增加“关闭时最小化到托盘”的设置 (#166)

添加托盘设置，调整主进程代码架构

src/main/rendererEvents/request.js

@@ -0,0 +1,45 @@
+const request = require('request')
+
+const { mainOn } = require('../../common/ipc')
+
+const tasks = []
+
+mainOn('request', (event, options) => {
+  // console.log(args)
+  if (!options) return
+  let index = fetchData(options, (err, resp) => {
+    tasks[index] = null
+    if (err) {
+      console.log(err)
+      event.sender.send('response', err.message, null)
+      return
+    }
+    event.sender.send('response', null, resp.body)
+  })
+  event.returnValue = index
+})
+
+mainOn('cancelRequest', (event, index) => {
+  if (index == null) return
+  let r = tasks[index]
+  if (r == null) return
+  r.abort()
+  tasks[index] = null
+})
+
+const fetchData = (options, callback) => pushTask(tasks, request(options.url, {
+  method: options.method,
+  headers: options.headers,
+  Origin: options.origin,
+}, (err, resp) => {
+  if (err) return callback(err, null)
+  callback(null, resp)
+}))
+
+const pushTask = (tasks, newTask) => {
+  for (const [index, task] of tasks.entries()) {
+    if (task == null) {
+      return tasks[index].push(newTask)
+    }
+  }
+}