55 lines
1.5 KiB
TypeScript
55 lines
1.5 KiB
TypeScript
const v8Util = process.electronBinding('v8_util')
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export class CallbacksRegistry {
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private nextId: number = 0
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private callbacks = new Map<number, Function>()
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add (callback: Function) {
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// The callback is already added.
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let id = v8Util.getHiddenValue<number>(callback, 'callbackId')
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if (id != null) return id
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id = this.nextId += 1
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// Capture the location of the function and put it in the ID string,
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// so that release errors can be tracked down easily.
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const regexp = /at (.*)/gi
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const stackString = (new Error()).stack
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if (!stackString) return
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let filenameAndLine
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let match
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while ((match = regexp.exec(stackString)) !== null) {
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const location = match[1]
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if (location.includes('(native)')) continue
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if (location.includes('(<anonymous>)')) continue
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if (location.includes('electron/js2c')) continue
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const ref = /([^/^)]*)\)?$/gi.exec(location)
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if (ref) filenameAndLine = ref![1]
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break
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}
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this.callbacks.set(id, callback)
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v8Util.setHiddenValue(callback, 'callbackId', id)
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v8Util.setHiddenValue(callback, 'location', filenameAndLine)
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return id
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}
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get (id: number) {
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return this.callbacks.get(id) || function () {}
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}
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apply (id: number, ...args: any[]) {
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return this.get(id).apply(global, ...args)
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}
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remove (id: number) {
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const callback = this.callbacks.get(id)
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if (callback) {
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v8Util.deleteHiddenValue(callback, 'callbackId')
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this.callbacks.delete(id)
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}
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}
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}
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