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###
ownCloud - News
@author Bernhard Posselt
@copyright 2012 Bernhard Posselt dev@bernhard-posselt.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
# dont scroll if the value is set to false or there is already
# a mark read request
if markingRead and elm.attr('news-item-scroll') == 'true'
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
# autopaging
counter = 0
# run from the bottom up to be performant
for item in elm.find('.feed_item') by -1
# if the counter is 10 it means that it didnt break to auto
# page yet and that there are more than 10 items, so break
if counter >= Config.autoPageFactor
break
# this is only reached when the item is not is below the top
# and we didnt hit the factor yet so autopage and break
if $(item).position().top < 0
$rootScope.$broadcast 'autoPage'
break
counter += 1
]
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