demos/browser/toolbarsearch.cpp

   1 /****************************************************************************
   2 **
   3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
   4 ** All rights reserved.
   5 ** Contact: Nokia Corporation (qt-info@nokia.com)
   6 **
   7 ** This file is part of the demonstration applications of the Qt Toolkit.
   8 **
   9 ** $QT_BEGIN_LICENSE:LGPL$
  10 ** No Commercial Usage
  11 ** This file contains pre-release code and may not be distributed.
  12 ** You may use this file in accordance with the terms and conditions
  13 ** contained in the Technology Preview License Agreement accompanying
  14 ** this package.
  15 **
  16 ** GNU Lesser General Public License Usage
  17 ** Alternatively, this file may be used under the terms of the GNU Lesser
  18 ** General Public License version 2.1 as published by the Free Software
  19 ** Foundation and appearing in the file LICENSE.LGPL included in the
  20 ** packaging of this file.  Please review the following information to
  21 ** ensure the GNU Lesser General Public License version 2.1 requirements
  22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  23 **
  24 ** In addition, as a special exception, Nokia gives you certain additional
  25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
  26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  27 **
  28 ** If you have questions regarding the use of this file, please contact
  29 ** Nokia at qt-info@nokia.com.
  30 **
  31 **
  32 **
  33 **
  34 **
  35 **
  36 **
  37 **
  38 ** $QT_END_LICENSE$
  39 **
  40 ****************************************************************************/
  41
  42 #include "toolbarsearch.h"
  43 #include "autosaver.h"
  44
  45 #include <QtCore/QSettings>
  46 #include <QtCore/QUrl>
  47
  48 #include <QtGui/QCompleter>
  49 #include <QtGui/QMenu>
  50 #include <QtGui/QStringListModel>
  51
  52 #include <QtWebKit/QWebSettings>
  53
  54 /*
  55     ToolbarSearch is a very basic search widget that also contains a small history.
  56     Searches are turned into urls that use Google to perform search
  57  */
  58 ToolbarSearch::ToolbarSearch(QWidget *parent)
  59     : SearchLineEdit(parent)
  60     , m_autosaver(new AutoSaver(this))
  61     , m_maxSavedSearches(10)
  62     , m_stringListModel(new QStringListModel(this))
  63 {
  64     QMenu *m = menu();
  65     connect(m, SIGNAL(aboutToShow()), this, SLOT(aboutToShowMenu()));
  66     connect(m, SIGNAL(triggered(QAction*)), this, SLOT(triggeredMenuAction(QAction*)));
  67
  68     QCompleter *completer = new QCompleter(m_stringListModel, this);
  69     completer->setCompletionMode(QCompleter::InlineCompletion);
  70     lineEdit()->setCompleter(completer);
  71
  72     connect(lineEdit(), SIGNAL(returnPressed()), SLOT(searchNow()));
  73     setInactiveText(tr("Google"));
  74     load();
  75 }
  76
  77 ToolbarSearch::~ToolbarSearch()
  78 {
  79     m_autosaver->saveIfNeccessary();
  80 }
  81
  82 void ToolbarSearch::save()
  83 {
  84     QSettings settings;
  85     settings.beginGroup(QLatin1String("toolbarsearch"));
  86     settings.setValue(QLatin1String("recentSearches"), m_stringListModel->stringList());
  87     settings.setValue(QLatin1String("maximumSaved"), m_maxSavedSearches);
  88     settings.endGroup();
  89 }
  90
  91 void ToolbarSearch::load()
  92 {
  93     QSettings settings;
  94     settings.beginGroup(QLatin1String("toolbarsearch"));
  95     QStringList list = settings.value(QLatin1String("recentSearches")).toStringList();
  96     m_maxSavedSearches = settings.value(QLatin1String("maximumSaved"), m_maxSavedSearches).toInt();
  97     m_stringListModel->setStringList(list);
  98     settings.endGroup();
  99 }
 100
 101 void ToolbarSearch::searchNow()
 102 {
 103     QString searchText = lineEdit()->text();
 104     QStringList newList = m_stringListModel->stringList();
 105     if (newList.contains(searchText))
 106         newList.removeAt(newList.indexOf(searchText));
 107     newList.prepend(searchText);
 108     if (newList.size() >= m_maxSavedSearches)
 109         newList.removeLast();
 110
 111     QWebSettings *globalSettings = QWebSettings::globalSettings();
 112     if (!globalSettings->testAttribute(QWebSettings::PrivateBrowsingEnabled)) {
 113         m_stringListModel->setStringList(newList);
 114         m_autosaver->changeOccurred();
 115     }
 116
 117     QUrl url(QLatin1String("http://www.google.com/search"));
 118     url.addQueryItem(QLatin1String("q"), searchText);
 119     url.addQueryItem(QLatin1String("ie"), QLatin1String("UTF-8"));
 120     url.addQueryItem(QLatin1String("oe"), QLatin1String("UTF-8"));
 121     url.addQueryItem(QLatin1String("client"), QLatin1String("qtdemobrowser"));
 122     emit search(url);
 123 }
 124
 125 void ToolbarSearch::aboutToShowMenu()
 126 {
 127     lineEdit()->selectAll();
 128     QMenu *m = menu();
 129     m->clear();
 130     QStringList list = m_stringListModel->stringList();
 131     if (list.isEmpty()) {
 132         m->addAction(tr("No Recent Searches"));
 133         return;
 134     }
 135
 136     QAction *recent = m->addAction(tr("Recent Searches"));
 137     recent->setEnabled(false);
 138     for (int i = 0; i < list.count(); ++i) {
 139         QString text = list.at(i);
 140         m->addAction(text)->setData(text);
 141     }
 142     m->addSeparator();
 143     m->addAction(tr("Clear Recent Searches"), this, SLOT(clear()));
 144 }
 145
 146 void ToolbarSearch::triggeredMenuAction(QAction *action)
 147 {
 148     QVariant v = action->data();
 149     if (v.canConvert<QString>()) {
 150         QString text = v.toString();
 151         lineEdit()->setText(text);
 152         searchNow();
 153     }
 154 }
 155
 156 void ToolbarSearch::clear()
 157 {
 158     m_stringListModel->setStringList(QStringList());
 159     m_autosaver->changeOccurred();;
 160 }
 161