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refactor(events): remove Events feat from core

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This commit is contained in:
Adam Bradley
2018-03-02 14:52:15 -06:00
parent 6da9882c6c
commit 756dc6e306
4 changed files with 94 additions and 97 deletions
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86
packages/core/src/global/events.ts
View File

@@ -1,90 +1,6 @@
export class Events {
private c: {[topic: string]: Function[]} = [] as any;
/**
* Subscribe to an event topic. Events that get posted to that topic will trigger the provided handler.
*
* @param {string} topic the topic to subscribe to
* @param {function} handler the event handler
*/
subscribe(topic: string, ...handlers: Function[]) {
if (!this.c[topic]) {
this.c[topic] = [];
}
handlers.forEach((handler) => {
this.c[topic].push(handler);
});
}
/**
* Unsubscribe from the given topic. Your handler will no longer receive events published to this topic.
*
* @param {string} topic the topic to unsubscribe from
* @param {function} handler the event handler
*
* @return true if a handler was removed
*/
unsubscribe(topic: string, handler: Function = null) {
const t = this.c[topic];
if (!t) {
// Wasn't found, wasn't removed
return false;
}
if (!handler) {
// Remove all handlers for this topic
delete this.c[topic];
return true;
}
// We need to find and remove a specific handler
const i = t.indexOf(handler);
if (i < 0) {
// Wasn't found, wasn't removed
return false;
}
t.splice(i, 1);
// If the channel is empty now, remove it from the channel map
if (!t.length) {
delete this.c[topic];
}
return true;
}
/**
* Publish an event to the given topic.
*
* @param {string} topic the topic to publish to
* @param {any} eventData the data to send as the event
*/
publish(topic: string, ...args: any[]) {
const t = this.c[topic];
if (!t) {
return null;
}
const responses: any[] = [];
t.forEach((handler: any) => {
responses.push(handler(...args));
});
return responses;
}
}
export function setupEvents(win: Window, doc: Document) {
const events = new Events();
win.addEventListener('online', ev => events.publish('app:online', ev));
win.addEventListener('offline', ev => events.publish('app:offline', ev));
win.addEventListener('orientationchange', ev => events.publish('app:rotated', ev));
win.addEventListener('statusTap', () => {
const centerElm = doc.elementFromPoint(win.innerWidth / 2, win.innerHeight / 2);
@@ -94,8 +10,6 @@ export function setupEvents(win: Window, doc: Document) {
scrollElm.componentOnReady(() => scrollElm.scrollToTop(300));
}
}
});
return events;
}

2
packages/core/src/global/ionic-global.ts
View File

@@ -31,7 +31,7 @@ Ionic.config = Context.config = createConfigController(
Context.platforms
);
Ionic.Events = Context.Events = setupEvents(window, document);
setupEvents(window, document);
// first see if the mode was set as an attribute on <html>
// which could have been set by the user, or by prerendering