

static bool get_exe_path_from_proc_fs(char *&r_path)

{

return get_link_path("/proc/self/exe", r_path);

}

//////////

const char *__MCCefPlatformGetExecutableFolder(void)

{

static char *s_exe_path = nil;

if (s_exe_path == nil)

{

bool t_success;

t_success = get_exe_path_from_proc_fs(s_exe_path);

if (t_success)

{

// remove library component from path

uint32_t t_index;

if (MCCStringLastIndexOf(s_exe_path, '/', t_index))

s_exe_path[t_index] = '\0';

}

}

return s_exe_path;

}

#endif

static bool __MCCefGetLibraryPath(char*& r_path)

{

void *t_module = nullptr;

if (t_module == nullptr)

t_module = MCSupportLibraryLoad("./CEF/libcef");

/* TODO[Bug 19381] On Linux and Windows, the in-git-checkout

* location of CEF is "./CEF" but once LiveCode is installed it's

* in "./Externals/CEF". */

#if defined(WIN32) || defined(TARGET_PLATFORM_LINUX)

if (t_module == nullptr)

t_module = MCSupportLibraryLoad("./Externals/CEF/libcef");

#endif

char *t_module_path =

t_module != nullptr ? MCSupportLibraryCopyNativePath(t_module)

: nullptr;

MCSupportLibraryUnload(t_module);

if (t_module_path == nullptr)

{

return false;

}

char *t_last_sep =

strrchr(t_module_path,

kCefPathSeparator);

if (t_last_sep == nullptr)

{

free(t_module_path);

return false;

}

*t_last_sep = '\0';

r_path = t_module_path;

return true;

}

static bool __MCCefAppendPath(const char *p_base, const char *p_path, char *&r_path)

{

if (p_base == nil)

return MCCStringClone(p_path, r_path);

else if (MCCStringEndsWith(p_base, kCefPathSeparatorStr) ||

*p_path == '\0')

return MCCStringFormat(r_path, "%s%s", p_base, p_path);

else

return MCCStringFormat(r_path, "%s%s%s", p_base, kCefPathSeparatorStr, p_path);

}

static bool __MCCefBuildPath(const char *p_library_path,

const char *p_suffix,

cef_string_t* r_string)

{

char *t_process_path = nullptr;

if (!__MCCefAppendPath(p_library_path,

p_suffix,

t_process_path) ||

!MCCefStringFromUtf8String(t_process_path,

r_string))

{

free(t_process_path);

return false;

}

return true;

}

// IM-2014-03-13: [[ revBrowserCEF ]] Initialisation of the CEF library

bool MCCefInitialise(void)

{

if (s_cef_initialised)

return true;

////////

char *t_library_path = nullptr;

if (!__MCCefGetLibraryPath(t_library_path))

return false;

////////

CefMainArgs t_args;

CefSettings t_settings;

t_settings.multi_threaded_message_loop = MC_CEF_USE_MULTITHREADED_MESSAGELOOP;

t_settings.command_line_args_disabled = true;

t_settings.windowless_rendering_enabled = true;

t_settings.no_sandbox = true;

#ifdef _DEBUG

t_settings.log_severity = LOGSEVERITY_VERBOSE;

#else

t_settings.log_severity = LOGSEVERITY_DISABLE;

#endif

bool t_success = true;

#ifdef TARGET_PLATFORM_LINUX

if (t_success)

t_success = __MCCefBuildPath(__MCCefPlatformGetExecutableFolder(), kCefProcessName, &t_settings.browser_subprocess_path);

#else

if (t_success)

t_success = __MCCefBuildPath(t_library_path, kCefProcessName, &t_settings.browser_subprocess_path);

#endif

if (t_success)

t_success = __MCCefBuildPath(t_library_path, "locales", &t_settings.locales_dir_path);

if (t_success)

t_success = __MCCefBuildPath(t_library_path, "", &t_settings.resources_dir_path);

if (t_success)

t_success = s_temp_cache.CreateUniqueTempDir();

if (t_success)

CefString(&t_settings.cache_path).FromString(s_temp_cache.GetPath());

CefRefPtr<CefApp> t_app = new (nothrow) MCCefBrowserApp();

if (t_success)

t_success = -1 == CefExecuteProcess(t_args, t_app, nil);

if (t_success)

{

#if defined(TARGET_PLATFORM_POSIX)

struct itimerval t_old_timer, t_new_timer;

memset(&t_new_timer, 0, sizeof(t_new_timer));

setitimer(ITIMER_REAL, &t_new_timer, &t_old_timer);

BackupSignalHandlers();

#endif

t_success = CefInitialize(t_args, t_settings, t_app, nil);

#if defined(TARGET_PLATFORM_POSIX)

RestoreSignalHandlers();

setitimer(ITIMER_REAL, &t_old_timer, nil);

#endif

}

s_cef_initialised = t_success;

free(t_library_path);

return s_cef_initialised;

}

// IM-2014-03-13: [[ revBrowserCEF ]] Initialise CEF & install the runloop action

bool MCCefBrowserInitialise(void)

{

if (s_cefbrowser_initialised)

return true;

bool t_success;

t_success = true;

if (t_success)

{

t_success = initialise_weak_link_cef();

}

if (t_success)

t_success = MCCefInitialise();

if (t_success && !MC_CEF_USE_MULTITHREADED_MESSAGELOOP)

t_success = MCBrowserAddRunloopAction(MCCefBrowserRunloopAction, nil);

s_cefbrowser_initialised = t_success;

return s_cefbrowser_initialised;

}

// IM-2014-03-13: [[ revBrowserCEF ]] Shutdown the CEF library

void MCCefFinalise(void)

{

if (!s_cef_initialised)

return;

if (s_temp_cache.IsValid())

{

s_temp_cache.Delete();

}

CefShutdown();

s_cef_initialised = false;

}

// IM-2014-03-13: [[ revBrowserCEF ]] Shut down the browser

void MCCefBrowserFinalise(void)

{

if (!s_cefbrowser_initialised)

return;

if (!MC_CEF_USE_MULTITHREADED_MESSAGELOOP)

MCBrowserRemoveRunloopAction(MCCefBrowserRunloopAction, nil);

s_cefbrowser_initialised = false;

}

void MCCefIncrementInstanceCount(void)

{

if (s_instance_count == 0)

/* UNCHECKED */ MCCefBrowserInitialise();

s_instance_count++;

}

void MCCefDecrementInstanceCount(void)

{

if (s_instance_count == 0)

return;

s_instance_count--;

if (s_instance_count == 0)

MCCefBrowserFinalise();

}

////////////////////////////////////////////////////////////////////////////////

// Utility class to hold a response from a request to the render process

class MCCefMessageResult

{

private:

bool m_have_result;

bool m_success;

CefValueType m_result_type;

CefString m_result_string;

int m_result_int;

public:

void SetResult(bool p_success, const CefString &p_result)

{

if (HaveResult())

Clear();

m_success = p_success;

m_result_string = p_result;

m_result_type = VTYPE_STRING;

m_have_result = true;

}

void SetResult(bool p_success, int p_result)

{

if (HaveResult())

Clear();

m_success = p_success;

m_result_int = p_result;

m_result_type = VTYPE_INT;

m_have_result = true;

}

bool HaveResult() { return m_have_result; }

bool GetResult(CefString &r_result) const

{

if (!m_success)

return false;

if (m_result_type == VTYPE_STRING)

{

r_result = m_result_string;

return true;

}

// convert to string

bool t_converted;

t_converted = false;

switch (m_result_type)

{

case VTYPE_INT:

{

char *t_tmp;

t_tmp = nil;

t_converted = MCCStringFormat(t_tmp, "%d", m_result_int) &&

MCCefStringFromUtf8String(t_tmp, r_result);

if (t_tmp != nil)

MCCStringFree(t_tmp);

}

break;

case VTYPE_NULL:

case VTYPE_BOOL:

case VTYPE_DOUBLE:

case VTYPE_STRING:

case VTYPE_BINARY:

case VTYPE_DICTIONARY:

case VTYPE_LIST:

case VTYPE_INVALID:

/* UNIMPLEMENTED */

break;

}

return t_converted;

}

bool GetResult(int &r_result) const

{

if (!m_success)

return false;

if (m_result_type == VTYPE_INT)

{

r_result = m_result_int;

return true;

}

// convert to int

return false;

}

void Clear()

{

m_have_result = false;

m_result_string.ClearAndFree();

}

};

////////////////////////////////////////////////////////////////////////////////

// Browser client - receives callback messages from the browser

struct MCCefErrorInfo

{

CefString url;

CefString error_message;

CefLoadHandler::ErrorCode error_code;

};

class MCCefBrowserClient : public CefClient, CefLifeSpanHandler, CefRequestHandler, /* CefDownloadHandler ,*/ CefLoadHandler, CefContextMenuHandler, CefDragHandler

{

public:

enum PageOrigin

{

kNone,

kSetUrl,

kSetSource,

kBrowse,

};

private:

int m_browser_id;

int m_popup_browser_id = 0;

MCCefBrowserBase *m_owner;

MCCefMessageResult m_message_result;

std::map<int64_t, MCCefErrorInfo> m_load_error_frames;

// Describes where loading url requests came from

std::map<CefString, PageOrigin> m_load_url_origins;

CefString m_last_request_url;

PageOrigin m_displayed_page_origin;

// Error handling - we need to keep track of url that failed to load in a

// frame so we can send the correct url in onLoadEnd()

void AddLoadErrorFrame(int64_t p_id, const CefString &p_url, const CefString &p_error_msg, CefLoadHandler::ErrorCode p_error_code)

{

m_load_error_frames[p_id].url = p_url;

m_load_error_frames[p_id].error_message = p_error_msg;

m_load_error_frames[p_id].error_code = p_error_code;

}

bool FindLoadErrorFrame(int64_t p_id, MCCefErrorInfo &r_info, bool p_delete)

{

std::map<int64_t, MCCefErrorInfo>::iterator t_iter;

t_iter = m_load_error_frames.find(p_id);

if (t_iter == m_load_error_frames.end())

return false;

r_info = t_iter->second;

if (p_delete)

m_load_error_frames.erase(t_iter);

return true;

}

bool RemoveLoadErrorFrame(int64_t p_id, CefString &r_error_url, CefString &r_error_msg, CefLoadHandler::ErrorCode &r_error_code)

{

MCCefErrorInfo t_info;

if (!FindLoadErrorFrame(p_id, t_info, true))

return false;

r_error_url = t_info.url;

r_error_msg = t_info.error_message;

r_error_code = t_info.error_code;

return true;

}

bool FetchLoadErrorFrame(int64_t p_id, CefString &r_error_url, CefString &r_error_msg, CefLoadHandler::ErrorCode &r_error_code)

{

MCCefErrorInfo t_info;

if (!FindLoadErrorFrame(p_id, t_info, false))

return false;

r_error_url = t_info.url;

r_error_msg = t_info.error_message;

r_error_code = t_info.error_code;

return true;

}

public:

MCCefBrowserClient(MCCefBrowserBase *p_owner)

{

m_owner = p_owner;

m_browser_id = 0;

m_displayed_page_origin = PageOrigin::kNone;

}

// IM-2014-07-21: [[ Bug 12296 ]] Method to allow owner to notify client of its deletion

void OnOwnerClosed(void)

{

m_owner = nil;

}

// Tell browser which callback interfaces we implement

virtual CefRefPtr<CefLifeSpanHandler> GetLifeSpanHandler() OVERRIDE { return this; }

virtual CefRefPtr<CefRequestHandler> GetRequestHandler() OVERRIDE { return this; }

// virtual CefRefPtr<CefDownloadHandler> GetDownloadHandler() OVERRIDE { return this; }

virtual CefRefPtr<CefLoadHandler> GetLoadHandler() OVERRIDE { return this; }

virtual CefRefPtr<CefContextMenuHandler> GetContextMenuHandler() OVERRIDE { return this; }

virtual CefRefPtr<CefDragHandler> GetDragHandler() OVERRIDE { return this; }

void AddLoadingUrl(const CefString &p_url, PageOrigin p_origin)

{

m_load_url_origins[p_url] = p_origin;

}

void RemoveLoadingUrl(const CefString &p_url)

{

m_load_url_origins.erase(p_url);

}

bool GetLoadingUrlOrigin(const CefString &p_url, PageOrigin &r_origin)

{

auto t_iter = m_load_url_origins.find(p_url);

if (t_iter == m_load_url_origins.end())

return false;

r_origin = t_iter->second;

return true;

}

PageOrigin GetDisplayedPageOrigin()

{

return m_displayed_page_origin;

}

MCCefMessageResult &GetMessageResult()

{

return m_message_result;

}

virtual bool OnProcessMessageReceived(CefRefPtr<CefBrowser> p_browser, CefProcessId p_source_process, CefRefPtr<CefProcessMessage> p_message) OVERRIDE

{

CefString t_message_name;

t_message_name = p_message->GetName();

if (t_message_name == MC_CEFMSG_RESULT)

{

// When we get a result message, the result is stored in the message result object

CefRefPtr<CefListValue> t_args;

t_args = p_message->GetArgumentList();

switch (t_args->GetType(1))

{

case VTYPE_STRING:

m_message_result.SetResult(t_args->GetBool(0), t_args->GetString(1));

break;

case VTYPE_INT:

m_message_result.SetResult(t_args->GetBool(0), t_args->GetInt(1));

break;

default:

MCAssert(false);

}

MCBrowserRunloopBreakWait();

return true;

}

else if (t_message_name == MC_CEFMSG_JS_HANDLER)

{

// Handle JavaScript call to LiveCode handler

CefRefPtr<CefListValue> t_args;

t_args = p_message->GetArgumentList();

char *t_handler;

t_handler = nil;

bool t_success;

t_success = true;

// IM-2014-07-21: [[ Bug 12296 ]] Don't proceed with callback if browser has been closed

if (t_success)

t_success = nil != m_owner;

if (t_success)

t_success = MCCefStringToUtf8String(t_args->GetString(0), t_handler);

MCBrowserListRef t_param_list;

t_param_list = nil;

if (t_success)

t_success = MCCefListToBrowserList(t_args->GetList(1), t_param_list);

if (t_success)

m_owner->OnJavaScriptCall(t_handler, t_param_list);

if (t_handler)

MCCStringFree(t_handler);

if (t_param_list != nil)

MCBrowserListRelease(t_param_list);

return true;

}

return CefClient::OnProcessMessageReceived(p_browser, p_source_process, p_message);

}

// CefLifeSpanHandler interface

// Called on UI thread

virtual void OnAfterCreated(CefRefPtr<CefBrowser> p_browser) OVERRIDE

{

// Keep track of first created browser instance. Any others belong to pop-ups

if (m_browser_id == 0)

{

m_browser_id = p_browser->GetIdentifier();

// IM-2014-07-21: [[ Bug 12296 ]] Check owner has not been closed before invoking callback

if (m_owner != nil)

m_owner->OnCefBrowserCreated(p_browser);

}

else

{

m_popup_browser_id = p_browser->GetIdentifier();

}

MCCefIncrementInstanceCount();

}

virtual void OnBeforeClose(CefRefPtr<CefBrowser> p_browser) OVERRIDE

{

if (m_owner != nil)

m_owner->OnCefBrowserClosed(p_browser);

MCCefDecrementInstanceCount();

}

virtual bool OnBeforePopup(

CefRefPtr<CefBrowser> p_browser,

CefRefPtr<CefFrame> p_frame,

const CefString& p_target_url,

const CefString& p_target_frame_name,

CefLifeSpanHandler::WindowOpenDisposition p_target_disposition,

bool p_user_gesture,

const CefPopupFeatures& p_popup_features,

CefWindowInfo& p_window_info,

CefRefPtr<CefClient>& p_client,

CefBrowserSettings& p_settings,

bool* p_no_javascript_access ) OVERRIDE

{

// returning true here will prevent popup windows from opening

// IM-2014-07-21: [[ Bug 12296 ]] If browser has been closed then exit

if (nil == m_owner)

return true;

CefWindowInfo(t_window_info);

t_window_info.SetAsWindowless(p_browser->GetHost()->GetWindowHandle());

p_window_info = t_window_info;