Add full filename path in window's title

Optimal implementation to limite computations in core.step.

data/core/doc/init.lua

@@ -65,11 +65,17 @@ function Doc:reset_syntax()
 end
 
 
+function Doc:set_filename(filename)
+  filename = common.normalize_path(filename)
+  self.filename = filename
+  self.abs_filename = common.home_encode(system.absolute_path(filename))
+end
+
+
 function Doc:load(filename)
   local fp = assert( io.open(filename, "rb") )
-  filename = common.normalize_path(filename)
   self:reset()
-  self.filename = filename
+  self:set_filename(filename)
   self.lines = {}
   for line in fp:lines() do
     if line:byte(-1) == 13 then
@@ -94,7 +100,9 @@ function Doc:save(filename)
     fp:write(line)
   end
   fp:close()
-  self.filename = common.normalize_path(filename or self.filename)
+  if filename then
+    self:set_filename(filename)
+  end
   self:reset_syntax()
   self:clean()
 end

data/core/docview.lua

@@ -90,6 +90,12 @@ function DocView:get_name()
 end
 
 
+function DocView:get_filename()
+  local post = self.doc:is_dirty() and "*" or ""
+  return (self.doc.abs_filename and self.doc.abs_filename or "unsaved") .. post
+end
+
+
 function DocView:get_scrollable_size()
   return self:get_line_height() * (#self.doc.lines - 1) + self.size.y
 end

data/core/init.lua

@@ -719,6 +719,17 @@ function core.on_event(type, ...)
 end
 
 
+local function get_title_filename(view)
+  local doc_filename = view.get_filename and view:get_filename() or view:get_name()
+  return (doc_filename ~= "---") and doc_filename or ""
+end
+
+
+local function compose_window_title(title)
+  return title == "" and "lite" or title .. " - lite"
+end
+
+
 function core.step()
   -- handle events
   local did_keymap = false
@@ -761,11 +772,10 @@ function core.step()
   end
 
   -- update window title
-  local name = core.active_view:get_name()
-  local title = (name ~= "---") and ( (core.active_view:is(DocView) and core.active_view.doc.filename or name) .. " - lite") or  "lite"
-  if title ~= core.window_title then
-    system.set_window_title(title)
-    core.window_title = title
+  local current_title = get_title_filename(core.active_view)
+  if current_title ~= core.window_title then
+    system.set_window_title(compose_window_title(current_title))
+    core.window_title = current_title
   end
 
   -- draw