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/*
* Motif Tools Library, Version 3.1
* $Id$
*
* Written by David Flanagan.
* Copyright (c) 1992-2001 by David Flanagan.
* All Rights Reserved. See the file COPYRIGHT for details.
* This is open source software. See the file LICENSE for details.
* There is no warranty for this software. See NO_WARRANTY for details.
*
* $Log$
* Revision 1.1.1.1 2001/07/18 11:06:03 root
* Initial checkin.
*
* Revision 1.2 2001/06/12 16:25:28 andre
* *** empty log message ***
*
*
*/
#include <Xmt/Xmt.h>
#include <Xmt/ScreenP.h>
#include <Xmt/AppResP.h>
#include <Xmt/Hash.h>
#include <X11/IntrinsicP.h>
/* ARGSUSED */
#if NeedFunctionPrototypes
static void DestroyCallback(Widget w, XtPointer tag, XtPointer data)
#else
static void DestroyCallback(w, tag, data)
Widget w;
XtPointer tag;
XtPointer data;
#endif
{
XmtPerScreenInfo *info = (XmtPerScreenInfo *)tag;
XmtAppResources *app = XmtGetApplicationResources(w);
/* remove the info structure from the per-screen hash table */
XmtHashTableDelete(app->screen_table, (XtPointer)XtScreen(w));
/*
* Free array of dialogs.
* The dialogs themselves will be destroyed by whatever destroyed
* the shell.
*/
XtFree((char *)info->help_dialog_cache.dialogs);
/* free the info structure itself */
XtFree((char *)info);
}
/*
* We cache dialogs by appshell and by screen.
* XXX a 2D hashtable would be nice here, so we don't do a double lookup.
*/
#if NeedFunctionPrototypes
XmtPerScreenInfo *XmtGetPerScreenInfo(Widget w)
#else
XmtPerScreenInfo *XmtGetPerScreenInfo(w)
Widget w;
#endif
{
XmtAppResources *app = XmtGetApplicationResources(w);
XmtPerScreenInfo *info;
Screen *screen = XtScreenOfObject(w);
Widget shell;
Boolean status;
status = XmtHashTableLookup(app->screen_table,
(XtPointer) screen,
(XtPointer *) &info);
if (!status) {
info = (XmtPerScreenInfo *) XtCalloc(1, sizeof(XmtPerScreenInfo));
/*
* the info->topmost_shell field is the highest level shell on this
* screen within the widget hierarchy. It might be the root shell or
* it might not be. I assert that the algorithm below always yields
* a shell widget, but it doesn't really matter.
*/
for(shell=NULL; w; shell = w, w = XtParent(w)) {
if (!XtIsWidget(w)) continue;
if (w->core.screen != screen) break;
}
info->topmost_shell = shell;
XtAddCallback(shell, XtNdestroyCallback,
DestroyCallback, (XtPointer) info);
XmtHashTableStore(app->screen_table,
(XtPointer) screen,
(XtPointer) info);
}
return info;
}
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