Operation class Null safety

Operation performed on a rich-text document.

Constructors

Operation.delete(int length)
Creates operation which deletes length of characters.
factory
Operation.insert(dynamic data, [Map<String, dynamic>? attributes])
Creates operation which inserts text with optional attributes.
factory
Operation.retain(int? length, [Map<String, dynamic>? attributes])
Creates operation which retains length of characters and optionally applies attributes.
factory

Properties

attributes → Map<String, dynamic>?
Rich-text attributes set by this operation, can be null.
read-only
data → Object?
Payload of "insert" operation, for other types is set to empty string.
final
hashCode → int
The hash code for this object. [...]
read-only, override
isDelete → bool
Returns true if this is a delete operation.
read-only
isEmpty → bool
Returns true is this operation is empty. [...]
read-only
isInsert → bool
Returns true if this is an insert operation.
read-only
isNotEmpty → bool
Returns true is this operation is not empty.
read-only
isNotPlain → bool
Returns true if this operation sets at least one attribute.
read-only
isPlain → bool
Returns true if this operation has no attributes, e.g. is plain text.
read-only
isRetain → bool
Returns true if this is a retain operation.
read-only
key → String
Key of this operation, can be "insert", "delete" or "retain".
final
length → int?
Length of this operation.
final
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited
value → dynamic
Returns value of this operation. [...]
read-only

Methods

hasAttribute(String name) → bool
Returns true if this operation has attribute specified by name.
hasSameAttributes(Operation other) → bool
Returns true if other operation has the same attributes as this one.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toJson() → Map<String, dynamic>
Returns JSON-serializable representation of this operation.
toString() → String
A string representation of this object. [...]
override

Operators

operator ==(Object other) → bool
The equality operator. [...]
override

Static Methods

fromJson(Map data, {DataDecoder? dataDecoder}) → Operation
Creates new Operation from JSON payload. [...]

Constants

attributesKey → const String
Key of attributes collection.
'attributes'
deleteKey → const String
Key of delete operations.
'delete'
insertKey → const String
Key of insert operations.
'insert'
retainKey → const String
Key of retain operations.
'retain'