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-rw-r--r--examples/network/googlesuggest/googlesuggest.cpp231
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diff --git a/examples/network/googlesuggest/googlesuggest.cpp b/examples/network/googlesuggest/googlesuggest.cpp
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--- a/examples/network/googlesuggest/googlesuggest.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in
-** the documentation and/or other materials provided with the
-** distribution.
-** * Neither the name of The Qt Company Ltd nor the names of its
-** contributors may be used to endorse or promote products derived
-** from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "googlesuggest.h"
-
-//! [1]
-const QString gsuggestUrl(QStringLiteral("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(1);
- 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, &QTreeWidget::itemClicked,
- this, &GSuggestCompletion::doneCompletion);
-
- timer.setSingleShot(true);
- timer.setInterval(500);
- connect(&timer, &QTimer::timeout,
- this, &GSuggestCompletion::autoSuggest);
- connect(editor, &QLineEdit::textEdited,
- &timer, QOverload<>::of(&QTimer::start));
-
- connect(&networkManager, &QNetworkAccessManager::finished,
- this, &GSuggestCompletion::handleNetworkData);
-
-}
-//! [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;
- break;
-
- case Qt::Key_Escape:
- editor->setFocus();
- popup->hide();
- consumed = true;
- break;
-
- 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 QList<QString> &choices)
-{
- if (choices.isEmpty())
- return;
-
- const QPalette &pal = editor->palette();
- QColor color = pal.color(QPalette::Disabled, QPalette::WindowText);
-
- popup->setUpdatesEnabled(false);
- popup->clear();
-
- for (const auto &choice : choices) {
- auto item = new QTreeWidgetItem(popup);
- item->setText(0, choice);
- item->setForeground(0, color);
- }
-
- popup->setCurrentItem(popup->topLevelItem(0));
- popup->resizeColumnToContents(0);
- popup->setUpdatesEnabled(true);
-
- 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 = gsuggestUrl.arg(str);
- networkManager.get(QNetworkRequest(url));
-}
-//! [7]
-
-//! [8]
-void GSuggestCompletion::preventSuggest()
-{
- timer.stop();
-}
-//! [8]
-
-//! [9]
-void GSuggestCompletion::handleNetworkData(QNetworkReply *networkReply)
-{
- QUrl url = networkReply->url();
- if (networkReply->error() == QNetworkReply::NoError) {
- QList<QString> choices;
-
- 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();
- }
- }
-
- showCompletion(choices);
- }
-
- networkReply->deleteLater();
-}
-//! [9]