Geografic-Information-System/gui/wxpython/gui_modules/preferences.py

"""
@package preferences

@brief User preferences dialog

Sets default display font, etc.

Classes:
 - PreferencesDialog
 - SetDefaultFont
 - MapsetAccess

(C) 2007-2008 by the GRASS Development Team
This program is free software under the GNU General Public
License (>=v2). Read the file COPYING that comes with GRASS
for details.

@author Michael Barton (Arizona State University)
Martin Landa <landa.martin gmail.com>
"""

import os
import sys
import copy
import stat
if os.name in ('posix', 'mac'):
    import pwd

import wx
import wx.lib.filebrowsebutton as filebrowse
import wx.lib.colourselect as csel
import wx.lib.mixins.listctrl as listmix
from wx.lib.wordwrap import wordwrap

import gcmd
import grassenv
import utils
import globalvar
from debug import Debug as Debug

class Settings:
    """Generic class where to store settings"""
    def __init__(self):
        #
        # settings filename
        #
        self.fileName = ".grasswx"
        self.filePath = None

        #
        # default settings
        #
        self.defaultSettings = {
            #
            # general
            #
            'general': {
                # current mapset search path
                'mapsetPath'  : { 'selection' : 0 }, 
                # use default window layout (layer manager, displays, ...)
                'defWindowPos' : { 'enabled' : False, 'dim' : '' },
                },
            'manager' : {
                # show opacity level widget
                'changeOpacityLevel' : { 'enabled' : False }, 
                # ask when removing layer from layer tree
                'askOnRemoveLayer' : { 'enabled' : True },
                },
            #
            # display
            #
            'display': {
                'displayFont' : { 'value' : '' },
                'driver': { 'type': 'default' },
                'compResolution' : { 'enabled' : False },
                'autoRendering': { 'enabled' : False },
                'statusbarMode': { 'selection' : 0 },
                },
            #
            # advanced
            #
            'advanced' : {
                'settingsFile'   : { 'type' : 'gisdbase' }, # gisdbase, location, mapset
                'digitInterface' : { 'type' : 'vdigit' }, # vedit, vdigit
                'iconTheme'      : { 'type' : 'silk' }, # grass, silk
                },
            #
            # Attribute Table Manager
            #
            'atm' : {
                'highlight' : { 'color' : (255, 255, 0, 255), 'width' : 2},
                'leftDbClick' : { 'selection' : 0 },
            },
            #
            # Command
            #
            'cmd': {
                'overwrite' : { 'enabled' : False },
                'closeDlg' : { 'enabled' : False },
                'verbosity' : { 'selection' : 'grassenv' },
                'rasterOverlay' : { 'enabled' : False },
                },
            #
            # Workspace
            #
            'workspace' : {
                'posDisplay' : { 'enabled' : False },
                'posManager' : { 'enabled' : False },
                },
            #
            # vdigit
            #
            'vdigit' : {
                # symbology
                'symbolHighlight'   : { 'enabled' : None,  'color' : (255, 255, 0, 255) }, # yellow
                'symbolHighlightDupl' : { 'enabled' : None,  'color' : (255, 72, 0, 255) }, # red
                'symbolPoint'       : { 'enabled' : True,  'color' : (0, 0, 0, 255) }, # black
                'symbolLine'        : { 'enabled' : True,  'color' : (0, 0, 0, 255) }, # black
                'symbolBoundaryNo'  : { 'enabled' : True,  'color' : (126, 126, 126, 255) }, # grey
                'symbolBoundaryOne' : { 'enabled' : True,  'color' : (0, 255, 0, 255) }, # green
                'symbolBoundaryTwo' : { 'enabled' : True,  'color' : (255, 135, 0, 255) }, # orange
                'symbolCentroidIn'  : { 'enabled' : True,  'color' : (0, 0, 255, 255) }, # blue
                'symbolCentroidOut' : { 'enabled' : True,  'color' : (165, 42, 42, 255) }, # brown
                'symbolCentroidDup' : { 'enabled' : True,  'color' : (156, 62, 206, 255) }, # violet
                'symbolNodeOne'     : { 'enabled' : True,  'color' : (255, 0, 0, 255) }, # red
                'symbolNodeTwo'     : { 'enabled' : True,  'color' : (0, 86, 45, 255) }, # dark green
                'symbolVertex'      : { 'enabled' : False, 'color' : (255, 20, 147, 255) }, # deep pink
                # display
                'lineWidth' : { 'value' : 2, 'units' : 'screen pixels' },
                # snapping
                'snapping' : { 'value' : 10, 'units' : 'screen pixels' },
                'snapToVertex' : { 'enabled' : False },
                'backgroundMap' : {'value' : ''},
                # digitize new record
                'addRecord' : { 'enabled' : True },
                'layer' : {'value' : 1 },
                'category' : {'value' : 1 },
                'categoryMode' : {'selection' : 0 },
                # delete existing feature(s)
                'delRecord' : { 'enabled' : True },
                # query tool
                'query'       : { 'selection' : 0, 'box' : True },
                'queryLength' : { 'than-selection' : 0, 'thresh' : 0 },
                'queryDangle' : { 'than-selection' : 0, 'thresh' : 0 },
                # select feature (point, line, centroid, boundary)
                'selectFeaturePoint'    : { 'enabled' : True },
                'selectFeatureLine'     : { 'enabled' : True },
                'selectFeatureCentroid' : { 'enabled' : True },
                'selectFeatureBoundary' : { 'enabled' : True },
                'selectThresh'          : { 'value' : 10, 'units' : 'screen pixels'},
                'checkForDupl'          : { 'enabled' : False },
                # exit
                'saveOnExit'            : { 'enabled' : False },
                },
            'profile': {
                'raster0' : { 'pcolor' : (0, 0, 255, 255), # profile line color
                              'pwidth' : 1, # profile line width
                              'pstyle' : 'solid', # profile line pen style
                              },
                'raster1' : { 'pcolor' : (255, 0, 0, 255), 
                              'pwidth' : 1, 
                              'pstyle' : 'solid', 
                              },
                'raster2' : { 'pcolor' : (0, 255, 0, 255), 
                              'pwidth' : 1, 
                              'pstyle' : 'solid', 
                              },
                'font' : { 'titleSize' : 12,
                           'axisSize' : 11,
                           'legendSize' : 10,
                           },
                'marker' : { 'color' : wx.Colour(0, 0, 0),
                             'fill' : 'transparent',
                             'size' : 2,
                             'type' : 'triangle',
                             'legend' : _('Segment break'),
                             },
                'grid' : { 'color' : wx.Colour(200,200,200) ,
                           'enabled' : True,
                           },
                'x-axis' : { 'type' : 'auto', # axis format
                             'min' : 0, # axis min for custom axis range
                             'max': 0, # axis max for custom axis range
                             'log' : False,
                             },
                'y-axis' : { 'type' : 'auto', # axis format
                             'min' : 0, # axis min for custom axis range
                             'max': 0, # axis max for custom axis range
                             'log' : False,
                             },
                'legend' : { 'enabled' : True
                             },
                },
            'georect' : {
                'symbol' : { 'color' : (0, 0, 255, 255),
                             'width' : 2,
                             },
                },
            'nviz' : {
                'view' : {'persp' : { 'value' : 40,
                                      'min' : 1,
                                      'max' : 100,
                                      'step' : 5,
                                      'update' : False,
                                      },
                          'pos' : { 'x' : 0.85,
                                    'y' : 0.85,
                                    'update' : False,
                                    },
                          'height' : { 'value': -1,
                                       'min' : -2245, # TODO: determine min/max height
                                       'max' : 3695, 
                                       'step' : 100,
                                       'update' : False,
                                       },
                          'twist' : { 'value' : 0,
                                      'min' : -180,
                                      'max' : 180,
                                      'step' : 5,
                                      'update' : False,
                                      },
                          'z-exag' : { 'value': 1.0,
                                       'min' : 0.0,
                                       'max' : 10,
                                       'step' : 1,
                                       'update' : False
                                       },
                          },
                'surface' : {
                    'shine': { 'map' : False,
                               'value' : 60.0,
                                   },
                    'color' : { 'map' : True,
                                'value' : (0, 0, 0, 255), # constant: black
                                },
                    'draw' : {
                        'color' : (136, 136, 136, 255),
                        'mode' : 1, # fine
                        'style' : 1, # surface
                        'shading' : 1, # gouraud
                        'res-fine' : 6,
                        'res-coarse' : 9,
                        },
                    'position' : {
                        'x' : 0,
                        'y' : 0,
                        'z' : 0,
                        },
                    },
                },
            }
        
        #
        # user settings
        #
        self.userSettings = copy.deepcopy(self.defaultSettings)
        try:
            self.ReadSettingsFile()
        except gcmd.SettingsError, e:
            print >> sys.stderr, e.message

        #
        # internal settings (based on user settings)
        #
        self.internalSettings = {}
        for group in self.userSettings.keys():
            if group == 'vdigit':
                continue # skip digitization settings (separate window frame)
            self.internalSettings[group] = {}
            for key in self.userSettings[group].keys():
                self.internalSettings[group][key] = {}

        self.internalSettings['general']["mapsetPath"]['value'] = self.GetMapsetPath()
        self.internalSettings['general']['mapsetPath']['choices'] = [_('Mapset search path'),
                                                                     _('All available mapsets')]
        self.internalSettings['atm']['leftDbClick']['choices'] = [_('Edit selected record'),
                                                                  _('Display selected')]
        self.internalSettings['advanced']['settingsFile']['choices'] = ['gisdbase',
                                                                        'location',
                                                                        'mapset']
        self.internalSettings['advanced']['iconTheme']['choices'] = ['grass',
                                                                     'silk']
        self.internalSettings['advanced']['digitInterface']['choices'] = ['vedit',
                                                                          'vdigit']
        self.internalSettings['cmd']['verbosity']['choices'] = ['grassenv',
                                                                'verbose',
                                                                'quiet']
        self.internalSettings['display']['driver']['choices'] = ['default']
        self.internalSettings['display']['statusbarMode']['choices'] = globalvar.MAP_DISPLAY_STATUSBAR_MODE
        
    def GetMapsetPath(self):
        """Store mapset search path"""
        all, access = utils.ListOfMapsets()

        if self.Get(group='general', key='mapsetPath', subkey='selection') == 0:
            return access
        else:
            return all
    
    def ReadSettingsFile(self, settings=None):
        """Reads settings file (mapset, location, gisdbase)"""
        if settings is None:
            settings = self.userSettings

        # look for settings file
        # -> mapser
        #  -> location
        #   -> gisdbase
        gisdbase = grassenv.GetGRASSVariable("GISDBASE")
        location_name = grassenv.GetGRASSVariable("LOCATION_NAME")
        mapset_name = grassenv.GetGRASSVariable("MAPSET")

        mapset_file = os.path.join(gisdbase, location_name, mapset_name, self.fileName)
        location_file = os.path.join(gisdbase, location_name, self.fileName)
        gisdbase_file = os.path.join(gisdbase, self.fileName)

        if os.path.isfile(mapset_file):
            self.filePath = mapset_file
        elif os.path.isfile(location_file):
            self.filePath = location_file
        elif os.path.isfile(gisdbase_file):
            self.filePath = gisdbase_file
        
        if self.filePath:
            self.__ReadFile(self.filePath, settings)
            
    def __ReadFile(self, filename, settings=None):
        """Read settings from file to dict"""
        if settings is None:
            settings = self.userSettings

        try:
            file = open(filename, "r")
            for line in file.readlines():
                line = line.rstrip('%s' % os.linesep)
                group, key = line.split(':')[0:2]
                kv = line.split(':')[2:]
                subkeyMaster = None
                if len(kv) % 2 != 0: # multiple (e.g. nviz)
                    subkeyMaster = kv[0]
                    del kv[0]
                idx = 0
                while idx < len(kv):
                    if subkeyMaster:
                        subkey = [subkeyMaster, kv[idx]]
                    else:
                        subkey = kv[idx]
                    value = kv[idx+1]
                    if len(value) == 0:
                        self.Append(settings, group, key, subkey, '')
                    else:
                        # casting
                        if value == 'True':
                            value = True
                        elif value == 'False':
                            value = False
                        elif value == 'None':
                            value = None
                        elif value[0] == '(':
                            tmp = value.replace('(','').replace(')', '').split(',')
                            try:
                                value = tuple(map(int, tmp))
                            except ValueError:
                                value = tuple(tmp)
                        else:
                            try:
                                value = int(value)
                            except ValueError:
                                try:
                                    value = float(value)
                                except ValueError:
                                    pass

                        self.Append(settings, group, key, subkey, value)
                    idx += 2
        finally:
            file.close()

    def SaveToFile(self, settings=None):
        """Save settings to the file"""
        if settings is None:
            settings = self.userSettings
        
        loc = self.Get(group='advanced', key='settingsFile', subkey='type')
        gisdbase = grassenv.GetGRASSVariable("GISDBASE")
        location_name = grassenv.GetGRASSVariable("LOCATION_NAME")
        mapset_name = grassenv.GetGRASSVariable("MAPSET")
        filePath = None
        if loc == 'gisdbase':
            filePath = os.path.join(gisdbase, self.fileName)
        elif loc == 'location':
            filePath = os.path.join(gisdbase, location_name, self.fileName)
        elif loc == 'mapset':
            filePath = os.path.join(gisdbase, location_name, mapset_name, self.fileName)
        
        if filePath is None:
            raise gcmd.SettingsError(_('Uknown settings file location.'))

        try:
            file = open(filePath, "w")
            for group in settings.keys():
                for key in settings[group].keys():
                    file.write('%s:%s:' % (group, key))
                    subkeys = settings[group][key].keys()
                    for idx in range(len(subkeys)):
                        value = settings[group][key][subkeys[idx]]
                        if type(value) == type({}):
                            if idx > 0:
                                file.write('%s%s:%s:' % (os.linesep, group, key))
                            file.write('%s:' % subkeys[idx])
                            kvalues = settings[group][key][subkeys[idx]].keys()
                            srange = range(len(kvalues))
                            for sidx in srange:
                                file.write('%s:%s' % (kvalues[sidx],
                                                      settings[group][key][subkeys[idx]][kvalues[sidx]]))
                                if sidx < len(kvalues) - 1:
                                    file.write(':')
                        else:
                            file.write('%s:%s' % (subkeys[idx], value))
                            if idx < len(subkeys) - 1:
                                file.write(':')
                    file.write('%s' % os.linesep)
        except IOError, e:
            raise gcmd.SettingsError(e)
        except:
            raise gcmd.SettingsError('Writing settings to file <%s> failed.' % filePath)

        file.close()

        return filePath

    def Get(self, group, key=None, subkey=None, internal=False):
        """Get value by key/subkey

        Raise KeyError if key is not found
        
        @param group settings group
        @param key
        @param subkey if not given return dict of key
        @param subkey1 
        @param internal use internal settings instead

        @return value
        """
        if internal is True:
            settings = self.internalSettings
        else:
            settings = self.userSettings
            
        try:
            if subkey is None:
                if key is None:
                    return settings[group]
                else:
                    return settings[group][key]
            else:
                if type(subkey) == type([]):
                    return settings[group][key][subkey[0]][subkey[1]]
                else:
                    return settings[group][key][subkey]  

        except KeyError:
            raise gcmd.SettingsError("%s %s:%s:%s." % (_("Unable to get value"),
                                                       group, key, subkey))
        
    def Set(self, group, key, subkey, value, internal=False):
        """Set value of key/subkey

        Raise KeyError if group/key is not found
        
        @param group settings group
        @param key key
        @param subkey subkey (value or list)
        @param value value
        @param internal use internal settings instead
        """
        if internal is True:
            settings = self.internalSettings
        else:
            settings = self.userSettings

        try:
            if type(subkey) == type([]):
                settings[group][key][subkey[0]][subkey[1]] = value
            else:
                settings[group][key][subkey] = value
        except KeyError:
            raise gcmd.SettingsError("%s '%s:%s:%s'" % (_("Unable to set "), group, key, subkey))

    def Append(self, dict, group, key, subkey, value):
        """Set value of key/subkey

        Create group/key/subkey if not exists
        
        @param dict settings dictionary to use
        @param group settings group
        @param key key
        @param subkey subkey (value or list)
        @param value value
        """
        if not dict.has_key(group):
            dict[group] = {}

        if not dict[group].has_key(key):
            dict[group][key] = {}

        if type(subkey) == type([]):
            # TODO: len(subkey) > 2
            if not dict[group][key].has_key(subkey[0]):
                dict[group][key][subkey[0]] = {}
            dict[group][key][subkey[0]][subkey[1]] = value
        else:
            dict[group][key][subkey] = value

    def GetDefaultSettings(self):
        """Get default user settings"""
        return self.defaultSettings

globalSettings = Settings()

class PreferencesDialog(wx.Dialog):
    """User preferences dialog"""
    def __init__(self, parent, title=_("User GUI settings"),
                 settings=globalSettings,
                 style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER):
        self.parent = parent # GMFrame
        self.title = title
        wx.Dialog.__init__(self, parent=parent, id=wx.ID_ANY, title=title,
                           style=style, size=(-1, -1))

        self.settings = settings
        # notebook
        notebook = wx.Notebook(parent=self, id=wx.ID_ANY, style=wx.BK_DEFAULT)

        # dict for window ids
        self.winId = {}

        # create notebook pages
        self.__CreateGeneralPage(notebook)
        self.__CreateDisplayPage(notebook)
        self.__CreateCmdPage(notebook)
        self.__CreateAttributeManagerPage(notebook)
        self.__CreateWorkspacePage(notebook)
        self.__CreateAdvancedPage(notebook)

        # buttons
        btnDefault = wx.Button(self, wx.ID_ANY, _("Set to default"))
        btnSave = wx.Button(self, wx.ID_SAVE)
        btnApply = wx.Button(self, wx.ID_APPLY)
        btnCancel = wx.Button(self, wx.ID_CANCEL)
        btnSave.SetDefault()

        # bindigs
        btnDefault.Bind(wx.EVT_BUTTON, self.OnDefault)
        btnDefault.SetToolTipString(_("Revert settings to default and apply changes"))
        btnApply.Bind(wx.EVT_BUTTON, self.OnApply)
        btnApply.SetToolTipString(_("Apply changes for the current session"))
        btnSave.Bind(wx.EVT_BUTTON, self.OnSave)
        btnSave.SetToolTipString(_("Apply and save changes to user settings file (default for next sessions)"))
        btnSave.SetDefault()
        btnCancel.Bind(wx.EVT_BUTTON, self.OnCancel)
        btnCancel.SetToolTipString(_("Close dialog and ignore changes"))

        # sizers
        btnSizer = wx.BoxSizer(wx.HORIZONTAL)
        btnSizer.Add(item=btnDefault, proportion=1,
                     flag=wx.ALL, border=5)
        btnStdSizer = wx.StdDialogButtonSizer()
        btnStdSizer.AddButton(btnCancel)
        btnStdSizer.AddButton(btnSave)
        btnStdSizer.AddButton(btnApply)
        btnStdSizer.Realize()
        
        mainSizer = wx.BoxSizer(wx.VERTICAL)
        mainSizer.Add(item=notebook, proportion=1, flag=wx.EXPAND | wx.ALL, border=5)
        mainSizer.Add(item=btnSizer, proportion=0,
                      flag=wx.EXPAND, border=0)
        mainSizer.Add(item=btnStdSizer, proportion=0,
                      flag=wx.EXPAND | wx.ALL | wx.ALIGN_RIGHT, border=5)

        self.SetSizer(mainSizer)
        mainSizer.Fit(self)

        self.SetMinSize(self.GetBestSize())
        self.SetSize((500, 375))

    def __CreateGeneralPage(self, notebook):
        """Create notebook page for general settings"""
        panel = wx.Panel(parent=notebook, id=wx.ID_ANY)
        notebook.AddPage(page=panel, text=_("General"))

        border = wx.BoxSizer(wx.VERTICAL)
        box   = wx.StaticBox (parent=panel, id=wx.ID_ANY, label=" %s " % _("General settings"))
        sizer = wx.StaticBoxSizer(box, wx.VERTICAL)

        gridSizer = wx.GridBagSizer (hgap=3, vgap=3)
        gridSizer.AddGrowableCol(0)

        #
        # mapsets path
        #
        row = 0
        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=_("Mapsets path:")),
                       flag=wx.ALIGN_LEFT |
                       wx.ALIGN_CENTER_VERTICAL,
                       pos=(row, 0))
        mapsetPath = wx.Choice(parent=panel, id=wx.ID_ANY, size=(200, -1),
                                    choices=self.settings.Get(group='general', key='mapsetPath',
                                                              subkey='choices', internal=True),
                                    name="GetSelection")
        mapsetPath.SetSelection(self.settings.Get(group='general', key='mapsetPath', subkey='selection'))
        self.winId['general:mapsetPath:selection'] = mapsetPath.GetId()

        gridSizer.Add(item=mapsetPath,
                      flag=wx.ALIGN_RIGHT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 1))
        

        #
        # default window layout
        #
        row += 1
        defaultPos = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                                 label=_("Save current window layout as default"),
                                 name='IsChecked')
        defaultPos.SetValue(self.settings.Get(group='general', key='defWindowPos', subkey='enabled'))
        defaultPos.SetToolTip(wx.ToolTip (_("Save current position and size of Layer Manager window and opened "
                                            "Map Display window(s) and use as default for next sessions.")))
        self.winId['general:defWindowPos:enabled'] = defaultPos.GetId()

        gridSizer.Add(item=defaultPos,
                      pos=(row, 0), span=(1, 2))
        
        sizer.Add(item=gridSizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=5)
        border.Add(item=sizer, proportion=0, flag=wx.ALL | wx.EXPAND, border=3)

        #
        # Layer Manager settings
        #
        box   = wx.StaticBox (parent=panel, id=wx.ID_ANY, label=" %s " % _("Layer Manager settings"))
        sizer = wx.StaticBoxSizer(box, wx.VERTICAL)

        gridSizer = wx.GridBagSizer (hgap=3, vgap=3)
        gridSizer.AddGrowableCol(0)

        #
        # show opacily level
        #
        row = 0
        changeOpacityLevel = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                                       label=_("Opacity level editable"),
                                       name='IsChecked')
        changeOpacityLevel.SetValue(self.settings.Get(group='manager', key='changeOpacityLevel', subkey='enabled'))
        self.winId['manager:changeOpacityLevel:enabled'] = changeOpacityLevel.GetId()

        gridSizer.Add(item=changeOpacityLevel,
                      pos=(row, 0), span=(1, 2))

        #
        # ask when removing map layer from layer tree
        #
        row += 1
        askOnRemoveLayer = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                                       label=_("Ask when removing map layer from layer tree"),
                                       name='IsChecked')
        askOnRemoveLayer.SetValue(self.settings.Get(group='manager', key='askOnRemoveLayer', subkey='enabled'))
        self.winId['manager:askOnRemoveLayer:enabled'] = askOnRemoveLayer.GetId()

        gridSizer.Add(item=askOnRemoveLayer,
                      pos=(row, 0), span=(1, 2))

        sizer.Add(item=gridSizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=5)
        border.Add(item=sizer, proportion=0, flag=wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.EXPAND, border=3)

        panel.SetSizer(border)
        
        return panel

    def __CreateDisplayPage(self, notebook):
        """Create notebook page for display settings"""
        panel = wx.Panel(parent=notebook, id=wx.ID_ANY)
        notebook.AddPage(page=panel, text=_("Display"))

        border = wx.BoxSizer(wx.VERTICAL)

        box   = wx.StaticBox (parent=panel, id=wx.ID_ANY, label=" %s " % _("Font settings"))
        sizer = wx.StaticBoxSizer(box, wx.VERTICAL)

        gridSizer = wx.GridBagSizer (hgap=3, vgap=3)
        gridSizer.AddGrowableCol(0)

        #
        # font settings
        #
        row = 0
        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=_("Default font for GRASS displays:")),
                      flag=wx.ALIGN_LEFT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 0))
        fontButton = wx.Button(parent=panel, id=wx.ID_ANY,
                               label=_("Set font"), size=(100, -1))
        gridSizer.Add(item=fontButton,
                      flag=wx.ALIGN_RIGHT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 1))

        sizer.Add(item=gridSizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=5)
        border.Add(item=sizer, proportion=0, flag=wx.ALL | wx.EXPAND, border=3)

        box   = wx.StaticBox (parent=panel, id=wx.ID_ANY, label=" %s " % _("Default display settings"))
        sizer = wx.StaticBoxSizer(box, wx.VERTICAL)

        gridSizer = wx.GridBagSizer (hgap=3, vgap=3)
        gridSizer.AddGrowableCol(0)

        #
        # display driver
        #
        row = 0
        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=_("Display driver:")),
                      flag=wx.ALIGN_LEFT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 0))
        listOfDrivers = self.settings.Get(group='display', key='driver', subkey='choices', internal=True)
        # check if cairo is available
        if 'cairo' not in listOfDrivers:
            for line in gcmd.Command(['d.mon', '-l']).ReadStdOutput():
                if 'cairo' in line:
                    listOfDrivers.append('cairo')
                    break
        driver = wx.Choice(parent=panel, id=wx.ID_ANY, size=(150, -1),
                           choices=listOfDrivers,
                           name="GetStringSelection")
        driver.SetStringSelection(self.settings.Get(group='display', key='driver', subkey='type'))
        self.winId['display:driver:type'] = driver.GetId()

        gridSizer.Add(item=driver,
                      flag=wx.ALIGN_RIGHT,
                      pos=(row, 1))


        #
        # Statusbar mode
        #
        row += 1
        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=_("Statusbar mode:")),
                      flag=wx.ALIGN_LEFT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 0))
        listOfModes = self.settings.Get(group='display', key='statusbarMode', subkey='choices', internal=True)
        statusbarMode = wx.Choice(parent=panel, id=wx.ID_ANY, size=(150, -1),
                                  choices=listOfModes,
                                  name="GetSelection")
        statusbarMode.SetSelection(self.settings.Get(group='display', key='statusbarMode', subkey='selection'))
        self.winId['display:statusbarMode:selection'] = statusbarMode.GetId()

        gridSizer.Add(item=statusbarMode,
                      flag=wx.ALIGN_RIGHT,
                      pos=(row, 1))

        #
        # Use computation resolution
        #
        row += 1
        compResolution = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                                    label=_("Constrain display resolution to computational settings"),
                                    name="IsChecked")
        compResolution.SetValue(self.settings.Get(group='display', key='compResolution', subkey='enabled'))
        self.winId['display:compResolution:enabled'] = compResolution.GetId()

        gridSizer.Add(item=compResolution,
                      pos=(row, 0), span=(1, 2))

        #
        # auto-rendering
        #
        row += 1
        autoRendering = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                                    label=_("Enable auto-rendering"),
                                    name="IsChecked")
        autoRendering.SetValue(self.settings.Get(group='display', key='autoRendering', subkey='enabled'))
        self.winId['display:autoRendering:enabled'] = autoRendering.GetId()

        gridSizer.Add(item=autoRendering,
                      pos=(row, 0), span=(1, 2))

        sizer.Add(item=gridSizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=5)
        border.Add(item=sizer, proportion=0, flag=wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.EXPAND, border=3)

        panel.SetSizer(border)
        
        # bindings
        fontButton.Bind(wx.EVT_BUTTON, self.OnSetFont)
        
        return panel

    def __CreateCmdPage(self, notebook):
        """Create notebook page for commad dialog settings"""
        panel = wx.Panel(parent=notebook, id=wx.ID_ANY)
        notebook.AddPage(page=panel, text=_("Command"))

        border = wx.BoxSizer(wx.VERTICAL)
        box   = wx.StaticBox (parent=panel, id=wx.ID_ANY, label=" %s " % _("Command dialog settings"))
        sizer = wx.StaticBoxSizer(box, wx.VERTICAL)

        gridSizer = wx.GridBagSizer (hgap=3, vgap=3)
        gridSizer.AddGrowableCol(0)

        #
        # command dialog settings
        #
        row = 0
        # overwrite
        overwrite = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                                label=_("Allow output files to overwrite existing files"),
                                name="IsChecked")
        overwrite.SetValue(self.settings.Get(group='cmd', key='overwrite', subkey='enabled'))
        self.winId['cmd:overwrite:enabled'] = overwrite.GetId()

        gridSizer.Add(item=overwrite,
                      pos=(row, 0), span=(1, 2))
        row += 1
        # close
        close = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                            label=_("Close dialog on finish"),
                            name="IsChecked")
        close.SetValue(self.settings.Get(group='cmd', key='closeDlg', subkey='enabled'))
        self.winId['cmd:closeDlg:enabled'] = close.GetId()

        gridSizer.Add(item=close,
                      pos=(row, 0), span=(1, 2))
        row += 1
        # verbosity
        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=_("Verbosity level:")),
                      flag=wx.ALIGN_LEFT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 0))
        verbosity = wx.Choice(parent=panel, id=wx.ID_ANY, size=(200, -1),
                              choices=self.settings.Get(group='cmd', key='verbosity', subkey='choices', internal=True),
                              name="GetStringSelection")
        verbosity.SetStringSelection(self.settings.Get(group='cmd', key='verbosity', subkey='selection'))
        self.winId['cmd:verbosity:selection'] = verbosity.GetId()

        gridSizer.Add(item=verbosity,
                      pos=(row, 1))

        sizer.Add(item=gridSizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=5)
        border.Add(item=sizer, proportion=0, flag=wx.ALL | wx.EXPAND, border=3)

        #
        # raster settings
        #
        box   = wx.StaticBox (parent=panel, id=wx.ID_ANY, label=" %s " % _("Raster settings"))
        sizer = wx.StaticBoxSizer(box, wx.VERTICAL)

        gridSizer = wx.GridBagSizer (hgap=3, vgap=3)
        gridSizer.AddGrowableCol(0)

        #
        # raster overlay
        #
        row = 0
        rasterOverlay = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                                    label=_("Overlay raster maps"),
                                    name='IsChecked')
        rasterOverlay.SetValue(self.settings.Get(group='cmd', key='rasterOverlay', subkey='enabled'))
        self.winId['cmd:rasterOverlay:enabled'] = rasterOverlay.GetId()

        gridSizer.Add(item=rasterOverlay,
                      pos=(row, 0), span=(1, 2))
        
        sizer.Add(item=gridSizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=5)
        border.Add(item=sizer, proportion=0, flag=wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.EXPAND, border=3)

        panel.SetSizer(border)
        
        return panel

    def __CreateAttributeManagerPage(self, notebook):
        """Create notebook page for 'Attribute Table Manager' settings"""
        panel = wx.Panel(parent=notebook, id=wx.ID_ANY)
        notebook.AddPage(page=panel, text=_("Attributes"))

        pageSizer = wx.BoxSizer(wx.VERTICAL)

        #
        # highlighting
        #
        highlightBox = wx.StaticBox(parent=panel, id=wx.ID_ANY,
                                    label=" %s " % _("Highlighting"))
        highlightSizer = wx.StaticBoxSizer(highlightBox, wx.VERTICAL)

        flexSizer = wx.FlexGridSizer (cols=2, hgap=5, vgap=5)
        flexSizer.AddGrowableCol(0)
        label = wx.StaticText(parent=panel, id=wx.ID_ANY, label="Color")
        hlColor = csel.ColourSelect(parent=panel, id=wx.ID_ANY,
                                    colour=self.settings.Get(group='atm', key='highlight', subkey='color'),
                                    size=(25, 25))
        self.winId['atm:highlight:color'] = hlColor.GetId()

        flexSizer.Add(label, proportion=0, flag=wx.ALIGN_CENTER_VERTICAL)
        flexSizer.Add(hlColor, proportion=0, flag=wx.ALIGN_RIGHT | wx.FIXED_MINSIZE)

        label = wx.StaticText(parent=panel, id=wx.ID_ANY, label=_("Line width (in pixels)"))
        hlWidth = wx.SpinCtrl(parent=panel, id=wx.ID_ANY, size=(50, -1),
                              initial=self.settings.Get(group='atm', key='highlight',subkey='width'),
                              min=1, max=1e6)
        self.winId['atm:highlight:width'] = hlWidth.GetId()

        flexSizer.Add(label, proportion=0, flag=wx.ALIGN_CENTER_VERTICAL)
        flexSizer.Add(hlWidth, proportion=0, flag=wx.ALIGN_RIGHT | wx.FIXED_MINSIZE)

        highlightSizer.Add(item=flexSizer,
                           proportion=0,
                           flag=wx.ALL | wx.EXPAND,
                           border=5)

        pageSizer.Add(item=highlightSizer,
                      proportion=0,
                      flag=wx.ALL | wx.EXPAND,
                      border=5)

        #
        # data browser related settings
        #
        dataBrowserBox = wx.StaticBox(parent=panel, id=wx.ID_ANY,
                                    label=" %s " % _("Data browser"))
        dataBrowserSizer = wx.StaticBoxSizer(dataBrowserBox, wx.VERTICAL)

        flexSizer = wx.FlexGridSizer (cols=2, hgap=5, vgap=5)
        flexSizer.AddGrowableCol(0)
        label = wx.StaticText(parent=panel, id=wx.ID_ANY, label=_("Left mouse double click"))
        leftDbClick = wx.Choice(parent=panel, id=wx.ID_ANY,
                                choices=self.settings.Get(group='atm', key='leftDbClick', subkey='choices', internal=True),
                                name="GetSelection")
        leftDbClick.SetSelection(self.settings.Get(group='atm', key='leftDbClick', subkey='selection'))
        self.winId['atm:leftDbClick:selection'] = leftDbClick.GetId()

        flexSizer.Add(label, proportion=0, flag=wx.ALIGN_CENTER_VERTICAL)
        flexSizer.Add(leftDbClick, proportion=0, flag=wx.ALIGN_RIGHT | wx.FIXED_MINSIZE)

        dataBrowserSizer.Add(item=flexSizer,
                           proportion=0,
                           flag=wx.ALL | wx.EXPAND,
                           border=5)

        pageSizer.Add(item=dataBrowserSizer,
                      proportion=0,
                      flag=wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.EXPAND,
                      border=3)

        panel.SetSizer(pageSizer)

        return panel

    def __CreateWorkspacePage(self, notebook):
        """Create notebook page for workspace settings"""
        panel = wx.Panel(parent=notebook, id=wx.ID_ANY)
        notebook.AddPage(page=panel, text=_("Workspace"))

        border = wx.BoxSizer(wx.VERTICAL)
        box   = wx.StaticBox (parent=panel, id=wx.ID_ANY, label=" %s " % _("Loading workspace"))
        sizer = wx.StaticBoxSizer(box, wx.VERTICAL)

        gridSizer = wx.GridBagSizer (hgap=3, vgap=3)
        gridSizer.AddGrowableCol(0)

        row = 0

        #
        # positioning
        #
        posDisplay = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                                 label=_("Suppress positioning Map Display Window(s)"),
                                 name='IsChecked')
        posDisplay.SetValue(self.settings.Get(group='workspace', key='posDisplay', subkey='enabled'))
        self.winId['workspace:posDisplay:enabled'] = posDisplay.GetId()

        gridSizer.Add(item=posDisplay,
                      pos=(row, 0), span=(1, 2))

        row +=1 

        posManager = wx.CheckBox(parent=panel, id=wx.ID_ANY,
                                 label=_("Suppress positioning Layer Manager window"),
                                 name='IsChecked')
        posManager.SetValue(self.settings.Get(group='workspace', key='posManager', subkey='enabled'))
        self.winId['workspace:posManager:enabled'] = posManager.GetId()

        gridSizer.Add(item=posManager,
                      pos=(row, 0), span=(1, 2))

        sizer.Add(item=gridSizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=5)
        border.Add(item=sizer, proportion=0, flag=wx.ALL | wx.EXPAND, border=3)

        panel.SetSizer(border)
        
        return panel

    def __CreateAdvancedPage(self, notebook):
        """Create notebook page for advanced settings"""
        panel = wx.Panel(parent=notebook, id=wx.ID_ANY)
        notebook.AddPage(page=panel, text=_("Advanced"))

        border = wx.BoxSizer(wx.VERTICAL)
        box   = wx.StaticBox (parent=panel, id=wx.ID_ANY, label=" %s " % _("Advanced settings"))
        sizer = wx.StaticBoxSizer(box, wx.VERTICAL)

        gridSizer = wx.GridBagSizer (hgap=3, vgap=3)
        gridSizer.AddGrowableCol(0)

        row = 0

        #
        # place where to store settings
        #
        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=_("Place where to store settings:")),
                       flag=wx.ALIGN_LEFT |
                       wx.ALIGN_CENTER_VERTICAL,
                       pos=(row, 0))
        settingsFile = wx.Choice(parent=panel, id=wx.ID_ANY, size=(125, -1),
                                 choices=self.settings.Get(group='advanced', key='settingsFile',
                                                           subkey='choices', internal=True),
                                 name='GetStringSelection')
        settingsFile.SetStringSelection(self.settings.Get(group='advanced', key='settingsFile', subkey='type'))
        self.winId['advanced:settingsFile:type'] = settingsFile.GetId()

        gridSizer.Add(item=settingsFile,
                      flag=wx.ALIGN_RIGHT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 1))
        row += 1

        #
        # icon theme
        #
        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=_("Icon theme:")),
                       flag=wx.ALIGN_LEFT |
                       wx.ALIGN_CENTER_VERTICAL,
                       pos=(row, 0))
        iconTheme = wx.Choice(parent=panel, id=wx.ID_ANY, size=(125, -1),
                              choices=self.settings.Get(group='advanced', key='iconTheme',
                                                        subkey='choices', internal=True),
                              name="GetStringSelection")
        iconTheme.SetStringSelection(self.settings.Get(group='advanced', key='iconTheme', subkey='type'))
        self.winId['advanced:iconTheme:type'] = iconTheme.GetId()

        gridSizer.Add(item=iconTheme,
                      flag=wx.ALIGN_RIGHT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 1))
        
        row += 1
        iconNote = wordwrap(_("Note: Requires GUI restart."),
                            self.GetSize()[0]-50, wx.ClientDC(self))

        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=iconNote),
                      flag=wx.ALIGN_LEFT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 0), span=(1, 2))
        row += 1
        
        #
        # digitization interface
        #
        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=_("Vector digitizer interface:")),
                       flag=wx.ALIGN_LEFT |
                       wx.ALIGN_CENTER_VERTICAL,
                       pos=(row, 0))
        digitInterface = wx.Choice(parent=panel, id=wx.ID_ANY, size=(125, -1),
                                   choices=self.settings.Get(group='advanced', key='digitInterface',
                                                             subkey='choices', internal=True),
                                   name="GetStringSelection")
        digitInterface.SetStringSelection(self.settings.Get(group='advanced', key='digitInterface',
                                                            subkey='type'))
        self.winId['advanced:digitInterface:type'] = digitInterface.GetId()

        gridSizer.Add(item=digitInterface,
                      flag=wx.ALIGN_RIGHT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 1))
        row += 1

        digitNote = wordwrap(_("Note: User can choose from two interfaces for digitization. "
                               "The simple one uses v.edit command on the background. "
                               "Map topology is rebuild on each operation which can "
                               "significantly slow-down response. The vdigit is a native "
                               "interface which uses v.edit functionality, but doesn't "
                               "call the module itself."),
                             self.GetSize()[0]-50, wx.ClientDC(self))

        gridSizer.Add(item=wx.StaticText(parent=panel, id=wx.ID_ANY,
                                         label=digitNote),
                      flag=wx.ALIGN_LEFT |
                      wx.ALIGN_CENTER_VERTICAL,
                      pos=(row, 0), span=(1, 2))

        sizer.Add(item=gridSizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=5)
        border.Add(item=sizer, proportion=1, flag=wx.ALL | wx.EXPAND, border=3)

        panel.SetSizer(border)
        
        return panel

    def OnSetFont(self, event):
        """'Set font' button pressed"""
        dlg = SetDefaultFont(parent=self, id=wx.ID_ANY,
                             title=_('Select default display font'),
                             pos=wx.DefaultPosition, size=wx.DefaultSize,
                             style=wx.DEFAULT_DIALOG_STYLE,
                             encoding=self.parent.encoding)
        if dlg.ShowModal() == wx.ID_CANCEL:
            dlg.Destroy()
            return

        # set default font type, font, and encoding to whatever selected in dialog
        if dlg.font != None:
            self.font = dlg.font
        if dlg.encoding != None:
            self.encoding = dlg.encoding

        dlg.Destroy()

        # set default font and encoding environmental variables
        os.environ["GRASS_FONT"] = self.font
        if self.encoding != None and self.encoding != "ISO-8859-1":
            os.environ["GRASS_ENCODING"] = self.encoding

        event.Skip()

    def OnSave(self, event):
        """Button 'Save' pressed"""
        self.__UpdateSettings()
        file = self.settings.SaveToFile()
        self.parent.goutput.WriteLog(_('Settings saved to file \'%s\'.') % file)
        self.Close()

    def OnApply(self, event):
        """Button 'Apply' pressed"""
        self.__UpdateSettings()
        self.Close()

    def OnCancel(self, event):
        """Button 'Cancel' pressed"""
        self.Close()

    def OnDefault(self, event):
        """Button 'Set to default' pressed"""
        self.settings.userSettings = copy.deepcopy(self.settings.defaultSettings)
        
        # update widgets
        for gks in self.winId.keys():
            group, key, subkey = gks.split(':')
            value = self.settings.Get(group, key, subkey)
            win = self.FindWindowById(self.winId[gks])
            if win.GetName() in ('GetValue', 'IsChecked'):
                value = win.SetValue(value)
            elif win.GetName() == 'GetSelection':
                value = win.SetSelection(value)
            elif win.GetName() == 'GetStringSelection':
                value = win.SetStringSelection(value)
            else:
                value = win.SetValue(value)


    def __UpdateSettings(self):
        """Update user settings"""
        for item in self.winId.keys():
            group, key, subkey = item.split(':')
            id = self.winId[item]
            win = self.FindWindowById(id)
            if win.GetName() == 'GetValue':
                value = win.GetValue()
            elif win.GetName() == 'GetSelection':
                value = win.GetSelection()
            elif win.GetName() == 'IsChecked':
                value = win.IsChecked()
            elif win.GetName() == 'GetStringSelection':
                value = win.GetStringSelection()
            else:
                value = win.GetValue()

            self.settings.Set(group, key, subkey, value)

        #
        # update default window dimension
        #
        if self.settings.Get(group='general', key='defWindowPos', subkey='enabled') is True:
            dim = ''
            # layer manager
            pos = self.parent.GetPosition()
            size = self.parent.GetSize()
            dim = '%d,%d,%d,%d' % (pos[0], pos[1], size[0], size[1])
            # opened displays
            for page in range(0, self.parent.gm_cb.GetPageCount()):
                pos = self.parent.gm_cb.GetPage(page).maptree.mapdisplay.GetPosition()
                size = self.parent.gm_cb.GetPage(page).maptree.mapdisplay.GetSize()

                dim += ',%d,%d,%d,%d' % (pos[0], pos[1], size[0], size[1])

            self.settings.Set(group='general', key='defWindowPos', subkey='dim', value=dim)
        else:
            self.settings.Set(group='general', key='defWindowPos', subkey='dim', value='')

class SetDefaultFont(wx.Dialog):
    """
    Opens a file selection dialog to select default font
    to use in all GRASS displays
    """
    def __init__(self, parent, id, title, pos=wx.DefaultPosition, size=wx.DefaultSize,
            style=wx.DEFAULT_DIALOG_STYLE, encoding='ISO-8859-1'):
        wx.Dialog.__init__(self, parent, id, title, pos, size, style)

        if "GRASS_FONT" in os.environ:
            self.font = os.environ["GRASS_FONT"]
        else:
            self.font = None

        self.fontlist = self.GetFonts()

        self.encoding = encoding

        sizer = wx.BoxSizer(wx.VERTICAL)

        box = wx.BoxSizer(wx.HORIZONTAL)
        label = wx.StaticText(self, -1, "Select Font:", (15, 50))
        box.Add(label, 0, wx.EXPAND|wx.GROW|wx.ALIGN_TOP|wx.RIGHT, 5)
        self.fontlb = wx.ListBox(self, wx.ID_ANY, pos=wx.DefaultPosition,
                                 size=(280,150), choices=self.fontlist,
                                 style=wx.LB_SINGLE|wx.LB_SORT)
        self.Bind(wx.EVT_LISTBOX, self.EvtListBox, self.fontlb)
        self.Bind(wx.EVT_LISTBOX_DCLICK, self.EvtListBoxDClick, self.fontlb)
        if self.font:
            self.fontlb.SetStringSelection(self.font, True)
        box.Add(self.fontlb, 0, wx.EXPAND|wx.GROW|wx.ALIGN_RIGHT)
        sizer.Add(box, 0, wx.EXPAND|wx.GROW|wx.ALIGN_RIGHT|wx.ALL, 8)

        box = wx.BoxSizer(wx.HORIZONTAL)
        label = wx.StaticText(self, -1, "Character encoding:")
        box.Add(label, 0, wx.ALIGN_RIGHT|wx.RIGHT, 5)
        self.textentry = wx.TextCtrl(self, -1, "", size=(200,-1))
        self.textentry.SetValue(self.encoding)
        box.Add(self.textentry, 0, wx.ALIGN_LEFT)
        self.textentry.Bind(wx.EVT_TEXT, self.OnEncoding)
        sizer.Add(box, 0, wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, 8)

        line = wx.StaticLine(self, -1, size=(20,-1), style=wx.LI_HORIZONTAL)
        sizer.Add(line, 0, wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, 10)

        btnsizer = wx.StdDialogButtonSizer()

        btn = wx.Button(self, wx.ID_OK)
        btn.SetDefault()
        btnsizer.AddButton(btn)

        btn = wx.Button(self, wx.ID_CANCEL)
        btnsizer.AddButton(btn)
        btnsizer.Realize()

        sizer.Add(btnsizer, 0, wx.ALIGN_CENTER_VERTICAL|wx.ALL, 5)

        self.SetSizer(sizer)
        sizer.Fit(self)

    def EvtRadioBox(self, event):
        if event.GetInt() == 0:
            self.fonttype = 'grassfont'
        elif event.GetInt() == 1:
            self.fonttype = 'truetype'

        self.fontlist = self.GetFonts(self.fonttype)
        self.fontlb.SetItems(self.fontlist)

    def OnEncoding(self, event):
        self.encoding = event.GetString()

    def EvtListBox(self, event):
        self.font = event.GetString()
        event.Skip()

    def EvtListBoxDClick(self, event):
        self.font = event.GetString()
        event.Skip()

    def GetFonts(self):
        """
        parses fonts directory or fretypecap file to get a list of fonts for the listbox
        """
        fontlist = []

        cmd = ["d.font", "-l"]

        p = gcmd.Command(cmd, stderr=None)

        dfonts = p.ReadStdOutput()
        dfonts.sort(lambda x,y: cmp(x.lower(), y.lower()))
        for item in range(len(dfonts)):
           # ignore duplicate fonts and those starting with #
           if not dfonts[item].startswith('#') and \
                  dfonts[item] != dfonts[item-1]:
              fontlist.append(dfonts[item])

        return fontlist

class MapsetAccess(wx.Dialog):
    """
    Controls setting options and displaying/hiding map overlay decorations
    """
    def __init__(self, parent, id, title=_('Set/unset access to mapsets in current location'),
                 pos=wx.DefaultPosition, size=(350, 400),
                 style=wx.DEFAULT_DIALOG_STYLE|wx.RESIZE_BORDER):
        
        wx.Dialog.__init__(self, parent, id, title, pos, size, style)

        self.all_mapsets, self.accessible_mapsets = utils.ListOfMapsets()
        self.curr_mapset = grassenv.GetGRASSVariable('MAPSET')

        # make a checklistbox from available mapsets and check those that are active
        sizer = wx.BoxSizer(wx.VERTICAL)

        label = wx.StaticText(parent=self, id=wx.ID_ANY,
                              label=_("Check mapset to make it accessible, uncheck it to hide it.%s"
                                      "Note: PERMANENT and current mapset are always accessible.") % os.linesep)
        sizer.Add(item=label, proportion=0,
                  flag=wx.ALL, border=5)

        self.mapsetlb = CheckListMapset(parent=self)
        self.mapsetlb.LoadData(self.all_mapsets)
        
        sizer.Add(item=self.mapsetlb, proportion=1,
                  flag=wx.ALL | wx.EXPAND, border=5)

        # check all accessible mapsets
        if globalSettings.Get(group='general', key='mapsetPath', subkey='selection') == 1:
            for mset in self.all_mapsets:
                self.mapsetlb.CheckItem(self.all_mapsets.index(mset), True)
        else:
            for mset in self.accessible_mapsets:
                self.mapsetlb.CheckItem(self.all_mapsets.index(mset), True)
                pass

        # dialog buttons
        line = wx.StaticLine(parent=self, id=wx.ID_ANY,
                             style=wx.LI_HORIZONTAL)
        sizer.Add(item=line, proportion=0,
                  flag=wx.EXPAND | wx.ALIGN_CENTRE | wx.ALL, border=5)

        btnsizer = wx.StdDialogButtonSizer()
        okbtn = wx.Button(self, wx.ID_OK)
        okbtn.SetDefault()
        btnsizer.AddButton(okbtn)

        cancelbtn = wx.Button(self, wx.ID_CANCEL)
        btnsizer.AddButton(cancelbtn)
        btnsizer.Realize()

        sizer.Add(item=btnsizer, proportion=0,
                  flag=wx.EXPAND | wx.ALIGN_RIGHT | wx.ALL, border=5)

        # do layout
        self.Layout()
        self.SetSizer(sizer)
        sizer.Fit(self)

        self.SetMinSize(size)
        
    def GetMapsets(self):
        """Get list of checked mapsets"""
        ms = []
        i = 0
        for mset in self.all_mapsets:
            if self.mapsetlb.IsChecked(i):
                ms.append(mset)
            i += 1

        return ms

class CheckListMapset(wx.ListCtrl, listmix.ListCtrlAutoWidthMixin, listmix.CheckListCtrlMixin):
    """List of mapset/owner/group"""
    def __init__(self, parent, pos=wx.DefaultPosition,
                 log=None):
        self.parent = parent
        
        wx.ListCtrl.__init__(self, parent, wx.ID_ANY,
                             style=wx.LC_REPORT)
        listmix.CheckListCtrlMixin.__init__(self)
        self.log = log

        # setup mixins
        listmix.ListCtrlAutoWidthMixin.__init__(self)

    def LoadData(self, mapsets):
        """Load data into list"""
        self.InsertColumn(0, _('Mapset'))
        self.InsertColumn(1, _('Owner'))
        self.InsertColumn(2, _('Group'))
        locationPath = os.path.join(grassenv.GetGRASSVariable('GISDBASE'),
                                    grassenv.GetGRASSVariable('LOCATION_NAME'))
        for mapset in mapsets:
            index = self.InsertStringItem(sys.maxint, mapset)
            mapsetPath = os.path.join(locationPath,
                                      mapset)
            stat_info = os.stat(mapsetPath)
	    if os.name in ('posix', 'mac'):
                self.SetStringItem(index, 1, "%s" % pwd.getpwuid(stat_info.st_uid)[0])
                # FIXME: get group name
                self.SetStringItem(index, 2, "%-8s" % stat_info.st_gid) 
	    else:
                # FIXME: no pwd under MS Windows (owner: 0, group: 0)
                self.SetStringItem(index, 1, "%-8s" % stat_info.st_uid)
                self.SetStringItem(index, 2, "%-8s" % stat_info.st_gid)
                
        self.SetColumnWidth(col=0, width=wx.LIST_AUTOSIZE)
        self.SetColumnWidth(col=1, width=wx.LIST_AUTOSIZE)
        
    def OnCheckItem(self, index, flag):
        """Mapset checked/unchecked"""
        mapset = self.parent.all_mapsets[index]
        if mapset == 'PERMANENT' or mapset == self.parent.curr_mapset:
            self.CheckItem(index, True)