Make NS toolbar use NSString instead of C strings

* src/nsfns.m ([NSString stringWithLispString:]): Ensure that the lisp
object is actually a string.
* src/nsmenu.m (update_frame_tool_bar): Convert to NSString instead of
C strings.
([EmacsToolbar addDisplayItemWithImage:idx:tag:labelText:helpText:enabled:]):
No need to convert to NSString here anymore.

3 files changed, 11 insertions, 12 deletions

diff --git a/src/nsfns.m b/src/nsfns.m
index 7cb2cf72581..643da01989f 100644
--- a/src/nsfns.m
+++ b/src/nsfns.m
@@ -3140,6 +3140,9 @@ all_nonzero_ascii (unsigned char *str, ptrdiff_t n)
    encoded form (e.g. UTF-8).  */
 + (NSString *)stringWithLispString:(Lisp_Object)string
 {
+  if (!STRINGP (string))
+    return nil;
+
   /* Shortcut for the common case.  */
   if (all_nonzero_ascii (SDATA (string), SBYTES (string)))
     return [NSString stringWithCString: SSDATA (string)
diff --git a/src/nsmenu.m b/src/nsmenu.m
index 29201e69079..f42cd387022 100644
--- a/src/nsmenu.m
+++ b/src/nsmenu.m
@@ -1081,9 +1081,7 @@ update_frame_tool_bar_1 (struct frame *f, EmacsToolbar *toolbar)
       struct image *img;
       Lisp_Object image;
       Lisp_Object labelObj;
-      const char *labelText;
       Lisp_Object helpObj;
-      const char *helpText;
 
       /* Check if this is a separator.  */
       if (EQ (TOOLPROP (TOOL_BAR_ITEM_TYPE), Qt))
@@ -1109,11 +1107,9 @@ update_frame_tool_bar_1 (struct frame *f, EmacsToolbar *toolbar)
           idx = -1;
         }
       labelObj = TOOLPROP (TOOL_BAR_ITEM_LABEL);
-      labelText = NILP (labelObj) ? "" : SSDATA (labelObj);
       helpObj = TOOLPROP (TOOL_BAR_ITEM_HELP);
       if (NILP (helpObj))
         helpObj = TOOLPROP (TOOL_BAR_ITEM_CAPTION);
-      helpText = NILP (helpObj) ? "" : SSDATA (helpObj);
 
       /* Ignore invalid image specifications.  */
       if (!valid_image_p (image))
@@ -1135,8 +1131,8 @@ update_frame_tool_bar_1 (struct frame *f, EmacsToolbar *toolbar)
       [toolbar addDisplayItemWithImage: img->pixmap
                                    idx: k++
                                    tag: i
-                             labelText: labelText
-                              helpText: helpText
+                             labelText: [NSString stringWithLispString:labelObj]
+                              helpText: [NSString stringWithLispString:helpObj]
                                enabled: enabled_p];
 #undef TOOLPROP
     }
@@ -1252,8 +1248,8 @@ update_frame_tool_bar (struct frame *f)
 - (void) addDisplayItemWithImage: (EmacsImage *)img
                              idx: (int)idx
                              tag: (int)tag
-                       labelText: (const char *)label
-                        helpText: (const char *)help
+                       labelText: (NSString *)label
+                        helpText: (NSString *)help
                          enabled: (BOOL)enabled
 {
   NSTRACE ("[EmacsToolbar addDisplayItemWithImage: ...]");
@@ -1270,8 +1266,8 @@ update_frame_tool_bar (struct frame *f)
       item = [[[NSToolbarItem alloc] initWithItemIdentifier: identifier]
                autorelease];
       [item setImage: img];
-      [item setLabel: [NSString stringWithUTF8String: label]];
-      [item setToolTip: [NSString stringWithUTF8String: help]];
+      [item setLabel: label];
+      [item setToolTip: help];
       [item setTarget: emacsView];
       [item setAction: @selector (toolbarClicked:)];
       [identifierToItem setObject: item forKey: identifier];
diff --git a/src/nsterm.h b/src/nsterm.h
index 3413bb1f780..75b31c68f1d 100644
--- a/src/nsterm.h
+++ b/src/nsterm.h
@@ -551,8 +551,8 @@ typedef id instancetype;
 - (void) addDisplayItemWithImage: (EmacsImage *)img
                              idx: (int)idx
                              tag: (int)tag
-                       labelText: (const char *)label
-                        helpText: (const char *)help
+                       labelText: (NSString *)label
+                        helpText: (NSString *)help
                          enabled: (BOOL)enabled;
 
 /* delegate methods */