@angular/material
Version:
Angular Material
1,173 lines (1,172 loc) • 54.2 kB
JavaScript
import { DOCUMENT, CommonModule } from '@angular/common';
import { forwardRef, EventEmitter, Component, ViewEncapsulation, ChangeDetectionStrategy, ElementRef, ChangeDetectorRef, Optional, Attribute, Inject, NgZone, Input, Output, ViewChild, NgModule } from '@angular/core';
import { mixinTabIndex, mixinColor, mixinDisabled, MatCommonModule } from '@angular/material/core';
import { FocusMonitor } from '@angular/cdk/a11y';
import { Directionality } from '@angular/cdk/bidi';
import { coerceBooleanProperty, coerceNumberProperty } from '@angular/cdk/coercion';
import { hasModifierKey, DOWN_ARROW, RIGHT_ARROW, UP_ARROW, LEFT_ARROW, HOME, END, PAGE_DOWN, PAGE_UP } from '@angular/cdk/keycodes';
import { NG_VALUE_ACCESSOR } from '@angular/forms';
import { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';
import { normalizePassiveListenerOptions } from '@angular/cdk/platform';
import { Subscription } from 'rxjs';
/**
* @fileoverview added by tsickle
* Generated from: src/material/slider/slider.ts
* @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/** @type {?} */
const activeEventOptions = normalizePassiveListenerOptions({ passive: false });
/**
* Visually, a 30px separation between tick marks looks best. This is very subjective but it is
* the default separation we chose.
* @type {?}
*/
const MIN_AUTO_TICK_SEPARATION = 30;
/**
* The thumb gap size for a disabled slider.
* @type {?}
*/
const DISABLED_THUMB_GAP = 7;
/**
* The thumb gap size for a non-active slider at its minimum value.
* @type {?}
*/
const MIN_VALUE_NONACTIVE_THUMB_GAP = 7;
/**
* The thumb gap size for an active slider at its minimum value.
* @type {?}
*/
const MIN_VALUE_ACTIVE_THUMB_GAP = 10;
/**
* Provider Expression that allows mat-slider to register as a ControlValueAccessor.
* This allows it to support [(ngModel)] and [formControl].
* \@docs-private
* @type {?}
*/
const MAT_SLIDER_VALUE_ACCESSOR = {
provide: NG_VALUE_ACCESSOR,
useExisting: forwardRef((/**
* @return {?}
*/
() => MatSlider)),
multi: true
};
/**
* A simple change event emitted by the MatSlider component.
*/
class MatSliderChange {
}
if (false) {
/**
* The MatSlider that changed.
* @type {?}
*/
MatSliderChange.prototype.source;
/**
* The new value of the source slider.
* @type {?}
*/
MatSliderChange.prototype.value;
}
// Boilerplate for applying mixins to MatSlider.
/**
* \@docs-private
*/
class MatSliderBase {
/**
* @param {?} _elementRef
*/
constructor(_elementRef) {
this._elementRef = _elementRef;
}
}
if (false) {
/** @type {?} */
MatSliderBase.prototype._elementRef;
}
/** @type {?} */
const _MatSliderMixinBase = mixinTabIndex(mixinColor(mixinDisabled(MatSliderBase), 'accent'));
/**
* Allows users to select from a range of values by moving the slider thumb. It is similar in
* behavior to the native `<input type="range">` element.
*/
class MatSlider extends _MatSliderMixinBase {
/**
* @param {?} elementRef
* @param {?} _focusMonitor
* @param {?} _changeDetectorRef
* @param {?} _dir
* @param {?} tabIndex
* @param {?=} _animationMode
* @param {?=} _ngZone
* @param {?=} document
*/
constructor(elementRef, _focusMonitor, _changeDetectorRef, _dir, tabIndex, _animationMode, _ngZone,
/** @breaking-change 11.0.0 make document required */
document) {
super(elementRef);
this._focusMonitor = _focusMonitor;
this._changeDetectorRef = _changeDetectorRef;
this._dir = _dir;
this._animationMode = _animationMode;
this._ngZone = _ngZone;
this._invert = false;
this._max = 100;
this._min = 0;
this._step = 1;
this._thumbLabel = false;
this._tickInterval = 0;
this._value = null;
this._vertical = false;
/**
* Event emitted when the slider value has changed.
*/
this.change = new EventEmitter();
/**
* Event emitted when the slider thumb moves.
*/
this.input = new EventEmitter();
/**
* Emits when the raw value of the slider changes. This is here primarily
* to facilitate the two-way binding for the `value` input.
* \@docs-private
*/
this.valueChange = new EventEmitter();
/**
* onTouch function registered via registerOnTouch (ControlValueAccessor).
*/
this.onTouched = (/**
* @return {?}
*/
() => { });
this._percent = 0;
/**
* Whether or not the thumb is sliding.
* Used to determine if there should be a transition for the thumb and fill track.
*/
this._isSliding = false;
/**
* Whether or not the slider is active (clicked or sliding).
* Used to shrink and grow the thumb as according to the Material Design spec.
*/
this._isActive = false;
/**
* The size of a tick interval as a percentage of the size of the track.
*/
this._tickIntervalPercent = 0;
/**
* The dimensions of the slider.
*/
this._sliderDimensions = null;
this._controlValueAccessorChangeFn = (/**
* @return {?}
*/
() => { });
/**
* Subscription to the Directionality change EventEmitter.
*/
this._dirChangeSubscription = Subscription.EMPTY;
/**
* Called when the user has put their pointer down on the slider.
*/
this._pointerDown = (/**
* @param {?} event
* @return {?}
*/
(event) => {
// Don't do anything if the slider is disabled or the
// user is using anything other than the main mouse button.
if (this.disabled || this._isSliding || (!isTouchEvent(event) && event.button !== 0)) {
return;
}
this._runInsideZone((/**
* @return {?}
*/
() => {
/** @type {?} */
const oldValue = this.value;
/** @type {?} */
const pointerPosition = getPointerPositionOnPage(event);
this._isSliding = true;
this._lastPointerEvent = event;
event.preventDefault();
this._focusHostElement();
this._onMouseenter(); // Simulate mouseenter in case this is a mobile device.
this._bindGlobalEvents(event);
this._focusHostElement();
this._updateValueFromPosition(pointerPosition);
this._valueOnSlideStart = this.value;
this._pointerPositionOnStart = pointerPosition;
// Emit a change and input event if the value changed.
if (oldValue != this.value) {
this._emitInputEvent();
this._emitChangeEvent();
}
}));
});
/**
* Called when the user has moved their pointer after
* starting to drag. Bound on the document level.
*/
this._pointerMove = (/**
* @param {?} event
* @return {?}
*/
(event) => {
if (this._isSliding) {
// Prevent the slide from selecting anything else.
event.preventDefault();
/** @type {?} */
const oldValue = this.value;
this._lastPointerEvent = event;
this._updateValueFromPosition(getPointerPositionOnPage(event));
// Native range elements always emit `input` events when the value changed while sliding.
if (oldValue != this.value) {
this._emitInputEvent();
}
}
});
/**
* Called when the user has lifted their pointer. Bound on the document level.
*/
this._pointerUp = (/**
* @param {?} event
* @return {?}
*/
(event) => {
if (this._isSliding) {
/** @type {?} */
const pointerPositionOnStart = this._pointerPositionOnStart;
/** @type {?} */
const currentPointerPosition = getPointerPositionOnPage(event);
event.preventDefault();
this._removeGlobalEvents();
this._valueOnSlideStart = this._pointerPositionOnStart = this._lastPointerEvent = null;
this._isSliding = false;
if (this._valueOnSlideStart != this.value && !this.disabled &&
pointerPositionOnStart && (pointerPositionOnStart.x !== currentPointerPosition.x ||
pointerPositionOnStart.y !== currentPointerPosition.y)) {
this._emitChangeEvent();
}
}
});
/**
* Called when the window has lost focus.
*/
this._windowBlur = (/**
* @return {?}
*/
() => {
// If the window is blurred while dragging we need to stop dragging because the
// browser won't dispatch the `mouseup` and `touchend` events anymore.
if (this._lastPointerEvent) {
this._pointerUp(this._lastPointerEvent);
}
});
this._document = document;
this.tabIndex = parseInt(tabIndex) || 0;
this._runOutsizeZone((/**
* @return {?}
*/
() => {
/** @type {?} */
const element = elementRef.nativeElement;
element.addEventListener('mousedown', this._pointerDown, activeEventOptions);
element.addEventListener('touchstart', this._pointerDown, activeEventOptions);
}));
}
/**
* Whether the slider is inverted.
* @return {?}
*/
get invert() { return this._invert; }
/**
* @param {?} value
* @return {?}
*/
set invert(value) {
this._invert = coerceBooleanProperty(value);
}
/**
* The maximum value that the slider can have.
* @return {?}
*/
get max() { return this._max; }
/**
* @param {?} v
* @return {?}
*/
set max(v) {
this._max = coerceNumberProperty(v, this._max);
this._percent = this._calculatePercentage(this._value);
// Since this also modifies the percentage, we need to let the change detection know.
this._changeDetectorRef.markForCheck();
}
/**
* The minimum value that the slider can have.
* @return {?}
*/
get min() { return this._min; }
/**
* @param {?} v
* @return {?}
*/
set min(v) {
this._min = coerceNumberProperty(v, this._min);
// If the value wasn't explicitly set by the user, set it to the min.
if (this._value === null) {
this.value = this._min;
}
this._percent = this._calculatePercentage(this._value);
// Since this also modifies the percentage, we need to let the change detection know.
this._changeDetectorRef.markForCheck();
}
/**
* The values at which the thumb will snap.
* @return {?}
*/
get step() { return this._step; }
/**
* @param {?} v
* @return {?}
*/
set step(v) {
this._step = coerceNumberProperty(v, this._step);
if (this._step % 1 !== 0) {
this._roundToDecimal = (/** @type {?} */ (this._step.toString().split('.').pop())).length;
}
// Since this could modify the label, we need to notify the change detection.
this._changeDetectorRef.markForCheck();
}
/**
* Whether or not to show the thumb label.
* @return {?}
*/
get thumbLabel() { return this._thumbLabel; }
/**
* @param {?} value
* @return {?}
*/
set thumbLabel(value) { this._thumbLabel = coerceBooleanProperty(value); }
/**
* How often to show ticks. Relative to the step so that a tick always appears on a step.
* Ex: Tick interval of 4 with a step of 3 will draw a tick every 4 steps (every 12 values).
* @return {?}
*/
get tickInterval() { return this._tickInterval; }
/**
* @param {?} value
* @return {?}
*/
set tickInterval(value) {
if (value === 'auto') {
this._tickInterval = 'auto';
}
else if (typeof value === 'number' || typeof value === 'string') {
this._tickInterval = coerceNumberProperty(value, (/** @type {?} */ (this._tickInterval)));
}
else {
this._tickInterval = 0;
}
}
/**
* Value of the slider.
* @return {?}
*/
get value() {
// If the value needs to be read and it is still uninitialized, initialize it to the min.
if (this._value === null) {
this.value = this._min;
}
return this._value;
}
/**
* @param {?} v
* @return {?}
*/
set value(v) {
if (v !== this._value) {
/** @type {?} */
let value = coerceNumberProperty(v);
// While incrementing by a decimal we can end up with values like 33.300000000000004.
// Truncate it to ensure that it matches the label and to make it easier to work with.
if (this._roundToDecimal) {
value = parseFloat(value.toFixed(this._roundToDecimal));
}
this._value = value;
this._percent = this._calculatePercentage(this._value);
// Since this also modifies the percentage, we need to let the change detection know.
this._changeDetectorRef.markForCheck();
}
}
/**
* Whether the slider is vertical.
* @return {?}
*/
get vertical() { return this._vertical; }
/**
* @param {?} value
* @return {?}
*/
set vertical(value) {
this._vertical = coerceBooleanProperty(value);
}
/**
* The value to be used for display purposes.
* @return {?}
*/
get displayValue() {
if (this.displayWith) {
// Value is never null but since setters and getters cannot have
// different types, the value getter is also typed to return null.
return this.displayWith((/** @type {?} */ (this.value)));
}
// Note that this could be improved further by rounding something like 0.999 to 1 or
// 0.899 to 0.9, however it is very performance sensitive, because it gets called on
// every change detection cycle.
if (this._roundToDecimal && this.value && this.value % 1 !== 0) {
return this.value.toFixed(this._roundToDecimal);
}
return this.value || 0;
}
/**
* set focus to the host element
* @param {?=} options
* @return {?}
*/
focus(options) {
this._focusHostElement(options);
}
/**
* blur the host element
* @return {?}
*/
blur() {
this._blurHostElement();
}
/**
* The percentage of the slider that coincides with the value.
* @return {?}
*/
get percent() { return this._clamp(this._percent); }
/**
* Whether the axis of the slider is inverted.
* (i.e. whether moving the thumb in the positive x or y direction decreases the slider's value).
* @return {?}
*/
get _invertAxis() {
// Standard non-inverted mode for a vertical slider should be dragging the thumb from bottom to
// top. However from a y-axis standpoint this is inverted.
return this.vertical ? !this.invert : this.invert;
}
/**
* Whether the slider is at its minimum value.
* @return {?}
*/
get _isMinValue() {
return this.percent === 0;
}
/**
* The amount of space to leave between the slider thumb and the track fill & track background
* elements.
* @return {?}
*/
get _thumbGap() {
if (this.disabled) {
return DISABLED_THUMB_GAP;
}
if (this._isMinValue && !this.thumbLabel) {
return this._isActive ? MIN_VALUE_ACTIVE_THUMB_GAP : MIN_VALUE_NONACTIVE_THUMB_GAP;
}
return 0;
}
/**
* CSS styles for the track background element.
* @return {?}
*/
get _trackBackgroundStyles() {
/** @type {?} */
const axis = this.vertical ? 'Y' : 'X';
/** @type {?} */
const scale = this.vertical ? `1, ${1 - this.percent}, 1` : `${1 - this.percent}, 1, 1`;
/** @type {?} */
const sign = this._shouldInvertMouseCoords() ? '-' : '';
return {
// scale3d avoids some rendering issues in Chrome. See #12071.
transform: `translate${axis}(${sign}${this._thumbGap}px) scale3d(${scale})`
};
}
/**
* CSS styles for the track fill element.
* @return {?}
*/
get _trackFillStyles() {
/** @type {?} */
const percent = this.percent;
/** @type {?} */
const axis = this.vertical ? 'Y' : 'X';
/** @type {?} */
const scale = this.vertical ? `1, ${percent}, 1` : `${percent}, 1, 1`;
/** @type {?} */
const sign = this._shouldInvertMouseCoords() ? '' : '-';
return {
// scale3d avoids some rendering issues in Chrome. See #12071.
transform: `translate${axis}(${sign}${this._thumbGap}px) scale3d(${scale})`,
// iOS Safari has a bug where it won't re-render elements which start of as `scale(0)` until
// something forces a style recalculation on it. Since we'll end up with `scale(0)` when
// the value of the slider is 0, we can easily get into this situation. We force a
// recalculation by changing the element's `display` when it goes from 0 to any other value.
display: percent === 0 ? 'none' : ''
};
}
/**
* CSS styles for the ticks container element.
* @return {?}
*/
get _ticksContainerStyles() {
/** @type {?} */
let axis = this.vertical ? 'Y' : 'X';
// For a horizontal slider in RTL languages we push the ticks container off the left edge
// instead of the right edge to avoid causing a horizontal scrollbar to appear.
/** @type {?} */
let sign = !this.vertical && this._getDirection() == 'rtl' ? '' : '-';
/** @type {?} */
let offset = this._tickIntervalPercent / 2 * 100;
return {
'transform': `translate${axis}(${sign}${offset}%)`
};
}
/**
* CSS styles for the ticks element.
* @return {?}
*/
get _ticksStyles() {
/** @type {?} */
let tickSize = this._tickIntervalPercent * 100;
/** @type {?} */
let backgroundSize = this.vertical ? `2px ${tickSize}%` : `${tickSize}% 2px`;
/** @type {?} */
let axis = this.vertical ? 'Y' : 'X';
// Depending on the direction we pushed the ticks container, push the ticks the opposite
// direction to re-center them but clip off the end edge. In RTL languages we need to flip the
// ticks 180 degrees so we're really cutting off the end edge abd not the start.
/** @type {?} */
let sign = !this.vertical && this._getDirection() == 'rtl' ? '-' : '';
/** @type {?} */
let rotate = !this.vertical && this._getDirection() == 'rtl' ? ' rotate(180deg)' : '';
/** @type {?} */
let styles = {
'backgroundSize': backgroundSize,
// Without translateZ ticks sometimes jitter as the slider moves on Chrome & Firefox.
'transform': `translateZ(0) translate${axis}(${sign}${tickSize / 2}%)${rotate}`
};
if (this._isMinValue && this._thumbGap) {
/** @type {?} */
let side = this.vertical ?
(this._invertAxis ? 'Bottom' : 'Top') :
(this._invertAxis ? 'Right' : 'Left');
styles[`padding${side}`] = `${this._thumbGap}px`;
}
return styles;
}
/**
* @return {?}
*/
get _thumbContainerStyles() {
/** @type {?} */
let axis = this.vertical ? 'Y' : 'X';
// For a horizontal slider in RTL languages we push the thumb container off the left edge
// instead of the right edge to avoid causing a horizontal scrollbar to appear.
/** @type {?} */
let invertOffset = (this._getDirection() == 'rtl' && !this.vertical) ? !this._invertAxis : this._invertAxis;
/** @type {?} */
let offset = (invertOffset ? this.percent : 1 - this.percent) * 100;
return {
'transform': `translate${axis}(-${offset}%)`
};
}
/**
* Whether mouse events should be converted to a slider position by calculating their distance
* from the right or bottom edge of the slider as opposed to the top or left.
* @return {?}
*/
_shouldInvertMouseCoords() {
return (this._getDirection() == 'rtl' && !this.vertical) ? !this._invertAxis : this._invertAxis;
}
/**
* The language direction for this slider element.
* @private
* @return {?}
*/
_getDirection() {
return (this._dir && this._dir.value == 'rtl') ? 'rtl' : 'ltr';
}
/**
* @return {?}
*/
ngOnInit() {
this._focusMonitor
.monitor(this._elementRef, true)
.subscribe((/**
* @param {?} origin
* @return {?}
*/
(origin) => {
this._isActive = !!origin && origin !== 'keyboard';
this._changeDetectorRef.detectChanges();
}));
if (this._dir) {
this._dirChangeSubscription = this._dir.change.subscribe((/**
* @return {?}
*/
() => {
this._changeDetectorRef.markForCheck();
}));
}
}
/**
* @return {?}
*/
ngOnDestroy() {
/** @type {?} */
const element = this._elementRef.nativeElement;
element.removeEventListener('mousedown', this._pointerDown, activeEventOptions);
element.removeEventListener('touchstart', this._pointerDown, activeEventOptions);
this._lastPointerEvent = null;
this._removeGlobalEvents();
this._focusMonitor.stopMonitoring(this._elementRef);
this._dirChangeSubscription.unsubscribe();
}
/**
* @return {?}
*/
_onMouseenter() {
if (this.disabled) {
return;
}
// We save the dimensions of the slider here so we can use them to update the spacing of the
// ticks and determine where on the slider click and slide events happen.
this._sliderDimensions = this._getSliderDimensions();
this._updateTickIntervalPercent();
}
/**
* @return {?}
*/
_onFocus() {
// We save the dimensions of the slider here so we can use them to update the spacing of the
// ticks and determine where on the slider click and slide events happen.
this._sliderDimensions = this._getSliderDimensions();
this._updateTickIntervalPercent();
}
/**
* @return {?}
*/
_onBlur() {
this.onTouched();
}
/**
* @param {?} event
* @return {?}
*/
_onKeydown(event) {
if (this.disabled || hasModifierKey(event)) {
return;
}
/** @type {?} */
const oldValue = this.value;
switch (event.keyCode) {
case PAGE_UP:
this._increment(10);
break;
case PAGE_DOWN:
this._increment(-10);
break;
case END:
this.value = this.max;
break;
case HOME:
this.value = this.min;
break;
case LEFT_ARROW:
// NOTE: For a sighted user it would make more sense that when they press an arrow key on an
// inverted slider the thumb moves in that direction. However for a blind user, nothing
// about the slider indicates that it is inverted. They will expect left to be decrement,
// regardless of how it appears on the screen. For speakers ofRTL languages, they probably
// expect left to mean increment. Therefore we flip the meaning of the side arrow keys for
// RTL. For inverted sliders we prefer a good a11y experience to having it "look right" for
// sighted users, therefore we do not swap the meaning.
this._increment(this._getDirection() == 'rtl' ? 1 : -1);
break;
case UP_ARROW:
this._increment(1);
break;
case RIGHT_ARROW:
// See comment on LEFT_ARROW about the conditions under which we flip the meaning.
this._increment(this._getDirection() == 'rtl' ? -1 : 1);
break;
case DOWN_ARROW:
this._increment(-1);
break;
default:
// Return if the key is not one that we explicitly handle to avoid calling preventDefault on
// it.
return;
}
if (oldValue != this.value) {
this._emitInputEvent();
this._emitChangeEvent();
}
this._isSliding = true;
event.preventDefault();
}
/**
* @return {?}
*/
_onKeyup() {
this._isSliding = false;
}
/**
* Binds our global move and end events. They're bound at the document level and only while
* dragging so that the user doesn't have to keep their pointer exactly over the slider
* as they're swiping across the screen.
* @private
* @param {?} triggerEvent
* @return {?}
*/
_bindGlobalEvents(triggerEvent) {
if (typeof this._document !== 'undefined' && this._document) {
/** @type {?} */
const body = this._document.body;
/** @type {?} */
const isTouch = isTouchEvent(triggerEvent);
/** @type {?} */
const moveEventName = isTouch ? 'touchmove' : 'mousemove';
/** @type {?} */
const endEventName = isTouch ? 'touchend' : 'mouseup';
body.addEventListener(moveEventName, this._pointerMove, activeEventOptions);
body.addEventListener(endEventName, this._pointerUp, activeEventOptions);
if (isTouch) {
body.addEventListener('touchcancel', this._pointerUp, activeEventOptions);
}
}
if (typeof window !== 'undefined' && window) {
window.addEventListener('blur', this._windowBlur);
}
}
/**
* Removes any global event listeners that we may have added.
* @private
* @return {?}
*/
_removeGlobalEvents() {
if (typeof this._document !== 'undefined' && this._document) {
/** @type {?} */
const body = this._document.body;
body.removeEventListener('mousemove', this._pointerMove, activeEventOptions);
body.removeEventListener('mouseup', this._pointerUp, activeEventOptions);
body.removeEventListener('touchmove', this._pointerMove, activeEventOptions);
body.removeEventListener('touchend', this._pointerUp, activeEventOptions);
body.removeEventListener('touchcancel', this._pointerUp, activeEventOptions);
}
if (typeof window !== 'undefined' && window) {
window.removeEventListener('blur', this._windowBlur);
}
}
/**
* Increments the slider by the given number of steps (negative number decrements).
* @private
* @param {?} numSteps
* @return {?}
*/
_increment(numSteps) {
this.value = this._clamp((this.value || 0) + this.step * numSteps, this.min, this.max);
}
/**
* Calculate the new value from the new physical location. The value will always be snapped.
* @private
* @param {?} pos
* @return {?}
*/
_updateValueFromPosition(pos) {
if (!this._sliderDimensions) {
return;
}
/** @type {?} */
let offset = this.vertical ? this._sliderDimensions.top : this._sliderDimensions.left;
/** @type {?} */
let size = this.vertical ? this._sliderDimensions.height : this._sliderDimensions.width;
/** @type {?} */
let posComponent = this.vertical ? pos.y : pos.x;
// The exact value is calculated from the event and used to find the closest snap value.
/** @type {?} */
let percent = this._clamp((posComponent - offset) / size);
if (this._shouldInvertMouseCoords()) {
percent = 1 - percent;
}
// Since the steps may not divide cleanly into the max value, if the user
// slid to 0 or 100 percent, we jump to the min/max value. This approach
// is slightly more intuitive than using `Math.ceil` below, because it
// follows the user's pointer closer.
if (percent === 0) {
this.value = this.min;
}
else if (percent === 1) {
this.value = this.max;
}
else {
/** @type {?} */
const exactValue = this._calculateValue(percent);
// This calculation finds the closest step by finding the closest
// whole number divisible by the step relative to the min.
/** @type {?} */
const closestValue = Math.round((exactValue - this.min) / this.step) * this.step + this.min;
// The value needs to snap to the min and max.
this.value = this._clamp(closestValue, this.min, this.max);
}
}
/**
* Emits a change event if the current value is different from the last emitted value.
* @private
* @return {?}
*/
_emitChangeEvent() {
this._controlValueAccessorChangeFn(this.value);
this.valueChange.emit(this.value);
this.change.emit(this._createChangeEvent());
}
/**
* Emits an input event when the current value is different from the last emitted value.
* @private
* @return {?}
*/
_emitInputEvent() {
this.input.emit(this._createChangeEvent());
}
/**
* Updates the amount of space between ticks as a percentage of the width of the slider.
* @private
* @return {?}
*/
_updateTickIntervalPercent() {
if (!this.tickInterval || !this._sliderDimensions) {
return;
}
if (this.tickInterval == 'auto') {
/** @type {?} */
let trackSize = this.vertical ? this._sliderDimensions.height : this._sliderDimensions.width;
/** @type {?} */
let pixelsPerStep = trackSize * this.step / (this.max - this.min);
/** @type {?} */
let stepsPerTick = Math.ceil(MIN_AUTO_TICK_SEPARATION / pixelsPerStep);
/** @type {?} */
let pixelsPerTick = stepsPerTick * this.step;
this._tickIntervalPercent = pixelsPerTick / trackSize;
}
else {
this._tickIntervalPercent = this.tickInterval * this.step / (this.max - this.min);
}
}
/**
* Creates a slider change object from the specified value.
* @private
* @param {?=} value
* @return {?}
*/
_createChangeEvent(value = this.value) {
/** @type {?} */
let event = new MatSliderChange();
event.source = this;
event.value = value;
return event;
}
/**
* Calculates the percentage of the slider that a value is.
* @private
* @param {?} value
* @return {?}
*/
_calculatePercentage(value) {
return ((value || 0) - this.min) / (this.max - this.min);
}
/**
* Calculates the value a percentage of the slider corresponds to.
* @private
* @param {?} percentage
* @return {?}
*/
_calculateValue(percentage) {
return this.min + percentage * (this.max - this.min);
}
/**
* Return a number between two numbers.
* @private
* @param {?} value
* @param {?=} min
* @param {?=} max
* @return {?}
*/
_clamp(value, min = 0, max = 1) {
return Math.max(min, Math.min(value, max));
}
/**
* Get the bounding client rect of the slider track element.
* The track is used rather than the native element to ignore the extra space that the thumb can
* take up.
* @private
* @return {?}
*/
_getSliderDimensions() {
return this._sliderWrapper ? this._sliderWrapper.nativeElement.getBoundingClientRect() : null;
}
/**
* Focuses the native element.
* Currently only used to allow a blur event to fire but will be used with keyboard input later.
* @private
* @param {?=} options
* @return {?}
*/
_focusHostElement(options) {
this._elementRef.nativeElement.focus(options);
}
/**
* Blurs the native element.
* @private
* @return {?}
*/
_blurHostElement() {
this._elementRef.nativeElement.blur();
}
/**
* Runs a callback inside of the NgZone, if possible.
* @private
* @param {?} fn
* @return {?}
*/
_runInsideZone(fn) {
// @breaking-change 9.0.0 Remove this function once `_ngZone` is a required parameter.
this._ngZone ? this._ngZone.run(fn) : fn();
}
/**
* Runs a callback outside of the NgZone, if possible.
* @private
* @param {?} fn
* @return {?}
*/
_runOutsizeZone(fn) {
// @breaking-change 9.0.0 Remove this function once `_ngZone` is a required parameter.
this._ngZone ? this._ngZone.runOutsideAngular(fn) : fn();
}
/**
* Sets the model value. Implemented as part of ControlValueAccessor.
* @param {?} value
* @return {?}
*/
writeValue(value) {
this.value = value;
}
/**
* Registers a callback to be triggered when the value has changed.
* Implemented as part of ControlValueAccessor.
* @param {?} fn Callback to be registered.
* @return {?}
*/
registerOnChange(fn) {
this._controlValueAccessorChangeFn = fn;
}
/**
* Registers a callback to be triggered when the component is touched.
* Implemented as part of ControlValueAccessor.
* @param {?} fn Callback to be registered.
* @return {?}
*/
registerOnTouched(fn) {
this.onTouched = fn;
}
/**
* Sets whether the component should be disabled.
* Implemented as part of ControlValueAccessor.
* @param {?} isDisabled
* @return {?}
*/
setDisabledState(isDisabled) {
this.disabled = isDisabled;
}
}
MatSlider.decorators = [
{ type: Component, args: [{
selector: 'mat-slider',
exportAs: 'matSlider',
providers: [MAT_SLIDER_VALUE_ACCESSOR],
host: {
'(focus)': '_onFocus()',
'(blur)': '_onBlur()',
'(keydown)': '_onKeydown($event)',
'(keyup)': '_onKeyup()',
'(mouseenter)': '_onMouseenter()',
// On Safari starting to slide temporarily triggers text selection mode which
// show the wrong cursor. We prevent it by stopping the `selectstart` event.
'(selectstart)': '$event.preventDefault()',
'class': 'mat-slider',
'role': 'slider',
'[tabIndex]': 'tabIndex',
'[attr.aria-disabled]': 'disabled',
'[attr.aria-valuemax]': 'max',
'[attr.aria-valuemin]': 'min',
'[attr.aria-valuenow]': 'value',
'[attr.aria-orientation]': 'vertical ? "vertical" : "horizontal"',
'[class.mat-slider-disabled]': 'disabled',
'[class.mat-slider-has-ticks]': 'tickInterval',
'[class.mat-slider-horizontal]': '!vertical',
'[class.mat-slider-axis-inverted]': '_invertAxis',
// Class binding which is only used by the test harness as there is no other
// way for the harness to detect if mouse coordinates need to be inverted.
'[class.mat-slider-invert-mouse-coords]': '_shouldInvertMouseCoords()',
'[class.mat-slider-sliding]': '_isSliding',
'[class.mat-slider-thumb-label-showing]': 'thumbLabel',
'[class.mat-slider-vertical]': 'vertical',
'[class.mat-slider-min-value]': '_isMinValue',
'[class.mat-slider-hide-last-tick]': 'disabled || _isMinValue && _thumbGap && _invertAxis',
'[class._mat-animation-noopable]': '_animationMode === "NoopAnimations"',
},
template: "<div class=\"mat-slider-wrapper\" #sliderWrapper>\n <div class=\"mat-slider-track-wrapper\">\n <div class=\"mat-slider-track-background\" [ngStyle]=\"_trackBackgroundStyles\"></div>\n <div class=\"mat-slider-track-fill\" [ngStyle]=\"_trackFillStyles\"></div>\n </div>\n <div class=\"mat-slider-ticks-container\" [ngStyle]=\"_ticksContainerStyles\">\n <div class=\"mat-slider-ticks\" [ngStyle]=\"_ticksStyles\"></div>\n </div>\n <div class=\"mat-slider-thumb-container\" [ngStyle]=\"_thumbContainerStyles\">\n <div class=\"mat-slider-focus-ring\"></div>\n <div class=\"mat-slider-thumb\"></div>\n <div class=\"mat-slider-thumb-label\">\n <span class=\"mat-slider-thumb-label-text\">{{displayValue}}</span>\n </div>\n </div>\n</div>\n",
inputs: ['disabled', 'color', 'tabIndex'],
encapsulation: ViewEncapsulation.None,
changeDetection: ChangeDetectionStrategy.OnPush,
styles: [".mat-slider{display:inline-block;position:relative;box-sizing:border-box;padding:8px;outline:none;vertical-align:middle}.mat-slider:not(.mat-slider-disabled):active,.mat-slider.mat-slider-sliding:not(.mat-slider-disabled){cursor:-webkit-grabbing;cursor:grabbing}.mat-slider-wrapper{position:absolute}.mat-slider-track-wrapper{position:absolute;top:0;left:0;overflow:hidden}.mat-slider-track-fill{position:absolute;transform-origin:0 0;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-track-background{position:absolute;transform-origin:100% 100%;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-ticks-container{position:absolute;left:0;top:0;overflow:hidden}.mat-slider-ticks{background-repeat:repeat;background-clip:content-box;box-sizing:border-box;opacity:0;transition:opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-thumb-container{position:absolute;z-index:1;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-focus-ring{position:absolute;width:30px;height:30px;border-radius:50%;transform:scale(0);opacity:0;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1),opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider.cdk-keyboard-focused .mat-slider-focus-ring,.mat-slider.cdk-program-focused .mat-slider-focus-ring{transform:scale(1);opacity:1}.mat-slider:not(.mat-slider-disabled):not(.mat-slider-sliding) .mat-slider-thumb-label,.mat-slider:not(.mat-slider-disabled):not(.mat-slider-sliding) .mat-slider-thumb{cursor:-webkit-grab;cursor:grab}.mat-slider-thumb{position:absolute;right:-10px;bottom:-10px;box-sizing:border-box;width:20px;height:20px;border:3px solid transparent;border-radius:50%;transform:scale(0.7);transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1),border-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-thumb-label{display:none;align-items:center;justify-content:center;position:absolute;width:28px;height:28px;border-radius:50%;transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1),border-radius 400ms cubic-bezier(0.25, 0.8, 0.25, 1),background-color 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.cdk-high-contrast-active .mat-slider-thumb-label{outline:solid 1px}.mat-slider-thumb-label-text{z-index:1;opacity:0;transition:opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-sliding .mat-slider-track-fill,.mat-slider-sliding .mat-slider-track-background,.mat-slider-sliding .mat-slider-thumb-container{transition-duration:0ms}.mat-slider-has-ticks .mat-slider-wrapper::after{content:\"\";position:absolute;border-width:0;border-style:solid;opacity:0;transition:opacity 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}.mat-slider-has-ticks.cdk-focused:not(.mat-slider-hide-last-tick) .mat-slider-wrapper::after,.mat-slider-has-ticks:hover:not(.mat-slider-hide-last-tick) .mat-slider-wrapper::after{opacity:1}.mat-slider-has-ticks.cdk-focused:not(.mat-slider-disabled) .mat-slider-ticks,.mat-slider-has-ticks:hover:not(.mat-slider-disabled) .mat-slider-ticks{opacity:1}.mat-slider-thumb-label-showing .mat-slider-focus-ring{display:none}.mat-slider-thumb-label-showing .mat-slider-thumb-label{display:flex}.mat-slider-axis-inverted .mat-slider-track-fill{transform-origin:100% 100%}.mat-slider-axis-inverted .mat-slider-track-background{transform-origin:0 0}.mat-slider:not(.mat-slider-disabled).cdk-focused.mat-slider-thumb-label-showing .mat-slider-thumb{transform:scale(0)}.mat-slider:not(.mat-slider-disabled).cdk-focused .mat-slider-thumb-label{border-radius:50% 50% 0}.mat-slider:not(.mat-slider-disabled).cdk-focused .mat-slider-thumb-label-text{opacity:1}.mat-slider:not(.mat-slider-disabled).cdk-mouse-focused .mat-slider-thumb,.mat-slider:not(.mat-slider-disabled).cdk-touch-focused .mat-slider-thumb,.mat-slider:not(.mat-slider-disabled).cdk-program-focused .mat-slider-thumb{border-width:2px;transform:scale(1)}.mat-slider-disabled .mat-slider-focus-ring{transform:scale(0);opacity:0}.mat-slider-disabled .mat-slider-thumb{border-width:4px;transform:scale(0.5)}.mat-slider-disabled .mat-slider-thumb-label{display:none}.mat-slider-horizontal{height:48px;min-width:128px}.mat-slider-horizontal .mat-slider-wrapper{height:2px;top:23px;left:8px;right:8px}.mat-slider-horizontal .mat-slider-wrapper::after{height:2px;border-left-width:2px;right:0;top:0}.mat-slider-horizontal .mat-slider-track-wrapper{height:2px;width:100%}.mat-slider-horizontal .mat-slider-track-fill{height:2px;width:100%;transform:scaleX(0)}.mat-slider-horizontal .mat-slider-track-background{height:2px;width:100%;transform:scaleX(1)}.mat-slider-horizontal .mat-slider-ticks-container{height:2px;width:100%}.cdk-high-contrast-active .mat-slider-horizontal .mat-slider-ticks-container{height:0;outline:solid 2px;top:1px}.mat-slider-horizontal .mat-slider-ticks{height:2px;width:100%}.mat-slider-horizontal .mat-slider-thumb-container{width:100%;height:0;top:50%}.mat-slider-horizontal .mat-slider-focus-ring{top:-15px;right:-15px}.mat-slider-horizontal .mat-slider-thumb-label{right:-14px;top:-40px;transform:translateY(26px) scale(0.01) rotate(45deg)}.mat-slider-horizontal .mat-slider-thumb-label-text{transform:rotate(-45deg)}.mat-slider-horizontal.cdk-focused .mat-slider-thumb-label{transform:rotate(45deg)}.cdk-high-contrast-active .mat-slider-horizontal.cdk-focused .mat-slider-thumb-label,.cdk-high-contrast-active .mat-slider-horizontal.cdk-focused .mat-slider-thumb-label-text{transform:none}.mat-slider-vertical{width:48px;min-height:128px}.mat-slider-vertical .mat-slider-wrapper{width:2px;top:8px;bottom:8px;left:23px}.mat-slider-vertical .mat-slider-wrapper::after{width:2px;border-top-width:2px;bottom:0;left:0}.mat-slider-vertical .mat-slider-track-wrapper{height:100%;width:2px}.mat-slider-vertical .mat-slider-track-fill{height:100%;width:2px;transform:scaleY(0)}.mat-slider-vertical .mat-slider-track-background{height:100%;width:2px;transform:scaleY(1)}.mat-slider-vertical .mat-slider-ticks-container{width:2px;height:100%}.cdk-high-contrast-active .mat-slider-vertical .mat-slider-ticks-container{width:0;outline:solid 2px;left:1px}.mat-slider-vertical .mat-slider-focus-ring{bottom:-15px;left:-15px}.mat-slider-vertical .mat-slider-ticks{width:2px;height:100%}.mat-slider-vertical .mat-slider-thumb-container{height:100%;width:0;left:50%}.mat-slider-vertical .mat-slider-thumb{-webkit-backface-visibility:hidden;backface-visibility:hidden}.mat-slider-vertical .mat-slider-thumb-label{bottom:-14px;left:-40px;transform:translateX(26px) scale(0.01) rotate(-45deg)}.mat-slider-vertical .mat-slider-thumb-label-text{transform:rotate(45deg)}.mat-slider-vertical.cdk-focused .mat-slider-thumb-label{transform:rotate(-45deg)}[dir=rtl] .mat-slider-wrapper::after{left:0;right:auto}[dir=rtl] .mat-slider-horizontal .mat-slider-track-fill{transform-origin:100% 100%}[dir=rtl] .mat-slider-horizontal .mat-slider-track-background{transform-origin:0 0}[dir=rtl] .mat-slider-horizontal.mat-slider-axis-inverted .mat-slider-track-fill{transform-origin:0 0}[dir=rtl] .mat-slider-horizontal.mat-slider-axis-inverted .mat-slider-track-background{transform-origin:100% 100%}.mat-slider._mat-animation-noopable .mat-slider-track-fill,.mat-slider._mat-animation-noopable .mat-slider-track-background,.mat-slider._mat-animation-noopable .mat-slider-ticks,.mat-slider._mat-animation-noopable .mat-slider-thumb-container,.mat-slider._mat-animation-noopable .mat-slider-focus-ring,.mat-slider._mat-animation-noopable .mat-slider-thumb,.mat-slider._mat-animation-noopable .mat-slider-thumb-label,.mat-slider._mat-animation-noopable .mat-slider-thumb-label-text,.mat-slider._mat-animation-noopable .mat-slider-has-ticks .mat-slider-wrapper::after{transition:none}\n"]
}] }
];
/** @nocollapse */
MatSlider.ctorParameters = () => [
{ type: ElementRef },
{ type: FocusMonitor },
{ type: ChangeDetectorRef },
{ type: Directionality, decorators: [{ type: Optional }] },
{ type: String, decorators: [{ type: Attribute, args: ['tabindex',] }] },
{ type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] },
{ type: NgZone },
{ type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] }
];
MatSlider.propDecorators = {
invert: [{ type: Input }],
max: [{ type: Input }],
min: [{ type: Input }],
step: [{ type: Input }],
thumbLabel: [{ type: Input }],
tickInterval: [{ type: Input }],
value: [{ type: Input }],
displayWith: [{ type: Input }],
vertical: [{ type: Input }],
change: [{ type: Output }],
input: [{ type: Output }],
valueChange: [{ type: Output }],
_sliderWrapper: [{ type: ViewChild, args: ['sliderWrapper',] }]
};
if (false) {
/** @type {?} */
MatSlider.ngAcceptInputType_invert;
/** @type {?} */
MatSlider.ngAcceptInputType_max;
/** @type {?} */
MatSlider.ngAcceptInputType_min;
/** @type {?} */
MatSlider.ngAcceptInputType_step;
/** @type {?} */
MatSlider.ngAcceptInputType_thumbLabel;
/** @type {?} */
MatSlider.ngAcceptInputType_tickInterval;
/** @type {?} */
MatSlider.ngAcceptInputType_value;
/** @type {?} */
MatSlider.ngAcceptInputType_vertical;
/** @type {?} */
MatSlider.ngAcceptInputType_disabled;
/**
* @type {?}
* @private
*/
MatSlider.prototype._invert;
/**
* @type {?}
* @private
*/
MatSlider.prototype._max;
/**
* @type {?}
* @private
*/
MatSlider.prototype._min;
/**
* @type {?}
* @private
*/
MatSlider.prototype._step;
/**
* @type {?}
* @private
*/
MatSlider.prototype._thumbLabel;
/**
* @type {?}
* @private
*/
MatSlider.prototype._tickInterval;
/**
* @type {?}
* @private
*/
MatSlider.prototype._value;
/**
* Function that will be used to format the value before it is displayed
* in the thumb label. Can be used to format very large number in order
* for them to fit into the slider thumb.
* @type {?}
*/
MatSlider.prototype.displayWith;
/**
* @type {?}
* @private
*/
MatSlider.prototype._vertical;
/**
* Event emitted when the slider value has changed.
* @type {?}
*/
MatSlider.prototype.change;
/**
* Event emitted when the slider thumb moves.
* @type {?}
*/
MatSlider.prototype.input;
/**
* Emits when the raw value of the slider changes. This is here primarily
* to facilitate the two-way binding for the `value` input.
* \@docs-private
* @type {?}
*/
MatSlider.prototype.valueChange;
/**
* onTouch function registered via registerOnTouch (ControlValueAccessor).
* @type {?}
*/
MatSlider.prototype.onTouched;
/**
* @type {?}
* @private
*/
MatSlider.prototype._percent;
/**
* Whether or not the thumb is sliding.
* Used to determine if there should be a transition for the thumb and fill track.
* @type {?}
*/
MatSlider.prototype._isSliding;
/**
* Whether or not the slider is active (clicked or sliding).
* Used to shrink and grow the thumb as according to the Material Design spec.
* @type {?}
*/
MatSlider.prototype._isActive;
/**
* The size of a tick interval as a percentage of the size of the track.
* @type {?}
* @private