/
event-dispatcher-test.js
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/
event-dispatcher-test.js
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import { moduleFor, RenderingTestCase, runTask } from 'internal-test-helpers';
import { Component } from '../utils/helpers';
import { _getCurrentRunLoop } from '@ember/runloop';
import {
reset as instrumentationReset,
subscribe as instrumentationSubscribe,
} from '@ember/instrumentation';
import { EMBER_IMPROVED_INSTRUMENTATION } from '@ember/canary-features';
let canDataTransfer = Boolean(document.createEvent('HTMLEvents').dataTransfer);
function fireNativeWithDataTransfer(node, type, dataTransfer) {
let event = document.createEvent('HTMLEvents');
event.initEvent(type, true, true);
event.dataTransfer = dataTransfer;
node.dispatchEvent(event);
}
function triggerEvent(node, event) {
switch (event) {
case 'focusin':
return node.focus();
case 'focusout':
return node.blur();
default:
return node.trigger(event);
}
}
const SUPPORTED_EMBER_EVENTS = {
touchstart: 'touchStart',
touchmove: 'touchMove',
touchend: 'touchEnd',
touchcancel: 'touchCancel',
keydown: 'keyDown',
keyup: 'keyUp',
keypress: 'keyPress',
mousedown: 'mouseDown',
mouseup: 'mouseUp',
contextmenu: 'contextMenu',
click: 'click',
dblclick: 'doubleClick',
focusin: 'focusIn',
focusout: 'focusOut',
submit: 'submit',
input: 'input',
change: 'change',
dragstart: 'dragStart',
drag: 'drag',
dragenter: 'dragEnter',
dragleave: 'dragLeave',
dragover: 'dragOver',
drop: 'drop',
dragend: 'dragEnd',
};
moduleFor(
'EventDispatcher',
class extends RenderingTestCase {
['@test event handler methods are called when event is triggered'](assert) {
let receivedEvent;
let browserEvent;
this.registerComponent('x-button', {
ComponentClass: Component.extend(
{
tagName: 'button',
},
Object.keys(SUPPORTED_EMBER_EVENTS)
.map((browerEvent) => ({
[SUPPORTED_EMBER_EVENTS[browerEvent]](event) {
receivedEvent = event;
},
}))
.reduce((result, singleEventHandler) => ({ ...result, ...singleEventHandler }), {})
),
});
this.render(`{{x-button}}`);
let elementNode = this.$('button');
let element = elementNode[0];
for (browserEvent in SUPPORTED_EMBER_EVENTS) {
receivedEvent = null;
runTask(() => triggerEvent(elementNode, browserEvent));
assert.ok(receivedEvent, `${browserEvent} event was triggered`);
assert.strictEqual(receivedEvent.target, element);
}
}
['@test event listeners are called when event is triggered'](assert) {
let receivedEvent;
let browserEvent;
this.registerComponent('x-button', {
ComponentClass: Component.extend({
tagName: 'button',
init() {
this._super();
Object.keys(SUPPORTED_EMBER_EVENTS).forEach((browserEvent) => {
this.on(SUPPORTED_EMBER_EVENTS[browserEvent], (event) => (receivedEvent = event));
});
},
}),
});
this.render(`{{x-button}}`);
let elementNode = this.$('button');
let element = elementNode[0];
for (browserEvent in SUPPORTED_EMBER_EVENTS) {
receivedEvent = null;
runTask(() => triggerEvent(elementNode, browserEvent));
assert.ok(receivedEvent, `${browserEvent} event was triggered`);
assert.strictEqual(receivedEvent.target, element);
}
}
['@test events bubble view hierarchy for form elements'](assert) {
let receivedEvent;
this.registerComponent('x-foo', {
ComponentClass: Component.extend({
change(event) {
receivedEvent = event;
},
}),
template: `<input id="is-done" type="checkbox">`,
});
this.render(`{{x-foo}}`);
runTask(() => this.$('#is-done').trigger('change'));
assert.ok(receivedEvent, 'change event was triggered');
assert.strictEqual(receivedEvent.target, this.$('#is-done')[0]);
}
['@test case insensitive events'](assert) {
let receivedEvent;
this.registerComponent('x-bar', {
ComponentClass: Component.extend({
clicked(event) {
receivedEvent = event;
},
}),
template: `<button id="is-done" onclick={{action this.clicked}}>my button</button>`,
});
this.render(`{{x-bar}}`);
runTask(() => this.$('#is-done').trigger('click'));
assert.ok(receivedEvent, 'change event was triggered');
assert.strictEqual(receivedEvent.target, this.$('#is-done')[0]);
}
['@test case sensitive events'](assert) {
let receivedEvent;
this.registerComponent('x-bar', {
ComponentClass: Component.extend({
clicked(event) {
receivedEvent = event;
},
}),
template: `<button id="is-done" onClick={{action this.clicked}}>my button</button>`,
});
this.render(`{{x-bar}}`);
runTask(() => this.$('#is-done').trigger('click'));
assert.ok(receivedEvent, 'change event was triggered');
assert.strictEqual(receivedEvent.target, this.$('#is-done')[0]);
}
['@test events bubble to parent view'](assert) {
let receivedEvent;
this.registerComponent('x-foo', {
ComponentClass: Component.extend({
change(event) {
receivedEvent = event;
},
}),
template: `{{yield}}`,
});
this.registerComponent('x-bar', {
ComponentClass: Component.extend({
change() {},
}),
template: `<input id="is-done" type="checkbox">`,
});
this.render(`{{#x-foo}}{{x-bar}}{{/x-foo}}`);
runTask(() => this.$('#is-done').trigger('change'));
assert.ok(receivedEvent, 'change event was triggered');
assert.strictEqual(receivedEvent.target, this.$('#is-done')[0]);
}
['@test events bubbling up can be prevented by returning false'](assert) {
let hasReceivedEvent;
this.registerComponent('x-foo', {
ComponentClass: Component.extend({
change() {
hasReceivedEvent = true;
},
}),
template: `{{yield}}`,
});
this.registerComponent('x-bar', {
ComponentClass: Component.extend({
change() {
return false;
},
}),
template: `<input id="is-done" type="checkbox">`,
});
this.render(`{{#x-foo}}{{x-bar}}{{/x-foo}}`);
runTask(() => this.$('#is-done').trigger('change'));
assert.notOk(hasReceivedEvent, 'change event has not been received');
}
['@test events bubbling up can be prevented by calling stopPropagation()'](assert) {
let hasReceivedEvent;
this.registerComponent('x-foo', {
ComponentClass: Component.extend({
change() {
hasReceivedEvent = true;
},
}),
template: `{{yield}}`,
});
this.registerComponent('x-bar', {
ComponentClass: Component.extend({
change(e) {
e.stopPropagation();
},
}),
template: `<input id="is-done" type="checkbox">`,
});
this.render(`{{#x-foo}}{{x-bar}}{{/x-foo}}`);
runTask(() => this.$('#is-done').trigger('change'));
assert.notOk(hasReceivedEvent, 'change event has not been received');
}
['@test event handlers are wrapped in a run loop'](assert) {
this.registerComponent('x-foo', {
ComponentClass: Component.extend({
change() {
assert.ok(_getCurrentRunLoop(), 'a run loop should have started');
},
}),
template: `<input id="is-done" type="checkbox">`,
});
this.render(`{{x-foo}}`);
this.$('#is-done').trigger('click');
}
}
);
moduleFor(
'EventDispatcher#setup',
class extends RenderingTestCase {
constructor() {
super(...arguments);
this.dispatcher = this.owner.lookup('event_dispatcher:main');
}
getBootOptions() {
return {
skipEventDispatcher: true,
};
}
['@test additional events can be specified'](assert) {
this.dispatcher.setup({ myevent: 'myEvent' });
this.registerComponent('x-foo', {
ComponentClass: Component.extend({
myEvent() {
assert.ok(true, 'custom event was triggered');
},
}),
template: `<p>Hello!</p>`,
});
this.render(`{{x-foo}}`);
this.$('div').trigger('myevent');
}
['@test a rootElement can be specified'](assert) {
this.element.innerHTML = '<div id="app"></div>';
// this.$().append('<div id="app"></div>');
this.dispatcher.setup({ myevent: 'myEvent' }, '#app');
assert.ok(this.$('#app').hasClass('ember-application'), 'custom rootElement was used');
assert.equal(this.dispatcher.rootElement, '#app', 'the dispatchers rootElement was updated');
}
['@test default events can be disabled via `customEvents`'](assert) {
this.dispatcher.setup({ click: null });
this.registerComponent('x-foo', {
ComponentClass: Component.extend({
click() {
assert.ok(false, 'click method was called');
},
null() {
assert.ok(false, 'null method was called');
},
doubleClick() {
assert.ok(true, 'a non-disabled event is still handled properly');
},
}),
template: `<p>Hello!</p>`,
});
this.render(`{{x-foo}}`);
this.$('div').trigger('click');
this.$('div').trigger('dblclick');
}
['@test throws if specified rootElement does not exist'](assert) {
assert.throws(() => {
this.dispatcher.setup({ myevent: 'myEvent' }, '#app');
});
}
}
);
if (EMBER_IMPROVED_INSTRUMENTATION) {
moduleFor(
'EventDispatcher - Instrumentation',
class extends RenderingTestCase {
teardown() {
super.teardown();
instrumentationReset();
}
['@test instruments triggered events'](assert) {
let clicked = 0;
this.registerComponent('x-foo', {
ComponentClass: Component.extend({
click() {
clicked++;
},
}),
template: `<p>hello</p>`,
});
this.render(`{{x-foo}}`);
this.$('div').trigger('click');
assert.equal(clicked, 1, 'precond - the click handler was invoked');
let clickInstrumented = 0;
instrumentationSubscribe('interaction.click', {
before() {
clickInstrumented++;
assert.equal(clicked, 1, 'invoked before event is handled');
},
after() {
clickInstrumented++;
assert.equal(clicked, 2, 'invoked after event is handled');
},
});
let keypressInstrumented = 0;
instrumentationSubscribe('interaction.keypress', {
before() {
keypressInstrumented++;
},
after() {
keypressInstrumented++;
},
});
this.$('div').trigger('click');
this.$('div').trigger('change');
assert.equal(clicked, 2, 'precond - The click handler was invoked');
assert.equal(clickInstrumented, 2, 'The click was instrumented');
assert.strictEqual(keypressInstrumented, 0, 'The keypress was not instrumented');
}
}
);
}
if (canDataTransfer) {
moduleFor(
'EventDispatcher - Event Properties',
class extends RenderingTestCase {
['@test dataTransfer property is added to drop event'](assert) {
let receivedEvent;
this.registerComponent('x-foo', {
ComponentClass: Component.extend({
drop(event) {
receivedEvent = event;
},
}),
});
this.render(`{{x-foo}}`);
fireNativeWithDataTransfer(this.$('div')[0], 'drop', 'success');
assert.equal(receivedEvent.dataTransfer, 'success');
}
}
);
}