mdw@git.distorted.org.uk Git - dpkg/blob - dselect/methlist.cc

   1 /*
   2  * dselect - Debian package maintenance user interface
   3  * methlist.cc - list of access methods and options
   4  *
   5  * Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
   6  * Copyright © 2001 Wichert Akkerman <wakkerma@debian.org>
   7  *
   8  * This is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  20  */
  21
  22 #include <config.h>
  23 #include <compat.h>
  24
  25 #include <assert.h>
  26 #include <errno.h>
  27 #include <string.h>
  28 #include <stdio.h>
  29
  30 #include <dpkg/i18n.h>
  31 #include <dpkg/dpkg.h>
  32 #include <dpkg/dpkg-db.h>
  33 #include <dpkg/string.h>
  34
  35 #include "dselect.h"
  36 #include "bindings.h"
  37 #include "method.h"
  38 #include "helpmsgs.h"
  39
  40 static keybindings methodlistbindings(methodlist_kinterps,methodlist_korgbindings);
  41
  42 const char *methodlist::itemname(int index) {
  43   return table[index]->name;
  44 }
  45
  46 void methodlist::kd_abort() { }
  47
  48 void methodlist::kd_quit() {
  49   debug(dbg_general, "methodlist[%p]::kd_quit() setting coption=%p",
  50         this, table[cursorline]);
  51   coption= table[cursorline];
  52 }
  53
  54 void methodlist::setheights() {
  55   debug(dbg_general, "methodlist[%p]::setheights()", this);
  56   baselist::setheights();
  57   list_height++;
  58 }
  59
  60 void methodlist::setwidths() {
  61   debug(dbg_general, "methodlist[%p]::setwidths()", this);
  62
  63   col_cur_x = 0;
  64
  65   add_column(col_status, "  ", 1);
  66   add_column(col_name, _("Abbrev."), 14);
  67   end_column(col_desc, _("Description"));
  68 }
  69
  70 void methodlist::redrawtitle() {
  71   if (title_height) {
  72     mywerase(titlewin);
  73     mvwaddnstr(titlewin,0,0,_("dselect - list of access methods"),xmax);
  74     wnoutrefresh(titlewin);
  75   }
  76 }
  77
  78 void methodlist::redrawthisstate() {
  79   if (!thisstate_height) return;
  80   mywerase(thisstatepad);
  81   wprintw(thisstatepad,
  82           _("Access method '%s'."),
  83           table[cursorline]->name);
  84   pnoutrefresh(thisstatepad, 0,0, thisstate_row,0,
  85                thisstate_row, min(total_width - 1, xmax - 1));
  86 }
  87
  88 void methodlist::redraw1itemsel(int index, int selected) {
  89   int i;
  90   const char *p;
  91
  92   wattrset(listpad, part_attr[selected ? listsel : list]);
  93   mvwaddch(listpad,index,0,
  94            table[index] == coption ? '*' : ' ');
  95   wattrset(listpad, part_attr[selected ? listsel : list]);
  96   draw_column_sep(col_name, index);
  97   draw_column_item(col_name, index, table[index]->name);
  98
  99   draw_column_sep(col_desc, index);
 100   i = col_desc.width;
 101   p= table[index]->summary ? table[index]->summary : "";
 102   while (i>0 && *p && *p != '\n') {
 103     waddch(listpad,*p);
 104     i--; p++;
 105   }
 106   while (i>0) {
 107     waddch(listpad,' ');
 108     i--;
 109   }
 110 }
 111
 112 void methodlist::redrawcolheads() {
 113   if (colheads_height) {
 114     wattrset(colheadspad, part_attr[colheads]);
 115     mywerase(colheadspad);
 116     draw_column_head(col_status);
 117     draw_column_head(col_name);
 118     draw_column_head(col_desc);
 119   }
 120   refreshcolheads();
 121 }
 122
 123 methodlist::methodlist() : baselist(&methodlistbindings) {
 124   int newcursor= -1;
 125
 126   debug(dbg_general, "methodlist[%p]::methodlist()", this);
 127
 128   table= new struct dselect_option*[noptions];
 129
 130   struct dselect_option *opt, **ip;
 131   for (opt=options, ip=table, nitems=0; opt; opt=opt->next, nitems++) {
 132     if (opt == coption) { assert(newcursor==-1); newcursor= nitems; }
 133     *ip++= opt;
 134   }
 135   assert(nitems==noptions);
 136
 137   if (newcursor==-1) newcursor= 0;
 138   setcursor(newcursor);
 139
 140   debug(dbg_general, "methodlist[%p]::methodlist done; noptions=%d",
 141         this, noptions);
 142 }
 143
 144 methodlist::~methodlist() {
 145   debug(dbg_general, "methodlist[%p]::~methodlist()", this);
 146   delete[] table;
 147 }
 148
 149 quitaction methodlist::display() {
 150   int response;
 151   const keybindings::interpretation *interp;
 152
 153   debug(dbg_general, "methodlist[%p]::display()", this);
 154
 155   setupsigwinch();
 156   startdisplay();
 157
 158   debug(dbg_general, "methodlist[%p]::display() entering loop", this);
 159   for (;;) {
 160     if (whatinfo_height) wcursyncup(whatinfowin);
 161     if (doupdate() == ERR) ohshite(_("doupdate failed"));
 162     signallist= this;
 163     sigwinch_mask(SIG_UNBLOCK);
 164     do
 165     response= getch();
 166     while (response == ERR && errno == EINTR);
 167     sigwinch_mask(SIG_BLOCK);
 168     if (response == ERR) ohshite(_("getch failed"));
 169     interp= (*bindings)(response);
 170     debug(dbg_general, "methodlist[%p]::display() response=%d interp=%s",
 171           this, response, interp ? interp->action : "[none]");
 172     if (!interp) { beep(); continue; }
 173     (this->*(interp->mfn))();
 174     if (interp->qa != qa_noquit) break;
 175   }
 176   pop_cleanup(ehflag_normaltidy); // unset the SIGWINCH handler
 177   enddisplay();
 178
 179   debug(dbg_general, "methodlist[%p]::display() done", this);
 180
 181   return interp->qa;
 182 }
 183
 184 void methodlist::itd_description() {
 185   whatinfovb(_("Explanation"));
 186
 187   wattrset(infopad, part_attr[info_head]);
 188   waddstr(infopad, table[cursorline]->name);
 189   waddstr(infopad," - ");
 190   waddstr(infopad, table[cursorline]->summary);
 191   wattrset(infopad, part_attr[info_body]);
 192
 193   const char *m= table[cursorline]->description;
 194   if (str_is_unset(m))
 195     m = _("No explanation available.");
 196   waddstr(infopad,"\n\n");
 197   wordwrapinfo(0,m);
 198 }
 199
 200 void methodlist::redrawinfo() {
 201   if (!info_height) return;
 202   whatinfovb.reset();
 203   werase(infopad); wmove(infopad,0,0);
 204
 205   debug(dbg_general, "methodlist[%p]::redrawinfo()", this);
 206
 207   itd_description();
 208
 209   int y,x;
 210   getyx(infopad, y,x);
 211   if (x) y++;
 212   infolines= y;
 213
 214   refreshinfo();
 215 }
 216
 217 const struct helpmenuentry *methodlist::helpmenulist() {
 218   static const struct helpmenuentry list[]= {
 219     { 'i', &hlp_methintro            },
 220     { 'k', &hlp_methkeys             },
 221     {  0                             }
 222   };
 223   return list;
 224 };