@angular/material
Version:
Angular Material
1,356 lines (1,347 loc) • 88 kB
JavaScript
/**
* @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
*/
import { Directive, ElementRef, Inject, InjectionToken, NgZone, Optional, TemplateRef, ChangeDetectionStrategy, Component, ContentChild, Input, ViewChild, ViewContainerRef, ViewEncapsulation, ChangeDetectorRef, Output, EventEmitter, ComponentFactoryResolver, forwardRef, ContentChildren, Attribute, NgModule } from '@angular/core';
import { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';
import { CdkPortal, TemplatePortal, CdkPortalOutlet, PortalHostDirective, PortalModule } from '@angular/cdk/portal';
import { mixinDisabled, mixinColor, mixinDisableRipple, MAT_RIPPLE_GLOBAL_OPTIONS, mixinTabIndex, RippleRenderer, MatCommonModule, MatRippleModule } from '@angular/material/core';
import { Subject, Subscription, merge, of, timer, fromEvent } from 'rxjs';
import { animate, state, style, transition, trigger } from '@angular/animations';
import { Directionality } from '@angular/cdk/bidi';
import { startWith, distinctUntilChanged, takeUntil } from 'rxjs/operators';
import { coerceBooleanProperty, coerceNumberProperty } from '@angular/cdk/coercion';
import { ViewportRuler } from '@angular/cdk/scrolling';
import { FocusKeyManager, FocusMonitor, A11yModule } from '@angular/cdk/a11y';
import { END, ENTER, HOME, SPACE, hasModifierKey } from '@angular/cdk/keycodes';
import { Platform, normalizePassiveListenerOptions } from '@angular/cdk/platform';
import { ObserversModule } from '@angular/cdk/observers';
import { CommonModule } from '@angular/common';
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* Injection token for the MatInkBar's Positioner.
* @type {?}
*/
const _MAT_INK_BAR_POSITIONER = new InjectionToken('MatInkBarPositioner', {
providedIn: 'root',
factory: _MAT_INK_BAR_POSITIONER_FACTORY
});
/**
* The default positioner function for the MatInkBar.
* \@docs-private
* @return {?}
*/
function _MAT_INK_BAR_POSITIONER_FACTORY() {
/** @type {?} */
const method = (/**
* @param {?} element
* @return {?}
*/
(element) => ({
left: element ? (element.offsetLeft || 0) + 'px' : '0',
width: element ? (element.offsetWidth || 0) + 'px' : '0',
}));
return method;
}
/**
* The ink-bar is used to display and animate the line underneath the current active tab label.
* \@docs-private
*/
class MatInkBar {
/**
* @param {?} _elementRef
* @param {?} _ngZone
* @param {?} _inkBarPositioner
* @param {?=} _animationMode
*/
constructor(_elementRef, _ngZone, _inkBarPositioner, _animationMode) {
this._elementRef = _elementRef;
this._ngZone = _ngZone;
this._inkBarPositioner = _inkBarPositioner;
this._animationMode = _animationMode;
}
/**
* Calculates the styles from the provided element in order to align the ink-bar to that element.
* Shows the ink bar if previously set as hidden.
* @param {?} element
* @return {?}
*/
alignToElement(element) {
this.show();
if (typeof requestAnimationFrame !== 'undefined') {
this._ngZone.runOutsideAngular((/**
* @return {?}
*/
() => {
requestAnimationFrame((/**
* @return {?}
*/
() => this._setStyles(element)));
}));
}
else {
this._setStyles(element);
}
}
/**
* Shows the ink bar.
* @return {?}
*/
show() {
this._elementRef.nativeElement.style.visibility = 'visible';
}
/**
* Hides the ink bar.
* @return {?}
*/
hide() {
this._elementRef.nativeElement.style.visibility = 'hidden';
}
/**
* Sets the proper styles to the ink bar element.
* @private
* @param {?} element
* @return {?}
*/
_setStyles(element) {
/** @type {?} */
const positions = this._inkBarPositioner(element);
/** @type {?} */
const inkBar = this._elementRef.nativeElement;
inkBar.style.left = positions.left;
inkBar.style.width = positions.width;
}
}
MatInkBar.decorators = [
{ type: Directive, args: [{
selector: 'mat-ink-bar',
host: {
'class': 'mat-ink-bar',
'[class._mat-animation-noopable]': `_animationMode === 'NoopAnimations'`,
},
},] },
];
/** @nocollapse */
MatInkBar.ctorParameters = () => [
{ type: ElementRef },
{ type: NgZone },
{ type: undefined, decorators: [{ type: Inject, args: [_MAT_INK_BAR_POSITIONER,] }] },
{ type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] }
];
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* Decorates the `ng-template` tags and reads out the template from it.
*/
class MatTabContent {
/**
* @param {?} template
*/
constructor(template) {
this.template = template;
}
}
MatTabContent.decorators = [
{ type: Directive, args: [{ selector: '[matTabContent]' },] },
];
/** @nocollapse */
MatTabContent.ctorParameters = () => [
{ type: TemplateRef }
];
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* Used to flag tab labels for use with the portal directive
*/
class MatTabLabel extends CdkPortal {
}
MatTabLabel.decorators = [
{ type: Directive, args: [{
selector: '[mat-tab-label], [matTabLabel]',
},] },
];
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
// Boilerplate for applying mixins to MatTab.
/**
* \@docs-private
*/
class MatTabBase {
}
/** @type {?} */
const _MatTabMixinBase = mixinDisabled(MatTabBase);
class MatTab extends _MatTabMixinBase {
/**
* @param {?} _viewContainerRef
*/
constructor(_viewContainerRef) {
super();
this._viewContainerRef = _viewContainerRef;
/**
* Plain text label for the tab, used when there is no template label.
*/
this.textLabel = '';
/**
* Portal that will be the hosted content of the tab
*/
this._contentPortal = null;
/**
* Emits whenever the internal state of the tab changes.
*/
this._stateChanges = new Subject();
/**
* The relatively indexed position where 0 represents the center, negative is left, and positive
* represents the right.
*/
this.position = null;
/**
* The initial relatively index origin of the tab if it was created and selected after there
* was already a selected tab. Provides context of what position the tab should originate from.
*/
this.origin = null;
/**
* Whether the tab is currently active.
*/
this.isActive = false;
}
/**
* \@docs-private
* @return {?}
*/
get content() {
return this._contentPortal;
}
/**
* @param {?} changes
* @return {?}
*/
ngOnChanges(changes) {
if (changes.hasOwnProperty('textLabel') || changes.hasOwnProperty('disabled')) {
this._stateChanges.next();
}
}
/**
* @return {?}
*/
ngOnDestroy() {
this._stateChanges.complete();
}
/**
* @return {?}
*/
ngOnInit() {
this._contentPortal = new TemplatePortal(this._explicitContent || this._implicitContent, this._viewContainerRef);
}
}
MatTab.decorators = [
{ type: Component, args: [{selector: 'mat-tab',
template: "<ng-template><ng-content></ng-content></ng-template>",
inputs: ['disabled'],
changeDetection: ChangeDetectionStrategy.OnPush,
encapsulation: ViewEncapsulation.None,
exportAs: 'matTab',
},] },
];
/** @nocollapse */
MatTab.ctorParameters = () => [
{ type: ViewContainerRef }
];
MatTab.propDecorators = {
templateLabel: [{ type: ContentChild, args: [MatTabLabel, { static: false },] }],
_explicitContent: [{ type: ContentChild, args: [MatTabContent, { read: TemplateRef, static: true },] }],
_implicitContent: [{ type: ViewChild, args: [TemplateRef, { static: true },] }],
textLabel: [{ type: Input, args: ['label',] }],
ariaLabel: [{ type: Input, args: ['aria-label',] }],
ariaLabelledby: [{ type: Input, args: ['aria-labelledby',] }]
};
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* Animations used by the Material tabs.
* \@docs-private
* @type {?}
*/
const matTabsAnimations = {
/**
* Animation translates a tab along the X axis.
*/
translateTab: trigger('translateTab', [
// Note: transitions to `none` instead of 0, because some browsers might blur the content.
state('center, void, left-origin-center, right-origin-center', style({ transform: 'none' })),
// If the tab is either on the left or right, we additionally add a `min-height` of 1px
// in order to ensure that the element has a height before its state changes. This is
// necessary because Chrome does seem to skip the transition in RTL mode if the element does
// not have a static height and is not rendered. See related issue: #9465
state('left', style({ transform: 'translate3d(-100%, 0, 0)', minHeight: '1px' })),
state('right', style({ transform: 'translate3d(100%, 0, 0)', minHeight: '1px' })),
transition('* => left, * => right, left => center, right => center', animate('{{animationDuration}} cubic-bezier(0.35, 0, 0.25, 1)')),
transition('void => left-origin-center', [
style({ transform: 'translate3d(-100%, 0, 0)' }),
animate('{{animationDuration}} cubic-bezier(0.35, 0, 0.25, 1)')
]),
transition('void => right-origin-center', [
style({ transform: 'translate3d(100%, 0, 0)' }),
animate('{{animationDuration}} cubic-bezier(0.35, 0, 0.25, 1)')
])
])
};
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* The portal host directive for the contents of the tab.
* \@docs-private
*/
class MatTabBodyPortal extends CdkPortalOutlet {
/**
* @param {?} componentFactoryResolver
* @param {?} viewContainerRef
* @param {?} _host
*/
constructor(componentFactoryResolver, viewContainerRef, _host) {
super(componentFactoryResolver, viewContainerRef);
this._host = _host;
/**
* Subscription to events for when the tab body begins centering.
*/
this._centeringSub = Subscription.EMPTY;
/**
* Subscription to events for when the tab body finishes leaving from center position.
*/
this._leavingSub = Subscription.EMPTY;
}
/**
* Set initial visibility or set up subscription for changing visibility.
* @return {?}
*/
ngOnInit() {
super.ngOnInit();
this._centeringSub = this._host._beforeCentering
.pipe(startWith(this._host._isCenterPosition(this._host._position)))
.subscribe((/**
* @param {?} isCentering
* @return {?}
*/
(isCentering) => {
if (isCentering && !this.hasAttached()) {
this.attach(this._host._content);
}
}));
this._leavingSub = this._host._afterLeavingCenter.subscribe((/**
* @return {?}
*/
() => {
this.detach();
}));
}
/**
* Clean up centering subscription.
* @return {?}
*/
ngOnDestroy() {
super.ngOnDestroy();
this._centeringSub.unsubscribe();
this._leavingSub.unsubscribe();
}
}
MatTabBodyPortal.decorators = [
{ type: Directive, args: [{
selector: '[matTabBodyHost]'
},] },
];
/** @nocollapse */
MatTabBodyPortal.ctorParameters = () => [
{ type: ComponentFactoryResolver },
{ type: ViewContainerRef },
{ type: MatTabBody, decorators: [{ type: Inject, args: [forwardRef((/**
* @return {?}
*/
() => MatTabBody)),] }] }
];
/**
* Base class with all of the `MatTabBody` functionality.
* @abstract
*/
// tslint:disable-next-line:class-name
class _MatTabBodyBase {
/**
* @param {?} _elementRef
* @param {?} _dir
* @param {?} changeDetectorRef
*/
constructor(_elementRef, _dir, changeDetectorRef) {
this._elementRef = _elementRef;
this._dir = _dir;
/**
* Subscription to the directionality change observable.
*/
this._dirChangeSubscription = Subscription.EMPTY;
/**
* Emits when an animation on the tab is complete.
*/
this._translateTabComplete = new Subject();
/**
* Event emitted when the tab begins to animate towards the center as the active tab.
*/
this._onCentering = new EventEmitter();
/**
* Event emitted before the centering of the tab begins.
*/
this._beforeCentering = new EventEmitter();
/**
* Event emitted before the centering of the tab begins.
*/
this._afterLeavingCenter = new EventEmitter();
/**
* Event emitted when the tab completes its animation towards the center.
*/
this._onCentered = new EventEmitter(true);
// Note that the default value will always be overwritten by `MatTabBody`, but we need one
// anyway to prevent the animations module from throwing an error if the body is used on its own.
/**
* Duration for the tab's animation.
*/
this.animationDuration = '500ms';
if (_dir) {
this._dirChangeSubscription = _dir.change.subscribe((/**
* @param {?} dir
* @return {?}
*/
(dir) => {
this._computePositionAnimationState(dir);
changeDetectorRef.markForCheck();
}));
}
// Ensure that we get unique animation events, because the `.done` callback can get
// invoked twice in some browsers. See https://github.com/angular/angular/issues/24084.
this._translateTabComplete.pipe(distinctUntilChanged((/**
* @param {?} x
* @param {?} y
* @return {?}
*/
(x, y) => {
return x.fromState === y.fromState && x.toState === y.toState;
}))).subscribe((/**
* @param {?} event
* @return {?}
*/
event => {
// If the transition to the center is complete, emit an event.
if (this._isCenterPosition(event.toState) && this._isCenterPosition(this._position)) {
this._onCentered.emit();
}
if (this._isCenterPosition(event.fromState) && !this._isCenterPosition(this._position)) {
this._afterLeavingCenter.emit();
}
}));
}
/**
* The shifted index position of the tab body, where zero represents the active center tab.
* @param {?} position
* @return {?}
*/
set position(position) {
this._positionIndex = position;
this._computePositionAnimationState();
}
/**
* After initialized, check if the content is centered and has an origin. If so, set the
* special position states that transition the tab from the left or right before centering.
* @return {?}
*/
ngOnInit() {
if (this._position == 'center' && this.origin != null) {
this._position = this._computePositionFromOrigin();
}
}
/**
* @return {?}
*/
ngOnDestroy() {
this._dirChangeSubscription.unsubscribe();
this._translateTabComplete.complete();
}
/**
* @param {?} event
* @return {?}
*/
_onTranslateTabStarted(event) {
/** @type {?} */
const isCentering = this._isCenterPosition(event.toState);
this._beforeCentering.emit(isCentering);
if (isCentering) {
this._onCentering.emit(this._elementRef.nativeElement.clientHeight);
}
}
/**
* The text direction of the containing app.
* @return {?}
*/
_getLayoutDirection() {
return this._dir && this._dir.value === 'rtl' ? 'rtl' : 'ltr';
}
/**
* Whether the provided position state is considered center, regardless of origin.
* @param {?} position
* @return {?}
*/
_isCenterPosition(position) {
return position == 'center' ||
position == 'left-origin-center' ||
position == 'right-origin-center';
}
/**
* Computes the position state that will be used for the tab-body animation trigger.
* @private
* @param {?=} dir
* @return {?}
*/
_computePositionAnimationState(dir = this._getLayoutDirection()) {
if (this._positionIndex < 0) {
this._position = dir == 'ltr' ? 'left' : 'right';
}
else if (this._positionIndex > 0) {
this._position = dir == 'ltr' ? 'right' : 'left';
}
else {
this._position = 'center';
}
}
/**
* Computes the position state based on the specified origin position. This is used if the
* tab is becoming visible immediately after creation.
* @private
* @return {?}
*/
_computePositionFromOrigin() {
/** @type {?} */
const dir = this._getLayoutDirection();
if ((dir == 'ltr' && this.origin <= 0) || (dir == 'rtl' && this.origin > 0)) {
return 'left-origin-center';
}
return 'right-origin-center';
}
}
/** @nocollapse */
_MatTabBodyBase.ctorParameters = () => [
{ type: ElementRef },
{ type: Directionality, decorators: [{ type: Optional }] },
{ type: ChangeDetectorRef }
];
_MatTabBodyBase.propDecorators = {
_onCentering: [{ type: Output }],
_beforeCentering: [{ type: Output }],
_afterLeavingCenter: [{ type: Output }],
_onCentered: [{ type: Output }],
_content: [{ type: Input, args: ['content',] }],
origin: [{ type: Input }],
animationDuration: [{ type: Input }],
position: [{ type: Input }]
};
/**
* Wrapper for the contents of a tab.
* \@docs-private
*/
class MatTabBody extends _MatTabBodyBase {
/**
* @param {?} elementRef
* @param {?} dir
* @param {?} changeDetectorRef
*/
constructor(elementRef, dir, changeDetectorRef) {
super(elementRef, dir, changeDetectorRef);
}
}
MatTabBody.decorators = [
{ type: Component, args: [{selector: 'mat-tab-body',
template: "<div class=\"mat-tab-body-content\" #content [@translateTab]=\"{ value: _position, params: {animationDuration: animationDuration} }\" (@translateTab.start)=\"_onTranslateTabStarted($event)\" (@translateTab.done)=\"_translateTabComplete.next($event)\"><ng-template matTabBodyHost></ng-template></div>",
styles: [".mat-tab-body-content{height:100%;overflow:auto}.mat-tab-group-dynamic-height .mat-tab-body-content{overflow:hidden}"],
encapsulation: ViewEncapsulation.None,
changeDetection: ChangeDetectionStrategy.OnPush,
animations: [matTabsAnimations.translateTab],
host: {
'class': 'mat-tab-body',
}
},] },
];
/** @nocollapse */
MatTabBody.ctorParameters = () => [
{ type: ElementRef },
{ type: Directionality, decorators: [{ type: Optional }] },
{ type: ChangeDetectorRef }
];
MatTabBody.propDecorators = {
_portalHost: [{ type: ViewChild, args: [PortalHostDirective, { static: false },] }]
};
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* Used to generate unique ID's for each tab component
* @type {?}
*/
let nextId = 0;
/**
* A simple change event emitted on focus or selection changes.
*/
class MatTabChangeEvent {
}
/**
* Injection token that can be used to provide the default options the tabs module.
* @type {?}
*/
const MAT_TABS_CONFIG = new InjectionToken('MAT_TABS_CONFIG');
// Boilerplate for applying mixins to MatTabGroup.
/**
* \@docs-private
*/
class MatTabGroupMixinBase {
/**
* @param {?} _elementRef
*/
constructor(_elementRef) {
this._elementRef = _elementRef;
}
}
/** @type {?} */
const _MatTabGroupMixinBase = mixinColor(mixinDisableRipple(MatTabGroupMixinBase), 'primary');
/**
* Base class with all of the `MatTabGroupBase` functionality.
* @abstract
*/
// tslint:disable-next-line:class-name
class _MatTabGroupBase extends _MatTabGroupMixinBase {
/**
* @param {?} elementRef
* @param {?} _changeDetectorRef
* @param {?=} defaultConfig
* @param {?=} _animationMode
*/
constructor(elementRef, _changeDetectorRef, defaultConfig, _animationMode) {
super(elementRef);
this._changeDetectorRef = _changeDetectorRef;
this._animationMode = _animationMode;
/**
* The tab index that should be selected after the content has been checked.
*/
this._indexToSelect = 0;
/**
* Snapshot of the height of the tab body wrapper before another tab is activated.
*/
this._tabBodyWrapperHeight = 0;
/**
* Subscription to tabs being added/removed.
*/
this._tabsSubscription = Subscription.EMPTY;
/**
* Subscription to changes in the tab labels.
*/
this._tabLabelSubscription = Subscription.EMPTY;
this._dynamicHeight = false;
this._selectedIndex = null;
/**
* Position of the tab header.
*/
this.headerPosition = 'above';
/**
* Output to enable support for two-way binding on `[(selectedIndex)]`
*/
this.selectedIndexChange = new EventEmitter();
/**
* Event emitted when focus has changed within a tab group.
*/
this.focusChange = new EventEmitter();
/**
* Event emitted when the body animation has completed
*/
this.animationDone = new EventEmitter();
/**
* Event emitted when the tab selection has changed.
*/
this.selectedTabChange = new EventEmitter(true);
this._groupId = nextId++;
this.animationDuration = defaultConfig && defaultConfig.animationDuration ?
defaultConfig.animationDuration : '500ms';
}
/**
* Whether the tab group should grow to the size of the active tab.
* @return {?}
*/
get dynamicHeight() { return this._dynamicHeight; }
/**
* @param {?} value
* @return {?}
*/
set dynamicHeight(value) { this._dynamicHeight = coerceBooleanProperty(value); }
/**
* The index of the active tab.
* @return {?}
*/
get selectedIndex() { return this._selectedIndex; }
/**
* @param {?} value
* @return {?}
*/
set selectedIndex(value) {
this._indexToSelect = coerceNumberProperty(value, null);
}
/**
* Duration for the tab animation. Will be normalized to milliseconds if no units are set.
* @return {?}
*/
get animationDuration() { return this._animationDuration; }
/**
* @param {?} value
* @return {?}
*/
set animationDuration(value) {
this._animationDuration = /^\d+$/.test(value) ? value + 'ms' : value;
}
/**
* Background color of the tab group.
* @return {?}
*/
get backgroundColor() { return this._backgroundColor; }
/**
* @param {?} value
* @return {?}
*/
set backgroundColor(value) {
/** @type {?} */
const nativeElement = this._elementRef.nativeElement;
nativeElement.classList.remove(`mat-background-${this.backgroundColor}`);
if (value) {
nativeElement.classList.add(`mat-background-${value}`);
}
this._backgroundColor = value;
}
/**
* After the content is checked, this component knows what tabs have been defined
* and what the selected index should be. This is where we can know exactly what position
* each tab should be in according to the new selected index, and additionally we know how
* a new selected tab should transition in (from the left or right).
* @return {?}
*/
ngAfterContentChecked() {
// Don't clamp the `indexToSelect` immediately in the setter because it can happen that
// the amount of tabs changes before the actual change detection runs.
/** @type {?} */
const indexToSelect = this._indexToSelect = this._clampTabIndex(this._indexToSelect);
// If there is a change in selected index, emit a change event. Should not trigger if
// the selected index has not yet been initialized.
if (this._selectedIndex != indexToSelect) {
/** @type {?} */
const isFirstRun = this._selectedIndex == null;
if (!isFirstRun) {
this.selectedTabChange.emit(this._createChangeEvent(indexToSelect));
}
// Changing these values after change detection has run
// since the checked content may contain references to them.
Promise.resolve().then((/**
* @return {?}
*/
() => {
this._tabs.forEach((/**
* @param {?} tab
* @param {?} index
* @return {?}
*/
(tab, index) => tab.isActive = index === indexToSelect));
if (!isFirstRun) {
this.selectedIndexChange.emit(indexToSelect);
}
}));
}
// Setup the position for each tab and optionally setup an origin on the next selected tab.
this._tabs.forEach((/**
* @param {?} tab
* @param {?} index
* @return {?}
*/
(tab, index) => {
tab.position = index - indexToSelect;
// If there is already a selected tab, then set up an origin for the next selected tab
// if it doesn't have one already.
if (this._selectedIndex != null && tab.position == 0 && !tab.origin) {
tab.origin = indexToSelect - this._selectedIndex;
}
}));
if (this._selectedIndex !== indexToSelect) {
this._selectedIndex = indexToSelect;
this._changeDetectorRef.markForCheck();
}
}
/**
* @return {?}
*/
ngAfterContentInit() {
this._subscribeToTabLabels();
// Subscribe to changes in the amount of tabs, in order to be
// able to re-render the content as new tabs are added or removed.
this._tabsSubscription = this._tabs.changes.subscribe((/**
* @return {?}
*/
() => {
/** @type {?} */
const indexToSelect = this._clampTabIndex(this._indexToSelect);
// Maintain the previously-selected tab if a new tab is added or removed and there is no
// explicit change that selects a different tab.
if (indexToSelect === this._selectedIndex) {
/** @type {?} */
const tabs = this._tabs.toArray();
for (let i = 0; i < tabs.length; i++) {
if (tabs[i].isActive) {
// Assign both to the `_indexToSelect` and `_selectedIndex` so we don't fire a changed
// event, otherwise the consumer may end up in an infinite loop in some edge cases like
// adding a tab within the `selectedIndexChange` event.
this._indexToSelect = this._selectedIndex = i;
break;
}
}
}
this._subscribeToTabLabels();
this._changeDetectorRef.markForCheck();
}));
}
/**
* @return {?}
*/
ngOnDestroy() {
this._tabsSubscription.unsubscribe();
this._tabLabelSubscription.unsubscribe();
}
/**
* Re-aligns the ink bar to the selected tab element.
* @return {?}
*/
realignInkBar() {
if (this._tabHeader) {
this._tabHeader._alignInkBarToSelectedTab();
}
}
/**
* @param {?} index
* @return {?}
*/
_focusChanged(index) {
this.focusChange.emit(this._createChangeEvent(index));
}
/**
* @private
* @param {?} index
* @return {?}
*/
_createChangeEvent(index) {
/** @type {?} */
const event = new MatTabChangeEvent;
event.index = index;
if (this._tabs && this._tabs.length) {
event.tab = this._tabs.toArray()[index];
}
return event;
}
/**
* Subscribes to changes in the tab labels. This is needed, because the \@Input for the label is
* on the MatTab component, whereas the data binding is inside the MatTabGroup. In order for the
* binding to be updated, we need to subscribe to changes in it and trigger change detection
* manually.
* @private
* @return {?}
*/
_subscribeToTabLabels() {
if (this._tabLabelSubscription) {
this._tabLabelSubscription.unsubscribe();
}
this._tabLabelSubscription = merge(...this._tabs.map((/**
* @param {?} tab
* @return {?}
*/
tab => tab._stateChanges)))
.subscribe((/**
* @return {?}
*/
() => this._changeDetectorRef.markForCheck()));
}
/**
* Clamps the given index to the bounds of 0 and the tabs length.
* @private
* @param {?} index
* @return {?}
*/
_clampTabIndex(index) {
// Note the `|| 0`, which ensures that values like NaN can't get through
// and which would otherwise throw the component into an infinite loop
// (since Math.max(NaN, 0) === NaN).
return Math.min(this._tabs.length - 1, Math.max(index || 0, 0));
}
/**
* Returns a unique id for each tab label element
* @param {?} i
* @return {?}
*/
_getTabLabelId(i) {
return `mat-tab-label-${this._groupId}-${i}`;
}
/**
* Returns a unique id for each tab content element
* @param {?} i
* @return {?}
*/
_getTabContentId(i) {
return `mat-tab-content-${this._groupId}-${i}`;
}
/**
* Sets the height of the body wrapper to the height of the activating tab if dynamic
* height property is true.
* @param {?} tabHeight
* @return {?}
*/
_setTabBodyWrapperHeight(tabHeight) {
if (!this._dynamicHeight || !this._tabBodyWrapperHeight) {
return;
}
/** @type {?} */
const wrapper = this._tabBodyWrapper.nativeElement;
wrapper.style.height = this._tabBodyWrapperHeight + 'px';
// This conditional forces the browser to paint the height so that
// the animation to the new height can have an origin.
if (this._tabBodyWrapper.nativeElement.offsetHeight) {
wrapper.style.height = tabHeight + 'px';
}
}
/**
* Removes the height of the tab body wrapper.
* @return {?}
*/
_removeTabBodyWrapperHeight() {
/** @type {?} */
const wrapper = this._tabBodyWrapper.nativeElement;
this._tabBodyWrapperHeight = wrapper.clientHeight;
wrapper.style.height = '';
this.animationDone.emit();
}
/**
* Handle click events, setting new selected index if appropriate.
* @param {?} tab
* @param {?} tabHeader
* @param {?} index
* @return {?}
*/
_handleClick(tab, tabHeader, index) {
if (!tab.disabled) {
this.selectedIndex = tabHeader.focusIndex = index;
}
}
/**
* Retrieves the tabindex for the tab.
* @param {?} tab
* @param {?} idx
* @return {?}
*/
_getTabIndex(tab, idx) {
if (tab.disabled) {
return null;
}
return this.selectedIndex === idx ? 0 : -1;
}
}
/** @nocollapse */
_MatTabGroupBase.ctorParameters = () => [
{ type: ElementRef },
{ type: ChangeDetectorRef },
{ type: undefined, decorators: [{ type: Inject, args: [MAT_TABS_CONFIG,] }, { type: Optional }] },
{ type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] }
];
_MatTabGroupBase.propDecorators = {
dynamicHeight: [{ type: Input }],
selectedIndex: [{ type: Input }],
headerPosition: [{ type: Input }],
animationDuration: [{ type: Input }],
backgroundColor: [{ type: Input }],
selectedIndexChange: [{ type: Output }],
focusChange: [{ type: Output }],
animationDone: [{ type: Output }],
selectedTabChange: [{ type: Output }]
};
/**
* Material design tab-group component. Supports basic tab pairs (label + content) and includes
* animated ink-bar, keyboard navigation, and screen reader.
* See: https://material.io/design/components/tabs.html
*/
class MatTabGroup extends _MatTabGroupBase {
/**
* @param {?} elementRef
* @param {?} changeDetectorRef
* @param {?=} defaultConfig
* @param {?=} animationMode
*/
constructor(elementRef, changeDetectorRef, defaultConfig, animationMode) {
super(elementRef, changeDetectorRef, defaultConfig, animationMode);
}
}
MatTabGroup.decorators = [
{ type: Component, args: [{selector: 'mat-tab-group',
exportAs: 'matTabGroup',
template: "<mat-tab-header #tabHeader [selectedIndex]=\"selectedIndex\" [disableRipple]=\"disableRipple\" (indexFocused)=\"_focusChanged($event)\" (selectFocusedIndex)=\"selectedIndex = $event\"><div class=\"mat-tab-label\" role=\"tab\" matTabLabelWrapper mat-ripple cdkMonitorElementFocus *ngFor=\"let tab of _tabs; let i = index\" [id]=\"_getTabLabelId(i)\" [attr.tabIndex]=\"_getTabIndex(tab, i)\" [attr.aria-posinset]=\"i + 1\" [attr.aria-setsize]=\"_tabs.length\" [attr.aria-controls]=\"_getTabContentId(i)\" [attr.aria-selected]=\"selectedIndex == i\" [attr.aria-label]=\"tab.ariaLabel || null\" [attr.aria-labelledby]=\"(!tab.ariaLabel && tab.ariaLabelledby) ? tab.ariaLabelledby : null\" [class.mat-tab-label-active]=\"selectedIndex == i\" [disabled]=\"tab.disabled\" [matRippleDisabled]=\"tab.disabled || disableRipple\" (click)=\"_handleClick(tab, tabHeader, i)\"><div class=\"mat-tab-label-content\"><ng-template [ngIf]=\"tab.templateLabel\"><ng-template [cdkPortalOutlet]=\"tab.templateLabel\"></ng-template></ng-template><ng-template [ngIf]=\"!tab.templateLabel\">{{tab.textLabel}}</ng-template></div></div></mat-tab-header><div class=\"mat-tab-body-wrapper\" [class._mat-animation-noopable]=\"_animationMode === 'NoopAnimations'\" #tabBodyWrapper><mat-tab-body role=\"tabpanel\" *ngFor=\"let tab of _tabs; let i = index\" [id]=\"_getTabContentId(i)\" [attr.aria-labelledby]=\"_getTabLabelId(i)\" [class.mat-tab-body-active]=\"selectedIndex == i\" [content]=\"tab.content\" [position]=\"tab.position\" [origin]=\"tab.origin\" [animationDuration]=\"animationDuration\" (_onCentered)=\"_removeTabBodyWrapperHeight()\" (_onCentering)=\"_setTabBodyWrapperHeight($event)\"></mat-tab-body></div>",
styles: [".mat-tab-group{display:flex;flex-direction:column}.mat-tab-group.mat-tab-group-inverted-header{flex-direction:column-reverse}.mat-tab-label{height:48px;padding:0 24px;cursor:pointer;box-sizing:border-box;opacity:.6;min-width:160px;text-align:center;display:inline-flex;justify-content:center;align-items:center;white-space:nowrap;position:relative}.mat-tab-label:focus{outline:0}.mat-tab-label:focus:not(.mat-tab-disabled){opacity:1}@media (-ms-high-contrast:active){.mat-tab-label:focus{outline:dotted 2px}}.mat-tab-label.mat-tab-disabled{cursor:default}@media (-ms-high-contrast:active){.mat-tab-label.mat-tab-disabled{opacity:.5}}.mat-tab-label .mat-tab-label-content{display:inline-flex;justify-content:center;align-items:center;white-space:nowrap}@media (-ms-high-contrast:active){.mat-tab-label{opacity:1}}@media (max-width:599px){.mat-tab-label{padding:0 12px}}@media (max-width:959px){.mat-tab-label{padding:0 12px}}.mat-tab-group[mat-stretch-tabs]>.mat-tab-header .mat-tab-label{flex-basis:0;flex-grow:1}.mat-tab-body-wrapper{position:relative;overflow:hidden;display:flex;transition:height .5s cubic-bezier(.35,0,.25,1)}._mat-animation-noopable.mat-tab-body-wrapper{transition:none;animation:none}.mat-tab-body{top:0;left:0;right:0;bottom:0;position:absolute;display:block;overflow:hidden;flex-basis:100%}.mat-tab-body.mat-tab-body-active{position:relative;overflow-x:hidden;overflow-y:auto;z-index:1;flex-grow:1}.mat-tab-group.mat-tab-group-dynamic-height .mat-tab-body.mat-tab-body-active{overflow-y:hidden}"],
encapsulation: ViewEncapsulation.None,
changeDetection: ChangeDetectionStrategy.OnPush,
inputs: ['color', 'disableRipple'],
host: {
'class': 'mat-tab-group',
'[class.mat-tab-group-dynamic-height]': 'dynamicHeight',
'[class.mat-tab-group-inverted-header]': 'headerPosition === "below"',
},
},] },
];
/** @nocollapse */
MatTabGroup.ctorParameters = () => [
{ type: ElementRef },
{ type: ChangeDetectorRef },
{ type: undefined, decorators: [{ type: Inject, args: [MAT_TABS_CONFIG,] }, { type: Optional }] },
{ type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] }
];
MatTabGroup.propDecorators = {
_tabs: [{ type: ContentChildren, args: [MatTab,] }],
_tabBodyWrapper: [{ type: ViewChild, args: ['tabBodyWrapper', { static: false },] }],
_tabHeader: [{ type: ViewChild, args: ['tabHeader', { static: false },] }]
};
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
// Boilerplate for applying mixins to MatTabLabelWrapper.
/**
* \@docs-private
*/
class MatTabLabelWrapperBase {
}
/** @type {?} */
const _MatTabLabelWrapperMixinBase = mixinDisabled(MatTabLabelWrapperBase);
/**
* Used in the `mat-tab-group` view to display tab labels.
* \@docs-private
*/
class MatTabLabelWrapper extends _MatTabLabelWrapperMixinBase {
/**
* @param {?} elementRef
*/
constructor(elementRef) {
super();
this.elementRef = elementRef;
}
/**
* Sets focus on the wrapper element
* @return {?}
*/
focus() {
this.elementRef.nativeElement.focus();
}
/**
* @return {?}
*/
getOffsetLeft() {
return this.elementRef.nativeElement.offsetLeft;
}
/**
* @return {?}
*/
getOffsetWidth() {
return this.elementRef.nativeElement.offsetWidth;
}
}
MatTabLabelWrapper.decorators = [
{ type: Directive, args: [{
selector: '[matTabLabelWrapper]',
inputs: ['disabled'],
host: {
'[class.mat-tab-disabled]': 'disabled',
'[attr.aria-disabled]': '!!disabled',
}
},] },
];
/** @nocollapse */
MatTabLabelWrapper.ctorParameters = () => [
{ type: ElementRef }
];
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* Config used to bind passive event listeners
* @type {?}
*/
const passiveEventListenerOptions = (/** @type {?} */ (normalizePassiveListenerOptions({ passive: true })));
/**
* The distance in pixels that will be overshot when scrolling a tab label into view. This helps
* provide a small affordance to the label next to it.
* @type {?}
*/
const EXAGGERATED_OVERSCROLL = 60;
/**
* Amount of milliseconds to wait before starting to scroll the header automatically.
* Set a little conservatively in order to handle fake events dispatched on touch devices.
* @type {?}
*/
const HEADER_SCROLL_DELAY = 650;
/**
* Interval in milliseconds at which to scroll the header
* while the user is holding their pointer.
* @type {?}
*/
const HEADER_SCROLL_INTERVAL = 100;
/**
* Base class for a tab header that supported pagination.
* @abstract
*/
class MatPaginatedTabHeader {
/**
* @param {?} _elementRef
* @param {?} _changeDetectorRef
* @param {?} _viewportRuler
* @param {?} _dir
* @param {?} _ngZone
* @param {?=} _platform
* @param {?=} _animationMode
*/
constructor(_elementRef, _changeDetectorRef, _viewportRuler, _dir, _ngZone, _platform, _animationMode) {
this._elementRef = _elementRef;
this._changeDetectorRef = _changeDetectorRef;
this._viewportRuler = _viewportRuler;
this._dir = _dir;
this._ngZone = _ngZone;
this._platform = _platform;
this._animationMode = _animationMode;
/**
* The distance in pixels that the tab labels should be translated to the left.
*/
this._scrollDistance = 0;
/**
* Whether the header should scroll to the selected index after the view has been checked.
*/
this._selectedIndexChanged = false;
/**
* Emits when the component is destroyed.
*/
this._destroyed = new Subject();
/**
* Whether the controls for pagination should be displayed
*/
this._showPaginationControls = false;
/**
* Whether the tab list can be scrolled more towards the end of the tab label list.
*/
this._disableScrollAfter = true;
/**
* Whether the tab list can be scrolled more towards the beginning of the tab label list.
*/
this._disableScrollBefore = true;
/**
* Stream that will stop the automated scrolling.
*/
this._stopScrolling = new Subject();
this._selectedIndex = 0;
/**
* Event emitted when the option is selected.
*/
this.selectFocusedIndex = new EventEmitter();
/**
* Event emitted when a label is focused.
*/
this.indexFocused = new EventEmitter();
// Bind the `mouseleave` event on the outside since it doesn't change anything in the view.
_ngZone.runOutsideAngular((/**
* @return {?}
*/
() => {
fromEvent(_elementRef.nativeElement, 'mouseleave')
.pipe(takeUntil(this._destroyed))
.subscribe((/**
* @return {?}
*/
() => {
this._stopInterval();
}));
}));
}
/**
* The index of the active tab.
* @return {?}
*/
get selectedIndex() { return this._selectedIndex; }
/**
* @param {?} value
* @return {?}
*/
set selectedIndex(value) {
value = coerceNumberProperty(value);
if (this._selectedIndex != value) {
this._selectedIndexChanged = true;
this._selectedIndex = value;
if (this._keyManager) {
this._keyManager.updateActiveItemIndex(value);
}
}
}
/**
* @return {?}
*/
ngAfterViewInit() {
// We need to handle these events manually, because we want to bind passive event listeners.
fromEvent(this._previousPaginator.nativeElement, 'touchstart', passiveEventListenerOptions)
.pipe(takeUntil(this._destroyed))
.subscribe((/**
* @return {?}
*/
() => {
this._handlePaginatorPress('before');
}));
fromEvent(this._nextPaginator.nativeElement, 'touchstart', passiveEventListenerOptions)
.pipe(takeUntil(this._destroyed))
.subscribe((/**
* @return {?}
*/
() => {
this._handlePaginatorPress('after');
}));
}
/**
* @return {?}
*/
ngAfterContentInit() {
/** @type {?} */
const dirChange = this._dir ? this._dir.change : of(null);
/** @type {?} */
const resize = this._viewportRuler.change(150);
/** @type {?} */
const realign = (/**
* @return {?}
*/
() => {
this.updatePagination();
this._alignInkBarToSelectedTab();
});
this._keyManager = new FocusKeyManager(this._items)
.withHorizontalOrientation(this._getLayoutDirection())
.withWrap();
this._keyManager.updateActiveItem(0);
// Defer the first call in order to allow for slower browsers to lay out the elements.
// This helps in cases where the user lands directly on a page with paginated tabs.
typeof requestAnimationFrame !== 'undefined' ? requestAnimationFrame(realign) : realign();
// On dir change or window resize, realign the ink bar and update the orientation of
// the key manager if the direction has changed.
merge(dirChange, resize, this._items.changes).pipe(takeUntil(this._destroyed)).subscribe((/**
* @return {?}
*/
() => {
realign();
this._keyManager.withHorizontalOrientation(this._getLayoutDirection());
}));
// If there is a change in the focus key manager we need to emit the `indexFocused`
// event in order to provide a public event that notifies about focus changes. Also we realign
// the tabs container by scrolling the new focused tab into the visible section.
this._keyManager.change.pipe(takeUntil(this._destroyed)).subscribe((/**
* @param {?} newFocusIndex
* @return {?}
*/
newFocusIndex => {
this.indexFocused.emit(newFocusIndex);
this._setTabFocus(newFocusIndex);
}));
}
/**
* @return {?}
*/
ngAfterContentChecked() {
// If the number of tab labels have changed, check if scrolling should be enabled
if (this._tabLabelCount != this._items.length) {
this.updatePagination();
this._tabLabelCount = this._items.length;
this._changeDetectorRef.markForCheck();
}
// If the selected index has changed, scroll to the label and check if the scrolling controls
// should be disabled.
if (this._selectedIndexChanged) {
this._scrollToLabel(this._selectedIndex);
this._checkScrollingControls();
this._alignInkBarToSelectedTab();
this._selectedIndexChanged = false;
this._changeDetectorRef.markForCheck();
}
// If the scroll distance has been changed (tab selected, focused, scroll controls activated),
// then translate the header to reflect this.
if (this._scrollDistanceChanged) {
this._updateTabScrollPosition();
this._scrollDistanceChanged = false;
this._changeDetectorRef.markForCheck();
}
}
/**
* @return {?}
*/
ngOnDestroy() {
this._destroyed.next();
this._destroyed.complete();
this._stopScrolling.complete();
}
/**
* Handles keyboard events on the header.
* @param {?} event
* @return {?}
*/
_handleKeydown(event) {
// We don't handle any key bindings with a modifier key.
if (hasModifierKey(event)) {
return;
}
switch (event.keyCode) {
case HOME:
this._keyManager.setFirstItemActive();
event.preventDefault();
break;
case END:
this._keyManager.setLastItemActive();
event.preventDefault();
break;
case ENTER:
case SPACE:
this.selectFocusedIndex.emit(this.focusIndex);
this._itemSelected(event);
break;
default:
this._keyManager.onKeydown(event);
}
}
/**
* Callback for when the MutationObserver detects that the content has changed.
* @return {?}
*/
_onContentChanges() {
/** @type {?} */
const textContent = this._elementRef.nativeElement.textContent;
// We need to diff the text content of the header, because the MutationObserver callback
// will fire even if the text content didn't change which is inefficient and is prone
// to infinite loops if a poorly constructed expression is passed in (see #14249).
if (textContent !== this._currentTextContent) {
this._currentTextContent = textContent || '';
// The content observer runs outside the `NgZone` by default, which
// means that we need to bring the callback back in ourselves.
this._ngZone.run((/**
* @retu