Implemented basic buttons.

lib/addthis.rb

@@ -1,5 +1,49 @@
 module Jaap3
   module AddThisHelper
+    module ClassMethods
+      def addthis_bookmark_button(*args)
+        url, options = extract_url_and_options(args)
+        s = %Q{<a href="http://www.addthis.com/bookmark.php?v=20" onmouseover="return addthis_open(this, '', '#{url}', '#{options[:title]}')" onmouseout="addthis_close()" onclick="return addthis_sendto()">}
+        s << %Q{<img src="http://s7.addthis.com/static/btn/lg-share-en.gif" width="125" height="16" alt="Bookmark and Share" style="border:0"/></a>}
+        addthis_tag(s, options)
+      end
+      alias addthis_share_button addthis_bookmark_button
 
+      def addthis_feed_button(url, *args)
+        options = extract_options(args)
+        s = %Q{<a href="http://www.addthis.com/feed.php?pub=&h1=#{url}&t1=" onclick="return addthis_open(this, 'feed', '#{url}')" alt="Subscribe using any feed reader!" target="_blank">}
+        s << %Q{<img src="http://s7.addthis.com/static/btn/lg-feed-en.gif" width="125" height="16" alt="Subscribe" style="border:0"/></a>}
+        addthis_tag(s, options)
+      end
+
+      def addthis_email_button(*args)
+        url, options = extract_url_and_options(args)
+        s = %Q{<a href="http://www.addthis.com/bookmark.php" style="text-decoration:none;" onclick="return addthis_open(this, 'email', '#{url}', '#{options[:title]}');" >}
+        s << %Q{<img src="http://s7.addthis.com/button1-email.gif" width="54" height="16" border="0" alt="Email" /></a>}
+        addthis_tag(s, options)
+      end
+
+      protected
+      def addthis_tag(str, options = {})
+        s = [%Q{<!-- AddThis Button BEGIN -->}]
+        s << %Q{<script type="text/javascript">var addthis_pub="";</script>} if false
+        s << str
+        s << %Q{<script type="text/javascript" src="http://s7.addthis.com/js/200/addthis_widget.js"></script>}
+        s << %Q{<!-- AddThis Button END -->}
+        s * "\n"
+      end
+
+      def extract_url_and_options(args, options = {:title => "[TITLE]"})
+        url = args[0].is_a?(String) ? args.shift : "[URL]"
+        return url, options = extract_options(args, options)
+      end
+
+      def extract_options(args, options = {})
+        title = args[0].is_a?(String) ? args.shift : options[:title]
+        options = args[0].is_a?(Hash) ? args.shift : options
+        options[:title] = title
+        return options
+      end
+    end
   end
 end

test/addthis_test.rb

@@ -1,5 +1,96 @@
 require 'test_helper'
+include Jaap3::AddThisHelper::ClassMethods
 
 class AddthisTest < Test::Unit::TestCase
 
+  should "be configurable"
+
+  should "provide addthis_bookmark_button" do
+    assert respond_to?(:addthis_bookmark_button)
+  end
+
+  should "alias addthis_bookmark_button as addthis_share_button" do
+    assert respond_to?(:addthis_share_button)
+  end
+
+  should "provide addthis_feed_button" do
+    assert respond_to?(:addthis_feed_button)
+  end
+
+  should "provide addthis_email_button" do
+    assert respond_to?(:addthis_email_button)
+  end
+
+  [:addthis_bookmark_button, :addthis_feed_button, :addthis_email_button].each do |m|
+    context "the output of #{m}" do
+      setup do
+        @output_lines = method(m).call("http://example.com").split("\n")
+      end
+
+      should "start with an html comment" do
+        assert_equal "<!-- AddThis Button BEGIN -->", @output_lines.first
+      end
+
+      should "end with an html comment" do
+        assert_equal "<!-- AddThis Button END -->", @output_lines.last
+      end
+    end
+  end
+
+  context "a bookmark/share tag created without params" do
+    setup do
+      @output = addthis_bookmark_button
+    end
+
+    should "link to http://www.addthis.com/bookmark.php" do
+      assert_match '<a href="http://www.addthis.com/bookmark.php', @output
+    end
+
+    should "set url to [URL]" do
+      assert_match "'[URL]'", @output
+    end
+
+    should "set title to [TITLE]" do
+      assert_match "'[TITLE]'", @output
+    end
+  end
+
+  context "a feed tag" do
+    setup do
+      @output = addthis_feed_button("http://example.com")
+    end
+
+    should "link to http://www.addthis.com/feed.php" do
+      assert_match '<a href="http://www.addthis.com/feed.php', @output
+    end
+
+    should "set h1 param to example.com" do
+      assert_match "&h1=http://example.com", @output
+    end
+
+    should "set url to example.com" do
+      assert_match "'http://example.com')", @output
+    end
+  end
+
+  context "without configuration" do
+    context "a bookmark / share tag" do
+    end
+
+    context "a feed tag" do
+    end
+  end
+
+  context "with configuration" do
+    context "a bookmark / share tag" do
+      should "output bookmark tag with tracking"
+    end
+
+    context "a feed tag" do
+      should "output feed tag with tracking"
+    end
+  end
+
+  should "use secure links"
+
 end