#!/usr/bin/env python


#############################################################################
##
## Copyright (C) 2010 Hans-Peter Jansen <hpj@urpla.net>.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
##   * Redistributions of source code must retain the above copyright
##     notice, this list of conditions and the following disclaimer.
##   * Redistributions in binary form must reproduce the above copyright
##     notice, this list of conditions and the following disclaimer in
##     the documentation and/or other materials provided with the
##     distribution.
##   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
##     the names of its contributors may be used to endorse or promote
##     products derived from this software without specific prior written
##     permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
## $QT_END_LICENSE$
##
###########################################################################


# This is only needed for Python v2 but is harmless for Python v3.
import sip
sip.setapi('QString', 2)

from PyQt4 import QtCore, QtGui, QtWebKit

from ui_window import Ui_Window


class SimpleSelector(QtGui.QWidget, Ui_Window):
    def __init__(self, parent=None):
        super(SimpleSelector, self).__init__(parent)

        self.setupUi(self)
        self._lastElements = []

    def on_elementLineEdit_returnPressed(self):
        frame = self.webView.page().mainFrame()

        # Select elements.
        document = frame.documentElement()
        elements = document.findAll(self.elementLineEdit.text())

        for element in self._lastElements:
            element.removeAttribute('style')

        for element in elements:
            element.setAttribute('style', 'background-color: #f0f090')

        self._lastElements = elements

    def on_highlightButton_clicked(self):
        self.on_elementLineEdit_returnPressed()
 
    def setUrl(self, url):
        self.webView.setUrl(url)


if __name__ == '__main__':

    import sys

    app = QtGui.QApplication(sys.argv)

    win = SimpleSelector()
    win.setUrl(QtCore.QUrl('http://www.webkit.org'))
    win.show()

    sys.exit(app.exec_())
