ExtReact Docs Help

Introduction

The documentation for the ExtReact product diverges somewhat from the documentation of other Sencha products. The sections below describe documentation for all products except where indicated as unique to ExtReact.

Terms, Icons, and Labels

Many classes have shortcut names used when creating (instantiating) a class with a configuration object. The shortcut name is referred to as an alias (or xtype if the class extends Ext.Component). The alias/xtype is listed next to the class name of applicable classes for quick reference.

ExtReact component classes list the configurable name prominently at the top of the API class doc followed by the fully-qualified class name.

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Below is an example class member that we can disect to show the syntax of a class member (the lookupComponent method as viewed from the Ext.button.Button class in this case).

lookupComponent ( item ) : Ext.Component
protected

Called when a raw config object is added to this container either during initialization of the items config, or when new items are added), or {@link #insert inserted.

This method converts the passed object into an instanced child component.

This may be overridden in subclasses when special processing needs to be applied to child creation.

Parameters

item :  Object

The config object being added.

Returns
Ext.Component

The component to be added.

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ExtReact 6.7.0


top

Ext.util.Region

NPM Package

@sencha/ext-react

Hierarchy

Ext.Base
Ext.util.Region

Requires

Ext.util.Offset

Summary

This class represents a rectangular region in X,Y space, and performs geometric transformations or tests upon the region.

This class may be used to compare the document regions occupied by elements.

No members found using the current filters

properties

methods

Instance Methods

adjust ( top, right, bottom, left ) : Ext.util.Region
chainable ch

Modifies the current region to be adjusted by offsets.

Parameters

top :  Number

Top offset

right :  Number

Right offset

bottom :  Number

Bottom offset

left :  Number

Left offset

Returns

:Ext.util.Region

this

adjust ( top, right, bottom, left ) : Ext.util.Region

Modifies the current region to be adjusted by offsets.

Parameters

top :  Number

Top offset

right :  Number

Right offset

bottom :  Number

Bottom offset

left :  Number

Left offset

Returns

:Ext.util.Region

this

alignTo ( options ) : Ext.util.Region

Returns the Region to which this rectangle should be moved in order to have the desired alignment with the specified target while remaining within the constraint.

The align option can be one of these forms:

  • Blank: Defaults to aligning the region's top-left corner to the target's bottom-left corner ("tl-bl").
  • Two anchors: If two values from the table below are passed separated by a dash, the first value is used as this region's anchor point, and the second value is used as the target's anchor point.
  • One anchor: The passed anchor position is used as the target's anchor point. This region will position its top-left corner (tl) to that point.
  • Two edge/offset descriptors: An edge/offset descriptor is an edge initial (t/r/b/l) followed by a percentage along that side. This describes a point to align with a similar point in the target. So 't0-b0' would be the same as 'tl-bl', 'l0-r50' would place the top left corner of this item halfway down the right edge of the target item. This allows more flexibility and also describes which two edges are considered adjacent when positioning an anchor.

If the inside option is passed, the Region will attempt to align as specified, but the position will be adjusted to constrain to the inside Region if necessary. Note that the Region being aligned might be swapped to align to a different position than that specified in order to enforce the constraints. Following are all of the supported anchor positions:

 Value  Description
 -----  -----------------------------
 tl     The top left corner
 t      The center of the top edge
 tr     The top right corner
 l      The center of the left edge
 c      The center
 r      The center of the right edge
 bl     The bottom left corner
 b      The center of the bottom edge
 br     The bottom right corner

Example Usage:

 var xy = comp.getRegion().alignTo({
     align: 't-b',  // align comp's top/center to el's bottom/center
     target: el.getRegion(),
     anchorSize: new Ext.util.Point(10, 10),
     inside: new Ext.util.Region(0, Ext.Element.getViewportWidth(),
                                 Ext.Element.getViewportHeight(), 0)
 });

Parameters

options :  Object

The alignment options.

target :  Ext.util.Region

The rectangle to which this rectangle should align.

align :  String (optional)

The alignment descriptor for positioning this rectangle with respect to the target. See Ext.util.Positionable#alignTo. Note that if the requested alignment results in violation of the inside constraint, the result will be flipped align to the closest edge which conforms to the constraint.

Defaults to:

tl-bl

position :  Array / Ext.util.Position (optional)

The position at which to place the resulting region before being excluded from the target area and aligned to the closest edge which allows conformity with any passed inside option. Used instead of the align option.

offset :  Ext.util.Offset / Number[] (optional)

An offset by which to adjust the result.

anchorSize :  Ext.util.Offset / Number[] (optional)

The width and height of any external anchor element. This is used to calculate the true bounds of the Region inclusive of the anchor. The x dimension is the height of the arrow in all orientations, and the y dimension is the width of the baseline of the arrow in all dimensions. If this option is used, and the returned region successfully clears the bounds of the target, then the anchor region will be returned in the return value as the anchor property. This will in turn have a position property which will be 'top', 'left, 'right', or 'bottom'.

overlap :  Boolean (optional)

Pass true to allow this rectangle to overlap the target.

rtl :  Boolean (optional)

Pass true to swap left/right alignment.

inside :  Ext.util.Region / Ext.dom.Element (optional)

The rectangle to which this rectangle is constrained.

minHeight :  Number (optional)

Used when this Region is to be aligned directly below or above the target. Gives the option to reduce the height to fit in the available space.

axisLock :  Boolean (optional)

If true, then fallback on constraint violation will only take place along the major align axis. That is, if align: "l-r" is being used, and axisLock: true is used, then if constraints fail, only fallback to r-l is considered.

Returns

:Ext.util.Region

The Region that will align this rectangle. Note that if a minHeight option was passed, and alignment is either above or below the target, the Region might be reduced to fit within the space.

alignTo ( options ) : Ext.util.Region

Returns the Region to which this rectangle should be moved in order to have the desired alignment with the specified target while remaining within the constraint.

The align option can be one of these forms:

  • Blank: Defaults to aligning the region's top-left corner to the target's bottom-left corner ("tl-bl").
  • Two anchors: If two values from the table below are passed separated by a dash, the first value is used as this region's anchor point, and the second value is used as the target's anchor point.
  • One anchor: The passed anchor position is used as the target's anchor point. This region will position its top-left corner (tl) to that point.
  • Two edge/offset descriptors: An edge/offset descriptor is an edge initial (t/r/b/l) followed by a percentage along that side. This describes a point to align with a similar point in the target. So 't0-b0' would be the same as 'tl-bl', 'l0-r50' would place the top left corner of this item halfway down the right edge of the target item. This allows more flexibility and also describes which two edges are considered adjacent when positioning an anchor.

If the inside option is passed, the Region will attempt to align as specified, but the position will be adjusted to constrain to the inside Region if necessary. Note that the Region being aligned might be swapped to align to a different position than that specified in order to enforce the constraints. Following are all of the supported anchor positions:

 Value  Description
 -----  -----------------------------
 tl     The top left corner
 t      The center of the top edge
 tr     The top right corner
 l      The center of the left edge
 c      The center
 r      The center of the right edge
 bl     The bottom left corner
 b      The center of the bottom edge
 br     The bottom right corner

Example Usage:

 var xy = comp.getRegion().alignTo({
     align: 't-b',  // align comp's top/center to el's bottom/center
     target: el.getRegion(),
     anchorSize: new Ext.util.Point(10, 10),
     inside: new Ext.util.Region(0, Ext.Element.getViewportWidth(), Ext.Element.getViewportHeight(), 0)
 });

Parameters

options :  Object

The alignment options.

target :  Ext.util.Region

The rectangle to which this rectangle should align.

align :  String (optional)

The alignment descriptor for positioning this rectangle with respect to the target. See Ext.util.Positionable#alignTo. Note that if the requested alignment results in violation of the inside constraint, the result will be flipped align to the closest edge which conforms to the constraint.

Defaults to:

tl-bl

position :  Array / Ext.util.Position (optional)

The position at which to place the resulting region before being excluded from the target area and aligned to the closest edge which allows conformity with any passed inside option. Used instead of the align option.

offset :  Ext.util.Offset / Number[] (optional)

An offset by which to adjust the result.

anchorSize :  Ext.util.Offset / Number[] (optional)

The width and height of any external anchor element. This is used to calculate the true bounds of the Region inclusive of the anchor. The x dimension is the height of the arrow in all orientations, and the y dimension is the width of the baseline of the arrow in all dimensions. If this option is used, and the returned region successfully clears the bounds of the target, then the anchor region will be returned in the return value as the anchor property. This will in turn have a position property which will be 'top', 'left, 'right', or 'bottom'.

overlap :  Boolean (optional)

Pass true to allow this rectangle to overlap the target.

rtl :  Boolean (optional)

Pass true to swap left/right alignment.

inside :  Ext.util.Region / Ext.dom.Element (optional)

The rectangle to which this rectangle is constrained.

minHeight :  Number (optional)

Used when this Region is to be aligned directly below or above the target. Gives the option to reduce the height to fit in the available space.

axisLock :  Boolean (optional)

If true, then fallback on constraint violation will only take place along the major align axis. That is, if align: "l-r" is being used, and axisLock: true is used, then if constraints fail, only fallback to r-l is considered.

Returns

:Ext.util.Region

The Region that will align this rectangle. Note that if a minHeight option was passed, and aligment is either above or below the target, the Region might be reduced to fit within the space.

constrainTo ( targetRegion ) : Ext.util.Region
chainable ch

Modifies the current region to be constrained to the targetRegion.

Parameters

targetRegion :  Ext.util.Region

Returns

:Ext.util.Region

this

constrainTo ( targetRegion ) : Ext.util.Region

Modifies the current region to be constrained to the targetRegion.

Parameters

targetRegion :  Ext.util.Region

Returns

:Ext.util.Region

this

constructor ( top, right, bottom, left )

Creates a region from the bounding sides.

Parameters

top :  Number

The topmost pixel of the Region.

right :  Number

The rightmost pixel of the Region.

bottom :  Number

The bottom pixel of the Region.

left :  Number

The leftmost pixel of the Region.

constructor ( top, right, bottom, left )

Parameters

top :  Number

The topmost pixel of the Region.

right :  Number

The rightmost pixel of the Region.

bottom :  Number

The bottom pixel of the Region.

left :  Number

The leftmost pixel of the Region.

contains ( region ) : Boolean

Checks if this region completely contains the region or point that is passed in.

Parameters

region :  Ext.util.Region/Ext.util.Point

Returns

:Boolean

contains ( region ) : Boolean

Checks if this region completely contains the region or point that is passed in.

Parameters

region :  Ext.util.Region/Ext.util.Point

Returns

:Boolean

copy Ext.util.Region

Create a copy of this Region.

Returns

:Ext.util.Region

copy Ext.util.Region

Create a copy of this Region.

Returns

:Ext.util.Region

copyFrom ( p ) : Ext.util.Region
chainable ch

Copy the values of another Region to this Region

Parameters

p :  Ext.util.Region

The region to copy from.

Returns

:Ext.util.Region

This Region

copyFrom ( p ) : Ext.util.Region

Copy the values of another Region to this Region

Parameters

p :  Ext.util.Region

The region to copy from.

Returns

:Ext.util.Region

This Region

equals ( region ) : Boolean

Check whether this region is equivalent to the given region

Parameters

region :  Ext.util.Region

The region to compare with

Returns

:Boolean

equals ( region ) : Boolean

Check whether this region is equivalent to the given region

Parameters

region :  Ext.util.Region

The region to compare with

Returns

:Boolean

exclude ( other, options ) : Number

This method pushes the "other" Region out of this region via the shortest translation. If an "inside" Region is passed, the exclusion also honours that constraint.

Parameters

other :  Region

The Region to move so that it does not intersect this Region.

options :  Object

Object of options passed to exclude.

inside :  Region

A Region into which the other Region must be constrained.

minHeight :  Number (optional)

If passed, indicates that the height may be reduced up to a point to fit the "other" region below or above the target but within the "inside" Region.

allowX :  Boolean (optional)

Pass false to disallow translation along the X axis.

Defaults to:

true

allowY :  Boolean (optional)

Pass false to disallow translation along the Y axis.

Defaults to:

true

Returns

:Number

The edge it is now aligned to, 0=top, 1=right, 2=bottom, 3=left.

exclude ( other, inside, [minHeight], [allowX], [allowY] ) : Number

This method pushes the "other" Region out of this region via the shortest translation. If an "inside" Region is passed, the exclusion also honours that constraint.

Parameters

other :  Region

The Region to move so that it does not intersect this Region.

inside :  Region

A Region into which the other Region must be constrained.

minHeight :  Number (optional)

If passed, indicates that the height may be reduced up to a point to fit the "other" region below or above the target but within the "inside" Region.

allowX :  Boolean (optional)

Pass false to disallow translation along the X axis.

Defaults to: true

allowY :  Boolean (optional)

Pass false to disallow translation along the Y axis.

Defaults to: true

Returns

:Number

The edge it is now aligned to, 0=top, 1=right, 2=bottom, 3=left.

getAlignInfo ( align, [rtl] )

This function converts a legacy alignment string such as 't-b' into a pair of edge, offset objects which describe the alignment points of the two regions.

So tl-br becomes {myEdge:'t', offset:0}, {otherEdge:'b', offset:100}

This not only allows more flexibility in the alignment possibilities, but it also resolves any ambiguity as to chich two edges are desired to be adjacent if an anchor pointer is required.

Parameters

align :  String

The align spec, eg "tl-br"

rtl :  Boolean (optional)

Pass true to use RTL calculations.

getOffsetsTo ( offsetsTo ) : Object

Returns the offsets of this region from the passed region or point.

Parameters

offsetsTo :  Ext.util.Region/Ext.util.Point

The region or point to get get the offsets from.

Returns

:Object

The XY page offsets

x :  Number

The x offset

y :  Number

The y offset

getOffsetsTo ( offsetsTo ) : Object

Returns the offsets of this region from the passed region or point.

Parameters

offsetsTo :  Ext.util.Region/Ext.util.Point

The region or point to get get the offsets from.

Returns

:Object

The XY page offsets

x :  Number

The x offset

y :  Number

The y offset

getOutOfBoundOffset ( [axis], [p] ) : Ext.util.Offset

Get the offset amount of a point outside the region

Parameters

axis :  String (optional)

p :  Ext.util.Point (optional)

the point

Returns

:Ext.util.Offset

getOutOfBoundOffset ( [axis], [p] ) : Ext.util.Offset

Get the offset amount of a point outside the region

Parameters

axis :  String (optional)

p :  Ext.util.Point (optional)

the point

Returns

:Ext.util.Offset

getOutOfBoundOffsetX ( p ) : Number

Get the offset amount on the x-axis

Parameters

p :  Number

the offset

Returns

:Number

getOutOfBoundOffsetX ( p ) : Number

Get the offset amount on the x-axis

Parameters

p :  Number

the offset

Returns

:Number

getOutOfBoundOffsetY ( p ) : Number

Get the offset amount on the y-axis

Parameters

p :  Number

the offset

Returns

:Number

getOutOfBoundOffsetY ( p ) : Number

Get the offset amount on the y-axis

Parameters

p :  Number

the offset

Returns

:Number

getSize Object
private pri

Get the width / height of this region

Returns

:Object

an object with width and height properties

intersect ( region ) : Ext.util.Region/Boolean

Checks if this region intersects the region passed in.

Parameters

region :  Ext.util.Region

Returns

:Ext.util.Region/Boolean

Returns the intersected region or false if there is no intersection.

intersect ( region ) : Ext.util.Region/Boolean

Checks if this region intersects the region passed in.

Parameters

region :  Ext.util.Region

Returns

:Ext.util.Region/Boolean

Returns the intersected region or false if there is no intersection.

isOutOfBound ( [axis], [p] ) : Boolean

Check whether the point / offset is out of bound

Parameters

axis :  String (optional)

p :  Ext.util.Point/Number (optional)

the point / offset

Returns

:Boolean

isOutOfBound ( [axis], [p] ) : Boolean

Check whether the point / offset is out of bound

Parameters

axis :  String (optional)

p :  Ext.util.Point/Number (optional)

the point / offset

Returns

:Boolean

isOutOfBoundX ( p ) : Boolean

Check whether the offset is out of bound in the x-axis

Parameters

p :  Number

the offset

Returns

:Boolean

isOutOfBoundX ( p ) : Boolean

Check whether the offset is out of bound in the x-axis

Parameters

p :  Number

the offset

Returns

:Boolean

isOutOfBoundY ( p ) : Boolean

Check whether the offset is out of bound in the y-axis

Parameters

p :  Number

the offset

Returns

:Boolean

isOutOfBoundY ( p ) : Boolean

Check whether the offset is out of bound in the y-axis

Parameters

p :  Number

the offset

Returns

:Boolean

restrict ( [axis], [p], [factor] ) : Ext.util.Point/Ext.util.Offset/Object/Number
private pri

Restrict a point within the region by a certain factor.

Parameters

axis :  String (optional)

p :  Ext.util.Point/Ext.util.Offset/Object (optional)

factor :  Number (optional)

Returns

:Ext.util.Point/Ext.util.Offset/Object/Number

restrictX ( p, [factor] ) : Number
private pri

Restrict an offset within the region by a certain factor, on the x-axis

Parameters

p :  Number

factor :  Number (optional)

The factor.

Defaults to: 1

Returns

:Number

restrictY ( p, [factor] ) : Number
private pri

Restrict an offset within the region by a certain factor, on the y-axis

Parameters

p :  Number

factor :  Number (optional)

The factor, defaults to 1

Returns

:Number

round Ext.util.Region
chainable ch

Round all the properties of this region

Returns

:Ext.util.Region

this This Region

round Ext.util.Region

Round all the properties of this region

Returns

:Ext.util.Region

this This Region

setPosition ( x, y ) : Ext.util.Region

Translates this Region to the specified position

Parameters

x :  Number

The new X position.

y :  Number

The new Y position.

Returns

:Ext.util.Region

This region after translation.

setPosition ( x, y ) : Ext.util.Region

Translates this Region to the specified position

Parameters

x :  Number

The new X position.

y :  Number

The new Y position.

Returns

:Ext.util.Region

This region after translation.

translateBy ( x, y ) : Ext.util.Region
chainable ch

Translate this Region by the given offset amount

Parameters

x :  Ext.util.Offset/Object

Object containing the x and y properties. Or the x value is using the two argument form.

y :  Number

The y value unless using an Offset object.

Returns

:Ext.util.Region

this This Region

translateBy ( x, y ) : Ext.util.Region

Translate this Region by the given offset amount

Parameters

x :  Ext.util.Offset/Object

Object containing the x and y properties. Or the x value is using the two argument form.

y :  Number

The y value unless using an Offset object.

Returns

:Ext.util.Region

this This Region

union ( region ) : Ext.util.Region

Returns the smallest region that contains the current AND targetRegion.

Parameters

region :  Ext.util.Region

Returns

:Ext.util.Region

a new region

union ( region ) : Ext.util.Region

Returns the smallest region that contains the current AND targetRegion.

Parameters

region :  Ext.util.Region

Returns

:Ext.util.Region

a new region

Static Methods

from ( o ) : Ext.util.Region
static sta

Creates a Region from a "box" Object which contains four numeric properties top, right, bottom and left.

Parameters

o :  Object

An object with top, right, bottom and left properties.

Returns

:Ext.util.Region

region The Region constructed based on the passed object

from ( o ) : Ext.util.Region
static sta

Creates a Region from a "box" Object which contains four numeric properties top, right, bottom and left.

Parameters

o :  Object

An object with top, right, bottom and left properties.

Returns

:Ext.util.Region

region The Region constructed based on the passed object

getAlignInfo ( align, [rtl] )
static sta

This function converts a legacy alignment string such as 't-b' into a pair of edge, offset objects which describe the alignment points of the two regions.

So tl-br becomes {myEdge:'t', offset:0}, {otherEdge:'b', offset:100}

This not only allows more flexibility in the alignment possibilities, but it also resolves any ambiguity as to which two edges are desired to be adjacent if an anchor pointer is required.

Parameters

align :  String

The align spec, eg "tl-br"

rtl :  Boolean (optional)

Pass true to use RTL calculations.

getRegion ( el ) : Ext.util.Region
static sta

Retrieves an Ext.util.Region for a particular element.

Parameters

el :  String/HTMLElement/Ext.dom.Element

An element ID, htmlElement or Ext.Element representing an element in the document.

Returns

:Ext.util.Region

region

getRegion ( el ) : Ext.util.Region
static sta

Retrieves an Ext.util.Region for a particular element.

Parameters

el :  String/HTMLElement/Ext.dom.Element

An element ID, htmlElement or Ext.Element representing an element in the document.

Returns

:Ext.util.Region

region

override ( members ) : Ext.Base
static sta

Override members of this class. Overridden methods can be invoked via Ext.Base#callParent.

Ext.define('My.Cat', {
    constructor: function() {
        alert("I'm a cat!");
    }
});

My.Cat.override({
    constructor: function() {
        alert("I'm going to be a cat!");

        this.callParent(arguments);

        alert("Meeeeoooowwww");
    }
});

var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                          // alerts "I'm a cat!"
                          // alerts "Meeeeoooowwww"

Direct use of this method should be rare. Use Ext.define instead:

Ext.define('My.CatOverride', {
    override: 'My.Cat',
    constructor: function() {
        alert("I'm going to be a cat!");

        this.callParent(arguments);

        alert("Meeeeoooowwww");
    }
});

The above accomplishes the same result but can be managed by the Ext.Loader which can properly order the override and its target class and the build process can determine whether the override is needed based on the required state of the target class (My.Cat).

Parameters

members :  Object

The properties to add to this class. This should be specified as an object literal containing one or more properties.

Returns

:Ext.Base

this class

ExtReact 6.7.0