From 29add2ff1988528a77f1c67446b6f07703f1e9cb Mon Sep 17 00:00:00 2001
From: Nicolas Stepien <stepien.nicolas@gmail.com>
Date: Sat, 1 Sep 2012 00:51:07 +0200
Subject: [PATCH] Add most of Quote Backlinking.

---
 4chan_x.user.js | 56 +++++++++++++++++++++++++++++++++++++++++++--
 script.coffee   | 60 +++++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 112 insertions(+), 4 deletions(-)

diff --git a/4chan_x.user.js b/4chan_x.user.js
index b05ad01b0..522a3ef46 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -73,7 +73,7 @@
  */
 
 (function() {
-  var $, $$, Board, Conf, Config, Main, Post, Quotify, Thread, Time, UI, d, g;
+  var $, $$, Board, Conf, Config, Main, Post, QuoteBacklink, Quotify, Thread, Time, UI, d, g;
 
   Config = {
     main: {
@@ -825,6 +825,13 @@
           $.log(err, 'Resurrect Quotes');
         }
       }
+      if (Conf['Quote Backlinks']) {
+        try {
+          QuoteBacklink.init();
+        } catch (err) {
+          $.log(err, 'Quote Backlinks');
+        }
+      }
       if (Conf['Time Formatting']) {
         try {
           Time.init();
@@ -927,7 +934,6 @@
             textContent: quote
           });
           this.nodes.quotelinks.push(a);
-          $.log(this.nodes.quotelinks, this.quotes);
           nodes.push(a);
           data = data.slice(index + quote.length);
         }
@@ -939,6 +945,52 @@
     }
   };
 
+  QuoteBacklink = {
+    init: function() {
+      var format;
+      format = Conf['backlink'].replace(/%id/g, "' + id + '");
+      this.funk = Function('id', "return '" + format + "'");
+      this.containers = {};
+      Post.prototype.callbacks.push({
+        name: 'Quote Backlinking Part 1',
+        cb: this.firstNode
+      });
+      return Post.prototype.callbacks.push({
+        name: 'Quote Backlinking Part 2',
+        cb: this.secondNode
+      });
+    },
+    firstNode: function() {
+      var a, link, quote, _i, _len, _ref;
+      if (!this.quotes.length) {
+        return;
+      }
+      a = $.el('a', {
+        href: "/" + this.board + "/res/" + this.thread + "#p" + this,
+        className: 'backlink',
+        textContent: QuoteBacklink.funk(this.ID)
+      });
+      _ref = this.quotes;
+      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+        quote = _ref[_i];
+        link = a.cloneNode(true);
+        $.add(QuoteBacklink.getContainer(quote), [$.tn(' '), link]);
+      }
+    },
+    secondNode: function() {
+      if (!(Conf['OP Backlinks'] || this.isReply)) {
+        return;
+      }
+      return $.add(this.nodes.info, QuoteBacklink.getContainer("" + this.board + "." + this));
+    },
+    getContainer: function(id) {
+      var _base;
+      return (_base = this.containers)[id] || (_base[id] = $.el('span', {
+        className: 'container'
+      }));
+    }
+  };
+
   Time = {
     init: function() {
       this.funk = this.createFunc();
diff --git a/script.coffee b/script.coffee
index bdcbf1a3e..96749de8d 100644
--- a/script.coffee
+++ b/script.coffee
@@ -661,6 +661,13 @@ Main =
         # XXX handle error
         $.log err, 'Resurrect Quotes'
 
+    if Conf['Quote Backlinks']
+      try
+        QuoteBacklink.init()
+      catch err
+        # XXX handle error
+        $.log err, 'Quote Backlinks'
+
     if Conf['Time Formatting']
       try
         Time.init()
@@ -770,7 +777,7 @@ Quotify =
       name: 'Resurrect Quotes'
       cb:   @node
   node: ->
-    # return if post.isInlined and not post.isCrosspost
+    # XXX return if post.isInlined and not post.isCrosspost
 
     # XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE is 6
     # Get all the text nodes that are not inside an anchor.
@@ -825,7 +832,6 @@ Quotify =
         #     a.setAttribute 'data-id',    ID
 
         @nodes.quotelinks.push a
-        $.log @nodes.quotelinks, @quotes
         nodes.push a
         data = data[index + quote.length..]
 
@@ -836,6 +842,56 @@ Quotify =
       $.replace node, nodes
     return
 
+QuoteBacklink =
+  # Backlinks appending need to work for:
+  #  - previous, same, and following posts.
+  #  - existing and yet-to-exist posts.
+  #  - newly fetched posts.
+  #  - in copies.
+  # XXX what about order for fetched posts?
+  # XXX need to work on post copying first before appending inside copies too
+  #
+  # First callback creates backlinks and add them to relevant containers.
+  # Second callback adds relevant containers into posts.
+  # This is is so that fetched posts can get their backlinks,
+  # and that as much backlinks are appended in the background as possible.
+  init: ->
+    format = Conf['backlink'].replace /%id/g, "' + id + '"
+    @funk  = Function 'id', "return '#{format}'"
+    @containers = {}
+    Post::callbacks.push
+      name: 'Quote Backlinking Part 1'
+      cb:   @firstNode
+    Post::callbacks.push
+      name: 'Quote Backlinking Part 2'
+      cb:   @secondNode
+  firstNode: ->
+    # XXX return if post.isInlined
+    return unless @quotes.length
+    a = $.el 'a',
+      href: "/#{@board}/res/#{@thread}#p#{@}"
+      # XXX className: if post.el.hidden then 'filtered backlink' else 'backlink'
+      className: 'backlink'
+      textContent: QuoteBacklink.funk @ID
+    for quote in @quotes
+      link = a.cloneNode true
+      # XXX
+      # if Conf['Quote Preview']
+      #   $.on link, 'mouseover', QuotePreview.mouseover
+      # if Conf['Quote Inline']
+      #   $.on link, 'click', QuoteInline.toggle
+      # else
+      #   link.setAttribute 'onclick', "replyhl('#{post.ID}');"
+      $.add QuoteBacklink.getContainer(quote), [$.tn(' '), link]
+    return
+  secondNode: ->
+    # Don't backlink the OP.
+    return unless Conf['OP Backlinks'] or @isReply
+    $.add @nodes.info, QuoteBacklink.getContainer "#{@board}.#{@}"
+  getContainer: (id) ->
+    @containers[id] or=
+      $.el 'span', className: 'container'
+
 Time =
   init: ->
     @funk = @createFunc()