refactor buffers

This splits buffers.py, which contained all buffer classes, into several smaller files.
issue #1226

1 files changed, 40 insertions, 0 deletions

diff --git a/alot/buffers/buffer.py b/alot/buffers/buffer.py
new file mode 100644
index 00000000..fc0e7af7
--- /dev/null
+++ b/alot/buffers/buffer.py
@@ -0,0 +1,40 @@
+# Copyright (C) 2011-2018  Patrick Totzke <patricktotzke@gmail.com>
+# This file is released under the GNU GPL, version 3 or a later revision.
+# For further details see the COPYING file
+
+
+class Buffer(object):
+    """Abstract base class for buffers."""
+
+    modename = None  # mode identifier for subclasses
+
+    def __init__(self, ui, widget):
+        self.ui = ui
+        self.body = widget
+
+    def __str__(self):
+        return '[%s]' % self.modename
+
+    def render(self, size, focus=False):
+        return self.body.render(size, focus)
+
+    def selectable(self):
+        return self.body.selectable()
+
+    def rebuild(self):
+        """tells the buffer to (re)construct its visible content."""
+        pass
+
+    def keypress(self, size, key):
+        return self.body.keypress(size, key)
+
+    def cleanup(self):
+        """called before buffer is closed"""
+        pass
+
+    def get_info(self):
+        """
+        return dict of meta infos about this buffer.
+        This can be requested to be displayed in the statusbar.
+        """
+        return {}