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-rw-r--r--src/listbox.c71
1 files changed, 62 insertions, 9 deletions
diff --git a/src/listbox.c b/src/listbox.c
index 80b5dae..245eeef 100644
--- a/src/listbox.c
+++ b/src/listbox.c
@@ -37,12 +37,15 @@
#include "calcurse.h"
void listbox_init(struct listbox *lb, int y, int x, int h, int w,
- const char *label, listbox_fn_item_height_t fn_height,
+ const char *label, listbox_fn_item_type_t fn_type,
+ listbox_fn_item_height_t fn_height,
listbox_fn_draw_item_t fn_draw)
{
EXIT_IF(lb == NULL, "null pointer");
wins_scrollwin_init(&(lb->sw), y, x, h, w, label);
lb->item_count = lb->item_sel = 0;
+ lb->fn_type = fn_type;
+ lb->type = NULL;
lb->fn_height = fn_height;
lb->ch = NULL;
lb->fn_draw = fn_draw;
@@ -53,6 +56,7 @@ void listbox_delete(struct listbox *lb)
{
EXIT_IF(lb == NULL, "null pointer");
wins_scrollwin_delete(&(lb->sw));
+ free(lb->type);
free(lb->ch);
}
@@ -78,9 +82,15 @@ void listbox_load_items(struct listbox *lb, int item_count)
if (lb->item_sel >= item_count)
lb->item_sel = item_count - 1;
+ if (item_count == 0)
+ return;
+
+ free(lb->type);
free(lb->ch);
+ lb->type = xmalloc(item_count * sizeof(unsigned));
lb->ch = xmalloc((item_count + 1) * sizeof(unsigned));
for (i = 0, ch = 0; i < item_count; i++) {
+ lb->type[i] = lb->fn_type(i, lb->cb_data);
lb->ch[i] = ch;
ch += lb->fn_height(i, lb->cb_data);
}
@@ -113,12 +123,53 @@ int listbox_get_sel(struct listbox *lb)
return lb->item_sel;
}
-void listbox_set_sel(struct listbox *lb, unsigned pos)
+static void listbox_fix_sel(struct listbox *lb, int direction)
{
- lb->item_sel = pos;
+ int did_flip = 0;
+
+ if (lb->item_count == 0 || direction == 0)
+ return;
+
+ direction = direction > 0 ? 1 : -1;
+
+ while (lb->type[lb->item_sel] != LISTBOX_ROW_TEXT) {
+ if ((direction == -1 && lb->item_sel == 0) ||
+ (direction == 1 && lb->item_sel == lb->item_count - 1)) {
+ if (did_flip) {
+ lb->item_sel = -1;
+ return;
+ }
+ direction = -direction;
+ did_flip = 1;
+ } else {
+ lb->item_sel += direction;
+ }
+ }
+}
+
+static void listbox_fix_visible_region(struct listbox *lb)
+{
+ int i;
wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel]);
wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel + 1] - 1);
+
+ i = lb->item_sel - 1;
+ while (i >= 0 && lb->type[i] != LISTBOX_ROW_TEXT) {
+ wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[i]);
+ wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[i + 1] - 1);
+ i++;
+ }
+}
+
+void listbox_set_sel(struct listbox *lb, unsigned pos)
+{
+ lb->item_sel = pos;
+ listbox_fix_sel(lb, 1);
+ if (lb->item_sel < 0)
+ return;
+
+ listbox_fix_visible_region(lb);
}
void listbox_sel_move(struct listbox *lb, int delta)
@@ -126,13 +177,15 @@ void listbox_sel_move(struct listbox *lb, int delta)
if (lb->item_count == 0)
return;
- if (delta < 0 && lb->item_sel < -delta)
+ lb->item_sel += delta;
+ if (lb->item_sel < 0)
lb->item_sel = 0;
- else if (delta > 0 && lb->item_sel + delta >= lb->item_count)
+ else if (lb->item_sel >= lb->item_count)
lb->item_sel = lb->item_count - 1;
- else
- lb->item_sel += delta;
- wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel]);
- wins_scrollwin_ensure_visible(&(lb->sw), lb->ch[lb->item_sel + 1] - 1);
+ listbox_fix_sel(lb, delta);
+ if (lb->item_sel < 0)
+ return;
+
+ listbox_fix_visible_region(lb);
}