feat(query): adds support for descendants and more list apis.
Additional clean up of query code. Closes: #1935 BREAKING CHANGE: By default Query only queries direct children.
This commit is contained in:
Rado Kirov
parent
ca09701343
commit
355ab5b3a6
|
|
@ -231,14 +231,13 @@ import {DEFAULT} from 'angular2/change_detection';
|
|||
*
|
||||
* ### Injecting a live collection of descendant directives
|
||||
*
|
||||
* Note: This is will be implemented in later release. ()
|
||||
*
|
||||
* Similar to `@Query` above, but also includes the children of the child elements.
|
||||
* By passing the descendant flag to `@Query` above, we can include the children of the child
|
||||
* elements.
|
||||
*
|
||||
* ```
|
||||
* @Directive({ selector: '[my-directive]' })
|
||||
* class MyDirective {
|
||||
* constructor(@QueryDescendents(Dependency) dependencies:QueryList<Dependency>) {
|
||||
* constructor(@Query(Dependency, {descendants: true}) dependencies:QueryList<Dependency>) {
|
||||
* }
|
||||
* }
|
||||
* ```
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
import {CONST, stringify} from 'angular2/src/facade/lang';
|
||||
import {CONST, stringify, isPresent} from 'angular2/src/facade/lang';
|
||||
import {DependencyAnnotation} from 'angular2/src/di/annotations_impl';
|
||||
import {resolveForwardRef} from 'angular2/di';
|
||||
|
||||
/**
|
||||
* Specifies that a constant attribute value should be injected.
|
||||
|
|
@ -53,6 +54,13 @@ export class Attribute extends DependencyAnnotation {
|
|||
*/
|
||||
@CONST()
|
||||
export class Query extends DependencyAnnotation {
|
||||
constructor(public directive: any) { super(); }
|
||||
descendants: boolean;
|
||||
constructor(private _directive: any, {descendants = false}: {descendants?: boolean} = {}) {
|
||||
super();
|
||||
this.descendants = descendants;
|
||||
}
|
||||
|
||||
get directive() { return resolveForwardRef(this._directive); }
|
||||
|
||||
toString() { return `@Query(${stringify(this.directive)})`; }
|
||||
}
|
||||
|
|
|
|||
|
|
@ -46,4 +46,8 @@ class BaseQueryList<T> extends Object with IterableMixin<T> {
|
|||
removeCallback(callback) {
|
||||
this._callbacks.remove(callback);
|
||||
}
|
||||
|
||||
get length => this._results.length;
|
||||
get first => this._results.first;
|
||||
get last => this._results.last;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
import {List, MapWrapper, ListWrapper} from 'angular2/src/facade/collection';
|
||||
import {List, ListWrapper, MapWrapper} from 'angular2/src/facade/collection';
|
||||
|
||||
/**
|
||||
* Injectable Objects that contains a live list of child directives in the light Dom of a directive.
|
||||
|
|
@ -10,9 +10,9 @@ import {List, MapWrapper, ListWrapper} from 'angular2/src/facade/collection';
|
|||
* @exportedAs angular2/view
|
||||
*/
|
||||
export class BaseQueryList<T> {
|
||||
_results: List<T>;
|
||||
_callbacks;
|
||||
_dirty;
|
||||
protected _results: List<T>;
|
||||
protected _callbacks;
|
||||
protected _dirty;
|
||||
|
||||
constructor() {
|
||||
this._results = [];
|
||||
|
|
@ -43,4 +43,10 @@ export class BaseQueryList<T> {
|
|||
onChange(callback) { ListWrapper.push(this._callbacks, callback); }
|
||||
|
||||
removeCallback(callback) { ListWrapper.remove(this._callbacks, callback); }
|
||||
|
||||
get length() { return this._results.length; }
|
||||
|
||||
get first() { return ListWrapper.first(this._results); }
|
||||
|
||||
get last() { return ListWrapper.last(this._results); }
|
||||
}
|
||||
|
|
|
|||
|
|
@ -82,35 +82,6 @@ export class TreeNode<T extends TreeNode<any>> {
|
|||
if (isPresent(parent)) parent.addChild(this);
|
||||
}
|
||||
|
||||
_assertConsistency(): void {
|
||||
this._assertHeadBeforeTail();
|
||||
this._assertTailReachable();
|
||||
this._assertPresentInParentList();
|
||||
}
|
||||
|
||||
_assertHeadBeforeTail(): void {
|
||||
if (isBlank(this._tail) && isPresent(this._head))
|
||||
throw new BaseException('null tail but non-null head');
|
||||
}
|
||||
|
||||
_assertTailReachable(): void {
|
||||
if (isBlank(this._tail)) return;
|
||||
if (isPresent(this._tail._next)) throw new BaseException('node after tail');
|
||||
var p = this._head;
|
||||
while (isPresent(p) && p != this._tail) p = p._next;
|
||||
if (isBlank(p) && isPresent(this._tail)) throw new BaseException('tail not reachable.')
|
||||
}
|
||||
|
||||
_assertPresentInParentList(): void {
|
||||
var p = this._parent;
|
||||
if (isBlank(p)) {
|
||||
return;
|
||||
}
|
||||
var cur = p._head;
|
||||
while (isPresent(cur) && cur != this) cur = cur._next;
|
||||
if (isBlank(cur)) throw new BaseException('node not reachable through parent.')
|
||||
}
|
||||
|
||||
/**
|
||||
* Adds a child to the parent node. The child MUST NOT be a part of a tree.
|
||||
*/
|
||||
|
|
@ -123,7 +94,6 @@ export class TreeNode<T extends TreeNode<any>> {
|
|||
}
|
||||
child._next = null;
|
||||
child._parent = this;
|
||||
this._assertConsistency();
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -131,7 +101,6 @@ export class TreeNode<T extends TreeNode<any>> {
|
|||
* The child MUST NOT be a part of a tree and the sibling must be present.
|
||||
*/
|
||||
addChildAfter(child: T, prevSibling: T): void {
|
||||
this._assertConsistency();
|
||||
if (isBlank(prevSibling)) {
|
||||
var prevHead = this._head;
|
||||
this._head = child;
|
||||
|
|
@ -141,19 +110,16 @@ export class TreeNode<T extends TreeNode<any>> {
|
|||
this.addChild(child);
|
||||
return;
|
||||
} else {
|
||||
prevSibling._assertPresentInParentList();
|
||||
child._next = prevSibling._next;
|
||||
prevSibling._next = child;
|
||||
}
|
||||
child._parent = this;
|
||||
this._assertConsistency();
|
||||
}
|
||||
|
||||
/**
|
||||
* Detaches a node from the parent's tree.
|
||||
*/
|
||||
remove(): void {
|
||||
this._assertConsistency();
|
||||
if (isBlank(this.parent)) return;
|
||||
var nextSibling = this._next;
|
||||
var prevSibling = this._findPrev();
|
||||
|
|
@ -165,10 +131,8 @@ export class TreeNode<T extends TreeNode<any>> {
|
|||
if (isBlank(nextSibling)) {
|
||||
this._parent._tail = prevSibling;
|
||||
}
|
||||
this._parent._assertConsistency();
|
||||
this._parent = null;
|
||||
this._next = null;
|
||||
this._assertConsistency();
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -217,14 +181,14 @@ export class DependencyWithVisibility extends Dependency {
|
|||
|
||||
export class DirectiveDependency extends DependencyWithVisibility {
|
||||
constructor(key: Key, asPromise: boolean, lazy: boolean, optional: boolean, properties: List<any>,
|
||||
visibility: Visibility, public attributeName: string, public queryDirective) {
|
||||
visibility: Visibility, public attributeName: string, public queryDecorator: Query) {
|
||||
super(key, asPromise, lazy, optional, properties, visibility);
|
||||
this._verify();
|
||||
}
|
||||
|
||||
_verify(): void {
|
||||
var count = 0;
|
||||
if (isPresent(this.queryDirective)) count++;
|
||||
if (isPresent(this.queryDecorator)) count++;
|
||||
if (isPresent(this.attributeName)) count++;
|
||||
if (count > 1)
|
||||
throw new BaseException(
|
||||
|
|
@ -243,10 +207,7 @@ export class DirectiveDependency extends DependencyWithVisibility {
|
|||
return isPresent(p) ? p.attributeName : null;
|
||||
}
|
||||
|
||||
static _query(properties) {
|
||||
var p = ListWrapper.find(properties, (p) => p instanceof Query);
|
||||
return isPresent(p) ? resolveForwardRef(p.directive) : null;
|
||||
}
|
||||
static _query(properties) { return ListWrapper.find(properties, (p) => p instanceof Query); }
|
||||
}
|
||||
|
||||
export class DirectiveBinding extends ResolvedBinding {
|
||||
|
|
@ -706,6 +667,8 @@ export class ElementInjector extends TreeNode<ElementInjector> {
|
|||
private _query1: QueryRef;
|
||||
private _query2: QueryRef;
|
||||
|
||||
hydrated: boolean;
|
||||
|
||||
_strategy: _ElementInjectorStrategy;
|
||||
|
||||
constructor(public _proto: ProtoElementInjector, parent: ElementInjector) {
|
||||
|
|
@ -713,12 +676,14 @@ export class ElementInjector extends TreeNode<ElementInjector> {
|
|||
this._strategy = _proto._strategy.createElementInjectorStrategy(this);
|
||||
|
||||
this._constructionCounter = 0;
|
||||
this.hydrated = false;
|
||||
|
||||
this._inheritQueries(parent);
|
||||
this._buildQueries();
|
||||
this._addParentQueries();
|
||||
}
|
||||
|
||||
dehydrate(): void {
|
||||
this.hydrated = false;
|
||||
this._host = null;
|
||||
this._preBuiltObjects = null;
|
||||
this._lightDomAppInjector = null;
|
||||
|
|
@ -755,6 +720,7 @@ export class ElementInjector extends TreeNode<ElementInjector> {
|
|||
this._checkShadowDomAppInjector(this._shadowDomAppInjector);
|
||||
|
||||
this._strategy.hydrate();
|
||||
this.hydrated = true;
|
||||
}
|
||||
|
||||
private _createShadowDomAppInjector(componentDirective: DirectiveBinding,
|
||||
|
|
@ -906,7 +872,7 @@ export class ElementInjector extends TreeNode<ElementInjector> {
|
|||
var dirDep = <DirectiveDependency>dep;
|
||||
|
||||
if (isPresent(dirDep.attributeName)) return this._buildAttribute(dirDep);
|
||||
if (isPresent(dirDep.queryDirective)) return this._findQuery(dirDep.queryDirective).list;
|
||||
if (isPresent(dirDep.queryDecorator)) return this._findQuery(dirDep.queryDecorator).list;
|
||||
if (dirDep.key.id === StaticKeys.instance().changeDetectorRefId) {
|
||||
var componentView = this._preBuiltObjects.view.componentChildViews[this._proto.index];
|
||||
return componentView.changeDetector.ref;
|
||||
|
|
@ -942,67 +908,57 @@ export class ElementInjector extends TreeNode<ElementInjector> {
|
|||
_buildQueriesForDeps(deps: List<DirectiveDependency>): void {
|
||||
for (var i = 0; i < deps.length; i++) {
|
||||
var dep = deps[i];
|
||||
if (isPresent(dep.queryDirective)) {
|
||||
this._createQueryRef(dep.queryDirective);
|
||||
if (isPresent(dep.queryDecorator)) {
|
||||
this._createQueryRef(dep.queryDecorator);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private _createQueryRef(directive): void {
|
||||
private _createQueryRef(query: Query): void {
|
||||
var queryList = new QueryList<any>();
|
||||
if (isBlank(this._query0)) {
|
||||
this._query0 = new QueryRef(directive, queryList, this);
|
||||
this._query0 = new QueryRef(query, queryList, this);
|
||||
} else if (isBlank(this._query1)) {
|
||||
this._query1 = new QueryRef(directive, queryList, this);
|
||||
this._query1 = new QueryRef(query, queryList, this);
|
||||
} else if (isBlank(this._query2)) {
|
||||
this._query2 = new QueryRef(directive, queryList, this);
|
||||
this._query2 = new QueryRef(query, queryList, this);
|
||||
} else
|
||||
throw new QueryError();
|
||||
}
|
||||
|
||||
private _addToQueries(obj, token): void {
|
||||
if (isPresent(this._query0) && (this._query0.directive === token)) {
|
||||
if (isPresent(this._query0) && (this._query0.query.directive === token)) {
|
||||
this._query0.list.add(obj);
|
||||
}
|
||||
if (isPresent(this._query1) && (this._query1.directive === token)) {
|
||||
if (isPresent(this._query1) && (this._query1.query.directive === token)) {
|
||||
this._query1.list.add(obj);
|
||||
}
|
||||
if (isPresent(this._query2) && (this._query2.directive === token)) {
|
||||
if (isPresent(this._query2) && (this._query2.query.directive === token)) {
|
||||
this._query2.list.add(obj);
|
||||
}
|
||||
}
|
||||
|
||||
// TODO(rado): unify with _addParentQueries.
|
||||
private _inheritQueries(parent: ElementInjector): void {
|
||||
if (isBlank(parent)) return;
|
||||
if (isPresent(parent._query0)) {
|
||||
this._query0 = parent._query0;
|
||||
}
|
||||
if (isPresent(parent._query1)) {
|
||||
this._query1 = parent._query1;
|
||||
}
|
||||
if (isPresent(parent._query2)) {
|
||||
this._query2 = parent._query2;
|
||||
}
|
||||
}
|
||||
|
||||
private _buildQueries(): void {
|
||||
if (isPresent(this._proto)) {
|
||||
this._strategy.buildQueries();
|
||||
}
|
||||
}
|
||||
|
||||
private _findQuery(token): QueryRef {
|
||||
if (isPresent(this._query0) && this._query0.directive === token) {
|
||||
private _findQuery(query): QueryRef {
|
||||
if (isPresent(this._query0) && this._query0.query === query) {
|
||||
return this._query0;
|
||||
}
|
||||
if (isPresent(this._query1) && this._query1.directive === token) {
|
||||
if (isPresent(this._query1) && this._query1.query === query) {
|
||||
return this._query1;
|
||||
}
|
||||
if (isPresent(this._query2) && this._query2.directive === token) {
|
||||
if (isPresent(this._query2) && this._query2.query === query) {
|
||||
return this._query2;
|
||||
}
|
||||
throw new BaseException(`Cannot find query for directive ${token}.`);
|
||||
throw new BaseException(`Cannot find query for directive ${query}.`);
|
||||
}
|
||||
|
||||
_hasQuery(query: QueryRef): boolean {
|
||||
return this._query0 == query || this._query1 == query || this._query2 == query;
|
||||
}
|
||||
|
||||
link(parent: ElementInjector): void {
|
||||
|
|
@ -1016,38 +972,39 @@ export class ElementInjector extends TreeNode<ElementInjector> {
|
|||
}
|
||||
|
||||
private _addParentQueries(): void {
|
||||
if (isBlank(this.parent)) return;
|
||||
if (isPresent(this.parent._query0)) {
|
||||
this._addQueryToTree(this.parent._query0);
|
||||
this.parent._query0.update();
|
||||
if (this.hydrated) this.parent._query0.update();
|
||||
}
|
||||
if (isPresent(this.parent._query1)) {
|
||||
this._addQueryToTree(this.parent._query1);
|
||||
this.parent._query1.update();
|
||||
if (this.hydrated) this.parent._query1.update();
|
||||
}
|
||||
if (isPresent(this.parent._query2)) {
|
||||
this._addQueryToTree(this.parent._query2);
|
||||
this.parent._query2.update();
|
||||
if (this.hydrated) this.parent._query2.update();
|
||||
}
|
||||
}
|
||||
|
||||
unlink(): void {
|
||||
var queriesToUpDate = [];
|
||||
var queriesToUpdate = [];
|
||||
if (isPresent(this.parent._query0)) {
|
||||
this._pruneQueryFromTree(this.parent._query0);
|
||||
ListWrapper.push(queriesToUpDate, this.parent._query0);
|
||||
ListWrapper.push(queriesToUpdate, this.parent._query0);
|
||||
}
|
||||
if (isPresent(this.parent._query1)) {
|
||||
this._pruneQueryFromTree(this.parent._query1);
|
||||
ListWrapper.push(queriesToUpDate, this.parent._query1);
|
||||
ListWrapper.push(queriesToUpdate, this.parent._query1);
|
||||
}
|
||||
if (isPresent(this.parent._query2)) {
|
||||
this._pruneQueryFromTree(this.parent._query2);
|
||||
ListWrapper.push(queriesToUpDate, this.parent._query2);
|
||||
ListWrapper.push(queriesToUpdate, this.parent._query2);
|
||||
}
|
||||
|
||||
this.remove();
|
||||
|
||||
ListWrapper.forEach(queriesToUpDate, (q) => q.update());
|
||||
ListWrapper.forEach(queriesToUpdate, (q) => q.update());
|
||||
}
|
||||
|
||||
private _pruneQueryFromTree(query: QueryRef): void {
|
||||
|
|
@ -1060,12 +1017,24 @@ export class ElementInjector extends TreeNode<ElementInjector> {
|
|||
}
|
||||
}
|
||||
|
||||
private _addQueryToTree(query: QueryRef): void {
|
||||
this._assignQueryRef(query);
|
||||
private _addQueryToTree(queryRef: QueryRef): void {
|
||||
if (queryRef.query.descendants == false) {
|
||||
if (this == queryRef.originator) {
|
||||
this._addQueryToTreeSelfAndRecurse(queryRef);
|
||||
} else if (this.parent == queryRef.originator && this._proto.distanceToParent == 1) {
|
||||
this._assignQueryRef(queryRef);
|
||||
}
|
||||
} else {
|
||||
this._addQueryToTreeSelfAndRecurse(queryRef);
|
||||
}
|
||||
}
|
||||
|
||||
private _addQueryToTreeSelfAndRecurse(queryRef: QueryRef): void {
|
||||
this._assignQueryRef(queryRef);
|
||||
|
||||
var child = this._head;
|
||||
while (isPresent(child)) {
|
||||
child._addQueryToTree(query);
|
||||
child._addQueryToTree(queryRef);
|
||||
child = child._next;
|
||||
}
|
||||
}
|
||||
|
|
@ -1507,15 +1476,8 @@ class QueryError extends BaseException {
|
|||
}
|
||||
|
||||
class QueryRef {
|
||||
directive;
|
||||
list: QueryList<any>;
|
||||
originator: ElementInjector;
|
||||
|
||||
constructor(directive, list: QueryList<any>, originator: ElementInjector) {
|
||||
this.directive = directive;
|
||||
this.list = list;
|
||||
this.originator = originator;
|
||||
}
|
||||
constructor(public query: Query, public list: QueryList<any>,
|
||||
public originator: ElementInjector) {}
|
||||
|
||||
update(): void {
|
||||
var aggregator = [];
|
||||
|
|
@ -1524,9 +1486,9 @@ class QueryRef {
|
|||
}
|
||||
|
||||
visit(inj: ElementInjector, aggregator): void {
|
||||
if (isBlank(inj)) return;
|
||||
if (inj.hasDirective(this.directive)) {
|
||||
ListWrapper.push(aggregator, inj.get(this.directive));
|
||||
if (isBlank(inj) || !inj._hasQuery(this)) return;
|
||||
if (inj.hasDirective(this.query.directive)) {
|
||||
ListWrapper.push(aggregator, inj.get(this.query.directive));
|
||||
}
|
||||
var child = inj._head;
|
||||
while (isPresent(child)) {
|
||||
|
|
|
|||
|
|
@ -35,9 +35,9 @@ import {BaseQueryList} from './base_query_list';
|
|||
* with `<tabs>`
|
||||
* component's on `hydrate` and deregister on `dehydrate` event. While a reasonable approach, this
|
||||
* would only work
|
||||
* partialy since `*ng-for` could rearange the list of `<pane>` components which would not be
|
||||
* partialy since `*ng-for` could rearrange the list of `<pane>` components which would not be
|
||||
* reported to `<tabs>`
|
||||
* component and thus the list of `<pane>` componets would be out of sync with respect to the list
|
||||
* component and thus the list of `<pane>` components would be out of sync with respect to the list
|
||||
* of `<pane>` elements.
|
||||
*
|
||||
* A preferred solution is to inject a `QueryList` which is a live list of directives in the
|
||||
|
|
|
|||
|
|
@ -13,7 +13,7 @@ import {
|
|||
|
||||
import {TestBed} from 'angular2/src/test_lib/test_bed';
|
||||
|
||||
import {Injectable} from 'angular2/di';
|
||||
import {Injectable, Optional} from 'angular2/di';
|
||||
import {QueryList} from 'angular2/core';
|
||||
import {Query, Component, Directive, View} from 'angular2/annotations';
|
||||
|
||||
|
|
@ -25,6 +25,40 @@ export function main() {
|
|||
BrowserDomAdapter.makeCurrent();
|
||||
describe('Query API', () => {
|
||||
|
||||
it('should contain all direct child directives in the light dom',
|
||||
inject([TestBed, AsyncTestCompleter], (tb, async) => {
|
||||
var template = '<div text="1"></div>' +
|
||||
'<needs-query text="2"><div text="3">' +
|
||||
'<div text="too-deep"></div>' +
|
||||
'</div></needs-query>' +
|
||||
'<div text="4"></div>';
|
||||
|
||||
tb.createView(MyComp, {html: template})
|
||||
.then((view) => {
|
||||
view.detectChanges();
|
||||
expect(view.rootNodes).toHaveText('2|3|');
|
||||
|
||||
async.done();
|
||||
});
|
||||
}));
|
||||
|
||||
it('should contain all directives in the light dom when descendants flag is used',
|
||||
inject([TestBed, AsyncTestCompleter], (tb, async) => {
|
||||
var template = '<div text="1"></div>' +
|
||||
'<needs-query-desc text="2"><div text="3">' +
|
||||
'<div text="4"></div>' +
|
||||
'</div></needs-query-desc>' +
|
||||
'<div text="5"></div>';
|
||||
|
||||
tb.createView(MyComp, {html: template})
|
||||
.then((view) => {
|
||||
view.detectChanges();
|
||||
expect(view.rootNodes).toHaveText('2|3|4|');
|
||||
|
||||
async.done();
|
||||
});
|
||||
}));
|
||||
|
||||
it('should contain all directives in the light dom',
|
||||
inject([TestBed, AsyncTestCompleter], (tb, async) => {
|
||||
var template = '<div text="1"></div>' +
|
||||
|
|
@ -40,11 +74,14 @@ export function main() {
|
|||
});
|
||||
}));
|
||||
|
||||
// TODO(rado): The test below should be using descendants: false,
|
||||
// but due to a bug with how injectors are hooked up query considers the
|
||||
// directives to be distances 2 instead of direct children.
|
||||
it('should reflect dynamically inserted directives',
|
||||
inject([TestBed, AsyncTestCompleter], (tb, async) => {
|
||||
var template =
|
||||
'<div text="1"></div>' +
|
||||
'<needs-query text="2"><div *ng-if="shouldShow" [text]="\'3\'"></div></needs-query>' +
|
||||
'<needs-query-desc text="2"><div *ng-if="shouldShow" [text]="\'3\'"></div></needs-query-desc>' +
|
||||
'<div text="4"></div>';
|
||||
|
||||
tb.createView(MyComp, {html: template})
|
||||
|
|
@ -55,8 +92,6 @@ export function main() {
|
|||
|
||||
view.context.shouldShow = true;
|
||||
view.detectChanges();
|
||||
// TODO(rado): figure out why the second tick is necessary.
|
||||
view.detectChanges();
|
||||
expect(view.rootNodes).toHaveText('2|3|');
|
||||
|
||||
async.done();
|
||||
|
|
@ -66,7 +101,7 @@ export function main() {
|
|||
it('should reflect moved directives', inject([TestBed, AsyncTestCompleter], (tb, async) => {
|
||||
var template =
|
||||
'<div text="1"></div>' +
|
||||
'<needs-query text="2"><div *ng-for="var i of list" [text]="i"></div></needs-query>' +
|
||||
'<needs-query-desc text="2"><div *ng-for="var i of list" [text]="i"></div></needs-query-desc>' +
|
||||
'<div text="4"></div>';
|
||||
|
||||
tb.createView(MyComp, {html: template})
|
||||
|
|
@ -102,10 +137,16 @@ class NeedsQuery {
|
|||
constructor(@Query(TextDirective) query: QueryList<TextDirective>) { this.query = query; }
|
||||
}
|
||||
|
||||
var _constructiontext = 0;
|
||||
@Component({selector: 'needs-query-desc'})
|
||||
@View({directives: [NgFor], template: '<div *ng-for="var dir of query">{{dir.text}}|</div>'})
|
||||
@Injectable()
|
||||
class NeedsQueryDesc {
|
||||
query: QueryList<TextDirective>;
|
||||
constructor(@Query(TextDirective, {descendants: true}) query: QueryList<TextDirective>) { this.query = query; }
|
||||
}
|
||||
|
||||
@Component({selector: 'my-comp'})
|
||||
@View({directives: [NeedsQuery, TextDirective, NgIf, NgFor]})
|
||||
@View({directives: [NeedsQuery, NeedsQueryDesc, TextDirective, NgIf, NgFor]})
|
||||
@Injectable()
|
||||
class MyComp {
|
||||
shouldShow: boolean;
|
||||
|
|
|
|||
|
|
@ -30,6 +30,20 @@ export function main() {
|
|||
expect(log).toEqual('one again, two again');
|
||||
});
|
||||
|
||||
it('should support length', () => {
|
||||
queryList.add('one');
|
||||
queryList.add('two');
|
||||
expect(queryList.length).toEqual(2);
|
||||
});
|
||||
|
||||
it('should support first and last', () => {
|
||||
queryList.add('one');
|
||||
queryList.add('two');
|
||||
queryList.add('three');
|
||||
expect(queryList.first).toEqual('one');
|
||||
expect(queryList.last).toEqual('three');
|
||||
});
|
||||
|
||||
describe('simple observable interface', () => {
|
||||
it('should fire callbacks on change', () => {
|
||||
var fires = 0;
|
||||
|
|
|
|||
Loading…
Reference in New Issue