ThreadHeader class
It shows the current thread information.
class ThreadPage extends StatelessWidget {
final Message parent;
ThreadPage({
Key key,
this.parent,
}) : super(key: key);
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: ThreadHeader(
parent: parent,
),
body: Column(
children: <Widget>[
Expanded(
child: MessageListView(
parentMessage: parent,
),
),
MessageInput(
parentMessage: parent,
),
],
),
);
}
}
Usually you would use this widget as an AppBar
inside a Scaffold
.
However you can also use it as a normal widget.
Make sure to have a StreamChannel ancestor in order to provide the information about the channel.
Every part of the widget uses a StreamBuilder
to render the channel information as soon as it updates.
By default the widget shows a backButton that calls Navigator.pop
.
You can disable this button using the showBackButton property of just override the behaviour
with onBackPressed.
The widget components render the ui based on the first ancestor of type StreamChatTheme and on its ChannelTheme.channelHeaderTheme property. Modify it to change the widget appearance.
Constructors
- ThreadHeader({Key key, @required Message parent, bool showBackButton = true, VoidCallback onBackPressed})
- Instantiate a new ThreadHeader
Properties
- hashCode → int
-
The hash code for this object. [...]
@nonVirtual, read-only, inherited
- key → Key
-
Controls how one widget replaces another widget in the tree. [...]
final, inherited
- onBackPressed → VoidCallback
-
Callback to call when pressing the back button.
By default it calls
Navigator.pop
final - parent → Message
-
The message parent of this thread
final
- preferredSize → Size
-
The size this widget would prefer if it were otherwise unconstrained. [...]
final
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
- showBackButton → bool
-
True if this header shows the leading back button
final
Methods
-
build(
BuildContext context) → Widget - Describes the part of the user interface represented by this widget. [...]
-
createElement(
) → StatelessElement -
Creates a
StatelessElement
to manage this widget's location in the tree. [...]inherited -
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of
DiagnosticsNode
objects describing this node's children. [...]@protected, inherited -
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node. [...]
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
toDiagnosticsNode(
{String name, DiagnosticsTreeStyle style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by
DiagnosticsNode.toStringDeep
. [...]inherited -
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
Returns a string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a string representation of this node and its descendants. [...]
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object. [...]
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator. [...]
@nonVirtual, inherited