32 lines
1.4 KiB
JavaScript
32 lines
1.4 KiB
JavaScript
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const MamiEventTargetScoped = function(eventTarget, prefix) {
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if(typeof eventTarget !== 'object' || eventTarget === null)
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throw 'eventTarget must be a non-null object';
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if(typeof prefix !== 'string')
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throw 'prefix must be a string';
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if(!prefix.endsWith(':'))
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prefix = prefix + ':';
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return {
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scopeTo: name => eventTarget.scopeTo(prefix + name),
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create: (name, ...args) => eventTarget.create(prefix + name, ...args),
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watch: (name, ...args) => eventTarget.watch(prefix + name, ...args),
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unwatch: (name, ...args) => eventTarget.unwatch(prefix + name, ...args),
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dispatch: (nameOrEvent, ...args) => eventTarget.dispatch(nameOrEvent instanceof Event ? nameOrEvent : (prefix + nameOrEvent), ...args),
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};
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};
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const MamiEventTargetWindow = function() {
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const createEvent = (name, detail) => new CustomEvent( name, (typeof detail === 'object' && detail !== null && 'detail' in detail ? detail : { detail: detail }));
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const public = {
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scopeTo: name => new MamiEventTargetScoped(public, name),
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create: createEvent,
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watch: (...args) => { window.addEventListener(...args); },
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unwatch: (...args) => { window.removeEventListener(...args); },
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dispatch: (nameOrEvent, ...args) => { window.dispatchEvent(nameOrEvent instanceof Event ? nameOrEvent : createEvent(nameOrEvent, ...args)); },
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};
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return public;
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};
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