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Class CodeConsole

A widget containing a Jupyter console. A namespace for CodeConsole statics.

Notes

The CodeConsole class is intended to be used within a ConsolePanel instance. Under most circumstances, it is not instantiated by user code.

Hierarchy

  • Widget
    • CodeConsole

Implements

  • IMessageHandler
  • IObservableDisposable

Index

Constructors

constructor

  • Construct a console widget.

    Parameters

    • options: IOptions

    Returns CodeConsole

Properties

Private _banner

_banner: RawCell = null

Private _cells

_cells: IObservableList<Cell>

Private _content

_content: Panel

Private _drag

_drag: Drag = null

Private _dragData

_dragData: object = null

Type declaration

Private _executed

_executed: Signal<this, Date> = new Signal<this, Date>(this)

Private _focusedCell

_focusedCell: Cell = null

Private _history

_history: IConsoleHistory

Private _input

_input: Panel

Private _mimeTypeService

_mimeTypeService: IEditorMimeTypeService

Private _mimetype

_mimetype: string = "text/x-ipython"

Private _msgIdCells

_msgIdCells: Map<CodeCell, string> = new Map<CodeCell, string>()

Private _msgIds

_msgIds: Map<string, CodeCell> = new Map<string, CodeCell>()

Private _promptCellCreated

_promptCellCreated: Signal<this, CodeCell> = new Signal<this, CodeCell>(this)

contentFactory

contentFactory: IContentFactory

The content factory used by the console.

dataset

dataset: DOMStringMap

The dataset for the widget's DOM node.

disposed

disposed: ISignal<this, void>

A signal emitted when the widget is disposed.

id

id: string

Set the id of the widget's DOM node.

isAttached

isAttached: boolean

Test whether the widget's node is attached to the DOM.

isDisposed

isDisposed: boolean

Test whether the widget has been disposed.

isHidden

isHidden: boolean

Test whether the widget is explicitly hidden.

isVisible

isVisible: boolean

Test whether the widget is visible.

Notes

A widget is visible when it is attached to the DOM, is not explicitly hidden, and has no explicitly hidden ancestors.

layout

layout: Layout | null

Set the layout for the widget.

Notes

The layout is single-use only. It cannot be changed after the first assignment.

The layout is disposed automatically when the widget is disposed.

modelFactory

modelFactory: IModelFactory

The model factory for the console widget.

node

node: HTMLElement

Get the DOM node owned by the widget.

parent

parent: Widget | null

Set the parent of the widget.

Notes

Children are typically added to a widget by using a layout, which means user code will not normally set the parent widget directly.

The widget will be automatically removed from its old parent.

This is a no-op if there is no effective parent change.

rendermime

rendermime: IRenderMimeRegistry

The rendermime instance used by the console.

session

session: IClientSession

The client session used by the console.

title

title: Title<Widget>

The title object for the widget.

Notes

The title object is used by some container widgets when displaying the widget alongside some title, such as a tab panel or side bar.

Since not all widgets will use the title, it is created on demand.

The owner property of the title is set to this widget.

Static defaultContentFactory

defaultContentFactory: IContentFactory = new ContentFactory()

A default content factory for the code console.

Static defaultModelFactory

defaultModelFactory: ModelFactory = new ModelFactory({})

The default ModelFactory instance.

Accessors

cells

  • get cells(): IObservableList<Cell>
  • The list of content cells in the console.

    Notes

    This list does not include the current banner or the prompt for a console. It may include previous banners as raw cells.

    Returns IObservableList<Cell>

executed

  • get executed(): ISignal<this, Date>
  • A signal emitted when the console finished executing its prompt cell.

    Returns ISignal<this, Date>

promptCell

  • get promptCell(): CodeCell | null

promptCellCreated

  • get promptCellCreated(): ISignal<this, CodeCell>
  • A signal emitted when a new prompt cell is created.

    Returns ISignal<this, CodeCell>

Methods

Private _createCodeCellOptions

  • _createCodeCellOptions(): IOptions
  • Create the options used to initialize a code cell widget.

    Returns IOptions

Private _evtKeyDown

  • _evtKeyDown(event: KeyboardEvent): void
  • Handle the 'keydown' event for the widget.

    Parameters

    • event: KeyboardEvent

    Returns void

Private _evtMouseDown

  • _evtMouseDown(event: MouseEvent): void
  • Handle mousedown events for the widget.

    Parameters

    • event: MouseEvent

    Returns void

Private _evtMouseMove

  • _evtMouseMove(event: MouseEvent): void
  • Handle mousemove event of widget

    Parameters

    • event: MouseEvent

    Returns void

Private _evtMouseUp

  • _evtMouseUp(event: MouseEvent): void
  • Handle the 'mouseup' event for the widget.

    Parameters

    • event: MouseEvent

    Returns void

Private _execute

  • _execute(cell: CodeCell): Promise<void>
  • Execute the code in the current prompt cell.

    Parameters

    • cell: CodeCell

    Returns Promise<void>

Private _handleInfo

  • _handleInfo(info: IInfoReply | IReplyErrorContent | IReplyAbortContent): void
  • Update the console based on the kernel info.

    Parameters

    • info: IInfoReply | IReplyErrorContent | IReplyAbortContent

    Returns void

Private _onCellDisposed

  • _onCellDisposed(sender: Cell, args: void): void
  • Handle cell disposed signals.

    Parameters

    • sender: Cell
    • args: void

    Returns void

Private _onEditorKeydown

  • _onEditorKeydown(editor: IEditor, event: KeyboardEvent): boolean
  • Handle a keydown event on an editor.

    Parameters

    • editor: IEditor
    • event: KeyboardEvent

    Returns boolean

Private _onKernelChanged

  • _onKernelChanged(): void
  • Handle a change to the kernel.

    Returns void

Private _onKernelStatusChanged

  • _onKernelStatusChanged(): void
  • Handle a change to the kernel status.

    Returns void

Private _shouldExecute

  • _shouldExecute(timeout: number): Promise<boolean>
  • Test whether we should execute the prompt cell.

    Parameters

    • timeout: number

    Returns Promise<boolean>

Private _startDrag

  • _startDrag(index: number, clientX: number, clientY: number): Promise<void>
  • Start a drag event

    Parameters

    • index: number
    • clientX: number
    • clientY: number

    Returns Promise<void>

activate

  • activate(): void
  • Post an 'activate-request' message to the widget.

    Notes

    This is a simple convenience method for posting the message.

    Returns void

addBanner

  • addBanner(): void

addCell

  • addCell(cell: CodeCell, msgId?: string): void
  • Add a new cell to the content panel.

    Parameters

    • cell: CodeCell

      The code cell widget being added to the content panel.

    • Optional msgId: string

      The optional execution message id for the cell.

      Notes

      This method is meant for use by outside classes that want to add cells to a console. It is distinct from the inject method in that it requires rendered code cell widgets and does not execute them (though it can store the execution message id).

    Returns void

addClass

  • addClass(name: string): void
  • Add a class name to the widget's DOM node.

    Parameters

    • name: string

      The class name to add to the node.

      Notes

      If the class name is already added to the node, this is a no-op.

      The class name must not contain whitespace.

    Returns void

children

  • children(): IIterator<Widget>
  • Create an iterator over the widget's children.

    Returns IIterator<Widget>

    A new iterator over the children of the widget.

    Notes

    The widget must have a populated layout in order to have children.

    If a layout is not installed, the returned iterator will be empty.

clear

  • clear(): void

clearFlag

  • clearFlag(flag: Flag): void
  • Clear the given widget flag.

    Notes

    This will not typically be called directly by user code.

    Parameters

    • flag: Flag

    Returns void

close

  • close(): void
  • Send a 'close-request' message to the widget.

    Notes

    This is a simple convenience method for sending the message.

    Returns void

contains

  • contains(widget: Widget): boolean
  • Test whether a widget is a descendant of this widget.

    Parameters

    • widget: Widget

      The descendant widget of interest.

    Returns boolean

    true if the widget is a descendant, false otherwise.

createCodeCell

  • createCodeCell(): CodeCell
  • Create a new cell with the built-in factory.

    Returns CodeCell

dispose

  • dispose(): void
  • Dispose of the resources held by the widget.

    Returns void

execute

  • execute(force?: boolean, timeout?: number): Promise<void>
  • Execute the current prompt.

    Parameters

    • Default value force: boolean = false

      Whether to force execution without checking code completeness.

    • Default value timeout: number = EXECUTION_TIMEOUT

      The length of time, in milliseconds, that the execution should wait for the API to determine whether code being submitted is incomplete before attempting submission anyway. The default value is 250.

    Returns Promise<void>

fit

  • fit(): void
  • Post a 'fit-request' message to the widget.

    Notes

    This is a simple convenience method for posting the message.

    Returns void

getCell

  • getCell(msgId: string): CodeCell | undefined
  • Get a cell given a message id.

    Parameters

    • msgId: string

      The message id.

    Returns CodeCell | undefined

handleEvent

  • handleEvent(event: Event): void
  • Handle the DOM events for the widget.

    Parameters

    • event: Event

      -The DOM event sent to the widget.

      Notes

      This method implements the DOM EventListener interface and is called in response to events on the notebook panel's node. It should not be called directly by user code.

    Returns void

hasClass

  • hasClass(name: string): boolean
  • Test whether the widget's DOM node has the given class name.

    Parameters

    • name: string

      The class name of interest.

    Returns boolean

    true if the node has the class, false otherwise.

hide

  • hide(): void
  • Hide the widget and make it hidden to its parent widget.

    Notes

    This causes the isHidden property to be true.

    If the widget is explicitly hidden, this is a no-op.

    Returns void

inject

  • inject(code: string, metadata?: JSONObject): Promise<void>
  • Inject arbitrary code for the console to execute immediately.

    Parameters

    • code: string

      The code contents of the cell being injected.

    • Default value metadata: JSONObject = {}

    Returns Promise<void>

    A promise that indicates when the injected cell's execution ends.

insertLinebreak

  • insertLinebreak(): void
  • Insert a line break in the prompt cell.

    Returns void

Protected newPromptCell

  • newPromptCell(): void

Protected notifyLayout

  • notifyLayout(msg: Message): void
  • Invoke the message processing routine of the widget's layout.

    Parameters

    • msg: Message

      The message to dispatch to the layout.

      Notes

      This is a no-op if the widget does not have a layout.

      This will not typically be called directly by user code.

    Returns void

Protected onActivateRequest

  • onActivateRequest(msg: Message): void
  • Handle 'activate-request' messages.

    Parameters

    • msg: Message

    Returns void

Protected onAfterAttach

  • onAfterAttach(msg: Message): void
  • Handle after_attach messages for the widget.

    Parameters

    • msg: Message

    Returns void

Protected onAfterDetach

  • onAfterDetach(msg: Message): void
  • A message handler invoked on an 'after-detach' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: Message

    Returns void

Protected onAfterHide

  • onAfterHide(msg: Message): void
  • A message handler invoked on an 'after-hide' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: Message

    Returns void

Protected onAfterShow

  • onAfterShow(msg: Message): void
  • A message handler invoked on an 'after-show' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: Message

    Returns void

Protected onBeforeAttach

  • onBeforeAttach(msg: Message): void
  • A message handler invoked on a 'before-attach' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: Message

    Returns void

Protected onBeforeDetach

  • onBeforeDetach(msg: Message): void
  • Handle before-detach messages for the widget.

    Parameters

    • msg: Message

    Returns void

Protected onBeforeHide

  • onBeforeHide(msg: Message): void
  • A message handler invoked on a 'before-hide' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: Message

    Returns void

Protected onBeforeShow

  • onBeforeShow(msg: Message): void
  • A message handler invoked on a 'before-show' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: Message

    Returns void

Protected onChildAdded

  • onChildAdded(msg: ChildMessage): void
  • A message handler invoked on a 'child-added' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: ChildMessage

    Returns void

Protected onChildRemoved

  • onChildRemoved(msg: ChildMessage): void
  • A message handler invoked on a 'child-removed' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: ChildMessage

    Returns void

Protected onCloseRequest

  • onCloseRequest(msg: Message): void
  • A message handler invoked on a 'close-request' message.

    Notes

    The default implementation unparents or detaches the widget.

    Parameters

    • msg: Message

    Returns void

Protected onFitRequest

  • onFitRequest(msg: Message): void
  • A message handler invoked on a 'fit-request' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: Message

    Returns void

Protected onResize

  • onResize(msg: ResizeMessage): void
  • A message handler invoked on a 'resize' message.

    Notes

    The default implementation of this handler is a no-op.

    Parameters

    • msg: ResizeMessage

    Returns void

Protected onUpdateRequest

  • onUpdateRequest(msg: Message): void
  • Handle update-request messages.

    Parameters

    • msg: Message

    Returns void

processMessage

  • processMessage(msg: Message): void
  • Process a message sent to the widget.

    Parameters

    • msg: Message

      The message sent to the widget.

      Notes

      Subclasses may reimplement this method as needed.

    Returns void

removeClass

  • removeClass(name: string): void
  • Remove a class name from the widget's DOM node.

    Parameters

    • name: string

      The class name to remove from the node.

      Notes

      If the class name is not yet added to the node, this is a no-op.

      The class name must not contain whitespace.

    Returns void

serialize

  • serialize(): ICodeCell[]
  • Serialize the output.

    Notes

    This only serializes the code cells and the prompt cell if it exists, and skips any old banner cells.

    Returns ICodeCell[]

setFlag

  • setFlag(flag: Flag): void
  • Set the given widget flag.

    Notes

    This will not typically be called directly by user code.

    Parameters

    • flag: Flag

    Returns void

setHidden

  • setHidden(hidden: boolean): void
  • Show or hide the widget according to a boolean value.

    Parameters

    • hidden: boolean

      true to hide the widget, or false to show it.

      Notes

      This is a convenience method for hide() and show().

    Returns void

show

  • show(): void
  • Show the widget and make it visible to its parent widget.

    Notes

    This causes the isHidden property to be false.

    If the widget is not explicitly hidden, this is a no-op.

    Returns void

testFlag

  • testFlag(flag: Flag): boolean
  • Test whether the given widget flag is set.

    Notes

    This will not typically be called directly by user code.

    Parameters

    • flag: Flag

    Returns boolean

toggleClass

  • toggleClass(name: string, force?: boolean): boolean
  • Toggle a class name on the widget's DOM node.

    Parameters

    • name: string

      The class name to toggle on the node.

    • Optional force: boolean

      Whether to force add the class (true) or force remove the class (false). If not provided, the presence of the class will be toggled from its current state.

    Returns boolean

    true if the class is now present, false otherwise.

    Notes

    The class name must not contain whitespace.

update

  • update(): void
  • Post an 'update-request' message to the widget.

    Notes

    This is a simple convenience method for posting the message.

    Returns void

Static attach

  • attach(widget: Widget, host: HTMLElement, ref?: HTMLElement | null): void
  • Attach a widget to a host DOM node.

    Parameters

    • widget: Widget

      The widget of interest.

    • host: HTMLElement

      The DOM node to use as the widget's host.

    • Optional ref: HTMLElement | null

      The child of host to use as the reference element. If this is provided, the widget will be inserted before this node in the host. The default is null, which will cause the widget to be added as the last child of the host.

      Notes

      This will throw an error if the widget is not a root widget, if the widget is already attached, or if the host is not attached to the DOM.

    Returns void

Static detach

  • detach(widget: Widget): void
  • Detach the widget from its host DOM node.

    Parameters

    • widget: Widget

      The widget of interest.

      Notes

      This will throw an error if the widget is not a root widget, or if the widget is not attached to the DOM.

    Returns void

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