/**
* @license Angular v12.2.4
* (c) 2010-2021 Google LLC. https://angular.io/
* License: MIT
*/
/**
* Defines an animation step that combines styling information with timing information.
*
* @param timings Sets `AnimateTimings` for the parent animation.
* A string in the format "duration [delay] [easing]".
* - Duration and delay are expressed as a number and optional time unit,
* such as "1s" or "10ms" for one second and 10 milliseconds, respectively.
* The default unit is milliseconds.
* - The easing value controls how the animation accelerates and decelerates
* during its runtime. Value is one of `ease`, `ease-in`, `ease-out`,
* `ease-in-out`, or a `cubic-bezier()` function call.
* If not supplied, no easing is applied.
*
* For example, the string "1s 100ms ease-out" specifies a duration of
* 1000 milliseconds, and delay of 100 ms, and the "ease-out" easing style,
* which decelerates near the end of the duration.
* @param styles Sets AnimationStyles for the parent animation.
* A function call to either `style()` or `keyframes()`
* that returns a collection of CSS style entries to be applied to the parent animation.
* When null, uses the styles from the destination state.
* This is useful when describing an animation step that will complete an animation;
* see "Animating to the final state" in `transitions()`.
* @returns An object that encapsulates the animation step.
*
* @usageNotes
* Call within an animation `sequence()`, `{@link animations/group group()}`, or
* `transition()` call to specify an animation step
* that applies given style data to the parent animation for a given amount of time.
*
* ### Syntax Examples
* **Timing examples**
*
* The following examples show various `timings` specifications.
* - `animate(500)` : Duration is 500 milliseconds.
* - `animate("1s")` : Duration is 1000 milliseconds.
* - `animate("100ms 0.5s")` : Duration is 100 milliseconds, delay is 500 milliseconds.
* - `animate("5s ease-in")` : Duration is 5000 milliseconds, easing in.
* - `animate("5s 10ms cubic-bezier(.17,.67,.88,.1)")` : Duration is 5000 milliseconds, delay is 10
* milliseconds, easing according to a bezier curve.
*
* **Style examples**
*
* The following example calls `style()` to set a single CSS style.
* ```typescript
* animate(500, style({ background: "red" }))
* ```
* The following example calls `keyframes()` to set a CSS style
* to different values for successive keyframes.
* ```typescript
* animate(500, keyframes(
* [
* style({ background: "blue" }),
* style({ background: "red" })
* ])
* ```
*
* @publicApi
*/
export declare function animate(timings: string | number, styles?: AnimationStyleMetadata | AnimationKeyframesSequenceMetadata | null): AnimationAnimateMetadata;
/**
* Executes a queried inner animation element within an animation sequence.
*
* @param options An options object that can contain a delay value for the start of the
* animation, and additional override values for developer-defined parameters.
* @return An object that encapsulates the child animation data.
*
* @usageNotes
* Each time an animation is triggered in Angular, the parent animation
* has priority and any child animations are blocked. In order
* for a child animation to run, the parent animation must query each of the elements
* containing child animations, and run them using this function.
*
* Note that this feature is designed to be used with `query()` and it will only work
* with animations that are assigned using the Angular animation library. CSS keyframes
* and transitions are not handled by this API.
*
* @publicApi
*/
export declare function animateChild(options?: AnimateChildOptions | null): AnimationAnimateChildMetadata;
/**
* Adds duration options to control animation styling and timing for a child animation.
*
* @see `animateChild()`
*
* @publicApi
*/
export declare interface AnimateChildOptions extends AnimationOptions {
duration?: number | string;
}
/**
* Represents animation-step timing parameters for an animation step.
* @see `animate()`
*
* @publicApi
*/
export declare type AnimateTimings = {
/**
* The full duration of an animation step. A number and optional time unit,
* such as "1s" or "10ms" for one second and 10 milliseconds, respectively.
* The default unit is milliseconds.
*/
duration: number;
/**
* The delay in applying an animation step. A number and optional time unit.
* The default unit is milliseconds.
*/
delay: number;
/**
* An easing style that controls how an animations step accelerates
* and decelerates during its run time. An easing function such as `cubic-bezier()`,
* or one of the following constants:
* - `ease-in`
* - `ease-out`
* - `ease-in-and-out`
*/
easing: string | null;
};
/**
* Produces a reusable animation that can be invoked in another animation or sequence,
* by calling the `useAnimation()` function.
*
* @param steps One or more animation objects, as returned by the `animate()`
* or `sequence()` function, that form a transformation from one state to another.
* A sequence is used by default when you pass an array.
* @param options An options object that can contain a delay value for the start of the
* animation, and additional developer-defined parameters.
* Provided values for additional parameters are used as defaults,
* and override values can be passed to the caller on invocation.
* @returns An object that encapsulates the animation data.
*
* @usageNotes
* The following example defines a reusable animation, providing some default parameter
* values.
*
* ```typescript
* var fadeAnimation = animation([
* style({ opacity: '{{ start }}' }),
* animate('{{ time }}',
* style({ opacity: '{{ end }}'}))
* ],
* { params: { time: '1000ms', start: 0, end: 1 }});
* ```
*
* The following invokes the defined animation with a call to `useAnimation()`,
* passing in override parameter values.
*
* ```js
* useAnimation(fadeAnimation, {
* params: {
* time: '2s',
* start: 1,
* end: 0
* }
* })
* ```
*
* If any of the passed-in parameter values are missing from this call,
* the default values are used. If one or more parameter values are missing before a step is
* animated, `useAnimation()` throws an error.
*
* @publicApi
*/
export declare function animation(steps: AnimationMetadata | AnimationMetadata[], options?: AnimationOptions | null): AnimationReferenceMetadata;
/**
* Encapsulates a child animation, that can be run explicitly when the parent is run.
* Instantiated and returned by the `animateChild` function.
*
* @publicApi
*/
export declare interface AnimationAnimateChildMetadata extends AnimationMetadata {
/**
* An options object containing a delay and
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation. Default delay is 0.
*/
options: AnimationOptions | null;
}
/**
* Encapsulates an animation step. Instantiated and returned by
* the `animate()` function.
*
* @publicApi
*/
export declare interface AnimationAnimateMetadata extends AnimationMetadata {
/**
* The timing data for the step.
*/
timings: string | number | AnimateTimings;
/**
* A set of styles used in the step.
*/
styles: AnimationStyleMetadata | AnimationKeyframesSequenceMetadata | null;
}
/**
* Encapsulates a reusable animation.
* Instantiated and returned by the `useAnimation()` function.
*
* @publicApi
*/
export declare interface AnimationAnimateRefMetadata extends AnimationMetadata {
/**
* An animation reference object.
*/
animation: AnimationReferenceMetadata;
/**
* An options object containing a delay and
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation. Default delay is 0.
*/
options: AnimationOptions | null;
}
/**
* An injectable service that produces an animation sequence programmatically within an
* Angular component or directive.
* Provided by the `BrowserAnimationsModule` or `NoopAnimationsModule`.
*
* @usageNotes
*
* To use this service, add it to your component or directive as a dependency.
* The service is instantiated along with your component.
*
* Apps do not typically need to create their own animation players, but if you
* do need to, follow these steps:
*
* 1. Use the `build()` method to create a programmatic animation using the
* `animate()` function. The method returns an `AnimationFactory` instance.
*
* 2. Use the factory object to create an `AnimationPlayer` and attach it to a DOM element.
*
* 3. Use the player object to control the animation programmatically.
*
* For example:
*
* ```ts
* // import the service from BrowserAnimationsModule
* import {AnimationBuilder} from '@angular/animations';
* // require the service as a dependency
* class MyCmp {
* constructor(private _builder: AnimationBuilder) {}
*
* makeAnimation(element: any) {
* // first define a reusable animation
* const myAnimation = this._builder.build([
* style({ width: 0 }),
* animate(1000, style({ width: '100px' }))
* ]);
*
* // use the returned factory object to create a player
* const player = myAnimation.create(element);
*
* player.play();
* }
* }
* ```
*
* @publicApi
*/
export declare abstract class AnimationBuilder {
/**
* Builds a factory for producing a defined animation.
* @param animation A reusable animation definition.
* @returns A factory object that can create a player for the defined animation.
* @see `animate()`
*/
abstract build(animation: AnimationMetadata | AnimationMetadata[]): AnimationFactory;
}
/**
* An instance of this class is returned as an event parameter when an animation
* callback is captured for an animation either during the start or done phase.
*
* ```typescript
* @Component({
* host: {
* '[@myAnimationTrigger]': 'someExpression',
* '(@myAnimationTrigger.start)': 'captureStartEvent($event)',
* '(@myAnimationTrigger.done)': 'captureDoneEvent($event)',
* },
* animations: [
* trigger("myAnimationTrigger", [
* // ...
* ])
* ]
* })
* class MyComponent {
* someExpression: any = false;
* captureStartEvent(event: AnimationEvent) {
* // the toState, fromState and totalTime data is accessible from the event variable
* }
*
* captureDoneEvent(event: AnimationEvent) {
* // the toState, fromState and totalTime data is accessible from the event variable
* }
* }
* ```
*
* @publicApi
*/
declare interface AnimationEvent_2 {
/**
* The name of the state from which the animation is triggered.
*/
fromState: string;
/**
* The name of the state in which the animation completes.
*/
toState: string;
/**
* The time it takes the animation to complete, in milliseconds.
*/
totalTime: number;
/**
* The animation phase in which the callback was invoked, one of
* "start" or "done".
*/
phaseName: string;
/**
* The element to which the animation is attached.
*/
element: any;
/**
* Internal.
*/
triggerName: string;
/**
* Internal.
*/
disabled: boolean;
}
export { AnimationEvent_2 as AnimationEvent }
/**
* A factory object returned from the `AnimationBuilder`.`build()` method.
*
* @publicApi
*/
export declare abstract class AnimationFactory {
/**
* Creates an `AnimationPlayer` instance for the reusable animation defined by
* the `AnimationBuilder`.`build()` method that created this factory.
* Attaches the new player a DOM element.
* @param element The DOM element to which to attach the animation.
* @param options A set of options that can include a time delay and
* additional developer-defined parameters.
*/
abstract create(element: any, options?: AnimationOptions): AnimationPlayer;
}
/**
* Encapsulates an animation group.
* Instantiated and returned by the `{@link animations/group group()}` function.
*
* @publicApi
*/
export declare interface AnimationGroupMetadata extends AnimationMetadata {
/**
* One or more animation or style steps that form this group.
*/
steps: AnimationMetadata[];
/**
* An options object containing a delay and
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation. Default delay is 0.
*/
options: AnimationOptions | null;
}
/**
* Encapsulates a keyframes sequence. Instantiated and returned by
* the `keyframes()` function.
*
* @publicApi
*/
export declare interface AnimationKeyframesSequenceMetadata extends AnimationMetadata {
/**
* An array of animation styles.
*/
steps: AnimationStyleMetadata[];
}
/**
* Base for animation data structures.
*
* @publicApi
*/
export declare interface AnimationMetadata {
type: AnimationMetadataType;
}
/**
* @description Constants for the categories of parameters that can be defined for animations.
*
* A corresponding function defines a set of parameters for each category, and
* collects them into a corresponding `AnimationMetadata` object.
*
* @publicApi
*/
export declare const enum AnimationMetadataType {
/**
* Associates a named animation state with a set of CSS styles.
* See `state()`
*/
State = 0,
/**
* Data for a transition from one animation state to another.
* See `transition()`
*/
Transition = 1,
/**
* Contains a set of animation steps.
* See `sequence()`
*/
Sequence = 2,
/**
* Contains a set of animation steps.
* See `{@link animations/group group()}`
*/
Group = 3,
/**
* Contains an animation step.
* See `animate()`
*/
Animate = 4,
/**
* Contains a set of animation steps.
* See `keyframes()`
*/
Keyframes = 5,
/**
* Contains a set of CSS property-value pairs into a named style.
* See `style()`
*/
Style = 6,
/**
* Associates an animation with an entry trigger that can be attached to an element.
* See `trigger()`
*/
Trigger = 7,
/**
* Contains a re-usable animation.
* See `animation()`
*/
Reference = 8,
/**
* Contains data to use in executing child animations returned by a query.
* See `animateChild()`
*/
AnimateChild = 9,
/**
* Contains animation parameters for a re-usable animation.
* See `useAnimation()`
*/
AnimateRef = 10,
/**
* Contains child-animation query data.
* See `query()`
*/
Query = 11,
/**
* Contains data for staggering an animation sequence.
* See `stagger()`
*/
Stagger = 12
}
/**
* @description Options that control animation styling and timing.
*
* The following animation functions accept `AnimationOptions` data:
*
* - `transition()`
* - `sequence()`
* - `{@link animations/group group()}`
* - `query()`
* - `animation()`
* - `useAnimation()`
* - `animateChild()`
*
* Programmatic animations built using the `AnimationBuilder` service also
* make use of `AnimationOptions`.
*
* @publicApi
*/
export declare interface AnimationOptions {
/**
* Sets a time-delay for initiating an animation action.
* A number and optional time unit, such as "1s" or "10ms" for one second
* and 10 milliseconds, respectively.The default unit is milliseconds.
* Default value is 0, meaning no delay.
*/
delay?: number | string;
/**
* A set of developer-defined parameters that modify styling and timing
* when an animation action starts. An array of key-value pairs, where the provided value
* is used as a default.
*/
params?: {
[name: string]: any;
};
}
/**
* Provides programmatic control of a reusable animation sequence,
* built using the `build()` method of `AnimationBuilder`. The `build()` method
* returns a factory, whose `create()` method instantiates and initializes this interface.
*
* @see `AnimationBuilder`
* @see `AnimationFactory`
* @see `animate()`
*
* @publicApi
*/
export declare interface AnimationPlayer {
/**
* Provides a callback to invoke when the animation finishes.
* @param fn The callback function.
* @see `finish()`
*/
onDone(fn: () => void): void;
/**
* Provides a callback to invoke when the animation starts.
* @param fn The callback function.
* @see `run()`
*/
onStart(fn: () => void): void;
/**
* Provides a callback to invoke after the animation is destroyed.
* @param fn The callback function.
* @see `destroy()`
* @see `beforeDestroy()`
*/
onDestroy(fn: () => void): void;
/**
* Initializes the animation.
*/
init(): void;
/**
* Reports whether the animation has started.
* @returns True if the animation has started, false otherwise.
*/
hasStarted(): boolean;
/**
* Runs the animation, invoking the `onStart()` callback.
*/
play(): void;
/**
* Pauses the animation.
*/
pause(): void;
/**
* Restarts the paused animation.
*/
restart(): void;
/**
* Ends the animation, invoking the `onDone()` callback.
*/
finish(): void;
/**
* Destroys the animation, after invoking the `beforeDestroy()` callback.
* Calls the `onDestroy()` callback when destruction is completed.
*/
destroy(): void;
/**
* Resets the animation to its initial state.
*/
reset(): void;
/**
* Sets the position of the animation.
* @param position A 0-based offset into the duration, in milliseconds.
*/
setPosition(position: any /** TODO #9100 */): void;
/**
* Reports the current position of the animation.
* @returns A 0-based offset into the duration, in milliseconds.
*/
getPosition(): number;
/**
* The parent of this player, if any.
*/
parentPlayer: AnimationPlayer | null;
/**
* The total run time of the animation, in milliseconds.
*/
readonly totalTime: number;
/**
* Provides a callback to invoke before the animation is destroyed.
*/
beforeDestroy?: () => any;
}
/**
* Encapsulates an animation query. Instantiated and returned by
* the `query()` function.
*
* @publicApi
*/
export declare interface AnimationQueryMetadata extends AnimationMetadata {
/**
* The CSS selector for this query.
*/
selector: string;
/**
* One or more animation step objects.
*/
animation: AnimationMetadata | AnimationMetadata[];
/**
* A query options object.
*/
options: AnimationQueryOptions | null;
}
/**
* Encapsulates animation query options.
* Passed to the `query()` function.
*
* @publicApi
*/
export declare interface AnimationQueryOptions extends AnimationOptions {
/**
* True if this query is optional, false if it is required. Default is false.
* A required query throws an error if no elements are retrieved when
* the query is executed. An optional query does not.
*
*/
optional?: boolean;
/**
* A maximum total number of results to return from the query.
* If negative, results are limited from the end of the query list towards the beginning.
* By default, results are not limited.
*/
limit?: number;
}
/**
* Encapsulates a reusable animation, which is a collection of individual animation steps.
* Instantiated and returned by the `animation()` function, and
* passed to the `useAnimation()` function.
*
* @publicApi
*/
export declare interface AnimationReferenceMetadata extends AnimationMetadata {
/**
* One or more animation step objects.
*/
animation: AnimationMetadata | AnimationMetadata[];
/**
* An options object containing a delay and
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation. Default delay is 0.
*/
options: AnimationOptions | null;
}
/**
* Encapsulates an animation sequence.
* Instantiated and returned by the `sequence()` function.
*
* @publicApi
*/
export declare interface AnimationSequenceMetadata extends AnimationMetadata {
/**
* An array of animation step objects.
*/
steps: AnimationMetadata[];
/**
* An options object containing a delay and
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation. Default delay is 0.
*/
options: AnimationOptions | null;
}
/**
* Encapsulates parameters for staggering the start times of a set of animation steps.
* Instantiated and returned by the `stagger()` function.
*
* @publicApi
**/
export declare interface AnimationStaggerMetadata extends AnimationMetadata {
/**
* The timing data for the steps.
*/
timings: string | number;
/**
* One or more animation steps.
*/
animation: AnimationMetadata | AnimationMetadata[];
}
/**
* Encapsulates an animation state by associating a state name with a set of CSS styles.
* Instantiated and returned by the `state()` function.
*
* @publicApi
*/
export declare interface AnimationStateMetadata extends AnimationMetadata {
/**
* The state name, unique within the component.
*/
name: string;
/**
* The CSS styles associated with this state.
*/
styles: AnimationStyleMetadata;
/**
* An options object containing
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation.
*/
options?: {
params: {
[name: string]: any;
};
};
}
/**
* Encapsulates an animation style. Instantiated and returned by
* the `style()` function.
*
* @publicApi
*/
export declare interface AnimationStyleMetadata extends AnimationMetadata {
/**
* A set of CSS style properties.
*/
styles: '*' | {
[key: string]: string | number;
} | Array<{
[key: string]: string | number;
} | '*'>;
/**
* A percentage of the total animate time at which the style is to be applied.
*/
offset: number | null;
}
/**
* Encapsulates an animation transition. Instantiated and returned by the
* `transition()` function.
*
* @publicApi
*/
export declare interface AnimationTransitionMetadata extends AnimationMetadata {
/**
* An expression that describes a state change.
*/
expr: string | ((fromState: string, toState: string, element?: any, params?: {
[key: string]: any;
}) => boolean);
/**
* One or more animation objects to which this transition applies.
*/
animation: AnimationMetadata | AnimationMetadata[];
/**
* An options object containing a delay and
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation. Default delay is 0.
*/
options: AnimationOptions | null;
}
/**
* Contains an animation trigger. Instantiated and returned by the
* `trigger()` function.
*
* @publicApi
*/
export declare interface AnimationTriggerMetadata extends AnimationMetadata {
/**
* The trigger name, used to associate it with an element. Unique within the component.
*/
name: string;
/**
* An animation definition object, containing an array of state and transition declarations.
*/
definitions: AnimationMetadata[];
/**
* An options object containing a delay and
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation. Default delay is 0.
*/
options: {
params?: {
[name: string]: any;
};
} | null;
}
/**
* Specifies automatic styling.
*
* @publicApi
*/
export declare const AUTO_STYLE = "*";
/**
* @description Defines a list of animation steps to be run in parallel.
*
* @param steps An array of animation step objects.
* - When steps are defined by `style()` or `animate()`
* function calls, each call within the group is executed instantly.
* - To specify offset styles to be applied at a later time, define steps with
* `keyframes()`, or use `animate()` calls with a delay value.
* For example:
*
* ```typescript
* group([
* animate("1s", style({ background: "black" })),
* animate("2s", style({ color: "white" }))
* ])
* ```
*
* @param options An options object containing a delay and
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation.
*
* @return An object that encapsulates the group data.
*
* @usageNotes
* Grouped animations are useful when a series of styles must be
* animated at different starting times and closed off at different ending times.
*
* When called within a `sequence()` or a
* `transition()` call, does not continue to the next
* instruction until all of the inner animation steps have completed.
*
* @publicApi
*/
export declare function group(steps: AnimationMetadata[], options?: AnimationOptions | null): AnimationGroupMetadata;
/**
* Defines a set of animation styles, associating each style with an optional `offset` value.
*
* @param steps A set of animation styles with optional offset data.
* The optional `offset` value for a style specifies a percentage of the total animation
* time at which that style is applied.
* @returns An object that encapsulates the keyframes data.
*
* @usageNotes
* Use with the `animate()` call. Instead of applying animations
* from the current state
* to the destination state, keyframes describe how each style entry is applied and at what point
* within the animation arc.
* Compare [CSS Keyframe Animations](https://www.w3schools.com/css/css3_animations.asp).
*
* ### Usage
*
* In the following example, the offset values describe
* when each `backgroundColor` value is applied. The color is red at the start, and changes to
* blue when 20% of the total time has elapsed.
*
* ```typescript
* // the provided offset values
* animate("5s", keyframes([
* style({ backgroundColor: "red", offset: 0 }),
* style({ backgroundColor: "blue", offset: 0.2 }),
* style({ backgroundColor: "orange", offset: 0.3 }),
* style({ backgroundColor: "black", offset: 1 })
* ]))
* ```
*
* If there are no `offset` values specified in the style entries, the offsets
* are calculated automatically.
*
* ```typescript
* animate("5s", keyframes([
* style({ backgroundColor: "red" }) // offset = 0
* style({ backgroundColor: "blue" }) // offset = 0.33
* style({ backgroundColor: "orange" }) // offset = 0.66
* style({ backgroundColor: "black" }) // offset = 1
* ]))
*```
* @publicApi
*/
export declare function keyframes(steps: AnimationStyleMetadata[]): AnimationKeyframesSequenceMetadata;
/**
* An empty programmatic controller for reusable animations.
* Used internally when animations are disabled, to avoid
* checking for the null case when an animation player is expected.
*
* @see `animate()`
* @see `AnimationPlayer`
* @see `GroupPlayer`
*
* @publicApi
*/
export declare class NoopAnimationPlayer implements AnimationPlayer {
private _onDoneFns;
private _onStartFns;
private _onDestroyFns;
private _started;
private _destroyed;
private _finished;
private _position;
parentPlayer: AnimationPlayer | null;
readonly totalTime: number;
constructor(duration?: number, delay?: number);
private _onFinish;
onStart(fn: () => void): void;
onDone(fn: () => void): void;
onDestroy(fn: () => void): void;
hasStarted(): boolean;
init(): void;
play(): void;
private _onStart;
pause(): void;
restart(): void;
finish(): void;
destroy(): void;
reset(): void;
setPosition(position: number): void;
getPosition(): number;
}
/**
* Finds one or more inner elements within the current element that is
* being animated within a sequence. Use with `animate()`.
*
* @param selector The element to query, or a set of elements that contain Angular-specific
* characteristics, specified with one or more of the following tokens.
* - `query(":enter")` or `query(":leave")` : Query for newly inserted/removed elements.
* - `query(":animating")` : Query all currently animating elements.
* - `query("@triggerName")` : Query elements that contain an animation trigger.
* - `query("@*")` : Query all elements that contain an animation triggers.
* - `query(":self")` : Include the current element into the animation sequence.
*
* @param animation One or more animation steps to apply to the queried element or elements.
* An array is treated as an animation sequence.
* @param options An options object. Use the 'limit' field to limit the total number of
* items to collect.
* @return An object that encapsulates the query data.
*
* @usageNotes
* Tokens can be merged into a combined query selector string. For example:
*
* ```typescript
* query(':self, .record:enter, .record:leave, @subTrigger', [...])
* ```
*
* The `query()` function collects multiple elements and works internally by using
* `element.querySelectorAll`. Use the `limit` field of an options object to limit
* the total number of items to be collected. For example:
*
* ```js
* query('div', [
* animate(...),
* animate(...)
* ], { limit: 1 })
* ```
*
* By default, throws an error when zero items are found. Set the
* `optional` flag to ignore this error. For example:
*
* ```js
* query('.some-element-that-may-not-be-there', [
* animate(...),
* animate(...)
* ], { optional: true })
* ```
*
* ### Usage Example
*
* The following example queries for inner elements and animates them
* individually using `animate()`.
*
* ```typescript
* @Component({
* selector: 'inner',
* template: `
*
*
Title
*
* Blah blah blah
*
*
* `,
* animations: [
* trigger('queryAnimation', [
* transition('* => goAnimate', [
* // hide the inner elements
* query('h1', style({ opacity: 0 })),
* query('.content', style({ opacity: 0 })),
*
* // animate the inner elements in, one by one
* query('h1', animate(1000, style({ opacity: 1 }))),
* query('.content', animate(1000, style({ opacity: 1 }))),
* ])
* ])
* ]
* })
* class Cmp {
* exp = '';
*
* goAnimate() {
* this.exp = 'goAnimate';
* }
* }
* ```
*
* @publicApi
*/
export declare function query(selector: string, animation: AnimationMetadata | AnimationMetadata[], options?: AnimationQueryOptions | null): AnimationQueryMetadata;
/**
* Defines a list of animation steps to be run sequentially, one by one.
*
* @param steps An array of animation step objects.
* - Steps defined by `style()` calls apply the styling data immediately.
* - Steps defined by `animate()` calls apply the styling data over time
* as specified by the timing data.
*
* ```typescript
* sequence([
* style({ opacity: 0 }),
* animate("1s", style({ opacity: 1 }))
* ])
* ```
*
* @param options An options object containing a delay and
* developer-defined parameters that provide styling defaults and
* can be overridden on invocation.
*
* @return An object that encapsulates the sequence data.
*
* @usageNotes
* When you pass an array of steps to a
* `transition()` call, the steps run sequentially by default.
* Compare this to the `{@link animations/group group()}` call, which runs animation steps in
*parallel.
*
* When a sequence is used within a `{@link animations/group group()}` or a `transition()` call,
* execution continues to the next instruction only after each of the inner animation
* steps have completed.
*
* @publicApi
**/
export declare function sequence(steps: AnimationMetadata[], options?: AnimationOptions | null): AnimationSequenceMetadata;
/**
* Use within an animation `query()` call to issue a timing gap after
* each queried item is animated.
*
* @param timings A delay value.
* @param animation One ore more animation steps.
* @returns An object that encapsulates the stagger data.
*
* @usageNotes
* In the following example, a container element wraps a list of items stamped out
* by an `ngFor`. The container element contains an animation trigger that will later be set
* to query for each of the inner items.
*
* Each time items are added, the opacity fade-in animation runs,
* and each removed item is faded out.
* When either of these animations occur, the stagger effect is
* applied after each item's animation is started.
*
* ```html
*
*
*
*
*
* {{ item }}
*
*
* ```
*
* Here is the component code:
*
* ```typescript
* import {trigger, transition, style, animate, query, stagger} from '@angular/animations';
* @Component({
* templateUrl: 'list.component.html',
* animations: [
* trigger('listAnimation', [
* ...
* ])
* ]
* })
* class ListComponent {
* items = [];
*
* showItems() {
* this.items = [0,1,2,3,4];
* }
*
* hideItems() {
* this.items = [];
* }
*
* toggle() {
* this.items.length ? this.hideItems() : this.showItems();
* }
* }
* ```
*
* Here is the animation trigger code:
*
* ```typescript
* trigger('listAnimation', [
* transition('* => *', [ // each time the binding value changes
* query(':leave', [
* stagger(100, [
* animate('0.5s', style({ opacity: 0 }))
* ])
* ]),
* query(':enter', [
* style({ opacity: 0 }),
* stagger(100, [
* animate('0.5s', style({ opacity: 1 }))
* ])
* ])
* ])
* ])
* ```
*
* @publicApi
*/
export declare function stagger(timings: string | number, animation: AnimationMetadata | AnimationMetadata[]): AnimationStaggerMetadata;
/**
* Declares an animation state within a trigger attached to an element.
*
* @param name One or more names for the defined state in a comma-separated string.
* The following reserved state names can be supplied to define a style for specific use
* cases:
*
* - `void` You can associate styles with this name to be used when
* the element is detached from the application. For example, when an `ngIf` evaluates
* to false, the state of the associated element is void.
* - `*` (asterisk) Indicates the default state. You can associate styles with this name
* to be used as the fallback when the state that is being animated is not declared
* within the trigger.
*
* @param styles A set of CSS styles associated with this state, created using the
* `style()` function.
* This set of styles persists on the element once the state has been reached.
* @param options Parameters that can be passed to the state when it is invoked.
* 0 or more key-value pairs.
* @return An object that encapsulates the new state data.
*
* @usageNotes
* Use the `trigger()` function to register states to an animation trigger.
* Use the `transition()` function to animate between states.
* When a state is active within a component, its associated styles persist on the element,
* even when the animation ends.
*
* @publicApi
**/
export declare function state(name: string, styles: AnimationStyleMetadata, options?: {
params: {
[name: string]: any;
};
}): AnimationStateMetadata;
/**
* Declares a key/value object containing CSS properties/styles that
* can then be used for an animation `state`, within an animation `sequence`,
* or as styling data for calls to `animate()` and `keyframes()`.
*
* @param tokens A set of CSS styles or HTML styles associated with an animation state.
* The value can be any of the following:
* - A key-value style pair associating a CSS property with a value.
* - An array of key-value style pairs.
* - An asterisk (*), to use auto-styling, where styles are derived from the element
* being animated and applied to the animation when it starts.
*
* Auto-styling can be used to define a state that depends on layout or other
* environmental factors.
*
* @return An object that encapsulates the style data.
*
* @usageNotes
* The following examples create animation styles that collect a set of
* CSS property values:
*
* ```typescript
* // string values for CSS properties
* style({ background: "red", color: "blue" })
*
* // numerical pixel values
* style({ width: 100, height: 0 })
* ```
*
* The following example uses auto-styling to allow a component to animate from
* a height of 0 up to the height of the parent element:
*
* ```
* style({ height: 0 }),
* animate("1s", style({ height: "*" }))
* ```
*
* @publicApi
**/
export declare function style(tokens: '*' | {
[key: string]: string | number;
} | Array<'*' | {
[key: string]: string | number;
}>): AnimationStyleMetadata;
/**
* Declares an animation transition as a sequence of animation steps to run when a given
* condition is satisfied. The condition is a Boolean expression or function that compares
* the previous and current animation states, and returns true if this transition should occur.
* When the state criteria of a defined transition are met, the associated animation is
* triggered.
*
* @param stateChangeExpr A Boolean expression or function that compares the previous and current
* animation states, and returns true if this transition should occur. Note that "true" and "false"
* match 1 and 0, respectively. An expression is evaluated each time a state change occurs in the
* animation trigger element.
* The animation steps run when the expression evaluates to true.
*
* - A state-change string takes the form "state1 => state2", where each side is a defined animation
* state, or an asterix (*) to refer to a dynamic start or end state.
* - The expression string can contain multiple comma-separated statements;
* for example "state1 => state2, state3 => state4".
* - Special values `:enter` and `:leave` initiate a transition on the entry and exit states,
* equivalent to "void => *" and "* => void".
* - Special values `:increment` and `:decrement` initiate a transition when a numeric value has
* increased or decreased in value.
* - A function is executed each time a state change occurs in the animation trigger element.
* The animation steps run when the function returns true.
*
* @param steps One or more animation objects, as returned by the `animate()` or
* `sequence()` function, that form a transformation from one state to another.
* A sequence is used by default when you pass an array.
* @param options An options object that can contain a delay value for the start of the animation,
* and additional developer-defined parameters. Provided values for additional parameters are used
* as defaults, and override values can be passed to the caller on invocation.
* @returns An object that encapsulates the transition data.
*
* @usageNotes
* The template associated with a component binds an animation trigger to an element.
*
* ```HTML
*
*
...
* ```
*
* All transitions are defined within an animation trigger,
* along with named states that the transitions change to and from.
*
* ```typescript
* trigger("myAnimationTrigger", [
* // define states
* state("on", style({ background: "green" })),
* state("off", style({ background: "grey" })),
* ...]
* ```
*
* Note that when you call the `sequence()` function within a `{@link animations/group group()}`
* or a `transition()` call, execution does not continue to the next instruction
* until each of the inner animation steps have completed.
*
* ### Syntax examples
*
* The following examples define transitions between the two defined states (and default states),
* using various options:
*
* ```typescript
* // Transition occurs when the state value
* // bound to "myAnimationTrigger" changes from "on" to "off"
* transition("on => off", animate(500))
* // Run the same animation for both directions
* transition("on <=> off", animate(500))
* // Define multiple state-change pairs separated by commas
* transition("on => off, off => void", animate(500))
* ```
*
* ### Special values for state-change expressions
*
* - Catch-all state change for when an element is inserted into the page and the
* destination state is unknown:
*
* ```typescript
* transition("void => *", [
* style({ opacity: 0 }),
* animate(500)
* ])
* ```
*
* - Capture a state change between any states:
*
* `transition("* => *", animate("1s 0s"))`
*
* - Entry and exit transitions:
*
* ```typescript
* transition(":enter", [
* style({ opacity: 0 }),
* animate(500, style({ opacity: 1 }))
* ]),
* transition(":leave", [
* animate(500, style({ opacity: 0 }))
* ])
* ```
*
* - Use `:increment` and `:decrement` to initiate transitions:
*
* ```typescript
* transition(":increment", group([
* query(':enter', [
* style({ left: '100%' }),
* animate('0.5s ease-out', style('*'))
* ]),
* query(':leave', [
* animate('0.5s ease-out', style({ left: '-100%' }))
* ])
* ]))
*
* transition(":decrement", group([
* query(':enter', [
* style({ left: '100%' }),
* animate('0.5s ease-out', style('*'))
* ]),
* query(':leave', [
* animate('0.5s ease-out', style({ left: '-100%' }))
* ])
* ]))
* ```
*
* ### State-change functions
*
* Here is an example of a `fromState` specified as a state-change function that invokes an
* animation when true:
*
* ```typescript
* transition((fromState, toState) =>
* {
* return fromState == "off" && toState == "on";
* },
* animate("1s 0s"))
* ```
*
* ### Animating to the final state
*
* If the final step in a transition is a call to `animate()` that uses a timing value
* with no style data, that step is automatically considered the final animation arc,
* for the element to reach the final state. Angular automatically adds or removes
* CSS styles to ensure that the element is in the correct final state.
*
* The following example defines a transition that starts by hiding the element,
* then makes sure that it animates properly to whatever state is currently active for trigger:
*
* ```typescript
* transition("void => *", [
* style({ opacity: 0 }),
* animate(500)
* ])
* ```
* ### Boolean value matching
* If a trigger binding value is a Boolean, it can be matched using a transition expression
* that compares true and false or 1 and 0. For example:
*
* ```
* // in the template
*
...
* // in the component metadata
* trigger('openClose', [
* state('true', style({ height: '*' })),
* state('false', style({ height: '0px' })),
* transition('false <=> true', animate(500))
* ])
* ```
*
* @publicApi
**/
export declare function transition(stateChangeExpr: string | ((fromState: string, toState: string, element?: any, params?: {
[key: string]: any;
}) => boolean), steps: AnimationMetadata | AnimationMetadata[], options?: AnimationOptions | null): AnimationTransitionMetadata;
/**
* Creates a named animation trigger, containing a list of `state()`
* and `transition()` entries to be evaluated when the expression
* bound to the trigger changes.
*
* @param name An identifying string.
* @param definitions An animation definition object, containing an array of `state()`
* and `transition()` declarations.
*
* @return An object that encapsulates the trigger data.
*
* @usageNotes
* Define an animation trigger in the `animations` section of `@Component` metadata.
* In the template, reference the trigger by name and bind it to a trigger expression that
* evaluates to a defined animation state, using the following format:
*
* `[@triggerName]="expression"`
*
* Animation trigger bindings convert all values to strings, and then match the
* previous and current values against any linked transitions.
* Booleans can be specified as `1` or `true` and `0` or `false`.
*
* ### Usage Example
*
* The following example creates an animation trigger reference based on the provided
* name value.
* The provided animation value is expected to be an array consisting of state and
* transition declarations.
*
* ```typescript
* @Component({
* selector: "my-component",
* templateUrl: "my-component-tpl.html",
* animations: [
* trigger("myAnimationTrigger", [
* state(...),
* state(...),
* transition(...),
* transition(...)
* ])
* ]
* })
* class MyComponent {
* myStatusExp = "something";
* }
* ```
*
* The template associated with this component makes use of the defined trigger
* by binding to an element within its template code.
*
* ```html
*
*
...
* ```
*
* ### Using an inline function
* The `transition` animation method also supports reading an inline function which can decide
* if its associated animation should be run.
*
* ```typescript
* // this method is run each time the `myAnimationTrigger` trigger value changes.
* function myInlineMatcherFn(fromState: string, toState: string, element: any, params: {[key:
string]: any}): boolean {
* // notice that `element` and `params` are also available here
* return toState == 'yes-please-animate';
* }
*
* @Component({
* selector: 'my-component',
* templateUrl: 'my-component-tpl.html',
* animations: [
* trigger('myAnimationTrigger', [
* transition(myInlineMatcherFn, [
* // the animation sequence code
* ]),
* ])
* ]
* })
* class MyComponent {
* myStatusExp = "yes-please-animate";
* }
* ```
*
* ### Disabling Animations
* When true, the special animation control binding `@.disabled` binding prevents
* all animations from rendering.
* Place the `@.disabled` binding on an element to disable
* animations on the element itself, as well as any inner animation triggers
* within the element.
*
* The following example shows how to use this feature:
*
* ```typescript
* @Component({
* selector: 'my-component',
* template: `
*
*
*
* `,
* animations: [
* trigger("childAnimation", [
* // ...
* ])
* ]
* })
* class MyComponent {
* isDisabled = true;
* exp = '...';
* }
* ```
*
* When `@.disabled` is true, it prevents the `@childAnimation` trigger from animating,
* along with any inner animations.
*
* ### Disable animations application-wide
* When an area of the template is set to have animations disabled,
* **all** inner components have their animations disabled as well.
* This means that you can disable all animations for an app
* by placing a host binding set on `@.disabled` on the topmost Angular component.
*
* ```typescript
* import {Component, HostBinding} from '@angular/core';
*
* @Component({
* selector: 'app-component',
* templateUrl: 'app.component.html',
* })
* class AppComponent {
* @HostBinding('@.disabled')
* public animationsDisabled = true;
* }
* ```
*
* ### Overriding disablement of inner animations
* Despite inner animations being disabled, a parent animation can `query()`
* for inner elements located in disabled areas of the template and still animate
* them if needed. This is also the case for when a sub animation is
* queried by a parent and then later animated using `animateChild()`.
*
* ### Detecting when an animation is disabled
* If a region of the DOM (or the entire application) has its animations disabled, the animation
* trigger callbacks still fire, but for zero seconds. When the callback fires, it provides
* an instance of an `AnimationEvent`. If animations are disabled,
* the `.disabled` flag on the event is true.
*
* @publicApi
*/
export declare function trigger(name: string, definitions: AnimationMetadata[]): AnimationTriggerMetadata;
/**
* Starts a reusable animation that is created using the `animation()` function.
*
* @param animation The reusable animation to start.
* @param options An options object that can contain a delay value for the start of
* the animation, and additional override values for developer-defined parameters.
* @return An object that contains the animation parameters.
*
* @publicApi
*/
export declare function useAnimation(animation: AnimationReferenceMetadata, options?: AnimationOptions | null): AnimationAnimateRefMetadata;
/**
* A programmatic controller for a group of reusable animations.
* Used internally to control animations.
*
* @see `AnimationPlayer`
* @see `{@link animations/group group()}`
*
*/
export declare class ɵAnimationGroupPlayer implements AnimationPlayer {
private _onDoneFns;
private _onStartFns;
private _finished;
private _started;
private _destroyed;
private _onDestroyFns;
parentPlayer: AnimationPlayer | null;
totalTime: number;
readonly players: AnimationPlayer[];
constructor(_players: AnimationPlayer[]);
private _onFinish;
init(): void;
onStart(fn: () => void): void;
private _onStart;
onDone(fn: () => void): void;
onDestroy(fn: () => void): void;
hasStarted(): boolean;
play(): void;
pause(): void;
restart(): void;
finish(): void;
destroy(): void;
private _onDestroy;
reset(): void;
setPosition(p: number): void;
getPosition(): number;
beforeDestroy(): void;
}
export declare const ɵPRE_STYLE = "!";
/**
* Represents a set of CSS styles for use in an animation style.
*/
export declare interface ɵStyleData {
[key: string]: string | number;
}
export { }