fix search window

app/node_modules/electron-find/src/find.js

@@ -0,0 +1,93 @@
+const EventEmitter = require('events')
+const { print } = require('./utils.js')
+
+const stopActions = ['clearSelection', 'keepSelection', 'activateSelection']
+const wcs = Symbol('webContents')
+const opts = Symbol('options')
+const requestId = Symbol('requestId')
+const activeMatch = Symbol('activeMatch')
+const matches = Symbol('matches')
+const initd = Symbol('initd')
+const preText = Symbol('preText')
+
+class Find extends EventEmitter {
+  constructor (webContents, options = {}) {
+    super()
+    this[wcs] = webContents
+    this[opts] = options
+    this[requestId] = null
+    this[activeMatch] = 0
+    this[matches] = 0
+    this[initd] = false
+    this[preText] = ''
+  }
+  initFind () {
+    if (this[initd]) return false
+    if (isWebContents.call(this)) {
+      bindFound.call(this)
+      return this[initd] = true
+    } else {
+      throw new Error('[Find] In need of a valid webContents !')
+    }
+  }
+  destroyFind () {
+    this[wcs] = null
+    this[opts]  = null
+    this[requestId] = null
+    this[activeMatch] = 0
+    this[matches] = 0
+    this[initd] = false
+    this[preText] = ''
+  }
+  isFinding () {
+    return !!this[requestId]
+  }
+  startFind (text = '', forward = true, matchCase = false) {
+    if (!text) return
+    this[activeMatch] = 0
+    this[matches] = 0
+    this[preText] = text
+    this[requestId] = this[wcs].findInPage(this[preText], {
+      forward,
+      matchCase 
+    })
+    print(`[Find] startFind text=${text} forward=${forward} matchCase=${matchCase}`)
+  }
+  findNext (forward, matchCase = false) {
+    if (!this.isFinding()) throw new Error('Finding did not start yet !')
+    this[requestId] = this[wcs].findInPage(this[preText], {
+      forward,
+      matchCase,
+      findNext: true
+    })
+    print(`[Find] findNext text=${this[preText]} forward=${forward} matchCase=${matchCase}`)
+  }
+  stopFind (action) {
+    stopActions.includes(action) ? '' : action = 'clearSelection'
+    this[wcs].stopFindInPage(action)
+    print(`[Find] stopFind action=${action}`)
+  }
+}
+function isWebContents () {
+  return (this[wcs] && 
+    typeof this[wcs].findInPage === 'function' &&
+    typeof this[wcs].stopFindInPage === 'function')
+}
+function bindFound () {
+  this[wcs].on('found-in-page', (e, r) => {
+    onFoundInPage.call(this, r)
+  })
+}
+function onFoundInPage (result) {
+  print('[Find] onFoundInPage, ', result)
+  if (this[requestId] !== result.requestId) return
+  typeof result.activeMatchOrdinal === 'number' ? this[activeMatch] = result.activeMatchOrdinal : ''
+  typeof result.matches === 'number' ? this[matches] = result.matches : ''
+  result.finalUpdate ? reportResult.call(this) : ''
+}
+function reportResult () {
+  this.emit('result', this[activeMatch], this[matches])
+  typeof this[opts].onResult === 'function' ? this[opts].onResult(this[activeMatch], this[matches]) : ''
+}
+
+module.exports = Find