/*
 *
 * Author:  Chris D. Peterson, MIT X Consortium
 */

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

Copyright (c) 1993, Oracle and/or its affiliates. All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice (including the next
paragraph) shall be included in all copies or substantial portions of the
Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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

/*

Copyright 1989, 1994, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.

*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "IntrinsicI.h"
#include <X11/Xatom.h>

/*	Function Name: XtSetWMColormapWindows
 *
 *	Description: Sets the value of the WM_COLORMAP_WINDOWS
 *                   property on a widget's window.
 *
 *	Arguments:  widget - specifies the widget on whose window the
 *   		           - WM_COLORMAP_WINDOWS property will be stored.
 *
 *                  list - Specifies a list of widgets whose windows are to be
 *		           listed in the WM_COLORMAP_WINDOWS property.
 *                  count - Specifies the number of widgets in list.
 *
 *	Returns: none.
 */

void
XtSetWMColormapWindows(
    Widget widget,
    Widget *list,
    Cardinal count)
{
    Window *data;
    Widget *checked, *top, *temp, hookobj;
    Cardinal i, j, checked_count;
    Boolean match;
    Atom xa_wm_colormap_windows;
    WIDGET_TO_APPCON(widget);

    LOCK_APP(app);
    if ( !XtIsRealized(widget) || (count == 0) ) {
	UNLOCK_APP(app);
	return;
    }

    top = checked = (Widget *) __XtMalloc( (Cardinal) sizeof(Widget) * count);


/*
 * The specification calls for only adding the windows that have unique
 * colormaps to the property to this function, so we will make a pass through
 * the widget list removing all the widgets with non-unique colormaps.
 *
 * We will also remove any unrealized widgets from the list at this time.
 */

    for (checked_count = 0, i = 0; i < count; i++) {
	if (!XtIsRealized(list[i])) continue;

	*checked = list[i];
	match = FALSE;

/*
 * Don't check first element for matching colormap since there is nothing
 * to check it against.
 */

	if (checked != top)
	    for (j = 0, temp = top; j < checked_count ; j++, temp++)
		if ( (*temp)->core.colormap == (*checked)->core.colormap) {
		    match = TRUE;
		    break;
		}

/*
 * If no colormap was found to match then add this widget to the linked list.
 */

	if (!match) {
	    checked++;
	    checked_count++;
	}
    }

/*
 * Now that we have the list of widgets we need to convert it to a list of
 * windows and set the property.
 */

    data = (Window *) __XtMalloc( (Cardinal) sizeof(Window) * checked_count);

    for ( i = 0 ; i < checked_count ; i++)
	data[i] = XtWindow(top[i]);

    xa_wm_colormap_windows = XInternAtom(XtDisplay(widget),
					 "WM_COLORMAP_WINDOWS", FALSE);

    XChangeProperty(XtDisplay(widget), XtWindow(widget),
		    xa_wm_colormap_windows, XA_WINDOW, 32,
		    PropModeReplace, (unsigned char *) data, (int) i);

    hookobj = XtHooksOfDisplay(XtDisplay(widget));
    if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
	XtChangeHookDataRec call_data;

	call_data.type = XtHsetWMColormapWindows;
	call_data.widget = widget;
	call_data.event_data = (XtPointer) list;
	call_data.num_event_data = count;
	XtCallCallbackList(hookobj,
		((HookObject)hookobj)->hooks.changehook_callbacks,
		(XtPointer)&call_data);
    }

    XtFree( (char *) data);
    XtFree( (char *) top);
    UNLOCK_APP(app);
}
