python/historyplacement.py

   1 ##############################################################################
   2 ### The history window placement algorithm. ebind historyplacement.place   ###
   3 ### to the ob.EventAction.PlaceWindow event to use it.                     ###
   4 ##############################################################################
   5
   6 import windowplacement, config, hooks
   7
   8 def place(data):
   9     """Place a window usingthe history placement algorithm."""
  10     _place(data)
  11
  12 export_functions = place
  13
  14 ##############################################################################
  15
  16 config.add('historyplacement',
  17            'ignore_requested_positions',
  18            'Ignore Requested Positions',
  19            "When true, the placement algorithm will attempt to place " + \
  20            "windows even when they request a position (like XMMS can)." + \
  21            "Note this only applies to 'normal' windows, not to special " + \
  22            "cases like desktops and docks.",
  23            'boolean',
  24            0)
  25 config.add('historyplacement',
  26            'dont_duplicate',
  27            "Don't Diplicate",
  28            "When true, if 2 copies of the same match in history are to be " + \
  29            "placed before one of them is closed (so it would be placed " + \
  30            "over-top of the last one), this will cause the second window to "+\
  31            "not be placed via history, and the 'Fallback Algorithm' will be "+\
  32            "used instead.",
  33            'boolean',
  34            1)
  35 config.add('historyplacement',
  36            'filename',
  37            'History Database Filename',
  38            "The name of the file where history data will be stored. The " + \
  39            "number of the screen is appended onto this name. The file will " +\
  40            "be placed in ~/.openbox/.",
  41            'string',
  42            'historydb')
  43 config.add('historyplacement',
  44            'fallback',
  45            'Fallback Algorithm',
  46            "The window placement algorithm that will be used when history " + \
  47            "placement does not have a place for the window.",
  48            'enum',
  49            windowplacement.random,
  50            options = windowplacement.export_functions)
  51
  52 ###########################################################################
  53
  54 ###########################################################################
  55 ###      Internal stuff, should not be accessed outside the module.     ###
  56 ###########################################################################
  57
  58 import ob, os, string
  59
  60 _data = []
  61
  62 class _State:
  63     def __init__(self, resname, resclass, role, x, y):
  64         self.resname = resname
  65         self.resclass = resclass
  66         self.role = role
  67         self.x = x
  68         self.y = y
  69         self.placed = 0
  70     def __eq__(self, other):
  71         if self.resname == other.resname and \
  72            self.resclass == other.resclass and \
  73            self.role == other.role:
  74             return 1
  75         return 0
  76
  77 def _load():
  78     global _data
  79     try:
  80         file = open(os.environ['HOME'] + '/.openbox/' + \
  81                     config.get('historyplacement', 'filename') + \
  82                     "." + str(ob.Openbox.screenNumber()), 'r')
  83         # read data
  84         for line in file.readlines():
  85             line = line[:-1] # drop the '\n'
  86             try:
  87                 s = string.split(line, '\0')
  88                 state = _State(s[0], s[1], s[2],
  89                                int(s[3]), int(s[4]))
  90
  91                 _data.append(state)
  92
  93             except ValueError: pass
  94             except IndexError: pass
  95         file.close()
  96     except IOError: pass
  97
  98 def _save():
  99     file = open(os.environ['HOME'] + '/.openbox/'+ \
 100                 config.get('historyplacement', 'filename') + \
 101                 "." + str(ob.Openbox.screenNumber()), 'w')
 102     if file:
 103         for i in _data:
 104             file.write(i.resname + '\0' +
 105                        i.resclass + '\0' +
 106                        i.role + '\0' +
 107                        str(i.x) + '\0' +
 108                        str(i.y) + '\n')
 109         file.close()
 110
 111 def _create_state(client):
 112     area = client.area()
 113     return _State(client.resName(), client.resClass(),
 114                   client.role(), area[0], area[1])
 115
 116 def _place(client):
 117     state = _create_state(client)
 118     try:
 119         print "looking for : " + state.resname +  " : " + \
 120               state.resclass + " : " + state.role
 121         try:
 122             i = _data.index(state)
 123         except ValueError:
 124             print "No match in history"
 125         else:
 126             coords = _data[i] # get the equal element
 127             print "Found in history ("+str(coords.x)+","+\
 128                   str(coords.y)+")"
 129             if not (config.get('historyplacement', 'dont_duplicate') \
 130                     and coords.placed):
 131                 coords.placed = 1
 132                 if ob.Openbox.state() != ob.State.Starting:
 133 #    if not (config.get('historyplacement', 'ignore_requested_positions') \
 134 #            and data.client.normal()):
 135 #        if data.client.positionRequested(): return
 136                     ca = client.area()
 137                     client.setArea((coords.x, coords.y, ca[2], ca[3]))
 138                 return
 139             else:
 140                 print "Already placed another window there"
 141     except TypeError:
 142         pass
 143     fallback = config.get('historyplacement', 'fallback')
 144     if fallback: fallback(client)
 145
 146 def _save_window(client):
 147     global _data
 148     state = _create_state(client)
 149     print "looking for : " + state.resname +  " : " + state.resclass + \
 150           " : " + state.role
 151
 152     try:
 153         print "replacing"
 154         i = _data.index(state)
 155         _data[i] = state # replace it
 156     except ValueError:
 157         print "appending"
 158         _data.append(state)
 159
 160 hooks.startup.append(_load)
 161 hooks.shutdown.append(_save)
 162 hooks.closed.append(_save_window)
 163
 164 print "Loaded historyplacement.py"