git ssb

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var Tabs = require('hypertabs')
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var h = require('hyperscript')
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var pull = require('pull-stream')
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var u = require('../util')
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var keyscroll = require('../keyscroll')
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function ancestor (el) {
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  if(!el) return
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  if(el.tagName !== 'A') return ancestor(el.parentElement)
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  return el
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}
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var plugs = require('../plugs')
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var screen_view = plugs.first(exports.screen_view = [])
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var search_box = plugs.first(exports.search_box = [])
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function openExternal (url) {
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  var _r = require //fool browserify
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  //electron@1
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  try {return _r('electron').shell.openExternal(url) }
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  catch (err) { }
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  //electron@0
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  try { return _r('shell').openExternal(url) }
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  catch (err) { }
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  //browser
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  window.open(url, '_blank')
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}
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exports.message_render = []
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exports.app = function () {
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  var search
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  var tabs = Tabs(function (name) {
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    search.value = name
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    sessionStorage.selectedTab = tabs.selected
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  })
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  tabs.classList.add('screen')
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  search = search_box(function (path, change) {
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    if(tabs.has(path)) {
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      tabs.select(path)
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      return true
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    }
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    var el = screen_view(path)
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    if(el) {
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      el.scroll = keyscroll(el.querySelector('.scroller__content'))
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      tabs.add(path, el, change)
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      localStorage.openTabs = JSON.stringify(tabs.tabs)
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      return change
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    }
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  })
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  tabs.insertBefore(search, tabs.querySelector('.hypertabs__content'))
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  var saved = []
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  try { saved = JSON.parse(localStorage.openTabs) }
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  catch (_) { }
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  if(!saved || saved.length < 3)
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    saved = ['/public', '/private', '/notifications']
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  saved.forEach(function (path) {
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    var el = screen_view(path)
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    if (!el) return
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    el.scroll = keyscroll(el.querySelector('.scroller__content'))
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    if(el) tabs.add(path, el, false)
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  })
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  tabs.select(sessionStorage.selectedTab || saved[0] || '/public')
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  tabs.onclick = function (ev) {
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    var link = ancestor(ev.target)
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    if(!link) return
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    var path = link.hash.substring(1)
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    ev.preventDefault()
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    ev.stopPropagation()
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    //open external links.
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    //this ought to be made into something more runcible
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    if(/^https?/.test(link.href)) return openExternal(link.href)
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    if(tabs.has(path)) return tabs.select(path)
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    var el = screen_view(path)
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    if(el) {
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      el.scroll = keyscroll(el.querySelector('.scroller__content'))
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      tabs.add(path, el, !ev.ctrlKey)
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      localStorage.openTabs = JSON.stringify(tabs.tabs)
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    }
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    return false
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  }
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  window.addEventListener('keydown', function (ev) {
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    if (ev.target.nodeName === 'INPUT' || ev.target.nodeName === 'TEXTAREA')
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      return
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    switch(ev.keyCode) {
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      // scroll through tabs
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      case 72: // h
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        return tabs.selectRelative(-1)
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      case 76: // l
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        return tabs.selectRelative(1)
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      // scroll through messages
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      case 74: // j
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        return tabs.selectedTab.scroll(1)
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      case 75: // k
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        return tabs.selectedTab.scroll(-1)
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      // close a tab
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      case 88: // x
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        if (tabs.selected && tabs.selected[0] !== '/') {
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          var sel = tabs.selected
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          tabs.selectRelative(-1)
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          tabs.remove(sel)
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          localStorage.openTabs = JSON.stringify(tabs.tabs)
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        }
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        return
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      // activate the search field
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      case 191: // /
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        search.activate('?', ev)
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        return
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      // navigate to a feed
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      case 50: // 2
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        if (ev.shiftKey)
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          search.activate('@', ev)
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        return
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      // navigate to a channel
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      case 51: // 3
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        if (ev.shiftKey)
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          search.activate('#', ev)
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        return
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    }
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  })
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  // errors tab
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  var errorsContent = h('div.column.scroller__content')
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  var errors = h('div.column.scroller',
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    {style: {'overflow':'auto'}},
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    h('div.scroller__wrapper',
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      errorsContent
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    )
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  )
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  window.addEventListener('error', function (ev) {
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    var err = ev.error || ev
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    if(!tabs.has('errors'))
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      tabs.add('errors', errors, false)
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    var el = h('div.message',
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      h('strong', err.message),
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      h('pre', err.stack))
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    if (errorsContent.firstChild)
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      errorsContent.insertBefore(el, errorsContent.firstChild)
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    else
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      errorsContent.appendChild(el)
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  })
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  return tabs
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}
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