1 files changed, 77 insertions, 0 deletions
diff --git a/plugins/ephemeral_tabs.lua b/plugins/ephemeral_tabs.lua
new file mode 100644
index 0000000..dea4261
--- /dev/null
+++ b/plugins/ephemeral_tabs.lua
@@ -0,0 +1,77 @@
+-- mod-version:2 -- lite-xl 2.0
+local core = require "core"
+local command = require "core.command"
+local RootView = require "core.rootview"
+local DocView = require "core.docview"
+local Doc = require "core.doc"
+local TreeView = require "plugins.treeview"
+
+local RootView_open_doc = RootView.open_doc
+function RootView:open_doc(doc)
+  local docview = RootView_open_doc(self, doc)
+  -- The absence of the ephemeral flag means that before this moment in this
+  -- node this document was not exists
+  if docview.ephemeral == nil then
+    local node = self:get_active_node_default()
+    -- We assume that ephemeral tab is always the last one
+    -- But user can drag and drop tabs so full check is needed
+    for i, v in ipairs(node.views) do
+      if v.ephemeral then
+        node:close_view(self.root_node, v)
+      end
+    end
+    docview.ephemeral = true
+  end
+  return docview
+end
+
+local Doc_get_name = DocView.get_name
+function DocView:get_name()
+  return self.doc and self.ephemeral and ("~ " .. Doc_get_name(self) .. " ~")
+          or Doc_get_name(self)
+end
+
+-- Any change to the document makes the tab normal
+local Doc_on_text_change = Doc.on_text_change
+function Doc:on_text_change(type)
+  core.active_view.ephemeral = false
+  Doc_on_text_change(self, type)
+end
+
+-- Double clicking in the TreeView makes the tab normal
+local TreeView_on_mouse_pressed = TreeView.on_mouse_pressed
+function TreeView:on_mouse_pressed(button, x, y, clicks)
+  local result = TreeView_on_mouse_pressed(self, button, x, y, clicks)
+  if (clicks > 1) and (core.active_view.doc ~= nil) then
+    core.active_view.ephemeral = false
+  end
+  return result
+end
+
+-- Double clicking on a tab makes it normal
+local RootView_on_mouse_pressed = RootView.on_mouse_pressed
+function RootView:on_mouse_pressed(button, x, y, clicks)
+  local result = RootView_on_mouse_pressed(self, button, x, y, clicks)
+  if clicks > 1 then
+    local node = self.root_node:get_child_overlapping_point(x, y)
+    local idx = node:get_tab_overlapping_point(x, y)
+    if idx then
+      node.views[idx].ephemeral = false
+    end
+  end
+  return result
+end
+
+-- Dragging a tab makes it normal
+local RootView_on_mouse_released = RootView.on_mouse_released
+function RootView:on_mouse_released(button, x, y, ...)
+  if self.dragged_node then
+    if button == "left" then
+      if self.dragged_node.dragging then
+        local view = self.dragged_node.node.views[self.dragged_node.idx]
+        view.ephemeral = false
+      end
+    end
+  end
+  return RootView_on_mouse_released(self, button, x, y, ...)
+end