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/** * @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 */ import { assertInInjectionContext } from '../di'; import { createMultiResultQuerySignalFn, createSingleResultOptionalQuerySignalFn, createSingleResultRequiredQuerySignalFn, } from '../render3/query_reactive'; function viewChildFn(locator, opts) { ngDevMode && assertInInjectionContext(viewChild); return createSingleResultOptionalQuerySignalFn(); } function viewChildRequiredFn(locator, opts) { ngDevMode && assertInInjectionContext(viewChild); return createSingleResultRequiredQuerySignalFn(); } /** * Initializes a view child query. * * Consider using `viewChild.required` for queries that should always match. * * @usageNotes * Create a child query in your component by declaring a * class field and initializing it with the `viewChild()` function. * * ```ts * @Component({template: '<div #el></div><my-component #cmp />'}) * export class TestComponent { * divEl = viewChild<ElementRef>('el'); // Signal<ElementRef|undefined> * divElRequired = viewChild.required<ElementRef>('el'); // Signal<ElementRef> * cmp = viewChild(MyComponent); // Signal<MyComponent|undefined> * cmpRequired = viewChild.required(MyComponent); // Signal<MyComponent> * } * ``` * * @developerPreview * @initializerApiFunction */ export const viewChild = (() => { // Note: This may be considered a side-effect, but nothing will depend on // this assignment, unless this `viewChild` constant export is accessed. It's a // self-contained side effect that is local to the user facing `viewChild` export. viewChildFn.required = viewChildRequiredFn; return viewChildFn; })(); /** * Initializes a view children query. * * Query results are represented as a signal of a read-only collection containing all matched * elements. * * @usageNotes * Create a children query in your component by declaring a * class field and initializing it with the `viewChildren()` function. * * ```ts * @Component({...}) * export class TestComponent { * divEls = viewChildren<ElementRef>('el'); // Signal<ReadonlyArray<ElementRef>> * } * ``` * * @initializerApiFunction * @developerPreview */ export function viewChildren(locator, opts) { ngDevMode && assertInInjectionContext(viewChildren); return createMultiResultQuerySignalFn(); } export function contentChildFn(locator, opts) { ngDevMode && assertInInjectionContext(contentChild); return createSingleResultOptionalQuerySignalFn(); } function contentChildRequiredFn(locator, opts) { ngDevMode && assertInInjectionContext(contentChildren); return createSingleResultRequiredQuerySignalFn(); } /** * Initializes a content child query. Consider using `contentChild.required` for queries that should * always match. * * @usageNotes * Create a child query in your component by declaring a * class field and initializing it with the `contentChild()` function. * * ```ts * @Component({...}) * export class TestComponent { * headerEl = contentChild<ElementRef>('h'); // Signal<ElementRef|undefined> * headerElElRequired = contentChild.required<ElementRef>('h'); // Signal<ElementRef> * header = contentChild(MyHeader); // Signal<MyHeader|undefined> * headerRequired = contentChild.required(MyHeader); // Signal<MyHeader> * } * ``` * * @initializerApiFunction * @developerPreview */ export const contentChild = (() => { // Note: This may be considered a side-effect, but nothing will depend on // this assignment, unless this `viewChild` constant export is accessed. It's a // self-contained side effect that is local to the user facing `viewChild` export. contentChildFn.required = contentChildRequiredFn; return contentChildFn; })(); /** * Initializes a content children query. * * Query results are represented as a signal of a read-only collection containing all matched * elements. * * @usageNotes * Create a children query in your component by declaring a * class field and initializing it with the `contentChildren()` function. * * ```ts * @Component({...}) * export class TestComponent { * headerEl = contentChildren<ElementRef>('h'); // Signal<ReadonlyArray<ElementRef>> * } * ``` * * @initializerApiFunction * @developerPreview */ export function contentChildren(locator, opts) { return createMultiResultQuerySignalFn(); } //# sourceMappingURL=data:application/json;base64,{"version":3,"file":"queries.js","sourceRoot":"","sources":["../../../../../../../packages/core/src/authoring/queries.ts"],"names":[],"mappings":"AAAA;;;;;;GAMG;AAEH,OAAO,EAAC,wBAAwB,EAAC,MAAM,OAAO,CAAC;AAE/C,OAAO,EACL,8BAA8B,EAC9B,uCAAuC,EACvC,uCAAuC,GACxC,MAAM,2BAA2B,CAAC;AAGnC,SAAS,WAAW,CAClB,OAAyC,EACzC,IAAoC;IAEpC,SAAS,IAAI,wBAAwB,CAAC,SAAS,CAAC,CAAC;IACjD,OAAO,uCAAuC,EAAS,CAAC;AAC1D,CAAC;AAED,SAAS,mBAAmB,CAC1B,OAAyC,EACzC,IAAoC;IAEpC,SAAS,IAAI,wBAAwB,CAAC,SAAS,CAAC,CAAC;IACjD,OAAO,uCAAuC,EAAS,CAAC;AAC1D,CAAC;AAuCD;;;;;;;;;;;;;;;;;;;;;GAqBG;AACH,MAAM,CAAC,MAAM,SAAS,GAAsB,CAAC,GAAG,EAAE;IAChD,yEAAyE;IACzE,+EAA+E;IAC/E,kFAAkF;IACjF,WAAmB,CAAC,QAAQ,GAAG,mBAAmB,CAAC;IACpD,OAAO,WAA0E,CAAC;AACpF,CAAC,CAAC,EAAE,CAAC;AAUL;;;;;;;;;;;;;;;;;;;GAmBG;AACH,MAAM,UAAU,YAAY,CAC1B,OAAyC,EACzC,IAAoC;IAEpC,SAAS,IAAI,wBAAwB,CAAC,YAAY,CAAC,CAAC;IACpD,OAAO,8BAA8B,EAAS,CAAC;AACjD,CAAC;AAED,MAAM,UAAU,cAAc,CAC5B,OAAyC,EACzC,IAA2D;IAE3D,SAAS,IAAI,wBAAwB,CAAC,YAAY,CAAC,CAAC;IACpD,OAAO,uCAAuC,EAAS,CAAC;AAC1D,CAAC;AAED,SAAS,sBAAsB,CAC7B,OAAyC,EACzC,IAA2D;IAE3D,SAAS,IAAI,wBAAwB,CAAC,eAAe,CAAC,CAAC;IACvD,OAAO,uCAAuC,EAAS,CAAC;AAC1D,CAAC;AAqDD;;;;;;;;;;;;;;;;;;;;GAoBG;AACH,MAAM,CAAC,MAAM,YAAY,GAAyB,CAAC,GAAG,EAAE;IACtD,yEAAyE;IACzE,+EAA+E;IAC/E,kFAAkF;IACjF,cAAsB,CAAC,QAAQ,GAAG,sBAAsB,CAAC;IAC1D,OAAO,cAAmF,CAAC;AAC7F,CAAC,CAAC,EAAE,CAAC;AAWL;;;;;;;;;;;;;;;;;;;GAmBG;AACH,MAAM,UAAU,eAAe,CAC7B,OAAyC,EACzC,IAA2D;IAE3D,OAAO,8BAA8B,EAAS,CAAC;AACjD,CAAC","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 {assertInInjectionContext} from '../di';\nimport {ProviderToken} from '../di/provider_token';\nimport {\n  createMultiResultQuerySignalFn,\n  createSingleResultOptionalQuerySignalFn,\n  createSingleResultRequiredQuerySignalFn,\n} from '../render3/query_reactive';\nimport {Signal} from '../render3/reactivity/api';\n\nfunction viewChildFn<LocatorT, ReadT>(\n  locator: ProviderToken<LocatorT> | string,\n  opts?: {read?: ProviderToken<ReadT>},\n): Signal<ReadT | undefined> {\n  ngDevMode && assertInInjectionContext(viewChild);\n  return createSingleResultOptionalQuerySignalFn<ReadT>();\n}\n\nfunction viewChildRequiredFn<LocatorT, ReadT>(\n  locator: ProviderToken<LocatorT> | string,\n  opts?: {read?: ProviderToken<ReadT>},\n): Signal<ReadT> {\n  ngDevMode && assertInInjectionContext(viewChild);\n  return createSingleResultRequiredQuerySignalFn<ReadT>();\n}\n\n/**\n * Type of the `viewChild` function. The viewChild function creates a singular view query.\n *\n * It is a special function that also provides access to required query results via the `.required`\n * property.\n *\n * @developerPreview\n * @docsPrivate Ignored because `viewChild` is the canonical API entry.\n */\nexport interface ViewChildFunction {\n  /**\n   * Initializes a view child query. Consider using `viewChild.required` for queries that should\n   * always match.\n   *\n   * @developerPreview\n   */\n  <LocatorT>(locator: ProviderToken<LocatorT> | string): Signal<LocatorT | undefined>;\n  <LocatorT, ReadT>(\n    locator: ProviderToken<LocatorT> | string,\n    opts: {read: ProviderToken<ReadT>},\n  ): Signal<ReadT | undefined>;\n\n  /**\n   * Initializes a view child query that is expected to always match an element.\n   *\n   * @developerPreview\n   */\n  required: {\n    <LocatorT>(locator: ProviderToken<LocatorT> | string): Signal<LocatorT>;\n\n    <LocatorT, ReadT>(\n      locator: ProviderToken<LocatorT> | string,\n      opts: {read: ProviderToken<ReadT>},\n    ): Signal<ReadT>;\n  };\n}\n\n/**\n * Initializes a view child query.\n *\n * Consider using `viewChild.required` for queries that should always match.\n *\n * @usageNotes\n * Create a child query in your component by declaring a\n * class field and initializing it with the `viewChild()` function.\n *\n * ```ts\n * @Component({template: '<div #el></div><my-component #cmp />'})\n * export class TestComponent {\n *   divEl = viewChild<ElementRef>('el');                   // Signal<ElementRef|undefined>\n *   divElRequired = viewChild.required<ElementRef>('el');  // Signal<ElementRef>\n *   cmp = viewChild(MyComponent);                          // Signal<MyComponent|undefined>\n *   cmpRequired = viewChild.required(MyComponent);         // Signal<MyComponent>\n * }\n * ```\n *\n * @developerPreview\n * @initializerApiFunction\n */\nexport const viewChild: ViewChildFunction = (() => {\n  // Note: This may be considered a side-effect, but nothing will depend on\n  // this assignment, unless this `viewChild` constant export is accessed. It's a\n  // self-contained side effect that is local to the user facing `viewChild` export.\n  (viewChildFn as any).required = viewChildRequiredFn;\n  return viewChildFn as typeof viewChildFn & {required: typeof viewChildRequiredFn};\n})();\n\nexport function viewChildren<LocatorT>(\n  locator: ProviderToken<LocatorT> | string,\n): Signal<ReadonlyArray<LocatorT>>;\nexport function viewChildren<LocatorT, ReadT>(\n  locator: ProviderToken<LocatorT> | string,\n  opts: {read: ProviderToken<ReadT>},\n): Signal<ReadonlyArray<ReadT>>;\n\n/**\n * Initializes a view children query.\n *\n * Query results are represented as a signal of a read-only collection containing all matched\n * elements.\n *\n * @usageNotes\n * Create a children query in your component by declaring a\n * class field and initializing it with the `viewChildren()` function.\n *\n * ```ts\n * @Component({...})\n * export class TestComponent {\n *   divEls = viewChildren<ElementRef>('el');   // Signal<ReadonlyArray<ElementRef>>\n * }\n * ```\n *\n * @initializerApiFunction\n * @developerPreview\n */\nexport function viewChildren<LocatorT, ReadT>(\n  locator: ProviderToken<LocatorT> | string,\n  opts?: {read?: ProviderToken<ReadT>},\n): Signal<ReadonlyArray<ReadT>> {\n  ngDevMode && assertInInjectionContext(viewChildren);\n  return createMultiResultQuerySignalFn<ReadT>();\n}\n\nexport function contentChildFn<LocatorT, ReadT>(\n  locator: ProviderToken<LocatorT> | string,\n  opts?: {descendants?: boolean; read?: ProviderToken<ReadT>},\n): Signal<ReadT | undefined> {\n  ngDevMode && assertInInjectionContext(contentChild);\n  return createSingleResultOptionalQuerySignalFn<ReadT>();\n}\n\nfunction contentChildRequiredFn<LocatorT, ReadT>(\n  locator: ProviderToken<LocatorT> | string,\n  opts?: {descendants?: boolean; read?: ProviderToken<ReadT>},\n): Signal<ReadT> {\n  ngDevMode && assertInInjectionContext(contentChildren);\n  return createSingleResultRequiredQuerySignalFn<ReadT>();\n}\n\n/**\n * Type of the `contentChild` function.\n *\n * The contentChild function creates a singular content query. It is a special function that also\n * provides access to required query results via the `.required` property.\n *\n * @developerPreview\n * @docsPrivate Ignored because `contentChild` is the canonical API entry.\n */\nexport interface ContentChildFunction {\n  /**\n   * Initializes a content child query.\n   *\n   * Consider using `contentChild.required` for queries that should always match.\n   * @developerPreview\n   */\n  <LocatorT>(\n    locator: ProviderToken<LocatorT> | string,\n    opts?: {\n      descendants?: boolean;\n      read?: undefined;\n    },\n  ): Signal<LocatorT | undefined>;\n\n  <LocatorT, ReadT>(\n    locator: ProviderToken<LocatorT> | string,\n    opts: {\n      descendants?: boolean;\n      read: ProviderToken<ReadT>;\n    },\n  ): Signal<ReadT | undefined>;\n\n  /**\n   * Initializes a content child query that is always expected to match.\n   */\n  required: {\n    <LocatorT>(\n      locator: ProviderToken<LocatorT> | string,\n      opts?: {\n        descendants?: boolean;\n        read?: undefined;\n      },\n    ): Signal<LocatorT>;\n\n    <LocatorT, ReadT>(\n      locator: ProviderToken<LocatorT> | string,\n      opts: {descendants?: boolean; read: ProviderToken<ReadT>},\n    ): Signal<ReadT>;\n  };\n}\n\n/**\n * Initializes a content child query. Consider using `contentChild.required` for queries that should\n * always match.\n *\n * @usageNotes\n * Create a child query in your component by declaring a\n * class field and initializing it with the `contentChild()` function.\n *\n * ```ts\n * @Component({...})\n * export class TestComponent {\n *   headerEl = contentChild<ElementRef>('h');                    // Signal<ElementRef|undefined>\n *   headerElElRequired = contentChild.required<ElementRef>('h'); // Signal<ElementRef>\n *   header = contentChild(MyHeader);                             // Signal<MyHeader|undefined>\n *   headerRequired = contentChild.required(MyHeader);            // Signal<MyHeader>\n * }\n * ```\n *\n * @initializerApiFunction\n * @developerPreview\n */\nexport const contentChild: ContentChildFunction = (() => {\n  // Note: This may be considered a side-effect, but nothing will depend on\n  // this assignment, unless this `viewChild` constant export is accessed. It's a\n  // self-contained side effect that is local to the user facing `viewChild` export.\n  (contentChildFn as any).required = contentChildRequiredFn;\n  return contentChildFn as typeof contentChildFn & {required: typeof contentChildRequiredFn};\n})();\n\nexport function contentChildren<LocatorT>(\n  locator: ProviderToken<LocatorT> | string,\n  opts?: {descendants?: boolean; read?: undefined},\n): Signal<ReadonlyArray<LocatorT>>;\nexport function contentChildren<LocatorT, ReadT>(\n  locator: ProviderToken<LocatorT> | string,\n  opts: {descendants?: boolean; read: ProviderToken<ReadT>},\n): Signal<ReadonlyArray<ReadT>>;\n\n/**\n * Initializes a content children query.\n *\n * Query results are represented as a signal of a read-only collection containing all matched\n * elements.\n *\n * @usageNotes\n * Create a children query in your component by declaring a\n * class field and initializing it with the `contentChildren()` function.\n *\n * ```ts\n * @Component({...})\n * export class TestComponent {\n *   headerEl = contentChildren<ElementRef>('h');   // Signal<ReadonlyArray<ElementRef>>\n * }\n * ```\n *\n * @initializerApiFunction\n * @developerPreview\n */\nexport function contentChildren<LocatorT, ReadT>(\n  locator: ProviderToken<LocatorT> | string,\n  opts?: {descendants?: boolean; read?: ProviderToken<ReadT>},\n): Signal<ReadonlyArray<ReadT>> {\n  return createMultiResultQuerySignalFn<ReadT>();\n}\n"]}