Added in double-clicking on emptyview and tab bar. (#1478)

* Added in double-clicking on emptyview and tab bar.

* Fixed issue with split tabs.

* Early exit if no overlapping node.

* Changed category of command to tabbar.

* Additional cleanup.

* Changed for whether we should show tabs.

* Fixed erroneous hover.

data/core/commands/root.lua

@@ -176,3 +176,18 @@ command.add(function()
     end
   }
 )
+
+-- double clicking the tab bar, or on the emptyview should open a new doc
+command.add(function(x, y)
+  local node = x and y and core.root_view.root_node:get_child_overlapping_point(x, y)
+  return node and node:is_in_tab_area(x, y)
+end, {
+  ["tabbar:new-doc"] = function()
+    command.perform("core:new-doc")
+  end
+})
+command.add("core.emptyview", {
+  ["emptyview:new-doc"] = function()
+    command.perform("core:new-doc")
+  end
+})

data/core/keymap.lua

@@ -369,7 +369,7 @@ keymap.add_direct {
   ["shift+1lclick"] = "doc:select-to-cursor",
   ["ctrl+1lclick"] = "doc:split-cursor",
   ["1lclick"] = "doc:set-cursor",
-  ["2lclick"] = "doc:set-cursor-word",
+  ["2lclick"] = { "doc:set-cursor-word", "emptyview:new-doc", "tabbar:new-doc" },
   ["3lclick"] = "doc:set-cursor-line",
   ["shift+left"] = "doc:select-to-previous-char",
   ["shift+right"] = "doc:select-to-next-char",

data/core/node.lua

@@ -308,7 +308,7 @@ function Node:tab_hovered_update(px, py)
     if px >= cx and px < cx + cw and py >= y and py < y + h and config.tab_close_button then
       self.hovered_close = tab_index
     end
-  else
+  elseif #self.views > self:get_visible_tabs_number() then
     self.hovered_scroll_button = self:get_scroll_button_index(px, py) or 0
   end
 end
@@ -615,6 +615,13 @@ function Node:is_empty()
 end
 
 
+function Node:is_in_tab_area(x, y)
+  if not self:should_show_tabs() then return false end
+  local _, ty, _, th = self:get_scroll_button_rect(1)
+  return y >= ty and y < ty + th
+end
+
+
 function Node:close_all_docviews(keep_active)
   local node_active_view = self.active_view
   local lost_active_view = false

data/core/rootview.lua

@@ -291,16 +291,14 @@ function RootView:on_mouse_moved(x, y, dx, dy)
   if last_overlapping_node and last_overlapping_node ~= self.overlapping_node then
     last_overlapping_node:on_mouse_left()
   end
+  if not self.overlapping_node then return end
 
   local div = self.root_node:get_divider_overlapping_point(x, y)
-  local tab_index = self.overlapping_node and self.overlapping_node:get_tab_overlapping_point(x, y)
-  if self.overlapping_node and self.overlapping_node:get_scroll_button_index(x, y) then
+  if self.overlapping_node:get_scroll_button_index(x, y) or self.overlapping_node:is_in_tab_area(x, y) then
     core.request_cursor("arrow")
-  elseif div and (self.overlapping_node and not self.overlapping_node.active_view:scrollbar_overlaps_point(x, y)) then
+  elseif div and not self.overlapping_node.active_view:scrollbar_overlaps_point(x, y) then
     core.request_cursor(div.type == "hsplit" and "sizeh" or "sizev")
-  elseif tab_index then
-    core.request_cursor("arrow")
-  elseif self.overlapping_node then
+  else
     core.request_cursor(self.overlapping_node.active_view.cursor)
   end
 end