git.maemo.org Git - qtrapids/blob - src/plugins/searchplugin/SearchPlugin.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2009 by Lassi Väätämöinen   *
   3  *   lassi.vaatamoinen@ixonos.com   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include <QDebug>
  22 #include <QtCore/qplugin.h>
  23 #include <QVBoxLayout>
  24 #include <QHBoxLayout>
  25 #include <QComboBox>
  26 #include <QLineEdit>
  27 #include <QPushButton>
  28 #include <QUrl>
  29 #include <QDir>
  30 #include <QFileInfo>
  31 #include <QWebView>
  32 #include <QWebPage>
  33 #include <QDomDocument>
  34
  35 #include "SearchPlugin.h"
  36 #include "DownloadManager.h"
  37
  38 namespace qtrapids
  39 {
  40         const QString ENGINES_DIR = "engines";
  41         const QString DESCRIPTION_FILENAME = "opensearch.xml";
  42         const QString SEARCH_TERMS_STRING = "{searchTerms}";
  43
  44
  45         SearchPlugin::SearchPlugin() :
  46                 comboBox_(NULL), searchLine_(NULL),
  47                 searchButton_(NULL), result_(NULL),
  48                 dlManager_(NULL), host_(NULL)
  49         {
  50                 // TODO: Parse search engine XML(?) descriptions.
  51                 // -Add search engines to model
  52                 // -Show model in comboBox
  53                 // Add back/forward/refresh -buttons to widget to allow some browsing
  54
  55         }
  56
  57         void SearchPlugin::initialize(PluginHostInterface* host, Info info)
  58         {
  59                 host_ = host;
  60
  61                 if (host_ != NULL) {
  62
  63                         // Build up the plugin widget:
  64                         QWidget *pluginWidget = new QWidget;
  65                         QVBoxLayout *vbox = new QVBoxLayout;
  66                         QHBoxLayout *hbox = new QHBoxLayout;
  67                         comboBox_ = new QComboBox;
  68                         searchLine_ = new QLineEdit;
  69                         searchButton_ = new QPushButton("Search");
  70
  71                         hbox->addWidget(searchLine_);
  72                         hbox->addWidget(searchButton_);
  73                         vbox->addWidget(comboBox_);
  74                         vbox->addLayout(hbox);
  75                         pluginWidget->setLayout(vbox);
  76
  77                         connect(searchButton_, SIGNAL(clicked()), this, SLOT(on_searchButton_clicked()));
  78                         //connect(this, SIGNAL(searchResult(QWidget*)), this, SLOT(on_searchResult(QWidget*)));
  79                         qDebug() << info.directory;
  80                         QDir dir(info.directory);
  81                         if (dir.cd(ENGINES_DIR)) {
  82                                 ParseSearchEngineDescriptions(dir);
  83                         }
  84
  85                         host_->setGui(pluginWidget, qtrapids::PluginHostInterface::BASE_WIDGET);
  86                 }
  87         }
  88
  89         QWidget* SearchPlugin::getGui()
  90         {
  91                 return NULL;
  92         }
  93
  94
  95         void SearchPlugin::on_searchButton_clicked()
  96         {
  97
  98                 int i = comboBox_->currentIndex();
  99                 QString tmp = engineTemplates_.at(i);
 100                 i = tmp.indexOf(SEARCH_TERMS_STRING);
 101                 tmp.replace(i, SEARCH_TERMS_STRING.length(), searchLine_->text());
 102                 QUrl searchUrl(tmp);
 103                 qDebug() << searchUrl;
 104                 result_ = new QWebView;
 105
 106                 // Get underlying QWebPage and change link delegation, so we can meddle with links in on_linkClicked().
 107                 QWebPage *resultPage = result_->page();
 108                 resultPage->setLinkDelegationPolicy(QWebPage::DelegateExternalLinks);
 109
 110                 connect(resultPage, SIGNAL(linkClicked(const QUrl&)), this, SLOT(on_linkClicked(const QUrl&)));
 111                 connect(result_, SIGNAL(loadFinished(bool)), this, SLOT(on_loadFinished(bool)));
 112
 113                 result_->load(searchUrl);
 114
 115                 on_searchResult((QWidget*)result_);
 116         }
 117
 118
 119         void SearchPlugin::on_loadFinished(bool ok)
 120         {
 121 #ifdef QTRAPIDS_DEBUG
 122                 if (ok) {
 123                         qDebug() << "on_loadFinished(): success";
 124                 }
 125 #endif
 126         }
 127
 128
 129         void SearchPlugin::on_searchResult(QWidget* resultWidget)
 130         {
 131 #ifdef QTRAPIDS_DEBUG
 132                 qDebug() << "on_searchResult()";
 133 #endif
 134                 if (host_) {
 135                         host_->addPluginWidget(resultWidget, qtrapids::PluginHostInterface::TAB_PAGE);
 136                 }
 137         }
 138
 139         void SearchPlugin::on_linkClicked(const QUrl& url)
 140         {
 141                 // Get the path part of URL (the part after the host part)
 142                 QString path = url.path();
 143                 QFileInfo fInfo(path);
 144
 145                 // Check path suffix. If it is .torrent, we should download:
 146                 /// @todo We should actually check for MIME-type application/x-bittorrent in HTTP response,
 147                 /// instead of relying on file suffix.
 148                 /// e.g. link
 149                 ///http://www.bitenova.org/download.php?id=c84375141231eef49fc6c55e6347ba4f4a623a05&name=Nero_Linux_3.5.1.0__(Debian)_deutsch
 150                 /// will not work.
 151                 /// @todo Also, after downloading, the torrent bencoding validity should be checked at plugin host..
 152                 if (fInfo.suffix() == "torrent") {
 153 #ifdef QTRAPIDS_DEBUG
 154                         qDebug() << "IS TORRENT";
 155 #endif
 156                         QString filename = fInfo.fileName();
 157
 158                         // Destroy ongoing download, if any.
 159                         if (dlManager_) {
 160                                 delete dlManager_;
 161                                 dlManager_ = NULL;
 162                         }
 163
 164                         // Start downloading Torrent file.
 165                         dlManager_ = new DownloadManager(url, "/tmp/" + filename);
 166                         connect(dlManager_, SIGNAL(finished(QString)), this, SLOT(on_downloadFinished(QString)));
 167                         dlManager_->start();
 168
 169                 } else {
 170                         // If was not .torrent -file, check URL validity and load the page as usual.
 171                         if (url.isValid()) {
 172                                 result_->load(url);
 173                         }
 174                 }
 175         }
 176
 177         void SearchPlugin::on_downloadFinished(QString filepath)
 178         {
 179 #ifdef QTRAPIDS_DEBUG
 180                 qDebug() << "TORRENT DOWNLOADED: " << filepath;
 181 #endif
 182                 delete dlManager_;
 183                 dlManager_ = NULL;
 184                 host_->eventRequest(QVariant(filepath), qtrapids::PluginHostInterface::OPEN_FILE);
 185         }
 186
 187
 188         void SearchPlugin::ParseSearchEngineDescriptions(const QDir& dir)
 189         {
 190                 foreach (QString dirName, dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot)) {
 191
 192                                 QFile file(dir.path() + "/" + dirName + "/" + DESCRIPTION_FILENAME);
 193
 194                                 if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
 195                                         qWarning() << "Unable to open " << DESCRIPTION_FILENAME << " for reading in " << dir.path();
 196                                         continue;
 197                                 }
 198
 199                                 // Parse the XML file to DOM document.
 200                                 QDomDocument document;
 201
 202                                 // Second parameter: nameSpaceProcessing = false
 203                                 if (!document.setContent(&file, false)) {
 204                                         qWarning() << "Unable to parse " << DESCRIPTION_FILENAME << " in " << dirName;
 205                                 } else {
 206                                         QDomNodeList urlElements = document.elementsByTagName("Url");
 207                                         QDomNodeList shortNameElements = document.elementsByTagName("ShortName");
 208
 209                                         QDomNode n = urlElements.item(0);
 210                                         QDomNode m;
 211                                         QDomNamedNodeMap attribMap;
 212                                         if (n.hasAttributes()) {
 213                                                 attribMap = n.attributes();
 214                                                 m = attribMap.namedItem("template");
 215                                                 engineTemplates_.push_back(m.nodeValue());
 216                                         }
 217
 218                                         n = shortNameElements.item(0);
 219                                         if (n.hasChildNodes()) {
 220                                                 m = n.firstChild();
 221                                                 comboBox_->addItem(m.nodeValue());
 222                                         }
 223                                 }
 224                         }
 225
 226
 227                         /// @todo save parsed xml elements <Shortname> and <Url template="<foo>"> to a model which is displayed in combobox.
 228                 }
 229
 230                                                 /*
 231                 QDomElement docElem = document.documentElement();
 232                 QDomNode n = docElem.firstChild();
 233                 while(!n.isNull()) {
 234                         QDomElement e = n.toElement(); // try to convert the node to an element.
 235                         if(!e.isNull()) {
 236                                 qDebug() << qPrintable(e.tagName()); // the node really is an element.
 237                         }
 238                         n = n.nextSibling();
 239                 }
 240                 */
 241
 242 } // namespace qtrapids
 243
 244 Q_EXPORT_PLUGIN2(searchplugin, qtrapids::SearchPlugin)