# ***************************************************************************
# *   (c) 2009, 2010 Yorik van Havre <yorik@uncreated.net>                  *
# *   (c) 2009, 2010 Ken Cline <cline@frii.com>                             *
# *   (c) 2020 Eliud Cabrera Castillo <e.cabrera-castillo@tum.de>           *
# *                                                                         *
# *   This file is part of the FreeCAD CAx development system.              *
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# *   for detail see the LICENCE text file.                                 *
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# *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
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# *   GNU Library General Public License for more details.                  *
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# *   USA                                                                   *
# *                                                                         *
# ***************************************************************************
"""Provides GUI tools to set different modes of other tools.

For example, a construction mode, a continue mode to repeat commands,
and to toggle the appearance of certain shapes to wireframe.
"""
## @package gui_togglemodes
# \ingroup draftguitools
# \brief Provides GUI tools to set different modes of other tools.

## \addtogroup draftguitools
# @{
from PySide.QtCore import QT_TRANSLATE_NOOP

import FreeCADGui as Gui
import Draft_rc
import draftguitools.gui_base as gui_base

from draftutils.messages import _msg
from draftutils.translate import translate

# The module is used to prevent complaints from code checkers (flake8)
True if Draft_rc.__name__ else False


class BaseMode(gui_base.GuiCommandSimplest):
    """Base class for mode context GuiCommands.

    This is inherited by the other GuiCommand classes to run
    a set of similar actions when changing modes.

    It inherits `GuiCommandSimplest` to set up the document
    and other behavior. See this class for more information.
    """

    def Activated(self, mode="None"):
        """Execute when the command is called.

        Parameters
        ----------
        action: str
            Indicates the type of mode to switch to.
            It can be `'construction'` or `'continue'`.
        """
        super(BaseMode, self).Activated()

        if hasattr(Gui, "draftToolBar"):
            _ui = Gui.draftToolBar
        else:
            _msg(translate("draft","No active Draft toolbar"))
            return

        if _ui is not None:
            if mode == "construction" and hasattr(_ui, "constrButton"):
                _ui.constrButton.toggle()
            elif mode == "continue":
                _ui.toggleContinue()


class ToggleConstructionMode(BaseMode):
    """GuiCommand for the Draft_ToggleConstructionMode tool.

    When construction mode is active, the following objects created
    will be included in the construction group, and will be drawn
    with the specified color and properties.
    """

    def __init__(self):
        super(ToggleConstructionMode,
              self).__init__(name=translate("draft","Construction Mode"))

    def GetResources(self):
        """Set icon, menu and tooltip."""

        d = {'Pixmap': 'Draft_Construction',
             'MenuText': QT_TRANSLATE_NOOP("Draft_ToggleConstructionMode","Toggle Construction Mode"),
             'Accel': "C, M",
             'ToolTip': QT_TRANSLATE_NOOP("Draft_ToggleConstructionMode","Toggles the construction mode")}
        return d

    def Activated(self):
        """Execute when the command is called.

        It calls the `toggle()` method of the construction button
        in the `DraftToolbar` class.
        """
        super(ToggleConstructionMode, self).Activated(mode="construction")


Gui.addCommand('Draft_ToggleConstructionMode', ToggleConstructionMode())


class ToggleDisplayMode(gui_base.GuiCommandNeedsSelection):
    """GuiCommand for the Draft_ToggleDisplayMode tool.

    Switches the display mode of selected objects from flatlines
    to wireframe and back.

    It inherits `GuiCommandNeedsSelection` to only be available
    when there is a document and a selection.
    See this class for more information.
    """

    def __init__(self):
        super(ToggleDisplayMode,
              self).__init__(name=translate("draft","Toggle Display Mode"))

    def GetResources(self):
        """Set icon, menu and tooltip."""

        d = {'Pixmap': 'Draft_SwitchMode',
             'Accel': "Shift+Space",
             'MenuText': QT_TRANSLATE_NOOP("Draft_ToggleDisplayMode","Toggle Wireframe"),
             'ToolTip': QT_TRANSLATE_NOOP("Draft_ToggleDisplayMode","Switches the view style of the selected objects from Flat Lines to Wireframe and back")}
        return d

    def Activated(self):
        """Execute when the command is called.

        It tests the view provider of the selected objects
        and changes their `DisplayMode` from `'Wireframe'`
        to `'Flat Lines'`, and the other way around, if possible.
        """
        super(ToggleDisplayMode, self).Activated()

        for obj in Gui.Selection.getSelection():
            if obj.ViewObject.DisplayMode == "Flat Lines":
                if "Wireframe" in obj.ViewObject.listDisplayModes():
                    obj.ViewObject.DisplayMode = "Wireframe"
            elif obj.ViewObject.DisplayMode == "Wireframe":
                if "Flat Lines" in obj.ViewObject.listDisplayModes():
                    obj.ViewObject.DisplayMode = "Flat Lines"


Gui.addCommand('Draft_ToggleDisplayMode', ToggleDisplayMode())

## @}