#ifndef EL__BFU_LISTBOX_H #define EL__BFU_LISTBOX_H #include "util/align.h" #include "util/lists.h" struct dialog; struct listbox_data; struct listbox_item; struct terminal; struct uri; struct widget_data; void add_dlg_listbox(struct dialog *dlg, void *box_data); enum listbox_match { LISTBOX_MATCH_OK, LISTBOX_MATCH_NO, LISTBOX_MATCH_IMPOSSIBLE, }; /* Structure that can be used for storing all relevant info when traversing * listboxes. */ struct listbox_context { /* The terminal we are running on */ struct terminal *term; /* Used for saving a specific item that should be used later when * traversing listboxes has ended. */ struct listbox_item *item; /* The current listbox widgets data */ struct listbox_data *box; /* The current (hierbox browser) dialog stuff */ struct dialog_data *dlg_data; struct widget_data *widget_data; /* Used when distributing? the current selected to another position */ int dist; /* The offset of the current box from the top */ int offset; }; struct listbox_ops_messages { unsigned char *cant_delete_item; unsigned char *cant_delete_used_item; unsigned char *cant_delete_folder; unsigned char *cant_delete_used_folder; unsigned char *delete_marked_items_title; unsigned char *delete_marked_items; unsigned char *delete_folder_title; unsigned char *delete_folder; unsigned char *delete_item_title; unsigned char *delete_item; unsigned char *clear_all_items_title; unsigned char *clear_all_items; }; /* TODO: We can maybe find a better way of figuring out whether a user of a * generic button handler has implemented all the required functions. --jonas * */ struct listbox_ops { /* Some basic util/object.h wrappers */ void (*lock)(struct listbox_item *); void (*unlock)(struct listbox_item *); int (*is_used)(struct listbox_item *); unsigned char *(*get_text)(struct listbox_item *, struct terminal *); unsigned char *(*get_info)(struct listbox_item *, struct terminal *); struct uri *(*get_uri)(struct listbox_item *); struct listbox_item *(*get_root)(struct listbox_item *); /* Do a search on the item. */ enum listbox_match (*match)(struct listbox_item *, struct terminal *, unsigned char *text); /* Before calling delete() thou shall call can_delete(). */ int (*can_delete)(struct listbox_item *); /* Delete the listbox item object, its data and all nested listboxes. * @last is non zero when either deleting only one item or when * deleting the last item. */ void (*delete)(struct listbox_item *, int last); /* If defined it means that the it will control all drawing of the * listbox item text and what might else be possible on the screen on * line @y from @x and @width chars onwards. */ void (*draw)(struct listbox_item *, struct listbox_context *, int x, int y, int width); struct listbox_ops_messages *messages; }; /* Stores display information about a box. Kept in cdata. */ struct listbox_data { LIST_HEAD(struct listbox_data); struct listbox_ops *ops; /* Backend-provided operations */ struct listbox_item *sel; /* Item currently selected */ struct listbox_item *top; /* Item which is on the top line of the box */ int sel_offset; /* Offset of selected item against the box top */ struct list_head *items; /* The list being displayed */ }; enum listbox_item_type { BI_LEAF, BI_FOLDER, BI_SEPARATOR }; /* An item in a box */ struct listbox_item { LIST_HEAD(struct listbox_item); /* The list may be empty for leaf nodes or non-hiearchic listboxes */ struct list_head child; enum listbox_item_type type; int depth; unsigned int expanded:1; /* Only valid if this is a BI_FOLDER */ unsigned int visible:1; /* Is this item visible? */ unsigned int marked:1; void *udata; }; extern struct widget_ops listbox_ops; void dlg_format_listbox(struct terminal *, struct widget_data *, int, int *, int, int, int *, enum format_align); struct listbox_item *traverse_listbox_items_list(struct listbox_item *, struct listbox_data *, int, int, int (*)(struct listbox_item *, void *, int *), void *); void listbox_sel_move(struct widget_data *, int); void listbox_sel(struct widget_data *widget_data, struct listbox_item *item); struct listbox_data *get_listbox_widget_data(struct widget_data *widget_data); #define get_dlg_listbox_data(dlg_data) \ get_listbox_widget_data(dlg_data->widgets_data) #endif