/* * tkMacOSXHLEvents.c -- * * Implements high level event support for the Macintosh. Currently, the * only event that really does anything is the Quit event. * * Copyright (c) 1995-1997 Sun Microsystems, Inc. * Copyright 2001, Apple Computer, Inc. * Copyright (c) 2006 Daniel A. Steffen * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * * RCS: @(#) $Id: tkMacOSXHLEvents.c,v 1.1 2009/06/26 01:42:47 das Exp $ */ #include "tkMacOSXPrivate.h" /* * This is a Tcl_Event structure that the Quit AppleEvent handler uses to * schedule the ReallyKillMe function. */ typedef struct KillEvent { Tcl_Event header; /* Information that is standard for all * events. */ Tcl_Interp *interp; /* Interp that was passed to the Quit * AppleEvent */ } KillEvent; /* * Static functions used only in this file. */ static OSErr QuitHandler(const AppleEvent *event, AppleEvent *reply, long handlerRefcon); static OSErr OappHandler(const AppleEvent *event, AppleEvent *reply, long handlerRefcon); static OSErr RappHandler(const AppleEvent *event, AppleEvent *reply, long handlerRefcon); static OSErr OdocHandler(const AppleEvent *event, AppleEvent *reply, long handlerRefcon); static OSErr PrintHandler(const AppleEvent *event, AppleEvent *reply, long handlerRefcon); static OSErr ScriptHandler(const AppleEvent *event, AppleEvent *reply, long handlerRefcon); static OSErr PrefsHandler(const AppleEvent *event, AppleEvent *reply, long handlerRefcon); static int MissedAnyParameters(const AppleEvent *theEvent); static int ReallyKillMe(Tcl_Event *eventPtr, int flags); static OSStatus FSRefToDString(const FSRef *fsref, Tcl_DString *ds); /* *---------------------------------------------------------------------- * * TkMacOSXInitAppleEvents -- * * Initilize the Apple Events on the Macintosh. This registers the core * event handlers. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ void TkMacOSXInitAppleEvents( Tcl_Interp *interp) /* Interp to handle basic events. */ { AEEventHandlerUPP OappHandlerUPP, RappHandlerUPP, OdocHandlerUPP; AEEventHandlerUPP PrintHandlerUPP, QuitHandlerUPP, ScriptHandlerUPP; AEEventHandlerUPP PrefsHandlerUPP; static Boolean initialized = FALSE; if (!initialized) { initialized = TRUE; /* * Install event handlers for the core apple events. */ QuitHandlerUPP = NewAEEventHandlerUPP(QuitHandler); ChkErr(AEInstallEventHandler, kCoreEventClass, kAEQuitApplication, QuitHandlerUPP, (long) interp, false); OappHandlerUPP = NewAEEventHandlerUPP(OappHandler); ChkErr(AEInstallEventHandler, kCoreEventClass, kAEOpenApplication, OappHandlerUPP, (long) interp, false); RappHandlerUPP = NewAEEventHandlerUPP(RappHandler); ChkErr(AEInstallEventHandler, kCoreEventClass, kAEReopenApplication, RappHandlerUPP, (long) interp, false); OdocHandlerUPP = NewAEEventHandlerUPP(OdocHandler); ChkErr(AEInstallEventHandler, kCoreEventClass, kAEOpenDocuments, OdocHandlerUPP, (long) interp, false); PrintHandlerUPP = NewAEEventHandlerUPP(PrintHandler); ChkErr(AEInstallEventHandler, kCoreEventClass, kAEPrintDocuments, PrintHandlerUPP, (long) interp, false); PrefsHandlerUPP = NewAEEventHandlerUPP(PrefsHandler); ChkErr(AEInstallEventHandler, kCoreEventClass, kAEShowPreferences, PrefsHandlerUPP, (long) interp, false); if (interp) { ScriptHandlerUPP = NewAEEventHandlerUPP(ScriptHandler); ChkErr(AEInstallEventHandler, kAEMiscStandards, kAEDoScript, ScriptHandlerUPP, (long) interp, false); } } } /* *---------------------------------------------------------------------- * * TkMacOSXDoHLEvent -- * * Dispatch incomming highlevel events. * * Results: * None. * * Side effects: * Depends on the incoming event. * *---------------------------------------------------------------------- */ int TkMacOSXDoHLEvent( EventRecord *theEvent) { return AEProcessAppleEvent(theEvent); } /* *---------------------------------------------------------------------- * * QuitHandler -- * * This is the 'quit' core Apple event handler. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static OSErr QuitHandler( const AppleEvent *event, AppleEvent *reply, long handlerRefcon) { Tcl_Interp *interp = (Tcl_Interp *) handlerRefcon; KillEvent *eventPtr; if (interp) { /* * Call the exit command from the event loop, since you are not * supposed to call ExitToShell in an Apple Event Handler. We put this * at the head of Tcl's event queue because this message usually comes * when the Mac is shutting down, and we want to kill the shell as * quickly as possible. */ eventPtr = (KillEvent *) ckalloc(sizeof(KillEvent)); eventPtr->header.proc = ReallyKillMe; eventPtr->interp = interp; Tcl_QueueEvent((Tcl_Event *) eventPtr, TCL_QUEUE_HEAD); } return noErr; } /* *---------------------------------------------------------------------- * * OappHandler -- * * This is the 'oapp' core Apple event handler. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static OSErr OappHandler( const AppleEvent *event, AppleEvent *reply, long handlerRefcon) { Tcl_CmdInfo dummy; Tcl_Interp *interp = (Tcl_Interp *) handlerRefcon; if (interp && Tcl_GetCommandInfo(interp, "::tk::mac::OpenApplication", &dummy)){ int code = Tcl_GlobalEval(interp, "::tk::mac::OpenApplication"); if (code != TCL_OK) { Tcl_BackgroundException(interp, code); } } return noErr; } /* *---------------------------------------------------------------------- * * RappHandler -- * * This is the 'rapp' core Apple event handler. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static OSErr RappHandler( const AppleEvent *event, AppleEvent *reply, long handlerRefcon) { Tcl_CmdInfo dummy; Tcl_Interp *interp = (Tcl_Interp *) handlerRefcon; ProcessSerialNumber thePSN = {0, kCurrentProcess}; OSStatus err = ChkErr(SetFrontProcess, &thePSN); if (interp && Tcl_GetCommandInfo(interp, "::tk::mac::ReopenApplication", &dummy)) { int code = Tcl_GlobalEval(interp, "::tk::mac::ReopenApplication"); if (code != TCL_OK){ Tcl_BackgroundException(interp, code); } } return err; } /* *---------------------------------------------------------------------- * * PrefsHandler -- * * This is the 'pref' core Apple event handler. Called when the user * selects 'Preferences...' in MacOS X * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static OSErr PrefsHandler( const AppleEvent *event, AppleEvent *reply, long handlerRefcon) { Tcl_CmdInfo dummy; Tcl_Interp *interp = (Tcl_Interp *) handlerRefcon; if (interp && Tcl_GetCommandInfo(interp, "::tk::mac::ShowPreferences", &dummy)){ int code = Tcl_GlobalEval(interp, "::tk::mac::ShowPreferences"); if (code != TCL_OK) { Tcl_BackgroundException(interp, code); } } return noErr; } /* *---------------------------------------------------------------------- * * OdocHandler -- * * This is the 'odoc' core Apple event handler. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static OSErr OdocHandler( const AppleEvent *event, AppleEvent *reply, long handlerRefcon) { Tcl_Interp *interp = (Tcl_Interp *) handlerRefcon; AEDescList fileSpecList; FSRef file; DescType type; Size actual; long count, index; AEKeyword keyword; Tcl_DString command, pathName; Tcl_CmdInfo dummy; int code; /* * Don't bother if we don't have an interp or the open document procedure * doesn't exist. */ if (!interp || !Tcl_GetCommandInfo(interp, "::tk::mac::OpenDocument", &dummy)) { return noErr; } /* * If we get any errors while retrieving our parameters we just return with * no error. */ if (ChkErr(AEGetParamDesc, event, keyDirectObject, typeAEList, &fileSpecList) != noErr) { return noErr; } if (MissedAnyParameters(event) != noErr) { return noErr; } if (ChkErr(AECountItems, &fileSpecList, &count) != noErr) { return noErr; } /* * Convert our parameters into a script to evaluate, skipping things that * we can't handle right. */ Tcl_DStringInit(&command); Tcl_DStringAppend(&command, "::tk::mac::OpenDocument", -1); for (index = 1; index <= count; index++) { if (ChkErr(AEGetNthPtr, &fileSpecList, index, typeFSRef, &keyword, &type, (Ptr) &file, sizeof(FSRef), &actual) != noErr) { continue; } if (ChkErr(FSRefToDString, &file, &pathName) == noErr) { Tcl_DStringAppendElement(&command, Tcl_DStringValue(&pathName)); Tcl_DStringFree(&pathName); } } /* * Now handle the event by evaluating a script. */ code = Tcl_EvalEx(interp, Tcl_DStringValue(&command), Tcl_DStringLength(&command), TCL_EVAL_GLOBAL); if (code != TCL_OK) { Tcl_BackgroundException(interp, code); } Tcl_DStringFree(&command); return noErr; } /* *---------------------------------------------------------------------- * * PrintHandler -- * * This is the 'pdoc' core Apple event handler. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static OSErr PrintHandler( const AppleEvent * event, AppleEvent * reply, long handlerRefcon) { Tcl_Interp *interp = (Tcl_Interp *) handlerRefcon; AEDescList fileSpecList; FSRef file; DescType type; Size actual; long count, index; AEKeyword keyword; Tcl_DString command, pathName; Tcl_CmdInfo dummy; int code; /* * Don't bother if we don't have an interp or the print document procedure * doesn't exist. */ if (!interp || !Tcl_GetCommandInfo(interp, "::tk::mac::PrintDocument", &dummy)) { return noErr; } /* * If we get any errors while retrieving our parameters we just return with * no error. */ if (ChkErr(AEGetParamDesc, event, keyDirectObject, typeAEList, &fileSpecList) != noErr) { return noErr; } if (ChkErr(MissedAnyParameters, event) != noErr) { return noErr; } if (ChkErr(AECountItems, &fileSpecList, &count) != noErr) { return noErr; } Tcl_DStringInit(&command); Tcl_DStringAppend(&command, "::tk::mac::PrintDocument", -1); for (index = 1; index <= count; index++) { if (ChkErr(AEGetNthPtr, &fileSpecList, index, typeFSRef, &keyword, &type, (Ptr) &file, sizeof(FSRef), &actual) != noErr) { continue; } if (ChkErr(FSRefToDString, &file, &pathName) == noErr) { Tcl_DStringAppendElement(&command, Tcl_DStringValue(&pathName)); Tcl_DStringFree(&pathName); } } /* * Now handle the event by evaluating a script. */ code = Tcl_EvalEx(interp, Tcl_DStringValue(&command), Tcl_DStringLength(&command), TCL_EVAL_GLOBAL); if (code != TCL_OK) { Tcl_BackgroundException(interp, code); } Tcl_DStringFree(&command); return noErr; } /* *---------------------------------------------------------------------- * * ScriptHandler -- * * This handler process the script event. * * Results: * Schedules the given event to be processed. * * Side effects: * None. * *---------------------------------------------------------------------- */ static OSErr ScriptHandler( const AppleEvent *event, AppleEvent *reply, long handlerRefcon) { OSStatus theErr; AEDescList theDesc; int tclErr = -1; Tcl_Interp *interp = (Tcl_Interp *) handlerRefcon; char errString[128]; /* * The do script event receives one parameter that should be data or a * file. */ theErr = AEGetParamDesc(event, keyDirectObject, typeWildCard, &theDesc); if (theErr != noErr) { sprintf(errString, "AEDoScriptHandler: GetParamDesc error %ld", theErr); theErr = AEPutParamPtr(reply, keyErrorString, typeChar, errString, strlen(errString)); } else if (MissedAnyParameters(event)) { /* * Return error if parameter is missing. */ sprintf(errString, "AEDoScriptHandler: extra parameters"); AEPutParamPtr(reply, keyErrorString, typeChar, errString, strlen(errString)); theErr = -1771; } else if (theDesc.descriptorType == (DescType) typeChar) { /* * We've had some data sent to us. Evaluate it. */ Tcl_DString encodedText; short i; Size size = AEGetDescDataSize(&theDesc); char *data = ckalloc(size + 1); AEGetDescData(&theDesc, data, size); data[size] = 0; for (i = 0; i < size; i++) { if (data[i] == '\r') { data[i] = '\n'; } } AEReplaceDescData(theDesc.descriptorType, data, size + 1, &theDesc); Tcl_ExternalToUtfDString(NULL, data, size, &encodedText); tclErr = Tcl_EvalEx(interp, Tcl_DStringValue(&encodedText), Tcl_DStringLength(&encodedText), TCL_EVAL_GLOBAL); Tcl_DStringFree(&encodedText); } else if (theDesc.descriptorType == (DescType) typeAlias) { /* * We've had a file sent to us. Source it. */ Boolean dummy; FSRef file; Size theSize = AEGetDescDataSize(&theDesc); AliasPtr alias = (AliasPtr) ckalloc(theSize); if (alias) { AEGetDescData(&theDesc, alias, theSize); theErr = FSResolveAlias(NULL, &alias, &file, &dummy); ckfree((char*)alias); } else { theErr = memFullErr; } if (theErr == noErr) { Tcl_DString scriptName; theErr = FSRefToDString(&file, &scriptName); if (theErr == noErr) { Tcl_EvalFile(interp, Tcl_DStringValue(&scriptName)); Tcl_DStringFree(&scriptName); } } else { sprintf(errString, "AEDoScriptHandler: file not found"); AEPutParamPtr(reply, keyErrorString, typeChar, errString, strlen(errString)); } } else { /* * Umm, don't recognize what we've got... */ sprintf(errString, "AEDoScriptHandler: invalid script type '%-4.4s'," " must be 'alis' or 'TEXT'", (char*) &theDesc.descriptorType); AEPutParamPtr(reply, keyErrorString, typeChar, errString, strlen(errString)); theErr = -1770; } /* * If we actually go to run Tcl code - put the result in the reply. */ if (tclErr >= 0) { int reslen; const char *result = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &reslen); if (tclErr == TCL_OK) { AEPutParamPtr(reply, keyDirectObject, typeChar, result, reslen); } else { AEPutParamPtr(reply, keyErrorString, typeChar, result, reslen); AEPutParamPtr(reply, keyErrorNumber, typeInteger, (Ptr) &tclErr, sizeof(int)); } } AEDisposeDesc(&theDesc); return theErr; } /* *---------------------------------------------------------------------- * * ReallyKillMe -- * * This proc tries to kill the shell by running exit, called from an * event scheduled by the "Quit" AppleEvent handler. * * Results: * Runs the "exit" command which might kill the shell. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int ReallyKillMe( Tcl_Event *eventPtr, int flags) { Tcl_Interp *interp = ((KillEvent *) eventPtr)->interp; Tcl_CmdInfo dummy; int quit = Tcl_GetCommandInfo(interp, "::tk::mac::Quit", &dummy); int code = Tcl_GlobalEval(interp, quit ? "::tk::mac::Quit" : "exit"); if (code != TCL_OK) { /* * Should be never reached... */ Tcl_BackgroundException(interp, code); } return 1; } /* *---------------------------------------------------------------------- * * MissedAnyParameters -- * * Checks to see if parameters are still left in the event. * * Results: * True or false. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int MissedAnyParameters( const AppleEvent *theEvent) { DescType returnedType; Size actualSize; OSStatus err; err = ChkErr(AEGetAttributePtr, theEvent, keyMissedKeywordAttr, typeWildCard, &returnedType, NULL, 0, &actualSize); return (err != errAEDescNotFound); } /* *---------------------------------------------------------------------- * * FSRefToDString -- * * Get a POSIX path from an FSRef. * * Results: * In the parameter ds. * * Side effects: * None. * *---------------------------------------------------------------------- */ static OSStatus FSRefToDString( const FSRef *fsref, Tcl_DString *ds) { UInt8 fileName[PATH_MAX+1]; OSStatus err; err = ChkErr(FSRefMakePath, fsref, fileName, sizeof(fileName)); if (err == noErr) { Tcl_ExternalToUtfDString(NULL, (char*) fileName, -1, ds); } return err; } /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */