If using the new style context, re-declare this in your class to be the
React.ContextType of your static contextType.
Should be used with type annotation or static contextType.
ReadonlypropsStatic OptionalcontextIf set, this.context will be set at runtime to the current value of the given Context.
type MyContext = number
const Ctx = React.createContext<MyContext>(0)
class Foo extends React.Component {
static contextType = Ctx
context!: React.ContextType<typeof Ctx>
render () {
return <>My context's value: {this.context}</>;
}
}
https://react.dev/reference/react/Component#static-contexttype
OptionalUNSAFE_Called immediately before mounting occurs, and before Component.render. Avoid introducing any side-effects or subscriptions in this method.
This method will not stop working in React 17.
Note: the presence of NewLifecycle.getSnapshotBeforeUpdate getSnapshotBeforeUpdate or StaticLifecycle.getDerivedStateFromProps getDerivedStateFromProps prevents this from being invoked.
OptionalUNSAFE_Called when the component may be receiving new props. React may call this even if props have not changed, so be sure to compare new and existing props if you only want to handle changes.
Calling Component.setState generally does not trigger this method.
This method will not stop working in React 17.
Note: the presence of NewLifecycle.getSnapshotBeforeUpdate getSnapshotBeforeUpdate or StaticLifecycle.getDerivedStateFromProps getDerivedStateFromProps prevents this from being invoked.
OptionalUNSAFE_Called immediately before rendering when new props or state is received. Not called for the initial render.
Note: You cannot call Component.setState here.
This method will not stop working in React 17.
Note: the presence of NewLifecycle.getSnapshotBeforeUpdate getSnapshotBeforeUpdate or StaticLifecycle.getDerivedStateFromProps getDerivedStateFromProps prevents this from being invoked.
Adds a new tab to the active tabset (if there is one)
the json for the new tab node
the added tab node or undefined
Adds a new tab to the given tabset
the id of the tabset where the new tab will be added
the json for the new tab node
the added tab node or undefined
Adds a new tab by dragging an item to the drop location, must be called from within an HTML drag start handler. You can use the setDragComponent() method to set the drag image before calling this method.
the drag start event
the json for the new tab node
OptionalonDrop: ((node?: Node, event?: DragEvent<HTMLElement>) => void)a callback to call when the drag is complete
Optionalnode: NodeOptionalevent: DragEvent<HTMLElement>OptionalcomponentOptionalcomponentOptionalcomponentCalled immediately after updating occurs. Not called for the initial render.
The snapshot is only present if getSnapshotBeforeUpdate is present and returns non-null.
Optionalsnapshot: anyOptionalcomponentCalled immediately before mounting occurs, and before Component.render. Avoid introducing any side-effects or subscriptions in this method.
Note: the presence of NewLifecycle.getSnapshotBeforeUpdate getSnapshotBeforeUpdate or StaticLifecycle.getDerivedStateFromProps getDerivedStateFromProps prevents this from being invoked.
OptionalcomponentCalled when the component may be receiving new props. React may call this even if props have not changed, so be sure to compare new and existing props if you only want to handle changes.
Calling Component.setState generally does not trigger this method.
Note: the presence of NewLifecycle.getSnapshotBeforeUpdate getSnapshotBeforeUpdate or StaticLifecycle.getDerivedStateFromProps getDerivedStateFromProps prevents this from being invoked.
OptionalcomponentOptionalcomponentCalled immediately before rendering when new props or state is received. Not called for the initial render.
Note: You cannot call Component.setState here.
Note: the presence of NewLifecycle.getSnapshotBeforeUpdate getSnapshotBeforeUpdate or StaticLifecycle.getDerivedStateFromProps getDerivedStateFromProps prevents this from being invoked.
OptionalgetRuns before React applies the result of Component.render render to the document, and returns an object to be given to componentDidUpdate. Useful for saving things such as scroll position before Component.render render causes changes to it.
Note: the presence of this method prevents any of the deprecated lifecycle events from running.
Move a tab/tabset using drag and drop, must be called from within an HTML drag start handler
the drag start event
the tab or tabset to drag
Sets the drag image from a react component for a drag event
the drag event
the react component to be used for the drag image
the x position of the drag cursor on the image
the x position of the drag cursor on the image
Optionalcallback: (() => void)OptionalshouldCalled to determine whether the change in props and state should trigger a re-render.
Component always returns true.
PureComponent implements a shallow comparison on props and state and returns true if any
props or states have changed.
If false is returned, Component.render, componentWillUpdate
and componentDidUpdate will not be called.
A React component that hosts a multi-tabbed layout