From 1b977d0c996473a05b8b05785d0ecf4b183034c2 Mon Sep 17 00:00:00 2001
From: Wyatt Greene <techiferous@gmail.com>
Date: Tue, 7 Feb 2012 17:55:31 -0500
Subject: [PATCH] Added support for Twitter Bootstrap (version 2).

---
 CHANGELOG.rdoc                            |  4 ++
 README.rdoc                               | 19 ++++++-
 lib/generators/tabs/templates/tabulous.rb | 30 ++++++++---
 lib/tabulous/options.rb                   |  6 +++
 lib/tabulous/tabulous.rb                  | 62 +++++++++++++++++++++--
 lib/tabulous/version.rb                   |  2 +-
 6 files changed, 109 insertions(+), 14 deletions(-)

diff --git a/CHANGELOG.rdoc b/CHANGELOG.rdoc
index b69da23..5d97f1a 100644
--- a/CHANGELOG.rdoc
+++ b/CHANGELOG.rdoc
@@ -1,3 +1,7 @@
+== 1.2.0 (February 8, 2012)
+* Added support for Twitter Bootstrap (version 2).
+* Noted in the documentation that tabulous works with Rails 3.2.
+
 == 1.1.0 (January 10, 2012)
 * Deprecated the raise_error_if_no_tab_found configuration setting.  Replaced it with
   config.when_action_has_no_tab.
diff --git a/README.rdoc b/README.rdoc
index 6ab5509..180559e 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -6,7 +6,7 @@ Tabulous provides an easy way to add tabs to your Rails application.
 
 == Requirements
 
-Tabulous only works with Rails 3.0 and 3.1.  It has been tested on Ruby 1.8.7 and 1.9.2.
+Tabulous works with Rails 3.0, 3.1 and 3.2.  It has been tested on Ruby 1.8.7 and 1.9.2.
 
 == Usage
 
@@ -66,6 +66,23 @@ There is a tutorial at http://techiferous.com/2011/03/tutorial-for-adding-tabs-t
 Also, look in this gem's test/applications directory to find working example applications.
 Look at their app/tabs/tabulous.rb and app/layouts/application.html.erb files.
 
+== Twitter Bootstrap
+
+To get tabulous to work with Twitter Bootstrap version 2, make sure the
+following values are set in app/tabs/tabulous.rb:
+
+* config.css.scaffolding = false
+* config.tabs_ul_class = "nav nav-pills" # or whatever Bootstrap class you want
+* config.bootstrap_style_subtabs = true
+* config.active_tab_clickable = true
+
+When config.bootstrap_style_subtabs is set to true, the subtabs are rendered
+inside the tab markup, so you only need to call the tabs helper in your
+layout, not the subtabs helper.
+
+Also note that if you use Twitter Bootstrap, you lose the ability to disable
+individual subtabs.
+
 == Contributing
 
 Developers are encouraged to contribute ideas or code.
diff --git a/lib/generators/tabs/templates/tabulous.rb b/lib/generators/tabs/templates/tabulous.rb
index d5b5056..525f0af 100644
--- a/lib/generators/tabs/templates/tabulous.rb
+++ b/lib/generators/tabs/templates/tabulous.rb
@@ -122,9 +122,9 @@
     s <<  '  end'
     Tabulous::Formatter.format(s).join("\n") %>
 
-  #-------------
-  #   OPTIONS
-  #-------------
+  #---------------------
+  #   GENERAL OPTIONS
+  #---------------------
 
   # By default, you cannot click on the active tab.
   config.active_tab_clickable = false
@@ -140,13 +140,28 @@
   # config.when_action_has_no_tab = :render         # the tab navigation HTML will be generated,
                                                     # but no tab or subtab will be active
 
+  #--------------------
+  #   MARKUP OPTIONS
+  #--------------------
+
   # By default, div elements are used in the tab markup.  When html5 is
   # true, nav elements are used instead.
   config.html5 = false
 
-  #------------
-  #   STYLES
-  #------------
+  # This gives you control over what class the <ul> element that wraps the tabs
+  # will have.  Good for interfacing with third-party code like Twitter
+  # Bootstrap.
+  # config.tabs_ul_class = "nav nav-pills"
+
+  # Set this to true to have subtabs rendered in markup that Twitter Bootstrap
+  # understands.  If this is set to true, you don't need to call subtabs in
+  # your layout, just tabs.
+  # config.bootstrap_style_subtabs = true
+
+
+  #-------------------
+  #   STYLE OPTIONS
+  #-------------------
   #
   # The markup that is generated has the following properties:
   #
@@ -161,7 +176,8 @@
   # Some styles will be generated for you to get you off to a good start.
   # Scaffolded styles are not meant to be used in production as they
   # generate invalid HTML markup.  They are merely meant to give you a
-  # head start or an easy way to prototype quickly.
+  # head start or an easy way to prototype quickly.  Set this to false if
+  # you are using Twitter Bootstrap.
   # 
   config.css.scaffolding = true
 
diff --git a/lib/tabulous/options.rb b/lib/tabulous/options.rb
index c5e8a25..f290733 100644
--- a/lib/tabulous/options.rb
+++ b/lib/tabulous/options.rb
@@ -34,6 +34,12 @@ def initialize
   mattr_accessor :html5
   @@html5 = false
 
+  mattr_accessor :tabs_ul_class
+  @@tabs_ul_class = nil
+
+  mattr_accessor :bootstrap_style_subtabs
+  @@bootstrap_style_subtabs = false
+
   def self.raise_error_if_no_tab_found=(value)
     msg = "DEPRECATION WARNING: Tabulous's config.raise_error_if_no_tab_found "
     msg << "has been replaced by config.when_action_has_no_tab. "
diff --git a/lib/tabulous/tabulous.rb b/lib/tabulous/tabulous.rb
index aacf1af..e82effb 100644
--- a/lib/tabulous/tabulous.rb
+++ b/lib/tabulous/tabulous.rb
@@ -20,13 +20,29 @@ def self.render_tabs(view)
     active_tab = active_tab(view)
     active_tab_name = (active_tab ? active_tab.name : nil);
     html << (@@html5 ? '<nav id="tabs">' : '<div id="tabs">')
-    html << '<ul>'
+    if @@tabs_ul_class
+      html << %Q{<ul class="#{@@tabs_ul_class}">}
+    else
+      html << '<ul>'
+    end
     for tab in main_tabs
       next if !tab.visible?(view)
-      html << render_tab(:text => tab.text(view),
-                         :path => tab.path(view),
-                         :active => (active_tab_name && tab.name == active_tab_name),
-                         :enabled => tab.enabled?(view))
+      if @@bootstrap_style_subtabs
+        subtabs = tab.subtabs.select{|subtab| subtab.visible?(view)}
+      end
+      if @@bootstrap_style_subtabs && !subtabs.empty?
+        html << render_dropdown_tab(view,
+                                    :text => tab.text(view),
+                                    :path => tab.path(view),
+                                    :active => (active_tab_name && tab.name == active_tab_name),
+                                    :enabled => tab.enabled?(view),
+                                    :subtabs => subtabs)
+      else
+        html << render_tab(:text => tab.text(view),
+                           :path => tab.path(view),
+                           :active => (active_tab_name && tab.name == active_tab_name),
+                           :enabled => tab.enabled?(view))
+      end
     end
     html << '</ul>'
     html << (@@html5 ? '</nav>' : '</div>')
@@ -34,6 +50,12 @@ def self.render_tabs(view)
   end
   
   def self.render_subtabs(view)
+    if @@bootstrap_style_subtabs
+      raise TabulousError,
+            "You should not call the subtabs view helper when config.bootstrap_style_subtabs " +
+            "is set to true.  Simply call the tabs helper and the subtabs will be " +
+            "automatically rendered."
+    end
     initialize_tabs(view)
     return if !tab_defined?(view) && @@when_action_has_no_tab == :do_not_render
     controller = view.controller_name.to_sym
@@ -73,6 +95,36 @@ def self.render_tab(options)
     html
   end
 
+  # markup spefically tailored for Twitter Bootstrap
+  def self.render_dropdown_tab(view, options)
+    html = ''
+    klass = 'dropdown'
+    klass << (options[:active] ? ' active' : ' inactive')
+    klass << (options[:enabled] ? ' enabled' : ' disabled')
+    html << %Q{<li class="#{klass}">}
+    if (options[:active] && !@@active_tab_clickable) || options[:enabled] == false
+      html << %Q{<span class="tab">#{options[:text]}</span>}
+    else
+      html << %Q{<a class="dropdown-toggle tab"}
+      html << %Q{   data-toggle="dropdown"}
+      html << %Q{   href="#">}
+      html << %Q{#{options[:text]}<b class="caret"></b></a>}
+    end
+    html << '<ul class="dropdown-menu">'
+    for subtab in options[:subtabs]
+      if subtab.enabled?(view)
+        html << '<li class="enabled">'
+      else
+        html << '<li class="disabled">'
+      end
+      html << %Q{<a href="#{subtab.path(view)}">#{subtab.text(view)}</a>}
+      html << '</li>'
+    end
+    html << '</ul>'
+    html << '</li>'
+    html
+  end
+
   def self.initialize_tabs(view)
     if view.respond_to? :instance_exec # for Ruby 1.9
       self.tabs = view.instance_exec(&@@tabs_block)
diff --git a/lib/tabulous/version.rb b/lib/tabulous/version.rb
index 0133237..5674387 100644
--- a/lib/tabulous/version.rb
+++ b/lib/tabulous/version.rb
@@ -1,3 +1,3 @@
 module Tabulous
-  VERSION = "1.1.0"
+  VERSION = "1.2.0"
 end