bool CMainFrame::ShowHtmlHelp()
{
App appType( AppDeltaview );
HelpSystem helpSys( appType );
long lHelpID = helpSys.GetProductHelpID( HIDC_DV_MINI_PANE );
return GetApp()->DisplayHtmlHelp(lHelpID);
}
status_t
retrieve_preferred_app(BMessage* message, bool sameAs, const char* forType,
BString& preferredApp)
{
entry_ref ref;
if (message == NULL || message->FindRef("refs", &ref) != B_OK)
return B_BAD_VALUE;
BFile file(&ref, B_READ_ONLY);
status_t status = file.InitCheck();
char preferred[B_MIME_TYPE_LENGTH];
if (status == B_OK) {
if (sameAs) {
// get preferred app from file
BNodeInfo nodeInfo(&file);
status = nodeInfo.InitCheck();
if (status == B_OK) {
if (nodeInfo.GetPreferredApp(preferred) != B_OK)
preferred[0] = '\0';
if (!preferred[0]) {
// get MIME type from file
char type[B_MIME_TYPE_LENGTH];
if (nodeInfo.GetType(type) == B_OK) {
BMimeType mimeType(type);
mimeType.GetPreferredApp(preferred);
}
}
}
} else {
// get application signature
BAppFileInfo appInfo(&file);
status = appInfo.InitCheck();
if (status == B_OK && appInfo.GetSignature(preferred) != B_OK)
preferred[0] = '\0';
}
}
if (status != B_OK) {
error_alert(B_TRANSLATE("File could not be opened"),
status, B_STOP_ALERT);
return status;
}
if (!preferred[0]) {
error_alert(sameAs
? B_TRANSLATE("Could not retrieve preferred application of this "
"file")
: B_TRANSLATE("Could not retrieve application signature"));
return B_ERROR;
}
// Check if the application chosen supports this type
BMimeType mimeType(forType);
bool found = false;
BMessage applications;
if (mimeType.GetSupportingApps(&applications) == B_OK
&& is_application_in_message(applications, preferred))
found = true;
applications.MakeEmpty();
if (!found && mimeType.GetWildcardApps(&applications) == B_OK
&& is_application_in_message(applications, preferred))
found = true;
if (!found) {
// warn user
BMimeType appType(preferred);
char description[B_MIME_TYPE_LENGTH];
if (appType.GetShortDescription(description) != B_OK)
description[0] = '\0';
char warning[512];
snprintf(warning, sizeof(warning), B_TRANSLATE("The application "
"\"%s\" does not support this file type.\n"
"Are you sure you want to set it anyway?"),
description[0] ? description : preferred);
BAlert* alert = new BAlert(B_TRANSLATE("FileTypes request"), warning,
B_TRANSLATE("Set Preferred Application"), B_TRANSLATE("Cancel"),
NULL, B_WIDTH_AS_USUAL, B_WARNING_ALERT);
if (alert->Go() == 1)
return B_ERROR;
}
preferredApp = preferred;
return B_OK;
}