MessageListDiff class

A diffutil.ListDiffDelegate implementation for comparing lists of Message objects.

Used by diffutil_dart to calculate differences between old and new message lists for efficient updates in animated lists.

Constructors

MessageListDiff.new(List<Message> oldList, List<Message> newList)
Creates a diff delegate for comparing two message lists.

Properties

equalityChecker → bool Function(Message, Message)
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
newList → List<Message>
finalinherited
oldList → List<Message>
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

areContentsTheSame(int oldItemPosition, int newItemPosition) → bool
Checks if the content of two messages at the given positions is the same. Uses equalityChecker from freezed_annotation for deep comparison.
areItemsTheSame(int oldItemPosition, int newItemPosition) → bool
Checks if two messages at the given positions represent the same item. Compares messages based on their unique id.
getChangePayload(int oldItemPosition, int newItemPosition) → Object?
When areItemsTheSame(int, int) returns true for two items and areContentsTheSame(int, int) returns false for them, DiffUtil calls this method to get a payload about the change.
inherited
getNewItemAtIndex(int index) → Message
inherited
getNewListSize() → int
Returns the size of the new list.
inherited
getOldItemAtIndex(int index) → Message
inherited
getOldListSize() → int
Returns the size of the old list.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited