myloc_plugin_with_wait.js

/* eslint-disable no-restricted-globals */
;(function () {
  class UMDLocPlugin {
    name = 'UMDLocPlugin'
    version = '1.0'

    install(pluginManager) {
      /* do nothing */
    }

    configure(pluginManager) {
      const { when } = pluginManager.jbrequire('mobx')
      ;(async () => {
        // modification compared with https://gist.github.com/cmdcolin/b71f0567597127bf869804a660b3bc46 which waits for session
        await when(() => pluginManager.rootModel.session)
        const session = pluginManager.rootModel.session
        const view = session.views[0]
        const url = new URL(window.location)
        const myloc = url.searchParams.get('myloc') // use a different term than &loc=
        if (myloc) {
          // asynchronously navigates to the location specified by the url param
          // e.g. &myloc=chr1:1-100
          view.navToLocString(myloc).catch(e => {
            // asynchronously catch the error and alert if something went wrong
            session.notify(`${e}`, 'error')
          })

          // optional: remove the URL parameter
          url.searchParams.delete('myloc')
          window.history.replaceState(null, null, url)
        }
      })()
    }
  }

  // the plugin will be included in both the main thread and web worker, so
  // install plugin to either window or self (webworker global scope)
  ;(typeof self !== 'undefined' ? self : window).JBrowsePluginUMDLocPlugin = {
    default: UMDLocPlugin,
  }
})()