Shared-Travel-Map-Front-End/node_modules/ionic-angular/es2015/navigation/nav-controller-base.js

import { EventEmitter, Input, ReflectiveInjector } from '@angular/core';
import { DIRECTION_BACK, DIRECTION_FORWARD, INIT_ZINDEX, STATE_ATTACHED, STATE_DESTROYED, STATE_INITIALIZED, STATE_NEW, convertToViews, } from './nav-util';
import { setZIndex } from './nav-util';
import { isBlank, isNumber, isPresent, isTrueProperty } from '../util/util';
import { ViewController, isViewController } from './view-controller';
import { Ion } from '../components/ion';
import { NavController } from './nav-controller';
import { NavParams } from './nav-params';
import { SwipeBackGesture } from './swipe-back';
/**
 * @hidden
 * This class is for internal use only. It is not exported publicly.
 */
export class NavControllerBase extends Ion {
    constructor(parent, _app, config, plt, elementRef, _zone, renderer, _cfr, _gestureCtrl, _trnsCtrl, _linker, _domCtrl, _errHandler) {
        super(config, elementRef, renderer);
        this.parent = parent;
        this._app = _app;
        this.config = config;
        this.plt = plt;
        this._zone = _zone;
        this._cfr = _cfr;
        this._gestureCtrl = _gestureCtrl;
        this._trnsCtrl = _trnsCtrl;
        this._linker = _linker;
        this._domCtrl = _domCtrl;
        this._errHandler = _errHandler;
        this._ids = -1;
        this._init = false;
        this._queue = [];
        this._trnsId = null;
        this._trnsTm = false;
        this._views = [];
        this._zIndexOffset = 0;
        this.viewDidLoad = new EventEmitter();
        this.viewWillEnter = new EventEmitter();
        this.viewDidEnter = new EventEmitter();
        this.viewWillLeave = new EventEmitter();
        this.viewDidLeave = new EventEmitter();
        this.viewWillUnload = new EventEmitter();
        this._sbEnabled = config.getBoolean('swipeBackEnabled');
        this._children = [];
        this.id = 'n' + (++ctrlIds);
        this._destroyed = false;
    }
    get swipeBackEnabled() {
        return this._sbEnabled;
    }
    set swipeBackEnabled(val) {
        this._sbEnabled = isTrueProperty(val);
        this._swipeBackCheck();
    }
    push(page, params, opts, done) {
        return this._queueTrns({
            insertStart: -1,
            insertViews: [{ page: page, params: params }],
            opts: opts,
        }, done);
    }
    insert(insertIndex, page, params, opts, done) {
        return this._queueTrns({
            insertStart: insertIndex,
            insertViews: [{ page: page, params: params }],
            opts: opts,
        }, done);
    }
    insertPages(insertIndex, insertPages, opts, done) {
        return this._queueTrns({
            insertStart: insertIndex,
            insertViews: insertPages,
            opts: opts,
        }, done);
    }
    pop(opts, done) {
        return this._queueTrns({
            removeStart: -1,
            removeCount: 1,
            opts: opts,
        }, done);
    }
    popTo(indexOrViewCtrl, opts, done) {
        let config = {
            removeStart: -1,
            removeCount: -1,
            opts: opts
        };
        if (isViewController(indexOrViewCtrl)) {
            config.removeView = indexOrViewCtrl;
            config.removeStart = 1;
        }
        else if (isNumber(indexOrViewCtrl)) {
            config.removeStart = indexOrViewCtrl + 1;
        }
        return this._queueTrns(config, done);
    }
    popToRoot(opts, done) {
        return this._queueTrns({
            removeStart: 1,
            removeCount: -1,
            opts: opts,
        }, done);
    }
    popAll() {
        let promises = [];
        for (var i = this._views.length - 1; i >= 0; i--) {
            promises.push(this.pop(null));
        }
        return Promise.all(promises);
    }
    remove(startIndex, removeCount = 1, opts, done) {
        return this._queueTrns({
            removeStart: startIndex,
            removeCount: removeCount,
            opts: opts,
        }, done);
    }
    removeView(viewController, opts, done) {
        return this._queueTrns({
            removeView: viewController,
            removeStart: 0,
            removeCount: 1,
            opts: opts,
        }, done);
    }
    setRoot(pageOrViewCtrl, params, opts, done) {
        return this.setPages([{ page: pageOrViewCtrl, params: params }], opts, done);
    }
    setPages(viewControllers, opts, done) {
        if (isBlank(opts)) {
            opts = {};
        }
        // if animation wasn't set to true then default it to NOT animate
        if (opts.animate !== true) {
            opts.animate = false;
        }
        return this._queueTrns({
            insertStart: 0,
            insertViews: viewControllers,
            removeStart: 0,
            removeCount: -1,
            opts: opts
        }, done);
    }
    // _queueTrns() adds a navigation stack change to the queue and schedules it to run:
    // 1. _nextTrns(): consumes the next transition in the queue
    // 2. _viewInit(): initializes enteringView if required
    // 3. _viewTest(): ensures canLeave/canEnter returns true, so the operation can continue
    // 4. _postViewInit(): add/remove the views from the navigation stack
    // 5. _transitionInit(): initializes the visual transition if required and schedules it to run
    // 6. _viewAttachToDOM(): attaches the enteringView to the DOM
    // 7. _transitionStart(): called once the transition actually starts, it initializes the Animation underneath.
    // 8. _transitionFinish(): called once the transition finishes
    // 9. _cleanup(): syncs the navigation internal state with the DOM. For example it removes the pages from the DOM or hides/show them.
    _queueTrns(ti, done) {
        const promise = new Promise((resolve, reject) => {
            ti.resolve = resolve;
            ti.reject = reject;
        });
        ti.done = done;
        // Normalize empty
        if (ti.insertViews && ti.insertViews.length === 0) {
            ti.insertViews = undefined;
        }
        // Enqueue transition instruction
        this._queue.push(ti);
        // if there isn't a transition already happening
        // then this will kick off this transition
        this._nextTrns();
        return promise;
    }
    _success(result, ti) {
        if (this._queue === null) {
            this._fireError('nav controller was destroyed', ti);
            return;
        }
        this._init = true;
        this._trnsId = null;
        // ensure we're not transitioning here
        this.setTransitioning(false);
        this._swipeBackCheck();
        // let's see if there's another to kick off
        this._nextTrns();
        if (ti.done) {
            ti.done(result.hasCompleted, result.requiresTransition, result.enteringName, result.leavingName, result.direction);
        }
        ti.resolve(result.hasCompleted);
    }
    _failed(rejectReason, ti) {
        if (this._queue === null) {
            this._fireError('nav controller was destroyed', ti);
            return;
        }
        this._trnsId = null;
        this._queue.length = 0;
        // let's see if there's another to kick off
        this.setTransitioning(false);
        this._swipeBackCheck();
        this._nextTrns();
        this._fireError(rejectReason, ti);
    }
    _fireError(rejectReason, ti) {
        if (ti.done) {
            ti.done(false, false, rejectReason);
        }
        if (ti.reject && !this._destroyed) {
            ti.reject(rejectReason);
        }
        else {
            ti.resolve(false);
        }
    }
    _nextTrns() {
        // this is the framework's bread 'n butta function
        // only one transition is allowed at any given time
        if (this.isTransitioning()) {
            return false;
        }
        // there is no transition happening right now
        // get the next instruction
        const ti = this._queue.shift();
        if (!ti) {
            return false;
        }
        // set that this nav is actively transitioning
        let enteringView;
        let leavingView;
        this._startTI(ti)
            .then(() => this._loadLazyLoading(ti))
            .then(() => {
            leavingView = this.getActive();
            enteringView = this._getEnteringView(ti, leavingView);
            if (!leavingView && !enteringView) {
                throw 'no views in the stack to be removed';
            }
            if (enteringView && enteringView._state === STATE_NEW) {
                this._viewInit(enteringView);
            }
            // Needs transition?
            ti.requiresTransition = (ti.enteringRequiresTransition || ti.leavingRequiresTransition) && enteringView !== leavingView;
        })
            .then(() => this._viewTest(enteringView, leavingView, ti))
            .then(() => this._postViewInit(enteringView, leavingView, ti))
            .then(() => this._transition(enteringView, leavingView, ti))
            .then((result) => this._success(result, ti))
            .catch((rejectReason) => this._failed(rejectReason, ti));
        return true;
    }
    _startTI(ti) {
        const viewsLength = this._views.length;
        if (isPresent(ti.removeView)) {
            (void 0) /* assert */;
            (void 0) /* assert */;
            const index = this.indexOf(ti.removeView);
            if (index < 0) {
                return Promise.reject('removeView was not found');
            }
            ti.removeStart += index;
        }
        if (isPresent(ti.removeStart)) {
            if (ti.removeStart < 0) {
                ti.removeStart = (viewsLength - 1);
            }
            if (ti.removeCount < 0) {
                ti.removeCount = (viewsLength - ti.removeStart);
            }
            ti.leavingRequiresTransition = (ti.removeCount > 0) && ((ti.removeStart + ti.removeCount) === viewsLength);
        }
        if (ti.insertViews) {
            // allow -1 to be passed in to auto push it on the end
            // and clean up the index if it's larger then the size of the stack
            if (ti.insertStart < 0 || ti.insertStart > viewsLength) {
                ti.insertStart = viewsLength;
            }
            ti.enteringRequiresTransition = (ti.insertStart === viewsLength);
        }
        this.setTransitioning(true);
        return Promise.resolve();
    }
    _loadLazyLoading(ti) {
        const insertViews = ti.insertViews;
        if (insertViews) {
            (void 0) /* assert */;
            return convertToViews(this._linker, insertViews).then((viewControllers) => {
                (void 0) /* assert */;
                viewControllers = viewControllers.filter(v => v !== null);
                if (viewControllers.length === 0) {
                    throw 'invalid views to insert';
                }
                // Check all the inserted view are correct
                for (var i = 0; i < viewControllers.length; i++) {
                    var view = viewControllers[i];
                    var nav = view._nav;
                    if (nav && nav !== this) {
                        throw 'inserted view was already inserted';
                    }
                    if (view._state === STATE_DESTROYED) {
                        throw 'inserted view was already destroyed';
                    }
                }
                ti.insertViews = viewControllers;
            });
        }
        return Promise.resolve();
    }
    _getEnteringView(ti, leavingView) {
        const insertViews = ti.insertViews;
        if (insertViews) {
            // grab the very last view of the views to be inserted
            // and initialize it as the new entering view
            return insertViews[insertViews.length - 1];
        }
        const removeStart = ti.removeStart;
        if (isPresent(removeStart)) {
            var views = this._views;
            var removeEnd = removeStart + ti.removeCount;
            var i;
            var view;
            for (i = views.length - 1; i >= 0; i--) {
                view = views[i];
                if ((i < removeStart || i >= removeEnd) && view !== leavingView) {
                    return view;
                }
            }
        }
        return null;
    }
    _postViewInit(enteringView, leavingView, ti) {
        (void 0) /* assert */;
        (void 0) /* assert */;
        (void 0) /* assert */;
        const opts = ti.opts || {};
        const insertViews = ti.insertViews;
        const removeStart = ti.removeStart;
        const removeCount = ti.removeCount;
        let view;
        let i;
        let destroyQueue;
        // there are views to remove
        if (isPresent(removeStart)) {
            (void 0) /* assert */;
            (void 0) /* assert */;
            destroyQueue = [];
            for (i = 0; i < removeCount; i++) {
                view = this._views[i + removeStart];
                if (view && view !== enteringView && view !== leavingView) {
                    destroyQueue.push(view);
                }
            }
            // default the direction to "back"
            opts.direction = opts.direction || DIRECTION_BACK;
        }
        const finalBalance = this._views.length + (insertViews ? insertViews.length : 0) - (removeCount ? removeCount : 0);
        (void 0) /* assert */;
        if (finalBalance === 0 && !this._isPortal) {
            console.warn(`You can't remove all the pages in the navigation stack. nav.pop() is probably called too many times.`, this, this.getNativeElement());
            throw 'navigation stack needs at least one root page';
        }
        // At this point the transition can not be rejected, any throw should be an error
        // there are views to insert
        if (insertViews) {
            // manually set the new view's id if an id was passed in the options
            if (isPresent(opts.id)) {
                enteringView.id = opts.id;
            }
            // add the views to the
            for (i = 0; i < insertViews.length; i++) {
                view = insertViews[i];
                this._insertViewAt(view, ti.insertStart + i);
            }
            if (ti.enteringRequiresTransition) {
                // default to forward if not already set
                opts.direction = opts.direction || DIRECTION_FORWARD;
            }
        }
        // if the views to be removed are in the beginning or middle
        // and there is not a view that needs to visually transition out
        // then just destroy them and don't transition anything
        // batch all of lifecycles together
        // let's make sure, callbacks are zoned
        if (destroyQueue && destroyQueue.length > 0) {
            this._zone.run(() => {
                for (i = 0; i < destroyQueue.length; i++) {
                    view = destroyQueue[i];
                    this._willLeave(view, true);
                    this._didLeave(view);
                    this._willUnload(view);
                }
            });
            // once all lifecycle events has been delivered, we can safely detroy the views
            for (i = 0; i < destroyQueue.length; i++) {
                this._destroyView(destroyQueue[i]);
            }
        }
        // set which animation it should use if it wasn't set yet
        if (ti.requiresTransition && !opts.animation) {
            if (isPresent(ti.removeStart)) {
                opts.animation = (leavingView || enteringView).getTransitionName(opts.direction);
            }
            else {
                opts.animation = (enteringView || leavingView).getTransitionName(opts.direction);
            }
        }
        ti.opts = opts;
    }
    /**
     * DOM WRITE
     */
    _viewInit(enteringView) {
        (void 0) /* assert */;
        (void 0) /* assert */;
        // render the entering view, and all child navs and views
        // entering view has not been initialized yet
        const componentProviders = ReflectiveInjector.resolve([
            { provide: NavController, useValue: this },
            { provide: ViewController, useValue: enteringView },
            { provide: NavParams, useValue: enteringView.getNavParams() }
        ]);
        const componentFactory = this._linker.resolveComponent(enteringView.component);
        const childInjector = ReflectiveInjector.fromResolvedProviders(componentProviders, this._viewport.parentInjector);
        // create ComponentRef and set it to the entering view
        enteringView.init(componentFactory.create(childInjector, []));
        enteringView._state = STATE_INITIALIZED;
        this._preLoad(enteringView);
    }
    _viewAttachToDOM(view, componentRef, viewport) {
        (void 0) /* assert */;
        (void 0) /* assert */;
        // fire willLoad before change detection runs
        this._willLoad(view);
        // render the component ref instance to the DOM
        // ******** DOM WRITE ****************
        viewport.insert(componentRef.hostView, viewport.length);
        view._state = STATE_ATTACHED;
        if (view._cssClass) {
            // the ElementRef of the actual ion-page created
            var pageElement = componentRef.location.nativeElement;
            // ******** DOM WRITE ****************
            this._renderer.setElementClass(pageElement, view._cssClass, true);
        }
        componentRef.changeDetectorRef.detectChanges();
        // successfully finished loading the entering view
        // fire off the "didLoad" lifecycle events
        this._zone.run(this._didLoad.bind(this, view));
    }
    _viewTest(enteringView, leavingView, ti) {
        // Only test canLeave/canEnter if there is transition
        if (!ti.requiresTransition) {
            return Promise.resolve();
        }
        const promises = [];
        if (leavingView) {
            promises.push(leavingView._lifecycleTest('Leave'));
        }
        if (enteringView) {
            promises.push(enteringView._lifecycleTest('Enter'));
        }
        if (promises.length === 0) {
            return Promise.resolve();
        }
        // darn, async promises, gotta wait for them to resolve
        return Promise.all(promises).then((values) => {
            if (values.some(result => result === false)) {
                throw 'canEnter/Leave returned false';
            }
        }).catch((reason) => {
            // Do not
            ti.reject = null;
            throw reason;
        });
    }
    _transition(enteringView, leavingView, ti) {
        if (!ti.requiresTransition) {
            // transition is not required, so we are already done!
            // they're inserting/removing the views somewhere in the middle or
            // beginning, so visually nothing needs to animate/transition
            // resolve immediately because there's no animation that's happening
            return Promise.resolve({
                hasCompleted: true,
                requiresTransition: false
            });
        }
        const opts = ti.opts;
        // figure out if this transition is the root one or a
        // child of a parent nav that has the root transition
        this._trnsId = this._trnsCtrl.getRootTrnsId(this);
        if (this._trnsId === null) {
            // this is the root transition, meaning all child navs and their views
            // should be added as a child transition to this one
            this._trnsId = this._trnsCtrl.nextId();
        }
        // create the transition options
        const animationOpts = {
            animation: opts.animation,
            direction: opts.direction,
            duration: (opts.animate === false ? 0 : opts.duration),
            easing: opts.easing,
            isRTL: this._config.plt.isRTL,
            ev: opts.ev,
        };
        // create the transition animation from the TransitionController
        // this will either create the root transition, or add it as a child transition
        const transition = this._trnsCtrl.get(this._trnsId, enteringView, leavingView, animationOpts);
        // ensure any swipeback transitions are cleared out
        this._sbTrns && this._sbTrns.destroy();
        this._sbTrns = null;
        // swipe to go back root transition
        if (transition.isRoot() && opts.progressAnimation) {
            this._sbTrns = transition;
        }
        // transition start has to be registered before attaching the view to the DOM!
        const promise = new Promise(resolve => transition.registerStart(resolve)).then(() => {
            return this._transitionStart(transition, enteringView, leavingView, opts);
        });
        if (enteringView && (enteringView._state === STATE_INITIALIZED)) {
            // render the entering component in the DOM
            // this would also render new child navs/views
            // which may have their very own async canEnter/Leave tests
            // ******** DOM WRITE ****************
            this._viewAttachToDOM(enteringView, enteringView._cmp, this._viewport);
        }
        if (!transition.hasChildren) {
            // lowest level transition, so kick it off and let it bubble up to start all of them
            transition.start();
        }
        return promise;
    }
    _transitionStart(transition, enteringView, leavingView, opts) {
        (void 0) /* assert */;
        this._trnsId = null;
        // set the correct zIndex for the entering and leaving views
        // ******** DOM WRITE ****************
        setZIndex(this, enteringView, leavingView, opts.direction, this._renderer);
        // always ensure the entering view is viewable
        // ******** DOM WRITE ****************
        enteringView && enteringView._domShow(true, this._renderer);
        // always ensure the leaving view is viewable
        // ******** DOM WRITE ****************
        leavingView && leavingView._domShow(true, this._renderer);
        // initialize the transition
        transition.init();
        // we should animate (duration > 0) if the pushed page is not the first one (startup)
        // or if it is a portal (modal, actionsheet, etc.)
        const isFirstPage = !this._init && this._views.length === 1;
        const shouldNotAnimate = isFirstPage && !this._isPortal;
        const canNotAnimate = this._config.get('animate') === false;
        if (shouldNotAnimate || canNotAnimate) {
            opts.animate = false;
        }
        if (opts.animate === false) {
            // if it was somehow set to not animation, then make the duration zero
            transition.duration(0);
        }
        // create a callback that needs to run within zone
        // that will fire off the willEnter/Leave lifecycle events at the right time
        transition.beforeAddRead(this._viewsWillLifecycles.bind(this, enteringView, leavingView));
        // get the set duration of this transition
        const duration = transition.getDuration();
        // create a callback for when the animation is done
        const promise = new Promise(resolve => {
            transition.onFinish(resolve);
        });
        if (transition.isRoot()) {
            // this is the top most, or only active transition, so disable the app
            // add XXms to the duration the app is disabled when the keyboard is open
            if (duration > DISABLE_APP_MINIMUM_DURATION && opts.disableApp !== false) {
                // if this transition has a duration and this is the root transition
                // then set that the app is actively disabled
                this._app.setEnabled(false, duration + ACTIVE_TRANSITION_OFFSET, opts.minClickBlockDuration);
            }
            else {
                (void 0) /* console.debug */;
            }
            // cool, let's do this, start the transition
            if (opts.progressAnimation) {
                // this is a swipe to go back, just get the transition progress ready
                // kick off the swipe animation start
                transition.progressStart();
            }
            else {
                // only the top level transition should actually start "play"
                // kick it off and let it play through
                // ******** DOM WRITE ****************
                transition.play();
            }
        }
        return promise.then(() => this._zone.run(() => {
            return this._transitionFinish(transition, opts);
        }));
    }
    _transitionFinish(transition, opts) {
        const hasCompleted = transition.hasCompleted;
        const enteringView = transition.enteringView;
        const leavingView = transition.leavingView;
        // mainly for testing
        let enteringName;
        let leavingName;
        if (hasCompleted) {
            // transition has completed (went from 0 to 1)
            if (enteringView) {
                enteringName = enteringView.name;
                this._didEnter(enteringView);
            }
            if (leavingView) {
                leavingName = leavingView.name;
                this._didLeave(leavingView);
            }
            this._cleanup(enteringView);
        }
        else {
            // If transition does not complete, we have to cleanup anyway, because
            // previous pages in the stack are not hidden probably.
            this._cleanup(leavingView);
        }
        if (transition.isRoot()) {
            // this is the root transition
            // it's safe to destroy this transition
            this._trnsCtrl.destroy(transition.trnsId);
            // it's safe to enable the app again
            this._app.setEnabled(true);
            // mark ourselves as not transitioning - `deepLinker navchange` requires this
            // TODO - probably could be resolved in a better way
            this.setTransitioning(false);
            if (!this.hasChildren() && opts.updateUrl !== false) {
                // notify deep linker of the nav change
                // if a direction was provided and should update url
                this._linker.navChange(opts.direction);
            }
            if (opts.keyboardClose !== false) {
                // the keyboard is still open!
                // no problem, let's just close for them
                this.plt.focusOutActiveElement();
            }
        }
        return {
            hasCompleted: hasCompleted,
            requiresTransition: true,
            enteringName: enteringName,
            leavingName: leavingName,
            direction: opts.direction
        };
    }
    _viewsWillLifecycles(enteringView, leavingView) {
        if (enteringView || leavingView) {
            this._zone.run(() => {
                // Here, the order is important. WillLeave must be called before WillEnter.
                if (leavingView) {
                    const willUnload = enteringView ? leavingView.index > enteringView.index : true;
                    this._willLeave(leavingView, willUnload);
                }
                enteringView && this._willEnter(enteringView);
            });
        }
    }
    _insertViewAt(view, index) {
        const existingIndex = this._views.indexOf(view);
        if (existingIndex > -1) {
            // this view is already in the stack!!
            // move it to its new location
            (void 0) /* assert */;
            this._views.splice(index, 0, this._views.splice(existingIndex, 1)[0]);
        }
        else {
            (void 0) /* assert */;
            // this is a new view to add to the stack
            // create the new entering view
            view._setNav(this);
            // give this inserted view an ID
            this._ids++;
            if (!view.id) {
                view.id = `${this.id}-${this._ids}`;
            }
            // insert the entering view into the correct index in the stack
            this._views.splice(index, 0, view);
        }
    }
    _removeView(view) {
        (void 0) /* assert */;
        const views = this._views;
        const index = views.indexOf(view);
        (void 0) /* assert */;
        if (index >= 0) {
            views.splice(index, 1);
        }
    }
    _destroyView(view) {
        view._destroy(this._renderer);
        this._removeView(view);
    }
    /**
     * DOM WRITE
     */
    _cleanup(activeView) {
        // ok, cleanup time!! Destroy all of the views that are
        // INACTIVE and come after the active view
        // only do this if the views exist, though
        if (!this._destroyed) {
            const activeViewIndex = this._views.indexOf(activeView);
            const views = this._views;
            let reorderZIndexes = false;
            let view;
            let i;
            for (i = views.length - 1; i >= 0; i--) {
                view = views[i];
                if (i > activeViewIndex) {
                    // this view comes after the active view
                    // let's unload it
                    this._willUnload(view);
                    this._destroyView(view);
                }
                else if (i < activeViewIndex && !this._isPortal) {
                    // this view comes before the active view
                    // and it is not a portal then ensure it is hidden
                    view._domShow(false, this._renderer);
                }
                if (view._zIndex <= 0) {
                    reorderZIndexes = true;
                }
            }
            if (!this._isPortal && reorderZIndexes) {
                for (i = 0; i < views.length; i++) {
                    view = views[i];
                    // ******** DOM WRITE ****************
                    view._setZIndex(view._zIndex + INIT_ZINDEX + 1, this._renderer);
                }
            }
        }
    }
    _preLoad(view) {
        (void 0) /* assert */;
        view._preLoad();
    }
    _willLoad(view) {
        (void 0) /* assert */;
        try {
            view._willLoad();
        }
        catch (e) {
            this._errHandler && this._errHandler.handleError(e);
        }
    }
    _didLoad(view) {
        (void 0) /* assert */;
        (void 0) /* assert */;
        try {
            view._didLoad();
            this.viewDidLoad.emit(view);
            this._app.viewDidLoad.emit(view);
        }
        catch (e) {
            this._errHandler && this._errHandler.handleError(e);
        }
    }
    _willEnter(view) {
        (void 0) /* assert */;
        (void 0) /* assert */;
        try {
            view._willEnter();
            this.viewWillEnter.emit(view);
            this._app.viewWillEnter.emit(view);
        }
        catch (e) {
            this._errHandler && this._errHandler.handleError(e);
        }
    }
    _didEnter(view) {
        (void 0) /* assert */;
        (void 0) /* assert */;
        try {
            view._didEnter();
            this.viewDidEnter.emit(view);
            this._app.viewDidEnter.emit(view);
        }
        catch (e) {
            this._errHandler && this._errHandler.handleError(e);
        }
    }
    _willLeave(view, willUnload) {
        (void 0) /* assert */;
        (void 0) /* assert */;
        try {
            view._willLeave(willUnload);
            this.viewWillLeave.emit(view);
            this._app.viewWillLeave.emit(view);
        }
        catch (e) {
            this._errHandler && this._errHandler.handleError(e);
        }
    }
    _didLeave(view) {
        (void 0) /* assert */;
        (void 0) /* assert */;
        try {
            view._didLeave();
            this.viewDidLeave.emit(view);
            this._app.viewDidLeave.emit(view);
        }
        catch (e) {
            this._errHandler && this._errHandler.handleError(e);
        }
    }
    _willUnload(view) {
        (void 0) /* assert */;
        (void 0) /* assert */;
        try {
            view._willUnload();
            this.viewWillUnload.emit(view);
            this._app.viewWillUnload.emit(view);
        }
        catch (e) {
            this._errHandler && this._errHandler.handleError(e);
        }
    }
    hasChildren() {
        return this._children && this._children.length > 0;
    }
    getActiveChildNavs() {
        return this._children;
    }
    getAllChildNavs() {
        return this._children;
    }
    registerChildNav(container) {
        this._children.push(container);
    }
    unregisterChildNav(nav) {
        this._children = this._children.filter(child => child !== nav);
    }
    destroy() {
        const views = this._views;
        let view;
        for (var i = 0; i < views.length; i++) {
            view = views[i];
            view._willUnload();
            view._destroy(this._renderer);
        }
        // release swipe back gesture and transition
        this._sbGesture && this._sbGesture.destroy();
        this._sbTrns && this._sbTrns.destroy();
        this._queue = this._views = this._sbGesture = this._sbTrns = null;
        // Unregister navcontroller
        if (this.parent && this.parent.unregisterChildNav) {
            this.parent.unregisterChildNav(this);
        }
        else if (this._app) {
            this._app.unregisterRootNav(this);
        }
        this._destroyed = true;
    }
    swipeBackStart() {
        if (this.isTransitioning() || this._queue.length > 0) {
            return;
        }
        // default the direction to "back";
        const opts = {
            direction: DIRECTION_BACK,
            progressAnimation: true
        };
        this._queueTrns({
            removeStart: -1,
            removeCount: 1,
            opts: opts,
        }, null);
    }
    swipeBackProgress(stepValue) {
        if (this._sbTrns && this._sbGesture) {
            // continue to disable the app while actively dragging
            this._app.setEnabled(false, ACTIVE_TRANSITION_DEFAULT);
            this.setTransitioning(true);
            // set the transition animation's progress
            this._sbTrns.progressStep(stepValue);
        }
    }
    swipeBackEnd(shouldComplete, currentStepValue, velocity) {
        if (this._sbTrns && this._sbGesture) {
            // the swipe back gesture has ended
            var dur = this._sbTrns.getDuration() / (Math.abs(velocity) + 1);
            this._sbTrns.progressEnd(shouldComplete, currentStepValue, dur);
        }
    }
    _swipeBackCheck() {
        if (this.canSwipeBack()) {
            if (!this._sbGesture) {
                this._sbGesture = new SwipeBackGesture(this.plt, this, this._gestureCtrl, this._domCtrl);
            }
            this._sbGesture.listen();
        }
        else if (this._sbGesture) {
            this._sbGesture.unlisten();
        }
    }
    canSwipeBack() {
        return (this._sbEnabled &&
            !this._isPortal &&
            !this._children.length &&
            !this.isTransitioning() &&
            this._app.isEnabled() &&
            this.canGoBack());
    }
    canGoBack() {
        const activeView = this.getActive();
        return !!(activeView && activeView.enableBack());
    }
    isTransitioning() {
        return this._trnsTm;
    }
    setTransitioning(isTransitioning) {
        this._trnsTm = isTransitioning;
    }
    getActive() {
        return this._views[this._views.length - 1];
    }
    isActive(view) {
        return (view === this.getActive());
    }
    getByIndex(index) {
        return this._views[index];
    }
    getPrevious(view) {
        // returns the view controller which is before the given view controller.
        if (!view) {
            view = this.getActive();
        }
        const views = this._views;
        const index = views.indexOf(view);
        return (index > 0) ? views[index - 1] : null;
    }
    first() {
        // returns the first view controller in this nav controller's stack.
        return this._views[0];
    }
    last() {
        // returns the last page in this nav controller's stack.
        const views = this._views;
        return views[views.length - 1];
    }
    indexOf(view) {
        // returns the index number of the given view controller.
        return this._views.indexOf(view);
    }
    length() {
        return this._views.length;
    }
    getViews() {
        return this._views;
    }
    /**
     * Return a view controller
     */
    getViewById(id) {
        for (const vc of this._views) {
            if (vc && vc.id === id) {
                return vc;
            }
        }
        return null;
    }
    isSwipeBackEnabled() {
        return this._sbEnabled;
    }
    dismissPageChangeViews() {
        for (let view of this._views) {
            if (view.data && view.data.dismissOnPageChange) {
                view.dismiss().catch(() => { });
            }
        }
    }
    setViewport(val) {
        this._viewport = val;
    }
    resize() {
        const active = this.getActive();
        if (!active) {
            return;
        }
        const content = active.getIONContent();
        content && content.resize();
    }
    goToRoot(_opts) {
        return Promise.reject(new Error('goToRoot needs to be implemented by child class'));
    }
    /*
     * @private
     */
    getType() {
        return 'nav';
    }
    /*
     * @private
     */
    getSecondaryIdentifier() {
        return null;
    }
    /**
     * Returns the active child navigation.
     */
    getActiveChildNav() {
        console.warn('(getActiveChildNav) is deprecated and will be removed in the next major release. Use getActiveChildNavs instead.');
        return this._children[this._children.length - 1];
    }
}
NavControllerBase.propDecorators = {
    'swipeBackEnabled': [{ type: Input },],
};
let ctrlIds = -1;
const DISABLE_APP_MINIMUM_DURATION = 64;
const ACTIVE_TRANSITION_DEFAULT = 5000;
const ACTIVE_TRANSITION_OFFSET = 2000;
//# sourceMappingURL=nav-controller-base.js.map