"""
novelWriter – Custom Widget: Modified Widgets
=============================================

File History:
Created: 2024-02-01 [2.3b1] NComboBox
Created: 2024-02-01 [2.3b1] NSpinBox
Created: 2024-02-01 [2.3b1] NDoubleSpinBox

This file is a part of novelWriter
Copyright 2018–2024, Veronica Berglyd Olsen

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 3 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, see <https://www.gnu.org/licenses/>.
"""
from __future__ import annotations

from PyQt5.QtCore import QSize, Qt
from PyQt5.QtGui import QWheelEvent
from PyQt5.QtWidgets import QComboBox, QDialog, QDoubleSpinBox, QSpinBox, QToolButton, QWidget

from novelwriter import SHARED


class NDialog(QDialog):

    def softDelete(self) -> None:
        """Since calling deleteLater is sometimes not safe from Python,
        as the C++ object can be deleted before the Python process is
        done with the object, we instead set the dialog's parent to None
        so that it gets garbage collected when it runs out of scope.
        """
        self.setParent(None)  # type: ignore
        return


class NComboBox(QComboBox):

    def __init__(self, parent: QWidget | None = None) -> None:
        super().__init__(parent=parent)
        self.setFocusPolicy(Qt.FocusPolicy.StrongFocus)
        return

    def wheelEvent(self, event: QWheelEvent) -> None:
        if self.hasFocus():
            super().wheelEvent(event)
        else:
            event.ignore()
        return

    def setCurrentData(self, data: str, default: str) -> None:
        """Set the current index from data, with a fallback."""
        idx = self.findData(data)
        self.setCurrentIndex(self.findData(default) if idx < 0 else idx)
        return

# END Class NComboBox


class NSpinBox(QSpinBox):

    def __init__(self, parent: QWidget | None = None) -> None:
        super().__init__(parent=parent)
        self.setFocusPolicy(Qt.FocusPolicy.StrongFocus)
        return

    def wheelEvent(self, event: QWheelEvent) -> None:
        if self.hasFocus():
            super().wheelEvent(event)
        else:
            event.ignore()
        return

# END Class NSpinBox


class NDoubleSpinBox(QDoubleSpinBox):

    def __init__(self, parent: QWidget | None = None) -> None:
        super().__init__(parent=parent)
        self.setFocusPolicy(Qt.FocusPolicy.StrongFocus)
        return

    def wheelEvent(self, event: QWheelEvent) -> None:
        if self.hasFocus():
            super().wheelEvent(event)
        else:
            event.ignore()
        return

# END Class NDoubleSpinBox


class NIconToolButton(QToolButton):

    def __init__(self, parent: QWidget, iconSize: QSize, icon: str | None = None) -> None:
        super().__init__(parent=parent)
        self.setToolButtonStyle(Qt.ToolButtonStyle.ToolButtonIconOnly)
        self.setIconSize(iconSize)
        self.setPopupMode(QToolButton.ToolButtonPopupMode.InstantPopup)
        if icon:
            self.setThemeIcon(icon)
        return

    def setThemeIcon(self, iconKey: str) -> None:
        """Set an icon from the current theme."""
        self.setIcon(SHARED.theme.getIcon(iconKey))
        return

# END Class NIconToolButton


class NIconToggleButton(QToolButton):

    def __init__(self, parent: QWidget, iconSize: QSize, icon: str | None = None) -> None:
        super().__init__(parent=parent)
        self.setToolButtonStyle(Qt.ToolButtonStyle.ToolButtonIconOnly)
        self.setIconSize(iconSize)
        self.setPopupMode(QToolButton.ToolButtonPopupMode.InstantPopup)
        self.setCheckable(True)
        self.setStyleSheet("border: none; background: transparent;")
        if icon:
            self.setThemeIcon(icon)
        return

    def setThemeIcon(self, iconKey: str) -> None:
        """Set an icon from the current theme."""
        iconSize = self.iconSize()
        self.setIcon(SHARED.theme.getToggleIcon(iconKey, (iconSize.width(), iconSize.height())))
        return

# END Class NUnfoldButton