| # Copyright 2021 The Pigweed Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| # use this file except in compliance with the License. You may obtain a copy of |
| # the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations under |
| # the License. |
| """WindowManager""" |
| |
| import collections |
| import functools |
| import operator |
| from itertools import chain |
| from typing import Any |
| |
| from prompt_toolkit.layout import ( |
| Dimension, |
| HSplit, |
| VSplit, |
| ) |
| from prompt_toolkit.widgets import MenuItem |
| |
| import pw_console.widgets.checkbox |
| from pw_console.window_list import WindowList, DisplayMode |
| |
| # Weighted amount for adjusting window dimensions when enlarging and shrinking. |
| _WINDOW_SPLIT_ADJUST = 2 |
| |
| |
| class WindowManager: |
| """WindowManager class |
| |
| This class handles adding/removing/resizing windows and rendering the |
| prompt_toolkit split layout.""" |
| def __init__( |
| self, |
| application: Any, |
| ): |
| self.application = application |
| self.window_lists: collections.deque = collections.deque() |
| self.window_lists.append(WindowList(self)) |
| |
| def delete_empty_window_lists(self): |
| empty_lists = [ |
| window_list for window_list in self.window_lists |
| if window_list.empty() |
| ] |
| for empty_list in empty_lists: |
| self.window_lists.remove(empty_list) |
| |
| def create_root_container(self): |
| """Create a vertical or horizontal split container for all active |
| panes.""" |
| self.delete_empty_window_lists() |
| |
| for window_list in self.window_lists: |
| window_list.update_container() |
| |
| return HSplit([ |
| VSplit( |
| [window_list.container for window_list in self.window_lists], |
| padding=1, |
| padding_char='│', |
| padding_style='class:pane_separator', |
| # height=Dimension(weight=50), |
| # width=Dimension(weight=50), |
| ) |
| ]) |
| |
| def update_root_container_body(self): |
| # Replace the root MenuContainer body with the new split. |
| self.application.root_container.container.content.children[ |
| 1] = self.create_root_container() |
| |
| def _get_active_window_list_and_pane(self): |
| active_pane = None |
| active_window_list = None |
| for window_list in self.window_lists: |
| active_pane = window_list.get_current_active_pane() |
| if active_pane: |
| active_window_list = window_list |
| break |
| return active_window_list, active_pane |
| |
| def window_list_index(self, window_list: WindowList): |
| index = None |
| try: |
| index = self.window_lists.index(window_list) |
| except ValueError: |
| # Ignore ValueError which can be raised by the self.window_lists |
| # deque if the window_list can't be found. |
| pass |
| return index |
| |
| def run_action_on_active_pane(self, function_name): |
| _active_window_list, active_pane = ( |
| self._get_active_window_list_and_pane()) |
| if not hasattr(active_pane, function_name): |
| return |
| method_to_call = getattr(active_pane, function_name) |
| method_to_call() |
| return |
| |
| def move_pane_left(self): |
| active_window_list, active_pane = ( |
| self._get_active_window_list_and_pane()) |
| if not active_window_list: |
| return |
| |
| window_list_index = self.window_list_index(active_window_list) |
| # Move left should pick the previous window_list |
| target_window_list_index = window_list_index - 1 |
| |
| # Check if a new WindowList should be created on the left |
| if target_window_list_index == -1: |
| # Add the new WindowList |
| target_window_list = WindowList(self) |
| self.window_lists.appendleft(target_window_list) |
| # New index is 0 |
| target_window_list_index = 0 |
| |
| # Get the destination window_list |
| target_window_list = self.window_lists[target_window_list_index] |
| |
| # Move the pane |
| active_window_list.remove_pane_no_checks(active_pane) |
| target_window_list.add_pane(active_pane, add_at_beginning=True) |
| self.delete_empty_window_lists() |
| |
| def move_pane_right(self): |
| active_window_list, active_pane = ( |
| self._get_active_window_list_and_pane()) |
| if not active_window_list: |
| return |
| |
| window_list_index = self.window_list_index(active_window_list) |
| # Move right should pick the next window_list |
| target_window_list_index = window_list_index + 1 |
| |
| # Check if a new WindowList should be created |
| if target_window_list_index == len(self.window_lists): |
| # Add a new WindowList |
| target_window_list = WindowList(self) |
| self.window_lists.append(target_window_list) |
| |
| # Get the destination window_list |
| target_window_list = self.window_lists[target_window_list_index] |
| |
| # Move the pane |
| active_window_list.remove_pane_no_checks(active_pane) |
| target_window_list.add_pane(active_pane, add_at_beginning=True) |
| self.delete_empty_window_lists() |
| |
| def move_pane_up(self): |
| active_window_list, _active_pane = ( |
| self._get_active_window_list_and_pane()) |
| if not active_window_list: |
| return |
| |
| active_window_list.move_pane_up() |
| |
| def move_pane_down(self): |
| active_window_list, _active_pane = ( |
| self._get_active_window_list_and_pane()) |
| if not active_window_list: |
| return |
| |
| active_window_list.move_pane_down() |
| |
| def shrink_pane(self): |
| active_window_list, _active_pane = ( |
| self._get_active_window_list_and_pane()) |
| if not active_window_list: |
| return |
| |
| active_window_list.shrink_pane() |
| |
| def enlarge_pane(self): |
| active_window_list, _active_pane = ( |
| self._get_active_window_list_and_pane()) |
| if not active_window_list: |
| return |
| |
| active_window_list.enlarge_pane() |
| |
| def shrink_split(self): |
| if len(self.window_lists) < 2: |
| return |
| |
| active_window_list, _active_pane = ( |
| self._get_active_window_list_and_pane()) |
| if not active_window_list: |
| return |
| |
| self.adjust_split_size(active_window_list, -_WINDOW_SPLIT_ADJUST) |
| |
| def enlarge_split(self): |
| active_window_list, _active_pane = ( |
| self._get_active_window_list_and_pane()) |
| if not active_window_list: |
| return |
| |
| self.adjust_split_size(active_window_list, _WINDOW_SPLIT_ADJUST) |
| |
| def balance_window_sizes(self): |
| """Reset all splits and pane sizes.""" |
| self.reset_pane_sizes() |
| self.reset_split_sizes() |
| |
| def reset_split_sizes(self): |
| """Reset all active pane width and height to 50%""" |
| for window_list in self.window_lists: |
| window_list.height = Dimension(weight=50) |
| window_list.width = Dimension(weight=50) |
| |
| def adjust_split_size(self, |
| window_list: WindowList, |
| diff: int = _WINDOW_SPLIT_ADJUST): |
| """Increase or decrease a given window_list's vertical split width.""" |
| # No need to resize if only one split. |
| if len(self.window_lists) < 2: |
| return |
| |
| # Get the next split to subtract a weight value from. |
| window_list_index = self.window_list_index(window_list) |
| next_window_list_index = ((window_list_index + 1) % |
| len(self.window_lists)) |
| |
| # Use the previous window if we are on the last split |
| if window_list_index == len(self.window_lists) - 1: |
| next_window_list_index = window_list_index - 1 |
| |
| next_window_list = self.window_lists[next_window_list_index] |
| |
| # Get current weight values |
| old_weight = window_list.width.weight |
| next_old_weight = next_window_list.width.weight # type: ignore |
| |
| # Add to the current split |
| new_weight = old_weight + diff |
| if new_weight <= 0: |
| new_weight = old_weight |
| |
| # Subtract from the next split |
| next_new_weight = next_old_weight - diff |
| if next_new_weight <= 0: |
| next_new_weight = next_old_weight |
| |
| # Set new weight values |
| window_list.width.weight = new_weight |
| next_window_list.width.weight = next_new_weight # type: ignore |
| |
| def toggle_pane(self, pane): |
| """Toggle a pane on or off.""" |
| window_list, _pane_index = ( |
| self._find_window_list_and_pane_index(pane)) |
| |
| # Don't hide if tabbed mode is enabled, the container can't be rendered. |
| if window_list.display_mode == DisplayMode.TABBED: |
| return |
| pane.show_pane = not pane.show_pane |
| self.application.update_menu_items() |
| self.update_root_container_body() |
| |
| # Set focus to the top level menu. This has the effect of keeping the |
| # menu open if it's already open. |
| self.application.focus_main_menu() |
| |
| def add_pane_no_checks(self, pane: Any): |
| self.window_lists[0].add_pane_no_checks(pane) |
| |
| def add_pane(self, pane: Any): |
| self.window_lists[0].add_pane(pane, add_at_beginning=True) |
| |
| def first_window_list(self): |
| return self.window_lists[0] |
| |
| def active_panes(self): |
| """Return all active panes from all window lists.""" |
| return chain.from_iterable( |
| map(operator.attrgetter('active_panes'), self.window_lists)) |
| |
| def _find_window_list_and_pane_index(self, pane: Any): |
| pane_index = None |
| parent_window_list = None |
| for window_list in self.window_lists: |
| pane_index = window_list.pane_index(pane) |
| if pane_index is not None: |
| parent_window_list = window_list |
| break |
| return parent_window_list, pane_index |
| |
| def remove_pane(self, existing_pane: Any): |
| window_list, _pane_index = ( |
| self._find_window_list_and_pane_index(existing_pane)) |
| if window_list: |
| window_list.remove_pane(existing_pane) |
| |
| def reset_pane_sizes(self): |
| for window_list in self.window_lists: |
| window_list.reset_pane_sizes() |
| |
| def create_window_menu(self): |
| """Build the [Window] menu for the current set of window lists.""" |
| root_menu_items = [] |
| for window_list_index, window_list in enumerate(self.window_lists): |
| menu_items = [] |
| menu_items.append( |
| MenuItem( |
| 'Column {index} View Modes'.format( |
| index=window_list_index + 1), |
| children=[ |
| MenuItem( |
| '{check} {display_mode} Windows'.format( |
| display_mode=display_mode.value, |
| check=pw_console.widgets.checkbox. |
| to_checkbox_text( |
| window_list.display_mode == display_mode, |
| end='', |
| )), |
| handler=functools.partial( |
| window_list.set_display_mode, display_mode), |
| ) for display_mode in DisplayMode |
| ], |
| )) |
| menu_items.extend( |
| MenuItem( |
| '{index}: {title} {subtitle}'.format( |
| index=pane_index + 1, |
| title=pane.menu_title(), |
| subtitle=pane.pane_subtitle()), |
| children=[ |
| MenuItem( |
| '{check} Show Window'.format( |
| check=pw_console.widgets.checkbox. |
| to_checkbox_text(pane.show_pane, end='')), |
| handler=functools.partial(self.toggle_pane, pane), |
| ), |
| ] + [ |
| MenuItem(text, |
| handler=functools.partial( |
| self.application.run_pane_menu_option, |
| handler)) |
| for text, handler in pane.get_all_menu_options() |
| ], |
| ) for pane_index, pane in enumerate(window_list.active_panes)) |
| if window_list_index + 1 < len(self.window_lists): |
| menu_items.append(MenuItem('-')) |
| root_menu_items.extend(menu_items) |
| |
| menu = MenuItem( |
| '[Windows]', |
| children=root_menu_items, |
| ) |
| |
| return [menu] |
