def __init__(self, question):
self._answer_control = AnswerControl()
@Condition
def answered():
return self.answer is not None
self.answered = answered
q = self.build_question()
self._header_control = QuestionHeaderControl(question)
widgets = [
VSplit(
[
Window(
self._header_control,
wrap_lines=True,
dont_extend_height=True,
dont_extend_width=True,
),
ConditionalContainer(
Window(
self._answer_control,
wrap_lines=True,
dont_extend_height=True,
),
self.answered,
),
]
)
]
if q is not None:
widgets.append(ConditionalContainer(q, ~self.answered))
widgets.extend([ConditionalContainer(ValidationToolbar(), ~self.answered)])
self._widget = HSplit(widgets, key_bindings=self.key_bindings())
def _create_layout(self):
"""
Create `Layout` for this prompt.
"""
dyncond = self._dyncond
# Create functions that will dynamically split the prompt. (If we have
# a multiline prompt.)
has_before_fragments, get_prompt_text_1, get_prompt_text_2 = \
_split_multiline_prompt(self._get_prompt)
default_buffer = self.default_buffer
search_buffer = self.search_buffer
# Create processors list.
all_input_processors = [
HighlightIncrementalSearchProcessor(),
HighlightSelectionProcessor(),
ConditionalProcessor(AppendAutoSuggestion(),
has_focus(default_buffer) & ~is_done),
ConditionalProcessor(PasswordProcessor(), dyncond('is_password')),
DisplayMultipleCursors(),
# Users can insert processors here.
DynamicProcessor(
lambda: merge_processors(self.input_processors or [])),
# For single line mode, show the prompt before the input.
ConditionalProcessor(
merge_processors([
BeforeInput(get_prompt_text_2),
ShowArg(),
]), ~dyncond('multiline'))
]
# Create bottom toolbars.
bottom_toolbar = ConditionalContainer(
Window(FormattedTextControl(lambda: self.bottom_toolbar,
style='class:bottom-toolbar.text'),
style='class:bottom-toolbar',
dont_extend_height=True,
height=Dimension(min=1)),
filter=~is_done & renderer_height_is_known
& Condition(lambda: self.bottom_toolbar is not None))
search_toolbar = SearchToolbar(
search_buffer, ignore_case=dyncond('search_ignore_case'))
search_buffer_control = SearchBufferControl(
buffer=search_buffer,
input_processors=[
ReverseSearchProcessor(),
ShowArg(),
],
ignore_case=dyncond('search_ignore_case'))
system_toolbar = SystemToolbar(
enable_global_bindings=dyncond('enable_system_prompt'))
def get_search_buffer_control():
" Return the UIControl to be focused when searching start. "
if _true(self.multiline):
return search_toolbar.control
else:
return search_buffer_control
default_buffer_control = BufferControl(
buffer=default_buffer,
search_buffer_control=get_search_buffer_control,
input_processors=all_input_processors,
include_default_input_processors=False,
lexer=DynamicLexer(lambda: self.lexer),
preview_search=True)
default_buffer_window = Window(
default_buffer_control,
height=self._get_default_buffer_control_height,
left_margins=[
# In multiline mode, use the window margin to display
# the prompt and continuation fragments.
ConditionalMargin(
PromptMargin(get_prompt_text_2, self._get_continuation),
filter=dyncond('multiline'),
)
],
wrap_lines=dyncond('wrap_lines'))
@Condition
def multi_column_complete_style():
return self.complete_style == CompleteStyle.MULTI_COLUMN
# Build the layout.
layout = HSplit([
# The main input, with completion menus floating on top of it.
FloatContainer(
HSplit([
ConditionalContainer(
Window(FormattedTextControl(get_prompt_text_1),
dont_extend_height=True),
Condition(has_before_fragments)),
ConditionalContainer(
default_buffer_window,
Condition(lambda: get_app().layout.current_control !=
search_buffer_control),
),
ConditionalContainer(
Window(search_buffer_control),
Condition(lambda: get_app().layout.current_control ==
search_buffer_control),
),
]),
[
# Completion menus.
Float(xcursor=True,
ycursor=True,
content=CompletionsMenu(
max_height=16,
scroll_offset=1,
extra_filter=has_focus(default_buffer)
& ~multi_column_complete_style)),
Float(xcursor=True,
ycursor=True,
content=MultiColumnCompletionsMenu(
show_meta=True,
extra_filter=has_focus(default_buffer)
& multi_column_complete_style)),
# The right prompt.
Float(right=0,
top=0,
hide_when_covering_content=True,
content=_RPrompt(lambda: self.rprompt)),
]),
ConditionalContainer(ValidationToolbar(), filter=~is_done),
ConditionalContainer(system_toolbar,
dyncond('enable_system_prompt') & ~is_done),
# In multiline mode, we use two toolbars for 'arg' and 'search'.
ConditionalContainer(
Window(FormattedTextControl(self._get_arg_text), height=1),
dyncond('multiline') & has_arg),
ConditionalContainer(search_toolbar,
dyncond('multiline') & ~is_done),
bottom_toolbar,
])
return Layout(layout, default_buffer_window)
def create_layout(python_input,
lexer=PythonLexer,
extra_body=None,
extra_toolbars=None,
extra_buffer_processors=None,
input_buffer_height=None):
D = Dimension
extra_body = [extra_body] if extra_body else []
extra_toolbars = extra_toolbars or []
extra_buffer_processors = extra_buffer_processors or []
input_buffer_height = input_buffer_height or D(min=6)
search_toolbar = SearchToolbar(python_input.search_buffer)
def create_python_input_window():
def menu_position():
"""
When there is no autocompletion menu to be shown, and we have a signature,
set the pop-up position at `bracket_start`.
"""
b = python_input.default_buffer
if b.complete_state is None and python_input.signatures:
row, col = python_input.signatures[0].bracket_start
index = b.document.translate_row_col_to_index(row - 1, col)
return index
return Window(
BufferControl(
buffer=python_input.default_buffer,
search_buffer_control=search_toolbar.control,
lexer=lexer,
include_default_input_processors=False,
input_processors=[
ConditionalProcessor(
processor=HighlightIncrementalSearchProcessor(),
filter=has_focus(SEARCH_BUFFER)
| has_focus(search_toolbar.control),
),
HighlightSelectionProcessor(),
DisplayMultipleCursors(),
# Show matching parentheses, but only while editing.
ConditionalProcessor(
processor=HighlightMatchingBracketProcessor(
chars='[](){}'),
filter=has_focus(DEFAULT_BUFFER) & ~is_done
& Condition(lambda: python_input.
highlight_matching_parenthesis)),
ConditionalProcessor(processor=AppendAutoSuggestion(),
filter=~is_done)
] + extra_buffer_processors,
menu_position=menu_position,
# Make sure that we always see the result of an reverse-i-search:
preview_search=True,
),
left_margins=[PythonPromptMargin(python_input)],
# Scroll offsets. The 1 at the bottom is important to make sure the
# cursor is never below the "Press [Meta+Enter]" message which is a float.
scroll_offsets=ScrollOffsets(bottom=1, left=4, right=4),
# As long as we're editing, prefer a minimal height of 6.
height=(lambda: (None if get_app().is_done or python_input.
show_exit_confirmation else input_buffer_height)),
wrap_lines=Condition(lambda: python_input.wrap_lines),
)
root_container = HSplit([
VSplit([
HSplit([
FloatContainer(
content=HSplit([create_python_input_window()] +
extra_body),
floats=[
Float(xcursor=True,
ycursor=True,
content=ConditionalContainer(
content=CompletionsMenu(scroll_offset=(
lambda: python_input.
completion_menu_scroll_offset),
max_height=12),
filter=show_completions_menu(python_input))),
Float(xcursor=True,
ycursor=True,
content=ConditionalContainer(
content=MultiColumnCompletionsMenu(),
filter=show_multi_column_completions_menu(
python_input))),
Float(xcursor=True,
ycursor=True,
content=signature_toolbar(python_input)),
Float(left=2,
bottom=1,
content=exit_confirmation(python_input)),
Float(bottom=0,
right=0,
height=1,
content=meta_enter_message(python_input),
hide_when_covering_content=True),
Float(bottom=1,
left=1,
right=0,
content=python_sidebar_help(python_input)),
]),
ArgToolbar(),
search_toolbar,
SystemToolbar(),
ValidationToolbar(),
ConditionalContainer(content=CompletionsToolbar(),
filter=show_completions_toolbar(
python_input)),
# Docstring region.
ConditionalContainer(content=Window(
height=D.exact(1), char='\u2500', style='class:separator'),
filter=HasSignature(python_input)
& ShowDocstring(python_input) & ~is_done),
ConditionalContainer(
content=Window(
BufferControl(
buffer=python_input.docstring_buffer,
lexer=SimpleLexer(style='class:docstring'),
#lexer=PythonLexer,
),
height=D(max=12)),
filter=HasSignature(python_input)
& ShowDocstring(python_input) & ~is_done),
]),
ConditionalContainer(content=HSplit([
python_sidebar(python_input),
Window(style='class:sidebar,separator', height=1),
python_sidebar_navigation(python_input),
]),
filter=ShowSidebar(python_input) & ~is_done)
]),
] + extra_toolbars + [
VSplit([
status_bar(python_input),
show_sidebar_button_info(python_input),
])
])
return Layout(root_container)
containers.HSplit([
containers.Window(content=buffer_control, height=1),
containers.Window(height=1, char="-", style="class:line"),
containers.Window(content=current_display, height=1),
containers.Window(height=1, char="-", style="class:line"),
containers.Window(content=content_display),
]),
floats=[
containers.Float(
xcursor=True,
ycursor=True,
content=menus.CompletionsMenu(max_height=12,
scroll_offset=1),
)
],
),
ValidationToolbar(),
]))
kb = KeyBindings()
@kb.add("c-g")
@kb.add("c-c")
def exit_(event):
event.app.exit()
app = Application(layout=layout, full_screen=True, key_bindings=kb)
app.run()
def __init__(self, editor, window_arrangement):
self.editor = editor # Back reference to editor.
self.window_arrangement = window_arrangement
# Mapping from (`window_arrangement.Window`, `EditorBuffer`) to a frame
# (Layout instance).
# We keep this as a cache in order to easily reuse the same frames when
# the layout is updated. (We don't want to create new frames on every
# update call, because that way, we would loose some state, like the
# vertical scroll offset.)
self._frames = {}
self._fc = FloatContainer(
content=VSplit([
Window(BufferControl()) # Dummy window
]),
floats=[
Float(xcursor=True,
ycursor=True,
content=CompletionsMenu(
max_height=12,
scroll_offset=2,
extra_filter=~has_focus(editor.command_buffer))),
Float(content=BufferListOverlay(editor), bottom=1, left=0),
Float(bottom=1,
left=0,
right=0,
height=1,
content=ConditionalContainer(
CompletionsToolbar(),
filter=has_focus(editor.command_buffer)
& ~_bufferlist_overlay_visible(editor)
& Condition(lambda: editor.show_wildmenu))),
Float(bottom=1,
left=0,
right=0,
height=1,
content=ValidationToolbar()),
Float(bottom=1,
left=0,
right=0,
height=1,
content=MessageToolbarBar(editor)),
Float(content=WelcomeMessageWindow(editor),
height=WELCOME_MESSAGE_HEIGHT,
width=WELCOME_MESSAGE_WIDTH),
])
search_toolbar = SearchToolbar(vi_mode=True,
search_buffer=editor.search_buffer)
self.search_control = search_toolbar.control
self.layout = Layout(
FloatContainer(content=HSplit([
TabsToolbar(editor),
self._fc,
CommandLine(editor),
ReportMessageToolbar(editor),
SystemToolbar(),
search_toolbar,
]),
floats=[
Float(right=0,
height=1,
bottom=0,
width=5,
content=SimpleArgToolbar()),
]))
def _create_application(self, editing_mode, erase_when_done):
def dyncond(attr_name):
"""
Dynamically take this setting from this 'Prompt' class.
`attr_name` represents an attribute name of this class. Its value
can either be a boolean or a `Filter`.
This returns something that can be used as either a `Filter`
or `Filter`.
"""
@Condition
def dynamic():
value = getattr(self, attr_name)
return to_filter(value)()
return dynamic
# Create functions that will dynamically split the prompt. (If we have
# a multiline prompt.)
has_before_fragments, get_prompt_text_1, get_prompt_text_2 = \
_split_multiline_prompt(self._get_prompt)
# Create buffers list.
def accept(buff):
""" Accept the content of the default buffer. This is called when
the validation succeeds. """
self.app.set_result(buff.document.text)
# Reset content before running again.
self.app.pre_run_callables.append(buff.reset)
default_buffer = Buffer(
name=DEFAULT_BUFFER,
# Make sure that complete_while_typing is disabled when
# enable_history_search is enabled. (First convert to Filter,
# to avoid doing bitwise operations on bool objects.)
complete_while_typing=Condition(
lambda: _true(self.complete_while_typing) and not _true(
self.enable_history_search) and not self.complete_style ==
CompleteStyle.READLINE_LIKE),
validate_while_typing=dyncond('validate_while_typing'),
enable_history_search=dyncond('enable_history_search'),
validator=DynamicValidator(lambda: self.validator),
completer=ThreadedCompleter(
completer=DynamicCompleter(lambda: self.completer),
in_thread=dyncond('complete_in_thread'),
),
history=DynamicHistory(lambda: self.history),
auto_suggest=DynamicAutoSuggest(lambda: self.auto_suggest),
accept_handler=accept,
get_tempfile_suffix=lambda: self.tempfile_suffix)
search_buffer = Buffer(name=SEARCH_BUFFER)
# Create processors list.
input_processor = merge_processors([
ConditionalProcessor(
# By default, only highlight search when the search
# input has the focus. (Note that this doesn't mean
# there is no search: the Vi 'n' binding for instance
# still allows to jump to the next match in
# navigation mode.)
HighlightSearchProcessor(preview_search=True),
has_focus(search_buffer)),
HighlightSelectionProcessor(),
ConditionalProcessor(AppendAutoSuggestion(),
has_focus(default_buffer) & ~is_done),
ConditionalProcessor(PasswordProcessor(), dyncond('is_password')),
DisplayMultipleCursors(),
# Users can insert processors here.
DynamicProcessor(lambda: self.extra_input_processor),
# For single line mode, show the prompt before the input.
ConditionalProcessor(
merge_processors([
BeforeInput(get_prompt_text_2),
ShowArg(),
]), ~dyncond('multiline'))
])
# Create bottom toolbars.
bottom_toolbar = ConditionalContainer(
Window(FormattedTextControl(lambda: self.bottom_toolbar,
style='class:bottom-toolbar.text'),
style='class:bottom-toolbar',
dont_extend_height=True,
height=Dimension(min=1)),
filter=~is_done & renderer_height_is_known
& Condition(lambda: self.bottom_toolbar is not None))
search_toolbar = SearchToolbar(
search_buffer,
get_search_state=lambda: default_buffer_control.get_search_state())
search_buffer_control = BufferControl(buffer=search_buffer,
input_processor=merge_processors(
[
ReverseSearchProcessor(),
ShowArg(),
]))
system_toolbar = SystemToolbar()
def get_search_buffer_control():
" Return the UIControl to be focused when searching start. "
if _true(self.multiline):
return search_toolbar.control
else:
return search_buffer_control
default_buffer_control = BufferControl(
buffer=default_buffer,
get_search_buffer_control=get_search_buffer_control,
input_processor=input_processor,
lexer=DynamicLexer(lambda: self.lexer),
preview_search=True)
default_buffer_window = Window(
default_buffer_control,
height=self._get_default_buffer_control_height,
left_margins=[
# In multiline mode, use the window margin to display
# the prompt and continuation fragments.
ConditionalMargin(
PromptMargin(get_prompt_text_2, self._get_continuation),
filter=dyncond('multiline'),
)
],
wrap_lines=dyncond('wrap_lines'))
@Condition
def multi_column_complete_style():
return self.complete_style == CompleteStyle.MULTI_COLUMN
# Build the layout.
layout = HSplit([
# The main input, with completion menus floating on top of it.
FloatContainer(
HSplit([
ConditionalContainer(
Window(FormattedTextControl(get_prompt_text_1),
dont_extend_height=True),
Condition(has_before_fragments)),
ConditionalContainer(
default_buffer_window,
Condition(lambda: get_app().layout.current_control !=
search_buffer_control),
),
ConditionalContainer(
Window(search_buffer_control),
Condition(lambda: get_app().layout.current_control ==
search_buffer_control),
),
]),
[
# Completion menus.
Float(xcursor=True,
ycursor=True,
content=CompletionsMenu(
max_height=16,
scroll_offset=1,
extra_filter=has_focus(default_buffer)
& ~multi_column_complete_style)),
Float(xcursor=True,
ycursor=True,
content=MultiColumnCompletionsMenu(
show_meta=True,
extra_filter=has_focus(default_buffer)
& multi_column_complete_style)),
# The right prompt.
Float(right=0,
top=0,
hide_when_covering_content=True,
content=_RPrompt(lambda: self.rprompt)),
]),
ConditionalContainer(ValidationToolbar(), filter=~is_done),
ConditionalContainer(system_toolbar,
dyncond('enable_system_prompt') & ~is_done),
# In multiline mode, we use two toolbars for 'arg' and 'search'.
ConditionalContainer(
Window(FormattedTextControl(self._get_arg_text), height=1),
dyncond('multiline') & has_arg),
ConditionalContainer(search_toolbar,
dyncond('multiline') & ~is_done),
bottom_toolbar,
])
# Default key bindings.
auto_suggest_bindings = load_auto_suggest_bindings()
open_in_editor_bindings = load_open_in_editor_bindings()
prompt_bindings = self._create_prompt_bindings()
# Create application
application = Application(
layout=Layout(layout, default_buffer_window),
style=DynamicStyle(lambda: self.style),
include_default_pygments_style=dyncond(
'include_default_pygments_style'),
clipboard=DynamicClipboard(lambda: self.clipboard),
key_bindings=merge_key_bindings([
merge_key_bindings([
auto_suggest_bindings,
ConditionalKeyBindings(
open_in_editor_bindings,
dyncond('enable_open_in_editor')
& has_focus(DEFAULT_BUFFER)), prompt_bindings
]),
ConditionalKeyBindings(
system_toolbar.get_global_key_bindings(),
dyncond('enable_system_prompt')),
DynamicKeyBindings(lambda: self.extra_key_bindings),
]),
mouse_support=dyncond('mouse_support'),
editing_mode=editing_mode,
erase_when_done=erase_when_done,
reverse_vi_search_direction=True,
# I/O.
input=self.input,
output=self.output)
# During render time, make sure that we focus the right search control
# (if we are searching). - This could be useful if people make the
# 'multiline' property dynamic.
'''
def on_render(app):
multiline = _true(self.multiline)
current_control = app.layout.current_control
if multiline:
if current_control == search_buffer_control:
app.layout.current_control = search_toolbar.control
app.invalidate()
else:
if current_control == search_toolbar.control:
app.layout.current_control = search_buffer_control
app.invalidate()
app.on_render += on_render
'''
return application, default_buffer, default_buffer_control