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import type { Context, DevtoolsPluginApi, Hookable } from './api/index.js'
import type { PluginDescriptor } from './plugin.js'
import { HOOK_PLUGIN_SETTINGS_SET } from './const.js'
import { now } from './time.js'
interface QueueItem {
method: string
args: any[]
resolve?: (value?: any) => void
}
export class ApiProxy<TTarget extends DevtoolsPluginApi<any> = DevtoolsPluginApi<any>> {
target: TTarget | null
targetQueue: QueueItem[]
proxiedTarget: TTarget
onQueue: QueueItem[]
proxiedOn: Hookable<Context>
plugin: PluginDescriptor
hook: any
fallbacks: Record<string, any>
constructor(plugin: PluginDescriptor, hook: any) {
this.target = null
this.targetQueue = []
this.onQueue = []
this.plugin = plugin
this.hook = hook
const defaultSettings: Record<string, any> = {}
if (plugin.settings) {
for (const id in plugin.settings) {
const item = plugin.settings[id]
defaultSettings[id] = item.defaultValue
}
}
const localSettingsSaveId = `__vue-devtools-plugin-settings__${plugin.id}`
let currentSettings = Object.assign({}, defaultSettings)
try {
const raw = localStorage.getItem(localSettingsSaveId)
const data = JSON.parse(raw)
Object.assign(currentSettings, data)
}
catch (e) {
// noop
}
this.fallbacks = {
getSettings() {
return currentSettings
},
setSettings(value) {
try {
localStorage.setItem(localSettingsSaveId, JSON.stringify(value))
}
catch (e) {
// noop
}
currentSettings = value
},
now() {
return now()
},
}
if (hook) {
hook.on(HOOK_PLUGIN_SETTINGS_SET, (pluginId, value) => {
if (pluginId === this.plugin.id) {
this.fallbacks.setSettings(value)
}
})
}
this.proxiedOn = new Proxy({} as Hookable<Context>, {
get: (_target, prop: string) => {
if (this.target) {
return this.target.on[prop]
}
else {
return (...args) => {
this.onQueue.push({
method: prop,
args,
})
}
}
},
})
this.proxiedTarget = new Proxy({} as TTarget, {
get: (_target, prop: string) => {
if (this.target) {
return this.target[prop]
}
else if (prop === 'on') {
return this.proxiedOn
}
else if (Object.keys(this.fallbacks).includes(prop)) {
return (...args) => {
this.targetQueue.push({
method: prop,
args,
resolve: () => { /* noop */ },
})
return this.fallbacks[prop](...args)
}
}
else {
return (...args) => {
return new Promise((resolve) => {
this.targetQueue.push({
method: prop,
args,
resolve,
})
})
}
}
},
})
}
async setRealTarget(target: TTarget) {
this.target = target
for (const item of this.onQueue) {
this.target.on[item.method](...item.args)
}
for (const item of this.targetQueue) {
item.resolve(await this.target[item.method](...item.args))
}
}
}
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