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10x speed-up of event propagation

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zadam
2022-06-23 23:03:35 +02:00
parent ae46b3df58
commit 42e262a1c2
3 changed files with 25 additions and 9 deletions
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19
src/public/app/widgets/component.js
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@@ -16,7 +16,7 @@ export default class Component {
this.componentId = `comp-` + this.sanitizedClassName + '-' + utils.randomString(8);
/** @type Component[] */
this.children = [];
this.initialized = Promise.resolve();
this.initialized = null;
}
get sanitizedClassName() {
@@ -42,10 +42,16 @@ export default class Component {
/** @returns {Promise} */
handleEvent(name, data) {
return Promise.all([
this.initialized.then(() => this.callMethod(this[name + 'Event'], data)),
this.handleEventInChildren(name, data)
]);
const callMethodPromise = this.initialized
? this.initialized.then(() => this.callMethod(this[name + 'Event'], data))
: this.callMethod(this[name + 'Event'], data);
const childrenPromise = this.handleEventInChildren(name, data);
// don't create promises if not needed (optimization)
return callMethodPromise && childrenPromise
? Promise.all([callMethodPromise, childrenPromise])
: null;
}
/** @returns {Promise} */
@@ -61,7 +67,8 @@ export default class Component {
promises.push(child.handleEvent(name, data));
}
return Promise.all(promises);
// don't create promises if not needed (optimization)
return promises.find(p => p) ? Promise.all(promises) : null;
}
/** @returns {Promise} */