sugar-toolkit-gtk3/services/console/interface/memphis/memphis.py

#!/usr/bin/env python

# Copyright (C) 2006, Eduardo Silva (edsiper@gmail.com).
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

import sys
import os
import string
import wnck
import plugin

from procmem import proc

try:
    import gtk
    import gtk.gdk
    import gobject
except:
    sys.exit(1)

class Interface:

    store_data_types = []
    store_data_types_details = []

    def __init__(self):
        
        # Our GtkTree (Treeview)
        self.treeview = gtk.TreeView()
        self.treeview.show()
    
        self.button_start = gtk.Button('Start Memphis')
        self.button_stop = gtk.Button('Stop Memphis')

        fixed = gtk.Fixed()
        fixed.add(self.button_start)
        fixed.add(self.button_stop)

        vbox = gtk.VBox(False)
        vbox.set_border_width(5)
        vbox.pack_start(fixed, True, True, 0)
        
        # Our GtkTree (Treeview)
        self.treeview = gtk.TreeView()
        t_width = gtk.gdk.screen_width()
        t_height = gtk.gdk.screen_height() * 83 / 100
    
        self.treeview.set_size_request(t_width, t_height)
        vbox.pack_start(self.treeview, True, True, 0)
        vbox.show_all()
        self.widget = vbox

        # Loading plugins
        self.plg = plugin.Plugin()

        # TOP data types (columns)
        self.store_data_types = []
        
        for plg in self.plg.list:
            plg_data = plg.INTERNALS

            # Give plugin object to plugin
            plg.INTERNALS['Plg'] = self.plg

        # Creating a store model and loading process data to Treeview
        # self.store_data_types, ex [int, str, str, str, int,...]
        #self.store = gtk.TreeStore(*self.store_data_types)
        self.data = Data(self, self.treeview, self.plg.list)

        self.button_stop.hide()
        self.button_start.connect('clicked', self.data._start_memphis)
        self.button_stop.connect('clicked', self.data._stop_memphis)
    
class Data:

    last_col_index = 0

    store_data_cols = []
    store_data_types = []
    store_data_types_details = []
    
    _running_status = False

    def __init__(self, interface, treeview, plg_list):

        self.interface = interface 
    
        # Top data types
        self.plg_list = plg_list

        for plg in self.plg_list:

            if plg.INTERNALS['top_data'] != None:
                last_dt = len(self.store_data_types)

                if last_dt > 0:
                    last_dt -= 1

                len_dt = len(plg.INTERNALS['top_data'])

                self.store_data_types_details.append({"plugin": plg, "init": last_dt, "end": last_dt + len_dt})
                
                for dt in plg.INTERNALS['top_data']:
                    self.store_data_types.append(dt)

                for col in plg.INTERNALS['top_cols']:
                    self.store_data_cols.append(col)

        # Set global treeview
        self.treeview = treeview

        # Basic columns 
        index = 0
        for column_name in self.store_data_cols:
            self.add_column(column_name, index)
            index += 1

        self.store = gtk.TreeStore(*self.store_data_types)
        treeview.set_model(self.store)

    def _start_memphis(self, button):

        # Update information every 1.5 second
        button.hide()
        self.interface.button_stop.show()
        self._running_status = True
        gobject.timeout_add(1500, self.load_data, self.treeview)

    def _stop_memphis(self, button):

        self._running_status = False
        button.hide()
        self.interface.button_start.show()

    # Add a new column to the main treeview 
    def add_column(self, column_name, index):
        cell = gtk.CellRendererText()
        col_tv = gtk.TreeViewColumn(column_name, cell, text=index)
        col_tv.set_resizable(True)
        col_tv.connect('clicked', self.sort_column_clicked)
        col_tv.set_property('clickable', True)

        self.treeview.append_column(col_tv)

        # Set the last column index added
        self.last_col_index = index

    # Sorting 
    def sort_column_clicked(self, TreeViewColumn):
        cols = self.treeview.get_columns()

        # Searching column index
        index = 0
        for col in cols:
            if col == TreeViewColumn:
                break

            index += 1

        self.store.set_sort_column_id(index, gtk.SORT_DESCENDING)
        
    def load_data(self, treeview):
        self.store.clear()

        # Getting procfs data
        self.procdata = proc.ProcInfo()
        self.process_list = []
        
        pids = []
        screen = wnck.screen_get_default()
        windows =  screen.get_windows()

        current_pid = os.getpid()

        for win in windows:
            pid = int(win.get_pid())
            if current_pid != pid:
                pids.append(pid)

        self.process_list = set(pids)

        # Sort rows using pid
        #self.process_list.sort(key=operator.itemgetter('pid'))
        self.process_iter = []

        for pid in self.process_list:
            pi = self.build_row(self.store, None, self.procdata, pid)
            self.process_iter.append(pi)

        treeview.set_rules_hint(True)
        treeview.expand_all()

        return self._running_status
    
    def build_row(self, store, parent_iter, proc_data, pid):
        data = []

        pinfo = proc_data.MemoryInfo(pid)
            
        # Look for plugins that need to update the top data treeview
        for plg in self.plg_list:
            plg_data = []

            if plg.INTERNALS['top_data'] != None:
                # data = [xxx, yyy,zzz,...]
                plg_data = plg.info.plg_on_top_data_refresh(plg, pinfo)

            for field in plg_data:
                data.append(field)

        pi = self.insert_row(store, parent_iter, data)

        return pi

    # Insert a Row in our TreeView
    def insert_row(self, store, parent, row_data):
        iter = store.insert_after(parent, None)

        index = 0

        for data in row_data:
            store.set_value(iter, index , data)
            index += 1

        return iter