class app.views.Content extends app.View  @el: '._content'  @loadingClass: '_content-loading'   @events:    click: 'onClick'   @shortcuts:    altUp:      'scrollStepUp'    altDown:    'scrollStepDown'    pageUp:     'scrollPageUp'    pageDown:   'scrollPageDown'    pageTop:    'scrollToTop'    pageBottom: 'scrollToBottom'    altF:       'onAltF'   @routes:    before: 'beforeRoute'    after:  'afterRoute'   init: ->    @scrollEl = if app.isMobile()      (document.scrollingElement || document.body)    else      @el    @scrollMap = {}    @scrollStack = []     @rootPage     = new app.views.RootPage    @staticPage   = new app.views.StaticPage    @settingsPage = new app.views.SettingsPage    @offlinePage  = new app.views.OfflinePage    @typePage     = new app.views.TypePage    @entryPage    = new app.views.EntryPage     @entryPage      .on 'loading', @onEntryLoading      .on 'loaded', @onEntryLoaded     app      .on 'ready', @onReady      .on 'bootError', @onBootError     return   show: (view) ->    @hideLoading()    unless view is @view      @view?.deactivate()      @html @view = view      @view.activate()    return   showLoading: ->    @addClass @constructor.loadingClass    return   isLoading: ->    @el.classList.contains @constructor.loadingClass   hideLoading: ->    @removeClass @constructor.loadingClass    return   scrollTo: (value) ->    @scrollEl.scrollTop = value or 0    return   smoothScrollTo: (value) ->    if app.settings.get('fastScroll')      @scrollTo value    else      $.smoothScroll @scrollEl, value or 0    return   scrollBy: (n) ->    @smoothScrollTo @scrollEl.scrollTop + n    return   scrollToTop: =>    @smoothScrollTo 0    return   scrollToBottom: =>    @smoothScrollTo @scrollEl.scrollHeight    return   scrollStepUp: =>    @scrollBy -80    return   scrollStepDown: =>    @scrollBy 80    return   scrollPageUp: =>    @scrollBy 40 - @scrollEl.clientHeight    return   scrollPageDown: =>    @scrollBy @scrollEl.clientHeight - 40    return   scrollToTarget: ->    if @routeCtx.hash and el = @findTargetByHash @routeCtx.hash      $.scrollToWithImageLock el, @scrollEl, 'top',        margin: if @scrollEl is @el then 0 else $.offset(@el).top      $.highlight el, className: '_highlight'    else      @scrollTo @scrollMap[@routeCtx.state.id]    return   onReady: =>    @hideLoading()    return   onBootError: =>    @hideLoading()    @html @tmpl('bootError')    return   onEntryLoading: =>    @showLoading()    if @scrollToTargetTimeout      clearTimeout @scrollToTargetTimeout      @scrollToTargetTimeout = null    return   onEntryLoaded: =>    @hideLoading()    if @scrollToTargetTimeout      clearTimeout @scrollToTargetTimeout      @scrollToTargetTimeout = null    @scrollToTarget()    return   beforeRoute: (context) =>    @cacheScrollPosition()    @routeCtx = context    @scrollToTargetTimeout = @delay @scrollToTarget    return   cacheScrollPosition: ->    return if not @routeCtx or @routeCtx.hash    return if @routeCtx.path is '/'     unless @scrollMap[@routeCtx.state.id]?      @scrollStack.push @routeCtx.state.id      while @scrollStack.length > app.config.history_cache_size        delete @scrollMap[@scrollStack.shift()]     @scrollMap[@routeCtx.state.id] = @scrollEl.scrollTop    return   afterRoute: (route, context) =>    if route != 'entry' and route != 'type'      resetFavicon()     switch route      when 'root'        @show @rootPage      when 'entry'        @show @entryPage      when 'type'        @show @typePage      when 'settings'        @show @settingsPage      when 'offline'        @show @offlinePage      else        @show @staticPage     @view.onRoute(context)    app.document.setTitle @view.getTitle?()    return   onClick: (event) =>    link = $.closestLink $.eventTarget(event), @el    if link and @isExternalUrl link.getAttribute('href')      $.stopEvent(event)      $.popup(link)    return   onAltF: (event) =>    unless document.activeElement and $.hasChild @el, document.activeElement      @find('a:not(:empty)')?.focus()      $.stopEvent(event)   findTargetByHash: (hash) ->    el = try $.id decodeURIComponent(hash) catch    el or= try $.id(hash) catch    el   isExternalUrl: (url) ->    url?[0..5] in ['http:/', 'https:']