Class: Guilded::BrowserDetector

Inherits:
Object
  • Object
show all
Defined in:
lib/guilded/browser_detector.rb

Overview

The BrowserDetector provides the ability to determine browser information from the user agent string.

Class Method Summary collapse

Class Method Details

.all_browsers ⇒ Object 



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# File 'lib/guilded/browser_detector.rb', line 115

def self.all_browsers
  %W( ie7, ie6, opera, firefox, netscape, konqueror, safari )
end

.all_mobile_browsers ⇒ Object 



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# File 'lib/guilded/browser_detector.rb', line 119

def self.all_mobile_browsers
  %w( ie4_ce )
end

.browser_full_name(request) ⇒ Object

Returns the browser name concatenated with the browser version. for example, ‘ie7’.

Request

  • request - The request object.



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# File 'lib/guilded/browser_detector.rb', line 73

def self.browser_full_name( request )
  browser_name( request ) + browser_version( request )
end

.browser_is?(request, options = {}) ⇒ Boolean

Returns true if the browser matches the options ent in, otherwise returns false.

Request

  • request - The request object.

Options

  • :name - The name of the browser. For example ‘ie’.

  • :version - The version of the browser. For example ‘7’.

Returns:

  • (Boolean) 


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# File 'lib/guilded/browser_detector.rb', line 17

def self.browser_is?( request, options={} )
  #name = name.to_s.strip
  name = options[:name].to_s.strip
  version = options[:version].to_s.strip

  return true if browser_name( request ) == name
  return true if name == 'mozilla' && browser_name( request ) == 'gecko'
  return true if name == 'ie' && browser_name( request ).index( 'ie' )
  return true if name == 'webkit' && browser_name( request ) == 'safari'
end

.browser_name(request) ⇒ Object

Returns the name of the browser that is making this request. For example ‘ie’.

Request

  • request - The request object.



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# File 'lib/guilded/browser_detector.rb', line 33

def self.browser_name( request )
  @browser_name ||= begin
    ua = request.env['HTTP_USER_AGENT']
    if ua.nil?
      'unknown'
    else
      ua = ua.downcase  

      if ua.index( 'msie' ) && !ua.index( 'opera' ) && !ua.index( 'webtv' )
        if ua.index( 'windows ce' )
          'ie' + ua[ua.index( 'msie' ) + 5].chr + '_ce'
        else
          'ie' + ua[ua.index( 'msie' ) + 5].chr
        end
      elsif ua.index( 'netscape' )
        'netscape'
      elsif ua.index( 'gecko/' ) 
        'firefox'
      elsif ua.index( 'opera' )
        'opera'
      elsif ua.index( 'konqueror' ) 
        'konqueror'
      elsif ua.index( 'applewebkit/' )
        'safari'
      elsif ua.index( 'mozilla/' )
        'firefox'
      elsif ua.index( 'firefox' )
        'firefox'
      else
        'unknown'
      end
    end
  end
end

.browser_version(request) ⇒ Object

Returns the version of the browser that is making this request. For example ‘7’.

Request

  • request - The request object.



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# File 'lib/guilded/browser_detector.rb', line 82

def self.browser_version( request )
  @browser_version ||= begin
    ua = request.env['HTTP_USER_AGENT'].downcase

    if browser_name( request ) == 'opera'
      ua[ua.index( 'opera' ) + 6].chr
    elsif browser_name( request ) == 'firefox'
      ua[ua.index( 'firefox' ) + 8 ].chr
    elsif browser_name( request ) == 'netscape'
      ua[ua.index( 'netscape' ) + 9].chr
    elsif browser_name( request ).index( 'ie' )
      ua[ua.index( 'msie' ) + 5].chr
    else
      'unknown'
    end

  end
end

.can_use_png? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/guilded/browser_detector.rb', line 101

def self.can_use_png?
   if browser_name.index( 'ie' ) == 0
	  if browser_version.to_i < 7 
			false
		else
			true
		end
	#elsif browser_name == 'firefox'
	  #	false
	else
		true
	end
end