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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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from functools import reduce

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import wx

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import wx.lib.buttons

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import wx.lib.agw.customtreectrl as CT

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from PLCControler import *

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from util.BitmapLibrary import GetBitmap

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from plcopen.types_enums import GetElementType

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def GenerateName(infos):

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    if infos[0] in ["input", "output", "value"]:

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        return "%s %d:" % (infos[0], infos[1])

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    elif infos[0] == "range":

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        return "%s %d %s" % (infos[0], infos[1], infos[2])

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    elif infos[0] == "struct":

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        return "element %d %s" % (infos[1], infos[2])

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    return "%s:" % infos[0]

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# -------------------------------------------------------------------------------

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#                            Search Result Panel

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# -------------------------------------------------------------------------------

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class SearchResultPanel(wx.Panel):

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    def _init_coll_MainSizer_Items(self, parent):

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        parent.AddSizer(self.HeaderSizer, 0, border=0, flag=wx.GROW)

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        parent.AddWindow(self.SearchResultsTree, 1, border=0, flag=wx.GROW)

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    def _init_coll_MainSizer_Growables(self, parent):

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        parent.AddGrowableCol(0)

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        parent.AddGrowableRow(1)

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    def _init_coll_HeaderSizer_Items(self, parent):

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        parent.AddWindow(self.HeaderLabel, 1, border=5, flag=wx.LEFT | wx.RIGHT | wx.ALIGN_CENTER_VERTICAL)

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        parent.AddWindow(self.ResetButton, 0, border=0, flag=0)

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    def _init_coll_HeaderSizer_Growables(self, parent):

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        parent.AddGrowableCol(0)

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    def _init_sizers(self):

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        self.MainSizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=0)

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        self.HeaderSizer = wx.BoxSizer(wx.HORIZONTAL)

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        self._init_coll_MainSizer_Items(self.MainSizer)

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        self._init_coll_MainSizer_Growables(self.MainSizer)

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        self._init_coll_HeaderSizer_Items(self.HeaderSizer)

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        self.SetSizer(self.MainSizer)

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    def _init_ctrls(self, prnt):

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        self.HeaderLabel = wx.StaticText(name='HeaderLabel', parent=self,

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                                         pos=wx.Point(0, 0), size=wx.Size(0, 17), style=0)

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        search_results_tree_style = CT.TR_HAS_BUTTONS | CT.TR_NO_LINES | CT.TR_HAS_VARIABLE_ROW_HEIGHT

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        self.SearchResultsTree = CT.CustomTreeCtrl(name="SearchResultsTree", parent=self,

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                                                   pos=wx.Point(0, 0), style=search_results_tree_style)

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        self.SearchResultsTree.SetAGWWindowStyleFlag(search_results_tree_style)

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        self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnSearchResultsTreeItemActivated,

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                  self.SearchResultsTree)

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        self.ResetButton = wx.lib.buttons.GenBitmapButton(

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            self, bitmap=GetBitmap("reset"),

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

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        self.ResetButton.SetToolTipString(_("Reset search result"))

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        self.Bind(wx.EVT_BUTTON, self.OnResetButton, self.ResetButton)

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        self._init_sizers()

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    def __init__(self, parent, window):

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        wx.Panel.__init__(self,

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                          name='SearchResultPanel', parent=parent,

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                          pos=wx.Point(0, 0),

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                          size=wx.Size(0, 0), style=wx.TAB_TRAVERSAL)

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        self.ParentWindow = window

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        self._init_ctrls(parent)

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        # Define Tree item icon list

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        self.TreeImageList = wx.ImageList(16, 16)

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        self.TreeImageDict = {}

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        # Icons for other items

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        for imgname, itemtype in [

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                # editables

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                ("PROJECT",        ITEM_PROJECT),

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                ("TRANSITION",     ITEM_TRANSITION),

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                ("ACTION",         ITEM_ACTION),

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                ("CONFIGURATION",  ITEM_CONFIGURATION),

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                ("RESOURCE",       ITEM_RESOURCE),

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                ("DATATYPE",       ITEM_DATATYPE),

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                ("ACTION",         "action_block"),

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                ("IL",             "IL"),

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                ("ST",             "ST"),

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                ("FILE",           ITEM_CONFNODE)]:

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            self.TreeImageDict[itemtype] = self.TreeImageList.Add(GetBitmap(imgname))

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        for itemtype in ["function", "functionBlock", "program",

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                         "comment", "block", "io_variable",

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                         "connector", "contact", "coil",

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                         "step", "transition", "jump",

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                         "var_local", "var_input",

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                         "var_inout", "var_output"]:

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            self.TreeImageDict[itemtype] = self.TreeImageList.Add(GetBitmap(itemtype.upper()))

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        # Assign icon list to TreeCtrl

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        self.SearchResultsTree.SetImageList(self.TreeImageList)

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        self.ResetSearchResults()

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    def SetSearchResults(self, criteria, search_results):

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        self.Criteria = criteria

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        self.SearchResults = {}

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        self.ElementsOrder = []

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        for infos, start, end, text in search_results:

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            if infos[0] not in self.ElementsOrder:

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                self.ElementsOrder.append(infos[0])

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            results = self.SearchResults.setdefault(infos[0], [])

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            results.append((infos, start, end, text))

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        self.RefreshView()

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    def ResetSearchResults(self):

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        self.Criteria = None

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        self.ElementsOrder = []

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        self.SearchResults = {}

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        self.RefreshView()

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    def RefreshView(self):

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        self.SearchResultsTree.DeleteAllItems()

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        if self.Criteria is None:

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            self.SearchResultsTree.AddRoot("")

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            root = self.SearchResultsTree.GetRootItem()

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            root.SetHilight(False)

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            self.HeaderLabel.SetLabel(_("No search results available."))

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            self.ResetButton.Enable(False)

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        else:

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            matches_number = 0

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            search_results_tree_infos = {

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                "name": _("Project '%s':") % self.ParentWindow.Controler.GetProjectName(),

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                "type": ITEM_PROJECT,

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                "data": None,

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                "text": None,

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                "matches": None,

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            }

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            search_results_tree_children = search_results_tree_infos.setdefault("children", [])

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            for tagname in self.ElementsOrder:

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                results = self.SearchResults.get(tagname, [])

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                matches_number += len(results)

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                words = tagname.split("::")

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                element_type = GetElementType(tagname)

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                if element_type == ITEM_POU:

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                    element_type = self.ParentWindow.Controler.GetPouType(words[1])

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                element_infos = {"name": words[-1],

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                                 "type": element_type,

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                                 "data": tagname,

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                                 "text": None,

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                                 "matches": len(results)}

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                children = element_infos.setdefault("children", [])

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                for infos, start, end, text in results:

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                    if len(words) == 1:  # CTN match

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                        child_name = {"body": str(start[0])+":",

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                                      "var_inout": _("Variable:")}[infos[1]]

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                        child_type = {"body": ITEM_CONFNODE,

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                                      "var_inout": "var_inout"}[infos[1]]

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                    elif infos[1] == "name" or element_type == ITEM_DATATYPE:

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                        child_name = GenerateName(infos[1:])

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                        child_type = element_type

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                    else:

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                        if element_type == ITEM_RESOURCE:

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                            child_type = element_type

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                        else:

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                            child_type = infos[1]

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                        if child_type == "name":

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                            child_name = "name"

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                        elif child_type == "body":

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                            child_name = "body"

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                            if element_type == ITEM_TRANSITION:

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                                child_type = self.ParentWindow.Controler.GetTransitionBodyType(words[1], words[2])

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                            elif element_type == ITEM_ACTION:

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                                child_type = self.ParentWindow.Controler.GetActionBodyType(words[1], words[2])

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                            else:

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                                child_type = self.ParentWindow.Controler.GetPouBodyType(words[1])

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                        else:

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                            child_name = GenerateName(infos[3:])

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                    child_infos = {

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                        "name": child_name,

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                        "type": child_type,

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                        "data": (infos, start, end, None),

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                        "text": text,

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                        "matches": 1,

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                        "children": [],

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                    }

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                    children.append(child_infos)

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                # not Project node

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                if len(words) > 2:

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                    for _element_infos in search_results_tree_children:

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                        if _element_infos["name"] == words[1]:

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                            _element_infos["matches"] += len(children)

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                            _element_infos["children"].append(element_infos)

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                            break

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                    if element_type == ITEM_RESOURCE:

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                        search_results_tree_children.append(element_infos)

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                else:  # Project node or CTN

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                    search_results_tree_children.append(element_infos)

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            if matches_number < 2:

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                header_format = _("'{a1}' - {a2} match in project")

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            else:

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                header_format = _("'{a1}' - {a2} matches in project")

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            self.HeaderLabel.SetLabel(header_format.format(a1=self.Criteria["find_pattern"], a2=matches_number))

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            self.ResetButton.Enable(True)

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            if matches_number > 0:

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                root = self.SearchResultsTree.GetRootItem()

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                if root is None:

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                    root = self.SearchResultsTree.AddRoot(search_results_tree_infos["name"])

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                self.GenerateSearchResultsTreeBranch(root, search_results_tree_infos)

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                self.SearchResultsTree.Expand(root)

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    def GetTextCtrlClickFunction(self, item):

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        def OnTextCtrlClick(event):

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            self.SearchResultsTree.SelectItem(item)

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            event.Skip()

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        return OnTextCtrlClick

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    def GetTextCtrlDClickFunction(self, item):

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        def OnTextCtrlDClick(event):

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            self.ShowSearchResults(item)

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            event.Skip()

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        return OnTextCtrlDClick

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    def GenerateSearchResultsTreeBranch(self, root, infos):

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        if infos["name"] == "body":

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            item_name = "%d:" % infos["data"][1][0]

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        else:

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            item_name = infos["name"]

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        self.SearchResultsTree.SetItemText(root, item_name)

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        self.SearchResultsTree.SetPyData(root, infos["data"])

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        self.SearchResultsTree.SetItemBackgroundColour(root, wx.WHITE)

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        self.SearchResultsTree.SetItemTextColour(root, wx.BLACK)

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        if infos["type"] is not None:

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            if infos["type"] == ITEM_POU:

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                self.SearchResultsTree.SetItemImage(root, self.TreeImageDict[self.ParentWindow.Controler.GetPouType(infos["name"])])

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            else:

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                self.SearchResultsTree.SetItemImage(root, self.TreeImageDict[infos["type"]])

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        text = None

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        if infos["text"] is not None:

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            text = infos["text"]

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            start, end = infos["data"][1:3]

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            text_lines = infos["text"].splitlines()

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            start_idx = start[1]

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            end_idx = reduce(lambda x, y: x + y, map(lambda x: len(x) + 1, text_lines[:end[0] - start[0]]), end[1] + 1)

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            style = wx.TextAttr(wx.BLACK, wx.Colour(206, 204, 247))

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        elif infos["type"] is not None and infos["matches"] > 1:

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            text = _("(%d matches)") % infos["matches"]

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            start_idx, end_idx = 0, len(text)

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            style = wx.TextAttr(wx.Colour(0, 127, 174))

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        if text is not None:

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            text_ctrl_style = wx.BORDER_NONE | wx.TE_READONLY | wx.TE_RICH2

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            if wx.Platform != '__WXMSW__' or len(text.splitlines()) > 1:

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                text_ctrl_style |= wx.TE_MULTILINE | wx.TE_NO_VSCROLL

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            text_ctrl = wx.TextCtrl(id=-1, parent=self.SearchResultsTree, pos=wx.Point(0, 0),

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                                    value=text, style=text_ctrl_style)

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            width, height = text_ctrl.GetTextExtent(text)

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            text_ctrl.SetClientSize(wx.Size(width + 1, height))

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            text_ctrl.SetBackgroundColour(self.SearchResultsTree.GetBackgroundColour())

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            text_ctrl.Bind(wx.EVT_LEFT_DOWN, self.GetTextCtrlClickFunction(root))

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            text_ctrl.Bind(wx.EVT_LEFT_DCLICK, self.GetTextCtrlDClickFunction(root))

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            text_ctrl.SetInsertionPoint(0)

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            text_ctrl.SetStyle(start_idx, end_idx, style)

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            self.SearchResultsTree.SetItemWindow(root, text_ctrl)

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        item, root_cookie = self.SearchResultsTree.GetFirstChild(root)

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        for child in infos["children"]:

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            if item is None:

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                item = self.SearchResultsTree.AppendItem(root, "")

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                item, root_cookie = self.SearchResultsTree.GetNextChild(root, root_cookie)

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            self.GenerateSearchResultsTreeBranch(item, child)

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            item, root_cookie = self.SearchResultsTree.GetNextChild(root, root_cookie)

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    def ShowSearchResults(self, item):

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        data = self.SearchResultsTree.GetPyData(item)

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        if isinstance(data, tuple):

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            search_results = [data]

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        else:

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            search_results = self.SearchResults.get(data, [])

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        self.ParentWindow.ClearHighlights(SEARCH_RESULT_HIGHLIGHT)

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        for infos, start, end, _text in search_results:

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            self.ParentWindow.ShowSearchResult(infos, start, end)

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    def OnSearchResultsTreeItemActivated(self, event):

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        self.ShowSearchResults(event.GetItem())

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        event.Skip()

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    def OnResetButton(self, event):

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        self.ResetSearchResults()

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        self.ParentWindow.ClearSearchResults()

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        event.Skip()