Class: RenderedConnection

Constructor

RenderedConnection

new RenderedConnection(source, type)

Class for a connection between blocks that may be rendered on screen.

Parameter
source	Blockly.Block The block establishing this connection. Value must not be null.
type	number The type of the connection.

Parameter

source

Blockly.Block

The block establishing this connection.

Value must not be null.

type

number

The type of the connection.

Extends: Blockly.Connection

Properties

db_

protected

unknown

Connection database for connections of this type on the current workspace.

Inherited from: Blockly.Connection#db_

dbOpposite_

protected

unknown

Connection database for connections compatible with this type on the current workspace.

Inherited from: Blockly.Connection#dbOpposite_

hidden_

protected

unknown

Whether this connections is hidden (not tracked in a database) or not.

Inherited from: Blockly.Connection#hidden_

inDB_

protected

unknown

Has this connection been added to the connection database?

Inherited from: Blockly.Connection#inDB_

sourceBlock_

protected

unknown

Inherited from: Blockly.Connection#sourceBlock_

targetConnection

unknown

Connection this connection connects to. Null if not connected.

Inherited from: Blockly.Connection#targetConnection

type

unknown

Inherited from: Blockly.Connection#type

x_

protected

unknown

Horizontal location of this connection.

Inherited from: Blockly.Connection#x_

y_

protected

unknown

Vertical location of this connection.

Inherited from: Blockly.Connection#y_

Methods

checkType_

protected

checkType_(otherConnection) returns boolean

Is this connection compatible with another connection with respect to the value type system. E.g. square_root("Hello") is not compatible.

Parameter
otherConnection	Connection to compare against. Value must not be null.

Parameter

otherConnection

Connection to compare against.

Value must not be null.

Inherited from: Blockly.Connection#checkType_
Returns: True if the connections share a type.

closest

closest(maxLimit, dxy) returns Object

Find the closest compatible connection to this connection. All parameters are in workspace units.

Parameter
maxLimit	number The maximum radius to another connection.
dxy	goog.math.Coordinate Offset between this connection's location in the database and the current location (as a result of dragging). Value must not be null.

Parameter

maxLimit

number

The maximum radius to another connection.

dxy

goog.math.Coordinate

Offset between this connection's location in the database and the current location (as a result of dragging).

Value must not be null.

Returns: non-null {connection: nullable Blockly.Connection, radius: number} Contains two properties: 'connection' which is either another connection or null, and 'radius' which is the distance.

connect

connect(otherConnection)

Connect this connection to another connection.

Parameter
otherConnection	Connection to connect to. Value must not be null.

Parameter

otherConnection

Connection to connect to.

Value must not be null.

Inherited from: Blockly.Connection#connect

disconnect

disconnect()

Disconnect this connection.

Inherited from: Blockly.Connection#disconnect

dispose

dispose()

Sever all links to this connection (not including from the source object).

Inherited from: Blockly.Connection#dispose

distanceFrom

distanceFrom(otherConnection) returns number

Returns the distance between this connection and another connection in workspace units.

Parameter
otherConnection	Blockly.Connection The other connection to measure the distance to. Value must not be null.

Parameter

otherConnection

Blockly.Connection

The other connection to measure the distance to.

Value must not be null.

Returns: number The distance between connections, in workspace units.

getCheck

public

getCheck() returns Array

Get a connection's compatibility.

Inherited from: Blockly.Connection#getCheck
Returns: List of compatible value types. Null if all types are compatible.

getShadowDom

getShadowDom() returns Element

Return a connection's shadow block.

Inherited from: Blockly.Connection#getShadowDom
Returns: shadow DOM representation of a block or null.

getSourceBlock

getSourceBlock() returns Blockly.Block

Get the source block for this connection.

Inherited from: Blockly.Connection#getSourceBlock
Returns: The source block, or null if there is none.

hideAll

hideAll()

Hide this connection, as well as all down-stream connections on any block attached to this connection. This happens when a block is collapsed. Also hides down-stream comments.

highlight

highlight()

Add highlighting around this connection.

isConnected

isConnected() returns boolean

Is the connection connected?

Inherited from: Blockly.Connection#isConnected
Returns: True if connection is connected to another connection.

isConnectionAllowed

isConnectionAllowed(candidate, maxRadius) returns boolean

Check if the two connections can be dragged to connect to each other.

Parameter
candidate	Blockly.Connection A nearby connection to check. Value must not be null.
maxRadius	number The maximum radius allowed for connections, in workspace units.

Parameter

candidate

Blockly.Connection

A nearby connection to check.

Value must not be null.

maxRadius

number

The maximum radius allowed for connections, in workspace units.

Returns: boolean True if the connection is allowed, false otherwise.

isSuperior

isSuperior() returns boolean

Does the connection belong to a superior block (higher in the source stack)?

Inherited from: Blockly.Connection#isSuperior
Returns: True if connection faces down or right.

moveBy

moveBy(dx, dy)

Change the connection's coordinates.

Parameter
dx	number Change to x coordinate, in workspace units.
dy	number Change to y coordinate, in workspace units.

Parameter

number

Change to x coordinate, in workspace units.

number

Change to y coordinate, in workspace units.

moveTo

moveTo(x, y)

Change the connection's coordinates.

Parameter
x	number New absolute x coordinate, in workspace coordinates.
y	number New absolute y coordinate, in workspace coordinates.

Parameter

number

New absolute x coordinate, in workspace coordinates.

number

New absolute y coordinate, in workspace coordinates.

moveToOffset

moveToOffset(blockTL)

Move this connection to the location given by its offset within the block and the location of the block's top left corner.

Parameter
blockTL	goog.math.Coordinate The location of the top left corner of the block, in workspace coordinates. Value must not be null.

Parameter

blockTL

goog.math.Coordinate

The location of the top left corner of the block, in workspace coordinates.

Value must not be null.

setCheck

setCheck(check) returns Blockly.Connection

Change a connection's compatibility.

Parameter
check	Compatible value type or list of value types. Null if all types are compatible.

Inherited from: Blockly.Connection#setCheck
Returns: The connection being modified (to allow chaining).

setHidden

setHidden(hidden)

Set whether this connections is hidden (not tracked in a database) or not.

Parameter
hidden	boolean True if connection is hidden.

Parameter

hidden

boolean

True if connection is hidden.

setOffsetInBlock

setOffsetInBlock(x, y)

Set the offset of this connection relative to the top left of its block.

Parameter
x	number The new relative x, in workspace units.
y	number The new relative y, in workspace units.

Parameter

number

The new relative x, in workspace units.

number

The new relative y, in workspace units.

setShadowDom

setShadowDom(shadow)

Change a connection's shadow block.

Parameter
shadow	DOM representation of a block or null.

Inherited from: Blockly.Connection#setShadowDom

targetBlock

targetBlock() returns Blockly.Block

Returns the block that this connection connects to.

Inherited from: Blockly.Connection#targetBlock
Returns: The connected block or null if none is connected.

toString

toString() returns string

This method returns a string describing this Connection in developer terms (English only). Intended to on be used in console logs and errors.

Inherited from: Blockly.Connection#toString
Returns: The description.

unhideAll

unhideAll() returns Array of non-null Blockly.Block

Unhide this connection, as well as all down-stream connections on any block attached to this connection. This happens when a block is expanded. Also unhides down-stream comments.

Returns: non-null Array of non-null Blockly.Block List of blocks to render.

unhighlight

unhighlight()

Remove the highlighting around this connection.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

上次更新日期：十一月 2, 2018