#include "DialogUtilities.h"

#include <Packages.h>

/*

 * User clicked on a checkbox.

 */

void

SelectCheckBox(

        DialogPtr           theDialog,

        short               itemNumber,

        Boolean             *value

    )

{

        short               temp;

        temp = *value;

        SelectRadioButton(theDialog, itemNumber, itemNumber, itemNumber, &temp);

        *value = temp;

}

/*

 * Initalize a check box.

 */

void

SetCheckBox(

        DialogPtr           theDialog,

        short               itemNumber,

        Boolean             value

    )

{

        SetRadioButtons(theDialog, itemNumber, itemNumber, value);

}

/*

 * User clicked on a radio button, change the group.

 */

void

SelectRadioButton(

        DialogPtr           theDialog,

        short               first,

        short               last,

        short               item,

        short               *value      /* Has/gets zero to last-1  */

    )

{

        if (item < first || item > last)

            ;

        else if (last > first) {        /* Radio button             */

            SetDialogButton(theDialog, *value + first, kActiveButton);

            SetDialogButton(theDialog, item, kCheckedButton);

            *value = item - first;

        }

        else {                          /* Check box                */

            *value = !(*value);

            SetDialogButton(

                theDialog,

                first,

                (*value != 0) ? kCheckedButton : kActiveButton

            );

        }

}

/*

 * Clear out a radio button group, then check the desired one.

 */

void

SetRadioButtons(

        DialogPtr           theDialog,

        short               first,

        short               last,

        short               value

    )

{

        short               i;

        if (first == last) {            /* Check box                */

            SetDialogButton(

                theDialog,

                first,

                (value != 0) ? kCheckedButton : kActiveButton

            );

        }

        else {

            for (i = first; i <= last; i++) {

                SetDialogButton(theDialog, i, kActiveButton);

                SetDialogButton(theDialog, first + value, kCheckedButton);

            }

        }

}

void

SetDialogButton(

        DialogPtr           theDialog,

        short               item,

        short               value

    )

{

        short               type;

        Handle              handle;

        Rect                box;

        GetDItem(theDialog, item, &type, &handle, &box);

        switch (type & ~itemDisable) {

        case (ctrlItem + btnCtrl):

            if (value == kActiveButton)

                HiliteControl((ControlHandle) handle, 0);

            else if (value == kDisabledButton) {

                HiliteControl((ControlHandle) handle, 255);

            }

            break;

        case (ctrlItem + chkCtrl):

        case (ctrlItem + radCtrl):

            if (value == kDisabledButton)

                HiliteControl((ControlHandle) handle, 255);

            else {

                HiliteControl((ControlHandle) handle, 0);

                SetCtlValue((ControlHandle) handle, value);

            }

            break;

        case (userItem):

            if (((WindowPeek) theDialog)->visible

             && (value == kActiveButton || value == kCheckedButton))

                InvertRect(&box);

            break;

        }   

}

/*

 * Return the theDialog button's value (kActiveButton, or kCheckedButton).

 */

short

GetDialogButton(

        DialogPtr           theDialog,

        short               item

    )

{

        short               type;

        ControlHandle       handle;

        Rect                box;

        GetDItem(theDialog, item, &type, (Handle *) &handle, &box);

        return (GetCtlValue(handle));

}

void

EnableDialogItem(

        DialogPtr           theDialog,

        short               item,

        Boolean             enableItem

    )

{

        short               type;

        ControlHandle       handle;

        Rect                box;

        Boolean             isEnabled;

        GetDItem(theDialog, item, &type, (Handle *) &handle, &box);

        isEnabled = (type & itemDisable) == 0;

        if (isEnabled != enableItem) {

            if (enableItem)

                type &= ~itemDisable;

            else {

                type |= itemDisable;

            }

            SetDItem(theDialog, item, type, (Handle) handle, &box);

            switch (type & ~itemDisable) {

            case (ctrlItem + btnCtrl):

            case (ctrlItem + chkCtrl):

            case (ctrlItem + radCtrl):

            case (ctrlItem + resCtrl):

                if (enableItem)

                    HiliteControl(handle, 0);

                else {

                    HiliteControl(handle, 255);

                }

                break;

            }

        }   

}

signed long

GetDialogValue(

        DialogPtr           theDialog,

        short               item

    )

{

        short               type;

        Handle              handle;

        Rect                box;

        signed long         result;

        Str255              work;

        GetDItem(theDialog, item, &type, &handle, &box);    

        GetIText(handle, work);

        StringToNum(work, &result);

        return (result);

}

void

SetDialogValue(

        DialogPtr           theDialog,

        short               item,

        signed long         value

    )

{

        Str255              work;

        NumToString(value, work);

        SetDialogText(theDialog, item, work);

}

void

SetDialogText(

        DialogPtr           theDialog,

        short               item,

        ConstStr255Param    theText

    )

{

        short               type;

        Handle              handle;

        Rect                box;

        GetDItem(theDialog, item, &type, &handle, &box);

        SetIText(handle, theText);

}