/*

File: PrefsDialog.c

Abstract: Handles all Dialog related functions for the Demo.

Version: 4.0

Change History:

    <4.0>   removed all Classic code

            removed HandleDialogEvents and dialogFilter

            adjusted the RunningInMacOSX dependent stuff

    <3.0>   converted the Carbon version to use Carbon Events and 

            standard handlers

            added dialogEventHandler and listBoxControlEventHandler 

            to support Carbon Events

            the Carbon Event model doesn't mix all that well with 

            the Dialog Manager, as a workaround we gave the controls 

            Control IDs that match their Dialog Item IDs

    <2.0>   Carbonized

            we have to register our list definition procedure in 

            Carbon because code resources are unsupported

            also we have to flush the QuickDraw port after our calls 

            to HiliteControl

    <1.0>   first release version

© Copyright 2005 Apple Computer, Inc. All rights reserved.

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.

*/

#include "ExamplePrefs.h"

#include "Help.h"

#include "IconListDef.h"

#include "IconListUtilities.h"

#include "PrefsDialog.h"

static short gPanelNumber;

static EventHandlerUPP gDialogEventHandler;

static EventHandlerUPP gListBoxControlEventHandler;

static pascal OSStatus dialogEventHandler(EventHandlerCallRef nextHandler, EventRef event, 

                                            void *prefsDialog);

static pascal OSStatus listBoxControlEventHandler(EventHandlerCallRef nextHandler, 

                                                    EventRef event, void *prefsDialog);

static void handleDialogItemHit(DialogRef prefsDialog, DialogItemIndex itemHit);

static void changePanel(DialogRef dialog, short newPanel);

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

void  OpenPrefsDialog(void)

{

    ListDefSpec listSpec;

    DialogRef dialog;

    WindowRef dialogWindow;

    EventTypeSpec dialogEvents[] = {

                                    {kEventClassControl, kEventControlHit}

                                   };

    ControlID controlID = {kAppSignature, 0};

    ControlRef control;

    EventTypeSpec listBoxControlEvents[] = {

                                            {kEventClassTextInput, 

                                                kEventTextInputUnicodeForKeyEvent}

                                           };

    ListHandle iconList;

    Cell theCell;

    listSpec.defType = kListDefUserProcType;

    listSpec.u.userProc = NewListDefUPP(IconListDef);   // this is automatically disposed 

                                                        // when the program exits

    RegisterListDefinition(kIconListLDEF, &listSpec);

    dialog = GetNewDialog(rPrefsDialog, NULL, kFirstWindowOfClass);

    if (dialog == NULL)

        ExitToShell();

    SetPortDialogPort(dialog);

    dialogWindow = GetDialogWindow(dialog);

                                                                // install window handlers

    ChangeWindowAttributes(dialogWindow, kWindowStandardHandlerAttribute, kWindowNoAttributes);

    gDialogEventHandler = NewEventHandlerUPP(dialogEventHandler);

    InstallWindowEventHandler(dialogWindow, gDialogEventHandler, 

                                GetEventTypeCount(dialogEvents), dialogEvents, (void *)dialog, 

                                NULL);

    GetDialogItemAsControl(dialog, kStdOkItemIndex, &control);      // set control IDs to 

    controlID.id = kStdOkItemIndex;                                 // match dialog item 

    SetControlID(control, &controlID);                              // indices which are 

    SetWindowDefaultButton(dialogWindow, control);                  // not tracked by any 

                                                                    // standard handlers

    GetDialogItemAsControl(dialog, kStdCancelItemIndex, &control);  // also set the default 

    controlID.id = kStdCancelItemIndex;             // and cancel buttons (because Mac OS 8/9 

    SetControlID(control, &controlID);              // under CarbonLib doesn't respect the 

    SetWindowCancelButton(dialogWindow, control);   // dialog's default and cancel buttons)

    GetDialogItemAsControl(dialog, iIconList, &control);

    controlID.id = iIconList;

    SetControlID(control, &controlID);

        /* We need to postprocess keyboard events on the icon list so that we can change 

           panels after the user changes the selected cell by using the keyboard. */

    gListBoxControlEventHandler = NewEventHandlerUPP(listBoxControlEventHandler);

    InstallControlEventHandler(control, gListBoxControlEventHandler, 

                                GetEventTypeCount(listBoxControlEvents), listBoxControlEvents, 

                                (void *)dialog, NULL);

    GetControlData(control, kControlEntireControl, kControlListBoxListHandleTag, 

                    sizeof(ListHandle), &iconList, NULL);

    AddRowsAndDataToIconList(iconList, rIconListIconBaseID);

    SetListSelectionFlags(iconList, lOnlyOne);

    SetPt(&theCell, 0, 0);

    LSetSelect(true, theCell, iconList);

    SetKeyboardFocus(dialogWindow, control, kControlFocusNextPart);

    gPanelNumber = 0;

    SetPrefsDialogHelpTags(dialog);

    DisableMenuItem(GetMenuRef(mDemonstration), iPrefsDialog);

    ShowWindow(dialogWindow);

} // OpenPrefsDialog

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

void ClosePrefsDialog(DialogRef prefsDialog)

{

    ControlRef listBoxControl;

    ListHandle iconList;

    HideWindow(GetDialogWindow(prefsDialog));

    GetDialogItemAsControl(prefsDialog, iIconList, &listBoxControl);

    GetControlData(listBoxControl, kControlEntireControl, kControlListBoxListHandleTag, 

                    sizeof(ListHandle), &iconList, NULL);

    ReleaseIconListIcons(iconList);

    DisposeEventHandlerUPP(gDialogEventHandler);

    DisposeEventHandlerUPP(gListBoxControlEventHandler);

    RegisterListDefinition(kIconListLDEF, NULL);    // unregister the list definition

    DisposeDialog(prefsDialog);

    EnableMenuItem(GetMenuRef(mDemonstration), iPrefsDialog);

}

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

void RedrawPrefsDialogList(DialogRef prefsDialog)

{

    ControlRef listBoxControl;

    GetDialogItemAsControl(prefsDialog, iIconList, &listBoxControl);

    Draw1Control(listBoxControl);   // redraw the list box control

}

#pragma mark -

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

static pascal OSStatus dialogEventHandler(EventHandlerCallRef nextHandler, EventRef event, 

                                            void *prefsDialog)

{

#pragma unused (nextHandler)

    OSStatus result = eventNotHandledErr;

    UInt32 eventClass, eventKind;

    ControlRef controlHit;

    ControlID controlID;

    eventClass = GetEventClass(event);

    eventKind = GetEventKind(event);

    switch (eventClass)

    {

        case kEventClassControl:

            switch (eventKind)

            {

                case kEventControlHit:

                    GetEventParameter(event, kEventParamDirectObject, typeControlRef, NULL, 

                                        sizeof(ControlRef), NULL, &controlHit);

                    GetControlID(controlHit, &controlID);

                    handleDialogItemHit((DialogRef)prefsDialog, (DialogItemIndex)controlID.id);

                    result = noErr;

                    break;

            }

            break;

    }

    return result;

}

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

static pascal OSStatus listBoxControlEventHandler(EventHandlerCallRef nextHandler, 

                                                    EventRef event, void *prefsDialog)

{

    OSStatus result = eventNotHandledErr;

    UInt32 eventClass, eventKind;

    DialogRef dialog;

    WindowRef dialogWindow;

    eventClass = GetEventClass(event);

    eventKind = GetEventKind(event);

    switch (eventClass)

    {

        case kEventClassTextInput:

            switch (eventKind)

            {

                case kEventTextInputUnicodeForKeyEvent:

                        /* The strategy here is to first let the default handler handle 

                           the event (i.e. change the selected cell in the category list 

                           box control), then react to that change by showing the 

                           correct category panel.  However the key pressed could 

                           potentially cause the default or cancel button to get hit.  

                           In this case, our window handler will be called which will 

                           dispose of the dialog.  If this is the case, we need to not 

                           postprocess the event.  We will test for this by getting the 

                           dialog's window, retaining it, calling the default handler, 

                           then getting the window's retain count.  If the retain count 

                           is back to 1, then we know the dialog is already disposed. */

                    dialog = (DialogRef)prefsDialog;

                    dialogWindow = GetDialogWindow(dialog);

                    RetainWindow(dialogWindow);     // hold onto the dialog's window

                    result = CallNextEventHandler(nextHandler, event);

                    if (result == noErr)    // we don't need to postprocess if nothing happened

                    {

                        ItemCount retainCount;

                        retainCount = GetWindowRetainCount(dialogWindow);

                        if (retainCount > 1)        // if we're the last one holding the window

                            handleDialogItemHit(dialog, iIconList);     // then there's no 

                    }           // need to postprocess anything because it's about to go away

                    ReleaseWindow(dialogWindow);

                    break;

            }

            break;

    }

    return result;

}

#pragma mark -

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

static void handleDialogItemHit(DialogRef prefsDialog, DialogItemIndex itemHit)

{

    if (itemHit == iIconList)

    {

        ControlRef listBoxControl;

        ListHandle iconList;

        Cell theCell;

        GetDialogItemAsControl(prefsDialog, iIconList, &listBoxControl);

        GetControlData(listBoxControl, kControlEntireControl, 

                        kControlListBoxListHandleTag, sizeof(ListHandle), 

                        &iconList, NULL);

        SetPt(&theCell, 0, 0);

        LGetSelect(true, &theCell, iconList);

        if ((theCell.v) != gPanelNumber)

            changePanel(prefsDialog, theCell.v);

    }

    else if ( (itemHit == kStdOkItemIndex) || (itemHit == kStdCancelItemIndex) )

        ClosePrefsDialog(prefsDialog);

}

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

static void changePanel(DialogRef dialog, short newPanel)

{

    ControlRef userPane;

    static const SInt16 panelIndexes[kNumberOfRows] = {

                                                        iUserPane1,

                                                        iUserPane2,

                                                        iUserPane3,

                                                        iUserPane4,

                                                        iUserPane5,

                                                        iUserPane6,

                                                        iUserPane7,

                                                        iUserPane8,

                                                        iUserPane9,

                                                        iUserPane10

                                                      };

    GetDialogItemAsControl(dialog, panelIndexes[gPanelNumber], &userPane);

    SetControlVisibility(userPane, false, false);   // hide the currently active panel

    GetDialogItemAsControl(dialog, panelIndexes[newPanel], &userPane);

    SetControlVisibility(userPane, true, true);     // and show the newly selected panel

    gPanelNumber = newPanel;

}