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+/*
+ * dselect - Debian package maintenance user interface
+ * basecmds.cc - base list keyboard commands display
+ *
+ * Copyright © 1994,1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ * Copyright © 2000,2001 Wichert Akkerman <wakkerma@debian.org>
+ *
+ * This 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This 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/>.
+ */
+
+#include <config.h>
+#include <compat.h>
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <dpkg/i18n.h>
+#include <dpkg/dpkg.h>
+#include <dpkg/dpkg-db.h>
+
+#include "dselect.h"
+#include "helpmsgs.h"
+
+void baselist::kd_scrollon() {
+ topofscreen += list_height;
+ if (topofscreen > nitems - list_height) topofscreen= nitems - list_height;
+ if (topofscreen < 0) topofscreen= 0;
+ if (cursorline < topofscreen)
+ setcursor(topofscreen);
+ refreshlist();
+}
+
+void baselist::kd_scrollon1() {
+ if (topofscreen >= nitems - list_height) return;
+ topofscreen++;
+ if (cursorline < topofscreen)
+ setcursor(topofscreen);
+ refreshlist();
+}
+
+void baselist::kd_scrollback() {
+ topofscreen -= list_height;
+ if (topofscreen < 0) topofscreen= 0;
+ if (cursorline >= topofscreen + list_height)
+ setcursor(topofscreen + list_height - 1);
+ refreshlist();
+}
+
+void baselist::kd_scrollback1() {
+ if (topofscreen <= 0) return;
+ topofscreen--;
+ if (cursorline >= topofscreen + list_height)
+ setcursor(topofscreen + list_height - 1);
+ refreshlist();
+}
+
+void baselist::kd_top() {
+ topofscreen= 0; setcursor(0);
+}
+
+void baselist::kd_bottom() {
+ topofscreen= nitems - list_height;
+ if (topofscreen < 0) topofscreen= 0;
+ setcursor(min(topofscreen + list_height - 1, nitems - 1));
+}
+
+void baselist::kd_redraw() {
+ clearok(curscr,TRUE);
+ redrawall();
+ debug(dbg_general, "baselist[%p]::kd_redraw() done", this);
+}
+
+void baselist::kd_searchagain() {
+ if (!searchstring[0]) { beep(); return; }
+ dosearch();
+}
+
+bool
+baselist::checksearch(char *str)
+{
+ return true;
+}
+
+bool
+baselist::matchsearch(int index)
+{
+ int lendiff, searchlen, i;
+ const char *name;
+
+ name = itemname(index);
+ if (!name)
+ return false; /* Skip things without a name (separators). */
+
+ searchlen=strlen(searchstring);
+ lendiff = strlen(name) - searchlen;
+ for (i=0; i<=lendiff; i++)
+ if (strncasecmp(name + i, searchstring, searchlen) == 0)
+ return true;
+
+ return false;
+}
+
+void baselist::kd_search() {
+ char newsearchstring[128];
+ strcpy(newsearchstring,searchstring);
+ werase(querywin);
+ mvwaddstr(querywin,0,0, _("Search for ? "));
+ echo();
+ if (wgetnstr(querywin,newsearchstring,sizeof(newsearchstring)-1) == ERR)
+ searchstring[0]= 0;
+ resize_window();
+ noecho();
+ if (whatinfo_height) { touchwin(whatinfowin); refreshinfo(); }
+ else if (info_height) { touchwin(infopad); refreshinfo(); }
+ else if (thisstate_height) redrawthisstate();
+ else { touchwin(listpad); refreshlist(); }
+ if (newsearchstring[0]) {
+ if (!checksearch(newsearchstring)) {
+ beep();
+ return;
+ }
+ strcpy(searchstring,newsearchstring);
+ dosearch();
+ } else
+ kd_searchagain();
+}
+
+void
+baselist::displayerror(const char *str)
+{
+ const char *pr = _("Error: ");
+ int prlen=strlen(pr);
+
+ beep();
+ werase(querywin);
+ mvwaddstr(querywin,0,0,pr);
+ mvwaddstr(querywin,0,prlen,str);
+ wgetch(querywin);
+ if (whatinfo_height) { touchwin(whatinfowin); refreshinfo(); }
+ else if (info_height) { touchwin(infopad); refreshinfo(); }
+ else if (thisstate_height) redrawthisstate();
+}
+
+
+void baselist::displayhelp(const struct helpmenuentry *helpmenu, int key) {
+ int maxx, maxy, i, nextkey;
+
+ wbkgdset(stdscr, ' ' | part_attr[helpscreen]);
+ clearok(stdscr,TRUE);
+ for (;;) {
+ getmaxyx(stdscr, maxy, maxx);
+ werase(stdscr);
+ const struct helpmenuentry *hme = helpmenu;
+ while (hme->key && hme->key != key)
+ hme++;
+ if (hme->key) {
+ int x, y DPKG_ATTR_UNUSED;
+
+ attrset(part_attr[helpscreen]);
+ mvaddstr(1,0, gettext(hme->msg->text));
+ attrset(part_attr[title]);
+ mvaddstr(0,0, _("Help: "));
+ addstr(gettext(hme->msg->title));
+ getyx(stdscr,y,x);
+ while (++x<maxx) addch(' ');
+ attrset(part_attr[thisstate]);
+ mvaddstr(maxy-1,0,
+_("Press ? for help menu, . for next topic, <space> to exit help."));
+ getyx(stdscr,y,x);
+ while (++x<maxx) addch(' ');
+ move(maxy,maxx);
+ attrset(A_NORMAL);
+ nextkey= hme[1].key;
+ } else {
+ mvaddstr(1,1, _("Help information is available under the following topics:"));
+ for (i=0, hme=helpmenu; hme->key; hme++,i++) {
+ attrset(A_BOLD);
+ mvaddch(i+3,3, hme->key);
+ attrset(A_NORMAL);
+ mvaddstr(i+3,6, gettext(hme->msg->title));
+ }
+ mvaddstr(i+4,1,
+ _("Press a key from the list above, <space> or 'q' to exit help,\n"
+ " or '.' (full stop) to read each help page in turn. "));
+ nextkey= helpmenu[0].key;
+ }
+ refresh();
+ do {
+ int curkey = key;
+
+ key = getch();
+ if (key == KEY_RESIZE) {
+ resize_window();
+ key = curkey;
+ }
+ } while (key == ERR && errno == EINTR);
+ if (key == EOF) ohshite(_("error reading keyboard in help"));
+ if (key == ' ' || key == 'q') {
+ break;
+ } else if (key == '?' || key == 'h') {
+ key= 0;
+ } else if (key == '.') {
+ key= nextkey;
+ }
+ }
+ werase(stdscr);
+ clearok(stdscr,TRUE);
+ wnoutrefresh(stdscr);
+
+ redrawtitle();
+ refreshcolheads();
+ refreshlist();
+ redrawthisstate();
+ refreshinfo();
+ wnoutrefresh(whatinfowin);
+}
+
+void baselist::kd_help() {
+ displayhelp(helpmenulist(),0);
+}
+
+void baselist::setcursor(int index) {
+ if (listpad && cursorline != -1) {
+ redrawitemsrange(cursorline,cursorline+1);
+ redraw1itemsel(cursorline,0);
+ }
+ if (cursorline != index) infotopofscreen= 0;
+ cursorline= index;
+ if (listpad) {
+ redrawitemsrange(cursorline,cursorline+1);
+ redraw1itemsel(cursorline,1);
+ refreshlist();
+ redrawthisstate();
+ }
+ redrawinfo();
+}
+
+void baselist::kd_down() {
+ int ncursor= cursorline;
+ // scroll by one line unless the bottom is already visible
+ // or we're in the top half of the screen ...
+ if (topofscreen < nitems - list_height &&
+ ncursor >= topofscreen + list_height - 3) topofscreen++;
+ // move cursor if there are any more ...
+ if (cursorline+1 < nitems) ncursor++;
+ setcursor(ncursor);
+}
+
+void baselist::kd_up() {
+ int ncursor= cursorline;
+ // scroll by one line if there are any lines not shown yet
+ // and we're not in the bottom half the screen ...
+ if (topofscreen > 0 &&
+ ncursor <= topofscreen + 2) topofscreen--;
+ // move cursor if there are any to move it to ...
+ if (cursorline > 0) ncursor--;
+ setcursor(ncursor);
+}
+
+void baselist::kd_iscrollon() {
+ infotopofscreen += info_height;
+ if (infotopofscreen > infolines - info_height)
+ infotopofscreen= infolines - info_height;
+ if (infotopofscreen < 0) infotopofscreen= 0;
+ refreshinfo();
+}
+
+void baselist::kd_iscrollback() {
+ infotopofscreen -= info_height;
+ if (infotopofscreen < 0) infotopofscreen= 0;
+ refreshinfo();
+}
+
+void baselist::kd_iscrollon1() {
+ if (infotopofscreen >= infolines - info_height) return;
+ infotopofscreen++; refreshinfo();
+}
+
+void baselist::kd_iscrollback1() {
+ if (infotopofscreen <= 0) return;
+ infotopofscreen--; refreshinfo();
+}
+
+void baselist::kd_panon() {
+ leftofscreen += xmax/3;
+ if (leftofscreen > total_width - xmax) leftofscreen= total_width - xmax;
+ if (leftofscreen < 0) leftofscreen= 0;
+ refreshcolheads(); refreshlist(); redrawthisstate(); refreshinfo();
+}
+
+void baselist::kd_panback() {
+ leftofscreen -= xmax/3;
+ if (leftofscreen < 0) leftofscreen= 0;
+ refreshcolheads(); refreshlist(); redrawthisstate(); refreshinfo();
+}
+
+void baselist::kd_panon1() {
+ leftofscreen++;
+ if (leftofscreen > total_width - xmax) leftofscreen= total_width - xmax;
+ if (leftofscreen < 0) leftofscreen= 0;
+ refreshcolheads(); refreshlist(); redrawthisstate(); refreshinfo();
+}
+
+void baselist::kd_panback1() {
+ leftofscreen--;
+ if (leftofscreen < 0) leftofscreen= 0;
+ refreshcolheads(); refreshlist(); redrawthisstate(); refreshinfo();
+}