@ -11,7 +11,7 @@ define('forum/topic/posts', [
] , function ( pagination , infinitescroll , postTools , navigator , components ) {
var Posts = {
_ threshold: 0
_ imageLoaderTimeout: undefined
} ;
Posts . onNewPost = function ( data ) {
@ -181,10 +181,13 @@ define('forum/topic/posts', [
}
Posts . loadMorePosts = function ( direction ) {
if ( ! components . get ( 'topic' ) . length || navigator . scrollActive ) {
if ( ! components . get ( 'topic' ) . length || navigator . scrollActive || Posts . _infiniteScrollTimeout ) {
return ;
}
Posts . _infiniteScrollTimeout = setTimeout ( function ( ) {
delete Posts . _infiniteScrollTimeout ;
} , 1000 ) ;
var replies = components . get ( 'post' ) . not ( '[data-index=0]' ) . not ( '.new' ) ;
var afterEl = direction > 0 ? replies . last ( ) : replies . first ( ) ;
var after = parseInt ( afterEl . attr ( 'data-index' ) , 10 ) || 0 ;
@ -204,7 +207,6 @@ define('forum/topic/posts', [
after : after ,
direction : direction
} , function ( data , done ) {
indicatorEl . fadeOut ( ) ;
if ( data && data . posts && data . posts . length ) {
@ -235,78 +237,79 @@ define('forum/topic/posts', [
} ;
Posts . unloadImages = function ( posts ) {
var images = posts . find ( '[component="post/content"] img:not(.not-responsive)' ) ,
scrollTop = $ ( window ) . scrollTop ( ) ,
height = $ ( document ) . height ( ) ;
var images = posts . find ( '[component="post/content"] img:not(.not-responsive)' ) ;
images . each ( function ( ) {
$ ( this ) . attr ( 'data-src' , $ ( this ) . attr ( 'src' ) ) ;
$ ( this ) . attr ( 'data-state' , 'unloaded' ) ;
$ ( this ) . attr ( 'src' , ' data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7 ') ;
$ ( this ) . attr ( 'src' , ' about:blank ') ;
} ) ;
$ ( window ) . scrollTop ( scrollTop + $ ( document ) . height ( ) - height ) ;
} ;
Posts . loadImages = function ( threshold ) {
/ *
If threshold is defined , images loaded above this threshold will modify
the user ' s scroll position so they are not scrolled away from content
they were reading . Images loaded below this threshold will push down content .
If no threshold is defined , loaded images will push down content , as per
default
* /
Posts . _threshold = threshold ;
var images = components . get ( 'post/content' ) . find ( 'img[data-state="unloaded"]' ) ,
visible = images . filter ( function ( ) {
return utils . isElementInViewport ( this ) ;
} ) ,
scrollTop = $ ( window ) . scrollTop ( ) ,
adjusting = false ,
adjustQueue = [ ] ,
adjustPosition = function ( ) {
adjusting = true ;
oldHeight = document . body . clientHeight ;
// Display the image
$ ( this ) . attr ( 'data-state' , 'loaded' ) ;
newHeight = document . body . clientHeight ;
var imageRect = this . getBoundingClientRect ( ) ;
if ( imageRect . top < Posts . _threshold ) {
scrollTop = scrollTop + ( newHeight - oldHeight ) ;
$ ( window ) . scrollTop ( scrollTop ) ;
}
if ( Posts . _imageLoaderTimeout ) {
clearTimeout ( Posts . _imageLoaderTimeout ) ;
}
if ( adjustQueue . length ) {
adjustQueue . pop ( ) ( ) ;
} else {
adjusting = false ;
}
} ,
oldHeight , newHeight ;
// For each image, reset the source and adjust scrollTop when loaded
visible . attr ( 'data-state' , 'loading' ) ;
visible . each ( function ( index , image ) {
image = $ ( image ) ;
image . on ( 'load' , function ( ) {
if ( ! adjusting ) {
adjustPosition . call ( this ) ;
} else {
adjustQueue . push ( adjustPosition . bind ( this ) ) ;
Posts . _imageLoaderTimeout = setTimeout ( function ( ) {
/ *
If threshold is defined , images loaded above this threshold will modify
the user ' s scroll position so they are not scrolled away from content
they were reading . Images loaded below this threshold will push down content .
If no threshold is defined , loaded images will push down content , as per
default
* /
var images = components . get ( 'post/content' ) . find ( 'img[data-state="unloaded"]' ) ,
visible = images . filter ( function ( ) {
return utils . isElementInViewport ( this ) ;
} ) ,
scrollTop = $ ( window ) . scrollTop ( ) ,
adjusting = false ,
adjustQueue = [ ] ,
adjustPosition = function ( ) {
adjusting = true ;
oldHeight = document . body . clientHeight ;
// Display the image
$ ( this ) . attr ( 'data-state' , 'loaded' ) ;
newHeight = document . body . clientHeight ;
var imageRect = this . getBoundingClientRect ( ) ;
if ( imageRect . top < threshold ) {
scrollTop = scrollTop + ( newHeight - oldHeight ) ;
$ ( window ) . scrollTop ( scrollTop ) ;
}
if ( adjustQueue . length ) {
adjustQueue . pop ( ) ( ) ;
} else {
adjusting = false ;
}
} ,
oldHeight , newHeight ;
// For each image, reset the source and adjust scrollTop when loaded
visible . attr ( 'data-state' , 'loading' ) ;
visible . each ( function ( index , image ) {
image = $ ( image ) ;
image . on ( 'load' , function ( ) {
if ( ! adjusting ) {
adjustPosition . call ( this ) ;
} else {
adjustQueue . push ( adjustPosition . bind ( this ) ) ;
}
} ) ;
image . attr ( 'src' , image . attr ( 'data-src' ) ) ;
if ( image . parent ( ) . attr ( 'href' ) === 'about:blank' ) {
image . parent ( ) . attr ( 'href' , image . attr ( 'data-src' ) ) ;
}
image . removeAttr ( 'data-src' ) ;
} ) ;
image . attr ( 'src' , image . attr ( 'data-src' ) ) ;
if ( image . parent ( ) . attr ( 'href' ) ) {
image . parent ( ) . attr ( 'href' , image . attr ( 'data-src' ) ) ;
}
image . removeAttr ( 'data-src' ) ;
} ) ;
} , 250 ) ;
} ;
Posts . wrapImagesInLinks = function ( posts ) {
@ -321,13 +324,10 @@ define('forum/topic/posts', [
Posts . showBottomPostBar = function ( ) {
var mainPost = components . get ( 'post' , 'index' , 0 ) ;
var posts = $ ( '[component="post"]' ) ;
var height = $ ( document ) . height ( ) ;
if ( ! ! mainPost . length && posts . length > 1 && $ ( '.post-bar' ) . length < 2 ) {
$ ( '.post-bar' ) . clone ( ) . appendTo ( mainPost ) ;
$ ( window ) . scrollTop ( $ ( window ) . scrollTop ( ) + $ ( document ) . height ( ) - height ) ;
} else if ( mainPost . length && posts . length < 2 ) {
mainPost . find ( '.post-bar' ) . remove ( ) ;
$ ( window ) . scrollTop ( $ ( window ) . scrollTop ( ) - $ ( document ) . height ( ) - height ) ;
}
} ;
Yami
9 years ago