Class: BlockChange

Blockly.Events.BlockChange

class   static

Class for a block change event.

Constructor

BlockChange

new BlockChange(opt_block, opt_element, opt_name, opt_oldValue, opt_newValue)

Parameter
opt_block	Optional The changed block. Undefined for a blank event. Value must not be null.
opt_element	Optional One of 'field', 'comment', 'disabled', etc.
opt_name	Optional Name of input or field affected, or null. Value may be null.
opt_oldValue	Optional Previous value of element.
opt_newValue	Optional New value of element.

Extends

Blockly.Events.BlockBase

Properties

type

string

Type of this event.

blockId

unknown

The block ID for the block this event pertains to

Inherited from

Blockly.Events.BlockBase#blockId

group

unknown

The event group id for the group this event belongs to. Groups define events that should be treated as an single action from the user's perspective, and should be undone together.

Inherited from

Blockly.Events.Abstract#group

isBlank

unknown

Whether or not the event is blank (to be populated by fromJson).

Inherited from

Blockly.Events.Abstract#isBlank

isUiEvent

unknown

Whether or not the event is a UI event.

Inherited from

Blockly.Events.Abstract#isUiEvent

recordUndo

unknown

Sets whether the event should be added to the undo stack.

Inherited from

Blockly.Events.Abstract#recordUndo

workspaceId

unknown

The workspace identifier for this event.

Inherited from

Blockly.Events.BlockBase#workspaceId

Methods

getExtraBlockState_

package   static

getExtraBlockState_(block) returns string

Returns the extra state of the given block (either as XML or a JSO, depending on the block's definition).

Parameter
block	Blockly.BlockSvg The block to get the extra state of. Value must not be null.

Returns

string A stringified version of the extra state of the given block.

fromJson

fromJson(json)

Decode the JSON event.

Parameter
json	Object JSON representation. Value must not be null.

isNull

isNull() returns boolean

Does this event record any change of state?

Returns

boolean False if something changed.

run

run(forward)

Run a change event.

Parameter
forward	boolean True if run forward, false if run backward (undo).

toJson

toJson() returns Object

Encode the event as JSON.

Returns

non-null Object JSON representation.

getEventWorkspace_

protected

getEventWorkspace_() returns Blockly.Workspace

Get workspace the event belongs to.

Inherited from

Blockly.Events.Abstract#getEventWorkspace_

Throws

if workspace is null.

Returns

The workspace the event belongs to.