"""
@package gmodeler.dialogs

@brief wxGUI Graphical Modeler - dialogs

Classes:
 - dialogs::ModelDataDialog
 - dialogs::ModelSearchDialog
 - dialogs::ModelRelationDialog
 - dialogs::ModelItemDialog
 - dialogs::ModelLoopDialog
 - dialogs::ModelConditionDialog
 - dialogs::ModelListCtrl
 - dialogs::ValiableListCtrl
 - dialogs::ItemListCtrl
 - dialogs::ItemCheckListCtrl

(C) 2010-2016 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>
"""

import os
import sys
import six

import wx
import wx.lib.mixins.listctrl as listmix

from core import globalvar
from core import utils
from gui_core.widgets import SearchModuleWidget, SimpleValidator
from core.gcmd import GError, EncodeString
from gui_core.dialogs import SimpleDialog, MapLayersDialogForModeler
from gui_core.prompt import GPromptSTC
from gui_core.gselect import Select, ElementSelect
from gmodeler.model import *
from lmgr.menudata import LayerManagerMenuData
from gui_core.wrap import Button, StaticText, StaticBox, TextCtrl, \
    Menu

from grass.script import task as gtask


class ModelDataDialog(SimpleDialog):
    """Data item properties dialog"""

    def __init__(self, parent, shape, title=_("Data properties")):
        self.parent = parent
        self.shape = shape

        label, etype = self._getLabel()
        self.etype = etype
        SimpleDialog.__init__(self, parent, title)

        self.element = Select(
            parent=self.panel,
            type=self.shape.GetPrompt(),
            validator=SimpleValidator(
                callback=self.ValidatorCallback))
        if shape.GetValue():
            self.element.SetValue(shape.GetValue())

        self.Bind(wx.EVT_BUTTON, self.OnOK, self.btnOK)
        self.Bind(wx.EVT_BUTTON, self.OnCancel, self.btnCancel)
        if self.etype:
            self.typeSelect = ElementSelect(
                parent=self.panel,
                elements=[
                    'raster',
                    'raster_3d',
                    'vector'],
                size=globalvar.DIALOG_GSELECT_SIZE)
            self.typeSelect.Bind(wx.EVT_CHOICE, self.OnType)
            self.typeSelect.SetSelection(0)
            self.element.SetType('raster')

        if shape.GetValue():
            self.btnOK.Enable()

        self._layout()
        self.SetMinSize(self.GetSize())

    def _getLabel(self):
        etype = False
        prompt = self.shape.GetPrompt()
        if prompt == 'raster':
            label = _('Name of raster map:')
        elif prompt == 'vector':
            label = _('Name of vector map:')
        else:
            etype = True
            label = _('Name of element:')

        return label, etype

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

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

    def GetType(self):
        """Get element type"""
        if not self.etype:
            return
        return self.element.tcp.GetType()

    def OnType(self, event):
        """Select element type"""
        evalue = self.typeSelect.GetValue(event.GetString())
        self.element.SetType(evalue)

    def OnOK(self, event):
        """Ok pressed"""
        self.shape.SetValue(self.element.GetValue())
        if self.etype:
            elem = self.GetType()
            if elem == 'raster':
                self.shape.SetPrompt('raster')
            elif elem == 'vector':
                self.shape.SetPrompt('vector')
            elif elem == 'raster_3d':
                self.shape.SetPrompt('raster_3d')

        self.parent.canvas.Refresh()
        self.parent.SetStatusText('', 0)
        self.shape.SetPropDialog(None)

        if self.IsModal():
            event.Skip()
        else:
            self.Destroy()

    def OnCancel(self, event):
        """Cancel pressed"""
        self.shape.SetPropDialog(None)
        if self.IsModal():
            event.Skip()
        else:
            self.Destroy()


class ModelSearchDialog(wx.Dialog):

    def __init__(self, parent, title=_("Add GRASS command to the model"),
                 style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER, **kwargs):
        """Graphical modeler module search window

        :param parent: parent window
        :param id: window id
        :param title: window title
        :param kwargs: wx.Dialogs' arguments
        """
        self.parent = parent

        wx.Dialog.__init__(
            self,
            parent=parent,
            id=wx.ID_ANY,
            title=title,
            **kwargs)
        self.SetName("ModelerDialog")
        self.SetIcon(
            wx.Icon(
                os.path.join(
                    globalvar.ICONDIR,
                    'grass.ico'),
                wx.BITMAP_TYPE_ICO))

        self._command = None
        self.panel = wx.Panel(parent=self, id=wx.ID_ANY)

        self.cmdBox = StaticBox(parent=self.panel, id=wx.ID_ANY,
                                label=" %s " % _("Command"))
        self.labelBox = StaticBox(parent=self.panel, id=wx.ID_ANY,
                                  label=" %s " % _("Label and comment"))

        # menu data for search widget and prompt
        menuModel = LayerManagerMenuData()

        self.cmd_prompt = GPromptSTC(
            parent=self, menuModel=menuModel.GetModel())
        self.cmd_prompt.promptRunCmd.connect(self.OnCommand)
        self.cmd_prompt.commandSelected.connect(
            lambda command: self.label.SetValue(command))
        self.search = SearchModuleWidget(parent=self.panel,
                                         model=menuModel.GetModel(),
                                         showTip=True)
        self.search.moduleSelected.connect(
            lambda name: self.cmd_prompt.SetTextAndFocus(name + ' '))
        wx.CallAfter(self.cmd_prompt.SetFocus)

        self.label = TextCtrl(parent=self.panel, id=wx.ID_ANY)
        self.comment = TextCtrl(
            parent=self.panel,
            id=wx.ID_ANY,
            style=wx.TE_MULTILINE)

        self.btnCancel = Button(self.panel, wx.ID_CANCEL)
        self.btnOk = Button(self.panel, wx.ID_OK)
        self.btnOk.SetDefault()

        self.Bind(wx.EVT_BUTTON, self.OnOk, self.btnOk)
        self.Bind(wx.EVT_BUTTON, self.OnCancel, self.btnCancel)

        self._layout()

        self.SetSize((500, -1))

    def _layout(self):
        cmdSizer = wx.StaticBoxSizer(self.cmdBox, wx.VERTICAL)
        cmdSizer.Add(self.cmd_prompt, proportion=1,
                     flag=wx.EXPAND)
        labelSizer = wx.StaticBoxSizer(self.labelBox, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(hgap=5, vgap=5)
        gridSizer.Add(StaticText(parent=self.panel, id=wx.ID_ANY,
                                 label=_("Label:")),
                      flag=wx.ALIGN_CENTER_VERTICAL, pos=(0, 0))
        gridSizer.Add(self.label, pos=(0, 1), flag=wx.EXPAND)
        gridSizer.Add(StaticText(parent=self.panel, id=wx.ID_ANY,
                                 label=_("Comment:")),
                      flag=wx.ALIGN_CENTER_VERTICAL, pos=(1, 0))
        gridSizer.Add(self.comment, pos=(1, 1), flag=wx.EXPAND)
        gridSizer.AddGrowableRow(1)
        gridSizer.AddGrowableCol(1)
        labelSizer.Add(gridSizer, proportion=1, flag=wx.EXPAND)

        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(self.btnCancel)
        btnSizer.AddButton(self.btnOk)
        btnSizer.Realize()

        mainSizer = wx.BoxSizer(wx.VERTICAL)
        mainSizer.Add(self.search, proportion=0,
                      flag=wx.EXPAND | wx.ALL, border=3)
        mainSizer.Add(cmdSizer, proportion=1,
                      flag=wx.EXPAND | wx.LEFT | wx.RIGHT | wx.TOP, border=3)
        mainSizer.Add(labelSizer, proportion=1,
                      flag=wx.EXPAND | wx.LEFT | wx.RIGHT | wx.TOP, border=3)
        mainSizer.Add(btnSizer, proportion=0,
                      flag=wx.EXPAND | wx.ALL | wx.ALIGN_CENTER, border=5)

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

        self.Layout()

    def GetPanel(self):
        """Get dialog panel"""
        return self.panel

    def _getCmd(self):
        line = self.cmd_prompt.GetCurLine()[0].strip()
        if len(line) == 0:
            cmd = list()
        else:
            try:
                cmd = utils.split(str(line))
            except UnicodeError:
                cmd = utils.split(EncodeString((line)))
        return cmd

    def GetCmd(self):
        """Get command"""
        return self._command

    def GetLabel(self):
        """Get label and comment"""
        return self.label.GetValue(), self.comment.GetValue()

    def ValidateCmd(self, cmd):
        if len(cmd) < 1:
            GError(parent=self,
                   message=_("Command not defined.\n\n"
                             "Unable to add new action to the model."))
            return False

        if cmd[0] not in globalvar.grassCmd:
            GError(
                parent=self, message=_(
                    "'%s' is not a GRASS module.\n\n"
                    "Unable to add new action to the model.") %
                cmd[0])
            return False
        return True

    def OnCommand(self, cmd):
        """Command in prompt confirmed"""
        if self.ValidateCmd(cmd):
            self._command = cmd
            self.EndModal(wx.ID_OK)

    def OnOk(self, event):
        """Button 'OK' pressed"""
        cmd = self._getCmd()
        if self.ValidateCmd(cmd):
            self._command = cmd
            self.EndModal(wx.ID_OK)

    def OnCancel(self, event):
        """Cancel pressed, close window"""
        self.Hide()

    def Reset(self):
        """Reset dialog"""
        self.search.Reset()
        self.label.SetValue('')
        self.comment.SetValue('')
        self.cmd_prompt.OnCmdErase(None)
        self.cmd_prompt.SetFocus()


class ModelRelationDialog(wx.Dialog):
    """Relation properties dialog"""

    def __init__(self, parent, shape, id=wx.ID_ANY,
                 title=_("Relation properties"),
                 style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER, **kwargs):
        self.parent = parent
        self.shape = shape

        options = self._getOptions()
        if not options:
            self.valid = False
            return

        self.valid = True
        wx.Dialog.__init__(self, parent, id, title, style=style, **kwargs)
        self.SetIcon(
            wx.Icon(
                os.path.join(
                    globalvar.ICONDIR,
                    'grass.ico'),
                wx.BITMAP_TYPE_ICO))

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

        self.fromBox = StaticBox(parent=self.panel, id=wx.ID_ANY,
                                 label=" %s " % _("From"))
        self.toBox = StaticBox(parent=self.panel, id=wx.ID_ANY,
                               label=" %s " % _("To"))

        self.option = wx.ComboBox(parent=self.panel, id=wx.ID_ANY,
                                  style=wx.CB_READONLY,
                                  choices=options)
        self.option.Bind(wx.EVT_COMBOBOX, self.OnOption)

        self.btnCancel = Button(self.panel, wx.ID_CANCEL)
        self.btnOk = Button(self.panel, wx.ID_OK)
        self.btnOk.Enable(False)

        self._layout()

    def _layout(self):
        mainSizer = wx.BoxSizer(wx.VERTICAL)

        fromSizer = wx.StaticBoxSizer(self.fromBox, wx.VERTICAL)
        self._layoutShape(shape=self.shape.GetFrom(), sizer=fromSizer)
        toSizer = wx.StaticBoxSizer(self.toBox, wx.VERTICAL)
        self._layoutShape(shape=self.shape.GetTo(), sizer=toSizer)

        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(self.btnCancel)
        btnSizer.AddButton(self.btnOk)
        btnSizer.Realize()

        mainSizer.Add(fromSizer, proportion=0,
                      flag=wx.EXPAND | wx.ALL, border=5)
        mainSizer.Add(toSizer, proportion=0, flag=wx.EXPAND |
                      wx.LEFT | wx.RIGHT | wx.BOTTOM, border=5)
        mainSizer.Add(btnSizer, proportion=0,
                      flag=wx.EXPAND | wx.ALL | wx.ALIGN_CENTER, border=5)

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

        self.Layout()
        self.SetSize(self.GetBestSize())

    def _layoutShape(self, shape, sizer):
        if isinstance(shape, ModelData):
            sizer.Add(StaticText(parent=self.panel, id=wx.ID_ANY,
                                 label=_("Data: %s") % shape.GetLog()),
                      proportion=1, flag=wx.EXPAND | wx.ALL,
                      border=5)
        elif isinstance(shape, ModelAction):
            gridSizer = wx.GridBagSizer(hgap=5, vgap=5)
            gridSizer.Add(StaticText(parent=self.panel, id=wx.ID_ANY,
                                     label=_("Command:")),
                          pos=(0, 0))
            gridSizer.Add(StaticText(parent=self.panel, id=wx.ID_ANY,
                                     label=shape.GetLabel()),
                          pos=(0, 1))
            gridSizer.Add(StaticText(parent=self.panel, id=wx.ID_ANY,
                                     label=_("Option:")),
                          flag=wx.ALIGN_CENTER_VERTICAL,
                          pos=(1, 0))
            gridSizer.Add(self.option,
                          pos=(1, 1))
            sizer.Add(gridSizer,
                      proportion=1, flag=wx.EXPAND | wx.ALL,
                      border=5)

    def _getOptions(self):
        """Get relevant options"""
        items = []
        fromShape = self.shape.GetFrom()
        if not isinstance(fromShape, ModelData):
            GError(parent=self.parent,
                   message=_("Relation doesn't start with data item.\n"
                             "Unable to add relation."))
            return items

        toShape = self.shape.GetTo()
        if not isinstance(toShape, ModelAction):
            GError(parent=self.parent,
                   message=_("Relation doesn't point to GRASS command.\n"
                             "Unable to add relation."))
            return items

        prompt = fromShape.GetPrompt()
        task = toShape.GetTask()
        for p in task.get_options()['params']:
            if p.get('prompt', '') == prompt and \
                    'name' in p:
                items.append(p['name'])

        if not items:
            GError(parent=self.parent,
                   message=_("No relevant option found.\n"
                             "Unable to add relation."))
        return items

    def GetOption(self):
        """Get selected option"""
        return self.option.GetStringSelection()

    def IsValid(self):
        """Check if relation is valid"""
        return self.valid

    def OnOption(self, event):
        """Set option"""
        if event.GetString():
            self.btnOk.Enable()
        else:
            self.btnOk.Enable(False)


class ModelItemDialog(wx.Dialog):
    """Abstract item properties dialog"""

    def __init__(self, parent, shape, title, id=wx.ID_ANY,
                 style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER, **kwargs):
        self.parent = parent
        self.shape = shape

        wx.Dialog.__init__(
            self,
            parent,
            id,
            title=title,
            style=style,
            **kwargs)

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

        self.condBox = StaticBox(parent=self.panel, id=wx.ID_ANY,
                                 label=" %s " % _("Condition"))
        self.condText = TextCtrl(parent=self.panel, id=wx.ID_ANY,
                                 value=shape.GetLabel())

        self.itemList = ItemCheckListCtrl(parent=self.panel,
                                          columns=[_("Label"),
                                                   _("Command")],
                                          shape=shape,
                                          frame=parent)

        self.itemList.Populate(self.parent.GetModel().GetItems())

        self.btnCancel = Button(parent=self.panel, id=wx.ID_CANCEL)
        self.btnOk = Button(parent=self.panel, id=wx.ID_OK)
        self.btnOk.SetDefault()

    def _layout(self):
        """Do layout (virtual method)"""
        pass

    def GetCondition(self):
        """Get loop condition"""
        return self.condText.GetValue()


class ModelLoopDialog(ModelItemDialog):
    """Loop properties dialog"""

    def __init__(self, parent, shape, id=wx.ID_ANY, title=_("Loop properties"),
                 style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER, **kwargs):
        ModelItemDialog.__init__(self, parent, shape, title,
                                 style=style, **kwargs)

        self.listBox = StaticBox(parent=self.panel, id=wx.ID_ANY,
                                 label=" %s " % _("List of items in loop"))

        self.btnSeries = Button(parent=self.panel, id=wx.ID_ANY,
                                   label=_("Series"))
        self.btnSeries.SetToolTip(
            _("Define map series as condition for the loop"))
        self.btnSeries.Bind(wx.EVT_BUTTON, self.OnSeries)

        self._layout()
        self.SetMinSize(self.GetSize())
        self.SetSize((500, 400))

    def _layout(self):
        """Do layout"""
        sizer = wx.BoxSizer(wx.VERTICAL)

        condSizer = wx.StaticBoxSizer(self.condBox, wx.HORIZONTAL)
        condSizer.Add(self.condText, proportion=1,
                      flag=wx.ALL, border=3)
        condSizer.Add(self.btnSeries, proportion=0,
                      flag=wx.EXPAND)

        listSizer = wx.StaticBoxSizer(self.listBox, wx.VERTICAL)
        listSizer.Add(self.itemList, proportion=1,
                      flag=wx.EXPAND | wx.ALL, border=3)

        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(self.btnCancel)
        btnSizer.AddButton(self.btnOk)
        btnSizer.Realize()

        sizer.Add(condSizer, proportion=0,
                  flag=wx.EXPAND | wx.ALL, border=3)
        sizer.Add(listSizer, proportion=1,
                  flag=wx.EXPAND | wx.LEFT | wx.RIGHT, border=3)
        sizer.Add(btnSizer, proportion=0,
                  flag=wx.EXPAND | wx.ALL | wx.ALIGN_CENTER, border=5)

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

        self.Layout()

    def GetItems(self):
        """Get list of selected actions"""
        return self.itemList.GetItems()

    def OnSeries(self, event):
        """Define map series as condition"""
        dialog = MapLayersDialogForModeler(
            parent=self, title=_("Define series of maps"))
        if dialog.ShowModal() != wx.ID_OK:
            dialog.Destroy()
            return

        cond = dialog.GetDSeries()
        if not cond:
            cond = 'map in %s' % map(lambda x: str(x), dialog.GetMapLayers())

        self.condText.SetValue(cond)

        dialog.Destroy()


class ModelConditionDialog(ModelItemDialog):
    """Condition properties dialog"""

    def __init__(self, parent, shape, id=wx.ID_ANY,
                 title=_("If-else properties"),
                 style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER, **kwargs):
        ModelItemDialog.__init__(self, parent, shape, title,
                                 style=style, **kwargs)

        self.listBoxIf = StaticBox(
            parent=self.panel, id=wx.ID_ANY, label=" %s " %
            _("List of items in 'if' block"))
        self.itemListIf = self.itemList
        self.itemListIf.SetName('IfBlockList')

        self.listBoxElse = StaticBox(
            parent=self.panel, id=wx.ID_ANY, label=" %s " %
            _("List of items in 'else' block"))
        self.itemListElse = ItemCheckListCtrl(parent=self.panel,
                                              columns=[_("Label"),
                                                       _("Command")],
                                              shape=shape, frame=parent)
        self.itemListElse.SetName('ElseBlockList')
        self.itemListElse.Populate(self.parent.GetModel().GetItems())

        self._layout()
        self.SetMinSize(self.GetSize())
        self.SetSize((500, 400))

    def _layout(self):
        """Do layout"""
        sizer = wx.BoxSizer(wx.VERTICAL)

        condSizer = wx.StaticBoxSizer(self.condBox, wx.VERTICAL)
        condSizer.Add(self.condText, proportion=1,
                      flag=wx.EXPAND)

        listIfSizer = wx.StaticBoxSizer(self.listBoxIf, wx.VERTICAL)
        listIfSizer.Add(self.itemListIf, proportion=1,
                        flag=wx.EXPAND)
        listElseSizer = wx.StaticBoxSizer(self.listBoxElse, wx.VERTICAL)
        listElseSizer.Add(self.itemListElse, proportion=1,
                          flag=wx.EXPAND)

        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(self.btnCancel)
        btnSizer.AddButton(self.btnOk)
        btnSizer.Realize()

        sizer.Add(condSizer, proportion=0,
                  flag=wx.EXPAND | wx.ALL, border=3)
        sizer.Add(listIfSizer, proportion=1,
                  flag=wx.EXPAND | wx.LEFT | wx.RIGHT, border=3)
        sizer.Add(listElseSizer, proportion=1,
                  flag=wx.EXPAND | wx.LEFT | wx.RIGHT, border=3)
        sizer.Add(btnSizer, proportion=0,
                  flag=wx.EXPAND | wx.ALL | wx.ALIGN_CENTER, border=5)

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

        self.Layout()

    def OnCheckItemIf(self, index, flag):
        """Item in if-block checked/unchecked"""
        if flag is False:
            return

        aId = int(self.itemListIf.GetItem(index, 0).GetText())
        if aId in self.itemListElse.GetItems()['checked']:
            self.itemListElse.CheckItemById(aId, False)

    def OnCheckItemElse(self, index, flag):
        """Item in else-block checked/unchecked"""
        if flag is False:
            return

        aId = int(self.itemListElse.GetItem(index, 0).GetText())
        if aId in self.itemListIf.GetItems()['checked']:
            self.itemListIf.CheckItemById(aId, False)

    def GetItems(self):
        """Get items"""
        return {'if': self.itemListIf.GetItems(),
                'else': self.itemListElse.GetItems()}


class ModelListCtrl(wx.ListCtrl,
                    listmix.ListCtrlAutoWidthMixin,
                    listmix.TextEditMixin):

    def __init__(
            self, parent, columns, frame, id=wx.ID_ANY, columnsNotEditable=[],
            style=wx.LC_REPORT | wx.BORDER_NONE | wx.LC_HRULES | wx.LC_VRULES, **
            kwargs):
        """List of model variables"""
        self.parent = parent
        self.columns = columns
        self.shape = None
        self.frame = frame
        self.columnNotEditable = columnsNotEditable

        wx.ListCtrl.__init__(self, parent, id=id, style=style, **kwargs)
        listmix.ListCtrlAutoWidthMixin.__init__(self)
        listmix.TextEditMixin.__init__(self)

        i = 0
        for col in columns:
            self.InsertColumn(i, col)
            self.SetColumnWidth(i, wx.LIST_AUTOSIZE_USEHEADER)
            i += 1

        self.itemDataMap = {}  # requested by sorter
        self.itemCount = 0

        self.Bind(wx.EVT_LIST_BEGIN_LABEL_EDIT, self.OnBeginEdit)
        self.Bind(wx.EVT_LIST_END_LABEL_EDIT, self.OnEndEdit)
        self.Bind(wx.EVT_LIST_COL_CLICK, self.OnColClick)
        self.Bind(wx.EVT_COMMAND_RIGHT_CLICK, self.OnRightUp)  # wxMSW
        self.Bind(wx.EVT_RIGHT_UP, self.OnRightUp)  # wxGTK

    def OnBeginEdit(self, event):
        """Editing of item started"""
        if self.columnNotEditable and event.m_col in self.columnNotEditable:
            event.Veto()
            self.SetItemState(
                event.m_itemIndex,
                wx.LIST_STATE_SELECTED,
                wx.LIST_STATE_SELECTED | wx.LIST_STATE_FOCUSED)
        else:
            event.Allow()

    def OnEndEdit(self, event):
        """Finish editing of item"""
        pass

    def GetListCtrl(self):
        """Used by ColumnSorterMixin"""
        return self

    def OnColClick(self, event):
        """Click on column header (order by)"""
        event.Skip()


class VariableListCtrl(ModelListCtrl):

    def __init__(self, parent, columns, **kwargs):
        """List of model variables"""
        ModelListCtrl.__init__(self, parent, columns, **kwargs)

        self.SetColumnWidth(2, 200)  # default value

    def GetData(self):
        """Get list data"""
        return self.itemDataMap

    def Populate(self, data):
        """Populate the list"""
        self.itemDataMap = dict()
        i = 0
        for name, values in six.iteritems(data):
            self.itemDataMap[i] = [name, values['type'],
                                   values.get('value', ''),
                                   values.get('description', '')]
            i += 1

        self.itemCount = len(self.itemDataMap.keys())
        self.DeleteAllItems()
        i = 0
        for name, vtype, value, desc in six.itervalues(self.itemDataMap):
            index = self.InsertStringItem(i, name)
            self.SetStringItem(index, 0, name)
            self.SetStringItem(index, 1, vtype)
            self.SetStringItem(index, 2, value)
            self.SetStringItem(index, 3, desc)
            self.SetItemData(index, i)
            i += 1

    def Append(self, name, vtype, value, desc):
        """Append new item to the list

        :return: None on success
        :return: error string
        """
        for iname, ivtype, ivalue, idesc in six.itervalues(self.itemDataMap):
            if iname == name:
                return _("Variable <%s> already exists in the model. "
                         "Adding variable failed.") % name

        index = self.InsertStringItem(self.GetItemCount(), name)
        self.SetStringItem(index, 0, name)
        self.SetStringItem(index, 1, vtype)
        self.SetStringItem(index, 2, value)
        self.SetStringItem(index, 3, desc)
        self.SetItemData(index, self.itemCount)

        self.itemDataMap[self.itemCount] = [name, vtype, value, desc]
        self.itemCount += 1

        return None

    def OnRemove(self, event):
        """Remove selected variable(s) from the model"""
        item = self.GetFirstSelected()
        while item != -1:
            self.DeleteItem(item)
            del self.itemDataMap[item]
            item = self.GetFirstSelected()
        self.parent.UpdateModelVariables()

        event.Skip()

    def OnRemoveAll(self, event):
        """Remove all variable(s) from the model"""
        dlg = wx.MessageBox(
            parent=self,
            message=_(
                "Do you want to delete all variables from "
                "the model?"),
            caption=_("Delete variables"),
            style=wx.YES_NO | wx.CENTRE)
        if dlg != wx.YES:
            return

        self.DeleteAllItems()
        self.itemDataMap = dict()

        self.parent.UpdateModelVariables()

    def OnEndEdit(self, event):
        """Finish editing of item"""
        itemIndex = event.GetIndex()
        columnIndex = event.GetColumn()
        nameOld = self.GetItem(itemIndex, 0).GetText()

        if columnIndex == 0:  # TODO
            event.Veto()

        self.itemDataMap[itemIndex][columnIndex] = event.GetText()

        self.parent.UpdateModelVariables()

    def OnReload(self, event):
        """Reload list of variables"""
        self.Populate(self.parent.parent.GetModel().GetVariables())

    def OnRightUp(self, event):
        """Mouse right button up"""
        if not hasattr(self, "popupID1"):
            self.popupID1 = wx.NewId()
            self.popupID2 = wx.NewId()
            self.popupID3 = wx.NewId()
            self.Bind(wx.EVT_MENU, self.OnRemove, id=self.popupID1)
            self.Bind(wx.EVT_MENU, self.OnRemoveAll, id=self.popupID2)
            self.Bind(wx.EVT_MENU, self.OnReload, id=self.popupID3)

        # generate popup-menu
        menu = Menu()
        menu.Append(self.popupID1, _("Delete selected"))
        menu.Append(self.popupID2, _("Delete all"))
        if self.GetFirstSelected() == -1:
            menu.Enable(self.popupID1, False)
            menu.Enable(self.popupID2, False)

        menu.AppendSeparator()
        menu.Append(self.popupID3, _("Reload"))

        self.PopupMenu(menu)
        menu.Destroy()


class ItemListCtrl(ModelListCtrl):

    def __init__(self, parent, columns, frame, disablePopup=False, **kwargs):
        """List of model actions"""
        self.disablePopup = disablePopup

        ModelListCtrl.__init__(self, parent, columns, frame, **kwargs)
        self.itemIdMap = list()

        self.SetColumnWidth(0, 100)
        self.SetColumnWidth(1, 75)
        if len(self.columns) >= 3:
            self.SetColumnWidth(2, 100)

    def GetData(self):
        """Get list data"""
        return self.itemDataMap

    def Populate(self, data):
        """Populate the list"""
        self.itemDataMap = dict()
        self.itemIdMap = list()

        if self.shape:
            items = self.frame.GetModel().GetItems(objType=ModelAction)
            if isinstance(self.shape, ModelCondition):
                if self.GetLabel() == 'ElseBlockList':
                    shapeItems = map(
                        lambda x: x.GetId(),
                        self.shape.GetItems(items)['else'])
                else:
                    shapeItems = map(
                        lambda x: x.GetId(),
                        self.shape.GetItems(items)['if'])
            else:
                shapeItems = map(
                    lambda x: x.GetId(),
                    self.shape.GetItems(items))
        else:
            shapeItems = list()

        i = 0
        if len(self.columns) == 2:  # ItemCheckList
            checked = list()
        for action in data:
            if isinstance(action, ModelData) or \
                    action == self.shape:
                continue

            self.itemIdMap.append(action.GetId())

            if len(self.columns) == 2:
                self.itemDataMap[i] = [action.GetLabel(),
                                       action.GetLog()]
                aId = action.GetBlockId()
                if action.GetId() in shapeItems:
                    checked.append(aId)
                else:
                    checked.append(None)
            else:
                bId = action.GetBlockId()
                if not bId:
                    bId = _('No')
                else:
                    bId = _("Yes")
                options = action.GetParameterizedParams()
                params = []
                for f in options['flags']:
                    params.append('-{0}'.format(f['name']))
                for p in options['params']:
                    params.append(p['name'])

                self.itemDataMap[i] = [action.GetLabel(),
                                       bId,
                                       ','.join(params),
                                       action.GetLog()]

            i += 1

        self.itemCount = len(self.itemDataMap.keys())
        self.DeleteAllItems()
        i = 0
        if len(self.columns) == 2:
            for name, desc in six.itervalues(self.itemDataMap):
                index = self.InsertStringItem(i, str(i))
                self.SetStringItem(index, 0, name)
                self.SetStringItem(index, 1, desc)
                self.SetItemData(index, i)
                if checked[i]:
                    self.CheckItem(index, True)
                i += 1
        else:
            for name, inloop, param, desc in six.itervalues(self.itemDataMap):
                index = self.InsertStringItem(i, str(i))
                self.SetStringItem(index, 0, name)
                self.SetStringItem(index, 1, inloop)
                self.SetStringItem(index, 2, param)
                self.SetStringItem(index, 3, desc)
                self.SetItemData(index, i)
                i += 1

    def OnRemove(self, event):
        """Remove selected action(s) from the model"""
        model = self.frame.GetModel()
        canvas = self.frame.GetCanvas()

        item = self.GetFirstSelected()
        while item != -1:
            self.DeleteItem(item)
            del self.itemDataMap[item]

            action = model.GetItem(item + 1)  # action indices starts at 1
            if not action:
                item = self.GetFirstSelected()
                continue

            canvas.RemoveShapes([action])
            self.frame.ModelChanged()

            item = self.GetFirstSelected()

        canvas.Refresh()

        event.Skip()

    def OnEndEdit(self, event):
        """Finish editing of item"""
        itemIndex = event.GetIndex()
        columnIndex = event.GetColumn()
        self.itemDataMap[itemIndex][columnIndex] = event.GetText()
        action = self.frame.GetModel().GetItem(itemIndex + 1)
        if not action:
            event.Veto()
            return

        action.SetLabel(label=event.GetText())
        self.frame.ModelChanged()

    def OnReload(self, event=None):
        """Reload list of actions"""
        self.Populate(self.frame.GetModel().GetItems(objType=ModelAction))

    def OnRightUp(self, event):
        """Mouse right button up"""
        if self.disablePopup:
            return

        if not hasattr(self, "popupId"):
            self.popupID = dict()
            self.popupID['remove'] = wx.NewId()
            self.popupID['reload'] = wx.NewId()
            self.Bind(wx.EVT_MENU, self.OnRemove, id=self.popupID['remove'])
            self.Bind(wx.EVT_MENU, self.OnReload, id=self.popupID['reload'])

        # generate popup-menu
        menu = Menu()
        menu.Append(self.popupID['remove'], _("Delete selected"))
        if self.GetFirstSelected() == -1:
            menu.Enable(self.popupID['remove'], False)
        menu.AppendSeparator()
        menu.Append(self.popupID['reload'], _("Reload"))

        self.PopupMenu(menu)
        menu.Destroy()

    def MoveItems(self, items, up):
        """Move items in the list

        :param items: list of items to move
        :param up: True to move up otherwise down
        """
        if len(items) < 1:
            return

        if items[0] == 0 and up:
            del items[0]
        if len(items) < 1:
            return

        if items[-1] == len(self.itemDataMap.keys()) - 1 and not up:
            del items[-1]
        if len(items) < 1:
            return

        model = self.frame.GetModel()
        modelActions = model.GetItems(objType=ModelAction)
        idxList = dict()
        itemsToSelect = list()
        for i in items:
            if up:
                idx = i - 1
            else:
                idx = i + 1
            itemsToSelect.append(idx)
            idxList[
                model.GetItemIndex(
                    modelActions[i])] = model.GetItemIndex(
                modelActions[idx])

        # reorganize model items
        model.ReorderItems(idxList)
        model.Normalize()
        self.Populate(model.GetItems(objType=ModelAction))

        # re-selected originaly selected item
        for item in itemsToSelect:
            self.SetItemState(
                item,
                wx.LIST_STATE_SELECTED,
                wx.LIST_STATE_SELECTED | wx.LIST_STATE_FOCUSED)


class ItemCheckListCtrl(ItemListCtrl, listmix.CheckListCtrlMixin):

    def __init__(self, parent, shape, columns, frame, **kwargs):
        self.parent = parent
        self.frame = frame

        ItemListCtrl.__init__(self, parent, columns, frame,
                              disablePopup=True, **kwargs)
        listmix.CheckListCtrlMixin.__init__(self)
        self.SetColumnWidth(0, 100)

        self.shape = shape

    def OnBeginEdit(self, event):
        """Disable editing"""
        event.Veto()

    def OnCheckItem(self, index, flag):
        """Item checked/unchecked"""
        name = self.GetLabel()
        if name == 'IfBlockList' and self.window:
            self.window.OnCheckItemIf(index, flag)
        elif name == 'ElseBlockList' and self.window:
            self.window.OnCheckItemElse(index, flag)

    def GetItems(self):
        """Get list of selected actions"""
        ids = {'checked': list(),
               'unchecked': list()}

        # action ids start at 1
        for i in range(self.GetItemCount()):
            if self.IsChecked(i):
                ids['checked'].append(self.itemIdMap[i])
            else:
                ids['unchecked'].append(self.itemIdMap[i])

        return ids

    def CheckItemById(self, aId, flag):
        """Check/uncheck given item by id"""
        for i in range(self.GetItemCount()):
            iId = int(self.GetItem(i, 0).GetText())
            if iId == aId:
                self.CheckItem(i, flag)
                break
