1 files changed, 133 insertions, 0 deletions
diff --git a/app/helpers/gitlab/tab_helper.rb b/app/helpers/gitlab/tab_helper.rb
new file mode 100644
index 00000000000..01d36ff84fc
--- /dev/null
+++ b/app/helpers/gitlab/tab_helper.rb
@@ -0,0 +1,133 @@
+module Gitlab
+  module TabHelper
+    # Navigation link helper
+    #
+    # Returns an `li` element with an 'active' class if the supplied
+    # controller(s) and/or action(s) are currently active. The content of the
+    # element is the value passed to the block.
+    #
+    # options - The options hash used to determine if the element is "active" (default: {})
+    #           :controller   - One or more controller names to check (optional).
+    #           :action       - One or more action names to check (optional).
+    #           :path         - A shorthand path, such as 'dashboard#index', to check (optional).
+    #           :html_options - Extra options to be passed to the list element (optional).
+    # block   - An optional block that will become the contents of the returned
+    #           `li` element.
+    #
+    # When both :controller and :action are specified, BOTH must match in order
+    # to be marked as active. When only one is given, either can match.
+    #
+    # Examples
+    #
+    #   # Assuming we're on TreeController#show
+    #
+    #   # Controller matches, but action doesn't
+    #   nav_link(controller: [:tree, :refs], action: :edit) { "Hello" }
+    #   # => '<li>Hello</li>'
+    #
+    #   # Controller matches
+    #   nav_link(controller: [:tree, :refs]) { "Hello" }
+    #   # => '<li class="active">Hello</li>'
+    #
+    #   # Several paths
+    #   nav_link(path: ['tree#show', 'profile#show']) { "Hello" }
+    #   # => '<li class="active">Hello</li>'
+    #
+    #   # Shorthand path
+    #   nav_link(path: 'tree#show') { "Hello" }
+    #   # => '<li class="active">Hello</li>'
+    #
+    #   # Supplying custom options for the list element
+    #   nav_link(controller: :tree, html_options: {class: 'home'}) { "Hello" }
+    #   # => '<li class="home active">Hello</li>'
+    #
+    # Returns a list item element String
+    def nav_link(options = {}, &block)
+      klass = active_nav_link?(options) ? 'active' : ''
+
+      # Add our custom class into the html_options, which may or may not exist
+      # and which may or may not already have a :class key
+      o = options.delete(:html_options) || {}
+      o[:class] ||= ''
+      o[:class] += ' ' + klass
+      o[:class].strip!
+
+      if block_given?
+        content_tag(:li, capture(&block), o)
+      else
+        content_tag(:li, nil, o)
+      end
+    end
+
+    def active_nav_link?(options)
+      if path = options.delete(:path)
+        unless path.respond_to?(:each)
+          path = [path]
+        end
+
+        path.any? do |single_path|
+          current_path?(single_path)
+        end
+      elsif page = options.delete(:page)
+        unless page.respond_to?(:each)
+          page = [page]
+        end
+
+        page.any? do |single_page|
+          current_page?(single_page)
+        end
+      else
+        c = options.delete(:controller)
+        a = options.delete(:action)
+
+        if c && a
+          # When given both options, make sure BOTH are true
+          current_controller?(*c) && current_action?(*a)
+        else
+          # Otherwise check EITHER option
+          current_controller?(*c) || current_action?(*a)
+        end
+      end
+    end
+
+    def current_path?(path)
+      c, a, _ = path.split('#')
+      current_controller?(c) && current_action?(a)
+    end
+
+    def project_tab_class
+      return "active" if current_page?(controller: "/projects", action: :edit, id: @project)
+
+      if ['services', 'hooks', 'deploy_keys', 'protected_branches'].include? controller.controller_name
+        "active"
+      end
+    end
+
+    def branches_tab_class
+      if current_controller?(:protected_branches) ||
+        current_controller?(:branches) ||
+        current_page?(namespace_project_repository_path(@project.namespace,
+                                                        @project))
+        'active'
+      end
+    end
+
+    # Use nav_tab for save controller/action  but different params
+    def nav_tab(key, value, &block)
+      o = {}
+      o[:class] = ""
+
+      if value.nil?
+        o[:class] << " active" if params[key].blank?
+      else
+        o[:class] << " active" if params[key] == value
+      end
+
+      if block_given?
+        content_tag(:li, capture(&block), o)
+      else
+        content_tag(:li, nil, o)
+      end
+    end
+  end
+end