Ticket #212: implemented keybindings for ButtonBar.

First step: renamed type of dialog command execution function.
Made execution function more flexible: added parameters for
sender and receiver widgets and user data.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

edit/edit-impl.h

@@ -143,6 +143,7 @@ typedef enum {
 } LineBreaks;
 #define LB_NAMES (LB_MAC + 1)
 
+struct Widget;
 struct WMenuBar;
 
 extern const char VERTICAL_MAGIC[5];
@@ -151,7 +152,8 @@ extern int enable_show_tabs_tws;
 int edit_drop_hotkey_menu (WEdit *e, int key);
 void edit_menu_cmd (WEdit *e);
 void edit_init_menu (struct WMenuBar *menubar);
-cb_ret_t edit_menu_execute (int command);
+cb_ret_t edit_command_execute (struct Widget *sender, struct Widget *receiver,
+				int command, const void *data);
 void menu_save_mode_cmd (void);
 int edit_translate_key (WEdit *edit, long x_key, int *cmd, int *ch);
 int edit_get_byte (WEdit * edit, long byte_index);

edit/editmenu.c

@@ -53,8 +53,11 @@
 #include "edit-widget.h"
 
 cb_ret_t
-edit_menu_execute (int command)
+edit_command_execute (Widget *sender, Widget *receiver, int command, const void *data)
 {
+    (void) sender;
+    (void) receiver;
+    (void) data;
     edit_execute_key_command (wedit, command, -1);
     edit_update_screen (wedit);
     return MSG_HANDLED;

edit/editwidget.c

@@ -231,7 +231,7 @@ edit_file (const char *_file, int line)
 
     add_widget (edit_dlg, wedit);
 
-    edit_dlg->menu_executor = edit_menu_execute;
+    edit_dlg->execute = edit_command_execute;
     edit_dlg->get_shortcut = edit_get_shortcut;
     edit_menubar = menubar_new (0, 0, COLS, NULL);
     add_widget (edit_dlg, edit_menubar);

src/dialog.c

@@ -440,22 +440,20 @@ int dlg_overlap (Widget *a, Widget *b)
 Widget *
 find_widget_type (Dlg_head *h, callback_fn callback)
 {
-    Widget *w;
-    Widget *item;
-    int i;
+    Widget *w = NULL;
 
-    if (!h)
-	return 0;
-    if (!h->current)
-	return 0;
+    if ((h != NULL) && (h->current != NULL)) {
+	int i;
+	Widget *item;
 
-    w = 0;
-    for (i = 0, item = h->current; i < h->count; i++, item = item->next) {
-	if (item->callback == callback) {
-	    w = item;
-	    break;
+	for (i = 0, item = h->current; i < h->count; i++, item = item->next) {
+	    if (item->callback == callback) {
+		w = item;
+		break;
+	    }
 	}
     }
+
     return w;
 }
 

src/dialog.h

@@ -33,6 +33,8 @@
 #define B_HELP		3
 #define B_USER          100
 
+typedef struct Widget Widget;
+
 /* Widget messages */
 typedef enum {
     WIDGET_INIT,		/* Initialize widget */
@@ -81,11 +83,19 @@ typedef enum {
 
 
 /* Dialog callback */
-struct Dlg_head;
+typedef struct Dlg_head Dlg_head;
 typedef cb_ret_t (*dlg_cb_fn)(struct Dlg_head *h, dlg_msg_t msg, int parm);
 
-/* menu command execution */
-typedef cb_ret_t (*menu_exec_fn) (int command);
+/* keybinding commands execution
+   sender: the widget that sent the command with data
+           currently only two modes are available:
+           sender == NULL: the command was sent by shortcut
+           sender != NULL: the command was sent by menu
+   receiver: the widget that received command and data
+           should be NULL if sender is menu or buttonbar
+*/
+typedef cb_ret_t (*dlg_exec_fn) (Widget *sender, Widget *receiver,
+		    int command, const void *data);
 
 /* get string representation of shortcut assigned  with command */
 /* as menu is a widget of dialog, ask dialog about shortcut string */
@@ -98,7 +108,7 @@ typedef char * (*dlg_shortcut_str) (int command);
 #define DLG_HOT_NORMALC(h)	((h)->color[2])
 #define DLG_HOT_FOCUSC(h)	((h)->color[3])
 
-typedef struct Dlg_head {
+struct Dlg_head {
     /* Set by the user */
     int flags;				/* User flags */
     const char *help_ctx;		/* Name of the help entry */
@@ -122,16 +132,15 @@ typedef struct Dlg_head {
     struct Widget *current;		/* Curently active widget */
     void *data;				/* Data can be passed to dialog */
     dlg_cb_fn callback;
-    menu_exec_fn menu_executor;		/* Execute menu commands */
+    dlg_exec_fn execute;		/* Execute commands, associated with key bindings  */
     dlg_shortcut_str get_shortcut;	/* Shortcut string */
     struct Dlg_head *parent;		/* Parent dialog */
-} Dlg_head;
+};
 
 /* Color styles for normal and error dialogs */
 extern int dialog_colors[4];
 extern int alarm_colors[4];
 
-typedef struct Widget Widget;
 
 /* Widget callback */
 typedef cb_ret_t (*callback_fn) (Widget *widget, widget_msg_t msg, int parm);

src/main.c

@@ -1126,10 +1126,15 @@ ctl_x_cmd (void)
 }
 
 static cb_ret_t
-midnight_execute_cmd (int command)
+midnight_execute_cmd (Widget *sender, Widget *receiver,
+			int command, const void *data)
 {
     cb_ret_t res = MSG_HANDLED;
 
+    (void) sender;
+    (void) receiver;
+    (void) data;
+
     switch (command) {
     case CK_AddHotlist:
         add2hotlist_cmd ();
@@ -1584,7 +1589,7 @@ midnight_callback (struct Dlg_head *h, dlg_msg_t msg, int parm)
 	    ctl_x_map_enabled = 0;
 	    for (i = 0; main_x_map[i].key; i++)
 		if (parm == main_x_map[i].key)
-		    return midnight_execute_cmd (main_x_map[i].command);
+		    return midnight_execute_cmd (NULL, NULL, main_x_map[i].command, NULL);
 	}
 
 	/* FIXME: should handle all menu shortcuts before this point */
@@ -1684,12 +1689,11 @@ midnight_callback (struct Dlg_head *h, dlg_msg_t msg, int parm)
 	    ctl_x_map_enabled = 0;
 	    for (i = 0; main_x_map[i].key; i++)
 		if (parm == main_x_map[i].key)
-		    return midnight_execute_cmd (main_x_map[i].command);
+		    return midnight_execute_cmd (NULL, NULL, main_x_map[i].command, NULL);
 	} else {
-	    for (i = 0; main_map[i].key; i++) {
+	    for (i = 0; main_map[i].key; i++)
 		if (parm == main_map[i].key)
-		    return midnight_execute_cmd (main_map[i].command);
-	    }
+		    return midnight_execute_cmd (NULL, NULL, main_map[i].command, NULL);
 	}
 	return MSG_NOT_HANDLED;
 
@@ -1781,7 +1785,7 @@ load_hint (int force)
 static void
 setup_panels_and_run_mc (void)
 {
-    midnight_dlg->menu_executor = midnight_execute_cmd;
+    midnight_dlg->execute = midnight_execute_cmd;
     midnight_dlg->get_shortcut = midnight_get_shortcut;
 
     add_widget (midnight_dlg, the_menubar);

src/menu.c

@@ -42,6 +42,8 @@
 
 int menubar_visible = 1;	/* This is the new default */
 
+static cb_ret_t menubar_callback (Widget *w, widget_msg_t msg, int parm);
+
 menu_entry_t *
 menu_entry_create (const char *name, int command)
 {
@@ -311,7 +313,9 @@ menubar_execute (WMenuBar *menubar)
     if ((entry != NULL) && (entry->command != 0)) {
 	is_right = (menubar->selected != 0);
 	menubar_finish (menubar);
-	menubar->widget.parent->menu_executor (entry->command);
+	menubar->widget.parent->execute (
+			find_widget_type (menubar->widget.parent, menubar_callback),
+			NULL, entry->command, NULL);
 	do_refresh ();
     }
 }