Source Code for Module concurrent_tree_crawler.html_multipage_navigator.web_browser

 1  import mechanize 
 2   
 3 -class AbstractWebBrowser: 
 4          """An abstract functionality of a web browser""" 
 5           
 6 -        def open(self, address): 
 7                  """Open a web page with a given address""" 
 8                  raise NotImplementedError 
 9           
10 -        def response(self): 
11                  """ 
12                  Return a copy of the currently opened web page 
13   
14                  @rtype: file-like object 
15                  """ 
16                  raise NotImplementedError 
17           
18 -        def back(self, steps=1): 
19                  """Go back C{steps} steps in history""" 
20                  raise NotImplementedError 
21   
22 -class AbstractWebBrowserCreator: 
23          """The 'Creator' class from the Factory Method design pattern""" 
24           
25 -        def create(self): 
26                  """ 
27                  Create a browser. This method has to be thread-safe since it is  
28                  called as the method of the same object in different threads. 
29                   
30                  @rtype: L{AbstractWebBrowser} 
31                  """ 
32                  raise NotImplementedError 
33   
34   
35 -class MechanizeBrowser(AbstractWebBrowser): 
36          """The default browser. It uses C{mechanize} library""" 
37   
38 -        def __init__(self): 
39                  self.__br = mechanize.Browser() 
40           
41 -        def open(self, address): 
42                  self.__br.open(address) #PyLint ignore unneeded warning: IGNORE:E1102 
43           
44 -        def response(self): 
45                  return self.__br.response() #PyLint ignore unneeded warning: IGNORE:E1102 
46           
47 -        def back(self, steps=1): 
48                  self.__br.back(steps) #PyLint ignore unneeded warning: IGNORE:E1102 
49   
50 -class MechanizeBrowserCreator(AbstractWebBrowserCreator): 
51 -        def create(self): 
52                  return MechanizeBrowser() 
53