{-
 *  Programmer:	Piotr Borek
 *  E-mail:     piotrborek@op.pl
 *  Copyright 2018 Piotr Borek
 *
 *  Distributed under the terms of the GPL (GNU Public License)
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-}

module Simple.UI.Widgets.Properties.Selected (
    HasSelected,
    selected,
    selectedGetColors
) where

import qualified Graphics.Vty                  as Vty

import           Simple.UI.Core.Attribute
import           Simple.UI.Core.Draw
import           Simple.UI.Core.Internal.UIApp
import           Simple.UI.Widgets.Widget

class WidgetClass w => HasSelected w where
    selected :: w -> Attribute Bool

    selectedGetColors :: w -> UIApp u (Vty.Color, Vty.Color, DrawStyle)
    selectedGetColors w
widget = do
        Bool
sel <- w
-> (w -> Attribute Bool)
-> ReaderT (AppConfig u) (StateT AppState IO) Bool
forall (m :: * -> *) s a.
MonadIO m =>
s -> (s -> Attribute a) -> m a
get w
widget w -> Attribute Bool
forall w. HasSelected w => w -> Attribute Bool
selected
        if Bool
sel
            then do
                Color
fg <- w
-> (w -> Attribute Color)
-> ReaderT (AppConfig u) (StateT AppState IO) Color
forall (m :: * -> *) s a.
MonadIO m =>
s -> (s -> Attribute a) -> m a
get w
widget w -> Attribute Color
forall w. WidgetClass w => w -> Attribute Color
colorForegroundSelected
                Color
bg <- w
-> (w -> Attribute Color)
-> ReaderT (AppConfig u) (StateT AppState IO) Color
forall (m :: * -> *) s a.
MonadIO m =>
s -> (s -> Attribute a) -> m a
get w
widget w -> Attribute Color
forall w. WidgetClass w => w -> Attribute Color
colorBackgroundSelected
                DrawStyle
style <- w
-> (w -> Attribute DrawStyle)
-> ReaderT (AppConfig u) (StateT AppState IO) DrawStyle
forall (m :: * -> *) s a.
MonadIO m =>
s -> (s -> Attribute a) -> m a
get w
widget w -> Attribute DrawStyle
forall w. WidgetClass w => w -> Attribute DrawStyle
colorStyleSelected
                (Color, Color, DrawStyle) -> UIApp u (Color, Color, DrawStyle)
forall (m :: * -> *) a. Monad m => a -> m a
return (Color
fg, Color
bg, DrawStyle
style)
            else do
                Color
fg <- w
-> (w -> Attribute Color)
-> ReaderT (AppConfig u) (StateT AppState IO) Color
forall (m :: * -> *) s a.
MonadIO m =>
s -> (s -> Attribute a) -> m a
get w
widget w -> Attribute Color
forall w. WidgetClass w => w -> Attribute Color
colorForeground
                Color
bg <- w
-> (w -> Attribute Color)
-> ReaderT (AppConfig u) (StateT AppState IO) Color
forall (m :: * -> *) s a.
MonadIO m =>
s -> (s -> Attribute a) -> m a
get w
widget w -> Attribute Color
forall w. WidgetClass w => w -> Attribute Color
colorBackground
                DrawStyle
style <- w
-> (w -> Attribute DrawStyle)
-> ReaderT (AppConfig u) (StateT AppState IO) DrawStyle
forall (m :: * -> *) s a.
MonadIO m =>
s -> (s -> Attribute a) -> m a
get w
widget w -> Attribute DrawStyle
forall w. WidgetClass w => w -> Attribute DrawStyle
colorStyle
                (Color, Color, DrawStyle) -> UIApp u (Color, Color, DrawStyle)
forall (m :: * -> *) a. Monad m => a -> m a
return (Color
fg, Color
bg, DrawStyle
style)