source: trip-planner-front/node_modules/@angular/material/fesm2015/expansion.js@ eed0bf8

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1import { CdkAccordionItem, CdkAccordion, CdkAccordionModule } from '@angular/cdk/accordion';
2import { TemplatePortal, PortalModule } from '@angular/cdk/portal';
3import { DOCUMENT, CommonModule } from '@angular/common';
4import { InjectionToken, Directive, TemplateRef, EventEmitter, Component, ViewEncapsulation, ChangeDetectionStrategy, Optional, SkipSelf, Inject, ChangeDetectorRef, ViewContainerRef, Input, Output, ContentChild, ViewChild, Host, ElementRef, Attribute, QueryList, ContentChildren, NgModule } from '@angular/core';
5import { mixinTabIndex, MatCommonModule } from '@angular/material/core';
6import { coerceBooleanProperty } from '@angular/cdk/coercion';
7import { FocusMonitor, FocusKeyManager } from '@angular/cdk/a11y';
8import { distinctUntilChanged, startWith, filter, take } from 'rxjs/operators';
9import { ENTER, hasModifierKey, SPACE } from '@angular/cdk/keycodes';
10import { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';
11import { Subject, Subscription, EMPTY, merge } from 'rxjs';
12import { trigger, state, style, transition, animate } from '@angular/animations';
13import { UniqueSelectionDispatcher } from '@angular/cdk/collections';
14
15/**
16 * @license
17 * Copyright Google LLC All Rights Reserved.
18 *
19 * Use of this source code is governed by an MIT-style license that can be
20 * found in the LICENSE file at https://angular.io/license
21 */
22/**
23 * Token used to provide a `MatAccordion` to `MatExpansionPanel`.
24 * Used primarily to avoid circular imports between `MatAccordion` and `MatExpansionPanel`.
25 */
26const MAT_ACCORDION = new InjectionToken('MAT_ACCORDION');
27
28/**
29 * @license
30 * Copyright Google LLC All Rights Reserved.
31 *
32 * Use of this source code is governed by an MIT-style license that can be
33 * found in the LICENSE file at https://angular.io/license
34 */
35/** Time and timing curve for expansion panel animations. */
36// Note: Keep this in sync with the Sass variable for the panel header animation.
37const EXPANSION_PANEL_ANIMATION_TIMING = '225ms cubic-bezier(0.4,0.0,0.2,1)';
38/**
39 * Animations used by the Material expansion panel.
40 *
41 * A bug in angular animation's `state` when ViewContainers are moved using ViewContainerRef.move()
42 * causes the animation state of moved components to become `void` upon exit, and not update again
43 * upon reentry into the DOM. This can lead a to situation for the expansion panel where the state
44 * of the panel is `expanded` or `collapsed` but the animation state is `void`.
45 *
46 * To correctly handle animating to the next state, we animate between `void` and `collapsed` which
47 * are defined to have the same styles. Since angular animates from the current styles to the
48 * destination state's style definition, in situations where we are moving from `void`'s styles to
49 * `collapsed` this acts a noop since no style values change.
50 *
51 * In the case where angular's animation state is out of sync with the expansion panel's state, the
52 * expansion panel being `expanded` and angular animations being `void`, the animation from the
53 * `expanded`'s effective styles (though in a `void` animation state) to the collapsed state will
54 * occur as expected.
55 *
56 * Angular Bug: https://github.com/angular/angular/issues/18847
57 *
58 * @docs-private
59 */
60const matExpansionAnimations = {
61 /** Animation that rotates the indicator arrow. */
62 indicatorRotate: trigger('indicatorRotate', [
63 state('collapsed, void', style({ transform: 'rotate(0deg)' })),
64 state('expanded', style({ transform: 'rotate(180deg)' })),
65 transition('expanded <=> collapsed, void => collapsed', animate(EXPANSION_PANEL_ANIMATION_TIMING)),
66 ]),
67 /** Animation that expands and collapses the panel content. */
68 bodyExpansion: trigger('bodyExpansion', [
69 state('collapsed, void', style({ height: '0px', visibility: 'hidden' })),
70 state('expanded', style({ height: '*', visibility: 'visible' })),
71 transition('expanded <=> collapsed, void => collapsed', animate(EXPANSION_PANEL_ANIMATION_TIMING)),
72 ])
73};
74
75/**
76 * @license
77 * Copyright Google LLC All Rights Reserved.
78 *
79 * Use of this source code is governed by an MIT-style license that can be
80 * found in the LICENSE file at https://angular.io/license
81 */
82/**
83 * Expansion panel content that will be rendered lazily
84 * after the panel is opened for the first time.
85 */
86class MatExpansionPanelContent {
87 constructor(_template) {
88 this._template = _template;
89 }
90}
91MatExpansionPanelContent.decorators = [
92 { type: Directive, args: [{
93 selector: 'ng-template[matExpansionPanelContent]'
94 },] }
95];
96MatExpansionPanelContent.ctorParameters = () => [
97 { type: TemplateRef }
98];
99
100/**
101 * @license
102 * Copyright Google LLC All Rights Reserved.
103 *
104 * Use of this source code is governed by an MIT-style license that can be
105 * found in the LICENSE file at https://angular.io/license
106 */
107/** Counter for generating unique element ids. */
108let uniqueId = 0;
109/**
110 * Injection token that can be used to configure the default
111 * options for the expansion panel component.
112 */
113const MAT_EXPANSION_PANEL_DEFAULT_OPTIONS = new InjectionToken('MAT_EXPANSION_PANEL_DEFAULT_OPTIONS');
114const ɵ0 = undefined;
115/**
116 * This component can be used as a single element to show expandable content, or as one of
117 * multiple children of an element with the MatAccordion directive attached.
118 */
119class MatExpansionPanel extends CdkAccordionItem {
120 constructor(accordion, _changeDetectorRef, _uniqueSelectionDispatcher, _viewContainerRef, _document, _animationMode, defaultOptions) {
121 super(accordion, _changeDetectorRef, _uniqueSelectionDispatcher);
122 this._viewContainerRef = _viewContainerRef;
123 this._animationMode = _animationMode;
124 this._hideToggle = false;
125 /** An event emitted after the body's expansion animation happens. */
126 this.afterExpand = new EventEmitter();
127 /** An event emitted after the body's collapse animation happens. */
128 this.afterCollapse = new EventEmitter();
129 /** Stream that emits for changes in `@Input` properties. */
130 this._inputChanges = new Subject();
131 /** ID for the associated header element. Used for a11y labelling. */
132 this._headerId = `mat-expansion-panel-header-${uniqueId++}`;
133 /** Stream of body animation done events. */
134 this._bodyAnimationDone = new Subject();
135 this.accordion = accordion;
136 this._document = _document;
137 // We need a Subject with distinctUntilChanged, because the `done` event
138 // fires twice on some browsers. See https://github.com/angular/angular/issues/24084
139 this._bodyAnimationDone.pipe(distinctUntilChanged((x, y) => {
140 return x.fromState === y.fromState && x.toState === y.toState;
141 })).subscribe(event => {
142 if (event.fromState !== 'void') {
143 if (event.toState === 'expanded') {
144 this.afterExpand.emit();
145 }
146 else if (event.toState === 'collapsed') {
147 this.afterCollapse.emit();
148 }
149 }
150 });
151 if (defaultOptions) {
152 this.hideToggle = defaultOptions.hideToggle;
153 }
154 }
155 /** Whether the toggle indicator should be hidden. */
156 get hideToggle() {
157 return this._hideToggle || (this.accordion && this.accordion.hideToggle);
158 }
159 set hideToggle(value) {
160 this._hideToggle = coerceBooleanProperty(value);
161 }
162 /** The position of the expansion indicator. */
163 get togglePosition() {
164 return this._togglePosition || (this.accordion && this.accordion.togglePosition);
165 }
166 set togglePosition(value) {
167 this._togglePosition = value;
168 }
169 /** Determines whether the expansion panel should have spacing between it and its siblings. */
170 _hasSpacing() {
171 if (this.accordion) {
172 return this.expanded && this.accordion.displayMode === 'default';
173 }
174 return false;
175 }
176 /** Gets the expanded state string. */
177 _getExpandedState() {
178 return this.expanded ? 'expanded' : 'collapsed';
179 }
180 /** Toggles the expanded state of the expansion panel. */
181 toggle() {
182 this.expanded = !this.expanded;
183 }
184 /** Sets the expanded state of the expansion panel to false. */
185 close() {
186 this.expanded = false;
187 }
188 /** Sets the expanded state of the expansion panel to true. */
189 open() {
190 this.expanded = true;
191 }
192 ngAfterContentInit() {
193 if (this._lazyContent) {
194 // Render the content as soon as the panel becomes open.
195 this.opened.pipe(startWith(null), filter(() => this.expanded && !this._portal), take(1)).subscribe(() => {
196 this._portal = new TemplatePortal(this._lazyContent._template, this._viewContainerRef);
197 });
198 }
199 }
200 ngOnChanges(changes) {
201 this._inputChanges.next(changes);
202 }
203 ngOnDestroy() {
204 super.ngOnDestroy();
205 this._bodyAnimationDone.complete();
206 this._inputChanges.complete();
207 }
208 /** Checks whether the expansion panel's content contains the currently-focused element. */
209 _containsFocus() {
210 if (this._body) {
211 const focusedElement = this._document.activeElement;
212 const bodyElement = this._body.nativeElement;
213 return focusedElement === bodyElement || bodyElement.contains(focusedElement);
214 }
215 return false;
216 }
217}
218MatExpansionPanel.decorators = [
219 { type: Component, args: [{
220 selector: 'mat-expansion-panel',
221 exportAs: 'matExpansionPanel',
222 template: "<ng-content select=\"mat-expansion-panel-header\"></ng-content>\n<div class=\"mat-expansion-panel-content\"\n role=\"region\"\n [@bodyExpansion]=\"_getExpandedState()\"\n (@bodyExpansion.done)=\"_bodyAnimationDone.next($event)\"\n [attr.aria-labelledby]=\"_headerId\"\n [id]=\"id\"\n #body>\n <div class=\"mat-expansion-panel-body\">\n <ng-content></ng-content>\n <ng-template [cdkPortalOutlet]=\"_portal\"></ng-template>\n </div>\n <ng-content select=\"mat-action-row\"></ng-content>\n</div>\n",
223 encapsulation: ViewEncapsulation.None,
224 changeDetection: ChangeDetectionStrategy.OnPush,
225 inputs: ['disabled', 'expanded'],
226 outputs: ['opened', 'closed', 'expandedChange'],
227 animations: [matExpansionAnimations.bodyExpansion],
228 providers: [
229 // Provide MatAccordion as undefined to prevent nested expansion panels from registering
230 // to the same accordion.
231 { provide: MAT_ACCORDION, useValue: ɵ0 },
232 ],
233 host: {
234 'class': 'mat-expansion-panel',
235 '[class.mat-expanded]': 'expanded',
236 '[class._mat-animation-noopable]': '_animationMode === "NoopAnimations"',
237 '[class.mat-expansion-panel-spacing]': '_hasSpacing()',
238 },
239 styles: [".mat-expansion-panel{box-sizing:content-box;display:block;margin:0;border-radius:4px;overflow:hidden;transition:margin 225ms cubic-bezier(0.4, 0, 0.2, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);position:relative}.mat-accordion .mat-expansion-panel:not(.mat-expanded),.mat-accordion .mat-expansion-panel:not(.mat-expansion-panel-spacing){border-radius:0}.mat-accordion .mat-expansion-panel:first-of-type{border-top-right-radius:4px;border-top-left-radius:4px}.mat-accordion .mat-expansion-panel:last-of-type{border-bottom-right-radius:4px;border-bottom-left-radius:4px}.cdk-high-contrast-active .mat-expansion-panel{outline:solid 1px}.mat-expansion-panel.ng-animate-disabled,.ng-animate-disabled .mat-expansion-panel,.mat-expansion-panel._mat-animation-noopable{transition:none}.mat-expansion-panel-content{display:flex;flex-direction:column;overflow:visible}.mat-expansion-panel-body{padding:0 24px 16px}.mat-expansion-panel-spacing{margin:16px 0}.mat-accordion>.mat-expansion-panel-spacing:first-child,.mat-accordion>*:first-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-top:0}.mat-accordion>.mat-expansion-panel-spacing:last-child,.mat-accordion>*:last-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-bottom:0}.mat-action-row{border-top-style:solid;border-top-width:1px;display:flex;flex-direction:row;justify-content:flex-end;padding:16px 8px 16px 24px}.mat-action-row button.mat-button-base,.mat-action-row button.mat-mdc-button-base{margin-left:8px}[dir=rtl] .mat-action-row button.mat-button-base,[dir=rtl] .mat-action-row button.mat-mdc-button-base{margin-left:0;margin-right:8px}\n"]
240 },] }
241];
242MatExpansionPanel.ctorParameters = () => [
243 { type: undefined, decorators: [{ type: Optional }, { type: SkipSelf }, { type: Inject, args: [MAT_ACCORDION,] }] },
244 { type: ChangeDetectorRef },
245 { type: UniqueSelectionDispatcher },
246 { type: ViewContainerRef },
247 { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
248 { type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] },
249 { type: undefined, decorators: [{ type: Inject, args: [MAT_EXPANSION_PANEL_DEFAULT_OPTIONS,] }, { type: Optional }] }
250];
251MatExpansionPanel.propDecorators = {
252 hideToggle: [{ type: Input }],
253 togglePosition: [{ type: Input }],
254 afterExpand: [{ type: Output }],
255 afterCollapse: [{ type: Output }],
256 _lazyContent: [{ type: ContentChild, args: [MatExpansionPanelContent,] }],
257 _body: [{ type: ViewChild, args: ['body',] }]
258};
259/**
260 * Actions of a `<mat-expansion-panel>`.
261 */
262class MatExpansionPanelActionRow {
263}
264MatExpansionPanelActionRow.decorators = [
265 { type: Directive, args: [{
266 selector: 'mat-action-row',
267 host: {
268 class: 'mat-action-row'
269 }
270 },] }
271];
272
273/**
274 * @license
275 * Copyright Google LLC All Rights Reserved.
276 *
277 * Use of this source code is governed by an MIT-style license that can be
278 * found in the LICENSE file at https://angular.io/license
279 */
280// Boilerplate for applying mixins to MatExpansionPanelHeader.
281/** @docs-private */
282class MatExpansionPanelHeaderBase {
283}
284const _MatExpansionPanelHeaderMixinBase = mixinTabIndex(MatExpansionPanelHeaderBase);
285/**
286 * Header element of a `<mat-expansion-panel>`.
287 */
288class MatExpansionPanelHeader extends _MatExpansionPanelHeaderMixinBase {
289 constructor(panel, _element, _focusMonitor, _changeDetectorRef, defaultOptions, _animationMode, tabIndex) {
290 super();
291 this.panel = panel;
292 this._element = _element;
293 this._focusMonitor = _focusMonitor;
294 this._changeDetectorRef = _changeDetectorRef;
295 this._animationMode = _animationMode;
296 this._parentChangeSubscription = Subscription.EMPTY;
297 const accordionHideToggleChange = panel.accordion ?
298 panel.accordion._stateChanges.pipe(filter(changes => !!(changes['hideToggle'] || changes['togglePosition']))) :
299 EMPTY;
300 this.tabIndex = parseInt(tabIndex || '') || 0;
301 // Since the toggle state depends on an @Input on the panel, we
302 // need to subscribe and trigger change detection manually.
303 this._parentChangeSubscription =
304 merge(panel.opened, panel.closed, accordionHideToggleChange, panel._inputChanges.pipe(filter(changes => {
305 return !!(changes['hideToggle'] ||
306 changes['disabled'] ||
307 changes['togglePosition']);
308 })))
309 .subscribe(() => this._changeDetectorRef.markForCheck());
310 // Avoids focus being lost if the panel contained the focused element and was closed.
311 panel.closed
312 .pipe(filter(() => panel._containsFocus()))
313 .subscribe(() => _focusMonitor.focusVia(_element, 'program'));
314 if (defaultOptions) {
315 this.expandedHeight = defaultOptions.expandedHeight;
316 this.collapsedHeight = defaultOptions.collapsedHeight;
317 }
318 }
319 /**
320 * Whether the associated panel is disabled. Implemented as a part of `FocusableOption`.
321 * @docs-private
322 */
323 get disabled() {
324 return this.panel.disabled;
325 }
326 /** Toggles the expanded state of the panel. */
327 _toggle() {
328 if (!this.disabled) {
329 this.panel.toggle();
330 }
331 }
332 /** Gets whether the panel is expanded. */
333 _isExpanded() {
334 return this.panel.expanded;
335 }
336 /** Gets the expanded state string of the panel. */
337 _getExpandedState() {
338 return this.panel._getExpandedState();
339 }
340 /** Gets the panel id. */
341 _getPanelId() {
342 return this.panel.id;
343 }
344 /** Gets the toggle position for the header. */
345 _getTogglePosition() {
346 return this.panel.togglePosition;
347 }
348 /** Gets whether the expand indicator should be shown. */
349 _showToggle() {
350 return !this.panel.hideToggle && !this.panel.disabled;
351 }
352 /**
353 * Gets the current height of the header. Null if no custom height has been
354 * specified, and if the default height from the stylesheet should be used.
355 */
356 _getHeaderHeight() {
357 const isExpanded = this._isExpanded();
358 if (isExpanded && this.expandedHeight) {
359 return this.expandedHeight;
360 }
361 else if (!isExpanded && this.collapsedHeight) {
362 return this.collapsedHeight;
363 }
364 return null;
365 }
366 /** Handle keydown event calling to toggle() if appropriate. */
367 _keydown(event) {
368 switch (event.keyCode) {
369 // Toggle for space and enter keys.
370 case SPACE:
371 case ENTER:
372 if (!hasModifierKey(event)) {
373 event.preventDefault();
374 this._toggle();
375 }
376 break;
377 default:
378 if (this.panel.accordion) {
379 this.panel.accordion._handleHeaderKeydown(event);
380 }
381 return;
382 }
383 }
384 /**
385 * Focuses the panel header. Implemented as a part of `FocusableOption`.
386 * @param origin Origin of the action that triggered the focus.
387 * @docs-private
388 */
389 focus(origin, options) {
390 if (origin) {
391 this._focusMonitor.focusVia(this._element, origin, options);
392 }
393 else {
394 this._element.nativeElement.focus(options);
395 }
396 }
397 ngAfterViewInit() {
398 this._focusMonitor.monitor(this._element).subscribe(origin => {
399 if (origin && this.panel.accordion) {
400 this.panel.accordion._handleHeaderFocus(this);
401 }
402 });
403 }
404 ngOnDestroy() {
405 this._parentChangeSubscription.unsubscribe();
406 this._focusMonitor.stopMonitoring(this._element);
407 }
408}
409MatExpansionPanelHeader.decorators = [
410 { type: Component, args: [{
411 selector: 'mat-expansion-panel-header',
412 template: "<span class=\"mat-content\">\n <ng-content select=\"mat-panel-title\"></ng-content>\n <ng-content select=\"mat-panel-description\"></ng-content>\n <ng-content></ng-content>\n</span>\n<span [@indicatorRotate]=\"_getExpandedState()\" *ngIf=\"_showToggle()\"\n class=\"mat-expansion-indicator\"></span>\n",
413 encapsulation: ViewEncapsulation.None,
414 changeDetection: ChangeDetectionStrategy.OnPush,
415 inputs: ['tabIndex'],
416 animations: [
417 matExpansionAnimations.indicatorRotate,
418 ],
419 host: {
420 'class': 'mat-expansion-panel-header mat-focus-indicator',
421 'role': 'button',
422 '[attr.id]': 'panel._headerId',
423 '[attr.tabindex]': 'tabIndex',
424 '[attr.aria-controls]': '_getPanelId()',
425 '[attr.aria-expanded]': '_isExpanded()',
426 '[attr.aria-disabled]': 'panel.disabled',
427 '[class.mat-expanded]': '_isExpanded()',
428 '[class.mat-expansion-toggle-indicator-after]': `_getTogglePosition() === 'after'`,
429 '[class.mat-expansion-toggle-indicator-before]': `_getTogglePosition() === 'before'`,
430 '[class._mat-animation-noopable]': '_animationMode === "NoopAnimations"',
431 '[style.height]': '_getHeaderHeight()',
432 '(click)': '_toggle()',
433 '(keydown)': '_keydown($event)',
434 },
435 styles: [".mat-expansion-panel-header{display:flex;flex-direction:row;align-items:center;padding:0 24px;border-radius:inherit;transition:height 225ms cubic-bezier(0.4, 0, 0.2, 1)}.mat-expansion-panel-header._mat-animation-noopable{transition:none}.mat-expansion-panel-header:focus,.mat-expansion-panel-header:hover{outline:none}.mat-expansion-panel-header.mat-expanded:focus,.mat-expansion-panel-header.mat-expanded:hover{background:inherit}.mat-expansion-panel-header:not([aria-disabled=true]){cursor:pointer}.mat-expansion-panel-header.mat-expansion-toggle-indicator-before{flex-direction:row-reverse}.mat-expansion-panel-header.mat-expansion-toggle-indicator-before .mat-expansion-indicator{margin:0 16px 0 0}[dir=rtl] .mat-expansion-panel-header.mat-expansion-toggle-indicator-before .mat-expansion-indicator{margin:0 0 0 16px}.mat-content{display:flex;flex:1;flex-direction:row;overflow:hidden}.mat-expansion-panel-header-title,.mat-expansion-panel-header-description{display:flex;flex-grow:1;margin-right:16px}[dir=rtl] .mat-expansion-panel-header-title,[dir=rtl] .mat-expansion-panel-header-description{margin-right:0;margin-left:16px}.mat-expansion-panel-header-description{flex-grow:2}.mat-expansion-indicator::after{border-style:solid;border-width:0 2px 2px 0;content:\"\";display:inline-block;padding:3px;transform:rotate(45deg);vertical-align:middle}.cdk-high-contrast-active .mat-expansion-panel .mat-expansion-panel-header.cdk-keyboard-focused:not([aria-disabled=true])::before,.cdk-high-contrast-active .mat-expansion-panel .mat-expansion-panel-header.cdk-program-focused:not([aria-disabled=true])::before,.cdk-high-contrast-active .mat-expansion-panel:not(.mat-expanded) .mat-expansion-panel-header:hover:not([aria-disabled=true])::before{top:0;left:0;right:0;bottom:0;position:absolute;box-sizing:border-box;pointer-events:none;border:3px solid;border-radius:4px;content:\"\"}.cdk-high-contrast-active .mat-expansion-panel-content{border-top:1px solid;border-top-left-radius:0;border-top-right-radius:0}\n"]
436 },] }
437];
438MatExpansionPanelHeader.ctorParameters = () => [
439 { type: MatExpansionPanel, decorators: [{ type: Host }] },
440 { type: ElementRef },
441 { type: FocusMonitor },
442 { type: ChangeDetectorRef },
443 { type: undefined, decorators: [{ type: Inject, args: [MAT_EXPANSION_PANEL_DEFAULT_OPTIONS,] }, { type: Optional }] },
444 { type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] },
445 { type: String, decorators: [{ type: Attribute, args: ['tabindex',] }] }
446];
447MatExpansionPanelHeader.propDecorators = {
448 expandedHeight: [{ type: Input }],
449 collapsedHeight: [{ type: Input }]
450};
451/**
452 * Description element of a `<mat-expansion-panel-header>`.
453 */
454class MatExpansionPanelDescription {
455}
456MatExpansionPanelDescription.decorators = [
457 { type: Directive, args: [{
458 selector: 'mat-panel-description',
459 host: {
460 class: 'mat-expansion-panel-header-description'
461 }
462 },] }
463];
464/**
465 * Title element of a `<mat-expansion-panel-header>`.
466 */
467class MatExpansionPanelTitle {
468}
469MatExpansionPanelTitle.decorators = [
470 { type: Directive, args: [{
471 selector: 'mat-panel-title',
472 host: {
473 class: 'mat-expansion-panel-header-title'
474 }
475 },] }
476];
477
478/**
479 * @license
480 * Copyright Google LLC All Rights Reserved.
481 *
482 * Use of this source code is governed by an MIT-style license that can be
483 * found in the LICENSE file at https://angular.io/license
484 */
485/**
486 * Directive for a Material Design Accordion.
487 */
488class MatAccordion extends CdkAccordion {
489 constructor() {
490 super(...arguments);
491 /** Headers belonging to this accordion. */
492 this._ownHeaders = new QueryList();
493 this._hideToggle = false;
494 /**
495 * Display mode used for all expansion panels in the accordion. Currently two display
496 * modes exist:
497 * default - a gutter-like spacing is placed around any expanded panel, placing the expanded
498 * panel at a different elevation from the rest of the accordion.
499 * flat - no spacing is placed around expanded panels, showing all panels at the same
500 * elevation.
501 */
502 this.displayMode = 'default';
503 /** The position of the expansion indicator. */
504 this.togglePosition = 'after';
505 }
506 /** Whether the expansion indicator should be hidden. */
507 get hideToggle() { return this._hideToggle; }
508 set hideToggle(show) { this._hideToggle = coerceBooleanProperty(show); }
509 ngAfterContentInit() {
510 this._headers.changes
511 .pipe(startWith(this._headers))
512 .subscribe((headers) => {
513 this._ownHeaders.reset(headers.filter(header => header.panel.accordion === this));
514 this._ownHeaders.notifyOnChanges();
515 });
516 this._keyManager = new FocusKeyManager(this._ownHeaders).withWrap().withHomeAndEnd();
517 }
518 /** Handles keyboard events coming in from the panel headers. */
519 _handleHeaderKeydown(event) {
520 this._keyManager.onKeydown(event);
521 }
522 _handleHeaderFocus(header) {
523 this._keyManager.updateActiveItem(header);
524 }
525 ngOnDestroy() {
526 super.ngOnDestroy();
527 this._ownHeaders.destroy();
528 }
529}
530MatAccordion.decorators = [
531 { type: Directive, args: [{
532 selector: 'mat-accordion',
533 exportAs: 'matAccordion',
534 inputs: ['multi'],
535 providers: [{
536 provide: MAT_ACCORDION,
537 useExisting: MatAccordion
538 }],
539 host: {
540 class: 'mat-accordion',
541 // Class binding which is only used by the test harness as there is no other
542 // way for the harness to detect if multiple panel support is enabled.
543 '[class.mat-accordion-multi]': 'this.multi',
544 }
545 },] }
546];
547MatAccordion.propDecorators = {
548 _headers: [{ type: ContentChildren, args: [MatExpansionPanelHeader, { descendants: true },] }],
549 hideToggle: [{ type: Input }],
550 displayMode: [{ type: Input }],
551 togglePosition: [{ type: Input }]
552};
553
554/**
555 * @license
556 * Copyright Google LLC All Rights Reserved.
557 *
558 * Use of this source code is governed by an MIT-style license that can be
559 * found in the LICENSE file at https://angular.io/license
560 */
561class MatExpansionModule {
562}
563MatExpansionModule.decorators = [
564 { type: NgModule, args: [{
565 imports: [CommonModule, MatCommonModule, CdkAccordionModule, PortalModule],
566 exports: [
567 MatAccordion,
568 MatExpansionPanel,
569 MatExpansionPanelActionRow,
570 MatExpansionPanelHeader,
571 MatExpansionPanelTitle,
572 MatExpansionPanelDescription,
573 MatExpansionPanelContent,
574 ],
575 declarations: [
576 MatAccordion,
577 MatExpansionPanel,
578 MatExpansionPanelActionRow,
579 MatExpansionPanelHeader,
580 MatExpansionPanelTitle,
581 MatExpansionPanelDescription,
582 MatExpansionPanelContent,
583 ],
584 },] }
585];
586
587/**
588 * @license
589 * Copyright Google LLC All Rights Reserved.
590 *
591 * Use of this source code is governed by an MIT-style license that can be
592 * found in the LICENSE file at https://angular.io/license
593 */
594
595/**
596 * Generated bundle index. Do not edit.
597 */
598
599export { EXPANSION_PANEL_ANIMATION_TIMING, MAT_ACCORDION, MAT_EXPANSION_PANEL_DEFAULT_OPTIONS, MatAccordion, MatExpansionModule, MatExpansionPanel, MatExpansionPanelActionRow, MatExpansionPanelContent, MatExpansionPanelDescription, MatExpansionPanelHeader, MatExpansionPanelTitle, matExpansionAnimations, ɵ0 };
600//# sourceMappingURL=expansion.js.map
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