#ifndef lint

static char Xrcsid[] = "$XConsortium: Dialog.c,v 1.37 89/12/06 15:26:31 kit Exp $";

#endif /* lint */

/***********************************************************

Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts,

and the Massachusetts Institute of Technology, Cambridge, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 

documentation for any purpose and without fee is hereby granted, 

provided that the above copyright notice appear in all copies and that

both that copyright notice and this permission notice appear in 

supporting documentation, and that the names of Digital or MIT not be

used in advertising or publicity pertaining to distribution of the

software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING

ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL

DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR

ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,

WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,

ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS

SOFTWARE.

******************************************************************/

/* NOTE: THIS IS NOT A WIDGET!  Rather, this is an interface to a widget.

   It implements policy, and gives a (hopefully) easier-to-use interface

   than just directly making your own form. */

#include <X11/Xlib.h>

#include <X11/Xos.h>

#include <X11/IntrinsicP.h>

#include <X11/StringDefs.h>

#include <X11/Xmu/Misc.h>

#include <./Xaw3_1XawInit.h>

#include <./Xaw3_1AsciiText.h>

#include <./Xaw3_1Command.h>	

#include <./Xaw3_1Label.h>

#include <./Xaw3_1DialogP.h>

#include <./Xaw3_1Cardinals.h>

/*

 * After we have set the string in the value widget we set the

 * string to a magic value.  So that when a SetValues request is made

 * on the dialog value we will notice it, and reset the string.

 */

#define MAGIC_VALUE ((char *) 3)

#define streq(a,b) (strcmp( (a), (b) ) == 0)

static XtResource resources[] = {

  {XtNlabel, XtCLabel, XtRString, sizeof(String),

     XtOffset(DialogWidget, dialog.label), XtRString, NULL},

  {XtNvalue, XtCValue, XtRString, sizeof(String),

     XtOffset(DialogWidget, dialog.value), XtRString, NULL},

  {XtNicon, XtCIcon, XtRPixmap, sizeof(Pixmap),

     XtOffset(DialogWidget, dialog.icon), XtRImmediate, 0},

};

static void Initialize(), ConstraintInitialize(), CreateDialogValueWidget();

static Boolean SetValues();

DialogClassRec dialogClassRec = {

  { /* core_class fields */

    /* superclass         */    (WidgetClass) &formClassRec,

    /* class_name         */    "Dialog",

    /* widget_size        */    sizeof(DialogRec),

    /* class_initialize   */    XawInitializeWidgetSet,

    /* class_part init    */    NULL,

    /* class_inited       */    FALSE,

    /* initialize         */    Initialize,

    /* initialize_hook    */    NULL,

    /* realize            */    XtInheritRealize,

    /* actions            */    NULL,

    /* num_actions        */    0,

    /* resources          */    resources,

    /* num_resources      */    XtNumber(resources),

    /* xrm_class          */    NULLQUARK,

    /* compress_motion    */    TRUE,

    /* compress_exposure  */    TRUE,

    /* compress_enterleave*/    TRUE,

    /* visible_interest   */    FALSE,

    /* destroy            */    NULL,

    /* resize             */    XtInheritResize,

    /* expose             */    XtInheritExpose,

    /* set_values         */    SetValues,

    /* set_values_hook    */    NULL,

    /* set_values_almost  */    XtInheritSetValuesAlmost,

    /* get_values_hook    */    NULL,

    /* accept_focus       */    NULL,

    /* version            */    XtVersion,

    /* callback_private   */    NULL,

    /* tm_table           */    NULL,

    /* query_geometry     */	XtInheritQueryGeometry,

    /* display_accelerator*/	XtInheritDisplayAccelerator,

    /* extension          */	NULL

  },

  { /* composite_class fields */

    /* geometry_manager   */   XtInheritGeometryManager,

    /* change_managed     */   XtInheritChangeManaged,

    /* insert_child       */   XtInheritInsertChild,

    /* delete_child       */   XtInheritDeleteChild,

    /* extension          */   NULL

  },

  { /* constraint_class fields */

    /* subresourses       */   NULL,

    /* subresource_count  */   0,

    /* constraint_size    */   sizeof(DialogConstraintsRec),

    /* initialize         */   ConstraintInitialize,

    /* destroy            */   NULL,

    /* set_values         */   NULL,

    /* extension          */   NULL

  },

  { /* form_class fields */

    /* layout             */   XtInheritLayout

  },

  { /* dialog_class fields */

    /* empty              */   0

  }

};

WidgetClass dialogWidgetClass = (WidgetClass)&dialogClassRec;

/* ARGSUSED */

static void Initialize(request, new)

Widget request, new;

{

    DialogWidget dw = (DialogWidget)new;

    Arg arglist[9];

    Cardinal num_args = 0;

    XtSetArg(arglist[num_args], XtNborderWidth, 0); num_args++;

    XtSetArg(arglist[num_args], XtNleft, XtChainLeft); num_args++;

    if (dw->dialog.icon != (Pixmap)0) {

	XtSetArg(arglist[num_args], XtNbitmap, dw->dialog.icon); num_args++;

	XtSetArg(arglist[num_args], XtNright, XtChainLeft); num_args++;

	dw->dialog.iconW =

	    XtCreateManagedWidget( "icon", labelWidgetClass,

				   new, arglist, num_args );

	num_args = 2;

	XtSetArg(arglist[num_args], XtNfromHoriz, dw->dialog.iconW);num_args++;

    } else dw->dialog.iconW = (Widget)NULL;

    XtSetArg(arglist[num_args], XtNlabel, dw->dialog.label); num_args++;

    XtSetArg(arglist[num_args], XtNright, XtChainRight); num_args++;

    dw->dialog.labelW = XtCreateManagedWidget( "label", labelWidgetClass,

					      new, arglist, num_args);

    if (dw->dialog.iconW != (Widget)NULL &&

	(dw->dialog.labelW->core.height < dw->dialog.iconW->core.height)) {

	XtSetArg( arglist[0], XtNheight, dw->dialog.iconW->core.height );

	XtSetValues( dw->dialog.labelW, arglist, ONE );

    }

    if (dw->dialog.value != NULL) 

        CreateDialogValueWidget( (Widget) dw);

    else

        dw->dialog.valueW = NULL;

}

/* ARGSUSED */

static void ConstraintInitialize(request, new)

Widget request, new;

{

    DialogWidget dw = (DialogWidget)new->core.parent;

    DialogConstraints constraint = (DialogConstraints)new->core.constraints;

    if (!XtIsSubclass(new, commandWidgetClass))	/* if not a button */

	return;					/* then just use defaults */

    constraint->form.left = constraint->form.right = XtChainLeft;

    if (dw->dialog.valueW == NULL) 

      constraint->form.vert_base = dw->dialog.labelW;

    else

      constraint->form.vert_base = dw->dialog.valueW;

    if (dw->composite.num_children > 1) {

	WidgetList children = dw->composite.children;

	Widget *childP;

        for (childP = children + dw->composite.num_children - 1;

	     childP >= children; childP-- ) {

	    if (*childP == dw->dialog.labelW || *childP == dw->dialog.valueW)

	        break;

	    if (XtIsManaged(*childP) &&

		XtIsSubclass(*childP, commandWidgetClass)) {

	        constraint->form.horiz_base = *childP;

		break;

	    }

	}

    }

}

#define ICON 0

#define LABEL 1

#define NUM_CHECKS 2

/* ARGSUSED */

static Boolean SetValues(current, request, new, in_args, in_num_args)

Widget current, request, new;

ArgList in_args;

Cardinal *in_num_args;

{

    DialogWidget w = (DialogWidget)new;

    DialogWidget old = (DialogWidget)current;

    Arg args[5];

    Cardinal num_args;

    int i;

    Boolean checks[NUM_CHECKS];

    for (i = 0; i < NUM_CHECKS; i++)

	checks[i] = FALSE;

    for (i = 0; i < *in_num_args; i++) {

	if (streq(XtNicon, in_args[i].name))

	    checks[ICON] = TRUE;

	if (streq(XtNlabel, in_args[i].name))

	    checks[LABEL] = TRUE;

    }

    if (checks[ICON]) {

	if (w->dialog.icon != (Pixmap)0) {

	    XtSetArg( args[0], XtNbitmap, w->dialog.icon );

	    if (old->dialog.iconW != (Widget)NULL) {

		XtSetValues( old->dialog.iconW, args, ONE );

	    } else {

		XtSetArg( args[1], XtNborderWidth, 0);

		XtSetArg( args[2], XtNleft, XtChainLeft);

		XtSetArg( args[3], XtNright, XtChainLeft);

		w->dialog.iconW =

		    XtCreateWidget( "icon", labelWidgetClass,

				    new, args, FOUR );

		((DialogConstraints)w->dialog.labelW->core.constraints)->

		    form.horiz_base = w->dialog.iconW;

		XtManageChild(w->dialog.iconW);

	    }

	} else {

	    ((DialogConstraints)w->dialog.labelW->core.constraints)->

		    form.horiz_base = (Widget)NULL;

	    XtDestroyWidget(old->dialog.iconW);

	    w->dialog.iconW = (Widget)NULL;

	}

    }

    if ( checks[LABEL] ) {

        num_args = 0;

        XtSetArg( args[num_args], XtNlabel, w->dialog.label ); num_args++;

	if (w->dialog.iconW != (Widget)NULL &&

	    (w->dialog.labelW->core.height <= w->dialog.iconW->core.height)) {

	    XtSetArg(args[num_args], XtNheight, w->dialog.iconW->core.height);

	    num_args++;

	}

	XtSetValues( w->dialog.labelW, args, num_args );

    }

    if ( w->dialog.value != old->dialog.value ) {

        if (w->dialog.value == NULL)  /* only get here if it

					  wasn't NULL before. */

	    XtDestroyWidget(old->dialog.valueW);

	else if (old->dialog.value == NULL) { /* create a new value widget. */

	    w->core.width = old->core.width;

	    w->core.height = old->core.height;

#ifdef notdef

/* this would be correct if Form had the same semantics on Resize

 * as on MakeGeometryRequest.  Unfortunately, Form botched it, so

 * any subclasses will currently have to deal with the fact that

 * we're about to change our real size.

 */

	    w->form.resize_in_layout = False; 

	    CreateDialogValueWidget( (Widget) w);

	    w->core.width = w->form.preferred_width;

	    w->core.height = w->form.preferred_height;

	    w->form.resize_in_layout = True;

#else /*notdef*/

	    CreateDialogValueWidget( (Widget) w);

#endif /*notdef*/

	}

	else {			/* Widget ok, just change string. */

	    Arg args[1];

	    XtSetArg(args[0], XtNstring, w->dialog.value);

	    XtSetValues(w->dialog.valueW, args, ONE);

	    w->dialog.value = MAGIC_VALUE;

	}

    }

    return False;

}

/*	Function Name: CreateDialogValueWidget

 *	Description: Creates the dialog widgets value widget.

 *	Arguments: w - the dialog widget.

 *	Returns: none.

 *

 *	must be called only when w->dialog.value is non-nil.

 */

static void

CreateDialogValueWidget(w)

Widget w;

{

    DialogWidget dw = (DialogWidget) w;    

    Arg arglist[10];

    Cardinal num_args = 0;

#ifdef notdef

    XtSetArg(arglist[num_args], XtNwidth,

	     dw->dialog.labelW->core.width); num_args++; /* ||| hack */

#endif /*notdef*/

    XtSetArg(arglist[num_args], XtNstring, dw->dialog.value);     num_args++;

    XtSetArg(arglist[num_args], XtNresizable, True);              num_args++;

    XtSetArg(arglist[num_args], XtNresize, XawtextResizeBoth);    num_args++;

    XtSetArg(arglist[num_args], XtNeditType, XawtextEdit);        num_args++;

    XtSetArg(arglist[num_args], XtNfromVert, dw->dialog.labelW);  num_args++;

    XtSetArg(arglist[num_args], XtNleft, XtChainLeft);            num_args++;

    XtSetArg(arglist[num_args], XtNright, XtChainRight);          num_args++;

    dw->dialog.valueW = XtCreateWidget("value",asciiTextWidgetClass,

				       w, arglist, num_args);

    /* if the value widget is being added after buttons,

     * then the buttons need new layout constraints.

     */

    if (dw->composite.num_children > 1) {

	WidgetList children = dw->composite.children;

	Widget *childP;

        for (childP = children + dw->composite.num_children - 1;

	     childP >= children; childP-- ) {

	    if (*childP == dw->dialog.labelW || *childP == dw->dialog.valueW)

		continue;

	    if (XtIsManaged(*childP) &&

		XtIsSubclass(*childP, commandWidgetClass)) {

	        ((DialogConstraints)(*childP)->core.constraints)->

		    form.vert_base = dw->dialog.valueW;

	    }

	}

    }

    XtManageChild(dw->dialog.valueW);

/* 

 * Value widget gets the keyboard focus.

 */

    XtSetKeyboardFocus(w, dw->dialog.valueW);

    dw->dialog.value = MAGIC_VALUE;

}

void 

XawDialogAddButton(dialog, name, function, param)

Widget dialog;

String name;

XtCallbackProc function;

XtPointer param;

{

/*

 * Correct Constraints are all set in ConstraintInitialize().

 */

    Widget button;

    button = XtCreateManagedWidget( name, commandWidgetClass, dialog, 

				    NULL, (Cardinal) 0 );

    if (function != NULL)	/* don't add NULL callback func. */

        XtAddCallback(button, XtNcallback, function, param);

}

char *XawDialogGetValueString(w)

Widget w;

{

    Arg args[1];

    char * value;

    XtSetArg(args[0], XtNstring, &value);

    XtGetValues( ((DialogWidget)w)->dialog.valueW, args, ONE);

    return(value);

}