[chrome-remote-control] Interaction objects separate measurement/test code from page scrolling/drag…

tools/chrome_remote_control/chrome_remote_control/interaction.py

Index: tools/chrome_remote_control/chrome_remote_control/interaction.py
diff --git a/tools/chrome_remote_control/chrome_remote_control/interaction.py b/tools/chrome_remote_control/chrome_remote_control/interaction.py
new file mode 100644
index 0000000000000000000000000000000000000000..186c746e4384a926564ab3137908f623e25ac214
--- /dev/null
+++ b/tools/chrome_remote_control/chrome_remote_control/interaction.py
@@ -0,0 +1,32 @@
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+class InteractionNotSupported(Exception):
+  pass
+
+class Interaction(object):
+  """Represents an interaction that a user might try to perform to a page."""
+
+  def CustomizeBrowserOptions(self, options):
+    """Override to add test-specific options to the BrowserOptions object"""
+    pass
+
+  def SupportedForPage(self, page, tab):
+    raise NotImplementedError()
+
+  def PerformInteraction(self, page, tab, test):
+    raise NotImplementedError()
+
+  def CleanUp(self, page, tab):
+    raise NotImplementedError()
+
+_interaction_classes = {}
+def GetAllClasses():
+  return list(_interaction_classes.values())
+
+def FindClassWithName(name):
+  return _interaction_classes.get(name)
+
+def RegisterClass(name, interaction_class):
+  assert name not in _interaction_classes
+  _interaction_classes[name] = interaction_class