| import { DOCUMENT, CommonModule } from '@angular/common'; |
| import { forwardRef, EventEmitter, Component, ViewEncapsulation, ChangeDetectionStrategy, ElementRef, ChangeDetectorRef, Optional, Attribute, NgZone, Inject, 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'; |
| |
| /** |
| * @license |
| * Copyright Google LLC All Rights Reserved. |
| * |
| * Use of this source code is governed by an MIT-style license that can be |
| * found in the LICENSE file at https://angular.io/license |
| */ |
| 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. |
| */ |
| const MIN_AUTO_TICK_SEPARATION = 30; |
| /** The thumb gap size for a disabled slider. */ |
| const DISABLED_THUMB_GAP = 7; |
| /** The thumb gap size for a non-active slider at its minimum value. */ |
| const MIN_VALUE_NONACTIVE_THUMB_GAP = 7; |
| /** The thumb gap size for an active slider at its minimum value. */ |
| 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 |
| */ |
| const MAT_SLIDER_VALUE_ACCESSOR = { |
| provide: NG_VALUE_ACCESSOR, |
| useExisting: forwardRef(() => MatSlider), |
| multi: true |
| }; |
| /** A simple change event emitted by the MatSlider component. */ |
| class MatSliderChange { |
| } |
| // Boilerplate for applying mixins to MatSlider. |
| /** @docs-private */ |
| class MatSliderBase { |
| constructor(_elementRef) { |
| this._elementRef = _elementRef; |
| } |
| } |
| 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 { |
| constructor(elementRef, _focusMonitor, _changeDetectorRef, _dir, tabIndex, _ngZone, _document, _animationMode) { |
| super(elementRef); |
| this._focusMonitor = _focusMonitor; |
| this._changeDetectorRef = _changeDetectorRef; |
| this._dir = _dir; |
| this._ngZone = _ngZone; |
| this._animationMode = _animationMode; |
| 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 = () => { }; |
| 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 = () => { }; |
| /** Subscription to the Directionality change EventEmitter. */ |
| this._dirChangeSubscription = Subscription.EMPTY; |
| /** Called when the user has put their pointer down on the slider. */ |
| this._pointerDown = (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._ngZone.run(() => { |
| const oldValue = this.value; |
| 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 = oldValue; |
| // Emit a change and input event if the value changed. |
| if (oldValue != this.value) { |
| this._emitInputEvent(); |
| } |
| }); |
| }; |
| /** |
| * Called when the user has moved their pointer after |
| * starting to drag. Bound on the document level. |
| */ |
| this._pointerMove = (event) => { |
| if (this._isSliding) { |
| // Prevent the slide from selecting anything else. |
| event.preventDefault(); |
| 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 = (event) => { |
| if (this._isSliding) { |
| event.preventDefault(); |
| this._removeGlobalEvents(); |
| this._isSliding = false; |
| if (this._valueOnSlideStart != this.value && !this.disabled) { |
| this._emitChangeEvent(); |
| } |
| this._valueOnSlideStart = this._lastPointerEvent = null; |
| } |
| }; |
| /** Called when the window has lost focus. */ |
| this._windowBlur = () => { |
| // 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; |
| _ngZone.runOutsideAngular(() => { |
| const element = elementRef.nativeElement; |
| element.addEventListener('mousedown', this._pointerDown, activeEventOptions); |
| element.addEventListener('touchstart', this._pointerDown, activeEventOptions); |
| }); |
| } |
| /** Whether the slider is inverted. */ |
| get invert() { return this._invert; } |
| set invert(value) { |
| this._invert = coerceBooleanProperty(value); |
| } |
| /** The maximum value that the slider can have. */ |
| get max() { return this._max; } |
| 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. */ |
| get min() { return this._min; } |
| 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. */ |
| get step() { return this._step; } |
| set step(v) { |
| this._step = coerceNumberProperty(v, this._step); |
| if (this._step % 1 !== 0) { |
| this._roundToDecimal = 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. */ |
| get thumbLabel() { return this._thumbLabel; } |
| 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). |
| */ |
| get tickInterval() { return this._tickInterval; } |
| set tickInterval(value) { |
| if (value === 'auto') { |
| this._tickInterval = 'auto'; |
| } |
| else if (typeof value === 'number' || typeof value === 'string') { |
| this._tickInterval = coerceNumberProperty(value, this._tickInterval); |
| } |
| else { |
| this._tickInterval = 0; |
| } |
| } |
| /** Value of the slider. */ |
| 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; |
| } |
| set value(v) { |
| if (v !== this._value) { |
| 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 !== this.min && value !== this.max) { |
| 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. */ |
| get vertical() { return this._vertical; } |
| set vertical(value) { |
| this._vertical = coerceBooleanProperty(value); |
| } |
| /** The value to be used for display purposes. */ |
| 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(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 */ |
| focus(options) { |
| this._focusHostElement(options); |
| } |
| /** blur the host element */ |
| blur() { |
| this._blurHostElement(); |
| } |
| /** The percentage of the slider that coincides with the value. */ |
| 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). |
| */ |
| _shouldInvertAxis() { |
| // 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. */ |
| _isMinValue() { |
| return this.percent === 0; |
| } |
| /** |
| * The amount of space to leave between the slider thumb and the track fill & track background |
| * elements. |
| */ |
| _getThumbGap() { |
| 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. */ |
| _getTrackBackgroundStyles() { |
| const axis = this.vertical ? 'Y' : 'X'; |
| const scale = this.vertical ? `1, ${1 - this.percent}, 1` : `${1 - this.percent}, 1, 1`; |
| const sign = this._shouldInvertMouseCoords() ? '-' : ''; |
| return { |
| // scale3d avoids some rendering issues in Chrome. See #12071. |
| transform: `translate${axis}(${sign}${this._getThumbGap()}px) scale3d(${scale})` |
| }; |
| } |
| /** CSS styles for the track fill element. */ |
| _getTrackFillStyles() { |
| const percent = this.percent; |
| const axis = this.vertical ? 'Y' : 'X'; |
| const scale = this.vertical ? `1, ${percent}, 1` : `${percent}, 1, 1`; |
| const sign = this._shouldInvertMouseCoords() ? '' : '-'; |
| return { |
| // scale3d avoids some rendering issues in Chrome. See #12071. |
| transform: `translate${axis}(${sign}${this._getThumbGap()}px) scale3d(${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. */ |
| _getTicksContainerStyles() { |
| 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. |
| let sign = !this.vertical && this._getDirection() == 'rtl' ? '' : '-'; |
| let offset = this._tickIntervalPercent / 2 * 100; |
| return { |
| 'transform': `translate${axis}(${sign}${offset}%)` |
| }; |
| } |
| /** CSS styles for the ticks element. */ |
| _getTicksStyles() { |
| let tickSize = this._tickIntervalPercent * 100; |
| let backgroundSize = this.vertical ? `2px ${tickSize}%` : `${tickSize}% 2px`; |
| 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. |
| let sign = !this.vertical && this._getDirection() == 'rtl' ? '-' : ''; |
| let rotate = !this.vertical && this._getDirection() == 'rtl' ? ' rotate(180deg)' : ''; |
| 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._getThumbGap()) { |
| const shouldInvertAxis = this._shouldInvertAxis(); |
| let side; |
| if (this.vertical) { |
| side = shouldInvertAxis ? 'Bottom' : 'Top'; |
| } |
| else { |
| side = shouldInvertAxis ? 'Right' : 'Left'; |
| } |
| styles[`padding${side}`] = `${this._getThumbGap()}px`; |
| } |
| return styles; |
| } |
| _getThumbContainerStyles() { |
| const shouldInvertAxis = this._shouldInvertAxis(); |
| 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. |
| let invertOffset = (this._getDirection() == 'rtl' && !this.vertical) ? !shouldInvertAxis : shouldInvertAxis; |
| 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. |
| */ |
| _shouldInvertMouseCoords() { |
| const shouldInvertAxis = this._shouldInvertAxis(); |
| return (this._getDirection() == 'rtl' && !this.vertical) ? !shouldInvertAxis : shouldInvertAxis; |
| } |
| /** The language direction for this slider element. */ |
| _getDirection() { |
| return (this._dir && this._dir.value == 'rtl') ? 'rtl' : 'ltr'; |
| } |
| ngAfterViewInit() { |
| this._focusMonitor |
| .monitor(this._elementRef, true) |
| .subscribe((origin) => { |
| this._isActive = !!origin && origin !== 'keyboard'; |
| this._changeDetectorRef.detectChanges(); |
| }); |
| if (this._dir) { |
| this._dirChangeSubscription = this._dir.change.subscribe(() => { |
| this._changeDetectorRef.markForCheck(); |
| }); |
| } |
| } |
| ngOnDestroy() { |
| 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(); |
| } |
| _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(); |
| } |
| _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(); |
| } |
| _onBlur() { |
| this.onTouched(); |
| } |
| _onKeydown(event) { |
| if (this.disabled || hasModifierKey(event)) { |
| return; |
| } |
| 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(); |
| } |
| _onKeyup() { |
| this._isSliding = false; |
| } |
| /** Use defaultView of injected document if available or fallback to global window reference */ |
| _getWindow() { |
| return this._document.defaultView || window; |
| } |
| /** |
| * 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. |
| */ |
| _bindGlobalEvents(triggerEvent) { |
| // Note that we bind the events to the `document`, because it allows us to capture |
| // drag cancel events where the user's pointer is outside the browser window. |
| const document = this._document; |
| const isTouch = isTouchEvent(triggerEvent); |
| const moveEventName = isTouch ? 'touchmove' : 'mousemove'; |
| const endEventName = isTouch ? 'touchend' : 'mouseup'; |
| document.addEventListener(moveEventName, this._pointerMove, activeEventOptions); |
| document.addEventListener(endEventName, this._pointerUp, activeEventOptions); |
| if (isTouch) { |
| document.addEventListener('touchcancel', this._pointerUp, activeEventOptions); |
| } |
| const window = this._getWindow(); |
| if (typeof window !== 'undefined' && window) { |
| window.addEventListener('blur', this._windowBlur); |
| } |
| } |
| /** Removes any global event listeners that we may have added. */ |
| _removeGlobalEvents() { |
| const document = this._document; |
| document.removeEventListener('mousemove', this._pointerMove, activeEventOptions); |
| document.removeEventListener('mouseup', this._pointerUp, activeEventOptions); |
| document.removeEventListener('touchmove', this._pointerMove, activeEventOptions); |
| document.removeEventListener('touchend', this._pointerUp, activeEventOptions); |
| document.removeEventListener('touchcancel', this._pointerUp, activeEventOptions); |
| const window = this._getWindow(); |
| if (typeof window !== 'undefined' && window) { |
| window.removeEventListener('blur', this._windowBlur); |
| } |
| } |
| /** Increments the slider by the given number of steps (negative number decrements). */ |
| _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. */ |
| _updateValueFromPosition(pos) { |
| if (!this._sliderDimensions) { |
| return; |
| } |
| let offset = this.vertical ? this._sliderDimensions.top : this._sliderDimensions.left; |
| let size = this.vertical ? this._sliderDimensions.height : this._sliderDimensions.width; |
| let posComponent = this.vertical ? pos.y : pos.x; |
| // The exact value is calculated from the event and used to find the closest snap value. |
| 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 { |
| 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. |
| 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. */ |
| _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. */ |
| _emitInputEvent() { |
| this.input.emit(this._createChangeEvent()); |
| } |
| /** Updates the amount of space between ticks as a percentage of the width of the slider. */ |
| _updateTickIntervalPercent() { |
| if (!this.tickInterval || !this._sliderDimensions) { |
| return; |
| } |
| if (this.tickInterval == 'auto') { |
| let trackSize = this.vertical ? this._sliderDimensions.height : this._sliderDimensions.width; |
| let pixelsPerStep = trackSize * this.step / (this.max - this.min); |
| let stepsPerTick = Math.ceil(MIN_AUTO_TICK_SEPARATION / pixelsPerStep); |
| 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. */ |
| _createChangeEvent(value = this.value) { |
| let event = new MatSliderChange(); |
| event.source = this; |
| event.value = value; |
| return event; |
| } |
| /** Calculates the percentage of the slider that a value is. */ |
| _calculatePercentage(value) { |
| return ((value || 0) - this.min) / (this.max - this.min); |
| } |
| /** Calculates the value a percentage of the slider corresponds to. */ |
| _calculateValue(percentage) { |
| return this.min + percentage * (this.max - this.min); |
| } |
| /** Return a number between two numbers. */ |
| _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. |
| */ |
| _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. |
| */ |
| _focusHostElement(options) { |
| this._elementRef.nativeElement.focus(options); |
| } |
| /** Blurs the native element. */ |
| _blurHostElement() { |
| this._elementRef.nativeElement.blur(); |
| } |
| /** |
| * Sets the model value. Implemented as part of ControlValueAccessor. |
| * @param value |
| */ |
| 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. |
| */ |
| 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. |
| */ |
| registerOnTouched(fn) { |
| this.onTouched = fn; |
| } |
| /** |
| * Sets whether the component should be disabled. |
| * Implemented as part of ControlValueAccessor. |
| * @param isDisabled |
| */ |
| 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 mat-focus-indicator', |
| 'role': 'slider', |
| '[tabIndex]': 'tabIndex', |
| '[attr.aria-disabled]': 'disabled', |
| '[attr.aria-valuemax]': 'max', |
| '[attr.aria-valuemin]': 'min', |
| '[attr.aria-valuenow]': 'value', |
| // NVDA and Jaws appear to announce the `aria-valuenow` by calculating its percentage based |
| // on its value between `aria-valuemin` and `aria-valuemax`. Due to how decimals are handled, |
| // it can cause the slider to read out a very long value like 0.20000068 if the current value |
| // is 0.2 with a min of 0 and max of 1. We work around the issue by setting `aria-valuetext` |
| // to the same value that we set on the slider's thumb which will be truncated. |
| '[attr.aria-valuetext]': 'valueText == null ? displayValue : valueText', |
| '[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]': '_shouldInvertAxis()', |
| // 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() && _getThumbGap() && _shouldInvertAxis()', |
| '[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]=\"_getTrackBackgroundStyles()\"></div>\n <div class=\"mat-slider-track-fill\" [ngStyle]=\"_getTrackFillStyles()\"></div>\n </div>\n <div class=\"mat-slider-ticks-container\" [ngStyle]=\"_getTicksContainerStyles()\">\n <div class=\"mat-slider-ticks\" [ngStyle]=\"_getTicksStyles()\"></div>\n </div>\n <div class=\"mat-slider-thumb-container\" [ngStyle]=\"_getThumbContainerStyles()\">\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;-webkit-print-color-adjust:exact;color-adjust:exact}.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"] |
| },] } |
| ]; |
| MatSlider.ctorParameters = () => [ |
| { type: ElementRef }, |
| { type: FocusMonitor }, |
| { type: ChangeDetectorRef }, |
| { type: Directionality, decorators: [{ type: Optional }] }, |
| { type: String, decorators: [{ type: Attribute, args: ['tabindex',] }] }, |
| { type: NgZone }, |
| { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }, |
| { type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] } |
| ]; |
| 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 }], |
| valueText: [{ type: Input }], |
| vertical: [{ type: Input }], |
| change: [{ type: Output }], |
| input: [{ type: Output }], |
| valueChange: [{ type: Output }], |
| _sliderWrapper: [{ type: ViewChild, args: ['sliderWrapper',] }] |
| }; |
| /** Returns whether an event is a touch event. */ |
| function isTouchEvent(event) { |
| // This function is called for every pixel that the user has dragged so we need it to be |
| // as fast as possible. Since we only bind mouse events and touch events, we can assume |
| // that if the event's name starts with `t`, it's a touch event. |
| return event.type[0] === 't'; |
| } |
| /** Gets the coordinates of a touch or mouse event relative to the viewport. */ |
| function getPointerPositionOnPage(event) { |
| // `touches` will be empty for start/end events so we have to fall back to `changedTouches`. |
| const point = isTouchEvent(event) ? (event.touches[0] || event.changedTouches[0]) : event; |
| return { x: point.clientX, y: point.clientY }; |
| } |
| |
| /** |
| * @license |
| * Copyright Google LLC All Rights Reserved. |
| * |
| * Use of this source code is governed by an MIT-style license that can be |
| * found in the LICENSE file at https://angular.io/license |
| */ |
| class MatSliderModule { |
| } |
| MatSliderModule.decorators = [ |
| { type: NgModule, args: [{ |
| imports: [CommonModule, MatCommonModule], |
| exports: [MatSlider, MatCommonModule], |
| declarations: [MatSlider], |
| },] } |
| ]; |
| |
| /** |
| * @license |
| * Copyright Google LLC All Rights Reserved. |
| * |
| * Use of this source code is governed by an MIT-style license that can be |
| * found in the LICENSE file at https://angular.io/license |
| */ |
| |
| /** |
| * Generated bundle index. Do not edit. |
| */ |
| |
| export { MAT_SLIDER_VALUE_ACCESSOR, MatSlider, MatSliderChange, MatSliderModule }; |
| //# sourceMappingURL=slider.js.map |
