FlutterUndoManagerPlugin Class Reference

#import <FlutterUndoManagerPlugin.h>

Inheritance diagram for FlutterUndoManagerPlugin:

Instance Methods
(instancetype)	- NS_UNAVAILABLE
(instancetype)	- initWithDelegate:
(void)	- handleMethodCall:result:
(void)	- dealloc [implementation]
(void)	- resetUndoManager [implementation]
(void)	- registerUndoWithDirection: [implementation]
(void)	- registerRedo [implementation]
(void)	- setUndoState: [implementation]

Class Methods
(instancetype)	+ NS_UNAVAILABLE

Properties
id< FlutterUndoManagerDelegate >	undoManagerDelegate [implementation]

Detailed Description

Definition at line 13 of file FlutterUndoManagerPlugin.h.

Method Documentation

dealloc

- (void) dealloc

implementation

Definition at line 15 of file FlutterUndoManagerPlugin.mm.

                {
  [_undoManagerDelegate.undoManager removeAllActionsWithTarget:self];
}

handleMethodCall:result:

- (void) handleMethodCall:		(FlutterMethodCall*)	call
result:		(FlutterResult)	result

Definition at line 15 of file FlutterUndoManagerPlugin.mm.

                        :(FlutterMethodCall*)call result:(FlutterResult)result {
  NSString* method = call.method;
  id args = call.arguments;
  if ([method isEqualToString:kSetUndoStateMethod]) {
    [self setUndoState:args];
    result(nil);
  } else {
    result(FlutterMethodNotImplemented);
  }
}

initWithDelegate:

- (instancetype) initWithDelegate:

(id<FlutterUndoManagerDelegate>)

NS_DESIGNATED_INITIALIZER

Definition at line 15 of file FlutterUndoManagerPlugin.mm.

                                :(id<FlutterUndoManagerDelegate>)undoManagerDelegate {
  self = [super init];
 
  if (self) {
    _undoManagerDelegate = undoManagerDelegate;
  }
 
  return self;
}

NS_UNAVAILABLE [1/2]

- (instancetype) NS_UNAVAILABLE

NS_UNAVAILABLE [2/2]

+ (instancetype) NS_UNAVAILABLE

registerRedo

- (void) registerRedo

implementation

Definition at line 15 of file FlutterUndoManagerPlugin.mm.

                     {
  NSUndoManager* undoManager = self.undoManagerDelegate.undoManager;
  [undoManager beginUndoGrouping];
  [undoManager registerUndoWithTarget:self
                              handler:^(id target) {
                                // Register undo with opposite direction.
                                [target registerUndoWithDirection:FlutterUndoRedoDirectionRedo];
                              }];
  [undoManager endUndoGrouping];
  [undoManager undo];
}

registerUndoWithDirection:

- (void) registerUndoWithDirection: (FlutterUndoRedoDirection)  direction

implementation

Definition at line 15 of file FlutterUndoManagerPlugin.mm.

                                 :(FlutterUndoRedoDirection)direction {
  NSUndoManager* undoManager = self.undoManagerDelegate.undoManager;
  [undoManager beginUndoGrouping];
  [undoManager registerUndoWithTarget:self
                              handler:^(FlutterUndoManagerPlugin* target) {
                                // Register undo with opposite direction.
                                FlutterUndoRedoDirection newDirection =
                                    (direction == FlutterUndoRedoDirectionRedo)
                                        ? FlutterUndoRedoDirectionUndo
                                        : FlutterUndoRedoDirectionRedo;
                                [target registerUndoWithDirection:newDirection];
                                // Invoke method on delegate.
                                [target.undoManagerDelegate handleUndoWithDirection:direction];
                              }];
  [undoManager endUndoGrouping];
}

resetUndoManager

- (void) resetUndoManager

implementation

Definition at line 15 of file FlutterUndoManagerPlugin.mm.

                         {
  [self.undoManagerDelegate.undoManager removeAllActionsWithTarget:self];
}

setUndoState:

- (void) setUndoState: (NSDictionary*)  dictionary

implementation

Definition at line 15 of file FlutterUndoManagerPlugin.mm.

                    :(NSDictionary*)dictionary {
  NSUndoManager* undoManager = self.undoManagerDelegate.undoManager;
  BOOL groupsByEvent = undoManager.groupsByEvent;
  undoManager.groupsByEvent = NO;
  BOOL canUndo = [dictionary[kCanUndo] boolValue];
  BOOL canRedo = [dictionary[kCanRedo] boolValue];
 
  [self resetUndoManager];
 
  if (canUndo) {
    [self registerUndoWithDirection:FlutterUndoRedoDirectionUndo];
  }
  if (canRedo) {
    [self registerRedo];
  }
  UIView<UITextInput>* textInputView = self.undoManagerDelegate.activeTextInputView;
  if (textInputView != nil) {
    // This is needed to notify the iPadOS keyboard that it needs to update the
    // state of the UIBarButtons. Otherwise, the state changes to NSUndoManager
    // will not show up until the next keystroke (or other trigger).
    UITextInputAssistantItem* assistantItem = textInputView.inputAssistantItem;
    assistantItem.leadingBarButtonGroups = assistantItem.leadingBarButtonGroups;
  }
  undoManager.groupsByEvent = groupsByEvent;
}

Property Documentation

undoManagerDelegate

- (id<FlutterUndoManagerDelegate>) undoManagerDelegate

readnonatomicweakimplementation

Definition at line 15 of file FlutterUndoManagerPlugin.mm.

---

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

• shell/platform/darwin/ios/framework/Source/FlutterUndoManagerPlugin.h
• shell/platform/darwin/ios/framework/Source/FlutterUndoManagerPlugin.mm