/**
 * @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
 */
/**
 * A repeater that caches views when they are removed from a
 * {@link ViewContainerRef}. When new items are inserted into the container,
 * the repeater will reuse one of the cached views instead of creating a new
 * embedded view. Recycling cached views reduces the quantity of expensive DOM
 * inserts.
 *
 * @template T The type for the embedded view's $implicit property.
 * @template R The type for the item in each IterableDiffer change record.
 * @template C The type for the context passed to each embedded view.
 */
export class _RecycleViewRepeaterStrategy {
    constructor() {
        /**
         * The size of the cache used to store unused views.
         * Setting the cache size to `0` will disable caching. Defaults to 20 views.
         */
        this.viewCacheSize = 20;
        /**
         * View cache that stores embedded view instances that have been previously stamped out,
         * but don't are not currently rendered. The view repeater will reuse these views rather than
         * creating brand new ones.
         *
         * TODO(michaeljamesparsons) Investigate whether using a linked list would improve performance.
         */
        this._viewCache = [];
    }
    /** Apply changes to the DOM. */
    applyChanges(changes, viewContainerRef, itemContextFactory, itemValueResolver, itemViewChanged) {
        // Rearrange the views to put them in the right location.
        changes.forEachOperation((record, adjustedPreviousIndex, currentIndex) => {
            let view;
            let operation;
            if (record.previousIndex == null) { // Item added.
                const viewArgsFactory = () => itemContextFactory(record, adjustedPreviousIndex, currentIndex);
                view = this._insertView(viewArgsFactory, currentIndex, viewContainerRef, itemValueResolver(record));
                operation = view ? 1 /* INSERTED */ : 0 /* REPLACED */;
            }
            else if (currentIndex == null) { // Item removed.
                this._detachAndCacheView(adjustedPreviousIndex, viewContainerRef);
                operation = 3 /* REMOVED */;
            }
            else { // Item moved.
                view = this._moveView(adjustedPreviousIndex, currentIndex, viewContainerRef, itemValueResolver(record));
                operation = 2 /* MOVED */;
            }
            if (itemViewChanged) {
                itemViewChanged({
                    context: view === null || view === void 0 ? void 0 : view.context,
                    operation,
                    record,
                });
            }
        });
    }
    detach() {
        for (const view of this._viewCache) {
            view.destroy();
        }
        this._viewCache = [];
    }
    /**
     * Inserts a view for a new item, either from the cache or by creating a new
     * one. Returns `undefined` if the item was inserted into a cached view.
     */
    _insertView(viewArgsFactory, currentIndex, viewContainerRef, value) {
        const cachedView = this._insertViewFromCache(currentIndex, viewContainerRef);
        if (cachedView) {
            cachedView.context.$implicit = value;
            return undefined;
        }
        const viewArgs = viewArgsFactory();
        return viewContainerRef.createEmbeddedView(viewArgs.templateRef, viewArgs.context, viewArgs.index);
    }
    /** Detaches the view at the given index and inserts into the view cache. */
    _detachAndCacheView(index, viewContainerRef) {
        const detachedView = viewContainerRef.detach(index);
        this._maybeCacheView(detachedView, viewContainerRef);
    }
    /** Moves view at the previous index to the current index. */
    _moveView(adjustedPreviousIndex, currentIndex, viewContainerRef, value) {
        const view = viewContainerRef.get(adjustedPreviousIndex);
        viewContainerRef.move(view, currentIndex);
        view.context.$implicit = value;
        return view;
    }
    /**
     * Cache the given detached view. If the cache is full, the view will be
     * destroyed.
     */
    _maybeCacheView(view, viewContainerRef) {
        if (this._viewCache.length < this.viewCacheSize) {
            this._viewCache.push(view);
        }
        else {
            const index = viewContainerRef.indexOf(view);
            // The host component could remove views from the container outside of
            // the view repeater. It's unlikely this will occur, but just in case,
            // destroy the view on its own, otherwise destroy it through the
            // container to ensure that all the references are removed.
            if (index === -1) {
                view.destroy();
            }
            else {
                viewContainerRef.remove(index);
            }
        }
    }
    /** Inserts a recycled view from the cache at the given index. */
    _insertViewFromCache(index, viewContainerRef) {
        const cachedView = this._viewCache.pop();
        if (cachedView) {
            viewContainerRef.insert(cachedView, index);
        }
        return cachedView || null;
    }
}
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"recycle-view-repeater-strategy.js","sourceRoot":"","sources":["../../../../../../src/cdk/collections/recycle-view-repeater-strategy.ts"],"names":[],"mappings":"AAAA;;;;;;GAMG;AAmBH;;;;;;;;;;GAUG;AACH,MAAM,OAAO,4BAA4B;IAAzC;QAEE;;;WAGG;QACH,kBAAa,GAAW,EAAE,CAAC;QAE3B;;;;;;WAMG;QACK,eAAU,GAAyB,EAAE,CAAC;IA8GhD,CAAC;IA5GC,gCAAgC;IAChC,YAAY,CAAC,OAA2B,EAC3B,gBAAkC,EAClC,kBAA4D,EAC5D,iBAAuD,EACvD,eAAgD;QAC3D,yDAAyD;QACzD,OAAO,CAAC,gBAAgB,CAAC,CAAC,MAA+B,EAC/B,qBAAoC,EACpC,YAA2B,EAAE,EAAE;YACvD,IAAI,IAAoC,CAAC;YACzC,IAAI,SAAiC,CAAC;YACtC,IAAI,MAAM,CAAC,aAAa,IAAI,IAAI,EAAE,EAAG,cAAc;gBACjD,MAAM,eAAe,GAAG,GAAG,EAAE,CAAC,kBAAkB,CAC5C,MAAM,EAAE,qBAAqB,EAAE,YAAY,CAAC,CAAC;gBACjD,IAAI,GAAG,IAAI,CAAC,WAAW,CAAC,eAAe,EAAE,YAAa,EAAE,gBAAgB,EACpE,iBAAiB,CAAC,MAAM,CAAC,CAAC,CAAC;gBAC/B,SAAS,GAAG,IAAI,CAAC,CAAC,kBAAiC,CAAC,iBAAgC,CAAC;aACtF;iBAAM,IAAI,YAAY,IAAI,IAAI,EAAE,EAAG,gBAAgB;gBAClD,IAAI,CAAC,mBAAmB,CAAC,qBAAsB,EAAE,gBAAgB,CAAC,CAAC;gBACnE,SAAS,kBAAiC,CAAC;aAC5C;iBAAM,EAAG,cAAc;gBACtB,IAAI,GAAG,IAAI,CAAC,SAAS,CAAC,qBAAsB,EAAE,YAAa,EAAE,gBAAgB,EACzE,iBAAiB,CAAC,MAAM,CAAC,CAAC,CAAC;gBAC/B,SAAS,gBAA+B,CAAC;aAC1C;YAED,IAAI,eAAe,EAAE;gBACnB,eAAe,CAAC;oBACd,OAAO,EAAE,IAAI,aAAJ,IAAI,uBAAJ,IAAI,CAAE,OAAO;oBACtB,SAAS;oBACT,MAAM;iBACP,CAAC,CAAC;aACJ;QACH,CAAC,CAAC,CAAC;IACL,CAAC;IAED,MAAM;QACJ,KAAK,MAAM,IAAI,IAAI,IAAI,CAAC,UAAU,EAAE;YAClC,IAAI,CAAC,OAAO,EAAE,CAAC;SAChB;QACD,IAAI,CAAC,UAAU,GAAG,EAAE,CAAC;IACvB,CAAC;IAED;;;OAGG;IACK,WAAW,CAAC,eAAqD,EAAE,YAAoB,EAC3E,gBAAkC,EAClC,KAAQ;QAC1B,MAAM,UAAU,GAAG,IAAI,CAAC,oBAAoB,CAAC,YAAa,EAAE,gBAAgB,CAAC,CAAC;QAC9E,IAAI,UAAU,EAAE;YACd,UAAU,CAAC,OAAO,CAAC,SAAS,GAAG,KAAK,CAAC;YACrC,OAAO,SAAS,CAAC;SAClB;QAED,MAAM,QAAQ,GAAG,eAAe,EAAE,CAAC;QACnC,OAAO,gBAAgB,CAAC,kBAAkB,CACtC,QAAQ,CAAC,WAAW,EAAE,QAAQ,CAAC,OAAO,EAAE,QAAQ,CAAC,KAAK,CAAC,CAAC;IAC9D,CAAC;IAED,4EAA4E;IACpE,mBAAmB,CAAC,KAAa,EAAE,gBAAkC;QAC3E,MAAM,YAAY,GAAG,gBAAgB,CAAC,MAAM,CAAC,KAAK,CAAuB,CAAC;QAC1E,IAAI,CAAC,eAAe,CAAC,YAAY,EAAE,gBAAgB,CAAC,CAAC;IACvD,CAAC;IAED,6DAA6D;IACrD,SAAS,CAAC,qBAA6B,EAAE,YAAoB,EACnD,gBAAkC,EAAE,KAAQ;QAC5D,MAAM,IAAI,GAAG,gBAAgB,CAAC,GAAG,CAAC,qBAAsB,CAAuB,CAAC;QAChF,gBAAgB,CAAC,IAAI,CAAC,IAAI,EAAE,YAAY,CAAC,CAAC;QAC1C,IAAI,CAAC,OAAO,CAAC,SAAS,GAAG,KAAK,CAAC;QAC/B,OAAO,IAAI,CAAC;IACd,CAAC;IAED;;;OAGG;IACK,eAAe,CAAC,IAAwB,EAAE,gBAAkC;QAClF,IAAI,IAAI,CAAC,UAAU,CAAC,MAAM,GAAG,IAAI,CAAC,aAAa,EAAE;YAC/C,IAAI,CAAC,UAAU,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;SAC5B;aAAM;YACL,MAAM,KAAK,GAAG,gBAAgB,CAAC,OAAO,CAAC,IAAI,CAAC,CAAC;YAE7C,sEAAsE;YACtE,sEAAsE;YACtE,gEAAgE;YAChE,2DAA2D;YAC3D,IAAI,KAAK,KAAK,CAAC,CAAC,EAAE;gBAChB,IAAI,CAAC,OAAO,EAAE,CAAC;aAChB;iBAAM;gBACL,gBAAgB,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC;aAChC;SACF;IACH,CAAC;IAED,iEAAiE;IACzD,oBAAoB,CAAC,KAAa,EACb,gBAAkC;QAC7D,MAAM,UAAU,GAAG,IAAI,CAAC,UAAU,CAAC,GAAG,EAAE,CAAC;QACzC,IAAI,UAAU,EAAE;YACd,gBAAgB,CAAC,MAAM,CAAC,UAAU,EAAE,KAAK,CAAC,CAAC;SAC5C;QACD,OAAO,UAAU,IAAI,IAAI,CAAC;IAC5B,CAAC;CACF","sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {\n  EmbeddedViewRef,\n  IterableChangeRecord,\n  IterableChanges,\n  ViewContainerRef\n} from '@angular/core';\nimport {\n  _ViewRepeater,\n  _ViewRepeaterItemChanged,\n  _ViewRepeaterItemContext,\n  _ViewRepeaterItemContextFactory,\n  _ViewRepeaterItemInsertArgs,\n  _ViewRepeaterItemValueResolver,\n  _ViewRepeaterOperation\n} from './view-repeater';\n\n\n/**\n * A repeater that caches views when they are removed from a\n * {@link ViewContainerRef}. When new items are inserted into the container,\n * the repeater will reuse one of the cached views instead of creating a new\n * embedded view. Recycling cached views reduces the quantity of expensive DOM\n * inserts.\n *\n * @template T The type for the embedded view's $implicit property.\n * @template R The type for the item in each IterableDiffer change record.\n * @template C The type for the context passed to each embedded view.\n */\nexport class _RecycleViewRepeaterStrategy<T, R, C extends _ViewRepeaterItemContext<T>>\n    implements _ViewRepeater<T, R, C> {\n  /**\n   * The size of the cache used to store unused views.\n   * Setting the cache size to `0` will disable caching. Defaults to 20 views.\n   */\n  viewCacheSize: number = 20;\n\n  /**\n   * View cache that stores embedded view instances that have been previously stamped out,\n   * but don't are not currently rendered. The view repeater will reuse these views rather than\n   * creating brand new ones.\n   *\n   * TODO(michaeljamesparsons) Investigate whether using a linked list would improve performance.\n   */\n  private _viewCache: EmbeddedViewRef<C>[] = [];\n\n  /** Apply changes to the DOM. */\n  applyChanges(changes: IterableChanges<R>,\n               viewContainerRef: ViewContainerRef,\n               itemContextFactory: _ViewRepeaterItemContextFactory<T, R, C>,\n               itemValueResolver: _ViewRepeaterItemValueResolver<T, R>,\n               itemViewChanged?: _ViewRepeaterItemChanged<R, C>) {\n    // Rearrange the views to put them in the right location.\n    changes.forEachOperation((record: IterableChangeRecord<R>,\n                              adjustedPreviousIndex: number | null,\n                              currentIndex: number | null) => {\n      let view: EmbeddedViewRef<C> | undefined;\n      let operation: _ViewRepeaterOperation;\n      if (record.previousIndex == null) {  // Item added.\n        const viewArgsFactory = () => itemContextFactory(\n            record, adjustedPreviousIndex, currentIndex);\n        view = this._insertView(viewArgsFactory, currentIndex!, viewContainerRef,\n            itemValueResolver(record));\n        operation = view ? _ViewRepeaterOperation.INSERTED : _ViewRepeaterOperation.REPLACED;\n      } else if (currentIndex == null) {  // Item removed.\n        this._detachAndCacheView(adjustedPreviousIndex!, viewContainerRef);\n        operation = _ViewRepeaterOperation.REMOVED;\n      } else {  // Item moved.\n        view = this._moveView(adjustedPreviousIndex!, currentIndex!, viewContainerRef,\n            itemValueResolver(record));\n        operation = _ViewRepeaterOperation.MOVED;\n      }\n\n      if (itemViewChanged) {\n        itemViewChanged({\n          context: view?.context,\n          operation,\n          record,\n        });\n      }\n    });\n  }\n\n  detach() {\n    for (const view of this._viewCache) {\n      view.destroy();\n    }\n    this._viewCache = [];\n  }\n\n  /**\n   * Inserts a view for a new item, either from the cache or by creating a new\n   * one. Returns `undefined` if the item was inserted into a cached view.\n   */\n  private _insertView(viewArgsFactory: () => _ViewRepeaterItemInsertArgs<C>, currentIndex: number,\n                      viewContainerRef: ViewContainerRef,\n                      value: T): EmbeddedViewRef<C> | undefined {\n    const cachedView = this._insertViewFromCache(currentIndex!, viewContainerRef);\n    if (cachedView) {\n      cachedView.context.$implicit = value;\n      return undefined;\n    }\n\n    const viewArgs = viewArgsFactory();\n    return viewContainerRef.createEmbeddedView(\n        viewArgs.templateRef, viewArgs.context, viewArgs.index);\n  }\n\n  /** Detaches the view at the given index and inserts into the view cache. */\n  private _detachAndCacheView(index: number, viewContainerRef: ViewContainerRef) {\n    const detachedView = viewContainerRef.detach(index) as EmbeddedViewRef<C>;\n    this._maybeCacheView(detachedView, viewContainerRef);\n  }\n\n  /** Moves view at the previous index to the current index. */\n  private _moveView(adjustedPreviousIndex: number, currentIndex: number,\n                    viewContainerRef: ViewContainerRef, value: T): EmbeddedViewRef<C> {\n    const view = viewContainerRef.get(adjustedPreviousIndex!) as EmbeddedViewRef<C>;\n    viewContainerRef.move(view, currentIndex);\n    view.context.$implicit = value;\n    return view;\n  }\n\n  /**\n   * Cache the given detached view. If the cache is full, the view will be\n   * destroyed.\n   */\n  private _maybeCacheView(view: EmbeddedViewRef<C>, viewContainerRef: ViewContainerRef) {\n    if (this._viewCache.length < this.viewCacheSize) {\n      this._viewCache.push(view);\n    } else {\n      const index = viewContainerRef.indexOf(view);\n\n      // The host component could remove views from the container outside of\n      // the view repeater. It's unlikely this will occur, but just in case,\n      // destroy the view on its own, otherwise destroy it through the\n      // container to ensure that all the references are removed.\n      if (index === -1) {\n        view.destroy();\n      } else {\n        viewContainerRef.remove(index);\n      }\n    }\n  }\n\n  /** Inserts a recycled view from the cache at the given index. */\n  private _insertViewFromCache(index: number,\n                               viewContainerRef: ViewContainerRef): EmbeddedViewRef<C> | null {\n    const cachedView = this._viewCache.pop();\n    if (cachedView) {\n      viewContainerRef.insert(cachedView, index);\n    }\n    return cachedView || null;\n  }\n}\n"]}