--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/util/examples/network/googlesuggest/googlesuggest.cpp Wed Mar 31 11:06:36 2010 +0300
@@ -0,0 +1,235 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+//! [1]
+#include "googlesuggest.h"
+
+#define GSUGGEST_URL "http://google.com/complete/search?output=toolbar&q=%1"
+//! [1]
+
+//! [2]
+GSuggestCompletion::GSuggestCompletion(QLineEdit *parent): QObject(parent), editor(parent)
+{
+ popup = new QTreeWidget;
+ popup->setWindowFlags(Qt::Popup);
+ popup->setFocusPolicy(Qt::NoFocus);
+ popup->setFocusProxy(parent);
+ popup->setMouseTracking(true);
+
+ popup->setColumnCount(2);
+ popup->setUniformRowHeights(true);
+ popup->setRootIsDecorated(false);
+ popup->setEditTriggers(QTreeWidget::NoEditTriggers);
+ popup->setSelectionBehavior(QTreeWidget::SelectRows);
+ popup->setFrameStyle(QFrame::Box | QFrame::Plain);
+ popup->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ popup->header()->hide();
+
+ popup->installEventFilter(this);
+
+ connect(popup, SIGNAL(itemClicked(QTreeWidgetItem*,int)),
+ SLOT(doneCompletion()));
+
+ timer = new QTimer(this);
+ timer->setSingleShot(true);
+ timer->setInterval(500);
+ connect(timer, SIGNAL(timeout()), SLOT(autoSuggest()));
+ connect(editor, SIGNAL(textEdited(QString)), timer, SLOT(start()));
+
+ connect(&networkManager, SIGNAL(finished(QNetworkReply*)),
+ this, SLOT(handleNetworkData(QNetworkReply*)));
+
+}
+//! [2]
+
+//! [3]
+GSuggestCompletion::~GSuggestCompletion()
+{
+ delete popup;
+}
+//! [3]
+
+//! [4]
+bool GSuggestCompletion::eventFilter(QObject *obj, QEvent *ev)
+{
+ if (obj != popup)
+ return false;
+
+ if (ev->type() == QEvent::MouseButtonPress) {
+ popup->hide();
+ editor->setFocus();
+ return true;
+ }
+
+ if (ev->type() == QEvent::KeyPress) {
+
+ bool consumed = false;
+ int key = static_cast<QKeyEvent*>(ev)->key();
+ switch (key) {
+ case Qt::Key_Enter:
+ case Qt::Key_Return:
+ doneCompletion();
+ consumed = true;
+
+ case Qt::Key_Escape:
+ editor->setFocus();
+ popup->hide();
+ consumed = true;
+
+ case Qt::Key_Up:
+ case Qt::Key_Down:
+ case Qt::Key_Home:
+ case Qt::Key_End:
+ case Qt::Key_PageUp:
+ case Qt::Key_PageDown:
+ break;
+
+ default:
+ editor->setFocus();
+ editor->event(ev);
+ popup->hide();
+ break;
+ }
+
+ return consumed;
+ }
+
+ return false;
+}
+//! [4]
+
+//! [5]
+void GSuggestCompletion::showCompletion(const QStringList &choices, const QStringList &hits)
+{
+
+ if (choices.isEmpty() || choices.count() != hits.count())
+ return;
+
+ const QPalette &pal = editor->palette();
+ QColor color = pal.color(QPalette::Disabled, QPalette::WindowText);
+
+ popup->setUpdatesEnabled(false);
+ popup->clear();
+ for (int i = 0; i < choices.count(); ++i) {
+ QTreeWidgetItem * item;
+ item = new QTreeWidgetItem(popup);
+ item->setText(0, choices[i]);
+ item->setText(1, hits[i]);
+ item->setTextAlignment(1, Qt::AlignRight);
+ item->setTextColor(1, color);
+ }
+ popup->setCurrentItem(popup->topLevelItem(0));
+ popup->resizeColumnToContents(0);
+ popup->resizeColumnToContents(1);
+ popup->adjustSize();
+ popup->setUpdatesEnabled(true);
+
+ int h = popup->sizeHintForRow(0) * qMin(7, choices.count()) + 3;
+ popup->resize(popup->width(), h);
+
+ popup->move(editor->mapToGlobal(QPoint(0, editor->height())));
+ popup->setFocus();
+ popup->show();
+}
+//! [5]
+
+//! [6]
+void GSuggestCompletion::doneCompletion()
+{
+ timer->stop();
+ popup->hide();
+ editor->setFocus();
+ QTreeWidgetItem *item = popup->currentItem();
+ if (item) {
+ editor->setText(item->text(0));
+ QMetaObject::invokeMethod(editor, "returnPressed");
+ }
+}
+//! [6]
+
+//! [7]
+void GSuggestCompletion::autoSuggest()
+{
+ QString str = editor->text();
+ QString url = QString(GSUGGEST_URL).arg(str);
+ networkManager.get(QNetworkRequest(QString(url)));
+}
+//! [7]
+
+//! [8]
+void GSuggestCompletion::preventSuggest()
+{
+ timer->stop();
+}
+//! [8]
+
+//! [9]
+void GSuggestCompletion::handleNetworkData(QNetworkReply *networkReply)
+{
+ QUrl url = networkReply->url();
+ if (!networkReply->error()) {
+ QStringList choices;
+ QStringList hits;
+
+ QByteArray response(networkReply->readAll());
+ QXmlStreamReader xml(response);
+ while (!xml.atEnd()) {
+ xml.readNext();
+ if (xml.tokenType() == QXmlStreamReader::StartElement)
+ if (xml.name() == "suggestion") {
+ QStringRef str = xml.attributes().value("data");
+ choices << str.toString();
+ }
+ if (xml.tokenType() == QXmlStreamReader::StartElement)
+ if (xml.name() == "num_queries") {
+ QStringRef str = xml.attributes().value("int");
+ hits << str.toString();
+ }
+ }
+
+ showCompletion(choices, hits);
+ }
+
+ networkReply->deleteLater();
+}
+//! [9]
+