This commit was generated by cvs2svn to compensate for changes in r1383,

[chise/xemacs-chise.git.1] / lwlib / lwlib.c

diff --git a/lwlib/lwlib.c b/lwlib/lwlib.c
index 69a5c04..27f7a08 100644 (file)
--- a/lwlib/lwlib.c
+++ b/lwlib/lwlib.c
@@ -40,6 +40,9 @@ Boston, MA 02111-1307, USA.  */
 #endif
 #ifdef NEED_MOTIF
 #include "lwlib-Xm.h"
+#ifdef LWLIB_WIDGETS_MOTIF
+#include <Xm/Xm.h>
+#endif
 #endif
 #ifdef NEED_ATHENA
 #include "lwlib-Xaw.h"
@@ -67,13 +70,13 @@ int lw_menu_accelerate = False;
 
 \f
 /* Forward declarations */
-static void
-instantiate_widget_instance (widget_instance *instance);
+static void instantiate_widget_instance (widget_instance *instance);
+static void free_widget_value_args (widget_value* wv);
 
 \f
 /* utility functions for widget_instance and widget_info */
 static char *
-safe_strdup (CONST char *s)
+safe_strdup (const char *s)
 {
   char *result;
   if (! s) return 0;
@@ -108,7 +111,7 @@ malloc_widget_value (void)
     }
   if (wv)
     {
-      memset (wv, 0, sizeof (widget_value));
+      memset (wv, '\0', sizeof (widget_value));
     }
   return wv;
 }
@@ -153,14 +156,9 @@ free_widget_value_contents (widget_value *wv)
       free_widget_value_tree (wv->contents);
       wv->contents = (widget_value *) 0xDEADBEEF;
     }
-  if (wv->args && wv->nargs)
-    {
-      if (wv->free_args)
-       free (wv->args);
-      wv->args = (ArgList) 0xDEADBEEF;
-      wv->nargs = 0;
-      wv->free_args = 0;
-    }
+
+  free_widget_value_args (wv);
+
   if (wv->next)
     {
       free_widget_value_tree (wv->next);
@@ -190,7 +188,7 @@ copy_scrollbar_values (widget_value *val, widget_value *copy)
   if (val->scrollbar_data)
     *copy->scrollbar_data = *val->scrollbar_data;
   else
-    memset (copy->scrollbar_data, 0, sizeof (scrollbar_values));
+    memset (copy->scrollbar_data, '\0', sizeof (scrollbar_values));
 }
 
 /*
@@ -237,6 +235,40 @@ merge_scrollbar_values (widget_value *old, widget_value *new)
 
 #endif /* NEED_SCROLLBARS */
 
+#ifdef HAVE_WIDGETS
+/*
+ * Return true if old->args was not equivalent
+ * to new->args.
+ */
+static Boolean
+merge_widget_value_args (widget_value *old, widget_value *new)
+{
+  Boolean changed = False;
+
+  if (new->args && !old->args)
+    {
+      lw_copy_widget_value_args (new, old);
+      changed = True;
+    }
+  /* Generally we don't want to lose values that are already in the
+     widget. */
+  else if (!new->args && old->args)
+    {
+      lw_copy_widget_value_args (old, new);
+      changed = True;
+    }
+  else if (new->args && old->args)
+    {
+      /* #### Do something more sensible here than just copying the
+         new values (like actually merging the values). */
+      lw_copy_widget_value_args (new, old);
+      changed = True;
+    }
+
+  return changed;
+}
+#endif /* HAVE_WIDGETS */
+
 /* Make a complete copy of a widget_value tree.  Store CHANGE into
    the widget_value tree's `change' field. */
 
@@ -269,13 +301,8 @@ copy_widget_value_tree (widget_value *val, change_type change)
       copy->next = copy_widget_value_tree (val->next, change);
       copy->toolkit_data = NULL;
       copy->free_toolkit_data = False;
-      if (val->nargs)
-       {
-         copy->args = (ArgList)malloc (sizeof (Arg) * val->nargs);
-         memcpy (copy->args, val->args, sizeof(Arg) * val->nargs);
-         copy->nargs = val->nargs;
-         copy->free_args = True;
-       }
+
+      lw_copy_widget_value_args (val, copy);
 #ifdef NEED_SCROLLBARS
       copy_scrollbar_values (val, copy);
 #endif
@@ -302,7 +329,7 @@ replace_widget_value_tree (widget_value *node, widget_value *newtree)
 }
 
 static widget_info *
-allocate_widget_info (CONST char *type, CONST char *name,
+allocate_widget_info (const char *type, const char *name,
                       LWLIB_ID id, widget_value *val,
                      lw_callback pre_activate_cb, lw_callback selection_cb,
                      lw_callback post_activate_cb)
@@ -330,7 +357,7 @@ free_widget_info (widget_info *info)
   safe_free_str (info->type);
   safe_free_str (info->name);
   free_widget_value_tree (info->val);
-  memset ((void*)info, 0xDEADBEEF, sizeof (widget_info));
+  memset (info, '\0', sizeof (widget_info));
   free (info);
 }
 
@@ -365,7 +392,7 @@ allocate_widget_instance (widget_info *info, Widget parent, Boolean pop_up_p)
 static void
 free_widget_instance (widget_instance *instance)
 {
-  memset ((void *) instance, 0xDEADBEEF, sizeof (widget_instance));
+  memset (instance, '\0', sizeof (widget_instance));
   free (instance);
 }
 
@@ -475,7 +502,7 @@ find_instance (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 \f
 /* utility function for widget_value */
 static Boolean
-safe_strcmp (CONST char *s1, CONST char *s2)
+safe_strcmp (const char *s1, const char *s2)
 {
   if (!!s1 ^ !!s2) return True;
   return (s1 && s2) ? strcmp (s1, s2) : s1 ? False : !!s2;
@@ -590,6 +617,14 @@ merge_widget_value (widget_value *val1, widget_value *val2, int level)
       change = max (change, INVISIBLE_CHANGE);
       val1->call_data = val2->call_data;
     }
+#ifdef HAVE_WIDGETS
+  if (merge_widget_value_args (val1, val2))
+    {
+      EXPLAIN (val1->name, change, VISIBLE_CHANGE, "widget change", 0, 0);
+      change = max (change, VISIBLE_CHANGE);
+    }
+#endif
+
 #ifdef NEED_SCROLLBARS
   if (merge_scrollbar_values (val1, val2))
     {
@@ -654,7 +689,7 @@ merge_widget_value (widget_value *val1, widget_value *val2, int level)
 \f
 /* modifying the widgets */
 static Widget
-name_to_widget (widget_instance *instance, CONST char *name)
+name_to_widget (widget_instance *instance, const char *name)
 {
   Widget widget = NULL;
 
@@ -791,7 +826,7 @@ initialize_widget_instance (widget_instance *instance)
 
 
 static widget_creation_function
-find_in_table (CONST char *type, widget_creation_entry *table)
+find_in_table (const char *type, widget_creation_entry *table)
 {
   widget_creation_entry *cur;
   for (cur = table; cur->type; cur++)
@@ -801,7 +836,7 @@ find_in_table (CONST char *type, widget_creation_entry *table)
 }
 
 static Boolean
-dialog_spec_p (CONST char *name)
+dialog_spec_p (const char *name)
 {
   /* return True if name matches [EILPQeilpq][1-9][Bb] or
      [EILPQeilpq][1-9][Bb][Rr][1-9] */
@@ -885,7 +920,7 @@ instantiate_widget_instance (widget_instance *instance)
 }
 
 void
-lw_register_widget (CONST char *type, CONST char *name,
+lw_register_widget (const char *type, const char *name,
                     LWLIB_ID id, widget_value *val,
                    lw_callback pre_activate_cb, lw_callback selection_cb,
                    lw_callback post_activate_cb)
@@ -921,7 +956,7 @@ lw_make_widget (LWLIB_ID id, Widget parent, Boolean pop_up_p)
 }
 
 Widget
-lw_create_widget (CONST char *type, CONST char *name,
+lw_create_widget (const char *type, const char *name,
                   LWLIB_ID id, widget_value *val,
                  Widget parent, Boolean pop_up_p, lw_callback pre_activate_cb,
                  lw_callback selection_cb, lw_callback post_activate_cb)
@@ -1317,13 +1352,82 @@ lw_show_busy (Widget w, Boolean busy)
 void lw_add_value_args_to_args (widget_value* wv, ArgList addto, int* offset)
 {
   int i;
-  if (wv->nargs && wv->args)
+  if (wv->args && wv->args->nargs)
     {
-      for (i = 0; i<wv->nargs; i++)
+      for (i = 0; i<wv->args->nargs; i++)
        {
-         addto[i + *offset] = wv->args[i];
+         addto[i + *offset] = wv->args->args[i];
        }
-      *offset += wv->nargs;
+      *offset += wv->args->nargs;
+    }
+}
+
+void lw_add_widget_value_arg (widget_value* wv, String name, XtArgVal value)
+{
+  int i = 0;
+  if (!wv->args)
+    {
+      wv->args = (widget_args *) malloc (sizeof (widget_args));
+      memset (wv->args, '\0', sizeof (widget_args));
+      wv->args->ref_count = 1;
+      wv->args->nargs = 0;
+      wv->args->args = (ArgList) malloc (sizeof (Arg) * 10);
+      memset (wv->args->args, '\0', sizeof (Arg) * 10);
+    }
+  
+  if (wv->args->nargs > 10)
+    return;
+
+  /* If the arg is already there then we must replace it. */
+  for (i = 0; i < wv->args->nargs; i++)
+    {
+      if (!strcmp (wv->args->args[i].name, name))
+       {
+         XtSetArg (wv->args->args [i], name, value);
+         break;
+       }
+    }
+  if (i >= wv->args->nargs)
+    {
+      XtSetArg (wv->args->args [wv->args->nargs], name, value);   wv->args->nargs++;
+    }
+}
+
+static void free_widget_value_args (widget_value* wv)
+{
+  if (wv->args)
+    {
+      if (--wv->args->ref_count <= 0)
+       {
+#ifdef LWLIB_WIDGETS_MOTIF
+         int i;
+         for (i = 0; i < wv->args->nargs; i++)
+           {
+             if (!strcmp (wv->args->args[i].name, XmNfontList))
+               XmFontListFree ((XmFontList)wv->args->args[i].value);
+           }
+#endif
+         free (wv->args->args);
+         free (wv->args);
+         wv->args = 0;
+       }
+    }
+}
+
+void lw_copy_widget_value_args (widget_value* val, widget_value* copy)
+{
+  if (val == copy || val->args == copy->args)
+    return;
+
+  if (copy->args)
+    {
+      free_widget_value_args (copy);
+    }
+
+  if (val->args)
+    {
+      copy->args = val->args;
+      copy->args->ref_count++;
     }
 }