FlutterViewWrapper Class Reference

Inheritance diagram for FlutterViewWrapper:

Instance Methods
(void)	- setBackgroundColor:
(instancetype)	- initWithFlutterView:controller: [implementation]
(BOOL)	- performKeyEquivalent: [implementation]
(NSArray *)	- accessibilityChildren [implementation]
(void)	- mouseDown: [implementation]
(void)	- mouseUp: [implementation]

Detailed Description

FlutterViewWrapper is a convenience class that wraps a FlutterView and provides a mechanism to attach AppKit views such as FlutterTextField without affecting the accessibility subtree of the wrapped FlutterView itself.

The FlutterViewController uses this class to create its content view. When any of the accessibility services (e.g. VoiceOver) is turned on, the accessibility bridge creates FlutterTextFields that interact with the service. The bridge has to attach the FlutterTextField somewhere in the view hierarchy in order for the FlutterTextField to interact correctly with VoiceOver. Those FlutterTextFields will be attached to this view so that they won't affect the accessibility subtree of FlutterView.

Definition at line 154 of file FlutterViewController.mm.

Method Documentation

accessibilityChildren

- (NSArray *) accessibilityChildren

implementation

Definition at line 252 of file FlutterViewController.mm.

                                  {
  return @[ _flutterView ];
}

initWithFlutterView:controller:

- (instancetype) initWithFlutterView: (FlutterView*)  view controller: (FlutterViewController*)  controller

implementation

Definition at line 252 of file FlutterViewController.mm.

                                   :(FlutterView*)view
                         controller:(FlutterViewController*)controller {
  self = [super initWithFrame:NSZeroRect];
  if (self) {
    _flutterView = view;
    _controller = controller;
    view.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;
    [self addSubview:view];
  }
  return self;
}

mouseDown:

- (void) mouseDown: (NSEvent*)  event

implementation

Definition at line 252 of file FlutterViewController.mm.

                 :(NSEvent*)event {
  // Work around an AppKit bug where mouseDown/mouseUp are not called on the view controller if the
  // view is the content view of an NSPopover AND macOS's Reduced Transparency accessibility setting
  // is enabled.
  //
  // This simply calls mouseDown on the next responder in the responder chain as the default
  // implementation on NSResponder is documented to do.
  //
  // See: https://github.com/flutter/flutter/issues/115015
  // See: http://www.openradar.me/FB12050037
  // See: https://developer.apple.com/documentation/appkit/nsresponder/1524634-mousedown
  [self.nextResponder mouseDown:event];
}

mouseUp:

- (void) mouseUp: (NSEvent*)  event

implementation

Definition at line 252 of file FlutterViewController.mm.

               :(NSEvent*)event {
  // Work around an AppKit bug where mouseDown/mouseUp are not called on the view controller if the
  // view is the content view of an NSPopover AND macOS's Reduced Transparency accessibility setting
  // is enabled.
  //
  // This simply calls mouseUp on the next responder in the responder chain as the default
  // implementation on NSResponder is documented to do.
  //
  // See: https://github.com/flutter/flutter/issues/115015
  // See: http://www.openradar.me/FB12050037
  // See: https://developer.apple.com/documentation/appkit/nsresponder/1535349-mouseup
  [self.nextResponder mouseUp:event];
}

performKeyEquivalent:

- (BOOL) performKeyEquivalent: (NSEvent*)  event

implementation

Definition at line 252 of file FlutterViewController.mm.

                            :(NSEvent*)event {
  // Do not intercept the event if flutterView is not first responder, otherwise this would
  // interfere with TextInputPlugin, which also handles key equivalents.
  //
  // Also do not intercept the event if key equivalent is a product of an event being
  // redispatched by the TextInputPlugin, in which case it needs to bubble up so that menus
  // can handle key equivalents.
  if (self.window.firstResponder != _flutterView || [_controller isDispatchingKeyEvent:event]) {
    return [super performKeyEquivalent:event];
  }
  [_flutterView keyDown:event];
  return YES;
}

setBackgroundColor:

- (void) setBackgroundColor:

(NSColor*)

color

Definition at line 252 of file FlutterViewController.mm.

                          :(NSColor*)color {
  [_flutterView setBackgroundColor:color];
}

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The documentation for this class was generated from the following file:

• shell/platform/darwin/macos/framework/Source/FlutterViewController.mm