browser.js

'use strict'
const ipc = require('electron').ipcRenderer

function isKeep() {
    return window.location.hostname === 'hackmd.io'
}

function injectCss(rule) {
    document.styleSheets[0].insertRule(rule, 0)
}

function handleDOMLoaded() {
    if (!isKeep()) return

    if (process.platform === 'darwin') {
        injectCss(`
      #ognwrapper {
        -webkit-app-region: drag;
      }
    `)

        injectCss(`
      #ognwrapper form,
      #ognwrapper [role="menu"],
      #ognwrapper [role="button"] {
        -webkit-app-region: no-drag;
      }
    `)

        injectCss(`
      #ognwrapper > :first-child > :nth-child(2) {
        padding-left: 75px;
      }
    `)
    }

    /* Not Showing the Scrollbar */
    /*
      injectCss(`
        ::-webkit-scrollbar {
          display: none !important;
        }
      `)
    */
}

function handleClick(event) {
    const node = event.target

    if (node.nodeName === 'A' && node.target === '_blank') {
        event.preventDefault()
        ipc.send('clicklink', node.href)
    }
}

function handleNavigate(event, hash) {
    window.location.hash = hash
}

window.addEventListener('DOMContentLoaded', handleDOMLoaded, false)
window.addEventListener('click', handleClick, false)
ipc.on('navigate', handleNavigate)