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## Sencha Documentation

# Ext.dd.ScrollManager

Provides automatic scrolling of overflow regions in the page during drag operations.

The ScrollManager configs will be used as the defaults for any scroll container registered with it, but you can also override most of the configs per scroll container by adding a `ddScrollConfig` object to the target element that contains these properties: hthresh, vthresh, increment and frequency. Example usage:

    var el = Ext.get('scroll-ct');
    el.ddScrollConfig = {
        vthresh: 50,
        hthresh: -1,
        frequency: 100,
        increment: 200
    };
    Ext.dd.ScrollManager.register(el);

Note: This class uses "Point Mode" and is untested in "Intersect Mode".
Defined By

### Properties

Ext.dd.ScrollManager
view source
animDuration : Number

The animation duration in seconds - MUST BE less than Ext.dd.ScrollManager.frequency! (defaults to .4)

The animation duration in seconds - MUST BE less than Ext.dd.ScrollManager.frequency! (defaults to .4)

Ext.dd.ScrollManager
view source
animate : Boolean

True to animate the scroll (defaults to true)

True to animate the scroll (defaults to true)

Ext.dd.ScrollManager
view source
ddGroup : String
The named drag drop group to which this container belongs (defaults to undefined). If a ddGroup is specified, then co...

The named drag drop group to which this container belongs (defaults to undefined). If a ddGroup is specified, then container scrolling will only occur when a dragged object is in the same ddGroup.

Ext.dd.ScrollManager
view source
frequency : Number

The frequency of scrolls in milliseconds (defaults to 500)

The frequency of scrolls in milliseconds (defaults to 500)

Ext.dd.ScrollManager
view source
hthresh : Number
The number of pixels from the right or left edge of a container the pointer needs to be to trigger scrolling (default...

The number of pixels from the right or left edge of a container the pointer needs to be to trigger scrolling (defaults to 25)

Ext.dd.ScrollManager
view source
increment : Number

The number of pixels to scroll in each scroll increment (defaults to 100)

The number of pixels to scroll in each scroll increment (defaults to 100)

Ext.dd.ScrollManager
view source
vthresh : Number
The number of pixels from the top or bottom edge of a container the pointer needs to be to trigger scrolling (default...

The number of pixels from the top or bottom edge of a container the pointer needs to be to trigger scrolling (defaults to 25)

Defined By

### Methods

Ext.dd.ScrollManager
view source
refreshCache : void

Manually trigger a cache refresh.

Manually trigger a cache refresh.

### Returns

- void

Ext.dd.ScrollManager
view source
register( Mixed/Array el) : void

Registers new overflow element(s) to auto scroll

Registers new overflow element(s) to auto scroll

### Parameters

- el : Mixed/Array

  The id of or the element to be scrolled or an array of either

### Returns

- void

Ext.dd.ScrollManager
view source
unregister( Mixed/Array el) : void

Unregisters overflow element(s) so they are no longer scrolled

Unregisters overflow element(s) so they are no longer scrolled

### Parameters

- el : Mixed/Array

  The id of or the element to be removed or an array of either

### Returns

- void