How to Call an Application with Parameters in NPAPI for Mac - npapi

Question

I try to create a simple NPAPI which passes an URL to Safari.
plugin_invoke method is below:
bool plugin_invoke(NPObject *obj, NPIdentifier methodName, const NPVariant *args, uint32_t argCount, NPVariant *result) {
// Make sure the method called is "open".
NPUTF8 *name = npnfuncs->utf8fromidentifier(methodName);
if(strcmp(name, plugin_method_name_open) == 0) {
npnfuncs->memfree(name);
BOOLEAN_TO_NPVARIANT(false, *result);
// Meke sure the arugment has at least one String parameter.
if(argCount > 0 && NPVARIANT_IS_STRING(args[0])) {
// Build CFURL object from the arugment.
NPString str = NPVARIANT_TO_STRING(args[0]);
CFURLRef url = CFURLCreateWithBytes(NULL, (const UInt8 *)str.UTF8Characters, str.UTF8Length, kCFStringEncodingUTF8, NULL);
if(url) {
// Open URL with the default application by Launch Service.
//OSStatus res = LSOpenCFURLRef(url, NULL);
//CFRelease(url);
OSStatus resultt = eventNotHandledErr;
//FSRef appRef;
FSRef appRef = {0};
Boolean isDir =true;
resultt = FSPathMakeRef((UInt8 *) "/Applications/Safari.app", &appRef,
&isDir);
LSApplicationParameters appParams = {0, kLSLaunchDefaults};
appParams.application = &appRef;
appParams.version = 0;
appParams.flags = kLSLaunchDefaults;
resultt = LSOpenApplication(&appParams, NULL);
BOOLEAN_TO_NPVARIANT(resultt == noErr, *result);
}
}
return true;
}
npnfuncs->memfree(name);
return false;
}
Currently it just invokes Safari but URL can not be passed.
How can I pass an example URL to the Safari in NPAPI? I read LSOpenFromURLSpec might work but I could not create the code.

Answer 1

Read the documentation for Launch Services, especially LSOpenURLsWithRole.
FYI, nothing about your question is NPAPI-specific, it's just about launching a Mac application from another process. In general you'll get more answers if you don't post general questions as NPAPI questions, since way more people know the answers to general Mac questions than to NPAPI-specific questions.