Source Code for Module ZenWidgets.Portlet

 1  ########################################################################### 
 2  # 
 3  # This program is part of Zenoss Core, an open source monitoring platform. 
 4  # Copyright (C) 2007, Zenoss Inc. 
 5  # 
 6  # This program is free software; you can redistribute it and/or modify it 
 7  # under the terms of the GNU General Public License version 2 as published by 
 8  # the Free Software Foundation. 
 9  # 
10  # For complete information please visit: http://www.zenoss.com/oss/ 
11  # 
12  ########################################################################### 
13   
14  from Products.ZenModel.ZenossSecurity import * 
15  from os.path import basename, exists 
16  from Products.ZenRelations.RelSchema import * 
17  from OFS.SimpleItem import SimpleItem 
18  from OFS.PropertyManager import PropertyManager 
19  from Products.ZenModel.ZenModelRM import ZenModelRM 
20  from Globals import InitializeClass, DevelopmentMode 
21   
22 -class PortletSourceNotFound(Exception): pass 
23   
24 -def manage_addPortlet(self, context, REQUEST=None): 
25      """ 
26      Add a portlet. 
27      """ 
28      pass 
29   
30 -class Portlet(ZenModelRM): 
31      """ 
32      A wrapper for a portlet javascript source file that can include metadata 
33      such as a name, a title, a description and permissions. 
34   
35      Portlets should not be instantiated directly. They should only be created 
36      by a PortletManager object. 
37      """ 
38      source = '' 
39   
40      portal_type = meta_type = 'Portlet' 
41   
42      _relations = ( 
43          ("portletManager", ToOne( 
44              ToManyCont, "Products.ZenWidgets.PortletManager", "portlets")), 
45      ) 
46   
47      _properties = ( 
48          {'id':'title','type':'string','mode':'w'}, 
49          {'id':'description', 'type':'string', 'mode':'w'}, 
50          {'id':'permission', 'type':'string', 'mode':'w'}, 
51          {'id':'sourcepath', 'type':'string', 'mode':'w'}, 
52          {'id':'preview', 'type':'string', 'mode':'w'}, 
53      ) 
54   
55 -    def __init__(self, sourcepath, id='', title='', description='',  
56                   preview='', permission=ZEN_COMMON): 
57          if not id: id = basename(sourcepath).split('.')[0] 
58          self.id = id 
59          ZenModelRM.__init__(self, id) 
60          self.title = title 
61          self.description = description 
62          self.permission = permission 
63          self.sourcepath = sourcepath 
64          self.preview = preview 
65          self._read_source() 
66   
67 -    def check(self): 
68          return exists(self.sourcepath) 
69   
70 -    def _read_source(self): 
71          try: 
72              f = file(self.sourcepath) 
73          except IOError, e: 
74              raise PortletSourceNotFound, e 
75          self.source = f.read() 
76          f.close() 
77   
78 -    def get_source(self, debug_mode=False): 
79          if debug_mode: self._read_source() 
80          src = [] 
81          src.append(self.source) 
82          src.append("YAHOO.zenoss.portlet.register_portlet('%s', '%s');" % ( 
83              self.id, self.title)) 
84          return '\n'.join(src) 
85   
86  InitializeClass(Portlet) 
87