diff options
Diffstat (limited to 'examples/network/googlesuggest')
| -rw-r--r-- | examples/network/googlesuggest/googlesuggest.cpp | 234 | ||||
| -rw-r--r-- | examples/network/googlesuggest/googlesuggest.h | 81 | ||||
| -rw-r--r-- | examples/network/googlesuggest/googlesuggest.pro | 9 | ||||
| -rw-r--r-- | examples/network/googlesuggest/main.cpp | 51 | ||||
| -rw-r--r-- | examples/network/googlesuggest/searchbox.cpp | 72 | ||||
| -rw-r--r-- | examples/network/googlesuggest/searchbox.h | 65 |
6 files changed, 512 insertions, 0 deletions
diff --git a/examples/network/googlesuggest/googlesuggest.cpp b/examples/network/googlesuggest/googlesuggest.cpp new file mode 100644 index 00000000000..ed9ff6a20e9 --- /dev/null +++ b/examples/network/googlesuggest/googlesuggest.cpp @@ -0,0 +1,234 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation ([email protected]) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation and its Subsidiary(-ies) 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +//! [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] + diff --git a/examples/network/googlesuggest/googlesuggest.h b/examples/network/googlesuggest/googlesuggest.h new file mode 100644 index 00000000000..a5d268a126b --- /dev/null +++ b/examples/network/googlesuggest/googlesuggest.h @@ -0,0 +1,81 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation ([email protected]) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation and its Subsidiary(-ies) 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef GOOGLESUGGEST_H +#define GOOGLESUGGEST_H + +#include <QtGui> +#include <QtNetwork> +#include <QObject> + +QT_BEGIN_NAMESPACE +class QLineEdit; +class QNetworkReply; +class QTimer; +class QTreeWidget; +QT_END_NAMESPACE + +//! [1] +class GSuggestCompletion : public QObject +{ + Q_OBJECT + +public: + GSuggestCompletion(QLineEdit *parent = 0); + ~GSuggestCompletion(); + bool eventFilter(QObject *obj, QEvent *ev); + void showCompletion(const QStringList &choices, const QStringList &hits); + +public slots: + + void doneCompletion(); + void preventSuggest(); + void autoSuggest(); + void handleNetworkData(QNetworkReply *networkReply); + +private: + QLineEdit *editor; + QTreeWidget *popup; + QTimer *timer; + QNetworkAccessManager networkManager; +}; +//! [1] +#endif // GOOGLESUGGEST_H + diff --git a/examples/network/googlesuggest/googlesuggest.pro b/examples/network/googlesuggest/googlesuggest.pro new file mode 100644 index 00000000000..e118dc9c260 --- /dev/null +++ b/examples/network/googlesuggest/googlesuggest.pro @@ -0,0 +1,9 @@ +QT += network +SOURCES = main.cpp searchbox.cpp googlesuggest.cpp +HEADERS = searchbox.h googlesuggest.h + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/network/googlesuggest +sources.files = $$SOURCES $$HEADERS *.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/network/googlesuggest +INSTALLS += target sources diff --git a/examples/network/googlesuggest/main.cpp b/examples/network/googlesuggest/main.cpp new file mode 100644 index 00000000000..f20e8f6c0e7 --- /dev/null +++ b/examples/network/googlesuggest/main.cpp @@ -0,0 +1,51 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation ([email protected]) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation and its Subsidiary(-ies) 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 <QApplication> + +#include "searchbox.h" + +int main(int argc, char * argv[]) +{ + QApplication app(argc, argv); + SearchBox *searchEdit = new SearchBox; + searchEdit->show(); + return app.exec(); +} diff --git a/examples/network/googlesuggest/searchbox.cpp b/examples/network/googlesuggest/searchbox.cpp new file mode 100644 index 00000000000..cf22fd1369b --- /dev/null +++ b/examples/network/googlesuggest/searchbox.cpp @@ -0,0 +1,72 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation ([email protected]) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation and its Subsidiary(-ies) 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 <QDesktopServices> +#include <QUrl> + +#include "searchbox.h" +#include "googlesuggest.h" + +#define GSEARCH_URL "http://www.google.com/search?q=%1" + +//! [1] +SearchBox::SearchBox(QWidget *parent): QLineEdit(parent) +{ + completer = new GSuggestCompletion(this); + + connect(this, SIGNAL(returnPressed()),this, SLOT(doSearch())); + + setWindowTitle("Search with Google"); + + adjustSize(); + resize(400, height()); + setFocus(); +} +//! [1] + +//! [2] +void SearchBox::doSearch() +{ + completer->preventSuggest(); + QString url = QString(GSEARCH_URL).arg(text()); + QDesktopServices::openUrl(QUrl(url)); +} +//! [2] + diff --git a/examples/network/googlesuggest/searchbox.h b/examples/network/googlesuggest/searchbox.h new file mode 100644 index 00000000000..5ffcbc8614a --- /dev/null +++ b/examples/network/googlesuggest/searchbox.h @@ -0,0 +1,65 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation ([email protected]) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation and its Subsidiary(-ies) 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." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef SEARCHBOX_H +#define SEARCHBOX_H + +//! [1] +#include <QLineEdit> + +class GSuggestCompletion; + +class SearchBox: public QLineEdit +{ + Q_OBJECT + +public: + SearchBox(QWidget *parent = 0); + +protected slots: + void doSearch(); + +private: + GSuggestCompletion *completer; +//! [1] +}; + + +#endif // SEARCHBOX_H |