1/*
2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
3 * Copyright (C) 2009 University of Szeged
4 *
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
24 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "UrlLoader.h"
30
31#include <QDebug>
32#include <QFile>
33
34UrlLoader::UrlLoader(BrowserWindow* browserWindow, const QString& inputFileName, int timeoutSeconds, int extraTimeSeconds)
35    : m_browserWindow(browserWindow)
36    , m_stdOut(stdout)
37    , m_loaded(0)
38    , m_numFramesLoading(0)
39{
40    m_checkIfFinishedTimer.setInterval(200);
41    m_checkIfFinishedTimer.setSingleShot(true);
42    connect(&m_checkIfFinishedTimer, SIGNAL(timeout()), this, SLOT(checkIfFinished()));
43    // loadStarted and loadFinished on QWebPage is emitted for each frame/sub-frame
44    connect(m_browserWindow->page(), SIGNAL(loadStarted()), this, SLOT(frameLoadStarted()));
45    connect(m_browserWindow->page(), SIGNAL(loadFinished(bool)), this, SLOT(frameLoadFinished()));
46
47    if (timeoutSeconds) {
48        m_timeoutTimer.setInterval(timeoutSeconds * 1000);
49        m_timeoutTimer.setSingleShot(true);
50        connect(m_browserWindow->page(), SIGNAL(loadStarted()), &m_timeoutTimer, SLOT(start()));
51        connect(&m_timeoutTimer, SIGNAL(timeout()), this, SLOT(loadNext()));
52    }
53    if (extraTimeSeconds) {
54        m_extraTimeTimer.setInterval(extraTimeSeconds * 1000);
55        m_extraTimeTimer.setSingleShot(true);
56        connect(this, SIGNAL(pageLoadFinished()), &m_extraTimeTimer, SLOT(start()));
57        connect(&m_extraTimeTimer, SIGNAL(timeout()), this, SLOT(loadNext()));
58    } else
59        connect(this, SIGNAL(pageLoadFinished()), this, SLOT(loadNext()));
60    loadUrlList(inputFileName);
61}
62
63void UrlLoader::loadNext()
64{
65    m_timeoutTimer.stop();
66    m_extraTimeTimer.stop();
67    m_checkIfFinishedTimer.stop();
68    m_numFramesLoading = 0;
69    QString qstr;
70    if (getUrl(qstr)) {
71        QUrl url(qstr, QUrl::StrictMode);
72        if (url.isValid()) {
73            m_stdOut << "Loading " << qstr << " ......" << ++m_loaded << endl;
74            m_browserWindow->load(url.toString());
75        } else
76            loadNext();
77    } else
78        disconnect(m_browserWindow, 0, this, 0);
79}
80
81void UrlLoader::checkIfFinished()
82{
83    if (!m_numFramesLoading)
84        emit pageLoadFinished();
85}
86
87void UrlLoader::frameLoadStarted()
88{
89    ++m_numFramesLoading;
90    m_checkIfFinishedTimer.stop();
91}
92
93void UrlLoader::frameLoadFinished()
94{
95    Q_ASSERT(m_numFramesLoading > 0);
96    --m_numFramesLoading;
97    // Once our frame has finished loading, wait a moment to call loadNext for cases
98    // where a sub-frame starts loading or another frame is loaded through JavaScript.
99    m_checkIfFinishedTimer.start();
100}
101
102void UrlLoader::loadUrlList(const QString& inputFileName)
103{
104    QFile inputFile(inputFileName);
105    if (inputFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
106        QTextStream stream(&inputFile);
107        QString line;
108        while (true) {
109            line = stream.readLine();
110            if (line.isNull())
111                break;
112            m_urls.append(line);
113        }
114    } else {
115        qDebug() << "Can't open list file";
116        exit(0);
117    }
118    m_index = 0;
119    inputFile.close();
120}
121
122bool UrlLoader::getUrl(QString& qstr)
123{
124    if (m_index == m_urls.size())
125        return false;
126
127    qstr = m_urls[m_index++];
128    return true;
129}
130