tkMacOSXHLEvents.c
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- /*
- * 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 <das@users.sourceforge.net>
- *
- * 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 1.5.2.11 2007/06/29 03:22:02 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,
- PrintHandlerUPP, QuitHandlerUPP, ScriptHandlerUPP, 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.
- *
- *----------------------------------------------------------------------
- */
- 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.
- *
- *----------------------------------------------------------------------
- */
- 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)) {
- Tcl_GlobalEval(interp, "::tk::mac::OpenApplication");
- }
- return noErr;
- }
- /*
- *----------------------------------------------------------------------
- *
- * RappHandler --
- *
- * This is the 'rapp' core Apple event handler.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- 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)) {
- Tcl_GlobalEval(interp, "::tk::mac::ReopenApplication");
- }
- 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.
- *
- *----------------------------------------------------------------------
- */
- 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)) {
- Tcl_GlobalEval(interp, "::tk::mac::ShowPreferences");
- }
- return noErr;
- }
- /*
- *----------------------------------------------------------------------
- *
- * OdocHandler --
- *
- * This is the 'odoc' core Apple event handler.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- OSErr
- OdocHandler(
- const AppleEvent * event,
- AppleEvent * reply,
- long handlerRefcon)
- {
- Tcl_Interp *interp = (Tcl_Interp *) handlerRefcon;
- AEDescList fileSpecList;
- FSRef file;
- OSStatus err;
- DescType type;
- Size actual;
- long count;
- AEKeyword keyword;
- long index;
- Tcl_DString command;
- Tcl_DString pathName;
- Tcl_CmdInfo dummy;
- /*
- * Don't bother if we don't have an interp or
- * the open document procedure doesn't exist.
- */
- if ((interp == NULL) ||
- (Tcl_GetCommandInfo(interp, "::tk::mac::OpenDocument", &dummy)) == 0) {
- return noErr;
- }
- /*
- * If we get any errors wil retrieving our parameters
- * we just return with no error.
- */
- err = ChkErr(AEGetParamDesc, event, keyDirectObject, typeAEList,
- &fileSpecList);
- if (err != noErr) {
- return noErr;
- }
- err = MissedAnyParameters(event);
- if (err != noErr) {
- return noErr;
- }
- err = ChkErr(AECountItems, &fileSpecList, &count);
- if (err != noErr) {
- return noErr;
- }
- Tcl_DStringInit(&command);
- Tcl_DStringAppend(&command, "::tk::mac::OpenDocument", -1);
- for (index = 1; index <= count; index++) {
- err = ChkErr(AEGetNthPtr, &fileSpecList, index, typeFSRef,
- &keyword, &type, (Ptr) &file, sizeof(FSRef), &actual);
- if ( err != noErr ) {
- continue;
- }
- err = ChkErr(FSRefToDString, &file, &pathName);
- if (err == noErr) {
- Tcl_DStringAppendElement(&command, Tcl_DStringValue(&pathName));
- Tcl_DStringFree(&pathName);
- }
- }
- Tcl_EvalEx(interp, Tcl_DStringValue(&command), Tcl_DStringLength(&command),
- TCL_EVAL_GLOBAL);
- Tcl_DStringFree(&command);
- return noErr;
- }
- /*
- *----------------------------------------------------------------------
- *
- * PrintHandler --
- *
- * This is the 'pdoc' core Apple event handler.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- OSErr
- PrintHandler(
- const AppleEvent * event,
- AppleEvent * reply,
- long handlerRefcon)
- {
- Tcl_Interp *interp = (Tcl_Interp *) handlerRefcon;
- AEDescList fileSpecList;
- FSRef file;
- OSStatus err;
- DescType type;
- Size actual;
- long count;
- AEKeyword keyword;
- long index;
- Tcl_DString command;
- Tcl_DString pathName;
- Tcl_CmdInfo dummy;
- /*
- * Don't bother if we don't have an interp or
- * the print document procedure doesn't exist.
- */
- if ((interp == NULL) ||
- (Tcl_GetCommandInfo(interp, "::tk::mac::PrintDocument", &dummy)) == 0) {
- return noErr;
- }
- /*
- * If we get any errors wil retrieving our parameters
- * we just return with no error.
- */
- err = ChkErr(AEGetParamDesc, event, keyDirectObject, typeAEList,
- &fileSpecList);
- if (err != noErr) {
- return noErr;
- }
- err = ChkErr(MissedAnyParameters, event);
- if (err != noErr) {
- return noErr;
- }
- err = ChkErr(AECountItems, &fileSpecList, &count);
- if (err != noErr) {
- return noErr;
- }
- Tcl_DStringInit(&command);
- Tcl_DStringAppend(&command, "::tk::mac::PrintDocument", -1);
- for (index = 1; index <= count; index++) {
- err = ChkErr(AEGetNthPtr, &fileSpecList, index, typeFSRef, &keyword,
- &type, (Ptr) &file, sizeof(FSRef), &actual);
- if ( err != noErr ) {
- continue;
- }
- err = ChkErr(FSRefToDString, &file, &pathName);
- if (err == noErr) {
- Tcl_DStringAppendElement(&command, Tcl_DStringValue(&pathName));
- Tcl_DStringFree(&pathName);
- }
- }
- Tcl_EvalEx(interp, Tcl_DStringValue(&command), Tcl_DStringLength(&command),
- TCL_EVAL_GLOBAL);
- Tcl_DStringFree(&command);
- return noErr;
- }
- /*
- *----------------------------------------------------------------------
- *
- * ScriptHandler --
- *
- * This handler process the script event.
- *
- * Results:
- * Schedules the given event to be processed.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- OSErr
- ScriptHandler(
- const AppleEvent * event,
- AppleEvent * reply,
- long handlerRefcon)
- {
- OSStatus theErr;
- AEDescList theDesc;
- int tclErr = -1;
- Tcl_Interp *interp;
- char errString[128];
- interp = (Tcl_Interp *) handlerRefcon;
- /*
- * 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)) {
- sprintf(errString, "AEDoScriptHandler: extra parameters");
- AEPutParamPtr(reply, keyErrorString, typeChar, errString,
- strlen(errString));
- theErr = -1771;
- } else {
- if (theDesc.descriptorType == (DescType)typeChar) {
- Tcl_DString encodedText;
- short i;
- Size size;
- char * data;
- size = AEGetDescDataSize(&theDesc);
- data = (char *)ckalloc(size + 1);
- if ( !data ) {
- theErr = -1771;
- }
- else {
- 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) {
- Boolean dummy;
- FSRef file;
- AliasPtr alias;
- Size theSize;
- theSize = AEGetDescDataSize(&theDesc);
- 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 {
- 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) {
- if (tclErr == TCL_OK) {
- AEPutParamPtr(reply, keyDirectObject, typeChar,
- Tcl_GetStringResult(interp),
- strlen(Tcl_GetStringResult(interp)));
- } else {
- AEPutParamPtr(reply, keyErrorString, typeChar,
- Tcl_GetStringResult(interp),
- strlen(Tcl_GetStringResult(interp)));
- 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;
- if (Tcl_GetCommandInfo(interp, "::tk::mac::Quit", &dummy)) {
- Tcl_GlobalEval(interp, "::tk::mac::Quit");
- } else {
- Tcl_GlobalEval(interp, "exit");
- }
- return 1;
- }
- /*
- *----------------------------------------------------------------------
- *
- * MissedAnyParameters --
- *
- * Checks to see if parameters are still left in the event.
- *
- * Results:
- * True or false.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- 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.
- *
- *----------------------------------------------------------------------
- */
- 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;
- }