src/viewer/dialogs.c

   1 /*
   2    Internal file viewer for the Midnight Commander
   3    Function for paint dialogs
   4
   5    Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
   6    2004, 2005, 2006, 2007, 2009, 2011
   7    The Free Software Foundation, Inc.
   8
   9    Written by:
  10    Miguel de Icaza, 1994, 1995, 1998
  11    Janne Kukonlehto, 1994, 1995
  12    Jakub Jelinek, 1995
  13    Joseph M. Hinkle, 1996
  14    Norbert Warmuth, 1997
  15    Pavel Machek, 1998
  16    Roland Illig <roland.illig@gmx.de>, 2004, 2005
  17    Slava Zanko <slavazanko@google.com>, 2009
  18    Andrew Borodin <aborodin@vmail.ru>, 2009
  19    Ilia Maslakov <il.smind@gmail.com>, 2009
  20
  21    This file is part of the Midnight Commander.
  22
  23    The Midnight Commander is free software: you can redistribute it
  24    and/or modify it under the terms of the GNU General Public License as
  25    published by the Free Software Foundation, either version 3 of the License,
  26    or (at your option) any later version.
  27
  28    The Midnight Commander is distributed in the hope that it will be useful,
  29    but WITHOUT ANY WARRANTY; without even the implied warranty of
  30    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  31    GNU General Public License for more details.
  32
  33    You should have received a copy of the GNU General Public License
  34    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  35  */
  36
  37 #include <config.h>
  38
  39 #include <stdlib.h>
  40 #include <sys/types.h>
  41
  42 #include "lib/global.h"
  43 #include "lib/search.h"
  44 #include "lib/strutil.h"
  45 #include "lib/widget.h"
  46 #ifdef HAVE_CHARSET
  47 #include "lib/charsets.h"
  48 #endif
  49
  50 #include "src/history.h"
  51
  52 #include "internal.h"
  53
  54 /*** global variables ****************************************************************************/
  55
  56 mcview_search_options_t mcview_search_options = {
  57     .type = MC_SEARCH_T_NORMAL,
  58     .case_sens = FALSE,
  59     .backwards = FALSE,
  60     .whole_words = FALSE,
  61     .all_codepages = FALSE
  62 };
  63
  64 /*** file scope macro definitions ****************************************************************/
  65
  66 /*** file scope type declarations ****************************************************************/
  67
  68 /*** file scope variables ************************************************************************/
  69
  70 /*** file scope functions ************************************************************************/
  71 /* --------------------------------------------------------------------------------------------- */
  72
  73 /* --------------------------------------------------------------------------------------------- */
  74 /*** public functions ****************************************************************************/
  75 /* --------------------------------------------------------------------------------------------- */
  76
  77 gboolean
  78 mcview_dialog_search (mcview_t * view)
  79 {
  80     int SEARCH_DLG_MIN_HEIGHT = 12;
  81     int SEARCH_DLG_HEIGHT_SUPPLY = 3;
  82     int SEARCH_DLG_WIDTH = 58;
  83
  84     char *exp = NULL;
  85     int qd_result;
  86
  87     size_t num_of_types;
  88     gchar **list_of_types = mc_search_get_types_strings_array (&num_of_types);
  89     int SEARCH_DLG_HEIGHT = SEARCH_DLG_MIN_HEIGHT + num_of_types - SEARCH_DLG_HEIGHT_SUPPLY;
  90
  91     QuickWidget quick_widgets[] = {
  92         QUICK_BUTTON (6, 10, SEARCH_DLG_HEIGHT - 3, SEARCH_DLG_HEIGHT, N_("&Cancel"), B_CANCEL,
  93                       NULL),
  94         QUICK_BUTTON (2, 10, SEARCH_DLG_HEIGHT - 3, SEARCH_DLG_HEIGHT, N_("&OK"), B_ENTER, NULL),
  95 #ifdef HAVE_CHARSET
  96         QUICK_CHECKBOX (SEARCH_DLG_WIDTH / 2 + 3, SEARCH_DLG_WIDTH, 8, SEARCH_DLG_HEIGHT,
  97                         N_("&All charsets"), &mcview_search_options.all_codepages),
  98 #endif
  99         QUICK_CHECKBOX (SEARCH_DLG_WIDTH / 2 + 3, SEARCH_DLG_WIDTH, 7, SEARCH_DLG_HEIGHT,
 100                         N_("&Whole words"), &mcview_search_options.whole_words),
 101         QUICK_CHECKBOX (SEARCH_DLG_WIDTH / 2 + 3, SEARCH_DLG_WIDTH, 6, SEARCH_DLG_HEIGHT,
 102                         N_("&Backwards"), &mcview_search_options.backwards),
 103         QUICK_CHECKBOX (SEARCH_DLG_WIDTH / 2 + 3, SEARCH_DLG_WIDTH, 5, SEARCH_DLG_HEIGHT,
 104                         N_("Cas&e sensitive"), &mcview_search_options.case_sens),
 105         QUICK_RADIO (3, SEARCH_DLG_WIDTH, 5, SEARCH_DLG_HEIGHT,
 106                      num_of_types, (const char **) list_of_types,
 107                      (int *) &mcview_search_options.type),
 108         QUICK_INPUT (3, SEARCH_DLG_WIDTH, 3, SEARCH_DLG_HEIGHT,
 109                      INPUT_LAST_TEXT, SEARCH_DLG_WIDTH - 6, 0, MC_HISTORY_SHARED_SEARCH, &exp),
 110         QUICK_LABEL (3, SEARCH_DLG_WIDTH, 2, SEARCH_DLG_HEIGHT, N_("Enter search string:")),
 111         QUICK_END
 112     };
 113
 114     QuickDialog Quick_input = {
 115         SEARCH_DLG_WIDTH, SEARCH_DLG_HEIGHT, -1, -1,
 116         N_("Search"), "[Input Line Keys]",
 117         quick_widgets, NULL, FALSE
 118     };
 119
 120     qd_result = quick_dialog (&Quick_input);
 121     g_strfreev (list_of_types);
 122
 123     if ((qd_result == B_CANCEL) || (exp == NULL) || (exp[0] == '\0'))
 124     {
 125         g_free (exp);
 126         return FALSE;
 127     }
 128
 129 #ifdef HAVE_CHARSET
 130     {
 131         GString *tmp = str_convert_to_input (exp);
 132
 133         if (tmp)
 134         {
 135             g_free (exp);
 136             exp = g_string_free (tmp, FALSE);
 137         }
 138     }
 139 #endif
 140
 141     g_free (view->last_search_string);
 142     view->last_search_string = exp;
 143     mcview_nroff_seq_free (&view->search_nroff_seq);
 144     mc_search_free (view->search);
 145
 146     view->search = mc_search_new (view->last_search_string, -1);
 147     view->search_nroff_seq = mcview_nroff_seq_new (view);
 148     if (view->search != NULL)
 149     {
 150         view->search->search_type = mcview_search_options.type;
 151         view->search->is_all_charsets = mcview_search_options.all_codepages;
 152         view->search->is_case_sensitive = mcview_search_options.case_sens;
 153         view->search->whole_words = mcview_search_options.whole_words;
 154         view->search->search_fn = mcview_search_cmd_callback;
 155         view->search->update_fn = mcview_search_update_cmd_callback;
 156     }
 157
 158     return (view->search != NULL);
 159 }
 160
 161 /* --------------------------------------------------------------------------------------------- */
 162
 163 gboolean
 164 mcview_dialog_goto (mcview_t * view, off_t * offset)
 165 {
 166     typedef enum
 167     {
 168         MC_VIEW_GOTO_LINENUM = 0,
 169         MC_VIEW_GOTO_PERCENT = 1,
 170         MC_VIEW_GOTO_OFFSET_DEC = 2,
 171         MC_VIEW_GOTO_OFFSET_HEX = 3
 172     } mcview_goto_type_t;
 173
 174     const char *mc_view_goto_str[] = {
 175         N_("&Line number (decimal)"),
 176         N_("Pe&rcents"),
 177         N_("&Decimal offset"),
 178         N_("He&xadecimal offset")
 179     };
 180
 181     const int goto_dlg_height = 12;
 182     int goto_dlg_width = 40;
 183
 184     static mcview_goto_type_t current_goto_type = MC_VIEW_GOTO_LINENUM;
 185
 186     size_t i;
 187
 188     size_t num_of_types = sizeof (mc_view_goto_str) / sizeof (mc_view_goto_str[0]);
 189     char *exp = NULL;
 190     int qd_result;
 191     gboolean res = FALSE;
 192
 193     QuickWidget quick_widgets[] = {
 194         QUICK_BUTTON (6, 10, goto_dlg_height - 3, goto_dlg_height, N_("&Cancel"), B_CANCEL, NULL),
 195         QUICK_BUTTON (2, 10, goto_dlg_height - 3, goto_dlg_height, N_("&OK"), B_ENTER, NULL),
 196         QUICK_RADIO (3, goto_dlg_width, 4, goto_dlg_height,
 197                      num_of_types, (const char **) mc_view_goto_str, (int *) &current_goto_type),
 198         QUICK_INPUT (3, goto_dlg_width, 2, goto_dlg_height,
 199                      INPUT_LAST_TEXT, goto_dlg_width - 6, 0, MC_HISTORY_VIEW_GOTO, &exp),
 200         QUICK_END
 201     };
 202
 203     QuickDialog Quick_input = {
 204         goto_dlg_width, goto_dlg_height, -1, -1,
 205         N_("Goto"), "[Input Line Keys]",
 206         quick_widgets, NULL, FALSE
 207     };
 208
 209 #ifdef ENABLE_NLS
 210     for (i = 0; i < num_of_types; i++)
 211         mc_view_goto_str[i] = _(mc_view_goto_str[i]);
 212
 213     quick_widgets[0].u.button.text = _(quick_widgets[0].u.button.text);
 214     quick_widgets[1].u.button.text = _(quick_widgets[1].u.button.text);
 215 #endif
 216
 217     /* calculate widget coordinates */
 218     {
 219         int b0_len, b1_len, len;
 220         const int button_gap = 2;
 221
 222         /* preliminary dialog width */
 223         goto_dlg_width = max (goto_dlg_width, str_term_width1 (Quick_input.title) + 4);
 224
 225         /* length of radiobuttons */
 226         for (i = 0; i < num_of_types; i++)
 227             goto_dlg_width = max (goto_dlg_width, str_term_width1 (mc_view_goto_str[i]) + 10);
 228
 229         /* length of buttons */
 230         b0_len = str_term_width1 (quick_widgets[0].u.button.text) + 3;
 231         b1_len = str_term_width1 (quick_widgets[1].u.button.text) + 5;  /* default button */
 232         len = b0_len + b1_len + button_gap * 2;
 233
 234         /* dialog width */
 235         Quick_input.xlen = max (goto_dlg_width, len + 6);
 236
 237         /* correct widget coordinates */
 238         for (i = sizeof (quick_widgets) / sizeof (quick_widgets[0]); i > 0; i--)
 239             quick_widgets[i - 1].x_divisions = Quick_input.xlen;
 240
 241         /* input length */
 242         quick_widgets[3].u.input.len = Quick_input.xlen - 6;
 243
 244         /* button positions */
 245         quick_widgets[1].relative_x = Quick_input.xlen / 2 - len / 2;
 246         quick_widgets[0].relative_x = quick_widgets[1].relative_x + b1_len + button_gap;
 247     }
 248
 249     /* run dialog */
 250     qd_result = quick_dialog (&Quick_input);
 251
 252     *offset = -1;
 253
 254     /* check input line value */
 255     if ((qd_result != B_CANCEL) && (exp != NULL) && (exp[0] != '\0'))
 256     {
 257         int base = (current_goto_type == MC_VIEW_GOTO_OFFSET_HEX) ? 16 : 10;
 258         off_t addr;
 259         char *error;
 260
 261         res = TRUE;
 262
 263         addr = (off_t) g_ascii_strtoll (exp, &error, base);
 264         if ((*error == '\0') && (addr >= 0))
 265         {
 266             switch (current_goto_type)
 267             {
 268             case MC_VIEW_GOTO_LINENUM:
 269                 mcview_coord_to_offset (view, offset, addr, 0);
 270                 *offset = mcview_bol (view, *offset, 0);
 271                 break;
 272             case MC_VIEW_GOTO_PERCENT:
 273                 if (addr > 100)
 274                     addr = 100;
 275                 *offset = addr * mcview_get_filesize (view) / 100;
 276                 if (!view->hex_mode)
 277                     *offset = mcview_bol (view, *offset, 0);
 278                 break;
 279             case MC_VIEW_GOTO_OFFSET_DEC:
 280             case MC_VIEW_GOTO_OFFSET_HEX:
 281                 *offset = addr;
 282                 if (!view->hex_mode)
 283                     *offset = mcview_bol (view, *offset, 0);
 284                 else
 285                 {
 286                     addr = mcview_get_filesize (view);
 287                     if (*offset > addr)
 288                         *offset = addr;
 289                 }
 290                 break;
 291             default:
 292                 *offset = 0;
 293                 break;
 294             }
 295         }
 296     }
 297
 298     g_free (exp);
 299     return res;
 300 }