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-/* $Xorg: ResConfig.c,v 1.5 2001/02/09 02:03:56 xorgcvs Exp $ */
-/*
-
-Copyright 1987, 1988, 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.
-
-*/
-/*****************************************************************
-
-(C) COPYRIGHT International Business Machines Corp. 1992,1997
- 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.
-
-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 IBM CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
-BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL 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 IBM Corporation 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 IBM
-Corporation.
-
-******************************************************************/
-/* $XFree86: xc/lib/Xt/ResConfig.c,v 3.7 2001/08/22 22:52:19 dawes Exp $ */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include "Intrinsic.h"
-#include "IntrinsicI.h"
-#include "Core.h"
-#include "CoreP.h"
-#include "ShellP.h"
-#include "StringDefs.h"
-#include "ResConfigP.h"
-#include <X11/Xatom.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#define MAX_BUFFER 512
-
-static void _search_child(Widget, char *, char *, char *, char *, char, char *);
-static void _set_and_search(Widget, char *, char *, char *, char *, char , char *);
-static int _locate_children(Widget, Widget **);
-
-#if defined(sun) && !defined(SVR4)
-# define Strtoul(a,b,c) (unsigned long)strtol(a,b,c)
-#else
-# define Strtoul(a,b,c) strtoul(a,b,c)
-#endif
-
-
-/*
- * NAME: _set_resource_values
- *
- * FUNCTION:
- * This function sets the value on the widget. It must first determine
- * if the last part is a valid resource for that widget. (eg.
- * labelString is a valid resource for label but not for bulletin board)
- * It must also add the resource to the application's resource database
- * and then query it out using specific resource strings that it builds
- * from the widget information. This ensures that a customizing tool
- * on-the-fly paradigm is followed: an application that is
- * instantaneously updated should look the same as one that is restarted
- * and uses the .Xdefaults file.
- *
- * PARAMETERS:
- * w the widget to match
- * resource the resource string to be matched
- * value the value to be set
- * last_part the last resource part (e.g. *background)
- *
- * RETURN VALUES: void
- *
- * ERRORS: none
- */
-static void
-_set_resource_values (
- Widget w,
- char *resource,
- char *value,
- char *last_part)
-{
- XrmDatabase db = NULL;
- char *resource_name = NULL;
- char *resource_class = NULL;
- char *return_type;
- XrmValue return_value;
- char *resource_value;
- Widget cur = w;
- char *temp;
- XtResourceList resources_return = NULL;
- Cardinal num_resources_return = 0;
- Cardinal res_index;
- Boolean found_resource = False;
- Display *dpy;
- XrmDatabase tmp_db;
-
- if (!XtIsWidget (w))
- dpy = XtDisplay (w->core.parent);
- else
- dpy = XtDisplay (w);
- tmp_db = XtDatabase(dpy);
-
- /*
- * get a list of all the valid resources for this widget
- */
- XtGetResourceList (w->core.widget_class,
- &resources_return, &num_resources_return);
-
- /*
- * try to match the last_part of the resource string with
- * a resource in this resource list
- */
- for (res_index=0; res_index<num_resources_return; res_index++) {
- if ((strcmp (last_part,
- resources_return[res_index].resource_name) == 0) ||
- (strcmp (last_part,
- resources_return[res_index].resource_class) == 0)) {
- found_resource = True;
- break;
- }
- }
-
- /*
- * if resource is not a valid resource for this widget
- * or the resource name or class are NULL
- * then exit this function
- */
- if (!found_resource
- || !resources_return[res_index].resource_name
- || !resources_return[res_index].resource_class) {
- XtFree ((char *) resources_return);
- return;
- }
-
- /*
- * build the full resource name and class specifications so
- * that you can query the resource database
- * eg: .app.button1.foreground
- * .App.XmPushButton.Foreground
- */
- while (cur != NULL) {
- /*
- * create resource name string
- */
- if (resource_name) {
- temp = XtMalloc (sizeof(char) *
- (2 + strlen(cur->core.name)
- + strlen(resource_name)));
- sprintf (temp, ".%s%s", cur->core.name, resource_name);
- XtFree (resource_name);
- } else if (!XtIsWidget (cur) || !cur->core.name) {
- cur = XtParent(cur);
- continue;
- } else {
- temp = XtMalloc (sizeof(char) *
- (2 + strlen(cur->core.name)));
- sprintf (temp, ".%s", cur->core.name);
- }
- resource_name = temp;
-
- /*
- * create resource class string
- */
- if ((XtIsTopLevelShell (cur)) && (XtParent (cur) == NULL)) {
- ApplicationShellWidget top =
- (ApplicationShellWidget) (cur);
-
- if (resource_class) {
- temp = XtMalloc (sizeof(char) *
- (2 + strlen(top->application.class)
- + strlen(resource_class)));
- sprintf (temp, ".%s%s",
- top->application.class, resource_class);
- } else {
- temp = XtMalloc (sizeof(char) *
- (2 + strlen(top->application.class)));
- sprintf (temp, ".%s",
- top->application.class);
- }
- } else {
- if (resource_class) {
- temp = XtMalloc (sizeof(char) *
- (2 + strlen(
- cur->core.widget_class->core_class.class_name)
- + strlen(resource_class)));
- sprintf (temp, ".%s%s",
- cur->core.widget_class->core_class.class_name,
- resource_class);
- } else {
- temp = XtMalloc (sizeof(char) *
- (2 + strlen(
- cur->core.widget_class->core_class.class_name)));
- sprintf (temp, ".%s",
- cur->core.widget_class->core_class.class_name);
- }
- }
- if (resource_class != NULL)
- XtFree (resource_class);
- resource_class = temp;
-
- cur = XtParent(cur);
- }
-
- /*
- * add the resource name to the end of the resource name string
- */
- temp = XtMalloc (2 + strlen(resource_name) +
- strlen(resources_return[res_index].resource_name));
- sprintf (temp, "%s.%s", resource_name,
- resources_return[res_index].resource_name);
- if (resource_name != NULL)
- XtFree (resource_name);
- resource_name = temp;
-
- /*
- * add the resource class to the end of the resource class string
- */
- temp = XtMalloc (2 + strlen(resource_class) +
- strlen(resources_return[res_index].resource_class));
- sprintf (temp, "%s.%s", resource_class,
- resources_return[res_index].resource_class);
- if (resource_class != NULL)
- XtFree (resource_class);
- resource_class = temp;
-
-#ifdef DEBUG
- fprintf (stderr, "resource_name = %s\n", resource_name);
- fprintf (stderr, "resource_class = %s\n", resource_class);
-#endif
-
- /*
- * put the resource and its value in a resource database and
- * then query it back out again using the specific name and
- * class resource strings that were built above. This is
- * necessary to maintain a precedence similar to the .Xdefaults
- * file
- */
- XrmPutStringResource (&db, resource, value);
- XrmMergeDatabases (db, &tmp_db);
- XrmGetResource (tmp_db, resource_name, resource_class,
- &return_type, &return_value);
- if (return_type)
- resource_value = XtNewString (return_value.addr);
- else
- resource_value = XtNewString (value);
-
-#ifdef DEBUG
- fprintf (stderr,
- "Apply:\n\twidget = %s\n\tlast_part = %s\n\tvalue = %s\n",
- (w->core.name == NULL) ? "NULL" : w->core.name,
- resources_return[res_index].resource_name,
- resource_value);
-#endif
- /*
- * use XtVaSetValues with XtVaTypedArg to convert the value of
- * type String the the same type as the resource (last_part).
- * Then set the value.
- */
- XtVaSetValues (w,
- XtVaTypedArg, resources_return[res_index].resource_name,
- XtRString, resource_value,
- strlen (resource_value) + 1,
- NULL);
-
- XtFree ((char *) resources_return);
- XtFree (resource_name);
- XtFree (resource_class);
- XtFree (resource_value);
-}
-
-/*
- * NAME: _apply_values_to_children
- *
- * FUNCTION:
- * Once the resource string matches the value must be applied to
- * all children if applicable. (eg. App*Form.background must apply
- * background to all children of the Form widget)
- *
- * PARAMETERS:
- * w the widget to match
- * remainder the part of the resource string left over
- * resource the resource string to be matched
- * value the value to be set
- * last_token the last * or . before the final resoruce part
- * last_part the last resource part (e.g. *background)
- *
- * RETURN VALUES: void
- *
- * ERRORS: none
- */
-static void
-_apply_values_to_children (
- Widget w,
- char *remainder,
- char *resource,
- char *value,
- char last_token,
- char *last_part)
-{
- int i;
- int num_children;
- Widget *children;
-
- /*
- * Recursively search through the children
- */
- num_children = _locate_children (w, &children);
-
- for (i=0; i<num_children; i++) {
-
-#ifdef DEBUG
- if (XtIsWidget (children[i]) && XtIsWidget (w))
- fprintf (stderr, "searching child %s of parent %s\n",
- children[i]->core.name, w->core.name);
- else
- fprintf (stderr,"searching child (NULL) of parent %s\n",
- w->core.name);
- if (!XtIsWidget (children[i]))
- fprintf (stderr, "children[%d] is NOT a widget\n", i);
- if (!XtIsWidget (w))
- fprintf (stderr, "w is NOT a widget\n");
-#endif
-
- _set_resource_values (children[i], resource, value, last_part);
- _apply_values_to_children (children[i], remainder,
- resource, value, last_token, last_part);
- }
-
- XtFree ((char *)children);
-}
-
-/*
- * NAME: _search_child
- *
- * FUNCTION:
- * descends through each child of the tree
- *
- * PARAMETERS:
- * w the widget whose children are to be searched
- * indx index into the resource string
- * remainder the remaining part of the resource string
- * resource the resource string to be matched
- * value the value to be applied
- * last_token the last * or . before the final resoruce part
- * last_part the last resource part (e.g. *background)
- *
- * RETURN VALUES: none
- *
- * ERRORS: none
- */
-static void
-_search_child (
- Widget w,
- char *indx,
- char *remainder,
- char *resource,
- char *value,
- char last_token,
- char *last_part)
-{
- int i;
- int num_children;
- Widget *children;
-
- /*
- * Recursively search through the children
- */
- num_children = _locate_children (w, &children);
- for (i=0; i<num_children; i++) {
- _set_and_search (children[i], indx, remainder, resource,
- value, last_token, last_part);
- }
-
- XtFree ((char *)children);
-}
-
-/*
- * NAME: _get_part
- *
- * FUNCTION:
- * This routine will return the token and following part of the resource
- * when given the current index it will update the index accordingly
- *
- * PARAMETERS:
- * remainder the part of the resource string left over
- * indx the index into the resource string
- * part the parsed off part of the resource string
- *
- * RETURN VALUES:
- * char the token (* or . or ?) preceding the resource part
- * indx the index into the resource string
- * part the parsed off part of the resource string
- *
- * ERRORS: none
- */
-/* ARGSUSED */
-static char
-_get_part (
- char *remainder,
- char **indx,
- char **part)
-{
- char buffer[MAX_BUFFER];
- char *buf_ptr;
- char token = **indx;
- int i = 0;
-
- /*
- * copy the remainder part into the buffer
- */
- buf_ptr = buffer;
- (*indx)++; /* get rid of the token */
- while (**indx && (**indx != '.') && (**indx != '*')) {
- *buf_ptr++ = *(*indx)++;
- if (++i >= MAX_BUFFER - 1)
- break;
- }
- *buf_ptr = '\0';
-
- *part = XtNewString (buffer); /* return a new string to part */
-
- if (strcmp (*indx, "") == 0)
- *indx = NULL;
-
- return (token); /* return the token */
-}
-
-/*
- * NAME: _match_resource_to_widget
- *
- * FUNCTION:
- * This function matches the resource part to the widget name or class
- *
- * PARAMETERS:
- * w the widget to match
- * part the parsed off part of the resource string
- *
- * RETURN VALUES:
- * Boolean true if a match occurs
- *
- * ERRORS: none
- */
-static Boolean
-_match_resource_to_widget (
- Widget w,
- char *part)
-{
- /*
- * Match any widget at this level if the ? is used
- */
- if (strcmp (part, "?") == 0)
- return (True);
-
- /*
- * if the object is really a widget then its name can be matched
- * otherwise only use its class. Note that if you try to reference
- * a widget name when the object is not a widget, you may get a
- * core dump from an invalid pointer reference.
- */
- if (XtIsWidget (w)) {
- if ((strcmp (w->core.name, part) == 0) ||
- (strcmp (w->core.widget_class->core_class.class_name,
- part) == 0))
- return (True);
- else
- return (False);
- } else {
- if ((strcmp (w->core.widget_class->core_class.class_name,
- part) == 0))
- return (True);
- else
- return (False);
- }
-}
-
-/*
- * NAME: _set_and_search
- *
- * FUNCTION:
- * The algorithm to search the widget tree and apply a resource string
- *
- * PARAMETERS:
- * w the widget to match
- * indx the index into the resource string
- * remainder the part of the resource string left over
- * resource the resource string to be matched
- * value the value to be set
- * last_token the last * or . before the final resoruce part
- * last_part the last resource part (e.g. *background)
- *
- * RETURN VALUES: none
- *
- * ERRORS: none
- *
- * ALGORITHM:
- * loop (look at all children)
- * if (resource segment and current widget match)
- * if '.'
- * if at end of resource string
- * set values ( .=over all children
- * *=this widget only)
- * else
- * descend the widget tree
- * and parse off resource segment
- * exit the loop
- * if '*'
- * if at end of resource string
- * set values ( .=over all children
- * *=this widget only)
- * descend and parse
- * else
- * if '.'
- * continue looping
- * if '*'
- * descend but don't parse
- * continue looping
- * end loop
- *
- * NOTE: the _set_resource_values routine will not allow a value to be
- * set on a resource against the rules of the resource database manager
- */
-static void
-_set_and_search (
- Widget w,
- char *indx,
- char *remainder,
- char *resource,
- char *value,
- char last_token,
- char *last_part)
-{
- char *part;
- char *local_index = indx;
- char token;
-
- /*
- * parse off one part, return token and the new index
- */
- token = _get_part (remainder, &local_index, &part);
-
- if (_match_resource_to_widget (w, part)) {
- if (token == '.') {
- if (local_index == NULL) {
- if (last_token == '.') {
- _set_resource_values (w, resource,
- value, last_part);
- } else if (last_token == '*') {
- _set_resource_values (w, resource,
- value, last_part);
- _apply_values_to_children (w,
- remainder, resource, value,
- last_token, last_part);
- }
- } else
- _search_child (w, local_index, remainder,
- resource, value, last_token, last_part);
- return;
- }
- if (token == '*') {
- if (local_index == NULL) {
- if (last_token == '.') {
- _set_resource_values (w, resource,
- value, last_part);
- } else if (last_token == '*') {
- _set_resource_values (w, resource,
- value, last_part);
- _apply_values_to_children ( w,
- remainder, resource, value,
- last_token, last_part);
- }
- } else
- _search_child (w, local_index, remainder,
- resource, value, last_token, last_part);
- }
- } else {/* if the widget name and class don't match the part */
- /* if (token == '.') just continue looping */
-
- if (token == '*') {
- _search_child (w, indx, remainder, resource, value,
- last_token, last_part);
- }
- }
-
- XtFree (part);
-}
-
-/*
- * NAME: _get_last_part
- *
- * FUNCTION:
- * This routine will parse off the last segment of a resource string
- * and its token and return them. the remainder of resource is also
- * returned. strcoll is used to guarantee no problems with
- * international strings.
- *
- * PARAMETERS:
- * remainder the part of the resource string left over
- * part the parsed off part of the resource string
- *
- * RETURN VALUES:
- * char the token (* or . or ?) preceding the resource part
- * remainder the part of the resource string left over
- * part the parsed off part of the resource string
- *
- * ERRORS: none
- */
-static char
-_get_last_part (
- char *remainder,
- char **part)
-{
- char *loose, *tight;
-
- loose = strrchr (remainder, '*');
- tight = strrchr (remainder, '.');
-
- if ((loose == NULL) && (tight == NULL)) {
- *part = XtNewString (remainder);
- return ('.');
- }
- if ((loose == NULL) || (tight && (strcoll (loose, tight) < 0))) {
- *tight++ = '\0'; /* shorten the remainder string */
- *part = XtNewString (tight);
- return ('.');
- }
- if ((tight == NULL) || (loose && (strcoll (tight, loose) < 0))) {
- *loose++ = '\0';
- *part = XtNewString (loose);
- return ('*');
- }
-
- return ('0'); /* error - return 0 */
-}
-
-/*
- * NAME: _search_widget_tree
- *
- * FUNCTION:
- * This function tries to match a resource string to the widgets
- * it applies to. The functions it invokes to do this then set
- * the value for that resource to each widget.
- *
- * The resource string has to be parsed into the following format:
- * resource = App*Form*button1.background
- * remainder = *Form*button1
- * last_part = background last_token = .
- * As the widget tree is recursively descended, these variables are
- * passed. The remainder is parsed at each level in the widget
- * tree as the _set_and_search function attempts to match
- * the resource part (eg. part = Form token = *) to a widget. When
- * the entire resource string has been matched, the _set_resource_values
- * functions is called to apply the value to the widget or widgets.
- *
- * PARAMETERS:
- * w a widget from whose toplevel shell ancestor
- * the search will start
- * resource the resource string to match
- * value the value to apply
- *
- * RETURN VALUES: none
- *
- * ERRORS: none
- */
-static void
-_search_widget_tree (
- Widget w,
- char *resource,
- char *value)
-{
- Widget parent = w;
- char *last_part;
- char *remainder = NULL;
- char last_token;
- char *indx, *copy;
- char *loose, *tight;
- int loose_len, tight_len;
-
- /*
- * Find the root of the tree given any widget
- */
- while (XtParent(parent) != NULL) {
- parent = XtParent(parent);
- }
-#ifdef DEBUG
- if (XtIsWidget (w) && XtIsWidget (parent))
- fprintf (stderr, "widget = %s parent = %s\n",
- w->core.name, parent->core.name);
- else
- fprintf (stderr, "widget = NULL parent = NULL\n");
-#endif
-
- /*
- * parse off the Class name that was prepended to this string in
- * a customizing tool
- */
- loose = strchr (resource, '*');
- tight = strchr (resource, '.');
- if ((loose == NULL) && (tight == NULL))
- return;
-
- loose_len = (loose) ? strlen (loose) : 0;
- tight_len = (tight) ? strlen (tight) : 0;
-
- if ((loose == NULL) || (tight_len > loose_len))
- remainder = XtNewString (tight);
- else if ((tight == NULL) || (loose_len > tight_len))
- remainder = XtNewString (loose);
-
- /*
- * Parse last segment off of resource string, (eg. background, font,
- * etc.)
- */
- last_token = _get_last_part (remainder, &last_part);
- /*
- * this case covers resources of only one level (eg. *background)
- */
- if (strcmp (remainder, "") == 0) {
- _set_resource_values (w, resource, value, last_part);
- if (last_token == '*')
- _apply_values_to_children (parent, remainder, resource,
- value, last_token, last_part);
- /*
- * all other resource strings are recursively applied to the widget tree.
- * Prepend a '.' to the remainder string if there is no leading token.
- */
- } else {
- if (remainder[0] != '*' && remainder[0] != '.') {
- copy = XtMalloc (strlen(remainder) + 2);
- sprintf (copy, ".%s", remainder);
- XtFree (remainder);
- remainder = copy;
- }
- indx = remainder;
- _set_and_search (parent, indx, remainder, resource, value,
- last_token, last_part);
- }
-
- XtFree (remainder);
- XtFree (last_part);
-}
-
-/*
- * NAME: _locate_children
- *
- * FUNCTION:
- * returns a list of all of a widget's children
- *
- * PARAMETERS:
- * w the parent to search for its children
- * children the list of children that is created
- * normal flag for normal children
- * popup flag for popup children
- *
- * RETURN VALUES:
- * int the number of children
- * children the list of children found
- *
- * ERRORS: none
- */
-static int
-_locate_children (
- Widget parent,
- Widget **children)
-{
- CompositeWidget comp = (CompositeWidget) parent;
- Cardinal i;
- int num_children = 0;
- int current = 0;
-
- /*
- * count the number of children
- */
- if (XtIsWidget (parent))
- num_children += parent->core.num_popups;
- if (XtIsComposite (parent))
- num_children += comp->composite.num_children;
- if (num_children == 0) {
- *children = NULL;
- return (0);
- }
-
- *children = (Widget *)
- XtMalloc ((Cardinal) sizeof(Widget) * num_children);
-
- if (XtIsComposite (parent)) {
- for (i=0; i<comp->composite.num_children; i++) {
- (*children)[current] = comp->composite.children[i];
- current++;
- }
- }
-
- if (XtIsWidget (parent)) {
- for (i=0; i<parent->core.num_popups; i++) {
- (*children)[current] = comp->core.popup_list[i];
- current++;
- }
- }
-
- return (num_children);
-}
-
-#ifdef DEBUG
-/*
- * NAME: dump_widget_tree
- *
- * FUNCTION:
- * recursively printout entire widget tree
- *
- * PARAMETERS:
- * w the widget to match
- * indent the amount to indent each line
- *
- * RETURN VALUES: void
- *
- * ERRORS: none
- */
-static void
-dump_widget_tree (
- Widget w,
- int indent)
-{
- int i,j;
- int num_children;
- Widget *children;
-
- /*
- * Recursively search through the children
- */
- num_children = _locate_children (w, &children);
- indent += 2;
- for (i=0; i<num_children; i++) {
- if (children[i] != NULL) {
- for (j=0; j<indent; j++)
- fprintf (stderr, " ");
- if (XtIsWidget (children[i])) {
- fprintf (stderr, "(%s)\t",children[i]->core.name);
- fprintf (stderr, "(%s)\n",
- children[i]->core.widget_class->core_class.class_name);
- } else {
- fprintf (stderr, "(NULL)\t");
- fprintf (stderr, "(%s)\n",
- children[i]->core.widget_class->core_class.class_name);
- }
- }
- dump_widget_tree (children[i], indent);
- }
-
- XtFree ((char *)children);
-}
-#endif
-
-/*
- * NAME: _XtResourceConfiguationEH
- *
- * FUNCTION:
- * This function is the event handler for the on-the-fly communication
- * with a resource customization tool. This event handler must be
- * registered for the toplevel shell of each app. This is best done
- * in the _XtCreatePopupShell and _XtAppCreateShell functions in Xt's
- * Create.c source file.
- *
- * The property used to communicate with a customizing tool is
- * placed on the toplevel shell window of the application. The
- * customizing tool places a property on this window which causes
- * this event handler to be invoked via the PropertyNotify event.
- * This event handler reads the property and then deletes it from
- * the server. The contents of the property are a resource string
- * and value. The event handler then calls functions to walk the
- * applications widget tree, determining which widgets are affected
- * by the resource string, and then applying the value with XtSetValues.
- *
- * PARAMETERS:
- * w the widget that invoked this event handler
- * client_data not used
- * event the event structure
- *
- * RETURN VALUES: none
- *
- * ERRORS: none
- */
-/* ARGSUSED */
-void
-_XtResourceConfigurationEH (
- Widget w,
- XtPointer client_data,
- XEvent *event)
-{
- Atom actual_type;
- int actual_format;
- unsigned long nitems;
- unsigned long leftover;
- unsigned char *data = NULL;
- unsigned long resource_len;
- char *data_ptr;
- char *resource;
- char *value;
-#ifdef DEBUG
- int indent = 0;
-#endif
- XtPerDisplay pd;
-
-#ifdef DEBUG
- fprintf (stderr, "in _XtResourceConfiguationEH atom = %d\n",event->xproperty.atom);
- fprintf (stderr, " window = %x\n", XtWindow (w));
- if (XtIsWidget (w))
- fprintf (stderr, " widget = %x name = %s\n", w, w->core.name);
-#endif
-
- pd = _XtGetPerDisplay (XtDisplay (w));
-
- /*
- * The window on which a customizing tool places the property
- * is determined at this point. It should be the applications
- * toplevel shell window.
- *
- * A customizing tool sends a "ping" to the application on
- * the RCM_INIT property. The application answers the ping
- * by deleting the property.
- */
- if (event->xproperty.atom == pd->rcm_init) {
- XDeleteProperty (XtDisplay(w), XtWindow (w), pd->rcm_init);
-
-#ifdef DEBUG
- if (XtIsWidget (w))
- fprintf (stderr, "%s\n", w->core.name);
- else
- fprintf (stderr, "NULL name\n");
- dump_widget_tree(w, indent);
-
- fprintf (stderr, "answer ping\n");
-#endif
- }
-
- /*
- * This event handler ignores any property notify events that
- * are not RCM_INIT or RCM_DATA
- */
- if (event->xproperty.atom != pd->rcm_data)
- return;
-
- /*
- * Retrieve the data from the property
- */
-#ifdef DEBUG
- fprintf (stderr, "receiving RCM_DATA property\n");
-#endif
- if (XGetWindowProperty (XtDisplay(w),
- XtWindow (w),
- pd->rcm_data, 0L, 8192L,
- TRUE, XA_STRING,
- &actual_type, &actual_format, &nitems, &leftover,
- &data ) == Success && actual_type == XA_STRING
- && actual_format == 8) {
- /*
- * data format is:
- *
- * resource_length, resource, value
- *
- * convert the resource_length to a long, skip over it, put a
- * zero byte at the end of the resource, and pick off the
- * resource and value fields.
- */
- if (data) {
- resource_len = Strtoul ((void *)data, &data_ptr, 10);
- data_ptr++;
-
- data_ptr[resource_len] = '\0';
-
- resource = XtNewString (data_ptr);
- value = XtNewString (&data_ptr[resource_len + 1]);
-#ifdef DEBUG
- fprintf (stderr, "resource_len=%d\n",resource_len);
- fprintf (stderr, "resource = %s\t value = %s\n",
- resource, value);
-#endif
- /*
- * descend the application widget tree and
- * apply the value to the appropriate widgets
- */
- _search_widget_tree (w, resource, value);
-
- XtFree (resource);
- XtFree (value);
- }
- }
-
- if (data)
- XFree ((char *)data);
-}
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