Implement awslabs#28: Add auto suggest completions.

Author: donnemartin

awsshell/app.py

@@ -16,6 +16,7 @@
 from prompt_toolkit.interface import AbortAction, AcceptAction
 from prompt_toolkit.key_binding.manager import KeyBindingManager
 from prompt_toolkit.utils import Callback
+from prompt_toolkit.auto_suggest import AutoSuggestFromHistory
 
 from awsshell.ui import create_default_layout
 
@@ -86,6 +87,8 @@ def create_layout(self):
     def create_buffer(self, completer, history):
         return Buffer(
             history=history,
+            auto_suggest=AutoSuggestFromHistory(),
+            enable_history_search=True,
             completer=completer,
             complete_while_typing=Always(),
             accept_action=AcceptAction.RETURN_DOCUMENT)
@@ -94,6 +97,7 @@ def create_application(self, completer, history):
         key_bindings_registry = KeyBindingManager(
             enable_search=True,
             enable_abort_and_exit_bindings=True,
+            enable_auto_suggest_bindings=True,
             enable_vi_mode=True,
             enable_system_bindings=False,
             enable_open_in_editor=False).registry

awsshell/ui.py

@@ -10,7 +10,7 @@
     MultiColumnCompletionsMenu
 from prompt_toolkit.layout.processors import PasswordProcessor, \
     HighlightSearchProcessor, HighlightSelectionProcessor, \
-    ConditionalProcessor
+    ConditionalProcessor, AppendAutoSuggestion
 from prompt_toolkit.layout.prompt import DefaultPrompt
 from prompt_toolkit.layout.screen import Char
 from prompt_toolkit.layout.toolbars import ValidationToolbar, \
@@ -77,6 +77,8 @@ def create_default_layout(app, message='',
             HighlightSearchProcessor(preview_search=Always()),
             HasFocus(SEARCH_BUFFER)),
         HighlightSelectionProcessor(),
+        ConditionalProcessor(
+            AppendAutoSuggestion(), HasFocus(DEFAULT_BUFFER) & ~IsDone()),
         ConditionalProcessor(PasswordProcessor(), is_password)
     ]