"""!
@package gui_core.dialogs

@brief Various dialogs used in wxGUI.

List of classes:
 - dialogs::ElementDialog
 - dialogs::LocationDialog
 - dialogs::MapsetDialog
 - dialogs::NewVectorDialog
 - dialogs::SavedRegion
 - dialogs::DecorationDialog
 - dialogs::TextLayerDialog 
 - dialogs::GroupDialog
 - dialogs::MapLayersDialog
 - dialogs::ImportDialog
 - dialogs::GdalImportDialog
 - dialogs::DxfImportDialog
 - dialogs::LayersList (used by MultiImport) 
 - dialogs::SetOpacityDialog
 - dialogs::ImageSizeDialog

(C) 2008-2011 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 Martin Landa <landa.martin gmail.com>
@author Anna Kratochvilova <kratochanna gmail.com> (GroupDialog)
"""

import os
import sys
import re
from bisect import bisect

import wx
import wx.lib.filebrowsebutton as filebrowse
import wx.lib.mixins.listctrl as listmix
from wx.lib.newevent import NewEvent

from grass.script import core as grass
from grass.script import task as gtask

from core             import globalvar
from core.gcmd        import GError, RunCommand, GMessage
from gui_core.gselect import ElementSelect, LocationSelect, MapsetSelect, Select, GdalSelect
from gui_core.forms   import GUI
from gui_core.widgets import SingleSymbolPanel, EVT_SYMBOL_SELECTION_CHANGED
from core.utils       import GetListOfMapsets, GetLayerNameFromCmd, GetValidLayerName
from core.settings    import UserSettings
from core.debug       import Debug

wxApplyOpacity, EVT_APPLY_OPACITY = NewEvent()

class ElementDialog(wx.Dialog):
    def __init__(self, parent, title, label, id = wx.ID_ANY,
                 etype = False, style = wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER,
                 **kwargs):
        """!General dialog to choose given element (location, mapset, vector map, etc.)
        
        @param parent window
        @param title window title
        @param label element label
        @param etype show also ElementSelect
        """
        wx.Dialog.__init__(self, parent, id, title, style = style, **kwargs)
        
        self.etype = etype
        self.label = label
        
        self.panel = wx.Panel(parent = self, id = wx.ID_ANY)
        
        self.btnCancel = wx.Button(parent = self.panel, id = wx.ID_CANCEL)
        self.btnOK     = wx.Button(parent = self.panel, id = wx.ID_OK)
        self.btnOK.SetDefault()
        self.btnOK.Enable(False)
        
        if self.etype:
            self.typeSelect = ElementSelect(parent = self.panel,
                                            size = globalvar.DIALOG_GSELECT_SIZE)
            self.typeSelect.Bind(wx.EVT_CHOICE, self.OnType)
        
        self.element = None # must be defined 
        
        self.__layout()
        
    def PostInit(self):
        self.element.SetFocus()
        self.element.Bind(wx.EVT_TEXT, self.OnElement)
        
    def OnType(self, event):
        """!Select element type"""
        if not self.etype:
            return
        evalue = self.typeSelect.GetValue(event.GetString())
        self.element.SetType(evalue)
        
    def OnElement(self, event):
        """!Name for vector map layer given"""
        if len(event.GetString()) > 0:
            self.btnOK.Enable(True)
        else:
            self.btnOK.Enable(False)
        
    def __layout(self):
        """!Do layout"""
        self.sizer = wx.BoxSizer(wx.VERTICAL)
        
        self.dataSizer = wx.BoxSizer(wx.VERTICAL)
        
        if self.etype:
            self.dataSizer.Add(item = wx.StaticText(parent = self.panel, id = wx.ID_ANY,
                                                    label = _("Type of element:")),
                               proportion = 0, flag = wx.ALL, border = 1)
            self.dataSizer.Add(item = self.typeSelect,
                               proportion = 0, flag = wx.ALL, border = 1)
        
        self.dataSizer.Add(item = wx.StaticText(parent = self.panel, id = wx.ID_ANY,
                                                label = self.label),
                           proportion = 0, flag = wx.ALL, border = 1)
        
        # buttons
        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(self.btnCancel)
        btnSizer.AddButton(self.btnOK)
        btnSizer.Realize()
        
        self.sizer.Add(item = self.dataSizer, proportion = 1,
                       flag = wx.EXPAND | wx.ALL | wx.ALIGN_CENTER, border = 5)
        
        self.sizer.Add(item = btnSizer, proportion = 0,
                       flag = wx.EXPAND | wx.ALL | wx.ALIGN_CENTER, border = 5)
        
    def GetElement(self):
        """!Return (mapName, overwrite)"""
        return self.element.GetValue()
    
    def GetType(self):
        """!Get element type"""
        return self.element.tcp.GetType()
        
class LocationDialog(ElementDialog):
    """!Dialog used to select location"""
    def __init__(self, parent, title = _("Select GRASS location and mapset"), id =  wx.ID_ANY):
        ElementDialog.__init__(self, parent, title, label = _("Name of GRASS location:"))

        self.element = LocationSelect(parent = self.panel, id = wx.ID_ANY,
                                      size = globalvar.DIALOG_GSELECT_SIZE)

        self.element1 = MapsetSelect(parent = self.panel, id = wx.ID_ANY,
                                     size = globalvar.DIALOG_GSELECT_SIZE,
                                     setItems = False, skipCurrent = True)
        
        self.PostInit()
        
        self._layout()
        self.SetMinSize(self.GetSize())

    def _layout(self):
        """!Do layout"""
        self.dataSizer.Add(self.element, proportion = 0,
                      flag = wx.EXPAND | wx.ALL, border = 1)
 
        self.dataSizer.Add(wx.StaticText(parent = self.panel, id = wx.ID_ANY,
                                         label = _("Name of mapset:")), proportion = 0,
                           flag = wx.EXPAND | wx.ALL, border = 1)

        self.dataSizer.Add(self.element1, proportion = 0,
                           flag = wx.EXPAND | wx.ALL, border = 1)
       
        self.panel.SetSizer(self.sizer)
        self.sizer.Fit(self)

    def OnElement(self, event):
        """!Select mapset given location name"""
        location = event.GetString()
        
        if location:
            dbase = grass.gisenv()['GISDBASE']
            self.element1.UpdateItems(dbase = dbase, location = location)
            self.element1.SetSelection(0)
            mapset = self.element1.GetStringSelection()
        
        if location and mapset:
            self.btnOK.Enable(True)
        else:
            self.btnOK.Enable(False)

    def GetValues(self):
        """!Get location, mapset"""
        return (self.GetElement(), self.element1.GetStringSelection())
    
class MapsetDialog(ElementDialog):
    """!Dialog used to select mapset"""
    def __init__(self, parent, title = _("Select mapset in GRASS location"),
                 location = None, id =  wx.ID_ANY):
        ElementDialog.__init__(self, parent, title, label = _("Name of mapset:"))
        if location:
            self.SetTitle(self.GetTitle() + ' <%s>' % location)
        else:
            self.SetTitle(self.GetTitle() + ' <%s>' % grass.gisenv()['LOCATION_NAME'])
        
        self.element = MapsetSelect(parent = self.panel, id = wx.ID_ANY, skipCurrent = True,
                                    size = globalvar.DIALOG_GSELECT_SIZE)
        
        self.PostInit()
        
        self.__Layout()
        self.SetMinSize(self.GetSize())

    def __Layout(self):
        """!Do layout"""
        self.dataSizer.Add(self.element, proportion = 0,
                           flag = wx.EXPAND | wx.ALL, border = 1)
        
        self.panel.SetSizer(self.sizer)
        self.sizer.Fit(self)

    def GetMapset(self):
        return self.GetElement()
    
class NewVectorDialog(ElementDialog):
    def __init__(self, parent, id = wx.ID_ANY, title = _('Create new vector map'),
                 disableAdd = False, disableTable = False,
                 style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER, *kwargs):
        """!Dialog for creating new vector map

        @param parent parent window
        @param id window id
        @param title window title
        @param disableAdd disable 'add layer' checkbox
        @param disableTable disable 'create table' checkbox
        @param style window style
        @param kwargs other argumentes for ElementDialog
        
        @return dialog instance       
        """
        ElementDialog.__init__(self, parent, title, label = _("Name for new vector map:"))
        
        self.element = Select(parent = self.panel, id = wx.ID_ANY, size = globalvar.DIALOG_GSELECT_SIZE,
                              type = 'vector', mapsets = [grass.gisenv()['MAPSET'],])
        
        self.table = wx.CheckBox(parent = self.panel, id = wx.ID_ANY,
                                 label = _("Create attribute table"))
        self.table.SetValue(True)
        if disableTable:
            self.table.Enable(False)
        
        self.keycol = wx.TextCtrl(parent = self.panel, id =  wx.ID_ANY,
                                  size = globalvar.DIALOG_SPIN_SIZE)
        self.keycol.SetValue(UserSettings.Get(group = 'atm', key = 'keycolumn', subkey = 'value'))
        if disableTable:
            self.keycol.Enable(False)
        
        self.addbox = wx.CheckBox(parent = self.panel,
                                  label = _('Add created map into layer tree'), style = wx.NO_BORDER)
        if disableAdd:
            self.addbox.SetValue(True)
            self.addbox.Enable(False)
        else:
            self.addbox.SetValue(UserSettings.Get(group = 'cmd', key = 'addNewLayer', subkey = 'enabled'))

        self.table.Bind(wx.EVT_CHECKBOX, self.OnTable)
        
        self.PostInit()
        
        self._layout()
        self.SetMinSize(self.GetSize())
        
    def OnMapName(self, event):
        """!Name for vector map layer given"""
        self.OnElement(event)
        
    def OnTable(self, event):
        self.keycol.Enable(event.IsChecked())
        
    def _layout(self):
        """!Do layout"""
        self.dataSizer.Add(self.element, proportion = 0,
                      flag = wx.EXPAND | wx.ALL, border = 1)
        
        self.dataSizer.Add(self.table, proportion = 0,
                      flag = wx.EXPAND | wx.ALL, border = 1)

        keySizer = wx.BoxSizer(wx.HORIZONTAL)
        keySizer.Add(item = wx.StaticText(parent = self.panel, label = _("Key column:")),
                     proportion = 0,
                     flag = wx.ALIGN_CENTER_VERTICAL)
        keySizer.AddSpacer(10)
        keySizer.Add(item = self.keycol, proportion = 0,
                     flag = wx.ALIGN_RIGHT)
        self.dataSizer.Add(item = keySizer, proportion = 1,
                           flag = wx.EXPAND | wx.ALL, border = 1)

        self.dataSizer.AddSpacer(5)
        
        self.dataSizer.Add(item = self.addbox, proportion = 0,
                      flag = wx.EXPAND | wx.ALL, border = 1)
        
        self.panel.SetSizer(self.sizer)
        self.sizer.Fit(self)

    def GetName(self, full = False):
        """!Get name of vector map to be created

        @param full True to get fully qualified name
        """
        name = self.GetElement()
        if full:
            if '@' in name:
                return name
            else:
                return name + '@' + grass.gisenv()['MAPSET']
        
        return name.split('@', 1)[0]

    def GetKey(self):
        """!Get key column name"""
        return self.keycol.GetValue()
    
    def IsChecked(self, key):
        """!Get dialog properties

        @param key window key ('add', 'table')

        @return True/False
        @return None on error
        """
        if key == 'add':
            return self.addbox.IsChecked()
        elif key == 'table':
            return self.table.IsChecked()
        
        return None
    
def CreateNewVector(parent, cmd, title = _('Create new vector map'),
                    exceptMap = None, log = None, disableAdd = False, disableTable = False):
    """!Create new vector map layer
    
    @param cmd (prog, **kwargs)
    @param title window title
    @param exceptMap list of maps to be excepted
    @param log
    @param disableAdd disable 'add layer' checkbox
    @param disableTable disable 'create table' checkbox

    @return dialog instance
    @return None on error
    """
    dlg = NewVectorDialog(parent, title = title,
                          disableAdd = disableAdd, disableTable = disableTable)
    
    if dlg.ShowModal() != wx.ID_OK:
        dlg.Destroy()
        return None

    outmap = dlg.GetName()
    key    = dlg.GetKey()
    if outmap == exceptMap:
        GError(parent = parent,
               message = _("Unable to create vector map <%s>.") % outmap)
        dlg.Destroy()
        return None
    if dlg.table.IsEnabled() and not key:
        GError(parent = parent,
               message = _("Invalid or empty key column.\n"
                           "Unable to create vector map <%s>.") % outmap)
        dlg.Destroy()
        return
        
    if outmap == '': # should not happen
        dlg.Destroy()
        return None
    
    # update cmd -> output name defined
    cmd[1][cmd[2]] = outmap
        
    listOfVectors = grass.list_grouped('vect')[grass.gisenv()['MAPSET']]
    
    overwrite = False
    if not UserSettings.Get(group = 'cmd', key = 'overwrite', subkey = 'enabled') and \
            outmap in listOfVectors:
        dlgOw = wx.MessageDialog(parent, message = _("Vector map <%s> already exists "
                                                     "in the current mapset. "
                                                     "Do you want to overwrite it?") % outmap,
                                 caption = _("Overwrite?"),
                                 style = wx.YES_NO | wx.YES_DEFAULT | wx.ICON_QUESTION)
        if dlgOw.ShowModal() == wx.ID_YES:
            overwrite = True
        else:
            dlgOw.Destroy()
            dlg.Destroy()
            return None
    
    if UserSettings.Get(group = 'cmd', key = 'overwrite', subkey = 'enabled'):
        overwrite = True
        
    ret = RunCommand(prog = cmd[0],
                     parent = parent,
                     overwrite = overwrite,
                     **cmd[1])
    if ret != 0:
        dlg.Destroy()
        return None
    
    # create attribute table
    if dlg.table.IsEnabled() and dlg.table.IsChecked():
        sql = 'CREATE TABLE %s (%s INTEGER)' % (outmap, key)
        
        RunCommand('db.connect',
                   flags = 'c')
        
        Debug.msg(1, "SQL: %s" % sql)
        RunCommand('db.execute',
                   quiet = True,
                   parent = parent,
                   input = '-',
                   stdin = sql)
        
        RunCommand('v.db.connect',
                   quiet = True,
                   parent = parent,
                   map = outmap,
                   table = outmap,
                   key = key,
                   layer = '1')
    
    # return fully qualified map name
    if '@' not in outmap:
        outmap += '@' + grass.gisenv()['MAPSET']
    
    if log:
        log.WriteLog(_("New vector map <%s> created") % outmap)
        
    return dlg

class SavedRegion(wx.Dialog):
    def __init__(self, parent, id = wx.ID_ANY, title = "", loadsave = 'load',
                 **kwargs):
        """!Loading and saving of display extents to saved region file

        @param loadsave load or save region?
        """
        wx.Dialog.__init__(self, parent, id, title, **kwargs)

        self.loadsave = loadsave
        self.wind = ''
        
        sizer = wx.BoxSizer(wx.VERTICAL)
        
        box = wx.BoxSizer(wx.HORIZONTAL)
        label = wx.StaticText(parent = self, id = wx.ID_ANY)
        box.Add(item = label, proportion = 0, flag = wx.ALIGN_CENTRE | wx.ALL, border = 5)
        if loadsave == 'load':
            label.SetLabel(_("Load region:"))
            selection = Select(parent = self, id = wx.ID_ANY, size = globalvar.DIALOG_GSELECT_SIZE,
                               type = 'windows')
        elif loadsave == 'save':
            label.SetLabel(_("Save region:"))
            selection = Select(parent = self, id = wx.ID_ANY, size = globalvar.DIALOG_GSELECT_SIZE,
                               type = 'windows', mapsets = [grass.gisenv()['MAPSET']], fullyQualified = False)
        
        box.Add(item = selection, proportion = 0, flag = wx.ALIGN_CENTRE | wx.ALL, border = 5)
        selection.SetFocus()
        selection.Bind(wx.EVT_TEXT, self.OnRegion)
        
        sizer.Add(item = box, proportion = 0, flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL,
                  border = 5)
        
        line = wx.StaticLine(parent = self, id = wx.ID_ANY, size = (20, -1), style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.LEFT|wx.RIGHT, border = 5)
        
        btnsizer = wx.StdDialogButtonSizer()
        
        btn = wx.Button(parent = self, id = wx.ID_OK)
        btn.SetDefault()
        btnsizer.AddButton(btn)
        
        btn = wx.Button(parent = self, id = wx.ID_CANCEL)
        btnsizer.AddButton(btn)
        btnsizer.Realize()
        
        sizer.Add(item = btnsizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)
        
        self.SetSizer(sizer)
        sizer.Fit(self)
        self.Layout()
        
    def OnRegion(self, event):
        self.wind = event.GetString()
    
DECOR_DIALOG_LEGEND = 0
DECOR_DIALOG_BARSCALE = 1

class DecorationDialog(wx.Dialog):
    """
    """
    def __init__(self, parent, title, overlayController,
                 ddstyle, **kwargs):

        wx.Dialog.__init__(self, parent, wx.ID_ANY, title, **kwargs)

        self.parent  = parent  # MapFrame
        self._overlay = overlayController
        self._ddstyle = ddstyle
        
        sizer = wx.BoxSizer(wx.VERTICAL)

        box = wx.BoxSizer(wx.HORIZONTAL)
        self.chkbox = wx.CheckBox(parent = self, id = wx.ID_ANY)
        self.chkbox.SetValue(True)

        if self._ddstyle == DECOR_DIALOG_LEGEND:
            self.chkbox.SetLabel("Show legend")
        else:
            self.chkbox.SetLabel("Show scale and North arrow")


        box.Add(item = self.chkbox, proportion = 0,
                flag = wx.ALIGN_CENTRE|wx.ALL, border = 5)
        sizer.Add(item = box, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, border = 5)

        box = wx.BoxSizer(wx.HORIZONTAL)
        optnbtn = wx.Button(parent = self, id = wx.ID_ANY, label = _("Set options"))
        box.Add(item = optnbtn, proportion = 0, flag = wx.ALIGN_CENTRE|wx.ALL, border = 5)
        sizer.Add(item = box, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, border = 5)
        if self._ddstyle == DECOR_DIALOG_LEGEND:
            box = wx.BoxSizer(wx.HORIZONTAL)
            self.resizeBtn = wx.ToggleButton(parent = self, id = wx.ID_ANY, label = _("Set size and position"))
            self.resizeBtn.SetToolTipString(_("Click and drag on the map display to set legend "
                                              "size and position and then press OK"))
            self.resizeBtn.Disable()
            self.resizeBtn.Bind(wx.EVT_TOGGLEBUTTON, self.OnResize)
            box.Add(item = self.resizeBtn, proportion = 0, flag = wx.ALIGN_CENTRE|wx.ALL, border = 5)
            sizer.Add(item = box, proportion = 0,
                      flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, border = 5)

        box = wx.BoxSizer(wx.HORIZONTAL)
        if self._ddstyle == DECOR_DIALOG_LEGEND:
            labelText = _("Drag legend object with mouse in pointer mode to position.\n"
                          "Double-click to change options.\n"
                          "Define raster map name for legend in properties dialog.")
        else:
            labelText = _("Drag scale object with mouse in pointer mode to position.\n"
                          "Double-click to change options.")

        label = wx.StaticText(parent = self, id = wx.ID_ANY,
                              label = labelText)

        box.Add(item = label, proportion = 0,
                flag = wx.ALIGN_CENTRE|wx.ALL, border = 5)
        sizer.Add(item = box, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, border = 5)

        line = wx.StaticLine(parent = self, id = wx.ID_ANY, size = (20,-1), style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, border = 5)

        # buttons
        btnsizer = wx.StdDialogButtonSizer()

        self.btnOK = wx.Button(parent = self, id = wx.ID_OK)
        self.btnOK.SetDefault()
        self.btnOK.Enable(self._ddstyle != DECOR_DIALOG_LEGEND)
        btnsizer.AddButton(self.btnOK)

        btnCancel = wx.Button(parent = self, id = wx.ID_CANCEL)
        btnsizer.AddButton(btnCancel)
        btnsizer.Realize()

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

        #
        # bindings
        #
        optnbtn.Bind(wx.EVT_BUTTON, self.OnOptions)
        btnCancel.Bind(wx.EVT_BUTTON, lambda evt: self.CloseDialog())
        self.btnOK.Bind(wx.EVT_BUTTON, self.OnOK)

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

        mapName, found = GetLayerNameFromCmd(self._overlay.cmd)
        if found:
            # enable 'OK' and 'Resize' button
            self.btnOK.Enable()
            if not self.parent.IsPaneShown('3d'):
                self.resizeBtn.Enable()
            
            # set title
            self.SetTitle(_('Legend of raster map <%s>') % \
                              mapName)
        
    def OnOptions(self, event):
        """!Sets option for decoration map overlays
        """
        if self._overlay.propwin is None:
            # build properties dialog
            GUI(parent = self.parent).ParseCommand(cmd = self._overlay.cmd,
                                                   completed = (self.GetOptData, self._overlay.name, ''))
            
        else:
            if self._overlay.propwin.IsShown():
                self._overlay.propwin.SetFocus()
            else:
                self._overlay.propwin.Show()
    
    def OnResize(self, event):
        if event.GetInt(): 
            self.parent.MapWindow.SetCursor(self.parent.cursors["cross"])
            self.parent.MapWindow.mouse['use'] = 'legend'
            self.parent.MapWindow.mouse['box'] = 'box'
            self.parent.MapWindow.pen = wx.Pen(colour = 'Black', width = 2, style = wx.SHORT_DASH)
        else:
            self.parent.MapWindow.SetCursor(self.parent.cursors["default"])
            self.parent.MapWindow.mouse['use'] = 'pointer'
            
    def CloseDialog(self):
        """!Hide dialog"""
        if self._ddstyle == DECOR_DIALOG_LEGEND and self.resizeBtn.GetValue():
            self.resizeBtn.SetValue(False)
            self.OnResize(None)

        self.Hide()

    def OnOK(self, event):
        """!Button 'OK' pressed"""
        # enable or disable overlay
        self._overlay.Show(self.chkbox.IsChecked())

        # update map
        if self.parent.IsPaneShown('3d'):
            self.parent.MapWindow.UpdateOverlays()
            
        self.parent.MapWindow.UpdateMap()

        # hide dialog
        self.CloseDialog()

    def GetOptData(self, dcmd, layer, params, propwin):
        """!Process decoration layer data"""
        if dcmd:
            self._overlay.cmd = dcmd
        self._overlay.propwin = propwin
        if params:
            self.btnOK.Enable()
            if self._ddstyle == DECOR_DIALOG_LEGEND and not self.parent.IsPaneShown('3d'):
                self.resizeBtn.Enable()


class TextLayerDialog(wx.Dialog):
    """
    Controls setting options and displaying/hiding map overlay decorations
    """

    def __init__(self, parent, ovlId, title, name = 'text',
                 pos = wx.DefaultPosition, size = wx.DefaultSize, style = wx.DEFAULT_DIALOG_STYLE):

        wx.Dialog.__init__(self, parent, wx.ID_ANY, title, pos, size, style)
        from wx.lib.expando import ExpandoTextCtrl, EVT_ETC_LAYOUT_NEEDED

        self.ovlId = ovlId
        self.parent = parent

        if self.ovlId in self.parent.MapWindow.textdict.keys():
            self.currText = self.parent.MapWindow.textdict[self.ovlId]['text']
            self.currFont = self.parent.MapWindow.textdict[self.ovlId]['font']
            self.currClr  = self.parent.MapWindow.textdict[self.ovlId]['color']
            self.currRot  = self.parent.MapWindow.textdict[self.ovlId]['rotation']
            self.currCoords = self.parent.MapWindow.textdict[self.ovlId]['coords']
            self.currBB = self.parent.MapWindow.textdict[self.ovlId]['bbox']
        else:
            self.currClr = wx.BLACK
            self.currText = ''
            self.currFont = self.GetFont()
            self.currRot = 0.0
            self.currCoords = [10, 10, 10, 10]
            self.currBB = wx.Rect()

        self.sizer = wx.BoxSizer(wx.VERTICAL)
        box = wx.GridBagSizer(vgap = 5, hgap = 5)

        # show/hide
        self.chkbox = wx.CheckBox(parent = self, id = wx.ID_ANY,
                                  label = _('Show text object'))
        if self.parent.Map.GetOverlay(self.ovlId) is None:
            self.chkbox.SetValue(True)
        else:
            self.chkbox.SetValue(self.parent.MapWindow.overlays[self.ovlId]['layer'].IsActive())
        box.Add(item = self.chkbox, span = (1,2),
                flag = wx.ALIGN_LEFT|wx.ALL, border = 5,
                pos = (0, 0))

        # text entry
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Enter text:"))
        box.Add(item = label,
                flag = wx.ALIGN_CENTER_VERTICAL,
                pos = (1, 0))

        self.textentry = ExpandoTextCtrl(parent = self, id = wx.ID_ANY, value = "", size = (300,-1))
        self.textentry.SetFont(self.currFont)
        self.textentry.SetForegroundColour(self.currClr)
        self.textentry.SetValue(self.currText)
        # get rid of unneeded scrollbar when text box first opened
        self.textentry.SetClientSize((300,-1))
        
        box.Add(item = self.textentry,
                pos = (1, 1))

        # rotation
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Rotation:"))
        box.Add(item = label,
                flag = wx.ALIGN_CENTER_VERTICAL,
                pos = (2, 0))
        self.rotation = wx.SpinCtrl(parent = self, id = wx.ID_ANY, value = "", pos = (30, 50),
                                    size = (75,-1), style = wx.SP_ARROW_KEYS)
        self.rotation.SetRange(-360, 360)
        self.rotation.SetValue(int(self.currRot))
        box.Add(item = self.rotation,
                flag = wx.ALIGN_RIGHT,
                pos = (2, 1))

        # font
        fontbtn = wx.Button(parent = self, id = wx.ID_ANY, label = _("Set font"))
        box.Add(item = fontbtn,
                flag = wx.ALIGN_RIGHT,
                pos = (3, 1))

        self.sizer.Add(item = box, proportion = 1,
                  flag = wx.ALL, border = 10)

        # note
        box = wx.BoxSizer(wx.HORIZONTAL)
        label = wx.StaticText(parent = self, id = wx.ID_ANY,
                              label = _("Drag text with mouse in pointer mode "
                                      "to position.\nDouble-click to change options"))
        box.Add(item = label, proportion = 0,
                flag = wx.ALIGN_CENTRE | wx.ALL, border = 5)
        self.sizer.Add(item = box, proportion = 0,
                  flag = wx.EXPAND | wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_CENTER | wx.ALL, border = 5)

        line = wx.StaticLine(parent = self, id = wx.ID_ANY,
                             size = (20,-1), style = wx.LI_HORIZONTAL)
        self.sizer.Add(item = line, proportion = 0,
                  flag = wx.EXPAND | wx.ALIGN_CENTRE | wx.ALL, border = 5)

        btnsizer = wx.StdDialogButtonSizer()

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

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

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

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

        # bindings
        self.Bind(EVT_ETC_LAYOUT_NEEDED, self.OnRefit, self.textentry)
        self.Bind(wx.EVT_BUTTON,     self.OnSelectFont, fontbtn)
        self.Bind(wx.EVT_TEXT,       self.OnText,       self.textentry)
        self.Bind(wx.EVT_SPINCTRL,   self.OnRotation,   self.rotation)

    def OnRefit(self, event):
        """!Resize text entry to match text"""
        self.sizer.Fit(self)

    def OnText(self, event):
        """!Change text string"""
        self.currText = event.GetString()

    def OnRotation(self, event):
        """!Change rotation"""
        self.currRot = event.GetInt()

        event.Skip()

    def OnSelectFont(self, event):
        """!Change font"""
        data = wx.FontData()
        data.EnableEffects(True)
        data.SetColour(self.currClr)         # set colour
        data.SetInitialFont(self.currFont)

        dlg = wx.FontDialog(self, data)

        if dlg.ShowModal() == wx.ID_OK:
            data = dlg.GetFontData()
            self.currFont = data.GetChosenFont()
            self.currClr = data.GetColour()

            self.textentry.SetFont(self.currFont)
            self.textentry.SetForegroundColour(self.currClr)

            self.Layout()

        dlg.Destroy()

    def GetValues(self):
        """!Get text properties"""
        return { 'text' : self.currText,
                 'font' : self.currFont,
                 'color' : self.currClr,
                 'rotation' : self.currRot,
                 'coords' : self.currCoords,
                 'active' : self.chkbox.IsChecked() }

class GroupDialog(wx.Dialog):
    """!Dialog for creating/editing groups"""
    def __init__(self, parent = None, defaultGroup = None, 
                 title = _("Create or edit imagery groups"),
                 style = wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER, **kwargs):
                     
        wx.Dialog.__init__(self, parent = parent, id = wx.ID_ANY, title = title,
                            style = style, **kwargs)
                            
        self.parent = parent
        self.defaultGroup = defaultGroup
        self.currentGroup = self.defaultGroup
        self.groupChanged = False
        
        self.bodySizer = self._createDialogBody()
        
        # buttons
        btnOk = wx.Button(parent = self, id = wx.ID_OK)
        btnApply = wx.Button(parent = self, id = wx.ID_APPLY)
        btnClose = wx.Button(parent = self, id = wx.ID_CANCEL)
        
        btnOk.SetToolTipString(_("Apply changes to selected group and close dialog"))
        btnApply.SetToolTipString(_("Apply changes to selected group"))
        btnClose.SetToolTipString(_("Close dialog, changes are not applied"))

        btnOk.SetDefault()
        
        # sizers & do layout
        # btnSizer = wx.BoxSizer(wx.HORIZONTAL)
        # btnSizer.Add(item = btnClose, proportion = 0,
        #              flag = wx.RIGHT | wx.ALIGN_RIGHT | wx.EXPAND, border = 5)
        # btnSizer.Add(item = btnApply, proportion = 0,
        #              flag = wx.LEFT, border = 5)
        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(btnOk)
        btnSizer.AddButton(btnApply)
        btnSizer.AddButton(btnClose)
        btnSizer.Realize()
        
        mainSizer = wx.BoxSizer(wx.VERTICAL)
        mainSizer.Add(item = self.bodySizer, proportion = 1,
                      flag = wx.EXPAND | wx.LEFT | wx.RIGHT, border = 10)
        mainSizer.Add(item = wx.StaticLine(parent = self, id = wx.ID_ANY,
                      style = wx.LI_HORIZONTAL), proportion = 0,
                      flag = wx.EXPAND | wx.LEFT | wx.RIGHT, border = 10) 
        
        mainSizer.Add(item = btnSizer, proportion = 0,
                      flag = wx.ALL | wx.ALIGN_RIGHT, border = 10)

        self.SetSizer(mainSizer)
        mainSizer.Fit(self)
        
        btnOk.Bind(wx.EVT_BUTTON, self.OnOk)
        btnApply.Bind(wx.EVT_BUTTON, self.OnApply)
        btnClose.Bind(wx.EVT_BUTTON, self.OnClose)

        # set dialog min size
        self.SetMinSize(self.GetSize())
        
    def _createDialogBody(self):
        bodySizer = wx.BoxSizer(wx.VERTICAL)
    
        # group selection
        bodySizer.Add(item = wx.StaticText(parent = self, id = wx.ID_ANY,
                                           label = _("Select the group you want to edit or "
                                                     "enter name of new group:")),
                      flag = wx.ALIGN_CENTER_VERTICAL | wx.TOP, border = 10)
        self.groupSelect = Select(parent = self, type = 'group',
                                  mapsets = [grass.gisenv()['MAPSET']],
                                  size = globalvar.DIALOG_GSELECT_SIZE) # searchpath?
            
        bodySizer.Add(item = self.groupSelect, flag = wx.TOP | wx.EXPAND, border = 5)
        
        bodySizer.AddSpacer(10)
        # layers in group
        bodySizer.Add(item = wx.StaticText(parent = self, label = _("Layers in selected group:")),
                      flag = wx.ALIGN_CENTER_VERTICAL | wx.BOTTOM, border = 5)
        
        gridSizer = wx.GridBagSizer(vgap = 5, hgap = 5)
        gridSizer.AddGrowableCol(0)
        
        self.layerBox = wx.ListBox(parent = self,  id = wx.ID_ANY, size = (-1, 150),
                                   style = wx.LB_MULTIPLE | wx.LB_NEEDED_SB)
        
        gridSizer.Add(item = self.layerBox, pos = (0, 0), span = (2, 1), flag = wx.EXPAND)
        
        self.addLayer = wx.Button(self, id = wx.ID_ADD)
        self.addLayer.SetToolTipString(_("Select map layers and add them to the list."))
        gridSizer.Add(item = self.addLayer, pos = (0, 1), flag = wx.EXPAND)
        
        self.removeLayer = wx.Button(self, id = wx.ID_REMOVE)
        self.removeLayer.SetToolTipString(_("Remove selected layer(s) from list."))
        gridSizer.Add(item = self.removeLayer, pos = (1, 1))
        
        bodySizer.Add(item = gridSizer, proportion = 1, flag = wx.EXPAND)
        
        self.infoLabel = wx.StaticText(parent = self, id = wx.ID_ANY)
        bodySizer.Add(item = self.infoLabel, 
                      flag = wx.ALIGN_CENTER_VERTICAL | wx.TOP | wx.BOTTOM, border = 5)
        
        self.subGroup = wx.CheckBox(parent = self, id = wx.ID_ANY,
                                    label = _("Define also sub-group (same name as group)"))
        bodySizer.Add(item = self.subGroup, flag = wx.BOTTOM | wx.EXPAND, border = 5)
        
        # bindings
        self.groupSelect.GetTextCtrl().Bind(wx.EVT_TEXT, self.OnGroupSelected)
        self.addLayer.Bind(wx.EVT_BUTTON, self.OnAddLayer)
        self.removeLayer.Bind(wx.EVT_BUTTON, self.OnRemoveLayer)
        
        if self.defaultGroup:
            self.groupSelect.SetValue(self.defaultGroup)
        
        return bodySizer
        
    def OnAddLayer(self, event):
        """!Add new layer to listbox"""
        dlg = MapLayersDialog(parent = self, title = _("Add selected map layers into group"),
                              mapType = 'raster', selectAll = False,
                              fullyQualified = True, showFullyQualified = False)
        if dlg.ShowModal() != wx.ID_OK:
            dlg.Destroy()
            return
        
        layers = dlg.GetMapLayers()
        for layer in layers:
            if layer not in self.GetLayers():
                self.layerBox.Append(layer)
                self.groupChanged = True
            
    
    def OnRemoveLayer(self, event):
        """!Remove layer from listbox"""
        while self.layerBox.GetSelections():
            sel = self.layerBox.GetSelections()[0]
            self.layerBox.Delete(sel)
            self.groupChanged = True
                
    def GetLayers(self):
        """!Get layers"""
        return self.layerBox.GetItems()
        
    def OnGroupSelected(self, event):
        """!Text changed in group selector"""
        # callAfter must be called to close popup before other actions
        wx.CallAfter(self.GroupSelected)
        
    def GroupSelected(self):
        """!Group was selected, check if changes were apllied"""
        group = self.GetSelectedGroup()
        if self.groupChanged:
            dlg = wx.MessageDialog(self, message = _("Group <%s> was changed, "
                                                     "do you want to apply changes?") % self.currentGroup,
                                   caption = _("Unapplied changes"),
                                   style = wx.YES_NO | wx.ICON_QUESTION | wx.YES_DEFAULT)
            if dlg.ShowModal() == wx.ID_YES:
                self.ApplyChanges(showResult = True)
                
            dlg.Destroy()
            
            
        
        groups = self.GetExistGroups()
        if group in groups:
            self.ShowGroupLayers(self.GetGroupLayers(group))
            
        self.currentGroup = group
        self.groupChanged = False
        
        self.ClearNotification()
        
    def ShowGroupLayers(self, mapList):
        """!Show map layers in currently selected group"""
        self.layerBox.Set(mapList)
        
        
    def EditGroup(self, group):
        """!Edit selected group"""
        layersNew = self.GetLayers()
        layersOld = self.GetGroupLayers(group)
        
        add = []
        remove = []
        for layerNew in layersNew:
            if layerNew not in layersOld:
                add.append(layerNew)
                
        for layerOld in layersOld:
            if layerOld not in layersNew:
                remove.append(layerOld)
        
        kwargs = {}
        if self.subGroup.IsChecked():
            kwargs['subgroup'] = group
        
        ret = None
        if remove:
            ret = RunCommand('i.group',
                             parent = self,
                             group = group,
                             flags = 'r',
                             input = ','.join(remove),
                             **kwargs)
        
        if add:
            ret = RunCommand('i.group',
                             parent = self,
                             group = group,
                             input = ','.join(add),
                             **kwargs)
        
        return ret
        
    def CreateNewGroup(self, group):
        """!Create new group"""
        layers = self.GetLayers()
        
        kwargs = {}
        if self.subGroup.IsChecked():
            kwargs['subgroup'] = group
        
        return RunCommand('i.group',
                          parent = self,
                          group = group,
                          input = layers,
                          **kwargs)
    
    def GetExistGroups(self):
        """!Returns existing groups in current mapset"""
        return grass.list_grouped('group')[grass.gisenv()['MAPSET']]
        
    def ShowResult(self, group, returnCode, create):
        """!Show if operation was successfull."""
        group += '@' + grass.gisenv()['MAPSET']
        if returnCode is None:
            label = _("No changes to apply in group <%s>.") % group
        elif returnCode == 0:
            if create:
                label = _("Group <%s> was successfully created.") % group
            else:
                label = _("Group <%s> was successfully changed.") % group
        else:
            if create:
                label = _("Creating of new group <%s> failed.") % group
            else:
                label = _("Changing of group <%s> failed.") % group
                
        self.infoLabel.SetLabel(label)
        wx.FutureCall(4000, self.ClearNotification)
        
    def GetSelectedGroup(self):
        """!Return currently selected group (without mapset)"""
        return self.groupSelect.GetValue().split('@')[0]
        
    def GetGroupLayers(self, group):
        """!Get layers in group"""
        res = RunCommand('i.group',
                         parent = self,
                         flags = 'g',
                         group = group,
                         read = True).strip()
        if res.split('\n')[0]:
            return res.split('\n')
        return []
        
    def ClearNotification(self):
        """!Clear notification string"""
        self.infoLabel.SetLabel("")
       
    def ApplyChanges(self, showResult):
        """!Create or edit group"""
        group = self.currentGroup
        if not group:
            GMessage(parent = self,
                     message = _("No group selected."))
            return False
        
        groups = self.GetExistGroups()
        if group in groups:
            ret = self.EditGroup(group)
            self.ShowResult(group = group, returnCode = ret, create = False)
            
        else:
            ret = self.CreateNewGroup(group)
            self.ShowResult(group = group, returnCode = ret, create = True)
            
        self.groupChanged = False
        
        return True
        
    def OnApply(self, event):
        """!Apply changes"""
        self.ApplyChanges(showResult = True)
        
    def OnOk(self, event):
        """!Apply changes and close dialog"""
        if self.ApplyChanges(showResult = False):
            self.OnClose(event)
        
    def OnClose(self, event):
        """!Close dialog"""
        if not self.IsModal():
            self.Destroy()
        event.Skip()
        
class MapLayersDialog(wx.Dialog):
    def __init__(self, parent, title, modeler = False,
                 mapType = None, selectAll = True, fullyQualified = True, showFullyQualified = True, 
                 style = wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER, **kwargs):
        """!Dialog for selecting map layers (raster, vector)
        
        Valid mapType values:
         - raster
         - raster3d
         - vector
        
        @param mapType type of map (if None: raster, vector, 3d raster, if one only: selects it and disables selection)
        @param selectAll all/none maps should be selected by default
        @param fullyQualified True if dialog should return full map names by default
        @param showFullyQualified True to show 'fullyQualified' checkbox, otherwise hide it
        """
        wx.Dialog.__init__(self, parent = parent, id = wx.ID_ANY, title = title,
                           style = style, **kwargs)
        
        self.parent = parent # GMFrame or ?
        self.mapType = mapType
        self.selectAll = selectAll
        
        # dialog body
        self.bodySizer = self._createDialogBody()
        # update list of layer to be loaded
        self.map_layers = [] # list of map layers (full list type/mapset)
        self.LoadMapLayers(self.GetLayerType(cmd = True),
                           self.mapset.GetStringSelection())
        
        self.fullyQualified = wx.CheckBox(parent = self, id = wx.ID_ANY,
                                          label = _("Use fully-qualified map names"))
        self.fullyQualified.SetValue(fullyQualified)
        self.fullyQualified.Show(showFullyQualified)

        self.dseries = None
        if modeler:
            self.dseries = wx.CheckBox(parent = self, id = wx.ID_ANY,
                                       label = _("Dynamic series (%s)") % 'g.mlist')
            self.dseries.SetValue(False)
        
        # buttons
        btnCancel = wx.Button(parent = self, id = wx.ID_CANCEL)
        btnOk = wx.Button(parent = self, id = wx.ID_OK)
        btnOk.SetDefault()
        
        # sizers & do layout
        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(btnCancel)
        btnSizer.AddButton(btnOk)
        btnSizer.Realize()
        
        mainSizer = wx.BoxSizer(wx.VERTICAL)
        mainSizer.Add(item = self.bodySizer, proportion = 1,
                      flag = wx.EXPAND | wx.ALL, border = 5)
        mainSizer.Add(item = self.fullyQualified, proportion = 0,
                      flag = wx.EXPAND | wx.LEFT | wx.RIGHT, border = 5)
        if self.dseries:
            mainSizer.Add(item = self.dseries, proportion = 0,
                          flag = wx.EXPAND | wx.LEFT | wx.RIGHT, border = 5)
        
        mainSizer.Add(item = btnSizer, proportion = 0,
                      flag = wx.EXPAND | wx.ALL | wx.ALIGN_CENTER, border = 5)

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

        # set dialog min size
        self.SetMinSize(self.GetSize())
        
    def _createDialogBody(self):
        bodySizer = wx.GridBagSizer(vgap = 3, hgap = 3)
        
        # layer type
        bodySizer.Add(item = wx.StaticText(parent = self, label = _("Map type:")),
                      flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (0,0))
        
        self.layerType = wx.Choice(parent = self, id = wx.ID_ANY,
                                   choices = [_('raster'), _('3D raster'), _('vector')], size = (100,-1))
        
        if self.mapType:
            if self.mapType == 'raster':
                self.layerType.SetSelection(0)
            elif self.mapType == 'raster3d':
                self.layerType.SetSelection(1)
            elif self.mapType == 'vector':
                self.layerType.SetSelection(2)
            self.layerType.Disable()
        else:
            self.layerType.SetSelection(0)
            
        bodySizer.Add(item = self.layerType,
                      pos = (0,1))
        
        # select toggle
        self.toggle = wx.CheckBox(parent = self, id = wx.ID_ANY,
                                  label = _("Select toggle"))
        self.toggle.SetValue(self.selectAll)
        bodySizer.Add(item = self.toggle,
                      flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (0,2))
        
        # mapset filter
        bodySizer.Add(item = wx.StaticText(parent = self, label = _("Mapset:")),
                      flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (1,0))
        
        self.mapset = MapsetSelect(parent = self, searchPath = True)
        self.mapset.SetStringSelection(grass.gisenv()['MAPSET'])
        bodySizer.Add(item = self.mapset,
                      pos = (1,1), span = (1, 2))
        
        # map name filter
        bodySizer.Add(item = wx.StaticText(parent = self, label = _("Pattern:")),
                      flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (2,0))
        
        self.filter = wx.TextCtrl(parent = self, id = wx.ID_ANY,
                                  value = "",
                                  size = (250,-1))
        bodySizer.Add(item = self.filter,
                      flag = wx.EXPAND,
                      pos = (2,1), span = (1, 2))
        
        # layer list 
        bodySizer.Add(item = wx.StaticText(parent = self, label = _("List of maps:")),
                      flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_TOP,
                      pos = (3,0))
        self.layers = wx.CheckListBox(parent = self, id = wx.ID_ANY,
                                      size = (250, 100),
                                      choices = [])
        bodySizer.Add(item = self.layers,
                      flag = wx.EXPAND,
                      pos = (3,1), span = (1, 2))
        
        bodySizer.AddGrowableCol(1)
        bodySizer.AddGrowableRow(3)
        # bindings
        self.layerType.Bind(wx.EVT_CHOICE, self.OnChangeParams)
        self.mapset.Bind(wx.EVT_COMBOBOX, self.OnChangeParams)
        self.layers.Bind(wx.EVT_RIGHT_DOWN, self.OnMenu)
        self.filter.Bind(wx.EVT_TEXT, self.OnFilter)
        self.toggle.Bind(wx.EVT_CHECKBOX, self.OnToggle)
        
        return bodySizer

    def LoadMapLayers(self, type, mapset):
        """!Load list of map layers

        @param type layer type ('raster' or 'vector')
        @param mapset mapset name
        """
        self.map_layers = grass.mlist_grouped(type = type)[mapset]
        self.layers.Set(self.map_layers)
        
        # check all items by default
        for item in range(self.layers.GetCount()):
            
            self.layers.Check(item, check = self.selectAll)
        
    def OnChangeParams(self, event):
        """!Filter parameters changed by user"""
        # update list of layer to be loaded
        self.LoadMapLayers(self.GetLayerType(cmd = True),
                           self.mapset.GetStringSelection())
        
        event.Skip()
        
    def OnMenu(self, event):
        """!Table description area, context menu"""
        if not hasattr(self, "popupID1"):
            self.popupDataID1 = wx.NewId()
            self.popupDataID2 = wx.NewId()
            self.popupDataID3 = wx.NewId()

            self.Bind(wx.EVT_MENU, self.OnSelectAll,    id = self.popupDataID1)
            self.Bind(wx.EVT_MENU, self.OnSelectInvert, id = self.popupDataID2)
            self.Bind(wx.EVT_MENU, self.OnDeselectAll,  id = self.popupDataID3)
        
        # generate popup-menu
        menu = wx.Menu()
        menu.Append(self.popupDataID1, _("Select all"))
        menu.Append(self.popupDataID2, _("Invert selection"))
        menu.Append(self.popupDataID3, _("Deselect all"))
        
        self.PopupMenu(menu)
        menu.Destroy()
        
    def OnSelectAll(self, event):
        """!Select all map layer from list"""
        for item in range(self.layers.GetCount()):
            self.layers.Check(item, True)
        
    def OnSelectInvert(self, event):
        """!Invert current selection"""
        for item in range(self.layers.GetCount()):
            if self.layers.IsChecked(item):
                self.layers.Check(item, False)
            else:
                self.layers.Check(item, True)
        
    def OnDeselectAll(self, event):
        """!Select all map layer from list"""
        for item in range(self.layers.GetCount()):
            self.layers.Check(item, False)
        
    def OnFilter(self, event):
        """!Apply filter for map names"""
        if len(event.GetString()) == 0:
           self.layers.Set(self.map_layers) 
           return 
        
        list = []
        for layer in self.map_layers:
            try:
                if re.compile('^' + event.GetString()).search(layer):
                    list.append(layer)
            except:
                pass
        
        self.layers.Set(list)
        self.OnSelectAll(None)
        
        event.Skip()
        
    def OnToggle(self, event):
        """!Select toggle (check or uncheck all layers)"""
        check = event.Checked()
        for item in range(self.layers.GetCount()):
            self.layers.Check(item, check)
        
        event.Skip()
        
    def GetMapLayers(self):
        """!Return list of checked map layers"""
        layerNames = []
        for indx in self.layers.GetSelections():
            # layers.append(self.layers.GetStringSelec(indx))
            pass

        fullyQualified = self.fullyQualified.IsChecked()
        mapset = self.mapset.GetStringSelection()
        for item in range(self.layers.GetCount()):
            if not self.layers.IsChecked(item):
                continue
            if fullyQualified:
                layerNames.append(self.layers.GetString(item) + '@' + mapset)
            else:
                layerNames.append(self.layers.GetString(item))
        
        return layerNames
    
    def GetLayerType(self, cmd = False):
        """!Get selected layer type

        @param cmd True for g.mlist
        """
        if not cmd:
            return self.layerType.GetStringSelection()
        
        sel = self.layerType.GetSelection()
        if sel == 0:
            ltype = 'rast'
        elif sel == 1:
            ltype = 'rast3d'
        else:
            ltype = 'vect'
        
        return ltype

    def GetDSeries(self):
        """!Used by modeler only

        @return g.mlist command
        """
        if not self.dseries or not self.dseries.IsChecked():
            return ''
        
        cond = 'map in `g.mlist type=%s ' % self.GetLayerType(cmd = True)
        patt = self.filter.GetValue()
        if patt:
            cond += 'pattern=%s ' % patt
        cond += 'mapset=%s`' % self.mapset.GetStringSelection()
        
        return cond

class ImportDialog(wx.Dialog):
    """!Dialog for bulk import of various data (base class)"""
    def __init__(self, parent, itype,
                 id = wx.ID_ANY, title = _("Multiple import"),
                 style = wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER):
        self.parent = parent    # GMFrame 
        self.importType = itype
        self.options = dict()   # list of options
        
        self.commandId = -1  # id of running command
        
        wx.Dialog.__init__(self, parent, id, title, style = style,
                           name = "MultiImportDialog")
        
        self.panel = wx.Panel(parent = self, id = wx.ID_ANY)
        
        self.layerBox = wx.StaticBox(parent = self.panel, id = wx.ID_ANY,
                                     label = _(" List of %s layers ") % self.importType.upper())
        
        #
        # list of layers
        #
        columns = [_('Layer id'),
                   _('Layer name'),
                   _('Name for GRASS map (editable)')]
        self.list = LayersList(parent = self.panel, columns = columns)
        self.list.LoadData()

        self.optionBox = wx.StaticBox(parent = self.panel, id = wx.ID_ANY,
                                      label = "%s" % _("Options"))
        
        cmd = self._getCommand()
        task = gtask.parse_interface(cmd)
        for f in task.get_options()['flags']:
            name = f.get('name', '')
            desc = f.get('label', '')
            if not desc:
                desc = f.get('description', '')
            if not name and not desc:
                continue
            if cmd == 'r.in.gdal' and name not in ('o', 'e', 'l', 'k'):
                continue
            elif cmd == 'r.external' and name not in ('o', 'e', 'r', 'h', 'v'):
                continue
            elif cmd == 'v.in.ogr' and name not in ('c', 'z', 't', 'o', 'r', 'e', 'w'):
                continue
            elif cmd == 'v.external' and name not in ('b'):
                continue
            elif cmd == 'v.in.dxf' and name not in ('e', 't', 'b', 'f', 'i'):
                continue
            self.options[name] = wx.CheckBox(parent = self.panel, id = wx.ID_ANY,
                                             label = desc)
        
        if not self.options:
            self.optionBox.Hide()
        
        self.overwrite = wx.CheckBox(parent = self.panel, id = wx.ID_ANY,
                                     label = _("Allow output files to overwrite existing files"))
        self.overwrite.SetValue(UserSettings.Get(group = 'cmd', key = 'overwrite', subkey = 'enabled'))
        
        self.add = wx.CheckBox(parent = self.panel, id = wx.ID_ANY)
        self.closeOnFinish = wx.CheckBox(parent = self.panel, id = wx.ID_ANY,
                                     label = _("Close dialog on finish"))
        self.closeOnFinish.SetValue(UserSettings.Get(group = 'cmd', key = 'closeDlg', subkey = 'enabled'))
        
        #
        # buttons
        #
        # cancel
        self.btn_close = wx.Button(parent = self.panel, id = wx.ID_CLOSE)
        self.btn_close.SetToolTipString(_("Close dialog"))
        self.btn_close.Bind(wx.EVT_BUTTON, self.OnClose)
        # run
        self.btn_run = wx.Button(parent = self.panel, id = wx.ID_OK, label = _("&Import"))
        self.btn_run.SetToolTipString(_("Import selected layers"))
        self.btn_run.SetDefault()
        self.btn_run.Enable(False)
        self.btn_run.Bind(wx.EVT_BUTTON, self.OnRun)
        # run command dialog
        self.btn_cmd = wx.Button(parent = self.panel, id = wx.ID_ANY,
                                 label = _("Command dialog"))
        self.btn_cmd.Bind(wx.EVT_BUTTON, self.OnCmdDialog)
        
    def doLayout(self):
        """!Do layout"""
        dialogSizer = wx.BoxSizer(wx.VERTICAL)
        
        # dsn input
        dialogSizer.Add(item = self.dsnInput, proportion = 0,
                        flag = wx.EXPAND)
        
        #
        # list of DXF layers
        #
        layerSizer = wx.StaticBoxSizer(self.layerBox, wx.HORIZONTAL)

        layerSizer.Add(item = self.list, proportion = 1,
                      flag = wx.ALL | wx.EXPAND, border = 5)
        
        dialogSizer.Add(item = layerSizer, proportion = 1,
                        flag = wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.EXPAND, border = 5)

        # options
        if self.optionBox.IsShown():
            optionSizer = wx.StaticBoxSizer(self.optionBox, wx.VERTICAL)
            for key in self.options.keys():
                optionSizer.Add(item = self.options[key], proportion = 0)
            
            dialogSizer.Add(item = optionSizer, proportion = 0,
                            flag = wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.EXPAND, border = 5)
        
        dialogSizer.Add(item = self.overwrite, proportion = 0,
                        flag = wx.LEFT | wx.RIGHT | wx.BOTTOM, border = 5)
        
        dialogSizer.Add(item = self.add, proportion = 0,
                        flag = wx.LEFT | wx.RIGHT | wx.BOTTOM, border = 5)
        
        dialogSizer.Add(item = self.closeOnFinish, proportion = 0,
                        flag = wx.LEFT | wx.RIGHT | wx.BOTTOM, border = 5)
        #
        # buttons
        #
        btnsizer = wx.BoxSizer(orient = wx.HORIZONTAL)
        
        btnsizer.Add(item = self.btn_cmd, proportion = 0,
                     flag = wx.RIGHT | wx.ALIGN_CENTER,
                     border = 10)
        
        btnsizer.Add(item = self.btn_close, proportion = 0,
                     flag = wx.LEFT | wx.RIGHT | wx.ALIGN_CENTER,
                     border = 10)
        
        btnsizer.Add(item = self.btn_run, proportion = 0,
                     flag = wx.RIGHT | wx.ALIGN_CENTER,
                     border = 10)
        
        dialogSizer.Add(item = btnsizer, proportion = 0,
                        flag = wx.ALIGN_CENTER_VERTICAL | wx.BOTTOM | wx.ALIGN_RIGHT,
                        border = 10)
        
        # dialogSizer.SetSizeHints(self.panel)
        self.panel.SetAutoLayout(True)
        self.panel.SetSizer(dialogSizer)
        dialogSizer.Fit(self.panel)
        
        # auto-layout seems not work here - FIXME
        size = wx.Size(globalvar.DIALOG_GSELECT_SIZE[0] + 225, 550)
        self.SetMinSize(size)
        self.SetSize((size.width, size.height + 100))
        # width = self.GetSize()[0]
        # self.list.SetColumnWidth(col = 1, width = width / 2 - 50)
        self.Layout()

    def _getCommand(self):
        """!Get command"""
        return ''
    
    def OnClose(self, event = None):
        """!Close dialog"""
        self.Close()

    def OnRun(self, event):
        """!Import/Link data (each layes as separate vector map)"""
        pass

    def OnCmdDialog(self, event):
        """!Show command dialog"""
        pass
    
    def AddLayers(self, returncode, cmd = None):
        """!Add imported/linked layers into layer tree"""
        if not self.add.IsChecked() or returncode != 0:
            return
        
        self.commandId += 1
        maptree = self.parent.curr_page.maptree
        
        layer, output = self.list.GetLayers()[self.commandId]
        
        if '@' not in output:
            name = output + '@' + grass.gisenv()['MAPSET']
        else:
            name = output
        
        # add imported layers into layer tree
        if self.importType == 'gdal':
            cmd = ['d.rast',
                   'map=%s' % name]
            if UserSettings.Get(group = 'cmd', key = 'rasterOverlay', subkey = 'enabled'):
                cmd.append('-o')
            
            item = maptree.AddLayer(ltype = 'raster',
                                    lname = name, lchecked = False,
                                    lcmd = cmd, multiple = False)
        else:
            item = maptree.AddLayer(ltype = 'vector',
                                    lname = name, lchecked = False,
                                    lcmd = ['d.vect',
                                            'map=%s' % name],
                                    multiple = False)
        
        maptree.mapdisplay.MapWindow.ZoomToMap()
        
    def OnAbort(self, event):
        """!Abort running import

        @todo not yet implemented
        """
        pass

class GdalImportDialog(ImportDialog):
    def __init__(self, parent, ogr = False, link = False):
        """!Dialog for bulk import of various raster/vector data

        @param parent parent window
        @param ogr True for OGR (vector) otherwise GDAL (raster)
        @param link True for linking data otherwise importing data
        """
        self.link = link
        self.ogr  = ogr
        
        if ogr:
            ImportDialog.__init__(self, parent, itype = 'ogr')
            if link:
                self.SetTitle(_("Link external vector data"))
            else:
                self.SetTitle(_("Import vector data"))
        else:
            ImportDialog.__init__(self, parent, itype = 'gdal') 
            if link:
                self.SetTitle(_("Link external raster data"))
            else:
                self.SetTitle(_("Import raster data"))
        
        self.dsnInput = GdalSelect(parent = self, panel = self.panel,
                                   ogr = ogr, link = link)
        
        if link:
            self.add.SetLabel(_("Add linked layers into layer tree"))
        else:
            self.add.SetLabel(_("Add imported layers into layer tree"))
        
        self.add.SetValue(UserSettings.Get(group = 'cmd', key = 'addNewLayer', subkey = 'enabled'))

        if link:
            self.btn_run.SetLabel(_("&Link"))
            self.btn_run.SetToolTipString(_("Link selected layers"))
            if ogr:
                self.btn_cmd.SetToolTipString(_('Open %s dialog') % 'v.external')
            else:
                self.btn_cmd.SetToolTipString(_('Open %s dialog') % 'r.external')
        else:
            self.btn_run.SetLabel(_("&Import"))
            self.btn_run.SetToolTipString(_("Import selected layers"))
            if ogr:
                self.btn_cmd.SetToolTipString(_('Open %s dialog') % 'v.in.ogr')
            else:
                self.btn_cmd.SetToolTipString(_('Open %s dialog') % 'r.in.gdal')
        
        self.doLayout()

    def OnRun(self, event):
        """!Import/Link data (each layes as separate vector map)"""
        self.commandId = -1
        data = self.list.GetLayers()
        if not data:
            GMessage(_("No layers selected. Operation canceled."),
                     parent = self)
            return
        
        dsn  = self.dsnInput.GetDsn()
        ext  = self.dsnInput.GetFormatExt()
        
        # determine data driver for PostGIS links
        popOGR = False
        if self.importType == 'ogr' and \
                self.dsnInput.GetType() == 'db' and \
                self.dsnInput.GetFormat() == 'PostgreSQL' and \
                'GRASS_VECTOR_OGR' not in os.environ:
            popOGR = True
            os.environ['GRASS_VECTOR_OGR'] = '1'
        
        for layer, output in data:
            if self.importType == 'ogr':
                if ext and layer.rfind(ext) > -1:
                    layer = layer.replace('.' + ext, '')
                if self.link:
                    cmd = ['v.external',
                           'dsn=%s' % dsn,
                           'output=%s' % output,
                           'layer=%s' % layer]
                else:
                    cmd = ['v.in.ogr',
                           'dsn=%s' % dsn,
                           'layer=%s' % layer,
                           'output=%s' % output]
            else: # gdal
                if self.dsnInput.GetType() == 'dir':
                    idsn = os.path.join(dsn, layer)
                else:
                    idsn = dsn
                
                if self.link:
                    cmd = ['r.external',
                           'input=%s' % idsn,
                           'output=%s' % output]
                else:
                    cmd = ['r.in.gdal',
                           'input=%s' % idsn,
                           'output=%s' % output]
            
            if self.overwrite.IsChecked():
                cmd.append('--overwrite')
            
            for key in self.options.keys():
                if self.options[key].IsChecked():
                    cmd.append('-%s' % key)
            
            if UserSettings.Get(group = 'cmd', key = 'overwrite', subkey = 'enabled') and \
                    '--overwrite' not in cmd:
                cmd.append('--overwrite')
            
            # run in Layer Manager
            self.parent.goutput.RunCmd(cmd, switchPage = True,
                                       onDone = self.AddLayers)
        
        if popOGR:
            os.environ.pop('GRASS_VECTOR_OGR')

        if self.closeOnFinish.IsChecked():
            self.Close()
        
    def _getCommand(self):
        """!Get command"""
        if self.link:
            if self.ogr:
                return 'v.external'
            else:
                return 'r.external'
        else:
            if self.ogr:
                return 'v.in.ogr'
            else:
                return 'r.in.gdal'
        
        return ''
    
    def OnCmdDialog(self, event):
        """!Show command dialog"""
        name = self._getCommand()
        GUI(parent = self, modal = False).ParseCommand(cmd = [name])
           
class DxfImportDialog(ImportDialog):
    """!Dialog for bulk import of DXF layers""" 
    def __init__(self, parent):
        ImportDialog.__init__(self, parent, itype = 'dxf',
                              title = _("Import DXF layers"))
        
        self.dsnInput = filebrowse.FileBrowseButton(parent = self.panel, id = wx.ID_ANY, 
                                                    size = globalvar.DIALOG_GSELECT_SIZE, labelText = '',
                                                    dialogTitle = _('Choose DXF file to import'),
                                                    buttonText = _('Browse'),
                                                    startDirectory = os.getcwd(), fileMode = 0,
                                                    changeCallback = self.OnSetDsn,
                                                    fileMask = "DXF File (*.dxf)|*.dxf")
        
        self.add.SetLabel(_("Add imported layers into layer tree"))
        
        self.add.SetValue(UserSettings.Get(group = 'cmd', key = 'addNewLayer', subkey = 'enabled'))
        
        self.doLayout()

    def _getCommand(self):
        """!Get command"""
        return 'v.in.dxf'
    
    def OnRun(self, event):
        """!Import/Link data (each layes as separate vector map)"""
        data = self.list.GetLayers()
        
        # hide dialog
        self.Hide()
        
        inputDxf = self.dsnInput.GetValue()
        
        for layer, output in data:
            cmd = ['v.in.dxf',
                   'input=%s' % inputDxf,
                   'layers=%s' % layer,
                   'output=%s' % output]

            for key in self.options.keys():
                if self.options[key].IsChecked():
                    cmd.append('-%s' % key)
            
            if self.overwrite.IsChecked() or \
                    UserSettings.Get(group = 'cmd', key = 'overwrite', subkey = 'enabled'):
                cmd.append('--overwrite')
            
            # run in Layer Manager
            self.parent.goutput.RunCmd(cmd, switchPage = True,
                                       onDone = self.AddLayers)
        
        self.OnCancel()

    def OnSetDsn(self, event):
        """!Input DXF file defined, update list of layer widget"""
        path = event.GetString()
        if not path:
            return 
        
        data = list()        
        ret = RunCommand('v.in.dxf',
                         quiet = True,
                         parent = self,
                         read = True,
                         flags = 'l',
                         input = path)
        if not ret:
            self.list.LoadData()
            self.btn_run.Enable(False)
            return
            
        for line in ret.splitlines():
            layerId = line.split(':')[0].split(' ')[1]
            layerName = line.split(':')[1].strip()
            grassName = GetValidLayerName(layerName)
            data.append((layerId, layerName.strip(), grassName.strip()))
        
        self.list.LoadData(data)
        if len(data) > 0:
            self.btn_run.Enable(True)
        else:
            self.btn_run.Enable(False)

    def OnCmdDialog(self, event):
        """!Show command dialog"""
        GUI(parent = self, modal = True).ParseCommand(cmd = ['v.in.dxf'])
                
class LayersList(wx.ListCtrl, listmix.ListCtrlAutoWidthMixin,
                 listmix.CheckListCtrlMixin, listmix.TextEditMixin):
    """!List of layers to be imported (dxf, shp...)"""
    def __init__(self, parent, columns, 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)
        listmix.TextEditMixin.__init__(self)
        
        for i in range(len(columns)):
            self.InsertColumn(i, columns[i])
        
        if len(columns) == 3:
            width = (65, 200)
        else:
            width = (65, 180, 110)
        
        for i in range(len(width)):
            self.SetColumnWidth(col = i, width = width[i])
        
        self.Bind(wx.EVT_COMMAND_RIGHT_CLICK, self.OnPopupMenu) #wxMSW
        self.Bind(wx.EVT_RIGHT_UP,            self.OnPopupMenu) #wxGTK

    def LoadData(self, data = None):
        """!Load data into list"""
        self.DeleteAllItems()
        if data is None:
            return
        
        for item in data:
            index = self.InsertStringItem(sys.maxint, str(item[0]))
            for i in range(1, len(item)):
                self.SetStringItem(index, i, "%s" % str(item[i]))
        
        # check by default only on one item
        if len(data) == 1:
            self.CheckItem(index, True)
        
    def OnPopupMenu(self, event):
        """!Show popup menu"""
        if self.GetItemCount() < 1:
            return
        
        if not hasattr(self, "popupDataID1"):
            self.popupDataID1 = wx.NewId()
            self.popupDataID2 = wx.NewId()
            
            self.Bind(wx.EVT_MENU, self.OnSelectAll,  id = self.popupDataID1)
            self.Bind(wx.EVT_MENU, self.OnSelectNone, id = self.popupDataID2)
        
        # generate popup-menu
        menu = wx.Menu()
        menu.Append(self.popupDataID1, _("Select all"))
        menu.Append(self.popupDataID2, _("Deselect all"))
        
        self.PopupMenu(menu)
        menu.Destroy()

    def OnSelectAll(self, event):
        """!Select all items"""
        item = -1
        
        while True:
            item = self.GetNextItem(item)
            if item == -1:
                break
            self.CheckItem(item, True)
        
        event.Skip()
        
    def OnSelectNone(self, event):
        """!Deselect items"""
        item = -1
        
        while True:
            item = self.GetNextItem(item, wx.LIST_STATE_SELECTED)
            if item == -1:
                break
            self.CheckItem(item, False)
        
        event.Skip()
        
    def OnLeftDown(self, event):
        """!Allow editing only output name
        
        Code taken from TextEditMixin class.
        """
        x, y = event.GetPosition()
        
        colLocs = [0]
        loc = 0
        for n in range(self.GetColumnCount()):
            loc = loc + self.GetColumnWidth(n)
            colLocs.append(loc)
        
        col = bisect(colLocs, x + self.GetScrollPos(wx.HORIZONTAL)) - 1
        
        if col == self.GetColumnCount() - 1:
            listmix.TextEditMixin.OnLeftDown(self, event)
        else:
            event.Skip()
        
    def GetLayers(self):
        """!Get list of layers (layer name, output name)"""
        data = []
        item = -1
        while True:
            item = self.GetNextItem(item)
            if item == -1:
                break
            if not self.IsChecked(item):
                continue
            # layer / output name
            data.append((self.GetItem(item, 1).GetText(),
                         self.GetItem(item, self.GetColumnCount() - 1).GetText()))
        
        return data

class SetOpacityDialog(wx.Dialog):
    """!Set opacity of map layers"""
    def __init__(self, parent, id = wx.ID_ANY, title = _("Set Map Layer Opacity"),
                 size = wx.DefaultSize, pos = wx.DefaultPosition,
                 style = wx.DEFAULT_DIALOG_STYLE, opacity = 100):

        self.parent = parent    # GMFrame
        self.opacity = opacity  # current opacity

        super(SetOpacityDialog, self).__init__(parent, id = id, pos = pos,
                                               size = size, style = style, title = title)

        panel = wx.Panel(parent = self, id = wx.ID_ANY)
        
        sizer = wx.BoxSizer(wx.VERTICAL)

        box = wx.GridBagSizer(vgap = 5, hgap = 5)
        self.value = wx.Slider(panel, id = wx.ID_ANY, value = self.opacity,
                               style = wx.SL_HORIZONTAL | wx.SL_AUTOTICKS | \
                                   wx.SL_TOP | wx.SL_LABELS,
                               minValue = 0, maxValue = 100,
                               size = (350, -1))

        box.Add(item = self.value,
                flag = wx.ALIGN_CENTRE, pos = (0, 0), span = (1, 2))
        box.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                   label = _("transparent")),
                pos = (1, 0))
        box.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                   label = _("opaque")),
                flag = wx.ALIGN_RIGHT,
                pos = (1, 1))

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

        line  =  wx.StaticLine(parent = panel, id = wx.ID_ANY,
                             style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.EXPAND | wx.ALIGN_CENTER_VERTICAL | wx.ALL, border = 5)

        # buttons
        btnsizer = wx.StdDialogButtonSizer()

        btnOK = wx.Button(parent = panel, id = wx.ID_OK)
        btnOK.SetDefault()
        btnsizer.AddButton(btnOK)

        btnCancel = wx.Button(parent = panel, id = wx.ID_CANCEL)
        btnsizer.AddButton(btnCancel)

        btnApply = wx.Button(parent = panel, id = wx.ID_APPLY)
        btnApply.Bind(wx.EVT_BUTTON, self.OnApply)
        btnsizer.AddButton(btnApply)
        btnsizer.Realize()

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

        panel.SetSizer(sizer)
        sizer.Fit(panel)

        self.SetSize(self.GetBestSize())

        self.Layout()

    def GetOpacity(self):
        """!Button 'OK' pressed"""
        # return opacity value
        opacity = float(self.value.GetValue()) / 100
        return opacity

    def OnApply(self, event):
        event = wxApplyOpacity(value = self.GetOpacity())
        wx.PostEvent(self, event)

def GetImageHandlers(image):
    """!Get list of supported image handlers"""
    lext = list()
    ltype = list()
    for h in image.GetHandlers():
        lext.append(h.GetExtension())
        
    filetype = ''
    if 'png' in lext:
        filetype += "PNG file (*.png)|*.png|"
        ltype.append({ 'type' : wx.BITMAP_TYPE_PNG,
                       'ext'  : 'png' })
    filetype +=  "BMP file (*.bmp)|*.bmp|"
    ltype.append({ 'type' : wx.BITMAP_TYPE_BMP,
                   'ext'  : 'bmp' })
    if 'gif' in lext:
        filetype += "GIF file (*.gif)|*.gif|"
        ltype.append({ 'type' : wx.BITMAP_TYPE_GIF,
                       'ext'  : 'gif' })
        
    if 'jpg' in lext:
        filetype += "JPG file (*.jpg)|*.jpg|"
        ltype.append({ 'type' : wx.BITMAP_TYPE_JPEG,
                       'ext'  : 'jpg' })

    if 'pcx' in lext:
        filetype += "PCX file (*.pcx)|*.pcx|"
        ltype.append({ 'type' : wx.BITMAP_TYPE_PCX,
                       'ext'  : 'pcx' })
        
    if 'pnm' in lext:
        filetype += "PNM file (*.pnm)|*.pnm|"
        ltype.append({ 'type' : wx.BITMAP_TYPE_PNM,
                       'ext'  : 'pnm' })

    if 'tif' in lext:
        filetype += "TIF file (*.tif)|*.tif|"
        ltype.append({ 'type' : wx.BITMAP_TYPE_TIF,
                       'ext'  : 'tif' })

    if 'xpm' in lext:
        filetype += "XPM file (*.xpm)|*.xpm"
        ltype.append({ 'type' : wx.BITMAP_TYPE_XPM,
                       'ext'  : 'xpm' })
    
    return filetype, ltype

class ImageSizeDialog(wx.Dialog):
    """!Set size for saved graphic file"""
    def __init__(self, parent, id = wx.ID_ANY, title = _("Set image size"),
                 style = wx.DEFAULT_DIALOG_STYLE, **kwargs):
        self.parent = parent
        
        wx.Dialog.__init__(self, parent, id = id, style = style, title = title, **kwargs)
        
        self.panel = wx.Panel(parent = self, id = wx.ID_ANY)
        
        self.box = wx.StaticBox(parent = self.panel, id = wx.ID_ANY,
                                label = ' % s' % _("Image size"))
        
        size = self.parent.GetWindow().GetClientSize()
        self.width = wx.SpinCtrl(parent = self.panel, id = wx.ID_ANY,
                                 style = wx.SP_ARROW_KEYS)
        self.width.SetRange(20, 1e6)
        self.width.SetValue(size.width)
        wx.CallAfter(self.width.SetFocus)
        self.height = wx.SpinCtrl(parent = self.panel, id = wx.ID_ANY,
                                  style = wx.SP_ARROW_KEYS)
        self.height.SetRange(20, 1e6)
        self.height.SetValue(size.height)
        self.template = wx.Choice(parent = self.panel, id = wx.ID_ANY,
                                  size = (125, -1),
                                  choices = [ "",
                                              "640x480",
                                              "800x600",
                                              "1024x768",
                                              "1280x960",
                                              "1600x1200",
                                              "1920x1440" ])
        
        self.btnOK = wx.Button(parent = self.panel, id = wx.ID_OK)
        self.btnOK.SetDefault()
        self.btnCancel = wx.Button(parent = self.panel, id = wx.ID_CANCEL)
        
        self.template.Bind(wx.EVT_CHOICE, self.OnTemplate)
        
        self._layout()
        self.SetSize(self.GetBestSize())
        
    def _layout(self):
        """!Do layout"""
        sizer = wx.BoxSizer(wx.VERTICAL)
        
        # body
        box = wx.StaticBoxSizer(self.box, wx.HORIZONTAL)
        fbox = wx.FlexGridSizer(cols = 2, vgap = 5, hgap = 5)
        fbox.Add(item = wx.StaticText(parent = self.panel, id = wx.ID_ANY,
                                      label = _("Width:")),
                 flag = wx.ALIGN_CENTER_VERTICAL)
        fbox.Add(item = self.width)
        fbox.Add(item = wx.StaticText(parent = self.panel, id = wx.ID_ANY,
                                      label = _("Height:")),
                 flag = wx.ALIGN_CENTER_VERTICAL)
        fbox.Add(item = self.height)
        fbox.Add(item = wx.StaticText(parent = self.panel, id = wx.ID_ANY,
                                      label = _("Template:")),
                 flag = wx.ALIGN_CENTER_VERTICAL)
        fbox.Add(item = self.template)
        
        box.Add(item = fbox, proportion = 1,
                flag = wx.EXPAND | wx.ALL, border = 5)
        sizer.Add(item = box, proportion = 1,
                  flag = wx.EXPAND | wx.ALL, border = 3)
        
        # buttons
        btnsizer = wx.StdDialogButtonSizer()
        btnsizer.AddButton(self.btnOK)
        btnsizer.AddButton(self.btnCancel)
        btnsizer.Realize()

        sizer.Add(item = btnsizer, proportion = 0,
                  flag = wx.EXPAND | wx.ALIGN_RIGHT | wx.ALL, border = 5)
        
        self.panel.SetSizer(sizer)
        sizer.Fit(self.panel)
        self.Layout()
    
    def GetValues(self):
        """!Get width/height values"""
        return self.width.GetValue(), self.height.GetValue()
    
    def OnTemplate(self, event):
        """!Template selected"""
        sel = event.GetString()
        if not sel:
            width, height = self.parent.GetWindow().GetClientSize()
        else:
            width, height = map(int, sel.split('x'))
        self.width.SetValue(width)
        self.height.SetValue(height)

class SymbolDialog(wx.Dialog):
    """!Dialog for GRASS symbols selection.
    
    Dialog is called in gui_core::forms module.
    """
    def __init__(self, parent, symbolPath, currentSymbol = None, title = _("Symbols")):
        """!Dialog constructor.
        
        It is assumed that symbolPath contains folders with symbols.
        
        @param parent dialog parent
        @param symbolPath absolute path to symbols
        @param currentSymbol currently selected symbol (e.g. 'basic/x')
        @param title dialog title
        """
        wx.Dialog.__init__(self, parent = parent, title = title, id = wx.ID_ANY)
        
        self.symbolPath = symbolPath
        self.currentSymbol = currentSymbol # default basic/x
        self.selected = None
        self.selectedDir = None
        
        self._layout()
        
    def _layout(self):
        mainPanel = wx.Panel(self, id = wx.ID_ANY)
        mainSizer = wx.BoxSizer(wx.VERTICAL)
        vSizer = wx.BoxSizer( wx.VERTICAL)
        fgSizer = wx.FlexGridSizer(rows = 2, vgap = 5, hgap = 5)
        self.folderChoice = wx.Choice(mainPanel, id = wx.ID_ANY, choices = os.listdir(self.symbolPath))
        self.folderChoice.Bind(wx.EVT_CHOICE, self.OnFolderSelect)
        
        fgSizer.Add(item = wx.StaticText(mainPanel, id = wx.ID_ANY, label = _("Symbol directory:")),
                   proportion = 0,
                   flag = wx.ALIGN_CENTER_VERTICAL)
                   
        fgSizer.Add(item = self.folderChoice, proportion = 0,
                   flag = wx.ALIGN_CENTER, border = 0)
                   
        self.infoLabel = wx.StaticText(mainPanel, id = wx.ID_ANY)
        fgSizer.Add(wx.StaticText(mainPanel, id = wx.ID_ANY, label = _("Symbol name:")), 
                    flag = wx.ALIGN_CENTRE_VERTICAL)
        fgSizer.Add(self.infoLabel, proportion = 0, 
                    flag = wx.ALIGN_CENTRE_VERTICAL)
        vSizer.Add(fgSizer, proportion = 0, flag = wx.ALL, border = 5)
        
        self.panels = self._createSymbolPanels(mainPanel)
        for panel in self.panels:
            vSizer.Add(panel, proportion = 0, flag = wx.ALL | wx.EXPAND, border = 5)
            panel.Bind(EVT_SYMBOL_SELECTION_CHANGED, self.SelectionChanged)
        
        mainSizer.Add(vSizer, proportion = 1, flag = wx.ALL| wx.EXPAND, border = 5)
        self.btnCancel = wx.Button(parent = mainPanel, id = wx.ID_CANCEL)
        self.btnOK     = wx.Button(parent = mainPanel, id = wx.ID_OK)
        self.btnOK.SetDefault()
        self.btnOK.Enable(False)
        
        # buttons
        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(self.btnCancel)
        btnSizer.AddButton(self.btnOK)
        btnSizer.Realize()
        mainSizer.Add(item = btnSizer, proportion = 0,
                      flag = wx.EXPAND | wx.ALL, border = 5)
                      
        # show panel with the largest number of images and fit size
        count = []
        for folder in os.listdir(self.symbolPath):
            count.append(len(os.listdir(os.path.join(self.symbolPath, folder))))
            
        index = count.index(max(count))
        self.folderChoice.SetSelection(index)
        self.OnFolderSelect(None)
        self.infoLabel.Show()
        
        mainPanel.SetSizerAndFit(mainSizer)
        self.SetSize(self.GetBestSize())
        
        # show currently selected symbol
        if self.currentSymbol:
            # set directory
            self.selectedDir, self.selected = os.path.split(self.currentSymbol)
            self.folderChoice.SetStringSelection(self.selectedDir)
            # select symbol
            panelIdx = self.folderChoice.GetSelection()
            for panel in self.symbolPanels[panelIdx]:
                if panel.GetName() == self.selected:
                    panel.Select()
        else:
            self.folderChoice.SetSelection(0)
            
        self.OnFolderSelect(None)
        
    def _createSymbolPanels(self, parent):
        """!Creates multiple panels with symbols.
        
        Panels are shown/hidden according to selected folder."""
        folders = os.listdir(self.symbolPath)
        
        panels = []
        self.symbolPanels = []
        maxImages = 0
        
        for folder in folders:
            panel = wx.Panel(parent, style = wx.BORDER_RAISED)
            sizer = wx.GridSizer(cols = 6, vgap = 3, hgap = 3)
            images = self._getSymbols(path = os.path.join(self.symbolPath, folder))
        
            symbolPanels = []
            for img in images:
                iP = SingleSymbolPanel(parent = panel, symbolPath = img)
                sizer.Add(item = iP, proportion = 0, flag = wx.ALIGN_CENTER)
                symbolPanels.append(iP)
            
            panel.SetSizerAndFit(sizer)
            panel.Hide()
            panels.append(panel)
            self.symbolPanels.append(symbolPanels)
            
        return panels
        
    def _getSymbols(self, path):
        # we assume that images are in subfolders (1 level only)
        imageList = []
        for image in os.listdir(path):
            imageList.append(os.path.join(path, image))
                
        return sorted(imageList)
            
    def OnFolderSelect(self, event):
        """!Selected folder with symbols changed."""
        idx = self.folderChoice.GetSelection()
        for i in range(len(self.panels)):
            sizer = self.panels[i].GetContainingSizer()
            sizer.Show(self.panels[i], i == idx, recursive = True)
            sizer.Layout()
        
        if self.selectedDir == self.folderChoice.GetStringSelection():
            self.btnOK.Enable()
            self.infoLabel.SetLabel(self.selected)
        else:
            self.btnOK.Disable()
            self.infoLabel.SetLabel('')
        
    def SelectionChanged(self, event):
        """!Selected symbol changed."""
        if event.doubleClick:
            self.EndModal(wx.ID_OK)
        # deselect all
        for i in range(len(self.panels)):
            for panel in self.symbolPanels[i]:
                if panel.GetName() != event.name:
                    panel.Deselect()
                
        self.btnOK.Enable()
        
        self.selected = event.name
        self.selectedDir = self.folderChoice.GetStringSelection()
        
        self.infoLabel.SetLabel(event.name)
        
    def GetSelectedSymbolName(self):
        """!Returns currently selected symbol name (e.g. 'basic/x').
        """ 
        # separator must be '/' and not dependent on OS
        return self.selectedDir + '/' + self.selected

    def GetSelectedSymbolPath(self):
        """!Returns currently selected symbol full path.
        """
        return os.path.join(self.symbolPath, self.selectedDir, self.selected)

class TextEntryDialog(wx.Dialog):
    """!Simple dialog with text field. 

    It differs from wx.TextEntryDialog because it allows adding validator.
    """
    def __init__(self, parent, message, caption='',
                 defaultValue='', pos=wx.DefaultPosition, validator=wx.DefaultValidator,
                 style=wx.OK | wx.CANCEL):
        wx.Dialog.__init__(self, parent=parent, id=wx.ID_ANY, title=caption, pos=pos)

        vbox = wx.BoxSizer(wx.VERTICAL)

        stline = wx.StaticText(self, id=wx.ID_ANY, label=message)
        vbox.Add(item=stline, proportion=0, flag=wx.EXPAND | wx.ALL, border=10)

        self._textCtrl = wx.TextCtrl(self, id=wx.ID_ANY, size = (300, -1),
                                     value=defaultValue, validator=validator)
        vbox.Add(item=self._textCtrl, proportion=0, flag=wx.EXPAND | wx.LEFT | wx.RIGHT, border=10)
        self._textCtrl.SetFocus()

        sizer = self.CreateSeparatedButtonSizer(style)
        vbox.Add(item=sizer, proportion=1, flag=wx.EXPAND | wx.ALL, border=10)

        self.SetSizerAndFit(vbox)
        
    def GetValue(self):
        return self._textCtrl.GetValue()

    def SetValue(self, value):
        self._textCtrl.SetValue(value)


class HyperlinkDialog(wx.Dialog):
    """!Dialog for displaying message with hyperlink."""
    def __init__(self, parent, title, message, hyperlink,
                hyperlinkLabel=None, style=wx.OK):
        """!Constructor

        @param parent gui parent         
        @param title dialog title
        @param message message
        @param hyperlink url
        @param hyperlinkLabel label shown instead of url
        @param style button style
        """
        wx.Dialog.__init__(self, parent=parent, id=wx.ID_ANY, title=title,
                           style=wx.DEFAULT_DIALOG_STYLE)

        sizer = wx.BoxSizer(wx.VERTICAL)

        label = wx.StaticText(self, label=message)
        sizer.Add(item=label, proportion=0, flag=wx.ALIGN_CENTRE|wx.ALL, border=10)
        hyperlinkLabel = hyperlinkLabel if hyperlinkLabel else hyperlink
        hyperlinkCtrl = wx.HyperlinkCtrl(self, id=wx.ID_ANY,
                                         label=hyperlinkLabel, url=hyperlink,
                                         style=wx.HL_ALIGN_LEFT|wx.HL_CONTEXTMENU)
        sizer.Add(item=hyperlinkCtrl, proportion=0, flag=wx.EXPAND|wx.ALL, border=10)        

        btnsizer = self.CreateSeparatedButtonSizer(style)
        sizer.Add(item=btnsizer, proportion=1, flag=wx.EXPAND | wx.ALL, border=10)
    
        self.SetSizer(sizer)
        sizer.Fit(self)