const metaToValue = function (meta) {
switch (meta.type) {
case 'value':
return meta.value
case 'remote-object':
return objectsRegistry.get(meta.id)
case 'array':
return unwrapArgs(sender, frameId, contextId, meta.value)
case 'buffer':
return bufferUtils.metaToBuffer(meta.value)
case 'date':
return new Date(meta.value)
case 'promise':
return Promise.resolve({
then: metaToValue(meta.then)
})
case 'object': {
const ret = {}
Object.defineProperty(ret.constructor, 'name', { value: meta.name })
for (const { name, value } of meta.members) {
ret[name] = metaToValue(value)
}
return ret
}
case 'function-with-return-value':
const returnValue = metaToValue(meta.value)
return function () {
return returnValue
}
case 'function': {
// Merge contextId and meta.id, since meta.id can be the same in
// different webContents.
const objectId = [contextId, meta.id]
// Cache the callbacks in renderer.
if (rendererFunctions.has(objectId)) {
return rendererFunctions.get(objectId)
}
const callIntoRenderer = function (...args) {
let succeed = false
if (!sender.isDestroyed()) {
succeed = sender._sendToFrameInternal(frameId, 'ELECTRON_RENDERER_CALLBACK', contextId, meta.id, valueToMeta(sender, contextId, args))
}
if (!succeed) {
removeRemoteListenersAndLogWarning(this, callIntoRenderer)
}
}
v8Util.setHiddenValue(callIntoRenderer, 'location', meta.location)
Object.defineProperty(callIntoRenderer, 'length', { value: meta.length })
v8Util.setRemoteCallbackFreer(callIntoRenderer, contextId, meta.id, sender)
rendererFunctions.set(objectId, callIntoRenderer)
return callIntoRenderer
}
default:
throw new TypeError(`Unknown type: ${meta.type}`)
}
}
buffer: () => bufferUtils.metaToBuffer(meta.value),