#===============================================================================
# Copyright (C) 2010 Diego Duclos
#
# This file is part of pyfa.
#
# pyfa is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# pyfa is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with pyfa.  If not, see <http://www.gnu.org/licenses/>.
#===============================================================================

import wx
import gui.mainFrame
from gui.viewColumn import ViewColumn
import sys

class Display(wx.ListCtrl):
    def __init__(self, parent, style = 0):

        wx.ListCtrl.__init__(self, parent, style=wx.LC_REPORT | wx.BORDER_NONE | style)

        self.imageList = wx.ImageList(16, 16)
        self.SetImageList(self.imageList, wx.IMAGE_LIST_SMALL)
        self.activeColumns = []
        self.Bind(wx.EVT_LIST_COL_BEGIN_DRAG, self.resizeChecker)

        self.mainFrame = gui.mainFrame.MainFrame.getInstance()

        i = 0
        for colName in self.DEFAULT_COLS:
            if colName[0:5] == "attr:":
                attrName = colName[5:]
                params = {"showIcon": True,
                          "displayName": False,
                          "attribute": attrName}
                col = ViewColumn.getColumn("Attribute Display")(self, params)
            else:
                col = ViewColumn.getColumn(colName)(self, None)

            self.addColumn(i, col)
            i += 1

        self.imageListBase = self.imageList.ImageCount

    def OnEraseBackGround(self, event):
        #Prevent flicker by not letting the parent's method get called.
        pass

    def addColumn(self, i, col):
        self.activeColumns.append(col)
        info = wx.ListItem()
        info.m_mask = col.mask
        info.m_image = col.imageId
        info.m_text = col.columnText
        self.InsertColumnInfo(i, info)
        col.resized = False
        self.SetColumnWidth(i, wx.LIST_AUTOSIZE_USEHEADER if col.size is wx.LIST_AUTOSIZE else col.size)

    def getColIndex(self, colClass):
        for i, col in enumerate(self.activeColumns):
            if col.__class__ == colClass:
                return i

        return None

    def resizeChecker(self, event):
        # we veto header cell resize by default till we find a way
        # to assure a minimal size for the resized header cell

        event.Veto()

#        if self.activeColumns[event.Column].resizable is False:
#            event.Veto()
#        else:
#            self.activeColumns[event.Column].resized = True

    def clearItemImages(self):
        for i in xrange(self.imageList.ImageCount - 1, self.imageListBase, -1):
            self.imageList.Remove(i)

    def populate(self, stuff):
        selection = []

        self.Freeze()

        sel = self.GetFirstSelected()
        while sel != -1:
            selection.append(sel)
            sel = self.GetNextSelected(sel)

        self.DeleteAllItems()
        self.clearItemImages()

        if stuff is not None:
            for id, st in enumerate(stuff):
                index = self.InsertStringItem(sys.maxint, "")

        for sel in selection:
            self.Select(sel)

        self.Thaw()

    def refresh(self, stuff):
        if stuff == None:
            return

        selection = []
        sel = self.GetFirstSelected()
        while sel != -1:
            selection.append(sel)
            sel = self.GetNextSelected(sel)

        self.Freeze()
        item = -1
        for id, st in enumerate(stuff):
            item = self.GetNextItem(item)
            for i, col in enumerate(self.activeColumns):
                colItem = self.GetItem(item, i)
                oldText = colItem.GetText()
                oldImageId = colItem.GetImage()
                newText = col.getText(st)
                newImageId = col.getImageId(st)

                colItem.SetText(newText)
                colItem.SetImage(newImageId)

                if oldText != newText or oldImageId != newImageId:
                    self.SetItem(colItem)

                self.SetItemState(item, 0 , wx.LIST_STATE_FOCUSED | wx.LIST_STATE_SELECTED)

                self.SetItemData(item, id)

        for i, col in enumerate(self.activeColumns):
            if not col.resized:
                self.SetColumnWidth(i, col.size)
                if self.GetColumnWidth(i) < 40 and col.size == wx.LIST_AUTOSIZE:
                    self.SetColumnWidth(i, 40)

        for sel in selection:
            self.Select(sel)
        self.Thaw()

    def update(self, stuff):
        self.populate(stuff)
        self.refresh(stuff)

    def getColumn(self, point):
        x = point[0]
        total = 0
        for col in xrange(self.GetColumnCount()):
            total += self.GetColumnWidth(col)
            if total >= x:
                return col