Merge pull request #10475 from erw7/fix-ext-popupmenu

Fix some keys not working in ext_popupmenu

src/nvim/api/ui.c

@@ -109,6 +109,7 @@ void nvim_ui_attach(uint64_t channel_id, Integer width, Integer height,
   UI *ui = xcalloc(1, sizeof(UI));
   ui->width = (int)width;
   ui->height = (int)height;
+  ui->pum_height = 0;
   ui->rgb = true;
   ui->override = false;
   ui->grid_resize = remote_ui_grid_resize;
@@ -313,6 +314,38 @@ void nvim_ui_try_resize_grid(uint64_t channel_id, Integer grid, Integer width,
   ui_grid_resize((handle_T)grid, (int)width, (int)height, err);
 }
 
+/// Tell Nvim the number of element displayed in popumenu. The amount of
+/// movement by <PageUp> or <PageDown> is determined by the value set by this.
+///
+/// If the ext_popupmenu option is false or the height is 0 or less, fails
+/// with error.
+///
+/// @param channel_id
+/// @param height  The popupmenu height.
+/// @param[out] err Error details, if any
+void nvim_ui_pum_set_height(uint64_t channel_id, Integer height, Error *err)
+  FUNC_API_SINCE(6) FUNC_API_REMOTE_ONLY
+{
+  if (!pmap_has(uint64_t)(connected_uis, channel_id)) {
+    api_set_error(err, kErrorTypeException,
+                  "UI not attached to channel: %" PRId64, channel_id);
+    return;
+  }
+
+  if (height <= 0) {
+    api_set_error(err, kErrorTypeValidation, "Expected pum height > 0");
+    return;
+  }
+
+  UI *ui = pmap_get(uint64_t)(connected_uis, channel_id);
+  if (!ui->ui_ext[kUIPopupmenu]) {
+    api_set_error(err, kErrorTypeValidation,
+                  "It must support the ext_popupmenu option");
+    return;
+  }
+  ui->pum_height = (int)height;
+}
+
 /// Pushes data into UI.UIData, to be consumed later by remote_ui_flush().
 static void push_call(UI *ui, const char *name, Array args)
 {

src/nvim/popupmnu.c

@@ -135,8 +135,8 @@ void pum_display(pumitem_T *array, int size, int selected, bool array_changed,
         ui_call_popupmenu_show(arr, selected, row, col, pum_anchor_grid);
       } else {
         ui_call_popupmenu_select(selected);
+        return;
       }
-      return;
     }
 
     def_width = PUM_DEF_WIDTH;
@@ -237,6 +237,9 @@ void pum_display(pumitem_T *array, int size, int selected, bool array_changed,
         pum_height = row - above_row;
       }
     }
+    if (pum_external) {
+      return;
+    }
 
     // Compute the width of the widest match and the widest extra.
     for (i = 0; i < size; i++) {
@@ -852,6 +855,12 @@ void pum_recompose(void)
 /// Only valid when pum_visible() returns TRUE!
 int pum_get_height(void)
 {
+  if (pum_external) {
+    int ui_pum_height = ui_pum_get_height();
+    if (ui_pum_height) {
+      return ui_pum_height;
+    }
+  }
   return pum_height;
 }
 

src/nvim/ui.c

@@ -221,6 +221,19 @@ void ui_refresh(void)
   ui_cursor_shape();
 }
 
+int ui_pum_get_height(void)
+{
+  int pum_height = 0;
+  for (size_t i = 1; i < ui_count; i++) {
+    int ui_pum_height = uis[i]->pum_height;
+    if (ui_pum_height) {
+      pum_height =
+        pum_height != 0 ? MIN(pum_height, ui_pum_height) : ui_pum_height;
+    }
+  }
+  return pum_height;
+}
+
 static void ui_refresh_event(void **argv)
 {
   ui_refresh();

src/nvim/ui.h

@@ -53,6 +53,7 @@ struct ui_t {
   bool ui_ext[kUIExtCount];  ///< Externalized UI capabilities.
   int width;
   int height;
+  int pum_height;
   void *data;
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS