/* * $Id$ * * (c) 2004 by Kalle Wallin * * This program 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 program 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include #include #include #include "config.h" #include "options.h" #include "support.h" #include "command.h" #include "colors.h" #include "list_window.h" extern void screen_bell(void); list_window_t * list_window_init(WINDOW *w, int width, int height) { list_window_t *lw; lw = g_malloc0(sizeof(list_window_t)); lw->w = w; lw->cols = width; lw->rows = height; lw->clear = 1; return lw; } list_window_t * list_window_free(list_window_t *lw) { if( lw ) { memset(lw, 0, sizeof(list_window_t)); g_free(lw); } return NULL; } void list_window_reset(list_window_t *lw) { lw->selected = 0; lw->xoffset = 0; lw->start = 0; lw->clear = 1; } void list_window_check_selected(list_window_t *lw, int length) { while( lw->start && lw->start+lw->rows>length) lw->start--; if( lw->selected<0 ) lw->selected=0; while( lw->selectedstart ) lw->selected++; while( lw->selected>0 && length>0 && lw->selected>=length ) lw->selected--; } void list_window_set_selected(list_window_t *lw, int n) { lw->selected=n; } void list_window_next(list_window_t *lw, int length) { if( lw->selected < length-1 ) lw->selected++; else if ( options.list_wrap ) lw->selected = 0; } void list_window_previous(list_window_t *lw, int length) { if( lw->selected > 0 ) lw->selected--; else if( options.list_wrap ) lw->selected = length-1; } void list_window_right(list_window_t *lw, int length) { lw->xoffset++; } void list_window_left(list_window_t *lw) { if( lw->xoffset > 0 ) lw->xoffset--; } void list_window_first(list_window_t *lw) { lw->xoffset = 0; lw->selected = 0; } void list_window_last(list_window_t *lw, int length) { lw->xoffset = 0; lw->selected = length-1; } void list_window_next_page(list_window_t *lw, int length) { int step = lw->rows-1; if( step<= 0 ) return; if( lw->selected+step < length-1 ) lw->selected+=step; else return list_window_last(lw,length); } void list_window_previous_page(list_window_t *lw) { int step = lw->rows-1; if( step<= 0 ) return; if( lw->selected-step > 0 ) lw->selected-=step; else list_window_first(lw); } void list_window_paint(list_window_t *lw, list_window_callback_fn_t callback, void *callback_data) { int i; int fill = options.wide_cursor; int show_cursor = !(lw->flags & LW_HIDE_CURSOR); if( show_cursor ) { while( lw->selected < lw->start ) { lw->start--; lw->clear=1; } while( lw->selected >= lw->start+lw->rows ) { lw->start++; lw->clear=1; } } for(i=0; irows; i++) { int highlight = 0; char *label; label = (callback) (lw->start+i, &highlight, callback_data); wmove(lw->w, i, 0); if( lw->clear && (!fill || !label) ) wclrtoeol(lw->w); if( label ) { int selected = lw->start+i == lw->selected; size_t len = my_strlen(label); if( highlight ) colors_use(lw->w, COLOR_LIST_BOLD); else colors_use(lw->w, COLOR_LIST); if( show_cursor && selected ) wattron(lw->w, A_REVERSE); //waddnstr(lw->w, label, lw->cols); waddstr(lw->w, label); if( fill && lencols ) whline(lw->w, ' ', lw->cols-len); if( selected ) wattroff(lw->w, A_REVERSE); } } lw->clear=0; } int list_window_find(list_window_t *lw, list_window_callback_fn_t callback, void *callback_data, char *str, int wrap) { int h; int i = lw->selected+1; char *label; while( wrap || i==lw->selected+1 ) { while( (label=(callback) (i,&h,callback_data)) ) { if( str && label && strcasestr(label, str) ) { lw->selected = i; return 0; } if( wrap && i==lw->selected ) return 1; i++; } if( wrap ) { if ( i==0 ) /* empty list */ return 1; i=0; /* first item */ screen_bell(); } } return 1; } int list_window_rfind(list_window_t *lw, list_window_callback_fn_t callback, void *callback_data, char *str, int wrap, int rows) { int h; int i = lw->selected-1; char *label; if ( rows == 0 ) return 1; while( wrap || i==lw->selected-1 ) { while( i>=0 && (label=(callback) (i,&h,callback_data)) ) { if( str && label && strcasestr(label, str) ) { lw->selected = i; return 0; } if( wrap && i==lw->selected ) return 1; i--; } if( wrap ) { i=rows-1; /* last item */ screen_bell(); } } return 1; } /* perform basic list window commands (movement) */ int list_window_cmd(list_window_t *lw, int rows, command_t cmd) { switch(cmd) { case CMD_LIST_PREVIOUS: list_window_previous(lw, rows); lw->repaint=1; break; case CMD_LIST_NEXT: list_window_next(lw, rows); lw->repaint=1; break; case CMD_LIST_FIRST: list_window_first(lw); lw->repaint = 1; break; case CMD_LIST_LAST: list_window_last(lw, rows); lw->repaint = 1; break; case CMD_LIST_NEXT_PAGE: list_window_next_page(lw, rows); lw->repaint = 1; break; case CMD_LIST_PREVIOUS_PAGE: list_window_previous_page(lw); lw->repaint = 1; break; default: return 0; } return 1; } list_window_state_t * list_window_init_state(void) { return g_malloc0(sizeof(list_window_state_t)); } list_window_state_t * list_window_free_state(list_window_state_t *state) { if( state ) { if( state->list ) { GList *list = state->list; while( list ) { g_free(list->data); list->data = NULL; list = list->next; } g_list_free(state->list); state->list = NULL; } g_free(state); } return NULL; } void list_window_push_state(list_window_state_t *state, list_window_t *lw) { if( state ) { list_window_t *tmp = g_malloc(sizeof(list_window_t)); memcpy(tmp, lw, sizeof(list_window_t)); state->list = g_list_prepend(state->list, (gpointer) tmp); list_window_reset(lw); } } void list_window_pop_state(list_window_state_t *state, list_window_t *lw) { if( state && state->list ) { list_window_t *tmp = state->list->data; memcpy(lw, tmp, sizeof(list_window_t)); g_free(tmp); state->list->data = NULL; state->list = g_list_delete_link(state->list, state->list); } }