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toolbarsearch.cpp Example File
demos/browser/toolbarsearch.cpp

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 #include "toolbarsearch.h"
 #include "autosave.h"

 #include <QtCore/QUrl>
 #include <QtCore/QSettings>

 #include <QtGui/QMenu>
 #include <QtGui/QCompleter>
 #include <QtGui/QStringListModel>

 /*
     ToolbarSearch is a very basic search widget that also contains a small history.
     Searches are turned into urls that use Google to perform search
  */
 ToolbarSearch::ToolbarSearch(QWidget *parent) : SearchLineEdit(parent),
     m_autosave(new AutoSave(this))
 {
     QMenu *m = menu();
     connect(m, SIGNAL(aboutToShow()), this, SLOT(aboutToShowMenu()));
     connect(m, SIGNAL(triggered(QAction*)), this, SLOT(triggeredMenuAction(QAction*)));

     stringListModel = new QStringListModel(this);
     QCompleter *completer = new QCompleter(stringListModel, this);
     completer->setCompletionMode(QCompleter::InlineCompletion);
     setCompleter(completer);

     connect(this, SIGNAL(returnPressed()), SLOT(searchNow()));
     setInactiveText(tr("Google"));
     load();
 }

 ToolbarSearch::~ToolbarSearch()
 {
     m_autosave->saveNow();
 }

 void ToolbarSearch::save()
 {
     QSettings settings;
     settings.beginGroup("toolbarsearch");
     settings.setValue("recentSearches", stringListModel->stringList());
     settings.setValue("maximumSaved", m_maxSavedSearches);
 }

 void ToolbarSearch::load()
 {
     QSettings settings;
     settings.beginGroup("toolbarsearch");
     QStringList list = settings.value("recentSearches").toStringList();
     m_maxSavedSearches = settings.value("maximumSaved", 10).toInt();
     stringListModel->setStringList(list);
 }

 void ToolbarSearch::searchNow()
 {
     QString searchText = text();
     QStringList list = stringListModel->stringList();
     if (list.contains(searchText))
         list.removeAt(list.indexOf(searchText));
     list.prepend(searchText);
     if (list.size() >= m_maxSavedSearches)
         list.removeLast();
     stringListModel->setStringList(list);
     m_autosave->changed();

     QUrl url("http://www.google.com/search");
     url.addQueryItem("q", searchText);
     url.addQueryItem("ie", "UTF-8");
     url.addQueryItem("oe", "UTF-8");
     emit search(url);
 }

 void ToolbarSearch::aboutToShowMenu()
 {
     selectAll();
     QMenu *m = menu();
     m->clear();
     QStringList list = stringListModel->stringList();
     if (list.isEmpty()) {
         m->addAction(tr("No Recent Searches"));
         return;
     }

     QAction *recent = m->addAction(tr("Recent Searches"));
     recent->setEnabled(false);
     for (int i = 0; i < list.count(); ++i)
         m->addAction(list.at(i))->setData(list.at(i));
     m->addSeparator();
     m->addAction(tr("Clear Recent Searches"), this, SLOT(clear()));
 }

 void ToolbarSearch::triggeredMenuAction(QAction *action)
 {
     QVariant v = action->data();
     if (v.canConvert<QString>()) {
         QString text = v.toString();
         setText(text);
         searchNow();
     }
 }

 void ToolbarSearch::clear()
 {
     stringListModel->setStringList(QStringList());
     m_autosave->changed();
 }


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Qt 4.4.0-beta1