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feat: support passive event options by defining global variables in zone.js config file (#34503)

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PR Close #34503
This commit is contained in:
JiaLiPassion
2019-12-20 07:50:09 +09:00
committed by Miško Hevery
parent 8cb1f65e7d
commit d7d359e3ee
5 changed files with 97 additions and 9 deletions
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38
packages/zone.js/test/browser/browser.spec.ts
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@ -222,6 +222,7 @@ describe('Zone', function() {
});
zone.run(() => { document.dispatchEvent(scrollEvent); });
(document as any).removeAllListeners('scroll');
});
it('should be able to clear on handler added before load zone.js', function() {
@ -799,6 +800,7 @@ describe('Zone', function() {
button.dispatchEvent(clickEvent);
expect(logs).toEqual([]);
(document as any).removeAllListeners('click');
});
}));
@ -1035,6 +1037,42 @@ describe('Zone', function() {
button.removeEventListener('click', listener);
}));
describe('passiveEvents', () => {
let logs: string[] = [];
const listener = (e: Event) => {
logs.push(e.defaultPrevented ? 'defaultPrevented' : 'default will run');
e.preventDefault();
logs.push(e.defaultPrevented ? 'defaultPrevented' : 'default will run');
};
const testPassive = function(eventName: string, expectedPassiveLog: string, options: any) {
(button as any).addEventListener(eventName, listener, options);
const evt = document.createEvent('Event');
evt.initEvent(eventName, true, true);
button.dispatchEvent(evt);
expect(logs).toEqual(['default will run', expectedPassiveLog]);
(button as any).removeAllListeners(eventName);
};
beforeEach(() => { logs = []; });
it('should be passive with global variable defined',
() => { testPassive('touchstart', 'default will run', {passive: true}); });
it('should not be passive without global variable defined',
() => { testPassive('touchend', 'defaultPrevented', undefined); });
it('should be passive with global variable defined even without passive options',
() => { testPassive('touchstart', 'default will run', undefined); });
it('should be passive with global variable defined even without passive options and with capture',
() => { testPassive('touchstart', 'default will run', {capture: true}); });
it('should be passive with global variable defined with capture option',
() => { testPassive('touchstart', 'default will run', true); });
it('should not be passive with global variable defined with passive false option',
() => { testPassive('touchstart', 'defaultPrevented', {passive: false}); });
it('should be passive with global variable defined and also blacklisted', () => {
(document as any).removeAllListeners('scroll');
testPassive('scroll', 'default will run', undefined);
});
it('should not be passive without global variable defined and also blacklisted',
() => { testPassive('wheel', 'defaultPrevented', undefined); });
});
it('should support Event.stopImmediatePropagation',
ifEnvSupports(supportEventListenerOptions, function() {
const hookSpy = jasmine.createSpy('hook');