# Class Ext.Fx

Package: | Ext
Defined In: | Fx.js
Class: | Fx
Extends: | Object

A class to provide basic animation and visual effects support. Note: This class is automatically applied to the Ext.Element interface when included, so all effects calls should be performed via Ext.Element. Conversely, since the effects are not actually defined in Ext.Element, Ext.Fx must be included in order for the Element effects to work.

Method Chaining

It is important to note that although the Fx methods and many non-Fx Element methods support "method chaining" in that they return the Element object itself as the method return value, it is not always possible to mix the two in a single method chain. The Fx methods use an internal effects queue so that each effect can be properly timed and sequenced. Non-Fx methods, on the other hand, have no such internal queueing and will always execute immediately. For this reason, while it may be possible to mix certain Fx and non-Fx method calls in a single chain, it may not always provide the expected results and should be done with care. Also see `callback`.

Anchor Options for Motion Effects

Motion effects support 8-way anchoring, meaning that you can choose one of 8 different anchor points on the Element that will serve as either the start or end point of the animation. 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
    r      The center of the right edge
    bl     The bottom left corner
    b      The center of the bottom edge
    br     The bottom right corner

Note: some Fx methods accept specific custom config parameters. The options shown in the Config Options section below are common options that can be passed to any Fx method unless otherwise noted.

## Config Options

Config Options | Defined By
--- | ---
| afterCls : String A css class to apply after the effect | Fx
| afterStyle : String/Object/Function A style specification string, e.g. "width:100px", or an object in the form {width:"100px"}, or a function which retu... A style specification string, e.g. `"width:100px"`, or an object in the form `{width:"100px"}`, or a function which returns such a specification that will be applied to the Element after the effect finishes. | Fx
| block : Boolean Whether the effect should block other effects from queueing while it runs | Fx
| callback : Function A function called when the effect is finished. Note that effects are queued internally by the Fx class, so a callba... A function called when the effect is finished. Note that effects are queued internally by the Fx class, so a callback is not required to specify another effect -- effects can simply be chained together and called in sequence (see note for Method Chaining above), for example:
    el.slideIn().highlight();
The callback is intended for any additional code that should run once a particular effect has completed. The Element being operated upon is passed as the first parameter. | Fx
| concurrent : Boolean Whether to allow subsequently-queued effects to run at the same time as the current effect, or to ensure that they ru... Whether to allow subsequently-queued effects to run at the same time as the current effect, or to ensure that they run in sequence | Fx
| duration : Number The length of time (in seconds) that the effect should last | Fx
| easing : String A valid Ext.lib.Easing value for the effect:<div class="mdetail-params"> backBoth backIn backOut bounceBoth boun... A valid Ext.lib.Easing value for the effect: `backBoth` `backIn` `backOut` `bounceBoth` `bounceIn` `bounceOut` `easeBoth` `easeBothStrong` `easeIn` `easeInStrong` `easeNone` `easeOut` `easeOutStrong` `elasticBoth` `elasticIn` `elasticOut` | Fx
| endOpacity : Number Only applicable for fadeIn or fadeOut, a number between `0` and `1` inclusive to configure the ending opacity value. | Fx
| remove : Boolean Whether the Element should be removed from the DOM and destroyed after the effect finishes | Fx
| scope : Object The scope (`this` reference) in which the `callback` function is executed. Defaults to the browser window. | Fx
| stopFx : Boolean Whether preceding effects should be stopped and removed before running current effect (only applies to non blocking e... Whether preceding effects should be stopped and removed before running current effect (only applies to non blocking effects) | Fx
| useDisplay : Boolean Whether to use the display CSS property instead of visibility when hiding Elements (only applies to effects that en... Whether to use the display CSS property instead of visibility when hiding Elements (only applies to effects that end with the element being visually hidden, ignored otherwise) | Fx

## Public Properties

This class has no public properties.

## Public Methods

Method | Defined By
--- | ---
| fadeIn( [`Object options`] ) : Ext.Element Fade an element in (from transparent to opaque). The ending opacity can be specified using the endOpacity config op... Fade an element in (from transparent to opaque). The ending opacity can be specified using the `endOpacity` config option. Usage:
    // default: fade in from opacity 0 to 100%

    el.fadeIn();

    // custom: fade in from opacity 0 to 75% over 2 seconds

    el.fadeIn({ endOpacity: .75, duration: 2});

    // common config options shown with default values

    el.fadeIn({
        endOpacity: 1, //can be any value between 0 and 1 (e.g. .5)

        easing: 'easeOut',
        duration: .5
    });
Parameters: `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| fadeOut( [`Object options`] ) : Ext.Element Fade an element out (from opaque to transparent). The ending opacity can be specified using the endOpacity config o... Fade an element out (from opaque to transparent). The ending opacity can be specified using the `endOpacity` config option. Note that IE may require `useDisplay:true` in order to redisplay correctly. Usage:
    // default: fade out from the element's current opacity to 0

    el.fadeOut();

    // custom: fade out from the element's current opacity to 25% over 2 seconds

    el.fadeOut({ endOpacity: .25, duration: 2});

    // common config options shown with default values

    el.fadeOut({
        endOpacity: 0, //can be any value between 0 and 1 (e.g. .5)

        easing: 'easeOut',
        duration: .5,
        remove: false,
        useDisplay: false
    });
Parameters: `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| frame( [`String color`], [`Number count`], [`Object options`] ) : Ext.Element Shows a ripple of exploding, attenuating borders to draw attention to an Element. Usage: // default: a single light... Shows a ripple of exploding, attenuating borders to draw attention to an Element. Usage:
    // default: a single light blue ripple

    el.frame();

    // custom: 3 red ripples lasting 3 seconds total

    el.frame("ff0000", 3, { duration: 3 });

    // common config options shown with default values

    el.frame("C3DAF9", 1, {
        duration: 1 //duration of each individual ripple.

        // Note: Easing is not configurable and will be ignored if included

    });
Parameters: `color` : String (optional) The color of the border. Should be a 6 char hex color without the leading # (defaults to light blue: 'C3DAF9'). `count` : Number (optional) The number of ripples to display (defaults to 1) `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| ghost( [`String anchor`], [`Object options`] ) : Ext.Element Slides the element while fading it out of view. An anchor point can be optionally passed to set the ending point o... Slides the element while fading it out of view. An anchor point can be optionally passed to set the ending point of the effect. Usage:
    // default: slide the element downward while fading out

    el.ghost();

    // custom: slide the element out to the right with a 2-second duration

    el.ghost('r', { duration: 2 });

    // common config options shown with default values

    el.ghost('b', {
        easing: 'easeOut',
        duration: .5,
        remove: false,
        useDisplay: false
    });
Parameters: `anchor` : String (optional) One of the valid Fx anchor positions (defaults to bottom: 'b') `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| hasActiveFx() : Boolean Returns true if the element has any effects actively running or queued, else returns false. Returns true if the element has any effects actively running or queued, else returns false. Parameters: None. Returns: `Boolean` True if element has active effects, else false | Fx
| hasFxBlock() : Boolean Returns true if the element is currently blocking so that no other effect can be queued until this effect is finishe... Returns true if the element is currently blocking so that no other effect can be queued until this effect is finished, else returns false if blocking is not set. This is commonly used to ensure that an effect initiated by a user action runs to completion prior to the same effect being restarted (e.g., firing only one effect even if the user clicks several times). Parameters: None. Returns: `Boolean` True if blocking, else false | Fx
| highlight( [`String color`], [`Object options`] ) : Ext.Element Highlights the Element by setting a color (applies to the background-color by default, but can be changed using the ... Highlights the Element by setting a color (applies to the background-color by default, but can be changed using the "attr" config option) and then fading back to the original color. If no original color is available, you should provide the "endColor" config option which will be cleared after the animation. Usage:
    // default: highlight background to yellow

    el.highlight();

    // custom: highlight foreground text to blue for 2 seconds

    el.highlight("0000ff", { attr: 'color', duration: 2 });

    // common config options shown with default values

    el.highlight("ffff9c", {
        attr: "background-color", //can be any valid CSS property (attribute) that supports a color value

        endColor: (current color) or "ffffff",
        easing: 'easeIn',
        duration: 1
    });
Parameters: `color` : String (optional) The highlight color. Should be a 6 char hex color without the leading # (defaults to yellow: 'ffff9c') `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| pause( `Number seconds` ) : Ext.Element Creates a pause before any subsequent queued effects begin. If there are no effects queued after the pause it will ... Creates a pause before any subsequent queued effects begin. If there are no effects queued after the pause it will have no effect. Usage:
    el.pause(1);
Parameters: `seconds` : Number The length of time to pause (in seconds) Returns: `Ext.Element` The Element | Fx
| puff( [`Object options`] ) : Ext.Element Fades the element out while slowly expanding it in all directions. When the effect is completed, the element will ... Fades the element out while slowly expanding it in all directions. When the effect is completed, the element will be hidden (visibility = 'hidden') but block elements will still take up space in the document. The element must be removed from the DOM using the 'remove' config option if desired. Usage:
    // default

    el.puff();

    // common config options shown with default values

    el.puff({
        easing: 'easeOut',
        duration: .5,
        remove: false,
        useDisplay: false
    });
Parameters: `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| scale( `Number width`, `Number height`, [`Object options`] ) : Ext.Element Animates the transition of an element's dimensions from a starting height/width to an ending height/width. This met... Animates the transition of an element's dimensions from a starting height/width to an ending height/width. This method is a convenience implementation of shift. Usage:
    // change height and width to 100x100 pixels

    el.scale(100, 100);

    // common config options shown with default values.  The height and width will default to

    // the element's existing values if passed as null.

    el.scale(
        [element's width],
        [element's height], {
            easing: 'easeOut',
            duration: .35
        }
    );
Parameters: `width` : Number The new width (pass undefined to keep the original width) `height` : Number The new height (pass undefined to keep the original height) `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| sequenceFx() : Ext.Element Ensures that all effects queued after sequenceFx is called on the element are run in sequence. This is the opposite... Ensures that all effects queued after sequenceFx is called on the element are run in sequence. This is the opposite of syncFx. Parameters: None. Returns: `Ext.Element` The Element | Fx
| shift( `Object options` ) : Ext.Element Animates the transition of any combination of an element's dimensions, xy position and/or opacity. Any of these prop... Animates the transition of any combination of an element's dimensions, xy position and/or opacity. Any of these properties not specified in the config object will not be changed. This effect requires that at least one new dimension, position or opacity setting must be passed in on the config object in order for the function to have any effect. Usage:
    // slide the element horizontally to x position 200 while changing the height and opacity

    el.shift({ x: 200, height: 50, opacity: .8 });

    // common config options shown with default values.

    el.shift({
        width: [element's width],
        height: [element's height],
        x: [element's x position],
        y: [element's y position],
        opacity: [element's opacity],
        easing: 'easeOut',
        duration: .35
    });
Parameters: `options` : Object Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| slideIn( [`String anchor`], [`Object options`] ) : Ext.Element Slides the element into view. An anchor point can be optionally passed to set the point of origin for the slide eff... Slides the element into view. An anchor point can be optionally passed to set the point of origin for the slide effect. This function automatically handles wrapping the element with a fixed-size container if needed. See the Fx class overview for valid anchor point options. Usage:
    // default: slide the element in from the top

    el.slideIn();

    // custom: slide the element in from the right with a 2-second duration

    el.slideIn('r', { duration: 2 });

    // common config options shown with default values

    el.slideIn('t', {
        easing: 'easeOut',
        duration: .5
    });
Parameters: `anchor` : String (optional) One of the valid Fx anchor positions (defaults to top: 't') `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| slideOut( [`String anchor`], [`Object options`] ) : Ext.Element Slides the element out of view. An anchor point can be optionally passed to set the end point for the slide effect.... Slides the element out of view. An anchor point can be optionally passed to set the end point for the slide effect. When the effect is completed, the element will be hidden (visibility = 'hidden') but block elements will still take up space in the document. The element must be removed from the DOM using the 'remove' config option if desired. This function automatically handles wrapping the element with a fixed-size container if needed. See the Fx class overview for valid anchor point options. Usage:
    // default: slide the element out to the top

    el.slideOut();

    // custom: slide the element out to the right with a 2-second duration

    el.slideOut('r', { duration: 2 });

    // common config options shown with default values

    el.slideOut('t', {
        easing: 'easeOut',
        duration: .5,
        remove: false,
        useDisplay: false
    });
Parameters: `anchor` : String (optional) One of the valid Fx anchor positions (defaults to top: 't') `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| stopFx() : Ext.Element Stops any running effects and clears the element's internal effects queue if it contains any additional effects that... Stops any running effects and clears the element's internal effects queue if it contains any additional effects that haven't started yet. Parameters: None. Returns: `Ext.Element` The Element | Fx
| switchOff( [`Object options`] ) : Ext.Element Blinks the element as if it was clicked and then collapses on its center (similar to switching off a television). Wh... Blinks the element as if it was clicked and then collapses on its center (similar to switching off a television). When the effect is completed, the element will be hidden (visibility = 'hidden') but block elements will still take up space in the document. The element must be removed from the DOM using the 'remove' config option if desired. Usage:
    // default

    el.switchOff();

    // all config options shown with default values

    el.switchOff({
        easing: 'easeIn',
        duration: .3,
        remove: false,
        useDisplay: false
    });
Parameters: `options` : Object (optional) Object literal with any of the Fx config options Returns: `Ext.Element` The Element | Fx
| syncFx() : Ext.Element Ensures that all effects queued after syncFx is called on the element are run concurrently. This is the opposite of... Ensures that all effects queued after syncFx is called on the element are run concurrently. This is the opposite of sequenceFx. Parameters: None. Returns: `Ext.Element` The Element | Fx

## Public Events

This class has no public events.