/*

File: ExamplePrefs.c

Abstract: Demo program showing how the custom Icon Data Browser might be used in 

          creating a Preferences window/dialog.

Version: 5.0

Change History:

    <5.0>   removed GetWindowDeviceDepthAndColor

    <4.0>   removed all Classic code

            removed handleEvents and doIdleProcessing

            made HandleMenuChoice an internal function, changed the 

            name to handleCommand, and stopped explicitly handling 

            the kHICommandClose command

            removed RunningInMacOSX and gMacOSX; now that we're 

            using Mach-O for Mac OS X and PEF for Mac OS 8/9 

            exclusively we can determine the environment at compile 

            time

            changed the finalization section to send a 

            kHICommandClose command to close the prefs window

    <3.0>   converted to RunApplicationEventLoop for Carbon

            much of this file has been separated into Classic and 

            Carbon code

            added appEventHandler to support Carbon Events

    <2.0>   Carbonized

            added RunningInMacOSX to support the Aqua appearance

    <1.0>   first release version, this is totally Mac OS 8.6-savvy

            it's kind of cheating but we decided to use Carbon Event 

            HI Command IDs even though we're not using Carbon Events 

            (or Carbon for that matter)

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*/

#include "ExamplePrefs.h"

#include "IconDBUtilities.h"

#include "PrefsDialog.h"

#include "PrefsWindow.h"

static AEEventHandlerUPP gOpenAppAEHandler;

static AEEventHandlerUPP gQuitAppAEHandler;

static AEEventHandlerUPP gViewsFontChangedAEHandler;

static EventHandlerUPP gAppEventHandler;

static void initialize(void);

static pascal OSStatus appEventHandler(EventHandlerCallRef nextHandler, EventRef event, 

                                        void *junk);

static OSStatus handleCommand(HICommand command);

static pascal OSErr openApplicationAEHandler(const AppleEvent *appleEvent, AppleEvent *reply, 

                                                long refcon);

static pascal OSErr quitApplicationAEHandler(const AppleEvent *appleEvent, AppleEvent *reply, 

                                                long refcon);

static pascal OSErr viewsFontChangedAEHandler(const AppleEvent *appleEvent, AppleEvent *reply, 

                                                long refcon);

// --------------------------------------------------------------------------------------

int main(void)

{

    WindowRef window;

    initialize();       // initialization

    RunApplicationEventLoop();      // application event loop

                                    // finalization

    for (window = FrontNonFloatingWindow(); window != NULL; window = FrontNonFloatingWindow())

    {

        if (GetWindowKind(window) == kDialogWindowKind)

            ClosePrefsDialog(GetDialogFromWindow(window));

        else    // kApplicationWindowKind

        {

            HICommand closeCommand;

            closeCommand.attributes = 0;    // not from a menu, control, or window

            closeCommand.commandID = kHICommandClose;

            ProcessHICommand(&closeCommand);

        }

    }

    DisposeAEEventHandlerUPP(gOpenAppAEHandler);

    DisposeAEEventHandlerUPP(gQuitAppAEHandler);

    DisposeAEEventHandlerUPP(gViewsFontChangedAEHandler);

    DisposeEventHandlerUPP(gAppEventHandler);

    return 0;

}

// --------------------------------------------------------------------------------------

static void initialize(void)

{

    MenuBarHandle menuBar;

    OSErr error;

        /* I doubt we actually need any extra master pointers but I left the call here 

           as a reminder for where it belongs if it is needed. */

    MoreMasterPointers(64);     // each call to MoreMasters allocates 64 master pointers

    InitCursor();

    RegisterAppearanceClient();

    menuBar = GetNewMBar(rMenuBar);     // draw the menu bar as soon as possible

    if (menuBar == NULL)

        ExitToShell();

    SetMenuBar(menuBar);

    DrawMenuBar();

        // do non time sensitive initialization after we get the application event loop going

    gOpenAppAEHandler = NewAEEventHandlerUPP(openApplicationAEHandler);

    error = AEInstallEventHandler(kCoreEventClass, kAEOpenApplication, gOpenAppAEHandler, 0, 

                                    false);

    if (error != noErr)

        ExitToShell();

        /* If we supported them, we would install open documents and print documents 

           handlers here and we would do most of the same initialization stuff that 

           we do in the open application handler. */

}

// --------------------------------------------------------------------------------------

static pascal OSStatus appEventHandler(EventHandlerCallRef nextHandler, EventRef event, 

                                        void *junk)

{

#pragma unused (nextHandler, junk)

    OSStatus result = eventNotHandledErr;

    UInt32 eventClass, eventKind;

    HICommand command;

    eventClass = GetEventClass(event);

    eventKind = GetEventKind(event);

    switch (eventClass)

    {

        case kEventClassCommand:

            switch (eventKind)

            {

                case kEventCommandProcess:

                    GetEventParameter(event, kEventParamDirectObject, typeHICommand, NULL, 

                                        sizeof(HICommand), NULL, &command);

                    result = handleCommand(command);

                    break;

            }

            break;

    }

    return result;

}

// --------------------------------------------------------------------------------------

OSStatus handleCommand(HICommand command)

{

    OSStatus result = eventNotHandledErr;

    switch (command.commandID)

    {

            /* Note that we're not handling the Quit HI Command here.  Instead we let 

               the default handler process it which sends us a Quit Application Apple 

               Event, which we are "required" to handle anyways.  Similarly we are 

               letting the default handler process the Close HI Command which sends a 

               close window Carbon Event to the appropriate window. */

        case kHICommandAbout:

            SysBeep(30);

            result = noErr;

            break;

        case kCommandPrWin:

            OpenPrefsWindow();

            result = noErr;

            break;

        case kCommandPrDlg:

            OpenPrefsDialog();

            result = noErr;

            break;

        default:    // there isn't a recognized command ID; see if it's a menu item we know

            if ((command.attributes & kHICommandFromMenu) != 0)

            {

                MenuID menuID;

                menuID = GetMenuID(command.menu.menuRef);

                switch (menuID)

                {               // all of our menu items have commands but if they didn't we 

                }               // would further switch on command.menu.menuItemIndex

            }

    }

    return result;

}

#pragma mark -

// --------------------------------------------------------------------------------------

static pascal OSErr openApplicationAEHandler(const AppleEvent *appleEvent, AppleEvent *reply, 

                                                long refcon)

{

    OSErr error;

    DescType returnedType;

    Size actualSize;

    error = AEGetAttributePtr(appleEvent, keyMissedKeywordAttr, typeWildCard, &returnedType,

                                NULL, 0, &actualSize);

    if (error == noErr)

        error = errAEParamMissed;

    else if (error == errAEDescNotFound)

    {

        MenuRef menu;

        CFStringRef aboutString;

        EventTypeSpec applicationEvents[] = {

                                                {kEventClassCommand, kEventCommandProcess}

                                            };

            /* For our program running in Carbon, a Quit Application Apple Event handler 

               is unnecessary because RunApplicationEventLoop installs one for us that 

               calls QuitApplicationEventLoop.  However we will leave ours here in case 

               we ever need it to do something different so that we know where it 

               belongs. */

        gQuitAppAEHandler = NewAEEventHandlerUPP(quitApplicationAEHandler);

        error = AEInstallEventHandler(kCoreEventClass, kAEQuitApplication, gQuitAppAEHandler, 

                                        0, false);

        if (error != noErr)     // if we can't allow the user a mechanism to quit

        {                       // we'd better just quit right now

            DisposeAEEventHandlerUPP(gOpenAppAEHandler);

            DisposeAEEventHandlerUPP(gQuitAppAEHandler);

            ExitToShell();

        }

        gViewsFontChangedAEHandler = NewAEEventHandlerUPP(viewsFontChangedAEHandler);

        error = AEInstallEventHandler(kAppearanceEventClass, kAEViewsFontChanged, 

                                        gViewsFontChangedAEHandler, 0, false);

#if TARGET_API_MAC_OSX

#pragma unused (reply, refcon)

        menu = GetMenuRef(mAppleApplication);

        aboutString = CFCopyLocalizedString(CFSTR("About Item"), NULL);

        SetMenuItemTextWithCFString(menu, iAbout, aboutString);     // get rid of the "..."

        CFRelease(aboutString);                                 // if we're running in OS X

        menu = GetMenuRef(mFile);

        ChangeMenuAttributes(menu, kMenuAttrAutoDisable, 0);

        DeleteMenuItem(menu, iQuit);                // remove the Quit item and separator

        DeleteMenuItem(menu, iQuitSeparator);       // if we're running in OS X

#else

#pragma unused (reply, refcon, menu, aboutString)

#endif

        gAppEventHandler = NewEventHandlerUPP(appEventHandler);

        InstallApplicationEventHandler(gAppEventHandler, GetEventTypeCount(applicationEvents), 

                                        applicationEvents, NULL, NULL);

        InitIconDataBrowser();

        error = noErr;

    }

    return error;

}

// --------------------------------------------------------------------------------------

static pascal OSErr quitApplicationAEHandler(const AppleEvent *appleEvent, AppleEvent *reply, 

                                                long refcon)

{

#pragma unused (reply, refcon)

    OSErr error;

    DescType returnedType;

    Size actualSize;

    error = AEGetAttributePtr(appleEvent, keyMissedKeywordAttr, typeWildCard, &returnedType, 

                                NULL, 0, &actualSize);

    if (error == noErr)

        error = errAEParamMissed;

    else if (error == errAEDescNotFound)

    {

        QuitApplicationEventLoop();

        error = noErr;

    } 

    return error;

}

// --------------------------------------------------------------------------------------

static pascal OSErr viewsFontChangedAEHandler(const AppleEvent *appleEvent, AppleEvent *reply, 

                                                long refcon)

{

#pragma unused (reply, refcon)

    OSErr error;

    DescType returnedType;

    Size actualSize;

    error = AEGetAttributePtr(appleEvent, keyMissedKeywordAttr, typeWildCard, &returnedType, 

                                NULL, 0, &actualSize);

    if (error == noErr)

        error = errAEParamMissed;

    else if (error == errAEDescNotFound)

    {

        WindowRef window;

        for (window = GetFrontWindowOfClass(kDocumentWindowClass, false); window != NULL; 

                window = GetNextWindowOfClass(window, kDocumentWindowClass, false))

        {

            if (GetWindowKind(window) == kDialogWindowKind)

                RedrawPrefsDialogDataBrowser(GetDialogFromWindow(window));

            else    // kApplicationWindowKind

                RedrawPrefsWindowDataBrowser(window);

        }

        error = noErr;

    } 

    return error;

}