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#include "choice-buffer.h"
#include "dged/binding.h"
#include "dged/buffer.h"
#include "dged/buffer_view.h"
#include "dged/buffers.h"
#include "dged/command.h"
#include "dged/display.h"
#include "dged/location.h"
#include "main/bindings.h"
struct choice {
struct region region;
void *data;
select_callback callback;
};
struct choice_buffer {
struct buffers *buffers;
struct buffer *buffer;
VEC(struct choice) choices;
abort_callback abort_cb;
select_callback select_cb;
update_callback update_cb;
void *userdata;
uint32_t buffer_removed_hook;
struct command enter_pressed;
struct command q_pressed;
};
static void delete_choice_buffer(struct choice_buffer *buffer,
bool delete_underlying);
static void underlying_buffer_destroyed(struct buffer *buffer,
void *choice_buffer) {
(void)buffer;
struct choice_buffer *cb = (struct choice_buffer *)choice_buffer;
// run this with false since the underlying buffer is already
// being deleted
delete_choice_buffer(cb, false);
}
static int32_t enter_pressed_fn(struct command_ctx ctx, int argc,
const char **argv) {
(void)argc;
(void)argv;
struct choice_buffer *cb = (struct choice_buffer *)ctx.userdata;
struct window *w = window_find_by_buffer(cb->buffer);
if (w == NULL) {
return 0;
}
struct buffer_view *bv = window_buffer_view(w);
VEC_FOR_EACH(&cb->choices, struct choice * choice) {
if (location_is_between(bv->dot, choice->region.begin,
choice->region.end)) {
if (choice->callback != NULL) {
choice->callback(choice->data, cb->userdata);
} else {
cb->select_cb(choice->data, cb->userdata);
}
delete_choice_buffer(cb, true);
return 0;
}
}
return 0;
}
static int32_t choice_buffer_close_fn(struct command_ctx ctx, int argc,
const char **argv) {
(void)argc;
(void)argv;
struct choice_buffer *cb = (struct choice_buffer *)ctx.userdata;
delete_choice_buffer(cb, true);
return 0;
}
struct choice_buffer *
choice_buffer_create(struct s8 title, struct buffers *buffers,
select_callback selected, abort_callback aborted,
update_callback update, void *userdata) {
struct choice_buffer *b = calloc(1, sizeof(struct choice_buffer));
VEC_INIT(&b->choices, 16);
b->select_cb = selected;
b->abort_cb = aborted;
b->update_cb = update;
b->userdata = userdata;
b->buffers = buffers;
// set up
struct buffer buf = buffer_create("*something-choices*");
buf.lazy_row_add = false;
buf.retain_properties = true;
b->buffer = buffers_add(b->buffers, buf);
// TODO: error?
b->buffer_removed_hook =
buffer_add_destroy_hook(b->buffer, underlying_buffer_destroyed, b);
b->enter_pressed = (struct command){
.name = "choice-buffer-enter",
.fn = enter_pressed_fn,
.userdata = b,
};
b->q_pressed = (struct command){
.name = "choice-buffer-close",
.fn = choice_buffer_close_fn,
.userdata = b,
};
struct binding bindings[] = {
ANONYMOUS_BINDING(ENTER, &b->enter_pressed),
ANONYMOUS_BINDING(NUMPAD_ENTER, &b->enter_pressed),
ANONYMOUS_BINDING(None, 'q', &b->q_pressed),
};
struct keymap km = keymap_create("choice_buffer", 8);
keymap_bind_keys(&km, bindings, sizeof(bindings) / sizeof(bindings[0]));
buffer_add_keymap(b->buffer, km);
struct location begin = buffer_end(b->buffer);
buffer_add(b->buffer, buffer_end(b->buffer), title.s, title.l);
buffer_newline(b->buffer, buffer_end(b->buffer));
buffer_add(b->buffer, buffer_end(b->buffer), (uint8_t *)"----------------",
16);
struct location end = buffer_end(b->buffer);
buffer_add_text_property(b->buffer, begin, end,
(struct text_property){
.type = TextProperty_Colors,
.data.colors =
(struct text_property_colors){
.set_fg = true,
.fg = Color_Cyan,
},
});
buffer_newline(b->buffer, buffer_end(b->buffer));
buffer_newline(b->buffer, buffer_end(b->buffer));
struct window *w = windows_get_active();
window_set_buffer(w, b->buffer);
struct buffer_view *bv = window_buffer_view(w);
bv->dot = buffer_end(b->buffer);
buffer_set_readonly(b->buffer, true);
return b;
}
void choice_buffer_add_choice(struct choice_buffer *buffer, struct s8 text,
void *data) {
buffer_set_readonly(buffer->buffer, false);
VEC_APPEND(&buffer->choices, struct choice * new_choice);
new_choice->data = data;
new_choice->callback = NULL;
new_choice->region.begin = buffer_end(buffer->buffer);
buffer_add(buffer->buffer, buffer_end(buffer->buffer), (uint8_t *)"- ", 2);
buffer_add(buffer->buffer, buffer_end(buffer->buffer), text.s, text.l);
new_choice->region.end = buffer_end(buffer->buffer);
buffer_newline(buffer->buffer, buffer_end(buffer->buffer));
buffer_set_readonly(buffer->buffer, false);
}
void choice_buffer_add_choice_with_callback(struct choice_buffer *buffer,
struct s8 text, void *data,
select_callback callback) {
buffer_set_readonly(buffer->buffer, false);
VEC_APPEND(&buffer->choices, struct choice * new_choice);
new_choice->data = data;
new_choice->callback = callback;
new_choice->region.begin = buffer_end(buffer->buffer);
buffer_add(buffer->buffer, buffer_end(buffer->buffer), (uint8_t *)"- ", 2);
buffer_add(buffer->buffer, buffer_end(buffer->buffer), text.s, text.l);
new_choice->region.end = buffer_end(buffer->buffer);
buffer_newline(buffer->buffer, buffer_end(buffer->buffer));
buffer_set_readonly(buffer->buffer, false);
}
static void delete_choice_buffer(struct choice_buffer *buffer,
bool delete_underlying) {
buffer->abort_cb(buffer->userdata);
VEC_DESTROY(&buffer->choices);
if (delete_underlying) {
buffer_remove_destroy_hook(buffer->buffer, buffer->buffer_removed_hook,
NULL);
buffers_remove(buffer->buffers, buffer->buffer->name);
}
free(buffer);
}
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