[meld/deprecation-cleanup] melddoc: Move file-changed to Signal

[Kai Willadsen <kaiw src gnome org>]

commit 3319cba74e5d46031eab579aa0bb8ec76a92993f
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Dec 9 07:07:37 2018 +1000

    melddoc: Move file-changed to Signal

 meld/filediff.py   | 2 +-
 meld/melddoc.py    | 6 ++++--
 meld/meldwindow.py | 2 +-
 3 files changed, 6 insertions(+), 4 deletions(-)
---
diff --git a/meld/filediff.py b/meld/filediff.py
index d091b638..76ace42f 100644
--- a/meld/filediff.py
+++ b/meld/filediff.py
@@ -1631,7 +1631,7 @@ class FileDiff(MeldDoc, Component):
             self.state = ComparisonState.SavingError
             return
 
-        self.emit('file-changed', gfile.get_path())
+        self.file_changed_signal.emit(gfile.get_path())
         self.undosequence.checkpoint(buf)
         buf.data.update_mtime()
         if pane == 1 and self.num_panes == 3:
diff --git a/meld/melddoc.py b/meld/melddoc.py
index f5f7aa3f..6f4b4dc3 100644
--- a/meld/melddoc.py
+++ b/meld/melddoc.py
@@ -73,8 +73,6 @@ class MeldDoc(LabeledObjectMixin, GObject.GObject):
     """
 
     __gsignals__ = {
-        'file-changed':         (GObject.SignalFlags.RUN_FIRST, None,
-                                 (GObject.TYPE_STRING,)),
         'create-diff':          (GObject.SignalFlags.RUN_FIRST, None,
                                  (GObject.TYPE_PYOBJECT,
                                   GObject.TYPE_PYOBJECT)),
@@ -86,6 +84,10 @@ class MeldDoc(LabeledObjectMixin, GObject.GObject):
     def close_signal(self, exit_code: int) -> None:
         ...
 
+    @GObject.Signal('file-changed')
+    def file_changed_signal(self, path: str) -> None:
+        ...
+
     @GObject.Signal
     def tab_state_changed(self, old_state: int, new_state: int) -> None:
         ...
diff --git a/meld/meldwindow.py b/meld/meldwindow.py
index bcc91c89..98877036 100644
--- a/meld/meldwindow.py
+++ b/meld/meldwindow.py
@@ -527,7 +527,7 @@ class MeldWindow(Gtk.ApplicationWindow):
         if hasattr(page, 'scheduler'):
             self.scheduler.add_scheduler(page.scheduler)
         if isinstance(page, MeldDoc):
-            page.connect("file-changed", self.on_file_changed)
+            page.file_changed_signal.connect(self.on_file_changed)
             page.connect("create-diff", lambda obj, arg, kwargs:
                          self.append_diff(arg, **kwargs))
             page.tab_state_changed.connect(self.on_page_state_changed)