本文整理汇总了TypeScript中@angular/core/src/view/index.checkAndUpdateView函数的典型用法代码示例。如果您正苦于以下问题：TypeScript checkAndUpdateView函数的具体用法？TypeScript checkAndUpdateView怎么用？TypeScript checkAndUpdateView使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了checkAndUpdateView函数的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: it
it('should support detaching and attaching component views for dirty checking', () => {
class AComp {
a: any;
}
const update = jasmine.createSpy('updater');
const {view, rootNodes} = createAndGetRootNodes(compViewDef([
elementDef(NodeFlags.None, null, null, 1, 'div'),
directiveDef(
NodeFlags.None, null, 0, AComp, [], null, null,
() => compViewDef(
[
elementDef(NodeFlags.None, null, null, 0, 'span'),
],
update)),
]));
const compView = asProviderData(view, 1).componentView;
checkAndUpdateView(view);
update.calls.reset();
compView.state = ViewState.ChecksDisabled;
checkAndUpdateView(view);
expect(update).not.toHaveBeenCalled();
compView.state = ViewState.ChecksEnabled;
checkAndUpdateView(view);
expect(update).toHaveBeenCalled();
});示例2: it
it(`should unwrap values with ${InlineDynamic[inlineDynamic]}`, () => {
let bindingValue: any;
const setterSpy = jasmine.createSpy('set');
class FakeTextNode {
set nodeValue(value: any) { setterSpy(value); }
}
spyOn(document, 'createTextNode').and.returnValue(new FakeTextNode());
const {view, rootNodes} = createAndGetRootNodes(compViewDef(
[
textDef(null, ['', '']),
],
(view: ViewData) => {
setCurrentNode(view, 0);
checkNodeInlineOrDynamic(inlineDynamic, [bindingValue]);
}));
Object.defineProperty(rootNodes[0], 'nodeValue', {set: setterSpy});
bindingValue = 'v1';
checkAndUpdateView(view);
expect(setterSpy).toHaveBeenCalledWith('v1');
setterSpy.calls.reset();
checkAndUpdateView(view);
expect(setterSpy).not.toHaveBeenCalled();
setterSpy.calls.reset();
bindingValue = WrappedValue.wrap('v1');
checkAndUpdateView(view);
expect(setterSpy).toHaveBeenCalledWith('v1');
});示例3: it
it('should call ngOnChanges with the changed values and the non minified names', () => {
let changesLog: SimpleChange[] = [];
let currValue = 'v1';
class SomeService implements OnChanges {
a: any;
ngOnChanges(changes: {[name: string]: SimpleChange}) {
changesLog.push(changes['nonMinifiedA']);
}
}
const {view, rootNodes} = createAndGetRootNodes(compViewDef(
[
elementDef(NodeFlags.None, 1, 'span'),
providerDef(NodeFlags.OnChanges, SomeService, [], {a: [0, 'nonMinifiedA']})
],
(updater) => updater.checkInline(view, 1, currValue)));
checkAndUpdateView(view);
expect(changesLog).toEqual([new SimpleChange(undefined, 'v1', true)]);
currValue = 'v2';
changesLog = [];
checkAndUpdateView(view);
expect(changesLog).toEqual([new SimpleChange('v1', 'v2', false)]);
});示例4: it
it(`should update ${config.name}`, () => {
const {view, rootNodes} = createAndGetRootNodes(compViewDef(
[
textDef(['0', '1', '2']),
],
config.updater));
checkAndUpdateView(view);
const node = rootNodes[0];
expect(getDOM().getText(rootNodes[0])).toBe('0a1b2');
});示例5: it
it(`should update ${config.name}`, () => {
const {view, rootNodes} = createAndGetRootNodes(compViewDef(
[
elementDef(
NodeFlags.None, 0, 'div', null,
[[BindingType.ElementClass, 'c1'], [BindingType.ElementClass, 'c2']]),
],
config.updater));
checkAndUpdateView(view);
const el = rootNodes[0];
expect(getDOM().hasClass(el, 'c1')).toBeTruthy();
expect(getDOM().hasClass(el, 'c2')).toBeTruthy();
});示例6: it
it('should dirty check embedded views', () => {
let childValue = 'v1';
const parentContext = new Object();
const childContext = new Object();
const updater = jasmine.createSpy('updater').and.callFake(
(updater: NodeUpdater, view: ViewData) => updater.checkInline(view, 0, childValue));
const {view: parentView, rootNodes} = createAndGetRootNodes(
compViewDef([
elementDef(NodeFlags.None, 1, 'div'),
anchorDef(
NodeFlags.HasEmbeddedViews, 0,
embeddedViewDef(
[elementDef(
NodeFlags.None, 0, 'span', null,
[[BindingType.ElementAttribute, 'name', SecurityContext.NONE]])],
updater))
]),
parentContext);
const childView0 = createEmbeddedView(parentView, parentView.def.nodes[1], childContext);
const rootEl = rootNodes[0];
attachEmbeddedView(parentView.nodes[1], 0, childView0);
checkAndUpdateView(parentView);
expect(updater).toHaveBeenCalled();
// component
expect(updater.calls.mostRecent().args[2]).toBe(parentContext);
// view context
expect(updater.calls.mostRecent().args[3]).toBe(childContext);
updater.calls.reset();
checkNoChangesView(parentView);
expect(updater).toHaveBeenCalled();
// component
expect(updater.calls.mostRecent().args[2]).toBe(parentContext);
// view context
expect(updater.calls.mostRecent().args[3]).toBe(childContext);
childValue = 'v2';
expect(() => checkNoChangesView(parentView))
.toThrowError(
`Expression has changed after it was checked. Previous value: 'v1'. Current value: 'v2'.`);
});