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

[Kai Willadsen <kaiw src gnome org>]

commit f2887a2f17ebb0c54ffe74b9b8e861938b2b4951
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Dec 9 07:25:58 2018 +1000

    melddoc: Move next-diff-changed to Signal

 meld/dirdiff.py    |  4 ++--
 meld/filediff.py   |  4 ++--
 meld/melddoc.py    | 10 +++++-----
 meld/meldwindow.py |  4 ++--
 meld/vcview.py     |  4 ++--
 5 files changed, 13 insertions(+), 13 deletions(-)
---
diff --git a/meld/dirdiff.py b/meld/dirdiff.py
index 88ced436..c3e58d66 100644
--- a/meld/dirdiff.py
+++ b/meld/dirdiff.py
@@ -1121,7 +1121,7 @@ class DirDiff(tree.TreeviewCommon, MeldDoc, Component):
 
         cursor_path, cursor_col = self.treeview[pane].get_cursor()
         if not cursor_path:
-            self.emit("next-diff-changed", False, False)
+            self.next_diff_changed_signal.emit(False, False)
             self.current_path = cursor_path
             return
 
@@ -1158,7 +1158,7 @@ class DirDiff(tree.TreeviewCommon, MeldDoc, Component):
             prev, next = self.model._find_next_prev_diff(cursor_path)
             self.prev_path, self.next_path = prev, next
             have_next_diffs = (prev is not None, next is not None)
-            self.emit("next-diff-changed", *have_next_diffs)
+            self.next_diff_changed_signal.emit(*have_next_diffs)
         self.current_path = cursor_path
 
     def on_treeview_key_press_event(self, view, event):
diff --git a/meld/filediff.py b/meld/filediff.py
index 76ace42f..c0cd67da 100644
--- a/meld/filediff.py
+++ b/meld/filediff.py
@@ -379,8 +379,8 @@ class FileDiff(MeldDoc, Component):
                 self.cursor.chunk = chunk
                 self.on_current_diff_changed()
             if prev != self.cursor.prev or next_ != self.cursor.next or force:
-                self.emit(
-                    "next-diff-changed", prev is not None, next_ is not None)
+                self.next_diff_changed_signal.emit(
+                    prev is not None, next_ is not None)
 
             prev_conflict, next_conflict = None, None
             for conflict in self.linediffer.conflicts:
diff --git a/meld/melddoc.py b/meld/melddoc.py
index b3953359..4268f10d 100644
--- a/meld/melddoc.py
+++ b/meld/melddoc.py
@@ -72,11 +72,6 @@ class MeldDoc(LabeledObjectMixin, GObject.GObject):
     """Base class for documents in the meld application.
     """
 
-    __gsignals__ = {
-        'next-diff-changed':    (GObject.SignalFlags.RUN_FIRST, None,
-                                 (bool, bool)),
-    }
-
     @GObject.Signal(name='close')
     def close_signal(self, exit_code: int) -> None:
         ...
@@ -90,6 +85,11 @@ class MeldDoc(LabeledObjectMixin, GObject.GObject):
     def file_changed_signal(self, path: str) -> None:
         ...
 
+    @GObject.Signal('next-diff-changed')
+    def next_diff_changed_signal(
+            self, have_prev: bool, have_next: bool) -> 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 eac820dd..0ca68345 100644
--- a/meld/meldwindow.py
+++ b/meld/meldwindow.py
@@ -354,8 +354,8 @@ class MeldWindow(Gtk.ApplicationWindow):
             self.set_title("Meld")
 
         if isinstance(newdoc, MeldDoc):
-            self.diff_handler = newdoc.connect("next-diff-changed",
-                                               self.on_next_diff_changed)
+            self.diff_handler = newdoc.next_diff_changed_signal.connect(
+                self.on_next_diff_changed)
         else:
             self.diff_handler = None
         if hasattr(newdoc, 'scheduler'):
diff --git a/meld/vcview.py b/meld/vcview.py
index e7255177..957ac3b5 100644
--- a/meld/vcview.py
+++ b/meld/vcview.py
@@ -763,7 +763,7 @@ class VcView(tree.TreeviewCommon, MeldDoc, Component):
     def on_treeview_cursor_changed(self, *args):
         cursor_path, cursor_col = self.treeview.get_cursor()
         if not cursor_path:
-            self.emit("next-diff-changed", False, False)
+            self.next_diff_changed_signal.emit(False, False)
             self.current_path = cursor_path
             return
 
@@ -796,7 +796,7 @@ class VcView(tree.TreeviewCommon, MeldDoc, Component):
             prev, next = self.model._find_next_prev_diff(cursor_path)
             self.prev_path, self.next_path = prev, next
             have_next_diffs = (prev is not None, next is not None)
-            self.emit("next-diff-changed", *have_next_diffs)
+            self.next_diff_changed_signal.emit(*have_next_diffs)
         self.current_path = cursor_path
 
     def next_diff(self, direction):