Class: URL

Inherits:
Object show all
Includes:
ReactiveTags
Defined in:
lib/volt/models/url.rb

Overview

The url class handles parsing and updating the url

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from ReactiveTags

included, #reactive_method_tag

Constructor Details

#initialize(router = nil) ⇒ URL

Returns a new instance of URL.



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# File 'lib/volt/models/url.rb', line 9

def initialize(router=nil)
  @router = router
  @params = Model.new({}, persistor: Persistors::Params)
end

Instance Attribute Details

#host ⇒ Object (readonly)

TODO: we need to make it so change events only trigger on changes



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# File 'lib/volt/models/url.rb', line 6

def host
  @host
end

#params ⇒ Object (readonly)

TODO: we need to make it so change events only trigger on changes



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# File 'lib/volt/models/url.rb', line 6

def params
  @params
end

#path ⇒ Object (readonly)

TODO: we need to make it so change events only trigger on changes



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# File 'lib/volt/models/url.rb', line 6

def path
  @path
end

#port ⇒ Object (readonly)

TODO: we need to make it so change events only trigger on changes



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# File 'lib/volt/models/url.rb', line 6

def port
  @port
end

#query ⇒ Object (readonly)

TODO: we need to make it so change events only trigger on changes



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# File 'lib/volt/models/url.rb', line 6

def query
  @query
end

#router ⇒ Object

Returns the value of attribute router.



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# File 'lib/volt/models/url.rb', line 7

def router
  @router
end

#scheme ⇒ Object (readonly)

TODO: we need to make it so change events only trigger on changes



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# File 'lib/volt/models/url.rb', line 6

def scheme
  @scheme
end

Instance Method Details

#full_url ⇒ Object

Full url rebuilds the url from it’s constituent parts



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# File 'lib/volt/models/url.rb', line 56

def full_url
  if @port
    host_with_port = "#{@host}:#{@port}"
  else
    host_with_port = @host
  end

  path, params = @router.url_for_params(@params)

  new_url = "#{@scheme}://#{host_with_port}#{(path || @path).chomp('/')}"

  unless params.empty?
    new_url += '?'
    query_parts = []
    nested_params_hash(params).each_pair do |key,value|
      value = value.cur
      # remove the _ from the front
      value = `encodeURI(value)`
      query_parts << "#{key}=#{value}"
    end

    new_url += query_parts.join('&')
  end

  new_url += '#' + @fragment if @fragment

  return new_url
end

#parse(url) ⇒ Object 



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# File 'lib/volt/models/url.rb', line 19

def parse(url)
  if url[0] == '#'
    # url only updates fragment
    @fragment = url[1..-1]
    update!
  else
    host = `document.location.host`

    if url[0..3] != 'http'
      # Add the host for localized names
      url = "http://#{host}" + url
    else
      # Make sure its on the same host, otherwise its external.
      if url !~ /https?[:]\/\/#{host}/
        # Different host, don't process
        return false
      end
    end

    matcher = url.match(/^(https?)[:]\/\/([^\/]+)(.*)$/)
    @scheme = matcher[1]
    @host, @port = matcher[2].split(':')
    @port ||= 80

    @path = matcher[3]
    @path, @fragment = @path.split('#', 2)
    @path, @query = @path.split('?', 2)

    assign_query_hash_to_params
  end

  scroll

  return true
end

#scroll ⇒ Object 



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# File 'lib/volt/models/url.rb', line 98

def scroll
  if Volt.client?
    if @fragment
      # Scroll to anchor via http://www.w3.org/html/wg/drafts/html/master/browsers.html#scroll-to-fragid
      %x{
        var anchor = $('#' + this.fragment);
        if (anchor.length == 0) {
          anchor = $('*[name="' + this.fragment + '"]:first');
        }
        console.log('found anchor: ', anchor);
        if (anchor && anchor.length > 0) {
          $(document.body).scrollTop(anchor.offset().top);
        }
      }
    else
      # Scroll to the top by default
      `$(document.body).scrollTop(0);`
    end
  end
end

#update! ⇒ Object

Called when the state has changed and the url in the browser should be updated Called when an attribute changes to update the url



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# File 'lib/volt/models/url.rb', line 88

def update!
  if Volt.client?
    new_url = full_url()

    if `(document.location.href != new_url)`
      `history.pushState(null, null, new_url)`
    end
  end
end