/*

HIToolboxSOU-Delegates

File: main.c

Abstract:

    This project is a demo of the HIObject Delegate API discussed in WWDC 2006 session 105, HIToolbox State of the Union.

    The only addition to this source file for the demo is located in the HandleNew function; look there for a sample of

    creating and adding an HIObject delegate.

Version: 1.0

Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple

Computer, Inc. ("Apple") in consideration of your agreement to the

following terms, and your use, installation, modification or

redistribution of this Apple software constitutes acceptance of these

terms.  If you do not agree with these terms, please do not use,

install, modify or redistribute this Apple software.

In consideration of your agreement to abide by the following terms, and

subject to these terms, Apple grants you a personal, non-exclusive

license, under Apple's copyrights in this original Apple software (the

"Apple Software"), to use, reproduce, modify and redistribute the Apple

Software, with or without modifications, in source and/or binary forms;

provided that if you redistribute the Apple Software in its entirety and

without modifications, you must retain this notice and the following

text and disclaimers in all such redistributions of the Apple Software. 

Neither the name, trademarks, service marks or logos of Apple Computer,

Inc. may be used to endorse or promote products derived from the Apple

Software without specific prior written permission from Apple.  Except

as expressly stated in this notice, no other rights or licenses, express

or implied, are granted by Apple herein, including but not limited to

any patent rights that may be infringed by your derivative works or by

other works in which the Apple Software may be incorporated.

The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS

FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND

OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.

IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL

OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,

MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED

AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),

STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE

POSSIBILITY OF SUCH DAMAGE.

Copyright © 2006 Apple Computer, Inc., All Rights Reserved

*/

#include <Carbon/Carbon.h>

static OSStatus        AppEventHandler( EventHandlerCallRef inCaller, EventRef inEvent, void* inRefcon );

static OSStatus        HandleNew();

static OSStatus        WindowEventHandler( EventHandlerCallRef inCaller, EventRef inEvent, void* inRefcon );

static IBNibRef        sNibRef;

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

int main(int argc, char* argv[])

{

    OSStatus                    err;

    static const EventTypeSpec    kAppEvents[] =

    {

        { kEventClassCommand, kEventCommandProcess }

    };

    // Create a Nib reference, passing the name of the nib file (without the .nib extension).

    // CreateNibReference only searches into the application bundle.

    err = CreateNibReference( CFSTR("main"), &sNibRef );

    require_noerr( err, CantGetNibRef );

    // Once the nib reference is created, set the menu bar. "MainMenu" is the name of the menu bar

    // object. This name is set in InterfaceBuilder when the nib is created.

    err = SetMenuBarFromNib( sNibRef, CFSTR("MenuBar") );

    require_noerr( err, CantSetMenuBar );

    // Install our handler for common commands on the application target

    InstallApplicationEventHandler( NewEventHandlerUPP( AppEventHandler ),

                                    GetEventTypeCount( kAppEvents ), kAppEvents,

                                    0, NULL );

    // Create a new window. A full-fledged application would do this from an AppleEvent handler

    // for kAEOpenApplication.

    HandleNew();

    // Run the event loop

    RunApplicationEventLoop();

CantSetMenuBar:

CantGetNibRef:

    return err;

}

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

static OSStatus

AppEventHandler( EventHandlerCallRef inCaller, EventRef inEvent, void* inRefcon )

{

    OSStatus    result = eventNotHandledErr;

    switch ( GetEventClass( inEvent ) )

    {

        case kEventClassCommand:

        {

            HICommandExtended cmd;

            verify_noerr( GetEventParameter( inEvent, kEventParamDirectObject, typeHICommand, NULL, sizeof( cmd ), NULL, &cmd ) );

            switch ( GetEventKind( inEvent ) )

            {

                case kEventCommandProcess:

                    switch ( cmd.commandID )

                    {

                        case kHICommandNew:

                            result = HandleNew();

                            break;

                        // Add your own command-handling cases here

                        default:

                            break;

                    }

                    break;

            }

            break;

        }

        default:

            break;

    }

    return result;

}

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

DEFINE_ONE_SHOT_HANDLER_GETTER( WindowEventHandler )

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

static OSStatus

HandleNew()

{

    OSStatus                    err;

    WindowRef                    window;

    HIViewID                    viewID;

    HIViewRef                   view;

    HIObjectRef                 delegate;

    static const EventTypeSpec    kWindowEvents[] =

    {

        { kEventClassCommand, kEventCommandProcess }

    };

    // Create a window. "MainWindow" is the name of the window object. This name is set in 

    // InterfaceBuilder when the nib is created.

    err = CreateWindowFromNib( sNibRef, CFSTR("MainWindow"), &window );

    require_noerr( err, CantCreateWindow );

    // Install a command handler on the window. We don't use this handler yet, but nearly all

    // Carbon apps will need to handle commands, so this saves everyone a little typing.

    InstallWindowEventHandler( window, GetWindowEventHandlerUPP(),

                               GetEventTypeCount( kWindowEvents ), kWindowEvents,

                               window, NULL );

/*-------- HIObject Delegates in Mac OS X 10.5 --------*/

    // locate the edit text field

    viewID.signature = 'NUMB';

    viewID.id = 0;

    HIViewFindByID( HIViewGetRoot( window ), viewID, &view );

    // create a delegate that filters text input using an NSNumberFormatter

    HIObjectCreate( CFSTR("com.apple.appobjects.HINumericTextFilter"), NULL, &delegate );

    // add the delegate to the text field

    HIObjectAddDelegate( (HIObjectRef) view, delegate, kHIDelegateBefore );

    // the text field retains the delegate, so we can release it now

    CFRelease( delegate );

/*-------- End HIObject Delegates --------*/

    // The window was created hidden, so show it

    ShowWindow( window );

CantCreateWindow:

    return err;

}

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

static OSStatus

WindowEventHandler( EventHandlerCallRef inCaller, EventRef inEvent, void* inRefcon )

{

    OSStatus    err = eventNotHandledErr;

    switch ( GetEventClass( inEvent ) )

    {

        case kEventClassCommand:

        {

            HICommandExtended cmd;

            verify_noerr( GetEventParameter( inEvent, kEventParamDirectObject, typeHICommand, NULL, sizeof( cmd ), NULL, &cmd ) );

            switch ( GetEventKind( inEvent ) )

            {

                case kEventCommandProcess:

                    switch ( cmd.commandID )

                    {

                        // Add your own command-handling cases here

                        default:

                            break;

                    }

                    break;

            }

            break;

        }

        default:

            break;

    }

    return err;

}