bool ClientApp::OnProcessMessageReceived(
CefRefPtr<CefBrowser> browser,
CefProcessId source_process,
CefRefPtr<CefProcessMessage> message) {
ASSERT(source_process == PID_BROWSER);
bool handled = false;
RenderDelegateSet::iterator it = render_delegates_.begin();
for (; it != render_delegates_.end() && !handled; ++it) {
handled = (*it)->OnProcessMessageReceived(this, browser, source_process,
message);
}
if (handled)
return true;
// Execute the registered JavaScript callback if any.
if (!callback_map_.empty()) {
CefString message_name = message->GetName();
CallbackMap::const_iterator it = callback_map_.find(
std::make_pair(message_name.ToString(),
browser->GetIdentifier()));
if (it != callback_map_.end()) {
// Keep a local reference to the objects. The callback may remove itself
// from the callback map.
CefRefPtr<CefV8Context> context = it->second.first;
CefRefPtr<CefV8Value> callback = it->second.second;
// Enter the context.
context->Enter();
CefV8ValueList arguments;
// First argument is the message name.
arguments.push_back(CefV8Value::CreateString(message_name));
// Second argument is the list of message arguments.
CefRefPtr<CefListValue> list = message->GetArgumentList();
CefRefPtr<CefV8Value> args =
CefV8Value::CreateArray(static_cast<int>(list->GetSize()));
SetList(list, args);
arguments.push_back(args);
// Execute the callback.
CefRefPtr<CefV8Value> retval = callback->ExecuteFunction(NULL, arguments);
if (retval.get()) {
if (retval->IsBool())
handled = retval->GetBoolValue();
}
// Exit the context.
context->Exit();
}
}
return handled;
}
// Simple function for formatted output of a V8 value.
void PrintValue(CefRefPtr<CefV8Value> value, std::stringstream &stream,
int indent)
{
std::stringstream indent_stream;
for(int i = 0; i < indent; ++i)
indent_stream << " ";
std::string indent_str = indent_stream.str();
if(value->IsUndefined())
stream << "(undefined)";
else if(value->IsNull())
stream << "(null)";
else if(value->IsBool())
stream << "(bool) " << (value->GetBoolValue() ? "true" : "false");
else if(value->IsInt())
stream << "(int) " << value->GetIntValue();
else if(value->IsDouble())
stream << "(double) " << value->GetDoubleValue();
else if(value->IsString())
stream << "(string) " << std::string(value->GetStringValue());
else if(value->IsFunction())
stream << "(function) " << std::string(value->GetFunctionName());
else if(value->IsArray()) {
stream << "(array) [";
int len = value->GetArrayLength();
for(int i = 0; i < len; ++i) {
stream << "\n " << indent_str.c_str() << i << " = ";
PrintValue(value->GetValue(i), stream, indent+1);
}
stream << "\n" << indent_str.c_str() << "]";
} else if(value->IsObject()) {
stream << "(object) [";
std::vector<CefString> keys;
if(value->GetKeys(keys)) {
for(size_t i = 0; i < keys.size(); ++i) {
stream << "\n " << indent_str.c_str() << keys[i].c_str() << " = ";
PrintValue(value->GetValue(keys[i]), stream, indent+1);
}
}
stream << "\n" << indent_str.c_str() << "]";
}
}
bool ClientApp::OnProcessMessageReceived(
CefRefPtr<CefBrowser> browser,
CefProcessId source_process,
CefRefPtr<CefProcessMessage> message) {
ASSERT(source_process == PID_BROWSER);
bool handled = false;
// Execute delegate callbacks.
RenderDelegateSet::iterator it = render_delegates_.begin();
for (; it != render_delegates_.end() && !handled; ++it) {
handled = (*it)->OnProcessMessageReceived(this, browser, source_process, message);
}
if (!handled) {
if (message->GetName() == "invokeCallback") {
// This is called by the appshell extension handler to invoke the asynchronous
// callback function
CefRefPtr<CefListValue> messageArgs = message->GetArgumentList();
int32 callbackId = messageArgs->GetInt(0);
CefRefPtr<CefV8Context> context = callback_map_[callbackId].first;
CefRefPtr<CefV8Value> callbackFunction = callback_map_[callbackId].second;
CefV8ValueList arguments;
context->Enter();
// Sanity check to make sure the context is still attched to a browser.
// Async callbacks could be initiated after a browser instance has been deleted,
// which can lead to bad things. If the browser instance has been deleted, don't
// invoke this callback.
if (context->GetBrowser()) {
for (size_t i = 1; i < messageArgs->GetSize(); i++) {
arguments.push_back(ListValueToV8Value(messageArgs, i));
}
callbackFunction->ExecuteFunction(NULL, arguments);
}
context->Exit();
callback_map_.erase(callbackId);
} else if (message->GetName() == "executeCommand") {
// This is called by the browser process to execute a command via JavaScript
//
// The first argument is the command name. This is required.
// The second argument is a message id. This is optional. If set, a response
// message will be sent back to the browser process.
CefRefPtr<CefListValue> messageArgs = message->GetArgumentList();
CefString commandName = messageArgs->GetString(0);
int messageId = messageArgs->GetSize() > 1 ? messageArgs->GetInt(1) : -1;
bool handled = false;
StContextScope ctx(browser->GetMainFrame()->GetV8Context());
CefRefPtr<CefV8Value> global = ctx.GetContext()->GetGlobal();
if (global->HasValue("brackets")) {
CefRefPtr<CefV8Value> brackets = global->GetValue("brackets");
if (brackets->HasValue("shellAPI")) {
CefRefPtr<CefV8Value> shellAPI = brackets->GetValue("shellAPI");
if (shellAPI->HasValue("executeCommand")) {
CefRefPtr<CefV8Value> executeCommand = shellAPI->GetValue("executeCommand");
if (executeCommand->IsFunction()) {
CefRefPtr<CefV8Value> retval;
CefV8ValueList args;
args.push_back(CefV8Value::CreateString(commandName));
retval = executeCommand->ExecuteFunction(global, args);
if (retval) {
handled = retval->GetBoolValue();
}
}
}
}
}
// Return a message saying whether or not the command was handled
if (messageId != -1) {
CefRefPtr<CefProcessMessage> result = CefProcessMessage::Create("executeCommandCallback");
result->GetArgumentList()->SetInt(0, messageId);
result->GetArgumentList()->SetBool(1, handled);
browser->SendProcessMessage(PID_BROWSER, result);
}
}
}
return handled;
}
void V8ValueAppendToCefListValue(CefRefPtr<CefV8Value> v8Value,
CefRefPtr<CefListValue> listValue,
int nestingLevel) {
if (!v8Value->IsValid()) {
DebugLog("V8ValueAppendToCefListValue(): IsValid() FAILED");
return;
}
if (nestingLevel > 8) {
DebugLog("V8ValueAppendToCefListValue(): WARNING: max nesting level (8) " \
"exceeded");
return;
}
if (v8Value->IsUndefined() || v8Value->IsNull()) {
listValue->SetNull((int)listValue->GetSize());
} else if (v8Value->IsBool()) {
listValue->SetBool((int)listValue->GetSize(), v8Value->GetBoolValue());
} else if (v8Value->IsInt()) {
listValue->SetInt((int)listValue->GetSize(), v8Value->GetIntValue());
} else if (v8Value->IsUInt()) {
uint32 uint32_value = v8Value->GetUIntValue();
CefRefPtr<CefBinaryValue> binaryValue = CefBinaryValue::Create(
&uint32_value, sizeof(uint32_value));
listValue->SetBinary((int)listValue->GetSize(), binaryValue);
} else if (v8Value->IsDouble()) {
listValue->SetDouble((int)listValue->GetSize(), v8Value->GetDoubleValue());
} else if (v8Value->IsDate()) {
// TODO: in time_utils.pyx there are already functions for
// converting cef_time_t to python DateTime, we could easily
// add a new function for converting the python DateTime to
// string and then to CefString and expose the function using
// the "public" keyword. But how do we get the cef_time_t
// structure from the CefTime class? GetDateValue() returns
// CefTime class.
listValue->SetNull((int)listValue->GetSize());
} else if (v8Value->IsString()) {
listValue->SetString((int)listValue->GetSize(), v8Value->GetStringValue());
} else if (v8Value->IsArray()) {
// Check for IsArray() must happen before the IsObject() check.
int length = v8Value->GetArrayLength();
CefRefPtr<CefListValue> newListValue = CefListValue::Create();
for (int i = 0; i < length; ++i) {
V8ValueAppendToCefListValue(v8Value->GetValue(i), newListValue,
nestingLevel + 1);
}
listValue->SetList((int)listValue->GetSize(), newListValue);
} else if (v8Value->IsFunction()) {
// Check for IsFunction() must happen before the IsObject() check.
if (CefV8Context::InContext()) {
CefRefPtr<CefV8Context> context = \
CefV8Context::GetCurrentContext();
CefRefPtr<CefFrame> frame = context->GetFrame();
std::string strCallbackId = PutJavascriptCallback(frame, v8Value);
/* strCallbackId = '####cefpython####' \
'{"what"=>"javascript-callback", ..}' */
listValue->SetString((int)listValue->GetSize(), strCallbackId);
} else {
listValue->SetNull((int)listValue->GetSize());
DebugLog("V8ValueAppendToCefListValue() FAILED: not in V8 context"
" , FATAL ERROR!");
}
} else if (v8Value->IsObject()) {
// Check for IsObject() must happen after the IsArray()
// and IsFunction() checks.
listValue->SetDictionary((int)listValue->GetSize(),
V8ObjectToCefDictionaryValue(v8Value, nestingLevel + 1));
} else {
listValue->SetNull((int)listValue->GetSize());
DebugLog("V8ValueAppendToCefListValue() FAILED: unknown V8 type");
}
}
bool CSJsUi::Execute(const CefString& name, CefRefPtr<CefV8Value> object, const CefV8ValueList& arguments, CefRefPtr<CefV8Value>& retval, CefString& exception)
{
if (name == "startMove")
{
mWindow->StartMove();
retval = CefV8Value::CreateNull();
return true;
}
else if (name == "stopMove")
{
mWindow->StopMove();
retval = CefV8Value::CreateNull();
return true;
}
else if (name == "startResize")
{
mWindow->StartResize();
retval = CefV8Value::CreateNull();
return true;
}
else if (name == "stopResize")
{
mWindow->StopResize();
retval = CefV8Value::CreateNull();
return true;
}
else if (name == "show")
{
if (arguments.size() == 1)
{
CefRefPtr<CefV8Value> showWindow = arguments[0];
bool show = showWindow->GetBoolValue();
mWindow->Show(show);
}
retval = CefV8Value::CreateNull();
return true;
}
else if (name == "close")
{
mWindow->Close();
retval = CefV8Value::CreateNull();
return true;
}
else if (name == "setSize")
{
if (arguments.size() == 2)
{
int width = arguments[0]->GetIntValue();
int height = arguments[1]->GetIntValue();
mWindow->SetSize(width, height);
retval = CefV8Value::CreateNull();
return true;
}
}
else if (name == "move")
{
if (arguments.size() == 2)
{
int x = arguments[0]->GetIntValue();
int y = arguments[1]->GetIntValue();
mWindow->SetPos(x, y);
retval = CefV8Value::CreateNull();
return true;
}
}
else if (name == "screenSize")
{
int width, height;
mWindow->GetScreenSize(width, height);
CefRefPtr<CefV8Value> obj = CefV8Value::CreateObject(NULL, NULL);
obj->SetValue("width", CefV8Value::CreateInt(width), V8_PROPERTY_ATTRIBUTE_READONLY);
obj->SetValue("height", CefV8Value::CreateInt(height), V8_PROPERTY_ATTRIBUTE_READONLY);
retval = obj;
return true;
}
else if (name == "createWindow")
{
if (arguments.size() == 1)
{
std::string url = arguments[0]->GetStringValue().ToString();
CSLogDebug("createWindow(%s)", url.c_str());
CSWindow *window = new CSWindow(url.c_str());
window->Show(false);
retval = CefV8Value::CreateNull();
return true;
}
}
else if (name == "menu")
{
if (arguments.size() == 1)
{
retval = CSJsMenu::CreateMenu(arguments[0]->GetStringValue());
return true;
}
}
else if (name == "mainMenu")
{
retval = CSJsMenu::GetMainMenu();
return true;
}
return false;
}
