| import { isObservable, of, Subject } from 'rxjs'; |
| import { ɵɵdefineInjectable, Injectable, InjectionToken } from '@angular/core'; |
| |
| /** |
| * @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 |
| */ |
| class DataSource { |
| } |
| /** Checks whether an object is a data source. */ |
| function isDataSource(value) { |
| // Check if the value is a DataSource by observing if it has a connect function. Cannot |
| // be checked as an `instanceof DataSource` since people could create their own sources |
| // that match the interface, but don't extend DataSource. |
| return value && typeof value.connect === 'function'; |
| } |
| |
| /** |
| * @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 |
| */ |
| /** DataSource wrapper for a native array. */ |
| class ArrayDataSource extends DataSource { |
| constructor(_data) { |
| super(); |
| this._data = _data; |
| } |
| connect() { |
| return isObservable(this._data) ? this._data : of(this._data); |
| } |
| disconnect() { } |
| } |
| |
| /** |
| * @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 |
| */ |
| |
| /** |
| * @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 destroys views when they are removed from a |
| * {@link ViewContainerRef}. When new items are inserted into the container, |
| * the repeater will always construct a new embedded view for each item. |
| * |
| * @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. |
| */ |
| class _DisposeViewRepeaterStrategy { |
| applyChanges(changes, viewContainerRef, itemContextFactory, itemValueResolver, itemViewChanged) { |
| changes.forEachOperation((record, adjustedPreviousIndex, currentIndex) => { |
| let view; |
| let operation; |
| if (record.previousIndex == null) { |
| const insertContext = itemContextFactory(record, adjustedPreviousIndex, currentIndex); |
| view = viewContainerRef.createEmbeddedView(insertContext.templateRef, insertContext.context, insertContext.index); |
| operation = 1 /* INSERTED */; |
| } |
| else if (currentIndex == null) { |
| viewContainerRef.remove(adjustedPreviousIndex); |
| operation = 3 /* REMOVED */; |
| } |
| else { |
| view = viewContainerRef.get(adjustedPreviousIndex); |
| viewContainerRef.move(view, currentIndex); |
| operation = 2 /* MOVED */; |
| } |
| if (itemViewChanged) { |
| itemViewChanged({ |
| context: view === null || view === void 0 ? void 0 : view.context, |
| operation, |
| record, |
| }); |
| } |
| }); |
| } |
| detach() { |
| } |
| } |
| |
| /** |
| * @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. |
| */ |
| 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; |
| } |
| } |
| |
| /** |
| * @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 |
| */ |
| /** |
| * Class to be used to power selecting one or more options from a list. |
| */ |
| class SelectionModel { |
| constructor(_multiple = false, initiallySelectedValues, _emitChanges = true) { |
| this._multiple = _multiple; |
| this._emitChanges = _emitChanges; |
| /** Currently-selected values. */ |
| this._selection = new Set(); |
| /** Keeps track of the deselected options that haven't been emitted by the change event. */ |
| this._deselectedToEmit = []; |
| /** Keeps track of the selected options that haven't been emitted by the change event. */ |
| this._selectedToEmit = []; |
| /** Event emitted when the value has changed. */ |
| this.changed = new Subject(); |
| if (initiallySelectedValues && initiallySelectedValues.length) { |
| if (_multiple) { |
| initiallySelectedValues.forEach(value => this._markSelected(value)); |
| } |
| else { |
| this._markSelected(initiallySelectedValues[0]); |
| } |
| // Clear the array in order to avoid firing the change event for preselected values. |
| this._selectedToEmit.length = 0; |
| } |
| } |
| /** Selected values. */ |
| get selected() { |
| if (!this._selected) { |
| this._selected = Array.from(this._selection.values()); |
| } |
| return this._selected; |
| } |
| /** |
| * Selects a value or an array of values. |
| */ |
| select(...values) { |
| this._verifyValueAssignment(values); |
| values.forEach(value => this._markSelected(value)); |
| this._emitChangeEvent(); |
| } |
| /** |
| * Deselects a value or an array of values. |
| */ |
| deselect(...values) { |
| this._verifyValueAssignment(values); |
| values.forEach(value => this._unmarkSelected(value)); |
| this._emitChangeEvent(); |
| } |
| /** |
| * Toggles a value between selected and deselected. |
| */ |
| toggle(value) { |
| this.isSelected(value) ? this.deselect(value) : this.select(value); |
| } |
| /** |
| * Clears all of the selected values. |
| */ |
| clear() { |
| this._unmarkAll(); |
| this._emitChangeEvent(); |
| } |
| /** |
| * Determines whether a value is selected. |
| */ |
| isSelected(value) { |
| return this._selection.has(value); |
| } |
| /** |
| * Determines whether the model does not have a value. |
| */ |
| isEmpty() { |
| return this._selection.size === 0; |
| } |
| /** |
| * Determines whether the model has a value. |
| */ |
| hasValue() { |
| return !this.isEmpty(); |
| } |
| /** |
| * Sorts the selected values based on a predicate function. |
| */ |
| sort(predicate) { |
| if (this._multiple && this.selected) { |
| this._selected.sort(predicate); |
| } |
| } |
| /** |
| * Gets whether multiple values can be selected. |
| */ |
| isMultipleSelection() { |
| return this._multiple; |
| } |
| /** Emits a change event and clears the records of selected and deselected values. */ |
| _emitChangeEvent() { |
| // Clear the selected values so they can be re-cached. |
| this._selected = null; |
| if (this._selectedToEmit.length || this._deselectedToEmit.length) { |
| this.changed.next({ |
| source: this, |
| added: this._selectedToEmit, |
| removed: this._deselectedToEmit |
| }); |
| this._deselectedToEmit = []; |
| this._selectedToEmit = []; |
| } |
| } |
| /** Selects a value. */ |
| _markSelected(value) { |
| if (!this.isSelected(value)) { |
| if (!this._multiple) { |
| this._unmarkAll(); |
| } |
| this._selection.add(value); |
| if (this._emitChanges) { |
| this._selectedToEmit.push(value); |
| } |
| } |
| } |
| /** Deselects a value. */ |
| _unmarkSelected(value) { |
| if (this.isSelected(value)) { |
| this._selection.delete(value); |
| if (this._emitChanges) { |
| this._deselectedToEmit.push(value); |
| } |
| } |
| } |
| /** Clears out the selected values. */ |
| _unmarkAll() { |
| if (!this.isEmpty()) { |
| this._selection.forEach(value => this._unmarkSelected(value)); |
| } |
| } |
| /** |
| * Verifies the value assignment and throws an error if the specified value array is |
| * including multiple values while the selection model is not supporting multiple values. |
| */ |
| _verifyValueAssignment(values) { |
| if (values.length > 1 && !this._multiple && (typeof ngDevMode === 'undefined' || ngDevMode)) { |
| throw getMultipleValuesInSingleSelectionError(); |
| } |
| } |
| } |
| /** |
| * Returns an error that reports that multiple values are passed into a selection model |
| * with a single value. |
| * @docs-private |
| */ |
| function getMultipleValuesInSingleSelectionError() { |
| return Error('Cannot pass multiple values into SelectionModel with single-value mode.'); |
| } |
| |
| /** |
| * @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 |
| */ |
| /** |
| * Class to coordinate unique selection based on name. |
| * Intended to be consumed as an Angular service. |
| * This service is needed because native radio change events are only fired on the item currently |
| * being selected, and we still need to uncheck the previous selection. |
| * |
| * This service does not *store* any IDs and names because they may change at any time, so it is |
| * less error-prone if they are simply passed through when the events occur. |
| */ |
| class UniqueSelectionDispatcher { |
| constructor() { |
| this._listeners = []; |
| } |
| /** |
| * Notify other items that selection for the given name has been set. |
| * @param id ID of the item. |
| * @param name Name of the item. |
| */ |
| notify(id, name) { |
| for (let listener of this._listeners) { |
| listener(id, name); |
| } |
| } |
| /** |
| * Listen for future changes to item selection. |
| * @return Function used to deregister listener |
| */ |
| listen(listener) { |
| this._listeners.push(listener); |
| return () => { |
| this._listeners = this._listeners.filter((registered) => { |
| return listener !== registered; |
| }); |
| }; |
| } |
| ngOnDestroy() { |
| this._listeners = []; |
| } |
| } |
| UniqueSelectionDispatcher.ɵprov = ɵɵdefineInjectable({ factory: function UniqueSelectionDispatcher_Factory() { return new UniqueSelectionDispatcher(); }, token: UniqueSelectionDispatcher, providedIn: "root" }); |
| UniqueSelectionDispatcher.decorators = [ |
| { type: Injectable, args: [{ providedIn: 'root' },] } |
| ]; |
| |
| /** |
| * @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 |
| */ |
| |
| /** |
| * @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 |
| */ |
| /** |
| * Injection token for {@link _ViewRepeater}. This token is for use by Angular Material only. |
| * @docs-private |
| */ |
| const _VIEW_REPEATER_STRATEGY = new InjectionToken('_ViewRepeater'); |
| |
| /** |
| * @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 |
| */ |
| |
| /** |
| * Generated bundle index. Do not edit. |
| */ |
| |
| export { ArrayDataSource, DataSource, SelectionModel, UniqueSelectionDispatcher, _DisposeViewRepeaterStrategy, _RecycleViewRepeaterStrategy, _VIEW_REPEATER_STRATEGY, getMultipleValuesInSingleSelectionError, isDataSource }; |
| //# sourceMappingURL=collections.js.map |
