API Docs for: 3.18.1

WidgetPositionConstrain Class

Defined in: widget-position-constrain/js/Widget-PositionConstrain.js:30
Module: widget-position-constrain

A widget extension, which can be used to add constrained xy positioning support to the base Widget class, through the Base.build method. This extension requires that the WidgetPosition extension be added to the Widget (before WidgetPositionConstrain, if part of the same extension list passed to Base.build).

Item Index

Methods

Properties

Attributes

Methods

constrain

(
  • xy
  • node
)

Defined in widget-position-constrain/js/Widget-PositionConstrain.js:130

Constrains the widget's bounding box to a node (or the viewport). If xy or node are not passed in, the current position and the value of "constrain" will be used respectively.

The widget's position will be changed to the constrained position.

Parameters:

  • xy Array

    Optional. The xy values to constrain

  • node Node | boolean

    Optional. The node to constrain to, or true for the viewport

getConstrainedXY

(
  • xy
  • node
)
Array

Defined in widget-position-constrain/js/Widget-PositionConstrain.js:108

Calculates the constrained positions for the XY positions provided, using the provided node argument is passed in. If no node value is passed in, the value of the "constrain" attribute is used.

Parameters:

  • xy Array

    The xy values to constrain

  • node Node | boolean

    Optional. The node to constrain to, or true for the viewport

Returns:

Array:

The constrained xy values

Properties

ATTRS

Object static

Defined in widget-position-constrain/js/Widget-PositionConstrain.js:41

Static property used to define the default attribute configuration introduced by WidgetPositionConstrain.

Attributes

constrain

Boolean | Node

Defined in widget-position-constrain/js/Widget-PositionConstrain.js:51

The node to constrain the widget's bounding box to, when setting xy. Can also be set to true, to constrain to the viewport.

Default: null

Fires event constrainChange

Fires when the value for the configuration attribute constrain is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

  • e EventFacade
    An Event Facade object with the following attribute-specific properties added:
    • prevVal Any
      The value of the attribute, prior to it being set.
    • newVal Any
      The value the attribute is to be set to.
    • attrName String
      The name of the attribute being set.
    • subAttrName String
      If setting a property within the attribute's value, the name of the sub-attribute property being set.

preventOverlap

Boolean

Defined in widget-position-constrain/js/Widget-PositionConstrain.js:63

If set to true, and WidgetPositionAlign is also added to the Widget, constrained positioning will attempt to prevent the widget's bounding box from overlapping the element to which it has been aligned, by flipping the orientation of the alignment for corner based alignments

Fires event preventOverlapChange

Fires when the value for the configuration attribute preventOverlap is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

  • e EventFacade
    An Event Facade object with the following attribute-specific properties added:
    • prevVal Any
      The value of the attribute, prior to it being set.
    • newVal Any
      The value the attribute is to be set to.
    • attrName String
      The name of the attribute being set.
    • subAttrName String
      If setting a property within the attribute's value, the name of the sub-attribute property being set.