git ssb

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const nest = require('depnest')
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const { h } = require('mutant')
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const Tabs = require('hypertabs')
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exports.gives = nest({
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  'app.html.tabs': true
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})
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exports.needs = nest({
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  'app.html.menu': 'first',
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  'app.html.searchBar': 'first',
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  'app.sync.goTo': 'first',
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  'history.obs.store': 'first',
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  'history.sync.push': 'first'
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})
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exports.create = function (api) {
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  var _tabs
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  return nest({
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    'app.html.tabs': tabs
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  })
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  function tabs (initialTabs = []) {
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    if (_tabs) return _tabs
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    const onSelect = (indexes) => {
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      const { id } = _tabs.get(indexes[0]).content
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      try {
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        var location = JSON.parse(id)
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      } catch (e) {
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        debugger
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        throw new Error('app.html.tabs expects all page ids to be stringified location objects')
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      }
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      api.history.sync.push(location)
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      search.input.value = buildSearchBarTermFromLocation(location)
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    }
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    const onClose = (page) => {
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      var history = api.history.obs.store()
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      const prunedHistory = history().filter(loc => {
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        return JSON.stringify(loc) != page.id
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      })
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      history.set(prunedHistory)
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    }
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    const search = api.app.html.searchBar()
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    const menu = api.app.html.menu()
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    _tabs = Tabs({
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      onSelect,
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      onClose,
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      append: h('div.navExtra', [ search, menu ])
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    })
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    _tabs.currentPage = () => _tabs.get(_tabs.selected[0]).firstChild
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    // # TODO: review - this works but is strange
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    initialTabs.forEach(p => api.app.sync.goTo(p))
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    api.app.sync.goTo(initialTabs[0])
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    return _tabs
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  }
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}
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// TODO - move this responsibility out to the searchBar?
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function buildSearchBarTermFromLocation (location) {
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  const { page, query } = location
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  if (page === 'search') return '?' + query
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  const keys = Object.keys(location)
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  if (page && keys.length === 1) return '/' + page
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  return keys
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    .map(k => location[k])
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    .join(', ')
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}
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