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#!/usr/bin/env python

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# -*- coding: utf-8 -*-

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# This file is part of Beremiz, a Integrated Development Environment for

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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.

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#

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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

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#

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# See COPYING file for copyrights details.

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#

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# This program is free software; you can redistribute it and/or

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# modify it under the terms of the GNU General Public License

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# as published by the Free Software Foundation; either version 2

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# of the License, or (at your option) any later version.

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#

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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# GNU General Public License for more details.

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#

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# You should have received a copy of the GNU General Public License

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# along with this program; if not, write to the Free Software

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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

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from __future__ import absolute_import

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import os

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import shutil

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import wx

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import wx.lib.buttons

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from editors.EditorPanel import EditorPanel

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from util.BitmapLibrary import GetBitmap

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from controls import FolderTree

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class FileManagementPanel(EditorPanel):

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    def _init_Editor(self, parent):

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        self.Editor = wx.Panel(parent)

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        main_sizer = wx.BoxSizer(wx.HORIZONTAL)

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        left_sizer = wx.BoxSizer(wx.VERTICAL)

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        main_sizer.AddSizer(left_sizer, 1, border=5, flag=wx.GROW | wx.ALL)

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        managed_dir_label = wx.StaticText(self.Editor, label=_(self.TagName) + ":")

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        left_sizer.AddWindow(managed_dir_label, border=5, flag=wx.GROW | wx.BOTTOM)

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        self.ManagedDir = FolderTree(self.Editor, self.Folder, FILTER)

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        left_sizer.AddWindow(self.ManagedDir, 1, flag=wx.GROW)

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        managed_treectrl = self.ManagedDir.GetTreeCtrl()

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        self.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnTreeItemChanged, managed_treectrl)

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        if self.EnableDragNDrop:

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            self.Bind(wx.EVT_TREE_BEGIN_DRAG, self.OnTreeBeginDrag, managed_treectrl)

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        button_sizer = wx.BoxSizer(wx.VERTICAL)

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        main_sizer.AddSizer(button_sizer, border=5,

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                            flag=wx.ALL | wx.ALIGN_CENTER_VERTICAL)

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        for idx, (name, bitmap, help) in enumerate([

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                ("DeleteButton", "remove_element", _("Remove file from left folder")),

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                ("LeftCopyButton", "LeftCopy", _("Copy file from right folder to left")),

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                ("RightCopyButton", "RightCopy", _("Copy file from left folder to right")),

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                ("EditButton", "edit", _("Edit file"))]):

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            button = wx.lib.buttons.GenBitmapButton(

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                self.Editor,

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                bitmap=GetBitmap(bitmap),

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                size=wx.Size(28, 28), style=wx.NO_BORDER)

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            button.SetToolTipString(help)

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            setattr(self, name, button)

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            if idx > 0:

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                flag = wx.TOP

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            else:

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                flag = 0

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            self.Bind(wx.EVT_BUTTON, getattr(self, "On" + name), button)

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            button_sizer.AddWindow(button, border=20, flag=flag)

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        right_sizer = wx.BoxSizer(wx.VERTICAL)

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        main_sizer.AddSizer(right_sizer, 1, border=5, flag=wx.GROW | wx.ALL)

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        if wx.Platform == '__WXMSW__':

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            system_dir_label = wx.StaticText(self.Editor, label=_("My Computer:"))

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        else:

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            system_dir_label = wx.StaticText(self.Editor, label=_("Home Directory:"))

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        right_sizer.AddWindow(system_dir_label, border=5, flag=wx.GROW | wx.BOTTOM)

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        self.SystemDir = FolderTree(self.Editor, self.HomeDirectory, FILTER, False)

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        right_sizer.AddWindow(self.SystemDir, 1, flag=wx.GROW)

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        system_treectrl = self.SystemDir.GetTreeCtrl()

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        self.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnTreeItemChanged, system_treectrl)

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        self.Editor.SetSizer(main_sizer)

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    def __init__(self, parent, controler, name, folder, enable_dragndrop=False):

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        self.Folder = os.path.realpath(folder)

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        self.EnableDragNDrop = enable_dragndrop

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        if wx.Platform == '__WXMSW__':

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            self.HomeDirectory = "/"

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        else:

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            self.HomeDirectory = os.path.expanduser("~")

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        EditorPanel.__init__(self, parent, name, None, None)

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        self.Controler = controler

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        self.EditableFileExtensions = []

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        self.EditButton.Hide()

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        self.SetIcon(GetBitmap("FOLDER"))

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    def __del__(self):

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        self.Controler.OnCloseEditor(self)

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    def GetTitle(self):

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        return _(self.TagName)

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    def SetEditableFileExtensions(self, extensions):

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        self.EditableFileExtensions = extensions

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        if len(self.EditableFileExtensions) > 0:

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            self.EditButton.Show()

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    def RefreshView(self):

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        self.ManagedDir.RefreshTree()

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        self.SystemDir.RefreshTree()

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        self.RefreshButtonsState()

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    def RefreshButtonsState(self):

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        managed_filepath = self.ManagedDir.GetPath()

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        system_filepath = self.SystemDir.GetPath()

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        self.DeleteButton.Enable(os.path.isfile(managed_filepath))

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        self.LeftCopyButton.Enable(os.path.isfile(system_filepath))

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        self.RightCopyButton.Enable(os.path.isfile(managed_filepath))

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        if len(self.EditableFileExtensions) > 0:

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            self.EditButton.Enable(

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                os.path.isfile(managed_filepath) and

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                os.path.splitext(managed_filepath)[1] in self.EditableFileExtensions)

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    def OnTreeItemChanged(self, event):

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        self.RefreshButtonsState()

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        event.Skip()

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    def OnDeleteButton(self, event):

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        filepath = self.ManagedDir.GetPath()

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        if os.path.isfile(filepath):

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            _folder, filename = os.path.split(filepath)

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            dialog = wx.MessageDialog(self,

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                                      _("Do you really want to delete the file '%s'?") % filename,

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                                      _("Delete File"),

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                                      wx.YES_NO | wx.ICON_QUESTION)

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            remove = dialog.ShowModal() == wx.ID_YES

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            dialog.Destroy()

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            if remove:

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                os.remove(filepath)

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                self.ManagedDir.RefreshTree()

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        event.Skip()

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    def OnEditButton(self, event):

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        filepath = self.ManagedDir.GetPath()

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        if os.path.isfile(filepath) and \

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           os.path.splitext(filepath)[1] in self.EditableFileExtensions:

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            self.Controler._OpenView(filepath + "::")

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        event.Skip()

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    def CopyFile(self, src, dst):

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        if os.path.isfile(src):

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            _src_folder, src_filename = os.path.split(src)

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            if os.path.isfile(dst):

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                dst_folder, _dst_filename = os.path.split(dst)

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            else:

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                dst_folder = dst

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            dst_filepath = os.path.join(dst_folder, src_filename)

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            if os.path.isfile(dst_filepath):

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                dialog = wx.MessageDialog(

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                    self,

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                    _("The file '%s' already exist.\nDo you want to replace it?") % src_filename,

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                    _("Replace File"), wx.YES_NO | wx.ICON_QUESTION)

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                copy = dialog.ShowModal() == wx.ID_YES

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                dialog.Destroy()

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            else:

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                copy = True

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            if copy:

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                shutil.copyfile(src, dst_filepath)

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                return dst_filepath

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        return None

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    def OnLeftCopyButton(self, event):

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        filepath = self.CopyFile(self.SystemDir.GetPath(), self.ManagedDir.GetPath())

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        if filepath is not None:

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            self.ManagedDir.RefreshTree()

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            self.ManagedDir.SetPath(filepath)

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        event.Skip()

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    def OnRightCopyButton(self, event):

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        filepath = self.CopyFile(self.ManagedDir.GetPath(), self.SystemDir.GetPath())

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        if filepath is not None:

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            self.SystemDir.RefreshTree()

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            self.SystemDir.SetPath(filepath)

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        event.Skip()

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    def OnTreeBeginDrag(self, event):

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        filepath = self.ManagedDir.GetPath()

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        if os.path.isfile(filepath):

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            relative_filepath = filepath.replace(os.path.join(self.Folder, ""), "")

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            data = wx.TextDataObject(str(("'%s'" % relative_filepath, "Constant")))

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            dragSource = wx.DropSource(self)

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            dragSource.SetData(data)

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            dragSource.DoDragDrop()