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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.
+
+******************************************************************/
+
+#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>
+
+#ifdef DEBUG
+#include <stdio.h>
+#endif
+
+#define MAX_BUFFER 512
+
+static void _search_child();
+static void _set_and_search();
+static int _locate_children();
+
+#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 (w, resource, value, last_part)
+ 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;
+ int 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 (w, remainder, resource, value, last_token, last_part)
+ 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 (w, indx, remainder, resource, value, last_token, last_part)
+ 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 (remainder, indx, 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 (w, part)
+ 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 (w, indx, remainder, resource, value, last_token, last_part)
+ 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 (remainder, 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 (w, resource, value)
+ Widget w;
+ char *resource;
+ char *value;
+{
+ Widget parent = w;
+ char *last_part;
+ char *remainder;
+ 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 (parent, children)
+ Widget parent;
+ Widget **children;
+{
+ CompositeWidget comp = (CompositeWidget) parent;
+ int 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 (w, indent)
+ 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 (w, client_data, event)
+ 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 (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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 21:38:56 +0000