src/widget.h

   1
   2 /** \file widget.h
   3  *  \brief Header: widgets
   4  */
   5
   6 #ifndef MC_WIDGET_H
   7 #define MC_WIDGET_H
   8
   9 #include "lib/global.h"
  10 #include "dialog.h"             /* Widget */
  11
  12 /* Completion stuff */
  13
  14 typedef enum {
  15     INPUT_COMPLETE_FILENAMES = 1<<0,
  16     INPUT_COMPLETE_HOSTNAMES = 1<<1,
  17     INPUT_COMPLETE_COMMANDS  = 1<<2,
  18     INPUT_COMPLETE_VARIABLES = 1<<3,
  19     INPUT_COMPLETE_USERNAMES = 1<<4,
  20     INPUT_COMPLETE_CD        = 1<<5,
  21     INPUT_COMPLETE_SHELL_ESC = 1<<6,
  22
  23     INPUT_COMPLETE_DEFAULT   = INPUT_COMPLETE_FILENAMES
  24                              | INPUT_COMPLETE_HOSTNAMES
  25                              | INPUT_COMPLETE_VARIABLES
  26                              | INPUT_COMPLETE_USERNAMES
  27 } INPUT_COMPLETE_FLAGS;
  28
  29 /* Please note that the first element in all the widgets is a     */
  30 /* widget variable of type Widget.  We abuse this fact everywhere */
  31
  32 /* button callback */
  33 typedef int (*bcback) (int);
  34
  35 /* structure for label (caption) with hotkey, if original text does not contain
  36  * hotkey, only start is valid and is equal to original text
  37  * hotkey is defined as char*, but mc support only singlebyte hotkey
  38  */
  39 struct hotkey_t {
  40     char *start;
  41     char *hotkey;
  42     char *end;
  43 };
  44
  45 /* used in static definition of menu entries */
  46 #define NULL_HOTKEY {NULL, NULL, NULL}
  47
  48 /* create hotkey from text */
  49 struct hotkey_t parse_hotkey (const char *text);
  50 /* release hotkey, free all mebers of hotkey_t */
  51 void release_hotkey (const struct hotkey_t hotkey);
  52 /* return width on terminal of hotkey */
  53 int hotkey_width (const struct hotkey_t hotkey);
  54
  55 typedef struct WButton {
  56     Widget widget;
  57     int action;                 /* what to do when pressed */
  58     int selected;               /* button state */
  59
  60 #define HIDDEN_BUTTON           0
  61 #define NARROW_BUTTON           1
  62 #define NORMAL_BUTTON           2
  63 #define DEFPUSH_BUTTON          3
  64     unsigned int flags;         /* button flags */
  65     struct hotkey_t text;       /* text of button, contain hotkey too */
  66     int hotpos;                 /* offset hot KEY char in text */
  67     bcback callback;            /* Callback function */
  68 } WButton;
  69
  70 typedef struct WRadio {
  71     Widget widget;
  72     unsigned int state;         /* radio button state */
  73     int pos, sel;
  74     int count;                  /* number of members */
  75     struct hotkey_t *texts;     /* texts of labels */
  76 } WRadio;
  77
  78 typedef struct WCheck {
  79     Widget widget;
  80
  81 #define C_BOOL                  0x0001
  82 #define C_CHANGE                0x0002
  83     unsigned int state;         /* check button state */
  84     struct hotkey_t text;               /* text of check button */
  85 } WCheck;
  86
  87 typedef struct WGauge {
  88     Widget widget;
  89     int shown;
  90     int max;
  91     int current;
  92 } WGauge;
  93
  94 GList *history_get (const char *input_name);
  95 void history_put (const char *input_name, GList *h);
  96 /* for repositioning of history dialog we should pass widget to this
  97  * function, as position of history dialog depends on widget's position */
  98 char *show_hist (GList *history, Widget *widget);
  99
 100 typedef struct {
 101     Widget widget;
 102     int  point;            /* cursor position in the input line in characters */
 103     int  mark;                  /* The mark position in characters */
 104     int  term_first_shown;      /* column of the first shown character */
 105     size_t current_max_size;    /* Maximum length of input line (bytes) */
 106     int  field_width;           /* width of the editing field */
 107     int  color;                 /* color used */
 108     int  first;                 /* Is first keystroke? */
 109     int  disable_update;        /* Do we want to skip updates? */
 110     int  is_password;           /* Is this a password input line? */
 111     char *buffer;               /* pointer to editing buffer */
 112     GList *history;             /* The history */
 113     int  need_push;             /* need to push the current Input on hist? */
 114     char **completions;         /* Possible completions array */
 115     INPUT_COMPLETE_FLAGS completion_flags;      /* INPUT_COMPLETE* bitwise flags(complete.h) */
 116     char *history_name;         /* name of history for loading and saving */
 117     char charbuf[MB_LEN_MAX];   /* buffer for multibytes characters */
 118     size_t charpoint;         /* point to end of mulibyte sequence in charbuf */
 119 } WInput;
 120
 121 /* For history load-save functions */
 122 #define INPUT_LAST_TEXT ((char *) 2)
 123
 124 typedef struct {
 125     Widget widget;
 126     int    auto_adjust_cols;    /* compute widget.cols from strlen(text)? */
 127     char   *text;
 128     int    transparent;         /* Paint in the default color fg/bg */
 129 } WLabel;
 130
 131 typedef struct WLEntry {
 132     char *text;                 /* Text to display */
 133     int  hotkey;
 134     void *data;                 /* Client information */
 135     struct WLEntry *next;
 136     struct WLEntry *prev;
 137 } WLEntry;
 138
 139 struct WListbox;
 140 typedef struct WListbox WListbox;
 141 typedef int (*lcback) (WListbox *);
 142
 143 /* Callback should return one of the following values */
 144 enum {
 145     LISTBOX_CONT,               /* continue */
 146     LISTBOX_DONE                /* finish dialog */
 147 };
 148
 149 struct WListbox {
 150     Widget widget;
 151     WLEntry *list;              /* Pointer to the circular double linked list. */
 152     WLEntry *top;               /* The first element displayed */
 153     WLEntry *current;           /* The current element displayed */
 154     int pos;                    /* Cur. pos, must be kept in sync with current */
 155     int count;                  /* Number of items in the listbox */
 156     int allow_duplicates;       /* Do we allow duplicates on the list? */
 157     int scrollbar;              /* Draw a scrollbar? */
 158     lcback cback;               /* The callback function */
 159     int cursor_x, cursor_y;     /* Cache the values */
 160 };
 161
 162 /* number of bttons in buttonbar */
 163 #define BUTTONBAR_LABELS_NUM    10
 164
 165 typedef struct WButtonBar {
 166     Widget widget;
 167     gboolean visible;           /* Is it visible? */
 168     int btn_width;              /* width of one button */
 169     struct {
 170         char *text;
 171         unsigned long command;
 172         Widget *receiver;
 173     } labels [BUTTONBAR_LABELS_NUM];
 174 } WButtonBar;
 175
 176 typedef struct WGroupbox {
 177     Widget widget;
 178     char *title;
 179 } WGroupbox;
 180
 181
 182 /* Default callback for widgets */
 183 cb_ret_t default_proc (widget_msg_t msg, int parm);
 184
 185 /* Constructors */
 186 WButton *button_new   (int y, int x, int action, int flags, const char *text,
 187                       bcback callback);
 188 WRadio  *radio_new    (int y, int x, int count, const char **text);
 189 WCheck  *check_new    (int y, int x, int state,  const char *text);
 190 WInput  *input_new    (int y, int x, int color, int len, const char *text, const char *histname, INPUT_COMPLETE_FLAGS completion_flags);
 191 WLabel  *label_new    (int y, int x, const char *text);
 192 WGauge  *gauge_new    (int y, int x, int shown, int max, int current);
 193 WListbox *listbox_new (int y, int x, int height, int width, lcback callback);
 194 WButtonBar *buttonbar_new (gboolean visible);
 195 WGroupbox *groupbox_new (int y, int x, int height, int width, const char *title);
 196
 197 /* Input lines */
 198 void winput_set_origin (WInput *i, int x, int field_width);
 199 cb_ret_t handle_char (WInput *in, int c_code);
 200 int is_in_input_map (WInput *in, int c_code);
 201 void update_input (WInput *in, int clear_first);
 202 void new_input (WInput *in);
 203 void stuff (WInput *in, const char *text, int insert_extra_space);
 204 void input_disable_update (WInput *in);
 205 void input_set_prompt (WInput *in, int field_len, const char *prompt);
 206 void input_enable_update (WInput *in);
 207 void input_set_point (WInput *in, int pos);
 208 void input_show_cursor (WInput *in);
 209 void assign_text (WInput *in, const char *text);
 210 cb_ret_t input_callback (Widget *, widget_msg_t msg, int parm);
 211
 212 /* Labels */
 213 void label_set_text (WLabel *label, const char *text);
 214
 215 /* Gauges */
 216 void gauge_set_value (WGauge *g, int max, int current);
 217 void gauge_show (WGauge *g, int shown);
 218
 219 /* Buttons */
 220 /* return copy of button text */
 221 const char *button_get_text (const WButton *b);
 222 void button_set_text (WButton *b, const char *text);
 223 int button_get_len (const WButton *b);
 224
 225 /* Listbox manager */
 226 WLEntry *listbox_get_data (WListbox *l, int pos);
 227
 228 /* search text int listbox entries */
 229 WLEntry *listbox_search_text (WListbox *l, const char *text);
 230 void listbox_select_entry (WListbox *l, WLEntry *dest);
 231 void listbox_select_by_number (WListbox *l, int n);
 232 void listbox_select_last (WListbox *l);
 233 void listbox_select_first (WListbox *l);
 234 void listbox_remove_current (WListbox *l, int force);
 235 void listbox_remove_list (WListbox *l);
 236 void listbox_get_current (WListbox *l, char **string, char **extra);
 237
 238 enum append_pos {
 239     LISTBOX_APPEND_AT_END = 0,  /* append at the end */
 240     LISTBOX_APPEND_BEFORE,      /* insert before current */
 241     LISTBOX_APPEND_AFTER,       /* insert after current */
 242     LISTBOX_APPEND_SORTED       /* insert alphabetically */
 243 };
 244
 245 char *listbox_add_item (WListbox *l, enum append_pos pos, int
 246                         hotkey, const char *text, void *data);
 247
 248 struct global_keymap_t;
 249
 250 WButtonBar *find_buttonbar (const Dlg_head *h);
 251 void buttonbar_set_label (WButtonBar *bb, int idx, const char *text,
 252                             const struct global_keymap_t *keymap, const Widget *receiver);
 253 #define buttonbar_clear_label(bb, idx, recv) buttonbar_set_label (bb, idx, "", NULL, recv)
 254 void buttonbar_set_visible (WButtonBar *bb, gboolean visible);
 255 void buttonbar_redraw (WButtonBar *bb);
 256
 257 void free_completions (WInput *in);
 258 void complete (WInput *in);
 259
 260 #endif                                  /* MC_WIDGET_H */