1 files changed, 103 insertions, 0 deletions
diff --git a/plug-ins/imagemap/imap_command.h b/plug-ins/imagemap/imap_command.h
new file mode 100644
index 0000000..1676d2d
--- /dev/null
+++ b/plug-ins/imagemap/imap_command.h
@@ -0,0 +1,103 @@
+/*
+ * This is a plug-in for GIMP.
+ *
+ * Generates clickable image maps.
+ *
+ * Copyright (C) 1998-1999 Maurits Rijk  lpeek.mrijk@consunet.nl
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _IMAP_COMMAND_H
+#define _IMAP_COMMAND_H
+
+#include "imap_object.h"
+
+#define DEFAULT_UNDO_LEVELS 10
+
+typedef struct CommandClass_t CommandClass_t;
+typedef struct Command_t Command_t;
+typedef struct CommandList_t CommandList_t;
+
+typedef enum {CMD_APPEND, CMD_DESTRUCT, CMD_IGNORE} CmdExecuteValue_t;
+
+struct CommandClass_t {
+   void (*destruct)(Command_t*);
+   CmdExecuteValue_t (*execute)(Command_t*);
+   void (*undo)(Command_t*);
+   void (*redo)(Command_t*);
+};
+
+struct Command_t {
+   CommandClass_t      *class;
+   CommandList_t       *sub_commands;
+   const gchar         *name;
+   gboolean             locked;
+};
+
+
+typedef Command_t* (*CommandFactory_t)(void);
+
+typedef void (*CommandListCallbackFunc_t)(Command_t*, gpointer);
+
+typedef struct {
+   CommandListCallbackFunc_t func;
+   gpointer data;
+} CommandListCB_t;
+
+typedef struct {
+   GList *list;
+} CommandListCallback_t;
+
+struct CommandList_t {
+   CommandList_t *parent;
+   gint undo_levels;
+   GList *list;
+   GList *undo;                 /* Pointer to current undo command */
+   GList *redo;                 /* Pointer to current redo command */
+   CommandListCallback_t update_cb;
+};
+
+CommandList_t *command_list_new(gint undo_levels);
+void command_list_destruct(CommandList_t *list);
+void command_list_set_undo_level(gint level);
+void command_list_add(Command_t *command);
+void command_list_remove_all(void);
+void command_list_undo(CommandList_t *list);
+void command_list_undo_all(CommandList_t *list);
+void command_list_redo(CommandList_t *list);
+void command_list_redo_all(CommandList_t *list);
+void command_list_add_update_cb(CommandListCallbackFunc_t func, gpointer data);
+Command_t *command_list_get_redo_command(void);
+
+Command_t *command_new(void (*func)(void));
+Command_t *command_init(Command_t *command, const gchar *name,
+                        CommandClass_t *class);
+void command_execute(Command_t *command);
+void command_undo(Command_t *command);
+void command_redo(Command_t *command);
+void command_set_name(Command_t *command, const gchar *name);
+void command_add_subcommand(Command_t *command, Command_t *sub_command);
+
+void last_command_undo(void);
+void last_command_redo(void);
+
+void subcommand_list_add(CommandList_t *list, Command_t *command);
+Command_t *subcommand_start(const gchar *name);
+void subcommand_end(void);
+
+#define command_lock(command) ((command)->locked = TRUE)
+
+#endif /* _IMAP_COMMAND_H */