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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var open = require('open-external')
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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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var menu = plugs.first(exports.menu = [])
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exports.message_render = []
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exports.screen_view = function (path) {
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  if(path !== 'tabs')
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    return
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  function setSelected (indexes) {
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    var ids = indexes.map(function (index) {
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      return tabs.get(index).id
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    })
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    if(ids.length > 1)
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      search.value = 'split('+ids.join(',')+')'
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    else
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      search.value = ids[0]
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  }
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  var search
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  var tabs = Tabs(setSelected)
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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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      if(!el.title) el.title = path
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      el.scroll = keyscroll(el.querySelector('.scroller__content'))
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      tabs.add(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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  //reposition hypertabs menu to inside a container...
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  tabs.insertBefore(h('div.header.row',
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      h('div.header__tabs.row', tabs.firstChild), //tabs
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      h('div.header__search.row.end', h('div', search), menu())
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  ), tabs.firstChild)
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//  tabs.insertBefore(search, tabs.firstChild.nextSibling)
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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 = ['/public', '/private']
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  saved.forEach(function (path) {
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    var el = screen_view(path)
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    el.id = el.id || 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(el, false, false)
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  })
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  tabs.select(0)
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  //handle link clicks
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  window.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(open.isExternal(link.href)) return open(link.href)
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    if(tabs.has(path))
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      return tabs.select(path, !ev.ctrlKey, !!ev.shiftKey)
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    var el = screen_view(path)
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    if(el) {
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      el.id = el.id || path
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      el.scroll = keyscroll(el.querySelector('.scroller__content'))
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      tabs.add(el, !ev.ctrlKey, !!ev.shiftKey)
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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.get(tabs.selected[0]).scroll(1)
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      case 75: // k
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        return tabs.get(tabs.selected[0]).scroll(-1)
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      // close a tab
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      case 88: // x
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        if (tabs.selected) {
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          var sel = tabs.selected
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          var i = sel.reduce(function (a, b) { return Math.min(a, b) })
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          tabs.remove(sel)
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          tabs.select(Math.max(i-1, 0))
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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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        if (ev.shiftKey)
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          search.activate('?', ev)
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        else
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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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  // remove loader error handler
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  if (window.onError) {
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    window.removeEventListener('error', window.onError)
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    delete window.onError
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  }
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  // put errors in a tab
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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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