From a418ba15e10fe047a7e75116788500cdc21ad9be Mon Sep 17 00:00:00 2001
From: Jordan <saudrapsmann@gmail.com>
Date: Fri, 10 Jan 2014 22:35:27 -0700
Subject: [PATCH] Add in Zixaphirs infinite scrolling

---
 builds/4chan-X.user.js   | 34 ++++++++++++++++++++++++++++++++++
 builds/crx/script.js     | 34 ++++++++++++++++++++++++++++++++++
 src/General/Index.coffee | 21 +++++++++++++++++++++
 3 files changed, 89 insertions(+)

diff --git a/builds/4chan-X.user.js b/builds/4chan-X.user.js
index 602ab9497..1a84bd3d8 100644
--- a/builds/4chan-X.user.js
+++ b/builds/4chan-X.user.js
@@ -2249,6 +2249,7 @@
       this.searchInput = $('#index-search', this.navLinks);
       this.currentPage = this.getCurrentPage();
       $.on(window, 'popstate', this.cb.popstate);
+      $.on(d, 'scroll', Index.scroll);
       $.on(this.pagelist, 'click', this.cb.pageNav);
       $.on(this.searchInput, 'input', this.onSearchInput);
       $.on($('#index-search-clear', this.navLinks), 'click', this.clearSearch);
@@ -2273,6 +2274,39 @@
         });
       });
     },
+    scroll: $.debounce(100, function() {
+      var nodes, nodesPerPage, pageNum;
+      if (Conf['Index Mode'] !== 'paged' || ((d.body.scrollTop || doc.scrollTop) <= doc.scrollHeight - (300 + window.innerHeight))) {
+        return;
+      }
+      pageNum = Index.getCurrentPage() + 1;
+      if (pageNum >= Index.pagesNum) {
+        return Index.endNotice();
+      }
+      nodesPerPage = Index.threadsNumPerPage * 2;
+      history.pushState(null, '', "/" + g.BOARD + "/" + pageNum);
+      nodes = Index.sortedNodes.slice(nodesPerPage * pageNum, nodesPerPage * (pageNum + 1));
+      if (Conf['Show Replies']) {
+        Index.buildReplies(nodes);
+      }
+      $.add(Index.root, nodes);
+      return Index.setPage();
+    }),
+    endNotice: (function() {
+      var notify, reset;
+      notify = false;
+      reset = function() {
+        return notify = false;
+      };
+      return function() {
+        if (notify) {
+          return;
+        }
+        notify = true;
+        new Notice('info', "Last page reached.", 2);
+        return setTimeout(reset, 3 * $.SECOND);
+      };
+    })(),
     cb: {
       mode: function() {
         Index.togglePagelist();
diff --git a/builds/crx/script.js b/builds/crx/script.js
index 4aa074777..09e53f318 100644
--- a/builds/crx/script.js
+++ b/builds/crx/script.js
@@ -2259,6 +2259,7 @@
       this.searchInput = $('#index-search', this.navLinks);
       this.currentPage = this.getCurrentPage();
       $.on(window, 'popstate', this.cb.popstate);
+      $.on(d, 'scroll', Index.scroll);
       $.on(this.pagelist, 'click', this.cb.pageNav);
       $.on(this.searchInput, 'input', this.onSearchInput);
       $.on($('#index-search-clear', this.navLinks), 'click', this.clearSearch);
@@ -2283,6 +2284,39 @@
         });
       });
     },
+    scroll: $.debounce(100, function() {
+      var nodes, nodesPerPage, pageNum;
+      if (Conf['Index Mode'] !== 'paged' || ((d.body.scrollTop || doc.scrollTop) <= doc.scrollHeight - (300 + window.innerHeight))) {
+        return;
+      }
+      pageNum = Index.getCurrentPage() + 1;
+      if (pageNum >= Index.pagesNum) {
+        return Index.endNotice();
+      }
+      nodesPerPage = Index.threadsNumPerPage * 2;
+      history.pushState(null, '', "/" + g.BOARD + "/" + pageNum);
+      nodes = Index.sortedNodes.slice(nodesPerPage * pageNum, nodesPerPage * (pageNum + 1));
+      if (Conf['Show Replies']) {
+        Index.buildReplies(nodes);
+      }
+      $.add(Index.root, nodes);
+      return Index.setPage();
+    }),
+    endNotice: (function() {
+      var notify, reset;
+      notify = false;
+      reset = function() {
+        return notify = false;
+      };
+      return function() {
+        if (notify) {
+          return;
+        }
+        notify = true;
+        new Notice('info', "Last page reached.", 2);
+        return setTimeout(reset, 3 * $.SECOND);
+      };
+    })(),
     cb: {
       mode: function() {
         Index.togglePagelist();
diff --git a/src/General/Index.coffee b/src/General/Index.coffee
index ab1f36b28..6f0f1e77c 100644
--- a/src/General/Index.coffee
+++ b/src/General/Index.coffee
@@ -79,6 +79,7 @@ Index =
     @searchInput = $ '#index-search', @navLinks
     @currentPage = @getCurrentPage()
     $.on window, 'popstate', @cb.popstate
+    $.on d, 'scroll', Index.scroll
     $.on @pagelist, 'click', @cb.pageNav
     $.on @searchInput, 'input', @onSearchInput
     $.on $('#index-search-clear', @navLinks), 'click', @clearSearch
@@ -101,6 +102,26 @@ Index =
       $.asap (-> $('.pagelist') or d.readyState isnt 'loading'), ->
         $.replace $('.pagelist'), Index.pagelist
 
+  scroll: $.debounce 100, ->
+    return if Conf['Index Mode'] isnt 'paged' or ((d.body.scrollTop or doc.scrollTop) <= doc.scrollHeight - (300 + window.innerHeight))
+    pageNum = Index.getCurrentPage() + 1
+    return Index.endNotice() if pageNum >= Index.pagesNum
+    nodesPerPage = Index.threadsNumPerPage * 2
+    history.pushState null, '', "/#{g.BOARD}/#{pageNum}"
+    nodes = Index.sortedNodes[nodesPerPage * pageNum ... nodesPerPage * (pageNum + 1)]
+    Index.buildReplies nodes if Conf['Show Replies']
+    $.add Index.root, nodes
+    Index.setPage()
+    
+  endNotice: do ->
+    notify = false
+    reset = -> notify = false
+    return ->
+      return if notify
+      notify = true
+      new Notice 'info', "Last page reached.", 2
+      setTimeout reset, 3 * $.SECOND
+
   cb:
     mode: ->
       Index.togglePagelist()