Reformat existing files so all lines are under 88 characters

android/src/toga_android/app.py

@@ -68,7 +68,8 @@ def onActivityResult(self, requestCode, resultCode, resultData):
 
     def onRequestPermissionsResult(self, requestCode, permissions, grantResults):
         print(
-            f"Toga app: onRequestPermissionsResult {requestCode=} {permissions=} {grantResults=}"
+            f"Toga app: onRequestPermissionsResult "
+            f"{requestCode=} {permissions=} {grantResults=}"
         )
         try:
             # Retrieve the completion callback and invoke it.
@@ -227,10 +228,12 @@ def exit(self):
         pass  # pragma: no cover
 
     def main_loop(self):
-        # In order to support user asyncio code, start the Python/Android cooperative event loop.
+        # In order to support user asyncio code, start the Python/Android
+        # cooperative event loop.
         self.loop.run_forever_cooperatively()
 
-        # On Android, Toga UI integrates automatically into the main Android event loop by virtue
+        # On Android, Toga UI integrates automatically into the main Android event
+        # loop by virtue
         # of the Android Activity system.
         self.create()
 

android/src/toga_android/keys.py

@@ -70,7 +70,8 @@
     KeyEvent.KEYCODE_Y: Key.Y,
     KeyEvent.KEYCODE_Z: Key.Z,
     KeyEvent.KEYCODE_TAB: Key.TAB,
-    # KeyEvent.KEYCODE_LEFT_BRACKET: Key.OPEN_BRACKET,TODO Create handling for num row special keys
+    # KeyEvent.KEYCODE_LEFT_BRACKET: Key.OPEN_BRACKET,
+    #   TODO Create handling for num row special keys
     # KeyEvent.KEYCODE_RIGHT_BRACKET: Key.CLOSE_BRACKET,
     # KeyEvent.KEYCODE_BACKSLASH: Key.BACKSLASH,
     # KeyEvent.KEY_braceleft: Key.OPEN_BRACE,

android/src/toga_android/widgets/detailedlist.py

@@ -100,7 +100,8 @@ class DetailedList(Widget):
     def create(self):
         if SwipeRefreshLayout is None:  # pragma: no cover
             raise RuntimeError(
-                "Unable to import SwipeRefreshLayout. Ensure that the AndroidX Swipe Refresh Layout "
+                "Unable to import SwipeRefreshLayout. "
+                "Ensure that the AndroidX Swipe Refresh Layout "
                 "widget package (androidx.swiperefreshlayout:swiperefreshlayout:1.1.0) "
                 "is listed in your app's dependencies."
             )

android/src/toga_android/widgets/imageview.py

@@ -26,7 +26,8 @@ def rehint(self):
         # we need to convert all sizes into physical pixels.
         dpi = self.native.getContext().getResources().getDisplayMetrics().densityDpi
         # Toga needs to know how the current DPI compares to the platform default,
-        # which is 160: https://developer.android.com/training/multiscreen/screendensities
+        # which is 160:
+        #   https://developer.android.com/training/multiscreen/screendensities
         scale = float(dpi) / 160
 
         width, height, aspect_ratio = rehint_imageview(

android/src/toga_android/widgets/label.py

@@ -30,9 +30,9 @@ def set_font(self, font):
         )
 
     def set_background_color(self, value):
-        # In the case of EditText, this causes any custom color to hide the bottom border
-        # line, but it's better than set_background_filter, which affects *only* the
-        # bottom border line.
+        # In the case of EditText, this causes any custom color to hide the bottom
+        # border line, but it's better than set_background_filter, which affects *only*
+        # the bottom border line.
         self.set_background_simple(value)
 
     def set_color(self, value):

android/tests_backend/widgets/progressbar.py

@@ -20,5 +20,6 @@ def position(self):
         return self.native.getProgress() / self.native.getMax()
 
     async def wait_for_animation(self):
-        # Android ProgressBar has internal animation handling; no special handling required.
+        # Android ProgressBar has internal animation handling;
+        #   no special handling required.
         pass

android/tests_backend/widgets/textinput.py

@@ -51,7 +51,8 @@ def readonly(self):
             # TYPE_TEXT_FLAG_NO_SUGGESTIONS is not set
             if not focusable:
                 raise ValueError(
-                    "TYPE_TEXT_FLAG_NO_SUGGESTIONS has been set when the input is readonly."
+                    "TYPE_TEXT_FLAG_NO_SUGGESTIONS "
+                    "has been set when the input is readonly."
                 )
 
         return not focusable

cocoa/src/toga_cocoa/app.py

@@ -387,8 +387,8 @@ def enter_full_screen(self, windows):
         )
 
         for window, screen in zip(windows, NSScreen.screens):
-            # The widgets are actually added to window._impl.container.native, instead of
-            # window.content._impl.native. And window._impl.native.contentView is
+            # The widgets are actually added to window._impl.container.native, instead
+            # of window.content._impl.native. And window._impl.native.contentView is
             # window._impl.container.native. Hence, we need to go fullscreen on
             # window._impl.container.native instead.
             window._impl.container.native.enterFullScreenMode(screen, withOptions=opts)

cocoa/src/toga_cocoa/constraints.py

@@ -55,13 +55,14 @@ def container(self):
 
     @container.setter
     def container(self, value):
-        # This will *always* remove and then add constraints. It relies on the base widget to
-        # *not* invoke this setter unless the container is actually changing.
+        # This will *always* remove and then add constraints. It relies on the base
+        # widget to *not* invoke this setter unless the container is actually changing.
 
         self._remove_constraints()
         self._container = value
         if value is not None:
-            # print(f"Add constraints for {self.widget} in {self.container} {self.widget.interface.layout})
+            # print(f"Add constraints for {self.widget} in {self.container}
+            # {self.widget.interface.layout})
             self.left_constraint = NSLayoutConstraint.constraintWithItem(
                 self.widget.native,
                 attribute__1=NSLayoutAttributeLeft,
@@ -107,7 +108,8 @@ def container(self, value):
             self.container.native.addConstraint(self.height_constraint)
 
     def update(self, x, y, width, height):
-        # print(f"UPDATE CONSTRAINTS {self.widget} in {self.container} {width}x{height}@{x},{y}")
+        # print(f"UPDATE CONSTRAINTS {self.widget} in {self.container}
+        # {width}x{height}@{x},{y}")
         self.left_constraint.constant = x
         self.top_constraint.constant = y
 

cocoa/src/toga_cocoa/hardware/camera.py

@@ -88,7 +88,8 @@ def create_preview_window(self):
             style=Pack(width=200),
         )
 
-        # The shutter button. Initially disabled until we know we have a camera available
+        # The shutter button. Initially disabled until we know we
+        # have a camera available
         self.shutter_button = toga.Button(
             icon=toga.Icon("camera", system=True),
             on_press=self.take_photo,
@@ -214,7 +215,7 @@ def change_camera(self, widget=None, **kwargs):
         self._update_flash_mode()
 
     def close_window(self, widget, **kwargs):
-        # If the user actually takes a photo, the window will be programmatically closed.
+        # If the user actually takes a photo the window will be programmatically closed.
         # This handler is only triggered if the user manually closes the window.
         # Stop the camera session
         self.camera_session.stopRunning()
@@ -261,7 +262,8 @@ def __init__(self, interface):
             msg = (
                 "Application metadata does not declare that the app will use "
                 "the camera. See "
-                "https://toga.readthedocs.io/en/stable/reference/api/hardware/camera.html"
+                "https://toga.readthedocs.io"
+                "/en/stable/reference/api/hardware/camera.html"
             )
             if self.interface.app.is_bundled:
                 raise RuntimeError(msg)
@@ -278,9 +280,12 @@ def has_permission(self, allow_unknown=False):
         #     tccutil reset Camera <bundleID>
         #
         # e.g.
-        #     tccutil reset Camera org.beeware.appname  # for a bundled app
-        #     tccutil reset Camera com.microsoft.VSCode  # for code running in Visual Studio
-        #     tccutil reset Camera com.apple.Terminal  # for code running in the Apple terminal
+        #     tccutil reset Camera org.beeware.appname
+        #         # for a bundled app
+        #     tccutil reset Camera com.microsoft.VSCode
+        #         # for code running in Visual Studio
+        #     tccutil reset Camera com.apple.Terminal
+        #         # for code running in the Apple terminal
 
         if allow_unknown:
             valid_values = {

cocoa/src/toga_cocoa/widgets/internal/refresh.py

@@ -30,10 +30,11 @@
     NSView,
 )
 
-#########################################################################################
+########################################################################################
 # This is broadly derived from Alex Zielenski's ScrollToRefresh implementation:
-# https://github.com/alexzielenski/ScrollToRefresh/blob/master/ScrollToRefresh/src/EQSTRScrollView.m
-# =======================================================================================
+# https://github.com/
+#   alexzielenski/ScrollToRefresh/blob/master/ScrollToRefresh/src/EQSTRScrollView.m
+# ======================================================================================
 # ScrollToRefresh
 #
 # Copyright (C) 2011 by Alex Zielenski.
@@ -54,7 +55,7 @@
 # HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 # CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
 # OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-# =======================================================================================
+# ======================================================================================
 #
 # HOW THIS WORKS
 #
@@ -78,7 +79,7 @@
 #
 # All of this is also gated by the refreshEnabled flag; when refresh is disabled, it
 # also makes the refresh widget invisible so that it can't be seen in a bounce scroll.
-#########################################################################################
+########################################################################################
 
 # The height of the refresh header; also the minimum pull height to trigger a refresh.
 HEADER_HEIGHT = 45.0

cocoa/src/toga_cocoa/widgets/mapview.py

@@ -131,9 +131,9 @@ def get_zoom(self):
 
     def set_zoom(self, zoom):
         if self.backlog is None:
-            # The zoom level indicates how many degrees of longitude will be displayed in a
-            # 256 pixel horizontal range. Determine how many degrees of longitude that is,
-            # and scale to the size of the visible horizontal space.
+            # The zoom level indicates how many degrees of longitude will be displayed
+            # in a 256 pixel horizontal range. Determine how many degrees of longitude
+            # that is, and scale to the size of the visible horizontal space.
 
             # The horizontal axis can't show more than 360 degrees of longitude, so clip
             # the range to that value. The OSM zoom level is based on 360 degrees of
@@ -144,8 +144,8 @@ def set_zoom(self, zoom):
             )
 
             # If we're currently panning to a new location, use the desired *future*
-            # location as the center of the zoom region. Otherwise use the current center
-            # coordinate.
+            # location as the center of the zoom region. Otherwise use the current
+            # center coordinate.
             center = (
                 self.future_location
                 if self.future_location is not None

cocoa/src/toga_cocoa/widgets/numberinput.py

@@ -93,7 +93,7 @@ def create(self):
         # Add constraints to lay out the input and stepper.
         # Stepper is always top right corner.
         self.native.addConstraint(
-            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(
+            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(  # noqa: E501
                 self.native,
                 NSLayoutAttributeTop,
                 NSLayoutRelationEqual,
@@ -104,7 +104,7 @@ def create(self):
             )
         )
         self.native.addConstraint(
-            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(
+            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(  # noqa: E501
                 self.native,
                 NSLayoutAttributeRight,
                 NSLayoutRelationEqual,
@@ -117,7 +117,7 @@ def create(self):
 
         # Stepper height matches container box height
         self.native.addConstraint(
-            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(
+            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(  # noqa: E501
                 self.native,
                 NSLayoutAttributeBottom,
                 NSLayoutRelationEqual,
@@ -130,7 +130,7 @@ def create(self):
 
         # Input is always left, centred vertically on the stepper
         self.native.addConstraint(
-            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(
+            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(  # noqa: E501
                 self.native_stepper,
                 NSLayoutAttributeCenterY,
                 NSLayoutRelationEqual,
@@ -141,7 +141,7 @@ def create(self):
             )
         )
         self.native.addConstraint(
-            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(
+            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(  # noqa: E501
                 self.native,
                 NSLayoutAttributeLeft,
                 NSLayoutRelationEqual,
@@ -154,7 +154,7 @@ def create(self):
 
         # Stepper and input meet in the middle with a small gap
         self.native.addConstraint(
-            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(
+            NSLayoutConstraint.constraintWithItem_attribute_relatedBy_toItem_attribute_multiplier_constant_(  # noqa: E501
                 self.native_stepper,
                 NSLayoutAttributeLeft,
                 NSLayoutRelationEqual,
@@ -183,7 +183,8 @@ def set_background_color(self, color):
 
     def has_focus(self):
         # When the NSTextField gets focus, a field editor is created, and that editor
-        # has the original widget as the delegate. The first responder is the Field Editor.
+        # has the original widget as the delegate. The first responder is the
+        # Field Editor.
         return isinstance(self.native.window.firstResponder, NSTextView) and (
             self.native.window.firstResponder.delegate == self.native_input
         )

cocoa/src/toga_cocoa/widgets/table.py

@@ -119,7 +119,8 @@ def tableViewSelectionDidChange_(self, notification) -> None:
     #         value = getattr(data_row, col_identifier, None)
     #         if isinstance(value, toga.Widget):
     #             # if the cell value is a widget, use its height
-    #             heights.append(value._impl.native.intrinsicContentSize().height + margin)
+    #             heights.append(value._impl.native.intrinsicContentSize().height
+    #                            + margin)
     #
     #     return max(heights)
 

cocoa/src/toga_cocoa/widgets/textinput.py

@@ -162,7 +162,8 @@ def add_error_label(self):
     @property
     def has_focus(self):
         # When the NSTextField gets focus, a field editor is created, and that editor
-        # has the original widget as the delegate. The first responder is the Field Editor.
+        # has the original widget as the delegate. The first responder is
+        # the Field Editor.
         return (
             self.native.window is not None
             and isinstance(self.native.window.firstResponder, NSTextView)
@@ -219,7 +220,8 @@ def rehint(self):
         # Height of a text input is known and fixed.
         # Width must be > 100
         # print("REHINT TextInput", self,
-        #     self._impl.intrinsicContentSize().width, self._impl.intrinsicContentSize().height
+        #     self._impl.intrinsicContentSize().width,
+        #     self._impl.intrinsicContentSize().height
         # )
         self.interface.intrinsic.width = at_least(self.interface._MIN_WIDTH)
         self.interface.intrinsic.height = self.native.intrinsicContentSize().height

cocoa/src/toga_cocoa/widgets/tree.py

@@ -95,7 +95,8 @@ def outlineView_viewForTableColumn_item_(self, tree, column, item):
         tcv = self.makeViewWithIdentifier(identifier, owner=self)
 
         if not tcv:  # there is no existing view to reuse so create a new one
-            # tcv = TogaIconView.alloc().initWithFrame(CGRectMake(0, 0, column.width, 16))
+            # tcv = TogaIconView.alloc().initWithFrame(CGRectMake(
+            #       0, 0, column.width, 16))
             tcv = TogaIconView.alloc().init()
             tcv.identifier = identifier
 
@@ -127,7 +128,8 @@ def outlineView_viewForTableColumn_item_(self, tree, column, item):
 
     #     for column in self.tableColumns:
     #         value = getattr(
-    #             item.attrs["node"], str(column.identifier), self.interface.missing_value
+    #             item.attrs["node"], str(column.identifier),
+    #             self.interface.missing_value
     #         )
 
     #         if isinstance(value, toga.Widget):
@@ -144,7 +146,8 @@ def outlineView_pasteboardWriterForItem_(
         return None
 
     # @objc_method
-    # def outlineView_sortDescriptorsDidChange_(self, tableView, oldDescriptors) -> None:
+    # def outlineView_sortDescriptorsDidChange_(self,
+    #     tableView, oldDescriptors) -> None:
     #
     #     for descriptor in self.sortDescriptors[::-1]:
     #         accessor = descriptor.key

cocoa/src/toga_cocoa/window.py

@@ -175,7 +175,8 @@ def __init__(self, interface, title, position, size):
         self.container = Container(on_refresh=self.content_refreshed)
         self.native.contentView = self.container.native
 
-        # Ensure that the container renders it's background in the same color as the window.
+        # Ensure that the container renders it's background in the
+        # same color as the window.
         self.native.wantsLayer = True
         self.container.native.backgroundColor = self.native.backgroundColor
 

cocoa/tests_backend/probe.py

@@ -36,8 +36,8 @@ async def post_event(self, event, delay=None):
             # this prevents
             await asyncio.sleep(delay)
         else:
-            # Add another event to the queue behind the original event, to notify us once
-            # it's been processed.
+            # Add another event to the queue behind the original event, to notify us
+            # once it's been processed.
             NSRunLoop.currentRunLoop.performSelector(
                 SEL("onEvent"),
                 target=self.event_listener,

cocoa/tests_backend/widgets/base.py

@@ -149,7 +149,8 @@ async def type_character(self, char, modifierFlags=0):
         if modifierFlags:
             char = None
 
-        # This posts a single keyDown followed by a keyUp, matching "normal" keyboard operation.
+        # This posts a single keyDown followed by a keyUp, matching "normal"
+        # keyboard operation.
         await self.post_event(
             NSEvent.keyEventWithType(
                 NSEventType.KeyDown,