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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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class button:

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    def __init__(self, parent, id, args):

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        self.parent = parent

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        self.id = id

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        self.back_elt = getSVGElementById(args.back_id)

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        self.sele_elt = getSVGElementById(args.sele_id)

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        self.toggle = args.toggle

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        self.active = args.active

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        if args.state != undefined:

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            self.state = args.state

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        else:

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            self.state = False

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        self.dragging = False

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        if self.toggle:

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            self.up = not self.state

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        else:

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            self.up = True

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        # Add event on each element of the button

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        if self.active:

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            self.back_elt.addEventListener("mouseup", self, False)

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            self.back_elt.addEventListener("mousedown", self, False)

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            self.back_elt.addEventListener("mouseover", self, False)

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            self.back_elt.addEventListener("mouseout", self, False)

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            self.sele_elt.addEventListener("mouseup", self, False)

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            self.sele_elt.addEventListener("mousedown", self, False)

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            self.sele_elt.addEventListener("mouseover", self, False)

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            self.sele_elt.addEventListener("mouseout", self, False)

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        blockSVGElementDrag(self.back_elt)

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        blockSVGElementDrag(self.sele_elt)

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        self.updateElements()

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    # method to display the current state of interface

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    def updateElements(self):

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        if self.up:

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            self.sele_elt.setAttribute("display", "none")

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            self.back_elt.removeAttribute("display")

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        else:

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            self.sele_elt.removeAttribute("display")

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            self.back_elt.setAttribute("display", "none")

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    def updateValues(self, values):

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        if values.state != self.state:

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            self.state = values.state

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            self.up = not self.state

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            if self.toggle:

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                updateAttr(self.id, 'state', self.state)

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            self.updateElements()

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    def handleEvent(self, evt):

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        # Quand le bouton de la souris est presse

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        if evt.type == "mousedown":

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            evt.stopPropagation()

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            setCurrentObject(self)

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            self.dragging = True

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            if self.toggle:

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                self.up = self.state

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            else:

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                self.up = False

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                self.state = True

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                updateAttr(self.id, 'state', self.state)

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            self.updateElements()

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        if isCurrentObject(self) and self.dragging:

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            # Quand le bouton est survole

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            if evt.type == "mouseover" and self.toggle:

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                self.up = self.state

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                self.updateElements()

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            # Quand le curseur quitte la zone du bouton

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            elif evt.type == "mouseout" and self.toggle:       

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                self.up = not self.state

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                self.updateElements()

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            # Quand le bouton de la souris est relache

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            elif evt.type == "mouseup":

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                evt.stopPropagation()

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                if self.toggle and self.up == self.state:

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                    self.state = not self.state

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                    updateAttr(self.id, 'state', self.state)

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                elif not self.toggle:

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                    self.up = True

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                    self.state = False

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                    updateAttr(self.id, 'state', self.state)

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                    self.updateElements()

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                self.dragging = False

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class textControl:

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    def __init__(self, parent, id, args):

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        self.parent = parent

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        self.id = id

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        self.back_elt = getSVGElementById(args.back_id)

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        if args.text != undefined:

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            self.text = args.text

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        else:

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            self.text = ""

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        self.updateElements()

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    def updateValues(self, values):

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        if values.text != self.value:

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            self.text = values.text

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            updateAttr(self.id, 'text', self.text)

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            self.updateElements()

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    def updateElements(self):

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        self.back_elt.firstChild.firstChild.textContent = self.text

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    def handleEvent(self, evt):

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        pass

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