Instantaneous index page navigation.

Also fix page navigation keybinds.

CHANGELOG.md

@@ -1,12 +1,13 @@
 Index navigation improvements:
  - You can now refresh the index page you are on with the icon in the header bar or the same keybind for refreshing threads.
- - You can now switch between single-page and all-pages navigation via the "Index Navigation" header sub-menu.
+ - You can now switch between paged and all-threads index modes via the "Index Navigation" header sub-menu.
  - Threads in the index can now be sorted by:
-  - bump order
-  - creation date
-  - reply count
-  - file count
-  - last reply
+  - Bump order
+  - Last reply
+  - Creation date
+  - Reply count
+  - File count
+ - Navigating across index pages is now instantaneous.
 
 Added a keybind to open the catalog search field on index pages.
 

css/style.css

@@ -364,8 +364,7 @@ a[href="javascript:;"] {
 
 /* Index */
 :root.index-loading .board,
-:root.index-loading .pagelist,
-:root.index-hide-pagelist .pagelist {
+:root.index-loading .pagelist {
   display: none;
 }
 

html/General/Index-pagelist.html

@@ -1,11 +1,11 @@
 <div class="prev">
   <a>
-    <button>Previous</button>
+    <button disabled>Previous</button>
   </a>
 </div>
 <div class="pages"></div>
 <div class="next">
   <a>
-    <button>Next</button>
+    <button disabled>Next</button>
   </a>
 </div>

src/General/Index.coffee

@@ -2,12 +2,12 @@ Index =
   init: ->
     return if g.VIEW isnt 'index'
 
-    Index.button = $.el 'a',
+    @button = $.el 'a',
       className: 'index-refresh-shortcut fa fa-refresh'
       title: 'Refresh Index'
       href: 'javascript:;'
-    $.on Index.button, 'click', Index.update
-    Header.addShortcut Index.button, 1
+    $.on @button, 'click', @update
+    Header.addShortcut @button, 1
 
     modeEntry =
       el: $.el 'span', textContent: 'Index mode'
@@ -44,11 +44,15 @@ Index =
       subEntries: [modeEntry, sortEntry]
 
     $.addClass doc, 'index-loading'
-    Index.update()
-    Index.root = $.el 'div', className: 'board'
-    Index.pagelist = $.el 'div',
+    @update()
+    @root = $.el 'div', className: 'board'
+    @pagelist = $.el 'div',
       className: 'pagelist'
+      hidden: true
       innerHTML: <%= importHTML('General/Index-pagelist') %>
+    Index.currentPage = +window.location.pathname.split('/')[2]
+    $.on window, 'popstate', @cb.popstate
+    $.on @pagelist, 'click', @cb.pageNav
     $.asap (-> $('.pagelist', doc) or d.readyState isnt 'loading'), ->
       $.replace $('.board'),    Index.root
       $.replace $('.pagelist'), Index.pagelist
@@ -61,9 +65,38 @@ Index =
     sort: ->
       Index.sort()
       Index.buildIndex()
+    popstate: (e) ->
+      Index.currentPage = +window.location.pathname.split('/')[2]
+      Index.pageLoad()
+    pageNav: (e) ->
+      return if e.shiftKey or e.altKey or e.ctrlKey or e.metaKey or e.button isnt 0
+      switch e.target.nodeName
+        when 'BUTTON'
+          a = e.target.parentNode
+        when 'A'
+          a = e.target
+        else
+          return
+      e.preventDefault()
+      Index.pageNav +a.pathname.split('/')[2]
+
+  scrollToIndex: ->
+    Header.scrollTo Index.root if Index.root.getBoundingClientRect().top < 0
+
+  pageNav: (pageNum) ->
+    return if Index.currentPage is pageNum
+    history.pushState null, '', if pageNum is 0 then './' else pageNum
+    Index.currentPage = pageNum
+    Index.pageLoad()
+  pageLoad: ->
+    return unless 'currentPage' of Index # unnecessary popstate on page load
+    return if Conf['Index Mode'] isnt 'paged'
+    Index.buildIndex()
+    Index.setPage()
+    Index.scrollToIndex()
 
   togglePagelist: ->
-    (if Conf['Index Mode'] is 'paged' then $.rmClass else $.addClass) doc, 'index-hide-pagelist'
+    Index.pagelist.hidden = Conf['Index Mode'] isnt 'paged'
   buildPagelist: ->
     pagesRoot = $ '.pages', Index.pagelist
     if pagesRoot.childElementCount isnt Index.pagesNum
@@ -76,6 +109,7 @@ Index =
       $.rmAll pagesRoot
       $.add pagesRoot, nodes
     Index.setPage()
+    Index.togglePagelist()
   setPage: ->
     pageNum   = +window.location.pathname.split('/')[2]
     pagesRoot = $ '.pages', Index.pagelist
@@ -134,7 +168,7 @@ Index =
     notice.el.lastElementChild.textContent = 'Index refreshed!'
     setTimeout notice.close, $.SECOND
 
-    Header.scrollTo Index.root if Index.root.getBoundingClientRect().top < 0
+    Index.scrollToIndex()
   parse: (pages) ->
     Index.parseThreadList pages
     Index.buildAll()

src/Miscellaneous/Keybinds.coffee

@@ -74,17 +74,18 @@ Keybinds =
         Keybinds.img threadRoot, true
       # Board Navigation
       when Conf['Front page']
-        window.location = "/#{g.BOARD}/0#delform"
+        if g.VIEW is 'index'
+          Index.pageNav 0
+        else
+          window.location = "/#{g.BOARD}/"
       when Conf['Open front page']
-        $.open "/#{g.BOARD}/#delform"
+        $.open "/#{g.BOARD}/"
       when Conf['Next page']
-        return if Conf['Index Mode'] isnt 'paged'
-        if form = $ '.next form'
-          window.location = form.action
+        return unless g.VIEW is 'index' and Conf['Index Mode'] is 'paged'
+        $('.next a', Index.pagelist).click()
       when Conf['Previous page']
-        return if Conf['Index Mode'] isnt 'paged'
-        if form = $ '.prev form'
-          window.location = form.action
+        return unless g.VIEW is 'index' and Conf['Index Mode'] is 'paged'
+        $('.prev a', Index.pagelist).click()
       when Conf['Search form']
         $.id('search-btn').click()
       # Thread Navigation