amahi/platform

# Tab management for the setup area

class Tab

    attr_accessor :id, :label, :url, :subtabs, :advanced

    class << self
        def all
            AmahiHDA::Application.config.tabs
        end
    end

    # controller has the name of the controller (or action in subtabs) this
    #   tab is associated with, e.g. 'users'
    # label is what shows to the user (no localization support yet),
    #   e.g. Users
    # url is what full-url this tab is hooked to, e.g. '/tab/users'
    # parent is the id (controller) of the parent tab
    def initialize(controller, label, url, parent = nil, advanced = false)
        # keep stat with all existing tabs
        self.id = controller
        self.label = label
        self.url = url
        self.subtabs = []
        self.advanced = advanced
        push(self) unless parent
    end

    # add a subtab, with a relative url and the label for it
    # advanced is only reported
    def add(action, label, advanced = false)
        u = (action == 'index') ? self.url : "#{self.url}/#{action}"
        subtabs << Tab.new(action, label, u, self.id, advanced)
    end

    def subtabs?
        subtabs.size != 0
    end

    def basic_subtabs
        subtabs.reject { |s| s.advanced }
    end

    def advanced_subtabs
        subtabs
    end

    # Return the Tab(if exists) with id:contoller. Otherwise creates a new Tab
    def self.find_or_create(controller, label, url)
        tabs = self.find(controller)
        if tabs==nil
         tabs = Tab.new(controller, label, url)
        end
        tabs
    end

    #Returns Tab with id:controller
    def self.find(controller)
        tabs = []
        AmahiHDA::Application.config.tabs.each do |tab|
            if tab.id==controller
                tabs << tab
                break
            end
        end
        tabs.first
    end

    #checks if tab has a subtab with id:controller
    def self.ischild(controller,tab)
        child = false
        if tab.subtabs?
            tab.subtabs.each do |subtab|
                if(subtab.id == controller)
                    child = true
                    break
                end
            end
        end
        child
    end

    private

    # keep top-level tabs in an app variable, due to complex initialzation issues
    # if we edit files in development, rails will clobber class variables
    def push(element)
        AmahiHDA::Application.config.tabs << element
    end

end