diff options
Diffstat (limited to 'src/main/lsp/choice-buffer.c')
| -rw-r--r-- | src/main/lsp/choice-buffer.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/src/main/lsp/choice-buffer.c b/src/main/lsp/choice-buffer.c new file mode 100644 index 0000000..44186bd --- /dev/null +++ b/src/main/lsp/choice-buffer.c @@ -0,0 +1,201 @@ +#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(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); +} |