# Created By: Virgil Dupras
# Created On: 2011-01-21
# Copyright 2011 Hardcoded Software (http://www.hardcoded.net)
# 
# This software is licensed under the "BSD" License as described in the "LICENSE" file, 
# which should be included with this package. The terms are also available at 
# http://www.hardcoded.net/licenses/bsd_license

import sys
from PyQt4.QtCore import SIGNAL, Qt, QSize
from PyQt4.QtGui import (QDialog, QDialogButtonBox, QVBoxLayout, QHBoxLayout, QLabel, QComboBox,
    QSlider, QSizePolicy, QSpacerItem, QCheckBox, QLineEdit, QMessageBox)

from hscommon.trans import tr, trmsg

class PreferencesDialogBase(QDialog):
    def __init__(self, parent, app):
        flags = Qt.CustomizeWindowHint | Qt.WindowTitleHint | Qt.WindowSystemMenuHint
        QDialog.__init__(self, parent, flags)
        self.app = app
        self._setupUi()
        
        self.connect(self.filterHardnessSlider, SIGNAL("valueChanged(int)"), self.filterHardnessLabel.setNum)
        self.connect(self.buttonBox, SIGNAL('clicked(QAbstractButton*)'), self.buttonClicked)
        self.buttonBox.accepted.connect(self.accept)
        self.buttonBox.rejected.connect(self.reject)
    
    def _setupFilterHardnessBox(self):
        self.filterHardnessHLayout = QHBoxLayout()
        self.filterHardnessLabel = QLabel(self)
        self.filterHardnessLabel.setText(tr("Filter Hardness:"))
        self.filterHardnessLabel.setMinimumSize(QSize(0, 0))
        self.filterHardnessHLayout.addWidget(self.filterHardnessLabel)
        self.filterHardnessVLayout = QVBoxLayout()
        self.filterHardnessVLayout.setSpacing(0)
        self.filterHardnessHLayoutSub1 = QHBoxLayout()
        self.filterHardnessHLayoutSub1.setSpacing(12)
        self.filterHardnessSlider = QSlider(self)
        sizePolicy = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.filterHardnessSlider.sizePolicy().hasHeightForWidth())
        self.filterHardnessSlider.setSizePolicy(sizePolicy)
        self.filterHardnessSlider.setMinimum(1)
        self.filterHardnessSlider.setMaximum(100)
        self.filterHardnessSlider.setTracking(True)
        self.filterHardnessSlider.setOrientation(Qt.Horizontal)
        self.filterHardnessHLayoutSub1.addWidget(self.filterHardnessSlider)
        self.filterHardnessLabel = QLabel(self)
        self.filterHardnessLabel.setText("100")
        self.filterHardnessLabel.setMinimumSize(QSize(21, 0))
        self.filterHardnessHLayoutSub1.addWidget(self.filterHardnessLabel)
        self.filterHardnessVLayout.addLayout(self.filterHardnessHLayoutSub1)
        self.filterHardnessHLayoutSub2 = QHBoxLayout()
        self.filterHardnessHLayoutSub2.setContentsMargins(-1, 0, -1, -1)
        self.moreResultsLabel = QLabel(self)
        self.moreResultsLabel.setText(tr("More Results"))
        self.filterHardnessHLayoutSub2.addWidget(self.moreResultsLabel)
        spacerItem = QSpacerItem(40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum)
        self.filterHardnessHLayoutSub2.addItem(spacerItem)
        self.fewerResultsLabel = QLabel(self)
        self.fewerResultsLabel.setText(tr("Fewer Results"))
        self.filterHardnessHLayoutSub2.addWidget(self.fewerResultsLabel)
        self.filterHardnessVLayout.addLayout(self.filterHardnessHLayoutSub2)
        self.filterHardnessHLayout.addLayout(self.filterHardnessVLayout)
    
    def _setupBottomPart(self):
        # The bottom part of the pref panel is always the same in all editions.
        self.languageLabel = QLabel(tr("Language:"), self)
        self.widgetsVLayout.addWidget(self.languageLabel)
        self.languageComboBox = QComboBox(self)
        self.languageComboBox.addItem(tr("English"))
        self.languageComboBox.addItem(tr("French"))
        self.widgetsVLayout.addWidget(self.languageComboBox)
        self.copyMoveLabel = QLabel(self)
        self.copyMoveLabel.setText(tr("Copy and Move:"))
        self.widgetsVLayout.addWidget(self.copyMoveLabel)
        self.copyMoveDestinationComboBox = QComboBox(self)
        self.copyMoveDestinationComboBox.addItem(tr("Right in destination"))
        self.copyMoveDestinationComboBox.addItem(tr("Recreate relative path"))
        self.copyMoveDestinationComboBox.addItem(tr("Recreate absolute path"))
        self.widgetsVLayout.addWidget(self.copyMoveDestinationComboBox)
        self.customCommandLabel = QLabel(self)
        self.customCommandLabel.setText(tr("Custom Command (arguments: %d for dupe, %r for ref):"))
        self.widgetsVLayout.addWidget(self.customCommandLabel)
        self.customCommandEdit = QLineEdit(self)
        self.widgetsVLayout.addWidget(self.customCommandEdit)
    
    def _setupAddCheckbox(self, name, label, parent=None):
        if parent is None:
            parent = self
        cb = QCheckBox(parent)
        cb.setText(label)
        setattr(self, name, cb)
    
    def _setupPreferenceWidgets(self):
        # Edition-specific
        pass
    
    def _setupUi(self):
        self.setWindowTitle(tr("Preferences"))
        self.resize(304, 263)
        self.setSizeGripEnabled(False)
        self.setModal(True)
        self.mainVLayout = QVBoxLayout(self)
        self.widgetsVLayout = QVBoxLayout()
        self._setupPreferenceWidgets()
        self.mainVLayout.addLayout(self.widgetsVLayout)
        self.buttonBox = QDialogButtonBox(self)
        self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel|QDialogButtonBox.Ok|QDialogButtonBox.RestoreDefaults)
        self.mainVLayout.addWidget(self.buttonBox)
        if sys.platform not in {'darwin', 'linux2'}:
            self.verticalLayout.removeWidget(self.ignoreHardlinkMatches)
            self.ignoreHardlinkMatches.setHidden(True)
    
    def _load(self, prefs, setchecked):
        # Edition-specific
        pass
    
    def _save(self, prefs, ischecked):
        # Edition-specific
        pass
    
    def load(self, prefs=None):
        if prefs is None:
            prefs = self.app.prefs
        self.filterHardnessSlider.setValue(prefs.filter_hardness)
        self.filterHardnessLabel.setNum(prefs.filter_hardness)
        setchecked = lambda cb, b: cb.setCheckState(Qt.Checked if b else Qt.Unchecked)
        setchecked(self.mixFileKindBox, prefs.mix_file_kind)
        setchecked(self.useRegexpBox, prefs.use_regexp)
        setchecked(self.removeEmptyFoldersBox, prefs.remove_empty_folders)
        setchecked(self.ignoreHardlinkMatches, prefs.ignore_hardlink_matches)
        self.copyMoveDestinationComboBox.setCurrentIndex(prefs.destination_type)
        self.customCommandEdit.setText(prefs.custom_command)
        langindex = {'fr': 1}.get(self.app.prefs.language, 0)
        self.languageComboBox.setCurrentIndex(langindex)
        self._load(prefs, setchecked)
    
    def save(self):
        prefs = self.app.prefs
        prefs.filter_hardness = self.filterHardnessSlider.value()
        ischecked = lambda cb: cb.checkState() == Qt.Checked
        prefs.mix_file_kind = ischecked(self.mixFileKindBox)
        prefs.use_regexp = ischecked(self.useRegexpBox)
        prefs.remove_empty_folders = ischecked(self.removeEmptyFoldersBox)
        prefs.ignore_hardlink_matches = ischecked(self.ignoreHardlinkMatches)
        prefs.destination_type = self.copyMoveDestinationComboBox.currentIndex()
        prefs.custom_command = str(self.customCommandEdit.text())
        langs = ['en', 'fr']
        lang = langs[self.languageComboBox.currentIndex()]
        oldlang = self.app.prefs.language
        if oldlang not in langs:
            oldlang = 'en'
        if lang != oldlang:
            QMessageBox.information(self, "", trmsg("NeedsToRestartToApplyLangMsg"))
        self.app.prefs.language = lang
        self._save(prefs, ischecked)
    
    #--- Events
    def buttonClicked(self, button):
        role = self.buttonBox.buttonRole(button)
        if role == QDialogButtonBox.ResetRole:
            self.resetToDefaults()