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/*
* Buffer editor mode for QEmacs.
* Copyright (c) 2001, 2002 Fabrice Bellard.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "qe.h"
typedef struct BufedState {
StringArray items;
} BufedState;
ModeDef bufed_mode;
static void build_bufed_list(EditState *s)
{
QEmacsState *qs = s->qe_state;
EditBuffer *b;
BufedState *hs;
int i;
hs = s->mode_data;
free_strings(&hs->items);
for(b = qs->first_buffer; b != NULL; b = b->next) {
if (!(b->flags & BF_SYSTEM))
add_string(&hs->items, b->name);
}
/* build buffer */
b = s->b;
eb_delete(b, 0, b->total_size);
for(i=0;i<hs->items.nb_items;i++) {
eb_printf(b, " %s", hs->items.items[i]->str);
if (i != hs->items.nb_items - 1)
eb_printf(b, "\n");
}
}
static void bufed_select(EditState *s)
{
BufedState *bs = s->mode_data;
StringItem *item;
EditBuffer *b;
EditState *e;
int index;
index = list_get_pos(s);
if (index < 0 || index >= bs->items.nb_items)
return;
item = bs->items.items[index];
b = eb_find(item->str);
if (!b)
return;
e = find_window_right(s);
if (!e)
return;
/* delete dired window */
do_delete_window(s, 1);
switch_to_buffer(e, b);
}
/* iterate 'func_item' to selected items. If no selected items, then
use current item */
void string_selection_iterate(StringArray *cs,
int current_index,
void (*func_item)(void *, StringItem *),
void *opaque)
{
StringItem *item;
int count, i;
count = 0;
for(i=0;i<cs->nb_items;i++) {
item = cs->items[i];
if (item->selected) {
func_item(opaque, item);
count++;
}
}
/* if no item selected, then act on selected item */
if (count == 0 &&
current_index >=0 && current_index < cs->nb_items) {
item = cs->items[current_index];
func_item(opaque, item);
}
}
static void bufed_kill_item(void *opaque, StringItem *item)
{
EditState *s = opaque;
do_kill_buffer(s, item->str);
}
static void bufed_kill_buffer(EditState *s)
{
BufedState *hs = s->mode_data;
string_selection_iterate(&hs->items, list_get_pos(s),
bufed_kill_item, s);
build_bufed_list(s);
}
/* show a list of buffers */
static void do_list_buffers(EditState *s)
{
QEmacsState *qs = s->qe_state;
BufedState *bs;
EditBuffer *b;
EditState *e;
int width, i;
/* XXX: must close this buffer when destroying window: add a
special buffer flag to tell this */
b = eb_new("*bufed*", BF_READONLY | BF_SYSTEM);
width = qs->width / 4;
e = insert_window_left(b, width, WF_MODELINE);
do_set_mode(e, &bufed_mode, NULL);
bs = e->mode_data;
/* if active buffer is found, go directly on it */
for(i=0;i<bs->items.nb_items;i++) {
if (!strcmp(bs->items.items[i]->str, s->b->name)) {
e->offset = eb_goto_pos(e->b, i, 0);
break;
}
}
/* modify active window */
qs->active_window = e;
}
static int bufed_mode_init(EditState *s, ModeSavedData *saved_data)
{
list_mode.mode_init(s, saved_data);
build_bufed_list(s);
return 0;
}
static void bufed_mode_close(EditState *s)
{
BufedState *hs;
hs = s->mode_data;
free_strings(&hs->items);
list_mode.mode_close(s);
}
/* specific bufed commands */
static CmdDef bufed_commands[] = {
CMD0( KEY_RET, KEY_RIGHT, "bufed-select", bufed_select)
CMD1( KEY_CTRL('g'), KEY_NONE, "delete-window", do_delete_window, 0)
CMD0( ' ', KEY_CTRL('t'), "bufed-toggle_selection", list_toggle_selection)
CMD0( KEY_F8, KEY_NONE, "bufed-kill-buffer", bufed_kill_buffer)
CMD_DEF_END,
};
static CmdDef bufed_global_commands[] = {
CMD0( KEY_CTRLX(KEY_CTRL('b')), KEY_NONE, "list-buffers", do_list_buffers)
CMD_DEF_END,
};
static int bufed_init(void)
{
/* inherit from list mode */
memcpy(&bufed_mode, &list_mode, sizeof(ModeDef));
bufed_mode.name = "bufed";
bufed_mode.instance_size = sizeof(BufedState);
bufed_mode.mode_init = bufed_mode_init;
bufed_mode.mode_close = bufed_mode_close;
/* first register mode */
qe_register_mode(&bufed_mode);
qe_register_cmd_table(bufed_commands, "bufed");
qe_register_cmd_table(bufed_global_commands, NULL);
return 0;
}
qe_module_init(bufed_init);
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