Class EdgeSegmentHandler

Graph event handler that reconnects edges and modifies control points and the edge label location. Uses CellMarker for finding and highlighting new source and target vertices. This handler is automatically created in Graph.createHandler. It extends EdgeHandler.

Constructor: mxEdgeHandler

Constructs an edge handler for the specified CellState.

Param: state

CellState of the cell to be modified.

Hierarchy (View Summary)

ElbowEdgeHandler
- EdgeSegmentHandler

Index

Constructors

constructor

Methods

addPoint addPointAt changePoints changeTerminalPoint checkLabelHandle clonePreviewState connect convertPoint createBends createCustomHandles createHandleShape createLabelHandleShape createMarker createParentHighlightShape createSelectionShape createVirtualBend createVirtualBends destroyBends drawPreview getCellAt getCurrentPoints getCursorForBend getHandleFillColor getHandleForEvent getPointForEvent getPreviewPoints getPreviewTerminalState getSelectionColor getSelectionPoints getSelectionStrokeWidth getSnapToTerminalTolerance getTooltipForNode initBend isAddPointEvent isAddVirtualBendEvent isCellEnabled isConnectableCell isCustomHandleEvent isCustomHandleVisible isDestroyed isHandleEnabled isHandleVisible isOutlineConnectEvent isParentHighlightVisible isRemovePointEvent isSelectionDashed isSnapToTerminalsEvent isVirtualBendsEnabled mouseDown mouseMove mouseUp moveLabel onDestroy redraw redrawHandles redrawInnerBends refresh removeHint removePoint reset roundLength setHandlesVisible setPreviewColor start updateHint updateParentHighlight updatePreviewState validateConnection

Constructors

constructor

new EdgeSegmentHandler(state: CellState): EdgeSegmentHandler
Parameters
- state: CellState
Returns EdgeSegmentHandler
Overrides ElbowEdgeHandler.constructor
- Defined in view/handler/EdgeSegmentHandler.ts:31

Properties

abspoints

abspoints: (null | Point)[] = []

active

active: boolean = true

allowHandleBoundsCheck

allowHandleBoundsCheck: boolean = true

Specifies if the bounds of handles should be used for hit-detection in IE.

Default

true

bends

bends: Shape[] = []

Holds the Shapes that represent the points.

cloneEnabled

cloneEnabled: boolean = true

Specifies if cloning by control-drag is enabled.

Default

true

constraintHandler

constraintHandler: ConstraintHandler

Holds the ConstraintHandler used for drawing and highlighting constraints.

currentPoint

currentPoint: null | Point = null

customHandles

customHandles: undefined | CellHandle[]

dblClickRemoveEnabled

dblClickRemoveEnabled: boolean = false

Specifies if removing bends by double click is enabled.

Default

false

doubleClickOrientationResource

doubleClickOrientationResource: string = ...

Specifies the resource key for the tooltip to be displayed on the single control point for routed edges. If the resource for this key does not exist then the value is used as the error message.

Default

'doubleClickOrientation'.

error

error: null | string = null

Holds the current validation error while a connection is being changed.

escapeHandler

escapeHandler: (sender: Listenable, evt: Event) => void

flipEnabled

flipEnabled: boolean = true

Specifies if a double click on the middle handle should call Graph#flipEdge.

Default

true

graph

graph: Graph

Reference to the enclosing Graph.

handleImage

handleImage: null | ImageBox = null

Optional Image to be used as handles.

Default

null

index

index: null | number = null

isLabel

isLabel: boolean = false

isSource

isSource: boolean = false

isTarget

isTarget: boolean = false

label

label: Point

labelHandleImage

labelHandleImage: null | ImageBox = null

labelShape

labelShape: Shape

Holds the Shape that represents the label position.

manageLabelHandle

manageLabelHandle: boolean = false

Specifies if the label handle should be moved if it intersects with another handle. Uses checkLabelHandle for checking and moving.

Default

false

marker

marker: CellMarker

Holds the CellMarker which is used for highlighting terminals.

mergeRemoveEnabled

mergeRemoveEnabled: boolean = false

Specifies if removing bends by dropping them on other bends is enabled.

Default

false

outline

outline: boolean = true

outlineConnect

outlineConnect: boolean = false

Specifies if connections to the outline of a highlighted target should be enabled. This will allow to place the connection point along the outline of the highlighted target.

Default

false

parentHighlight

parentHighlight: null | RectangleShape = null

parentHighlightEnabled

parentHighlightEnabled: boolean = false

Specifies if the parent should be highlighted if a child cell is selected.

Default

false

points

points: Point[] = []

preferHtml

preferHtml: boolean = false

Specifies if bends should be added to the graph container. This is updated in constructor based on whether the edge or one of its terminals has an HTML label in the container.

shape

shape: Shape

Holds the Shape that represents the preview edge.

snapPoint

snapPoint: null | Point = null

snapToTerminals

snapToTerminals: boolean = false

Specifies if waypoints should snap to the routing centers of terminals.

Default

false

startX

startX: number = 0

startY

startY: number = 0

state

state: CellState

Reference to the CellState being modified.

straightRemoveEnabled

straightRemoveEnabled: boolean = false

Specifies if removing bends by creating straight segments should be enabled. If enabled, this can be overridden by holding down the alt key while moving.

Default

false

tolerance

tolerance: number = 0

Optional tolerance for hit-detection in getHandleForEvent.

Default

virtualBends

virtualBends: undefined | Shape[]

Methods

addPoint

addPoint(state: CellState, evt: MouseEvent): void
Adds a control point for the given state and event.
Parameters
- state: CellState
- evt: MouseEvent
Returns void
Inherited from ElbowEdgeHandler.addPoint
- Defined in view/handler/EdgeHandler.ts:1777

addPointAt

addPointAt(state: CellState, x: number, y: number): void
Adds a control point at the given point.
Parameters
- state: CellState
- x: number
- y: number
Returns void
Inherited from ElbowEdgeHandler.addPointAt
- Defined in view/handler/EdgeHandler.ts:1788

changePoints

changePoints(edge: Cell, points: Point[], clone: boolean): Cell
Changes the control points of the given edge in the graph model.
Parameters
- edge: Cell
- points: Point[]
- clone: boolean
Returns Cell
Inherited from ElbowEdgeHandler.changePoints
- Defined in view/handler/EdgeHandler.ts:1748

changeTerminalPoint

changeTerminalPoint(
    edge: Cell,
    point: Point,
    isSource: boolean,
    clone: boolean,
): Cell
Changes the terminal point of the given edge.
Parameters
- edge: Cell
- point: Point
- isSource: boolean
- clone: boolean
Returns Cell
Inherited from ElbowEdgeHandler.changeTerminalPoint
- Defined in view/handler/EdgeHandler.ts:1720

checkLabelHandle

checkLabelHandle(b: Rectangle): void
Checks if the label handle intersects the given bounds and moves it if it intersects.
Parameters
- b: Rectangle
Returns void
Inherited from ElbowEdgeHandler.checkLabelHandle
- Defined in view/handler/EdgeHandler.ts:2092

clonePreviewState

clonePreviewState(point: Point, terminal: null | Cell): CellState
Returns a clone of the current preview state for the given point and terminal.
Parameters
- point: Point
- terminal: null | Cell
Returns CellState
Inherited from ElbowEdgeHandler.clonePreviewState
- Defined in view/handler/EdgeHandler.ts:868

connect

connect(
    edge: Cell,
    terminal: Cell,
    isSource: boolean,
    isClone: boolean,
    me: InternalMouseEvent,
): Cell
Overriden to merge edge segments.
Parameters
- edge: Cell
- terminal: Cell
- isSource: boolean
- isClone: boolean
- me: InternalMouseEvent
Returns Cell
Overrides ElbowEdgeHandler.connect
- Defined in view/handler/EdgeSegmentHandler.ts:225

convertPoint

convertPoint(point: Point, gridEnabled: boolean): Point
Converts the given point in-place from screen to unscaled, untranslated graph coordinates and applies the grid.
Parameters
- point: Point
  Point to be converted.
- gridEnabled: boolean
  Boolean that specifies if the grid should be applied.
Returns Point
Inherited from ElbowEdgeHandler.convertPoint
- Defined in view/handler/ElbowEdgeHandler.ts:148

createBends

createBends(): Shape[]
Adds custom bends for the center of each segment.

Returns Shape[]
Overrides ElbowEdgeHandler.createBends
- Defined in view/handler/EdgeSegmentHandler.ts:305

createCustomHandles

createCustomHandles(): CellHandle[]
Returns an array of custom handles. This implementation returns an empty array.

Returns CellHandle[]
Inherited from ElbowEdgeHandler.createCustomHandles
- Defined in view/handler/EdgeHandler.ts:382

createHandleShape

createHandleShape(_index?: number): Shape
Creates the shape used to display the given bend. Note that the index
- may be null for special cases, such as when called from ElbowEdgeHandler.createVirtualBend.
- is null for virtual handles.
Only images and rectangles should be returned if support for HTML labels with not foreign objects is required.
Parameters
- Optional_index: number
Returns Shape
Inherited from ElbowEdgeHandler.createHandleShape
- Defined in view/handler/EdgeHandler.ts:615

createLabelHandleShape

createLabelHandleShape(): RectangleShape
Creates the shape used to display the label handle.

Returns RectangleShape
Inherited from ElbowEdgeHandler.createLabelHandleShape
- Defined in view/handler/EdgeHandler.ts:645

createMarker

createMarker(): EdgeHandlerCellMarker
Creates and returns the CellMarker used in marker.

Returns EdgeHandlerCellMarker
Inherited from ElbowEdgeHandler.createMarker
- Defined in view/handler/EdgeHandler.ts:503

createParentHighlightShape

createParentHighlightShape(bounds: Rectangle): RectangleShape
Creates the shape used to draw the selection border.
Parameters
- bounds: Rectangle
Returns RectangleShape
Inherited from ElbowEdgeHandler.createParentHighlightShape
- Defined in view/handler/EdgeHandler.ts:435

createSelectionShape

createSelectionShape(points: (null | Point)[]): Shape
Creates the shape used to draw the selection border.
Parameters
- points: (null | Point)[]
Returns Shape
Inherited from ElbowEdgeHandler.createSelectionShape
- Defined in view/handler/EdgeHandler.ts:450

createVirtualBend

createVirtualBend(dblClickHandler?: (evt: MouseEvent) => void): Shape
Creates a virtual bend that supports double-clicking and calls Graph#flipEdge.
Parameters
- OptionaldblClickHandler: (evt: MouseEvent) => void
Returns Shape
Inherited from ElbowEdgeHandler.createVirtualBend
- Defined in view/handler/ElbowEdgeHandler.ts:99

createVirtualBends

createVirtualBends(): Shape[]
Creates and returns the bends used for modifying the edge. This is typically an array of RectangleShape.

Returns Shape[]
Inherited from ElbowEdgeHandler.createVirtualBends
- Defined in view/handler/EdgeHandler.ts:564

destroyBends

destroyBends(bends: Shape[] | CellHandle[]): void
Destroys all elements in bends.
Parameters
- bends: Shape[] | CellHandle[]
Returns void
Inherited from ElbowEdgeHandler.destroyBends
- Defined in view/handler/EdgeHandler.ts:2184

drawPreview

drawPreview(): void
Redraws the preview.

Returns void
Inherited from ElbowEdgeHandler.drawPreview
- Defined in view/handler/EdgeHandler.ts:2107

getCellAt

getCellAt(x: number, y: number): null | Cell
Creates and returns the CellMarker used in marker.
Parameters
- x: number
- y: number
Returns null | Cell
Inherited from ElbowEdgeHandler.getCellAt
- Defined in view/handler/EdgeHandler.ts:496

getCurrentPoints

getCurrentPoints(): (null | Point)[]
Returns the current absolute points.

Returns (null | Point)[]
- Defined in view/handler/EdgeSegmentHandler.ts:40

getCursorForBend

getCursorForBend(): "row-resize" | "col-resize"
Returns the cursor to be used for the bend.

Returns "row-resize" | "col-resize"
Inherited from ElbowEdgeHandler.getCursorForBend
- Defined in view/handler/ElbowEdgeHandler.ts:115

getHandleFillColor

getHandleFillColor(index: number): string
Returns the fillcolor for the handle at the given index.
Parameters
- index: number
Returns string
Inherited from ElbowEdgeHandler.getHandleFillColor
- Defined in view/handler/EdgeHandler.ts:1840

getHandleForEvent

getHandleForEvent(me: InternalMouseEvent): null | number
Returns the index of the handle for the given event.
Parameters
- me: InternalMouseEvent
Returns null | number
Inherited from ElbowEdgeHandler.getHandleForEvent
- Defined in view/handler/EdgeHandler.ts:698

getPointForEvent

getPointForEvent(me: InternalMouseEvent): Point
Returns the point for the given event.
Parameters
- me: InternalMouseEvent
Returns Point
Inherited from ElbowEdgeHandler.getPointForEvent
- Defined in view/handler/EdgeHandler.ts:912

getPreviewPoints

getPreviewPoints(point: Point): null | Point[]
Updates the given preview state taking into account the state of the constraint handler.
Parameters
- point: Point
Returns null | Point[]
Overrides ElbowEdgeHandler.getPreviewPoints
- Defined in view/handler/EdgeSegmentHandler.ts:67

getPreviewTerminalState

getPreviewTerminalState(me: InternalMouseEvent): null | CellState
Updates the given preview state taking into account the state of the constraint handler.
Parameters
- me: InternalMouseEvent
Returns null | CellState
Inherited from ElbowEdgeHandler.getPreviewTerminalState
- Defined in view/handler/EdgeHandler.ts:974

getSelectionColor

getSelectionColor(): string
Returns EdgeHandlerConfig.selectionColor.

Returns string
Inherited from ElbowEdgeHandler.getSelectionColor
- Defined in view/handler/EdgeHandler.ts:467

getSelectionPoints

getSelectionPoints(state: CellState): (null | Point)[]
Returns the list of points that defines the selection stroke.
Parameters
- state: CellState
Returns (null | Point)[]
Inherited from ElbowEdgeHandler.getSelectionPoints
- Defined in view/handler/EdgeHandler.ts:428

getSelectionStrokeWidth

getSelectionStrokeWidth(): number
Returns EdgeHandlerConfig.selectionStrokeWidth.

Returns number
Inherited from ElbowEdgeHandler.getSelectionStrokeWidth
- Defined in view/handler/EdgeHandler.ts:474

getSnapToTerminalTolerance

getSnapToTerminalTolerance(): number
Returns the tolerance for the guides. Default value is gridSize * scale / 2.

Returns number
Inherited from ElbowEdgeHandler.getSnapToTerminalTolerance
- Defined in view/handler/EdgeHandler.ts:876

getTooltipForNode

getTooltipForNode(node: Element): null | string
Returns no tooltips.
Parameters
- node: Element
Returns null | string
Overrides ElbowEdgeHandler.getTooltipForNode
- Defined in view/handler/EdgeSegmentHandler.ts:282

initBend

initBend(bend: Shape, dblClick?: (evt: MouseEvent) => void): void
Helper method to initialize the given bend.
Parameters
- bend: Shape
  Shape that represents the bend to be initialized.
- OptionaldblClick: (evt: MouseEvent) => void
  Optional function to be called on double click.
Returns void
Inherited from ElbowEdgeHandler.initBend
- Defined in view/handler/EdgeHandler.ts:671

isAddPointEvent

isAddPointEvent(evt: MouseEvent): boolean
Returns true if the given event is a trigger to add a new Point. This implementation returns true if shift is pressed.
Parameters
- evt: MouseEvent
Returns boolean
Inherited from ElbowEdgeHandler.isAddPointEvent
- Defined in view/handler/EdgeHandler.ts:413

isAddVirtualBendEvent

isAddVirtualBendEvent(me: InternalMouseEvent): boolean
Returns true if the given event allows virtual bends to be added. This implementation returns true.
Parameters
- me: InternalMouseEvent
Returns boolean
Inherited from ElbowEdgeHandler.isAddVirtualBendEvent
- Defined in view/handler/EdgeHandler.ts:768

isCellEnabled

isCellEnabled(cell: Cell): boolean
Returns true if the given cell allows new connections to be created. This implementation always returns true.
Parameters
- cell: Cell
Returns boolean
Inherited from ElbowEdgeHandler.isCellEnabled
- Defined in view/handler/EdgeHandler.ts:405

isConnectableCell

isConnectableCell(cell: Cell): boolean
Returns true if the given cell is connectable. This is a hook to disable floating connections. This implementation returns true.
Parameters
- cell: Cell
Returns boolean
Inherited from ElbowEdgeHandler.isConnectableCell
- Defined in view/handler/EdgeHandler.ts:489

isCustomHandleEvent

isCustomHandleEvent(me: InternalMouseEvent): boolean
Returns true if the given event allows custom handles to be changed. This implementation returns true.
Parameters
- me: InternalMouseEvent
Returns boolean
Inherited from ElbowEdgeHandler.isCustomHandleEvent
- Defined in view/handler/EdgeHandler.ts:776

isCustomHandleVisible

isCustomHandleVisible(handle: CellHandle): boolean
Returns true if the given custom handle is visible.
Parameters
- handle: CellHandle
Returns boolean
Inherited from ElbowEdgeHandler.isCustomHandleVisible
- Defined in view/handler/EdgeHandler.ts:2011

isDestroyed

isDestroyed(): boolean
Returns true if destroy was called.

Returns boolean
Inherited from ElbowEdgeHandler.isDestroyed
- Defined in view/handler/EdgeHandler.ts:2177

isHandleEnabled

isHandleEnabled(index: number): boolean
Creates the shape used to display the given bend.
Parameters
- index: number
Returns boolean
Inherited from ElbowEdgeHandler.isHandleEnabled
- Defined in view/handler/EdgeHandler.ts:585

isHandleVisible

isHandleVisible(index: number): boolean
Returns true if the handle at the given index is visible.
Parameters
- index: number
Returns boolean
Inherited from ElbowEdgeHandler.isHandleVisible
- Defined in view/handler/EdgeHandler.ts:592

isOutlineConnectEvent

isOutlineConnectEvent(me: InternalMouseEvent): boolean
Returns true if outlineConnect is true and the source of the event is the outline shape or shift is pressed.
Parameters
- me: InternalMouseEvent
Returns boolean
Inherited from ElbowEdgeHandler.isOutlineConnectEvent
- Defined in view/handler/EdgeHandler.ts:1155

isParentHighlightVisible

isParentHighlightVisible(): null | boolean
Returns true if the parent highlight should be visible. This implementation always returns true.

Returns null | boolean
Inherited from ElbowEdgeHandler.isParentHighlightVisible
- Defined in view/handler/EdgeHandler.ts:323

isRemovePointEvent

isRemovePointEvent(evt: MouseEvent): boolean
Returns true if the given event is a trigger to remove a point. This implementation returns true if shift is pressed.
Parameters
- evt: MouseEvent
Returns boolean
Inherited from ElbowEdgeHandler.isRemovePointEvent
- Defined in view/handler/EdgeHandler.ts:421

isSelectionDashed

isSelectionDashed(): boolean
Returns EdgeHandlerConfig.selectionDashed.

Returns boolean
Inherited from ElbowEdgeHandler.isSelectionDashed
- Defined in view/handler/EdgeHandler.ts:481

isSnapToTerminalsEvent

isSnapToTerminalsEvent(me: InternalMouseEvent): boolean
Returns true if snapToTerminals is true and if alt is not pressed.
Parameters
- me: InternalMouseEvent
Returns boolean
Inherited from ElbowEdgeHandler.isSnapToTerminalsEvent
- Defined in view/handler/EdgeHandler.ts:905

isVirtualBendsEnabled

isVirtualBendsEnabled(evt?: Event): undefined | boolean
Returns true if virtual bends should be added. This returns true if virtualBendsEnabled is true and the current style allows and renders custom waypoints.
Parameters
- Optionalevt: Event
Returns undefined | boolean
Inherited from ElbowEdgeHandler.isVirtualBendsEnabled
- Defined in view/handler/EdgeHandler.ts:391

mouseDown

mouseDown(sender: EventSource, me: InternalMouseEvent): void
Handles the event by checking if a special element of the handler was clicked, in which case the index parameter is non-null. The indices may be one of InternalEvent.LABEL_HANDLE or the number of the respective control point. The source and target points are used for reconnecting the edge.
Parameters
- sender: EventSource
- me: InternalMouseEvent
Returns void
Inherited from ElbowEdgeHandler.mouseDown
- Defined in view/handler/EdgeHandler.ts:787

mouseMove

mouseMove(sender: EventSource, me: InternalMouseEvent): void
Handles the event by updating the preview.
Parameters
- sender: EventSource
- me: InternalMouseEvent
Returns void
Inherited from ElbowEdgeHandler.mouseMove
- Defined in view/handler/EdgeHandler.ts:1311

mouseUp

mouseUp(sender: EventSource, me: InternalMouseEvent): void
Handles the event to applying the previewed changes on the edge by using moveLabel, connect or changePoints.
Parameters
- sender: EventSource
- me: InternalMouseEvent
Returns void
Inherited from ElbowEdgeHandler.mouseUp
- Defined in view/handler/EdgeHandler.ts:1419

moveLabel

moveLabel(edgeState: CellState, x: number, y: number): void
Changes the coordinates for the label of the given edge.
Parameters
- edgeState: CellState
- x: number
  Integer that specifies the x-coordinate of the new location.
- y: number
  Integer that specifies the y-coordinate of the new location.
Returns void
Inherited from ElbowEdgeHandler.moveLabel
- Defined in view/handler/EdgeHandler.ts:1642

onDestroy

onDestroy(): void
Destroys the handler and all its resources and DOM nodes. This does normally not need to be called as handlers are destroyed automatically when the corresponding cell is deselected.

Returns void
Inherited from ElbowEdgeHandler.onDestroy
- Defined in view/handler/EdgeHandler.ts:2199

redraw

redraw(): void
Overridden to invoke before the redraw.

Returns void
Overrides ElbowEdgeHandler.redraw
- Defined in view/handler/EdgeSegmentHandler.ts:349

redrawHandles

redrawHandles(): void
Redraws the handles.

Returns void
Inherited from ElbowEdgeHandler.redrawHandles
- Defined in view/handler/EdgeHandler.ts:1896

redrawInnerBends

redrawInnerBends(p0: Point, pe: Point): void
Updates the position of the custom bends.
Parameters
- p0: Point
- pe: Point
Returns void
Overrides ElbowEdgeHandler.redrawInnerBends
- Defined in view/handler/EdgeSegmentHandler.ts:357

refresh

refresh(): void
Refreshes the bends of this handler.

Returns void
Inherited from ElbowEdgeHandler.refresh
- Defined in view/handler/EdgeHandler.ts:2145

removeHint

removeHint(): void
Hooks for subclassers to hide details when the handler gets inactive.

Returns void
Inherited from ElbowEdgeHandler.removeHint
- Defined in view/handler/EdgeHandler.ts:891

removePoint

removePoint(state: CellState, index: number): void
Removes the control point at the given index from the given state.
Parameters
- state: CellState
- index: number
Returns void
Inherited from ElbowEdgeHandler.removePoint
- Defined in view/handler/EdgeHandler.ts:1823

reset

reset(): void
Resets the state of this handler.

Returns void
Inherited from ElbowEdgeHandler.reset
- Defined in view/handler/EdgeHandler.ts:1566

roundLength

roundLength(length: number): number
Hook for rounding the unscaled width or height. This uses Math.round.
Parameters
- length: number
Returns number
Inherited from ElbowEdgeHandler.roundLength
- Defined in view/handler/EdgeHandler.ts:898

setHandlesVisible

setHandlesVisible(visible: boolean): void
Shortcut to hideSizers.
Parameters
- visible: boolean
Returns void
Inherited from ElbowEdgeHandler.setHandlesVisible
- Defined in view/handler/EdgeHandler.ts:2018

setPreviewColor

setPreviewColor(color: string): void
Sets the color of the preview to the given value.
Parameters
- color: string
Returns void
Inherited from ElbowEdgeHandler.setPreviewColor
- Defined in view/handler/EdgeHandler.ts:1600

start

start(x: number, y: number, index: number): void
Adds custom bends for the center of each segment.
Parameters
- x: number
- y: number
- index: number
Returns void
Overrides ElbowEdgeHandler.start
- Defined in view/handler/EdgeSegmentHandler.ts:289

updateHint

updateHint(me: InternalMouseEvent, point: Point): void
Hook for subclassers do show details while the handler is active.
Parameters
- me: InternalMouseEvent
- point: Point
Returns void
Inherited from ElbowEdgeHandler.updateHint
- Defined in view/handler/EdgeHandler.ts:884

updateParentHighlight

updateParentHighlight(): void
Updates the highlight of the parent if parentHighlightEnabled is true.

Returns void
Inherited from ElbowEdgeHandler.updateParentHighlight
- Defined in view/handler/EdgeHandler.ts:331

updatePreviewState

updatePreviewState(
    edge: CellState,
    point: Point,
    terminalState: CellState,
    me: InternalMouseEvent,
): void
Overridden to perform optimization of the edge style result.
Parameters
- edge: CellState
- point: Point
- terminalState: CellState
- me: InternalMouseEvent
Returns void
Overrides ElbowEdgeHandler.updatePreviewState
- Defined in view/handler/EdgeSegmentHandler.ts:122

validateConnection

validateConnection(source: null | Cell, target: null | Cell): null | string
Returns the error message or an empty string if the connection for the given source, target pair is not valid. Otherwise, it returns null. This implementation uses Graph#getEdgeValidationError.
Parameters
- source: null | Cell
  Cell that represents the source terminal.
- target: null | Cell
  Cell that represents the target terminal.
Returns null | string
Inherited from ElbowEdgeHandler.validateConnection
- Defined in view/handler/EdgeHandler.ts:515

Class EdgeSegmentHandler

Param: state

Hierarchy (View Summary)

Index

Constructors

Properties

Methods

Constructors

constructor

Parameters

Returns EdgeSegmentHandler

Properties

abspoints

active

allowHandleBoundsCheck

Default

bends

cloneEnabled

Default

constraintHandler

currentPoint

customHandles

dblClickRemoveEnabled

Default

doubleClickOrientationResource

Default

error

escapeHandler

flipEnabled

Default

graph

handleImage

Default

index

isLabel

isSource

isTarget

label

labelHandleImage

labelShape

manageLabelHandle

Default

marker

mergeRemoveEnabled

Default

outline

outlineConnect

Default

parentHighlight

parentHighlightEnabled

Default

points

preferHtml

shape

snapPoint

snapToTerminals

Default

startX

startY

state

straightRemoveEnabled

Default

tolerance

Default

virtualBends

Methods

addPoint

Parameters

Returns void

addPointAt

Parameters

Returns void

changePoints

Parameters

Returns Cell

changeTerminalPoint

Parameters

Returns Cell

checkLabelHandle

Parameters