tabline: Add %[] atom to the tabline, for random commands on click

Currently untested and undocumented.

1 files changed, 49 insertions, 31 deletions

diff --git a/src/nvim/normal.c b/src/nvim/normal.c
index cb3fc98dfa..e083085376 100644
--- a/src/nvim/normal.c
+++ b/src/nvim/normal.c
@@ -2347,8 +2347,9 @@ do_mouse (
   if (mouse_row == 0 && firstwin->w_winrow > 0) {
     if (is_drag) {
       if (in_tab_line) {
-        c1 = TabPageIdxs[mouse_col];
-        tabpage_move(c1 <= 0 ? 9999 : c1 - 1);
+        tabpage_move(tab_page_click_defs[mouse_col].type == kStlClickTabClose
+                     ? 9999
+                     : tab_page_click_defs[mouse_col].tabnr - 1);
       }
       return false;
     }
@@ -2358,41 +2359,58 @@ do_mouse (
         && cmdwin_type == 0
         && mouse_col < Columns) {
       in_tab_line = true;
-      c1 = TabPageIdxs[mouse_col];
-      if (c1 >= 0) {
-        if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK) {
-          /* double click opens new page */
-          end_visual_mode();
-          tabpage_new();
-          tabpage_move(c1 == 0 ? 9999 : c1 - 1);
-        } else {
-          /* Go to specified tab page, or next one if not clicking
-           * on a label. */
-          goto_tabpage(c1);
-
-          /* It's like clicking on the status line of a window. */
-          if (curwin != old_curwin)
+      c1 = tab_page_click_defs[mouse_col].tabnr;
+      switch (tab_page_click_defs[mouse_col].type) {
+        case kStlClickDisabled: {
+          break;
+        }
+        case kStlClickTabClose: {
+          tabpage_T *tp;
+
+          // Close the current or specified tab page.
+          if (c1 == 999) {
+            tp = curtab;
+          } else {
+            tp = find_tabpage(c1);
+          }
+          if (tp == curtab) {
+            if (first_tabpage->tp_next != NULL) {
+              tabpage_close(false);
+            }
+          } else if (tp != NULL) {
+            tabpage_close_other(tp, false);
+          }
+          break;
+        }
+        case kStlClickTabSwitch: {
+          if ((mod_mask & MOD_MASK_MULTI_CLICK) == MOD_MASK_2CLICK) {
+            // double click opens new page
             end_visual_mode();
+            tabpage_new();
+            tabpage_move(c1 == 0 ? 9999 : c1 - 1);
+          } else {
+            // Go to specified tab page, or next one if not clicking
+            // on a label.
+            goto_tabpage(c1);
+
+            // It's like clicking on the status line of a window.
+            if (curwin != old_curwin) {
+              end_visual_mode();
+            }
+          }
+          break;
+        }
+        case kStlClickCmd: {
+          do_cmdline_cmd(tab_page_click_defs[mouse_col].cmd);
+          break;
         }
-      } else if (c1 < 0) {
-        tabpage_T       *tp;
-
-        /* Close the current or specified tab page. */
-        if (c1 == -999)
-          tp = curtab;
-        else
-          tp = find_tabpage(-c1);
-        if (tp == curtab) {
-          if (first_tabpage->tp_next != NULL)
-            tabpage_close(false);
-        } else if (tp != NULL)
-          tabpage_close_other(tp, false);
       }
     }
     return true;
   } else if (is_drag && in_tab_line) {
-    c1 = TabPageIdxs[mouse_col];
-    tabpage_move(c1 <= 0 ? 9999 : c1 - 1);
+    tabpage_move(tab_page_click_defs[mouse_col].type == kStlClickTabClose
+                 ? 9999
+                 : tab_page_click_defs[mouse_col].tabnr - 1);
     in_tab_line = false;
     return false;
   }