refactor: move some functions to winfloat.c (#26020)

10 files changed, 297 insertions, 262 deletions

diff --git a/src/nvim/api/win_config.c b/src/nvim/api/win_config.c
index 83c8ba832c..0e6daf6b95 100644
--- a/src/nvim/api/win_config.c
+++ b/src/nvim/api/win_config.c
@@ -25,6 +25,7 @@
 #include "nvim/syntax.h"
 #include "nvim/ui.h"
 #include "nvim/window.h"
+#include "nvim/winfloat.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "api/win_config.c.generated.h"
diff --git a/src/nvim/autocmd.c b/src/nvim/autocmd.c
index 80573696d4..65e902ed4b 100644
--- a/src/nvim/autocmd.c
+++ b/src/nvim/autocmd.c
@@ -48,6 +48,7 @@
 #include "nvim/ui_compositor.h"
 #include "nvim/vim.h"
 #include "nvim/window.h"
+#include "nvim/winfloat.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "auevents_name_map.generated.h"
diff --git a/src/nvim/buffer.c b/src/nvim/buffer.c
index 230cd4cef7..262163f248 100644
--- a/src/nvim/buffer.c
+++ b/src/nvim/buffer.c
@@ -101,6 +101,7 @@
 #include "nvim/version.h"
 #include "nvim/vim.h"
 #include "nvim/window.h"
+#include "nvim/winfloat.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "buffer.c.generated.h"
diff --git a/src/nvim/eval/window.c b/src/nvim/eval/window.c
index c0607a4a34..bcc29dfeed 100644
--- a/src/nvim/eval/window.c
+++ b/src/nvim/eval/window.c
@@ -26,6 +26,7 @@
 #include "nvim/types.h"
 #include "nvim/vim.h"
 #include "nvim/window.h"
+#include "nvim/winfloat.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "eval/window.c.generated.h"
@@ -635,7 +636,7 @@ void f_win_splitmove(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
 
   if (wp == NULL || targetwin == NULL || wp == targetwin
       || !win_valid(wp) || !win_valid(targetwin)
-      || win_valid_floating(wp) || win_valid_floating(targetwin)) {
+      || win_float_valid(wp) || win_float_valid(targetwin)) {
     emsg(_(e_invalwindow));
     rettv->vval.v_number = -1;
     return;
diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index 13043930b2..fee712bbed 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -83,6 +83,7 @@
 #include "nvim/usercmd.h"
 #include "nvim/vim.h"
 #include "nvim/window.h"
+#include "nvim/winfloat.h"
 
 static const char e_ambiguous_use_of_user_defined_command[]
   = N_("E464: Ambiguous use of user-defined command");
diff --git a/src/nvim/move.c b/src/nvim/move.c
index 7cc368a36b..bf5aba2f7b 100644
--- a/src/nvim/move.c
+++ b/src/nvim/move.c
@@ -45,6 +45,7 @@
 #include "nvim/types.h"
 #include "nvim/vim.h"
 #include "nvim/window.h"
+#include "nvim/winfloat.h"
 
 typedef struct {
   linenr_T lnum;                // line number
diff --git a/src/nvim/ui.c b/src/nvim/ui.c
index 3e5bfba315..a2791be583 100644
--- a/src/nvim/ui.c
+++ b/src/nvim/ui.c
@@ -35,6 +35,7 @@
 #include "nvim/ui_compositor.h"
 #include "nvim/vim.h"
 #include "nvim/window.h"
+#include "nvim/winfloat.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "ui.c.generated.h"
diff --git a/src/nvim/window.c b/src/nvim/window.c
index a49dcd95bc..7742313e84 100644
--- a/src/nvim/window.c
+++ b/src/nvim/window.c
@@ -75,6 +75,7 @@
 #include "nvim/undo.h"
 #include "nvim/vim.h"
 #include "nvim/window.h"
+#include "nvim/winfloat.h"
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "window.c.generated.h"
@@ -734,204 +735,6 @@ void win_set_buf(win_T *win, buf_T *buf, bool noautocmd, Error *err)
   RedrawingDisabled--;
 }
 
-/// Create a new float.
-///
-/// @param wp      if NULL, allocate a new window, otherwise turn existing window into a float.
-///                It must then already belong to the current tabpage!
-/// @param last    make the window the last one in the window list.
-///                Only used when allocating the autocommand window.
-/// @param config  must already have been validated!
-win_T *win_new_float(win_T *wp, bool last, FloatConfig fconfig, Error *err)
-{
-  if (wp == NULL) {
-    wp = win_alloc(last ? lastwin : lastwin_nofloating(), false);
-    win_init(wp, curwin, 0);
-  } else {
-    assert(!last);
-    assert(!wp->w_floating);
-    if (firstwin == wp && lastwin_nofloating() == wp) {
-      // last non-float
-      api_set_error(err, kErrorTypeException,
-                    "Cannot change last window into float");
-      return NULL;
-    } else if (!win_valid(wp)) {
-      api_set_error(err, kErrorTypeException,
-                    "Cannot change window from different tabpage into float");
-      return NULL;
-    }
-    int dir;
-    winframe_remove(wp, &dir, NULL);
-    XFREE_CLEAR(wp->w_frame);
-    (void)win_comp_pos();  // recompute window positions
-    win_remove(wp, NULL);
-    win_append(lastwin_nofloating(), wp);
-  }
-  wp->w_floating = true;
-  wp->w_status_height = 0;
-  wp->w_winbar_height = 0;
-  wp->w_hsep_height = 0;
-  wp->w_vsep_width = 0;
-
-  win_config_float(wp, fconfig);
-  win_set_inner_size(wp, true);
-  wp->w_pos_changed = true;
-  redraw_later(wp, UPD_VALID);
-  return wp;
-}
-
-void win_set_minimal_style(win_T *wp)
-{
-  wp->w_p_nu = false;
-  wp->w_p_rnu = false;
-  wp->w_p_cul = false;
-  wp->w_p_cuc = false;
-  wp->w_p_spell = false;
-  wp->w_p_list = false;
-
-  // Hide EOB region: use " " fillchar and cleared highlighting
-  if (wp->w_p_fcs_chars.eob != ' ') {
-    char *old = wp->w_p_fcs;
-    wp->w_p_fcs = ((*old == NUL)
-                   ? xstrdup("eob: ")
-                   : concat_str(old, ",eob: "));
-    free_string_option(old);
-  }
-
-  // TODO(bfredl): this could use a highlight namespace directly,
-  // and avoid peculiarities around window options
-  char *old = wp->w_p_winhl;
-  wp->w_p_winhl = ((*old == NUL)
-                   ? xstrdup("EndOfBuffer:")
-                   : concat_str(old, ",EndOfBuffer:"));
-  free_string_option(old);
-  parse_winhl_opt(wp);
-
-  // signcolumn: use 'auto'
-  if (wp->w_p_scl[0] != 'a' || strlen(wp->w_p_scl) >= 8) {
-    free_string_option(wp->w_p_scl);
-    wp->w_p_scl = xstrdup("auto");
-  }
-
-  // foldcolumn: use '0'
-  if (wp->w_p_fdc[0] != '0') {
-    free_string_option(wp->w_p_fdc);
-    wp->w_p_fdc = xstrdup("0");
-  }
-
-  // colorcolumn: cleared
-  if (wp->w_p_cc != NULL && *wp->w_p_cc != NUL) {
-    free_string_option(wp->w_p_cc);
-    wp->w_p_cc = xstrdup("");
-  }
-
-  // statuscolumn: cleared
-  if (wp->w_p_stc != NULL && *wp->w_p_stc != NUL) {
-    free_string_option(wp->w_p_stc);
-    wp->w_p_stc = xstrdup("");
-  }
-}
-
-void win_config_float(win_T *wp, FloatConfig fconfig)
-{
-  wp->w_width = MAX(fconfig.width, 1);
-  wp->w_height = MAX(fconfig.height, 1);
-
-  if (fconfig.relative == kFloatRelativeCursor) {
-    fconfig.relative = kFloatRelativeWindow;
-    fconfig.row += curwin->w_wrow;
-    fconfig.col += curwin->w_wcol;
-    fconfig.window = curwin->handle;
-  } else if (fconfig.relative == kFloatRelativeMouse) {
-    int row = mouse_row, col = mouse_col, grid = mouse_grid;
-    win_T *mouse_win = mouse_find_win(&grid, &row, &col);
-    if (mouse_win != NULL) {
-      fconfig.relative = kFloatRelativeWindow;
-      fconfig.row += row;
-      fconfig.col += col;
-      fconfig.window = mouse_win->handle;
-    }
-  }
-
-  bool change_external = fconfig.external != wp->w_float_config.external;
-  bool change_border = (fconfig.border != wp->w_float_config.border
-                        || memcmp(fconfig.border_hl_ids,
-                                  wp->w_float_config.border_hl_ids,
-                                  sizeof fconfig.border_hl_ids) != 0);
-
-  wp->w_float_config = fconfig;
-
-  bool has_border = wp->w_floating && wp->w_float_config.border;
-  for (int i = 0; i < 4; i++) {
-    int new_adj = has_border && wp->w_float_config.border_chars[2 * i + 1][0];
-    if (new_adj != wp->w_border_adj[i]) {
-      change_border = true;
-      wp->w_border_adj[i] = new_adj;
-    }
-  }
-
-  if (!ui_has(kUIMultigrid)) {
-    wp->w_height = MIN(wp->w_height, Rows - win_border_height(wp));
-    wp->w_width = MIN(wp->w_width, Columns - win_border_width(wp));
-  }
-
-  win_set_inner_size(wp, true);
-  must_redraw = MAX(must_redraw, UPD_VALID);
-
-  wp->w_pos_changed = true;
-  if (change_external || change_border) {
-    wp->w_hl_needs_update = true;
-    redraw_later(wp, UPD_NOT_VALID);
-  }
-
-  // compute initial position
-  if (wp->w_float_config.relative == kFloatRelativeWindow) {
-    int row = (int)wp->w_float_config.row;
-    int col = (int)wp->w_float_config.col;
-    Error dummy = ERROR_INIT;
-    win_T *parent = find_window_by_handle(wp->w_float_config.window, &dummy);
-    if (parent) {
-      row += parent->w_winrow;
-      col += parent->w_wincol;
-      ScreenGrid *grid = &parent->w_grid;
-      int row_off = 0, col_off = 0;
-      grid_adjust(&grid, &row_off, &col_off);
-      row += row_off;
-      col += col_off;
-      if (wp->w_float_config.bufpos.lnum >= 0) {
-        pos_T pos = { wp->w_float_config.bufpos.lnum + 1,
-                      wp->w_float_config.bufpos.col, 0 };
-        int trow, tcol, tcolc, tcole;
-        textpos2screenpos(parent, &pos, &trow, &tcol, &tcolc, &tcole, true);
-        row += trow - 1;
-        col += tcol - 1;
-      }
-    }
-    api_clear_error(&dummy);
-    wp->w_winrow = row;
-    wp->w_wincol = col;
-  } else {
-    wp->w_winrow = (int)fconfig.row;
-    wp->w_wincol = (int)fconfig.col;
-  }
-
-  // changing border style while keeping border only requires redrawing border
-  if (fconfig.border) {
-    wp->w_redr_border = true;
-    redraw_later(wp, UPD_VALID);
-  }
-}
-
-void win_check_anchored_floats(win_T *win)
-{
-  for (win_T *wp = lastwin; wp && wp->w_floating; wp = wp->w_prev) {
-    // float might be anchored to moved window
-    if (wp->w_float_config.relative == kFloatRelativeWindow
-        && wp->w_float_config.window == win->handle) {
-      wp->w_pos_changed = true;
-    }
-  }
-}
-
 /// Return the number of fold columns to display
 int win_fdccol_count(win_T *wp)
 {
@@ -1659,7 +1462,7 @@ int win_split_ins(int size, int flags, win_T *new_wp, int dir)
 // The windows will both edit the same buffer.
 // WSP_NEWLOC may be specified in flags to prevent the location list from
 // being copied.
-static void win_init(win_T *newp, win_T *oldp, int flags)
+void win_init(win_T *newp, win_T *oldp, int flags)
 {
   newp->w_buffer = oldp->w_buffer;
   newp->w_s = &(oldp->w_buffer->b_s);
@@ -1736,24 +1539,6 @@ static void win_init_some(win_T *newp, win_T *oldp)
   win_copy_options(oldp, newp);
 }
 
-/// Return true if "win" is floating window in the current tab page.
-///
-/// @param  win  window to check
-bool win_valid_floating(const win_T *win)
-  FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
-{
-  if (win == NULL) {
-    return false;
-  }
-
-  FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
-    if (wp == win) {
-      return wp->w_floating;
-    }
-  }
-  return false;
-}
-
 /// Check if "win" is a pointer to an existing window in the current tabpage.
 ///
 /// @param  win  window to check
@@ -5112,7 +4897,7 @@ win_T *buf_jump_open_tab(buf_T *buf)
 
 /// @param hidden  allocate a window structure and link it in the window if
 //                 false.
-static win_T *win_alloc(win_T *after, bool hidden)
+win_T *win_alloc(win_T *after, bool hidden)
 {
   static int last_win_id = LOWEST_WIN_ID - 1;
 
@@ -5790,13 +5575,6 @@ int win_comp_pos(void)
   return row + global_stl_height();
 }
 
-void win_reconfig_floats(void)
-{
-  for (win_T *wp = lastwin; wp && wp->w_floating; wp = wp->w_prev) {
-    win_config_float(wp, wp->w_float_config);
-  }
-}
-
 // Update the position of the windows in frame "topfrp", using the width and
 // height of the frames.
 // "*row" and "*col" are the top-left position of the frame.  They are updated
@@ -6754,16 +6532,6 @@ void win_set_inner_size(win_T *wp, bool valid_cursor)
   wp->w_redr_status = true;
 }
 
-static int win_border_height(win_T *wp)
-{
-  return wp->w_border_adj[0] + wp->w_border_adj[2];
-}
-
-static int win_border_width(win_T *wp)
-{
-  return wp->w_border_adj[1] + wp->w_border_adj[3];
-}
-
 /// Set the width of a window.
 void win_new_width(win_T *wp, int width)
 {
@@ -7654,29 +7422,3 @@ win_T *lastwin_nofloating(void)
   }
   return res;
 }
-
-static int float_zindex_cmp(const void *a, const void *b)
-{
-  return (*(win_T **)b)->w_float_config.zindex - (*(win_T **)a)->w_float_config.zindex;
-}
-
-void win_float_remove(bool bang, int count)
-{
-  kvec_t(win_T *) float_win_arr = KV_INITIAL_VALUE;
-  for (win_T *wp = lastwin; wp && wp->w_floating; wp = wp->w_prev) {
-    kv_push(float_win_arr, wp);
-  }
-  qsort(float_win_arr.items, float_win_arr.size, sizeof(win_T *), float_zindex_cmp);
-  for (size_t i = 0; i < float_win_arr.size; i++) {
-    if (win_close(float_win_arr.items[i], false, false) == FAIL) {
-      break;
-    }
-    if (!bang) {
-      count--;
-      if (count == 0) {
-        break;
-      }
-    }
-  }
-  kv_destroy(float_win_arr);
-}
diff --git a/src/nvim/winfloat.c b/src/nvim/winfloat.c
new file mode 100644
index 0000000000..d502056699
--- /dev/null
+++ b/src/nvim/winfloat.c
@@ -0,0 +1,279 @@
+#include <stdbool.h>
+
+#include "klib/kvec.h"
+#include "nvim/api/private/helpers.h"
+#include "nvim/buffer_defs.h"
+#include "nvim/drawscreen.h"
+#include "nvim/globals.h"
+#include "nvim/grid.h"
+#include "nvim/mouse.h"
+#include "nvim/move.h"
+#include "nvim/option.h"
+#include "nvim/optionstr.h"
+#include "nvim/ui.h"
+#include "nvim/vim.h"
+#include "nvim/window.h"
+#include "nvim/winfloat.h"
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "winfloat.c.generated.h"
+#endif
+
+/// Create a new float.
+///
+/// @param wp      if NULL, allocate a new window, otherwise turn existing window into a float.
+///                It must then already belong to the current tabpage!
+/// @param last    make the window the last one in the window list.
+///                Only used when allocating the autocommand window.
+/// @param config  must already have been validated!
+win_T *win_new_float(win_T *wp, bool last, FloatConfig fconfig, Error *err)
+{
+  if (wp == NULL) {
+    wp = win_alloc(last ? lastwin : lastwin_nofloating(), false);
+    win_init(wp, curwin, 0);
+  } else {
+    assert(!last);
+    assert(!wp->w_floating);
+    if (firstwin == wp && lastwin_nofloating() == wp) {
+      // last non-float
+      api_set_error(err, kErrorTypeException,
+                    "Cannot change last window into float");
+      return NULL;
+    } else if (!win_valid(wp)) {
+      api_set_error(err, kErrorTypeException,
+                    "Cannot change window from different tabpage into float");
+      return NULL;
+    }
+    int dir;
+    winframe_remove(wp, &dir, NULL);
+    XFREE_CLEAR(wp->w_frame);
+    (void)win_comp_pos();  // recompute window positions
+    win_remove(wp, NULL);
+    win_append(lastwin_nofloating(), wp);
+  }
+  wp->w_floating = true;
+  wp->w_status_height = 0;
+  wp->w_winbar_height = 0;
+  wp->w_hsep_height = 0;
+  wp->w_vsep_width = 0;
+
+  win_config_float(wp, fconfig);
+  win_set_inner_size(wp, true);
+  wp->w_pos_changed = true;
+  redraw_later(wp, UPD_VALID);
+  return wp;
+}
+
+void win_set_minimal_style(win_T *wp)
+{
+  wp->w_p_nu = false;
+  wp->w_p_rnu = false;
+  wp->w_p_cul = false;
+  wp->w_p_cuc = false;
+  wp->w_p_spell = false;
+  wp->w_p_list = false;
+
+  // Hide EOB region: use " " fillchar and cleared highlighting
+  if (wp->w_p_fcs_chars.eob != ' ') {
+    char *old = wp->w_p_fcs;
+    wp->w_p_fcs = ((*old == NUL)
+                   ? xstrdup("eob: ")
+                   : concat_str(old, ",eob: "));
+    free_string_option(old);
+  }
+
+  // TODO(bfredl): this could use a highlight namespace directly,
+  // and avoid peculiarities around window options
+  char *old = wp->w_p_winhl;
+  wp->w_p_winhl = ((*old == NUL)
+                   ? xstrdup("EndOfBuffer:")
+                   : concat_str(old, ",EndOfBuffer:"));
+  free_string_option(old);
+  parse_winhl_opt(wp);
+
+  // signcolumn: use 'auto'
+  if (wp->w_p_scl[0] != 'a' || strlen(wp->w_p_scl) >= 8) {
+    free_string_option(wp->w_p_scl);
+    wp->w_p_scl = xstrdup("auto");
+  }
+
+  // foldcolumn: use '0'
+  if (wp->w_p_fdc[0] != '0') {
+    free_string_option(wp->w_p_fdc);
+    wp->w_p_fdc = xstrdup("0");
+  }
+
+  // colorcolumn: cleared
+  if (wp->w_p_cc != NULL && *wp->w_p_cc != NUL) {
+    free_string_option(wp->w_p_cc);
+    wp->w_p_cc = xstrdup("");
+  }
+
+  // statuscolumn: cleared
+  if (wp->w_p_stc != NULL && *wp->w_p_stc != NUL) {
+    free_string_option(wp->w_p_stc);
+    wp->w_p_stc = xstrdup("");
+  }
+}
+
+int win_border_height(win_T *wp)
+{
+  return wp->w_border_adj[0] + wp->w_border_adj[2];
+}
+
+int win_border_width(win_T *wp)
+{
+  return wp->w_border_adj[1] + wp->w_border_adj[3];
+}
+
+void win_config_float(win_T *wp, FloatConfig fconfig)
+{
+  wp->w_width = MAX(fconfig.width, 1);
+  wp->w_height = MAX(fconfig.height, 1);
+
+  if (fconfig.relative == kFloatRelativeCursor) {
+    fconfig.relative = kFloatRelativeWindow;
+    fconfig.row += curwin->w_wrow;
+    fconfig.col += curwin->w_wcol;
+    fconfig.window = curwin->handle;
+  } else if (fconfig.relative == kFloatRelativeMouse) {
+    int row = mouse_row, col = mouse_col, grid = mouse_grid;
+    win_T *mouse_win = mouse_find_win(&grid, &row, &col);
+    if (mouse_win != NULL) {
+      fconfig.relative = kFloatRelativeWindow;
+      fconfig.row += row;
+      fconfig.col += col;
+      fconfig.window = mouse_win->handle;
+    }
+  }
+
+  bool change_external = fconfig.external != wp->w_float_config.external;
+  bool change_border = (fconfig.border != wp->w_float_config.border
+                        || memcmp(fconfig.border_hl_ids,
+                                  wp->w_float_config.border_hl_ids,
+                                  sizeof fconfig.border_hl_ids) != 0);
+
+  wp->w_float_config = fconfig;
+
+  bool has_border = wp->w_floating && wp->w_float_config.border;
+  for (int i = 0; i < 4; i++) {
+    int new_adj = has_border && wp->w_float_config.border_chars[2 * i + 1][0];
+    if (new_adj != wp->w_border_adj[i]) {
+      change_border = true;
+      wp->w_border_adj[i] = new_adj;
+    }
+  }
+
+  if (!ui_has(kUIMultigrid)) {
+    wp->w_height = MIN(wp->w_height, Rows - win_border_height(wp));
+    wp->w_width = MIN(wp->w_width, Columns - win_border_width(wp));
+  }
+
+  win_set_inner_size(wp, true);
+  must_redraw = MAX(must_redraw, UPD_VALID);
+
+  wp->w_pos_changed = true;
+  if (change_external || change_border) {
+    wp->w_hl_needs_update = true;
+    redraw_later(wp, UPD_NOT_VALID);
+  }
+
+  // compute initial position
+  if (wp->w_float_config.relative == kFloatRelativeWindow) {
+    int row = (int)wp->w_float_config.row;
+    int col = (int)wp->w_float_config.col;
+    Error dummy = ERROR_INIT;
+    win_T *parent = find_window_by_handle(wp->w_float_config.window, &dummy);
+    if (parent) {
+      row += parent->w_winrow;
+      col += parent->w_wincol;
+      ScreenGrid *grid = &parent->w_grid;
+      int row_off = 0, col_off = 0;
+      grid_adjust(&grid, &row_off, &col_off);
+      row += row_off;
+      col += col_off;
+      if (wp->w_float_config.bufpos.lnum >= 0) {
+        pos_T pos = { wp->w_float_config.bufpos.lnum + 1,
+                      wp->w_float_config.bufpos.col, 0 };
+        int trow, tcol, tcolc, tcole;
+        textpos2screenpos(parent, &pos, &trow, &tcol, &tcolc, &tcole, true);
+        row += trow - 1;
+        col += tcol - 1;
+      }
+    }
+    api_clear_error(&dummy);
+    wp->w_winrow = row;
+    wp->w_wincol = col;
+  } else {
+    wp->w_winrow = (int)fconfig.row;
+    wp->w_wincol = (int)fconfig.col;
+  }
+
+  // changing border style while keeping border only requires redrawing border
+  if (fconfig.border) {
+    wp->w_redr_border = true;
+    redraw_later(wp, UPD_VALID);
+  }
+}
+
+static int float_zindex_cmp(const void *a, const void *b)
+{
+  return (*(win_T **)b)->w_float_config.zindex - (*(win_T **)a)->w_float_config.zindex;
+}
+
+void win_float_remove(bool bang, int count)
+{
+  kvec_t(win_T *) float_win_arr = KV_INITIAL_VALUE;
+  for (win_T *wp = lastwin; wp && wp->w_floating; wp = wp->w_prev) {
+    kv_push(float_win_arr, wp);
+  }
+  qsort(float_win_arr.items, float_win_arr.size, sizeof(win_T *), float_zindex_cmp);
+  for (size_t i = 0; i < float_win_arr.size; i++) {
+    if (win_close(float_win_arr.items[i], false, false) == FAIL) {
+      break;
+    }
+    if (!bang) {
+      count--;
+      if (count == 0) {
+        break;
+      }
+    }
+  }
+  kv_destroy(float_win_arr);
+}
+
+void win_check_anchored_floats(win_T *win)
+{
+  for (win_T *wp = lastwin; wp && wp->w_floating; wp = wp->w_prev) {
+    // float might be anchored to moved window
+    if (wp->w_float_config.relative == kFloatRelativeWindow
+        && wp->w_float_config.window == win->handle) {
+      wp->w_pos_changed = true;
+    }
+  }
+}
+
+void win_reconfig_floats(void)
+{
+  for (win_T *wp = lastwin; wp && wp->w_floating; wp = wp->w_prev) {
+    win_config_float(wp, wp->w_float_config);
+  }
+}
+
+/// Return true if "win" is floating window in the current tab page.
+///
+/// @param  win  window to check
+bool win_float_valid(const win_T *win)
+  FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
+{
+  if (win == NULL) {
+    return false;
+  }
+
+  FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
+    if (wp == win) {
+      return wp->w_floating;
+    }
+  }
+  return false;
+}
diff --git a/src/nvim/winfloat.h b/src/nvim/winfloat.h
new file mode 100644
index 0000000000..ba13c39551
--- /dev/null
+++ b/src/nvim/winfloat.h
@@ -0,0 +1,7 @@
+#pragma once
+
+#include "nvim/buffer_defs.h"
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "winfloat.h.generated.h"
+#endif