[WIP] タイムラインの自動更新

Rakefile

@@ -5,6 +5,7 @@ require 'bundler/setup'
 Bundler.require :default
 
 require 'sugarcube-attributedstring'
+require 'bubble-wrap/reactor'
 
 Motion::Project::App.setup do |app|
   # Use `rake config' to see complete project settings.

app/app_delegate.rb

@@ -18,7 +18,7 @@ def application(application, didFinishLaunchingWithOptions:launchOptions)
     app_user   = ApplicationUser.sharedUser.load
 
     ## initialize BugSense
-    if app_user.send_bugreport?
+    if not Device.simulator? and app_user.send_bugreport?
       BugSenseController.sharedControllerWithBugSenseAPIKey(
         app_config.vars['bugsense']['api_key']
       )

app/cocoa/ui_table_view.rb

@@ -0,0 +1,21 @@
+class UITableView
+  def reloadDataWithKeepingSelectedRowAnimated(animated)
+    indexPath = self.indexPathForSelectedRow
+    self.reloadData
+    # self.reloadDataWithRowAnimation(UITableViewRowAnimationNone)
+    self.selectRowAtIndexPath(indexPath, animated:animated, scrollPosition:UITableViewScrollPositionNone);
+  end
+
+  def reloadDataWithRowAnimation(animation)
+    indexSet = NSIndexSet.indexSetWithIndex(0)
+    self.reloadSections(indexSet, withRowAnimation:animation)
+  end
+
+  def reloadDataWithDeselectingRowAnimated(animated)
+    indexPath = self.indexPathForSelectedRow
+    self.reloadData
+    # self.reloadDataWithRowAnimation(UITableViewRowAnimationNone)
+    self.selectRowAtIndexPath(indexPath, animated:animated, scrollPosition:UITableViewScrollPositionNone);
+    self.deselectRowAtIndexPath(indexPath, animated:animated);
+  end
+end

app/controller/module/remote_push_notification_event.rb

@@ -0,0 +1,19 @@
+module HBFav2
+  module RemotePushNotificationEvent
+    def receive_remote_push_notifcation_event
+      @receive_remote_push_notification_ = true
+      nc = NSNotificationCenter.defaultCenter
+      nc.addObserver(self, selector:"applicationDidReceiveRemoteNotification:", name:"applicationDidReceiveRemoteNotification", object:nil)
+    end
+
+    def applicationDidReceiveRemoteNotification(userInfo)
+    end
+
+    def unreceive_remote_push_notification_event
+      if @receive_remote_push_notification_
+        nc = NSNotificationCenter.defaultCenter
+        nc.removeObserver(self, name:"applicationDidReceiveRemoteNotification:", object:nil)
+      end
+    end
+  end
+end

app/controller/timeline_view_controller.rb

@@ -2,6 +2,7 @@
 class TimelineViewController < HBFav2::UITableViewController
   attr_accessor :user, :content_type
   include HBFav2::ApplicationSwitchNotification
+  include HBFav2::RemotePushNotificationEvent
 
   DefaultTitle = "HBFav"
 
@@ -22,6 +23,7 @@ def removeObserver
   def viewDidLoad
     super
 
+    @last_bookmarks_size = 0
     @bookmarks = self.initialize_feed_manager(self.user)
 
     self.view.backgroundColor = UIColor.whiteColor
@@ -49,6 +51,9 @@ def viewDidLoad
     self.tableView.addGestureRecognizer(
       UILongPressGestureRecognizer.alloc.initWithTarget(self, action:'on_long_press_row:')
     )
+    self.receive_application_switch_notifcation
+    self.receive_remote_push_notifcation_event
+    self.start_periodic_update(60.0)
   end
 
   def on_long_press_row(recog)
@@ -83,7 +88,6 @@ def initialize_bookmarks
         self.refreshControl.update_title(res.error_message)
       else
         self.refreshControl.update_title
-        # tableView.reloadData ## 要らない模様 (observerで更新される)
         if @bookmarks.size > 0
           @footer_indicator.startAnimating
         else
@@ -131,7 +135,19 @@ def paginate
 
   def observeValueForKeyPath(keyPath, ofObject:object, change:change, context:context)
     if (@bookmarks == object and keyPath == 'bookmarks')
-      view.reloadData
+      if  @bookmarks.timebased? and
+          @bookmarks.prepended? and
+          @last_bookmarks_size != 0 and
+          @last_bookmarks_size != @bookmarks.size
+
+        ## FIXME: 差分の割り出しは本当は change オブジェクトを使うべき
+        size = @bookmarks.size - @last_bookmarks_size
+        @last_bookmarks_size = @bookmarks.size
+        self.tableView(view, reloadDataWithKeepingContentOffset:size)
+      else
+        view.reloadDataWithKeepingSelectedRowAnimated(true)
+        @last_bookmarks_size = @bookmarks.size
+      end
     end
 
     if (ApplicationUser.sharedUser == object and keyPath == 'hatena_id' and self.home?)
@@ -143,6 +159,21 @@ def observeValueForKeyPath(keyPath, ofObject:object, change:change, context:cont
     end
   end
 
+  def tableView(tableView, reloadDataWithKeepingContentOffset:prependedRowSize)
+    offset = tableView.contentOffset
+    tableView.reloadData
+    for i in (0..prependedRowSize - 1) do
+      offset.y += self.tableView(
+        tableView,
+        heightForRowAtIndexPath:NSIndexPath.indexPathForRow(i, inSection:0)
+      )
+    end
+    if offset.y > tableView.contentSize.height
+      offset.y = 0
+    end
+    tableView.setContentOffset(offset)
+  end
+
   ## 末尾付近に来たら次のフィードを読み込む (paging)
   def tableView(tableView, willDisplayCell:cell, forRowAtIndexPath:indexPath)
     if (not @bookmarks.updating? and @bookmarks.size > 0 and indexPath.row >= @bookmarks.size - 5)
@@ -159,26 +190,15 @@ def update_title
   end
 
   def viewWillAppear(animated)
-    self.receive_application_switch_notifcation
     self.update_title
     self.navigationController.setToolbarHidden(true, animated:true)
-
-    indexPath = tableView.indexPathForSelectedRow
-    tableView.reloadData
-    tableView.selectRowAtIndexPath(indexPath, animated:animated, scrollPosition:UITableViewScrollPositionNone);
-    tableView.deselectRowAtIndexPath(indexPath, animated:animated);
-
+    tableView.reloadDataWithDeselectingRowAnimated(animated)
     @indicator.center = [ view.center.x, view.center.y - 42 ]
     @footer_indicator.center = [@footerView.frame.size.width / 2, @footerView.frame.size.height / 2]
 
     super
   end
 
-  def viewWillDisappear(animated)
-    self.unreceive_application_switch_notification
-    super
-  end
-
   def tableView(tableView, numberOfRowsInSection:section)
     return @bookmarks.size
   end
@@ -204,13 +224,15 @@ def tableView(tableView, cellForRowAtIndexPath:indexPath)
 
   def tableView(tableView, didSelectRowAtIndexPath:indexPath)
     bookmark = @bookmarks[indexPath.row]
+
     if bookmark.kind_of? Placeholder
       cell = tableView.cellForRowAtIndexPath(indexPath)
       cell.beginRefreshing
       self.refreshControl.beginRefreshing
       @bookmarks.replace_placeholder(bookmark) do |response|
         self.refreshControl.endRefreshing
         cell.endRefreshing
+        tableView.deselectRowAtIndexPath(indexPath, animated:true)
       end
     else
       controller = BookmarkViewController.new.tap { |c| c.bookmark = @bookmarks[indexPath.row] }
@@ -241,12 +263,32 @@ def on_refresh
   end
 
   def applicationWillEnterForeground
+    if self.home? and @bookmarks.timebased?
+      @bookmarks.update(true)
+    end
     ## 相対時刻更新
-    self.tableView.reloadData
+    self.view.reloadDataWithKeepingSelectedRowAnimated(true)
+  end
+
+  def applicationDidReceiveRemoteNotification(userInfo)
+    if self.home? and @bookmarks.timebased?
+      @bookmarks.update(true)
+    end
+  end
+
+  def start_periodic_update(interval = 60.0)
+    EM.add_periodic_timer interval do
+      if self.home? and @bookmarks.timebased?
+        NSLog("Attempting to update timeline...")
+        @bookmarks.update(true)
+      end
+    end
   end
 
   def dealloc
     self.removeObserver
+    self.unreceive_application_switch_notification
+    self.unreceive_remote_push_notification_event
     NSLog("dealloc: " + self.class.name)
     super
   end

app/model/feed_manager.rb

@@ -16,6 +16,7 @@ def initialize
     @url = nil
     @bookmarks = []
     @updating = nil
+    @last_update_method = nil
   end
 
   def size
@@ -91,10 +92,12 @@ def prepend(bookmarks)
       if @bookmarks.size > 0 and bookmarks.first.id == @bookmarks.first.id
         # 新着なし
       else
-        ## test
+        ## 以下二行テスト用
         # dt = bookmarks[4].datetime
         # bookmarks.insert(5, Placeholder.new(5, dt))
 
+        @last_update_method = 'prepend'
+
         origin_size = @bookmarks.size
         boundary = bookmarks.size
         bookmarks.concat(@bookmarks)
@@ -110,6 +113,7 @@ def prepend(bookmarks)
     end
 
     def append(bookmarks)
+      @last_update_method = 'append'
       self << bookmarks
     end
 
@@ -126,6 +130,7 @@ def uniq!
     end
 
     def replace(i, bookmarks)
+      @last_update_method = 'replace'
       ## 取ってきたフィードそのものに被りがあると上手くいかないので先に uniq
       bookmarks.uniq! { |b| b.id }
 
@@ -162,6 +167,14 @@ def replace_placeholder(ph, &cb)
         cb.call(response) if cb
       end
     end
+
+    def prepended?
+      @last_update_method == 'prepend'
+    end
+
+    def timebased?
+      true
+    end
   end
 
   class Offset < FeedManager
@@ -181,5 +194,9 @@ def prepend(bookmarks)
     def append(bookmarks)
       self << bookmarks
     end
+
+    def timebased?
+      false
+    end
   end
 end

app/remote_notification_delegate.rb

@@ -38,6 +38,12 @@ def application(application, didReceiveRemoteNotification:userInfo)
             banner.detailTextLabel.font = UIFont.systemFontOfSize(13)
             banner.detailTextLabel.textColor = "#333333".uicolor
           end
+
+          ## 他の画面でローカルpushイベントを採れるように、発火
+          notify = NSNotification.notificationWithName(
+            "applicationDidReceiveRemoteNotification", object:userInfo
+          )
+          NSNotificationCenter.defaultCenter.postNotification(notify)
         end
       when UIApplicationStateInactive then
         PFAnalytics.trackAppOpenedWithRemoteNotificationPayload(userInfo)