1 files changed, 62 insertions, 0 deletions
diff --git a/js/app/directives/newsitemscroll.coffee b/js/app/directives/newsitemscroll.coffee
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+++ b/js/app/directives/newsitemscroll.coffee
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+###
+
+ownCloud - News
+
+@author Bernhard Posselt
+@copyright 2012 Bernhard Posselt nukeawhale@gmail.com
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+License as published by the Free Software Foundation; either
+version 3 of the License, or any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+
+You should have received a copy of the GNU Affero General Public
+License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+###
+
+scrolling = true
+markingRead = true
+
+angular.module('News').directive 'newsItemScroll', ['$rootScope', 'Config',
+($rootScope, Config) ->
+
+	return (scope, elm, attr) ->
+
+		elm.bind 'scroll', ->
+			# prevent from doing to many scroll actions
+			# the first timeout prevents accidental and too early marking as read
+			if scrolling
+				scrolling = false
+				setTimeout ->
+					scrolling = true
+				, Config.ScrollTimeout
+
+				if markingRead
+					markingRead = false
+					setTimeout ->
+						markingRead = true
+						# only broadcast elements that are not already read
+						# and that are beyond the top border
+						$elems = elm.find('.feed_item:not(.read)')
+
+						for feedItem in $elems
+							offset = $(feedItem).position().top
+							if offset <= -50
+								id = parseInt($(feedItem).data('id'), 10)
+								#$rootScope.$broadcast 'readItem', id
+
+							else
+								break
+
+					, Config.MarkReadTimeout
+
+				scope.$apply attr.newsItemScroll
+
+]
+