@ionic/angular
Version:
Angular specific wrappers for @ionic/core
269 lines • 37.3 kB
JavaScript
import { bindLifecycleEvents } from '../../providers/angular-delegate';
import { computeStackId, destroyView, getUrl, insertView, isTabSwitch, toSegments, } from './stack-utils';
// TODO(FW-2827): types
export class StackController {
constructor(tabsPrefix, containerEl, router, navCtrl, zone, location) {
this.containerEl = containerEl;
this.router = router;
this.navCtrl = navCtrl;
this.zone = zone;
this.location = location;
this.views = [];
this.skipTransition = false;
this.nextId = 0;
this.tabsPrefix = tabsPrefix !== undefined ? toSegments(tabsPrefix) : undefined;
}
createView(ref, activatedRoute) {
const url = getUrl(this.router, activatedRoute);
const element = ref?.location?.nativeElement;
const unlistenEvents = bindLifecycleEvents(this.zone, ref.instance, element);
return {
id: this.nextId++,
stackId: computeStackId(this.tabsPrefix, url),
unlistenEvents,
element,
ref,
url,
};
}
getExistingView(activatedRoute) {
const activatedUrlKey = getUrl(this.router, activatedRoute);
const view = this.views.find((vw) => vw.url === activatedUrlKey);
if (view) {
view.ref.changeDetectorRef.reattach();
}
return view;
}
setActive(enteringView) {
const consumeResult = this.navCtrl.consumeTransition();
let { direction, animation, animationBuilder } = consumeResult;
const leavingView = this.activeView;
const tabSwitch = isTabSwitch(enteringView, leavingView);
if (tabSwitch) {
direction = 'back';
animation = undefined;
}
const viewsSnapshot = this.views.slice();
let currentNavigation;
const router = this.router;
// Angular >= 7.2.0
if (router.getCurrentNavigation) {
currentNavigation = router.getCurrentNavigation();
// Angular < 7.2.0
}
else if (router.navigations?.value) {
currentNavigation = router.navigations.value;
}
/**
* If the navigation action
* sets `replaceUrl: true`
* then we need to make sure
* we remove the last item
* from our views stack
*/
if (currentNavigation?.extras?.replaceUrl) {
if (this.views.length > 0) {
this.views.splice(-1, 1);
}
}
const reused = this.views.includes(enteringView);
const views = this.insertView(enteringView, direction);
// Trigger change detection before transition starts
// This will call ngOnInit() the first time too, just after the view
// was attached to the dom, but BEFORE the transition starts
if (!reused) {
enteringView.ref.changeDetectorRef.detectChanges();
}
/**
* If we are going back from a page that
* was presented using a custom animation
* we should default to using that
* unless the developer explicitly
* provided another animation.
*/
const customAnimation = enteringView.animationBuilder;
if (animationBuilder === undefined && direction === 'back' && !tabSwitch && customAnimation !== undefined) {
animationBuilder = customAnimation;
}
/**
* Save any custom animation so that navigating
* back will use this custom animation by default.
*/
if (leavingView) {
leavingView.animationBuilder = animationBuilder;
}
// Wait until previous transitions finish
return this.zone.runOutsideAngular(() => {
return this.wait(() => {
// disconnect leaving page from change detection to
// reduce jank during the page transition
if (leavingView) {
leavingView.ref.changeDetectorRef.detach();
}
// In case the enteringView is the same as the leavingPage we need to reattach()
enteringView.ref.changeDetectorRef.reattach();
return this.transition(enteringView, leavingView, animation, this.canGoBack(1), false, animationBuilder)
.then(() => cleanupAsync(enteringView, views, viewsSnapshot, this.location, this.zone))
.then(() => ({
enteringView,
direction,
animation,
tabSwitch,
}));
});
});
}
canGoBack(deep, stackId = this.getActiveStackId()) {
return this.getStack(stackId).length > deep;
}
pop(deep, stackId = this.getActiveStackId()) {
return this.zone.run(() => {
const views = this.getStack(stackId);
if (views.length <= deep) {
return Promise.resolve(false);
}
const view = views[views.length - deep - 1];
let url = view.url;
const viewSavedData = view.savedData;
if (viewSavedData) {
const primaryOutlet = viewSavedData.get('primary');
if (primaryOutlet?.route?._routerState?.snapshot.url) {
url = primaryOutlet.route._routerState.snapshot.url;
}
}
const { animationBuilder } = this.navCtrl.consumeTransition();
return this.navCtrl.navigateBack(url, { ...view.savedExtras, animation: animationBuilder }).then(() => true);
});
}
startBackTransition() {
const leavingView = this.activeView;
if (leavingView) {
const views = this.getStack(leavingView.stackId);
const enteringView = views[views.length - 2];
const customAnimation = enteringView.animationBuilder;
return this.wait(() => {
return this.transition(enteringView, // entering view
leavingView, // leaving view
'back', this.canGoBack(2), true, customAnimation);
});
}
return Promise.resolve();
}
endBackTransition(shouldComplete) {
if (shouldComplete) {
this.skipTransition = true;
this.pop(1);
}
else if (this.activeView) {
cleanup(this.activeView, this.views, this.views, this.location, this.zone);
}
}
getLastUrl(stackId) {
const views = this.getStack(stackId);
return views.length > 0 ? views[views.length - 1] : undefined;
}
/**
* @internal
*/
getRootUrl(stackId) {
const views = this.getStack(stackId);
return views.length > 0 ? views[0] : undefined;
}
getActiveStackId() {
return this.activeView ? this.activeView.stackId : undefined;
}
hasRunningTask() {
return this.runningTask !== undefined;
}
destroy() {
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
this.containerEl = undefined;
this.views.forEach(destroyView);
this.activeView = undefined;
this.views = [];
}
getStack(stackId) {
return this.views.filter((v) => v.stackId === stackId);
}
insertView(enteringView, direction) {
this.activeView = enteringView;
this.views = insertView(this.views, enteringView, direction);
return this.views.slice();
}
transition(enteringView, leavingView, direction, showGoBack, progressAnimation, animationBuilder) {
if (this.skipTransition) {
this.skipTransition = false;
return Promise.resolve(false);
}
if (leavingView === enteringView) {
return Promise.resolve(false);
}
const enteringEl = enteringView ? enteringView.element : undefined;
const leavingEl = leavingView ? leavingView.element : undefined;
const containerEl = this.containerEl;
if (enteringEl && enteringEl !== leavingEl) {
enteringEl.classList.add('ion-page');
enteringEl.classList.add('ion-page-invisible');
if (enteringEl.parentElement !== containerEl) {
containerEl.appendChild(enteringEl);
}
if (containerEl.commit) {
return containerEl.commit(enteringEl, leavingEl, {
duration: direction === undefined ? 0 : undefined,
direction,
showGoBack,
progressAnimation,
animationBuilder,
});
}
}
return Promise.resolve(false);
}
async wait(task) {
if (this.runningTask !== undefined) {
await this.runningTask;
this.runningTask = undefined;
}
const promise = (this.runningTask = task());
promise.finally(() => (this.runningTask = undefined));
return promise;
}
}
const cleanupAsync = (activeRoute, views, viewsSnapshot, location, zone) => {
if (typeof requestAnimationFrame === 'function') {
return new Promise((resolve) => {
requestAnimationFrame(() => {
cleanup(activeRoute, views, viewsSnapshot, location, zone);
resolve();
});
});
}
return Promise.resolve();
};
const cleanup = (activeRoute, views, viewsSnapshot, location, zone) => {
/**
* Re-enter the Angular zone when destroying page components. This will allow
* lifecycle events (`ngOnDestroy`) to be run inside the Angular zone.
*/
zone.run(() => viewsSnapshot.filter((view) => !views.includes(view)).forEach(destroyView));
views.forEach((view) => {
/**
* In the event that a user navigated multiple
* times in rapid succession, we want to make sure
* we don't pre-emptively detach a view while
* it is in mid-transition.
*
* In this instance we also do not care about query
* params or fragments as it will be the same view regardless
*/
const locationWithoutParams = location.path().split('?')[0];
const locationWithoutFragment = locationWithoutParams.split('#')[0];
if (view !== activeRoute && view.url !== locationWithoutFragment) {
const element = view.element;
element.setAttribute('aria-hidden', 'true');
element.classList.add('ion-page-hidden');
view.ref.changeDetectorRef.detach();
}
});
};
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{ Location } from '@angular/common';\nimport { ComponentRef, NgZone } from '@angular/core';\nimport { ActivatedRoute, Router } from '@angular/router';\nimport { AnimationBuilder, RouterDirection } from '@ionic/core';\n\nimport { bindLifecycleEvents } from '../../providers/angular-delegate';\nimport { NavController } from '../../providers/nav-controller';\n\nimport {\n  RouteView,\n  StackEvent,\n  computeStackId,\n  destroyView,\n  getUrl,\n  insertView,\n  isTabSwitch,\n  toSegments,\n} from './stack-utils';\n\n// TODO(FW-2827): types\n\nexport class StackController {\n  private views: RouteView[] = [];\n  private runningTask?: Promise<any>;\n  private skipTransition = false;\n  private tabsPrefix: string[] | undefined;\n  private activeView: RouteView | undefined;\n  private nextId = 0;\n\n  constructor(\n    tabsPrefix: string | undefined,\n    private containerEl: HTMLIonRouterOutletElement,\n    private router: Router,\n    private navCtrl: NavController,\n    private zone: NgZone,\n    private location: Location\n  ) {\n    this.tabsPrefix = tabsPrefix !== undefined ? toSegments(tabsPrefix) : undefined;\n  }\n\n  createView(ref: ComponentRef<any>, activatedRoute: ActivatedRoute): RouteView {\n    const url = getUrl(this.router, activatedRoute);\n    const element = ref?.location?.nativeElement as HTMLElement;\n    const unlistenEvents = bindLifecycleEvents(this.zone, ref.instance, element);\n    return {\n      id: this.nextId++,\n      stackId: computeStackId(this.tabsPrefix, url),\n      unlistenEvents,\n      element,\n      ref,\n      url,\n    };\n  }\n\n  getExistingView(activatedRoute: ActivatedRoute): RouteView | undefined {\n    const activatedUrlKey = getUrl(this.router, activatedRoute);\n    const view = this.views.find((vw) => vw.url === activatedUrlKey);\n    if (view) {\n      view.ref.changeDetectorRef.reattach();\n    }\n    return view;\n  }\n\n  setActive(enteringView: RouteView): Promise<StackEvent> {\n    const consumeResult = this.navCtrl.consumeTransition();\n    let { direction, animation, animationBuilder } = consumeResult;\n    const leavingView = this.activeView;\n    const tabSwitch = isTabSwitch(enteringView, leavingView);\n    if (tabSwitch) {\n      direction = 'back';\n      animation = undefined;\n    }\n\n    const viewsSnapshot = this.views.slice();\n\n    let currentNavigation;\n\n    const router = this.router as any;\n\n    // Angular >= 7.2.0\n    if (router.getCurrentNavigation) {\n      currentNavigation = router.getCurrentNavigation();\n\n      // Angular < 7.2.0\n    } else if (router.navigations?.value) {\n      currentNavigation = router.navigations.value;\n    }\n\n    /**\n     * If the navigation action\n     * sets `replaceUrl: true`\n     * then we need to make sure\n     * we remove the last item\n     * from our views stack\n     */\n    if (currentNavigation?.extras?.replaceUrl) {\n      if (this.views.length > 0) {\n        this.views.splice(-1, 1);\n      }\n    }\n\n    const reused = this.views.includes(enteringView);\n    const views = this.insertView(enteringView, direction);\n\n    // Trigger change detection before transition starts\n    // This will call ngOnInit() the first time too, just after the view\n    // was attached to the dom, but BEFORE the transition starts\n    if (!reused) {\n      enteringView.ref.changeDetectorRef.detectChanges();\n    }\n\n    /**\n     * If we are going back from a page that\n     * was presented using a custom animation\n     * we should default to using that\n     * unless the developer explicitly\n     * provided another animation.\n     */\n    const customAnimation = enteringView.animationBuilder;\n    if (animationBuilder === undefined && direction === 'back' && !tabSwitch && customAnimation !== undefined) {\n      animationBuilder = customAnimation;\n    }\n\n    /**\n     * Save any custom animation so that navigating\n     * back will use this custom animation by default.\n     */\n    if (leavingView) {\n      leavingView.animationBuilder = animationBuilder;\n    }\n\n    // Wait until previous transitions finish\n    return this.zone.runOutsideAngular(() => {\n      return this.wait(() => {\n        // disconnect leaving page from change detection to\n        // reduce jank during the page transition\n        if (leavingView) {\n          leavingView.ref.changeDetectorRef.detach();\n        }\n        // In case the enteringView is the same as the leavingPage we need to reattach()\n        enteringView.ref.changeDetectorRef.reattach();\n\n        return this.transition(enteringView, leavingView, animation, this.canGoBack(1), false, animationBuilder)\n          .then(() => cleanupAsync(enteringView, views, viewsSnapshot, this.location, this.zone))\n          .then(() => ({\n            enteringView,\n            direction,\n            animation,\n            tabSwitch,\n          }));\n      });\n    });\n  }\n\n  canGoBack(deep: number, stackId = this.getActiveStackId()): boolean {\n    return this.getStack(stackId).length > deep;\n  }\n\n  pop(deep: number, stackId = this.getActiveStackId()): Promise<boolean> {\n    return this.zone.run(() => {\n      const views = this.getStack(stackId);\n      if (views.length <= deep) {\n        return Promise.resolve(false);\n      }\n      const view = views[views.length - deep - 1];\n      let url = view.url;\n\n      const viewSavedData = view.savedData;\n      if (viewSavedData) {\n        const primaryOutlet = viewSavedData.get('primary');\n        if (primaryOutlet?.route?._routerState?.snapshot.url) {\n          url = primaryOutlet.route._routerState.snapshot.url;\n        }\n      }\n      const { animationBuilder } = this.navCtrl.consumeTransition();\n      return this.navCtrl.navigateBack(url, { ...view.savedExtras, animation: animationBuilder }).then(() => true);\n    });\n  }\n\n  startBackTransition(): Promise<boolean> | Promise<void> {\n    const leavingView = this.activeView;\n    if (leavingView) {\n      const views = this.getStack(leavingView.stackId);\n      const enteringView = views[views.length - 2];\n      const customAnimation = enteringView.animationBuilder;\n\n      return this.wait(() => {\n        return this.transition(\n          enteringView, // entering view\n          leavingView, // leaving view\n          'back',\n          this.canGoBack(2),\n          true,\n          customAnimation\n        );\n      });\n    }\n    return Promise.resolve();\n  }\n\n  endBackTransition(shouldComplete: boolean): void {\n    if (shouldComplete) {\n      this.skipTransition = true;\n      this.pop(1);\n    } else if (this.activeView) {\n      cleanup(this.activeView, this.views, this.views, this.location, this.zone);\n    }\n  }\n\n  getLastUrl(stackId?: string): RouteView | undefined {\n    const views = this.getStack(stackId);\n    return views.length > 0 ? views[views.length - 1] : undefined;\n  }\n\n  /**\n   * @internal\n   */\n  getRootUrl(stackId?: string): RouteView | undefined {\n    const views = this.getStack(stackId);\n    return views.length > 0 ? views[0] : undefined;\n  }\n\n  getActiveStackId(): string | undefined {\n    return this.activeView ? this.activeView.stackId : undefined;\n  }\n\n  hasRunningTask(): boolean {\n    return this.runningTask !== undefined;\n  }\n\n  destroy(): void {\n    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n    this.containerEl = undefined!;\n    this.views.forEach(destroyView);\n    this.activeView = undefined;\n    this.views = [];\n  }\n\n  private getStack(stackId: string | undefined) {\n    return this.views.filter((v) => v.stackId === stackId);\n  }\n\n  private insertView(enteringView: RouteView, direction: RouterDirection) {\n    this.activeView = enteringView;\n    this.views = insertView(this.views, enteringView, direction);\n    return this.views.slice();\n  }\n\n  private transition(\n    enteringView: RouteView | undefined,\n    leavingView: RouteView | undefined,\n    direction: 'forward' | 'back' | undefined,\n    showGoBack: boolean,\n    progressAnimation: boolean,\n    animationBuilder?: AnimationBuilder\n  ) {\n    if (this.skipTransition) {\n      this.skipTransition = false;\n      return Promise.resolve(false);\n    }\n    if (leavingView === enteringView) {\n      return Promise.resolve(false);\n    }\n    const enteringEl = enteringView ? enteringView.element : undefined;\n    const leavingEl = leavingView ? leavingView.element : undefined;\n    const containerEl = this.containerEl;\n    if (enteringEl && enteringEl !== leavingEl) {\n      enteringEl.classList.add('ion-page');\n      enteringEl.classList.add('ion-page-invisible');\n      if (enteringEl.parentElement !== containerEl) {\n        containerEl.appendChild(enteringEl);\n      }\n\n      if ((containerEl as any).commit) {\n        return containerEl.commit(enteringEl, leavingEl, {\n          duration: direction === undefined ? 0 : undefined,\n          direction,\n          showGoBack,\n          progressAnimation,\n          animationBuilder,\n        });\n      }\n    }\n    return Promise.resolve(false);\n  }\n\n  private async wait<T>(task: () => Promise<T>): Promise<T> {\n    if (this.runningTask !== undefined) {\n      await this.runningTask;\n      this.runningTask = undefined;\n    }\n    const promise = (this.runningTask = task());\n    promise.finally(() => (this.runningTask = undefined));\n    return promise;\n  }\n}\n\nconst cleanupAsync = (\n  activeRoute: RouteView,\n  views: RouteView[],\n  viewsSnapshot: RouteView[],\n  location: Location,\n  zone: NgZone\n) => {\n  if (typeof (requestAnimationFrame as any) === 'function') {\n    return new Promise<void>((resolve) => {\n      requestAnimationFrame(() => {\n        cleanup(activeRoute, views, viewsSnapshot, location, zone);\n        resolve();\n      });\n    });\n  }\n  return Promise.resolve();\n};\n\nconst cleanup = (\n  activeRoute: RouteView,\n  views: RouteView[],\n  viewsSnapshot: RouteView[],\n  location: Location,\n  zone: NgZone\n) => {\n  /**\n   * Re-enter the Angular zone when destroying page components. This will allow\n   * lifecycle events (`ngOnDestroy`) to be run inside the Angular zone.\n   */\n  zone.run(() => viewsSnapshot.filter((view) => !views.includes(view)).forEach(destroyView));\n\n  views.forEach((view) => {\n    /**\n     * In the event that a user navigated multiple\n     * times in rapid succession, we want to make sure\n     * we don't pre-emptively detach a view while\n     * it is in mid-transition.\n     *\n     * In this instance we also do not care about query\n     * params or fragments as it will be the same view regardless\n     */\n    const locationWithoutParams = location.path().split('?')[0];\n    const locationWithoutFragment = locationWithoutParams.split('#')[0];\n\n    if (view !== activeRoute && view.url !== locationWithoutFragment) {\n      const element = view.element;\n      element.setAttribute('aria-hidden', 'true');\n      element.classList.add('ion-page-hidden');\n      view.ref.changeDetectorRef.detach();\n    }\n  });\n};\n"]}