ChannelDelta class

One difference, on whichever channel found it.

The union of what PixelChannel, TreeChannel, TextChannel and EventChannel each report, in one shape carrying the facets a reader selects on. half is not among them: a delta belongs to an item, and the item already knows which half it is in.

Nothing computes from this — it is a projection of the channels, built by ComparedItem.deltas and thrown away. The channels stay the record.

Constructors

ChannelDelta({required String channel, String? subchannel, String? subject, String? property, String? base, String? head, String? origin})

const

Properties

base → String?

final

channel → String

pixels, tree, texts or events.

final

hashCode → int

The hash code for this object.

no setter, inherited

head → String?

final

origin → String?

Where the app made the event, for an event that said. Never a fact about the difference; a fact about where to go and look.

final

property → String?

Which field moved — size, detail, data.cart.id — or, where nothing moved but something arrived or left, added, removed or moved.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

subchannel → String?

For an event, the channel it travelled on — network, db, log, system. Null on every other channel.

final

subject → String?

What the difference is about: a widget's path through the tree, or an event's own one-line summary. Null where the property says it all.

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, Object?>

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

fromJson(Map<String, Object?> json) → ChannelDelta