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local QtCore = require 'qtcore'
-- local QtGui = require 'qtgui'
local QtWidgets = require 'qtwidgets'
local QtUiTools = require 'qtuitools'

local Class = QtCore.Class('StyleSheetEditor', QtWidgets.QDialog) {}

function Class:__static_init()
    self:__addslot('on_styleCombo_activated(QString)', self.on_styleCombo_activated)
    self:__addslot('on_styleSheetCombo_activated(QString)', self.on_styleSheetCombo_activated)
    self:__addslot('on_styleTextEdit_textChanged()', self.on_styleTextEdit_textChanged)
    self:__addslot('on_applyButton_clicked()', self.on_applyButton_clicked)
end

function Class:__init()
    qSetupUi('stylesheeteditor.ui', self)
    -- self:setModal(true)

    local regExp = QtCore.QRegularExpression '^.(.*)\\+?Style$'
    local defaultStyle = QtWidgets.QApplication.style():metaObject():className()
    local match = regExp:match(defaultStyle)

    if match:hasMatch() then
    	defaultStyle = match:captured(1)
    end

    self.ui.styleCombo:addItems(QtWidgets.QStyleFactory.keys())
    self.ui.styleCombo:setCurrentIndex(self.ui.styleCombo:findText(defaultStyle, QtCore.MatchContains))
    self.ui.styleSheetCombo:setCurrentIndex(self.ui.styleSheetCombo:findText('Coffee'))
    self:loadStyleSheet 'Coffee'
end

function Class:on_styleCombo_activated(styleName)
	qApp().setStyle(styleName)
	self.ui.applyButton:setEnabled(false)
end

function Class:on_styleSheetCombo_activated(sheetName)
    self:loadStyleSheet(sheetName);
	self.ui.applyButton:setEnabled(true)
end

function Class:on_styleTextEdit_textChanged()
	self.ui.applyButton:setEnabled(true)
end

function Class:on_applyButton_clicked()
	qApp():setStyleSheet(ui.styleTextEdit:toPlainText())
	self.ui.applyButton:setEnabled(false)
end

function Class:loadStyleSheet(sheetName)
	local file = QtCore.QFile(QtCore.QString('qss/%1.qss'):arg(sheetName))
	file:open(QtCore.QIODevice.ReadOnly)
	local styleSheet = QtCore.QString.fromLatin1(file:readAll())

	self.ui.styleTextEdit:setPlainText(styleSheet)
	qApp():setStyleSheet(styleSheet)
	self.ui.applyButton:setEnabled(false)
end

return Class
