qt-everywhere-src-5.14.1/qtbase/examples/widgets/dialogs/standarddialogs/dialog.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** 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 <QtWidgets>

 #include "dialog.h"

 #define MESSAGE \
     Dialog::tr("<p>Message boxes have a caption, a text, " \
                "and any number of buttons, each with standard or custom texts." \
                "<p>Click a button to close the message box. Pressing the Esc button " \
                "will activate the detected escape button (if any).")
 #define MESSAGE_DETAILS \
     Dialog::tr("If a message box has detailed text, the user can reveal it " \
                "by pressing the Show Details... button.")


 class DialogOptionsWidget : public QGroupBox
 {
 public:
     explicit DialogOptionsWidget(QWidget *parent = nullptr);

     void addCheckBox(const QString &text, int value);
     void addSpacer();
     int value() const;

 private:
     typedef QPair<QCheckBox *, int> CheckBoxEntry;
     QVBoxLayout *layout;
     QList<CheckBoxEntry> checkBoxEntries;
 };

 DialogOptionsWidget::DialogOptionsWidget(QWidget *parent) :
     QGroupBox(parent) , layout(new QVBoxLayout)
 {
     setTitle(Dialog::tr("Options"));
     setLayout(layout);
 }

 void DialogOptionsWidget::addCheckBox(const QString &text, int value)
 {
     QCheckBox *checkBox = new QCheckBox(text);
     layout->addWidget(checkBox);
     checkBoxEntries.append(CheckBoxEntry(checkBox, value));
 }

 void DialogOptionsWidget::addSpacer()
 {
     layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding));
 }

 int DialogOptionsWidget::value() const
 {
     int result = 0;
     for (const CheckBoxEntry &checkboxEntry : qAsConst(checkBoxEntries)) {
         if (checkboxEntry.first->isChecked())
             result |= checkboxEntry.second;
     }
     return result;
 }

 Dialog::Dialog(QWidget *parent)
     : QWidget(parent)
 {
     QVBoxLayout *verticalLayout;
     if (QGuiApplication::styleHints()->showIsFullScreen() || QGuiApplication::styleHints()->showIsMaximized()) {
         QHBoxLayout *horizontalLayout = new QHBoxLayout(this);
         QGroupBox *groupBox = new QGroupBox(QGuiApplication::applicationDisplayName(), this);
         horizontalLayout->addWidget(groupBox);
         verticalLayout = new QVBoxLayout(groupBox);
     } else {
         verticalLayout = new QVBoxLayout(this);
     }

     QToolBox *toolbox = new QToolBox;
     verticalLayout->addWidget(toolbox);

     errorMessageDialog = new QErrorMessage(this);

     int frameStyle = QFrame::Sunken | QFrame::Panel;

     integerLabel = new QLabel;
     integerLabel->setFrameStyle(frameStyle);
     QPushButton *integerButton =
             new QPushButton(tr("QInputDialog::get&Int()"));

     doubleLabel = new QLabel;
     doubleLabel->setFrameStyle(frameStyle);
     QPushButton *doubleButton =
             new QPushButton(tr("QInputDialog::get&Double()"));

     itemLabel = new QLabel;
     itemLabel->setFrameStyle(frameStyle);
     QPushButton *itemButton = new QPushButton(tr("QInputDialog::getIte&m()"));

     textLabel = new QLabel;
     textLabel->setFrameStyle(frameStyle);
     QPushButton *textButton = new QPushButton(tr("QInputDialog::get&Text()"));

     multiLineTextLabel = new QLabel;
     multiLineTextLabel->setFrameStyle(frameStyle);
     QPushButton *multiLineTextButton = new QPushButton(tr("QInputDialog::get&MultiLineText()"));

     colorLabel = new QLabel;
     colorLabel->setFrameStyle(frameStyle);
     QPushButton *colorButton = new QPushButton(tr("QColorDialog::get&Color()"));

     fontLabel = new QLabel;
     fontLabel->setFrameStyle(frameStyle);
     QPushButton *fontButton = new QPushButton(tr("QFontDialog::get&Font()"));

     directoryLabel = new QLabel;
     directoryLabel->setFrameStyle(frameStyle);
     QPushButton *directoryButton =
             new QPushButton(tr("QFileDialog::getE&xistingDirectory()"));

     openFileNameLabel = new QLabel;
     openFileNameLabel->setFrameStyle(frameStyle);
     QPushButton *openFileNameButton =
             new QPushButton(tr("QFileDialog::get&OpenFileName()"));

     openFileNamesLabel = new QLabel;
     openFileNamesLabel->setFrameStyle(frameStyle);
     QPushButton *openFileNamesButton =
             new QPushButton(tr("QFileDialog::&getOpenFileNames()"));

     saveFileNameLabel = new QLabel;
     saveFileNameLabel->setFrameStyle(frameStyle);
     QPushButton *saveFileNameButton =
             new QPushButton(tr("QFileDialog::get&SaveFileName()"));

     criticalLabel = new QLabel;
     criticalLabel->setFrameStyle(frameStyle);
     QPushButton *criticalButton =
             new QPushButton(tr("QMessageBox::critica&l()"));

     informationLabel = new QLabel;
     informationLabel->setFrameStyle(frameStyle);
     QPushButton *informationButton =
             new QPushButton(tr("QMessageBox::i&nformation()"));

     questionLabel = new QLabel;
     questionLabel->setFrameStyle(frameStyle);
     QPushButton *questionButton =
             new QPushButton(tr("QMessageBox::&question()"));

     warningLabel = new QLabel;
     warningLabel->setFrameStyle(frameStyle);
     QPushButton *warningButton = new QPushButton(tr("QMessageBox::&warning()"));

     errorLabel = new QLabel;
     errorLabel->setFrameStyle(frameStyle);
     QPushButton *errorButton =
             new QPushButton(tr("QErrorMessage::showM&essage()"));

     connect(integerButton, &QAbstractButton::clicked, this, &Dialog::setInteger);
     connect(doubleButton, &QAbstractButton::clicked, this, &Dialog::setDouble);
     connect(itemButton, &QAbstractButton::clicked, this, &Dialog::setItem);
     connect(textButton, &QAbstractButton::clicked, this, &Dialog::setText);
     connect(multiLineTextButton, &QAbstractButton::clicked, this, &Dialog::setMultiLineText);
     connect(colorButton, &QAbstractButton::clicked, this, &Dialog::setColor);
     connect(fontButton, &QAbstractButton::clicked, this, &Dialog::setFont);
     connect(directoryButton, &QAbstractButton::clicked,
             this, &Dialog::setExistingDirectory);
     connect(openFileNameButton, &QAbstractButton::clicked,
             this, &Dialog::setOpenFileName);
     connect(openFileNamesButton, &QAbstractButton::clicked,
             this, &Dialog::setOpenFileNames);
     connect(saveFileNameButton, &QAbstractButton::clicked,
             this, &Dialog::setSaveFileName);
     connect(criticalButton, &QAbstractButton::clicked, this, &Dialog::criticalMessage);
     connect(informationButton, &QAbstractButton::clicked,
             this, &Dialog::informationMessage);
     connect(questionButton, &QAbstractButton::clicked, this, &Dialog::questionMessage);
     connect(warningButton, &QAbstractButton::clicked, this, &Dialog::warningMessage);
     connect(errorButton, &QAbstractButton::clicked, this, &Dialog::errorMessage);

     QWidget *page = new QWidget;
     QGridLayout *layout = new QGridLayout(page);
     layout->setColumnStretch(1, 1);
     layout->setColumnMinimumWidth(1, 250);
     layout->addWidget(integerButton, 0, 0);
     layout->addWidget(integerLabel, 0, 1);
     layout->addWidget(doubleButton, 1, 0);
     layout->addWidget(doubleLabel, 1, 1);
     layout->addWidget(itemButton, 2, 0);
     layout->addWidget(itemLabel, 2, 1);
     layout->addWidget(textButton, 3, 0);
     layout->addWidget(textLabel, 3, 1);
     layout->addWidget(multiLineTextButton, 4, 0);
     layout->addWidget(multiLineTextLabel, 4, 1);
     layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 5, 0);
     toolbox->addItem(page, tr("Input Dialogs"));

     const QString doNotUseNativeDialog = tr("Do not use native dialog");

     page = new QWidget;
     layout = new QGridLayout(page);
     layout->setColumnStretch(1, 1);
     layout->addWidget(colorButton, 0, 0);
     layout->addWidget(colorLabel, 0, 1);
     colorDialogOptionsWidget = new DialogOptionsWidget;
     colorDialogOptionsWidget->addCheckBox(doNotUseNativeDialog, QColorDialog::DontUseNativeDialog);
     colorDialogOptionsWidget->addCheckBox(tr("Show alpha channel") , QColorDialog::ShowAlphaChannel);
     colorDialogOptionsWidget->addCheckBox(tr("No buttons") , QColorDialog::NoButtons);
     layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 1, 0);
     layout->addWidget(colorDialogOptionsWidget, 2, 0, 1 ,2);

     toolbox->addItem(page, tr("Color Dialog"));

     page = new QWidget;
     layout = new QGridLayout(page);
     layout->setColumnStretch(1, 1);
     layout->addWidget(fontButton, 0, 0);
     layout->addWidget(fontLabel, 0, 1);
     fontDialogOptionsWidget = new DialogOptionsWidget;
     fontDialogOptionsWidget->addCheckBox(doNotUseNativeDialog, QFontDialog::DontUseNativeDialog);
     fontDialogOptionsWidget->addCheckBox(tr("Show scalable fonts"), QFontDialog::ScalableFonts);
     fontDialogOptionsWidget->addCheckBox(tr("Show non scalable fonts"), QFontDialog::NonScalableFonts);
     fontDialogOptionsWidget->addCheckBox(tr("Show monospaced fonts"), QFontDialog::MonospacedFonts);
     fontDialogOptionsWidget->addCheckBox(tr("Show proportional fonts"), QFontDialog::ProportionalFonts);
     fontDialogOptionsWidget->addCheckBox(tr("No buttons") , QFontDialog::NoButtons);
     layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 1, 0);
     layout->addWidget(fontDialogOptionsWidget, 2, 0, 1 ,2);
     toolbox->addItem(page, tr("Font Dialog"));

     page = new QWidget;
     layout = new QGridLayout(page);
     layout->setColumnStretch(1, 1);
     layout->addWidget(directoryButton, 0, 0);
     layout->addWidget(directoryLabel, 0, 1);
     layout->addWidget(openFileNameButton, 1, 0);
     layout->addWidget(openFileNameLabel, 1, 1);
     layout->addWidget(openFileNamesButton, 2, 0);
     layout->addWidget(openFileNamesLabel, 2, 1);
     layout->addWidget(saveFileNameButton, 3, 0);
     layout->addWidget(saveFileNameLabel, 3, 1);
     fileDialogOptionsWidget = new DialogOptionsWidget;
     fileDialogOptionsWidget->addCheckBox(doNotUseNativeDialog, QFileDialog::DontUseNativeDialog);
     fileDialogOptionsWidget->addCheckBox(tr("Show directories only"), QFileDialog::ShowDirsOnly);
     fileDialogOptionsWidget->addCheckBox(tr("Do not resolve symlinks"), QFileDialog::DontResolveSymlinks);
     fileDialogOptionsWidget->addCheckBox(tr("Do not confirm overwrite"), QFileDialog::DontConfirmOverwrite);
     fileDialogOptionsWidget->addCheckBox(tr("Readonly"), QFileDialog::ReadOnly);
     fileDialogOptionsWidget->addCheckBox(tr("Hide name filter details"), QFileDialog::HideNameFilterDetails);
     fileDialogOptionsWidget->addCheckBox(tr("Do not use custom directory icons (Windows)"), QFileDialog::DontUseCustomDirectoryIcons);
     layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 4, 0);
     layout->addWidget(fileDialogOptionsWidget, 5, 0, 1 ,2);
     toolbox->addItem(page, tr("File Dialogs"));

     page = new QWidget;
     layout = new QGridLayout(page);
     layout->setColumnStretch(1, 1);
     layout->addWidget(criticalButton, 0, 0);
     layout->addWidget(criticalLabel, 0, 1);
     layout->addWidget(informationButton, 1, 0);
     layout->addWidget(informationLabel, 1, 1);
     layout->addWidget(questionButton, 2, 0);
     layout->addWidget(questionLabel, 2, 1);
     layout->addWidget(warningButton, 3, 0);
     layout->addWidget(warningLabel, 3, 1);
     layout->addWidget(errorButton, 4, 0);
     layout->addWidget(errorLabel, 4, 1);
     layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 5, 0);
     toolbox->addItem(page, tr("Message Boxes"));

     setWindowTitle(QGuiApplication::applicationDisplayName());
 }

 void Dialog::setInteger()
 {
 //! [0]
     bool ok;
     int i = QInputDialog::getInt(this, tr("QInputDialog::getInt()"),
                                  tr("Percentage:"), 25, 0, 100, 1, &ok);
     if (ok)
         integerLabel->setText(tr("%1%").arg(i));
 //! [0]
 }

 void Dialog::setDouble()
 {
 //! [1]
     bool ok;
     double d = QInputDialog::getDouble(this, tr("QInputDialog::getDouble()"),
                                        tr("Amount:"), 37.56, -10000, 10000, 2, &ok);
     if (ok)
         doubleLabel->setText(QString("$%1").arg(d));
 //! [1]
 }

 void Dialog::setItem()
 {
 //! [2]
     QStringList items;
     items << tr("Spring") << tr("Summer") << tr("Fall") << tr("Winter");

     bool ok;
     QString item = QInputDialog::getItem(this, tr("QInputDialog::getItem()"),
                                          tr("Season:"), items, 0, false, &ok);
     if (ok && !item.isEmpty())
         itemLabel->setText(item);
 //! [2]
 }

 void Dialog::setText()
 {
 //! [3]
     bool ok;
     QString text = QInputDialog::getText(this, tr("QInputDialog::getText()"),
                                          tr("User name:"), QLineEdit::Normal,
                                          QDir::home().dirName(), &ok);
     if (ok && !text.isEmpty())
         textLabel->setText(text);
 //! [3]
 }

 void Dialog::setMultiLineText()
 {
 //! [4]
     bool ok;
     QString text = QInputDialog::getMultiLineText(this, tr("QInputDialog::getMultiLineText()"),
                                                   tr("Address:"), "John Doe\nFreedom Street", &ok);
     if (ok && !text.isEmpty())
         multiLineTextLabel->setText(text);
 //! [4]
 }

 void Dialog::setColor()
 {
     const QColorDialog::ColorDialogOptions options = QFlag(colorDialogOptionsWidget->value());
     const QColor color = QColorDialog::getColor(Qt::green, this, "Select Color", options);

     if (color.isValid()) {
         colorLabel->setText(color.name());
         colorLabel->setPalette(QPalette(color));
         colorLabel->setAutoFillBackground(true);
     }
 }

 void Dialog::setFont()
 {
     const QFontDialog::FontDialogOptions options = QFlag(fontDialogOptionsWidget->value());
     bool ok;
     QFont font = QFontDialog::getFont(&ok, QFont(fontLabel->text()), this, "Select Font", options);
     if (ok) {
         fontLabel->setText(font.key());
         fontLabel->setFont(font);
     }
 }

 void Dialog::setExistingDirectory()
 {
     QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
     options |= QFileDialog::DontResolveSymlinks | QFileDialog::ShowDirsOnly;
     QString directory = QFileDialog::getExistingDirectory(this,
                                 tr("QFileDialog::getExistingDirectory()"),
                                 directoryLabel->text(),
                                 options);
     if (!directory.isEmpty())
         directoryLabel->setText(directory);
 }

 void Dialog::setOpenFileName()
 {
     const QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
     QString selectedFilter;
     QString fileName = QFileDialog::getOpenFileName(this,
                                 tr("QFileDialog::getOpenFileName()"),
                                 openFileNameLabel->text(),
                                 tr("All Files (*);;Text Files (*.txt)"),
                                 &selectedFilter,
                                 options);
     if (!fileName.isEmpty())
         openFileNameLabel->setText(fileName);
 }

 void Dialog::setOpenFileNames()
 {
     const QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
     QString selectedFilter;
     QStringList files = QFileDialog::getOpenFileNames(
                                 this, tr("QFileDialog::getOpenFileNames()"),
                                 openFilesPath,
                                 tr("All Files (*);;Text Files (*.txt)"),
                                 &selectedFilter,
                                 options);
     if (files.count()) {
         openFilesPath = files[0];
         openFileNamesLabel->setText(QString("[%1]").arg(files.join(", ")));
     }
 }

 void Dialog::setSaveFileName()
 {
     const QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
     QString selectedFilter;
     QString fileName = QFileDialog::getSaveFileName(this,
                                 tr("QFileDialog::getSaveFileName()"),
                                 saveFileNameLabel->text(),
                                 tr("All Files (*);;Text Files (*.txt)"),
                                 &selectedFilter,
                                 options);
     if (!fileName.isEmpty())
         saveFileNameLabel->setText(fileName);
 }

 void Dialog::criticalMessage()
 {
     QMessageBox::StandardButton reply;
     reply = QMessageBox::critical(this, tr("QMessageBox::critical()"),
                                     MESSAGE,
                                     QMessageBox::Abort | QMessageBox::Retry | QMessageBox::Ignore);
     if (reply == QMessageBox::Abort)
         criticalLabel->setText(tr("Abort"));
     else if (reply == QMessageBox::Retry)
         criticalLabel->setText(tr("Retry"));
     else
         criticalLabel->setText(tr("Ignore"));
 }

 void Dialog::informationMessage()
 {
     QMessageBox::StandardButton reply;
     reply = QMessageBox::information(this, tr("QMessageBox::information()"), MESSAGE);
     if (reply == QMessageBox::Ok)
         informationLabel->setText(tr("OK"));
     else
         informationLabel->setText(tr("Escape"));
 }

 void Dialog::questionMessage()
 {
     QMessageBox::StandardButton reply;
     reply = QMessageBox::question(this, tr("QMessageBox::question()"),
                                     MESSAGE,
                                     QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel);
     if (reply == QMessageBox::Yes)
         questionLabel->setText(tr("Yes"));
     else if (reply == QMessageBox::No)
         questionLabel->setText(tr("No"));
     else
         questionLabel->setText(tr("Cancel"));
 }

 void Dialog::warningMessage()
 {
     QMessageBox msgBox(QMessageBox::Warning, tr("QMessageBox::warning()"),
                        MESSAGE, nullptr, this);
     msgBox.setDetailedText(MESSAGE_DETAILS);
     msgBox.addButton(tr("Save &Again"), QMessageBox::AcceptRole);
     msgBox.addButton(tr("&Continue"), QMessageBox::RejectRole);
     if (msgBox.exec() == QMessageBox::AcceptRole)
         warningLabel->setText(tr("Save Again"));
     else
         warningLabel->setText(tr("Continue"));

 }

 void Dialog::errorMessage()
 {
     errorMessageDialog->showMessage(
             tr("This dialog shows and remembers error messages. "
                "If the checkbox is checked (as it is by default), "
                "the shown message will be shown again, "
                "but if the user unchecks the box the message "
                "will not appear again if QErrorMessage::showMessage() "
                "is called with the same message."));
     errorLabel->setText(tr("If the box is unchecked, the message "
                            "won't appear again."));
 }
	/****************************************************************************
	**
	** 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 <QtWidgets>

	#include "dialog.h"

	#define MESSAGE \
	Dialog::tr("<p>Message boxes have a caption, a text, " \
	"and any number of buttons, each with standard or custom texts." \
	"<p>Click a button to close the message box. Pressing the Esc button " \
	"will activate the detected escape button (if any).")
	#define MESSAGE_DETAILS \
	Dialog::tr("If a message box has detailed text, the user can reveal it " \
	"by pressing the Show Details... button.")


	class DialogOptionsWidget : public QGroupBox
	{
	public:
	explicit DialogOptionsWidget(QWidget *parent = nullptr);

	void addCheckBox(const QString &text, int value);
	void addSpacer();
	int value() const;

	private:
	typedef QPair<QCheckBox *, int> CheckBoxEntry;
	QVBoxLayout *layout;
	QList<CheckBoxEntry> checkBoxEntries;
	};

	DialogOptionsWidget::DialogOptionsWidget(QWidget *parent) :
	QGroupBox(parent) , layout(new QVBoxLayout)
	{
	setTitle(Dialog::tr("Options"));
	setLayout(layout);
	}

	void DialogOptionsWidget::addCheckBox(const QString &text, int value)
	{
	QCheckBox *checkBox = new QCheckBox(text);
	layout->addWidget(checkBox);
	checkBoxEntries.append(CheckBoxEntry(checkBox, value));
	}

	void DialogOptionsWidget::addSpacer()
	{
	layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding));
	}

	int DialogOptionsWidget::value() const
	{
	int result = 0;
	for (const CheckBoxEntry &checkboxEntry : qAsConst(checkBoxEntries)) {
	if (checkboxEntry.first->isChecked())
	result \|= checkboxEntry.second;
	}
	return result;
	}

	Dialog::Dialog(QWidget *parent)
	: QWidget(parent)
	{
	QVBoxLayout *verticalLayout;
	if (QGuiApplication::styleHints()->showIsFullScreen() \|\| QGuiApplication::styleHints()->showIsMaximized()) {
	QHBoxLayout *horizontalLayout = new QHBoxLayout(this);
	QGroupBox *groupBox = new QGroupBox(QGuiApplication::applicationDisplayName(), this);
	horizontalLayout->addWidget(groupBox);
	verticalLayout = new QVBoxLayout(groupBox);
	} else {
	verticalLayout = new QVBoxLayout(this);
	}

	QToolBox *toolbox = new QToolBox;
	verticalLayout->addWidget(toolbox);

	errorMessageDialog = new QErrorMessage(this);

	int frameStyle = QFrame::Sunken \| QFrame::Panel;

	integerLabel = new QLabel;
	integerLabel->setFrameStyle(frameStyle);
	QPushButton *integerButton =
	new QPushButton(tr("QInputDialog::get&Int()"));

	doubleLabel = new QLabel;
	doubleLabel->setFrameStyle(frameStyle);
	QPushButton *doubleButton =
	new QPushButton(tr("QInputDialog::get&Double()"));

	itemLabel = new QLabel;
	itemLabel->setFrameStyle(frameStyle);
	QPushButton *itemButton = new QPushButton(tr("QInputDialog::getIte&m()"));

	textLabel = new QLabel;
	textLabel->setFrameStyle(frameStyle);
	QPushButton *textButton = new QPushButton(tr("QInputDialog::get&Text()"));

	multiLineTextLabel = new QLabel;
	multiLineTextLabel->setFrameStyle(frameStyle);
	QPushButton *multiLineTextButton = new QPushButton(tr("QInputDialog::get&MultiLineText()"));

	colorLabel = new QLabel;
	colorLabel->setFrameStyle(frameStyle);
	QPushButton *colorButton = new QPushButton(tr("QColorDialog::get&Color()"));

	fontLabel = new QLabel;
	fontLabel->setFrameStyle(frameStyle);
	QPushButton *fontButton = new QPushButton(tr("QFontDialog::get&Font()"));

	directoryLabel = new QLabel;
	directoryLabel->setFrameStyle(frameStyle);
	QPushButton *directoryButton =
	new QPushButton(tr("QFileDialog::getE&xistingDirectory()"));

	openFileNameLabel = new QLabel;
	openFileNameLabel->setFrameStyle(frameStyle);
	QPushButton *openFileNameButton =
	new QPushButton(tr("QFileDialog::get&OpenFileName()"));

	openFileNamesLabel = new QLabel;
	openFileNamesLabel->setFrameStyle(frameStyle);
	QPushButton *openFileNamesButton =
	new QPushButton(tr("QFileDialog::&getOpenFileNames()"));

	saveFileNameLabel = new QLabel;
	saveFileNameLabel->setFrameStyle(frameStyle);
	QPushButton *saveFileNameButton =
	new QPushButton(tr("QFileDialog::get&SaveFileName()"));

	criticalLabel = new QLabel;
	criticalLabel->setFrameStyle(frameStyle);
	QPushButton *criticalButton =
	new QPushButton(tr("QMessageBox::critica&l()"));

	informationLabel = new QLabel;
	informationLabel->setFrameStyle(frameStyle);
	QPushButton *informationButton =
	new QPushButton(tr("QMessageBox::i&nformation()"));

	questionLabel = new QLabel;
	questionLabel->setFrameStyle(frameStyle);
	QPushButton *questionButton =
	new QPushButton(tr("QMessageBox::&question()"));

	warningLabel = new QLabel;
	warningLabel->setFrameStyle(frameStyle);
	QPushButton *warningButton = new QPushButton(tr("QMessageBox::&warning()"));

	errorLabel = new QLabel;
	errorLabel->setFrameStyle(frameStyle);
	QPushButton *errorButton =
	new QPushButton(tr("QErrorMessage::showM&essage()"));

	connect(integerButton, &QAbstractButton::clicked, this, &Dialog::setInteger);
	connect(doubleButton, &QAbstractButton::clicked, this, &Dialog::setDouble);
	connect(itemButton, &QAbstractButton::clicked, this, &Dialog::setItem);
	connect(textButton, &QAbstractButton::clicked, this, &Dialog::setText);
	connect(multiLineTextButton, &QAbstractButton::clicked, this, &Dialog::setMultiLineText);
	connect(colorButton, &QAbstractButton::clicked, this, &Dialog::setColor);
	connect(fontButton, &QAbstractButton::clicked, this, &Dialog::setFont);
	connect(directoryButton, &QAbstractButton::clicked,
	this, &Dialog::setExistingDirectory);
	connect(openFileNameButton, &QAbstractButton::clicked,
	this, &Dialog::setOpenFileName);
	connect(openFileNamesButton, &QAbstractButton::clicked,
	this, &Dialog::setOpenFileNames);
	connect(saveFileNameButton, &QAbstractButton::clicked,
	this, &Dialog::setSaveFileName);
	connect(criticalButton, &QAbstractButton::clicked, this, &Dialog::criticalMessage);
	connect(informationButton, &QAbstractButton::clicked,
	this, &Dialog::informationMessage);
	connect(questionButton, &QAbstractButton::clicked, this, &Dialog::questionMessage);
	connect(warningButton, &QAbstractButton::clicked, this, &Dialog::warningMessage);
	connect(errorButton, &QAbstractButton::clicked, this, &Dialog::errorMessage);

	QWidget *page = new QWidget;
	QGridLayout *layout = new QGridLayout(page);
	layout->setColumnStretch(1, 1);
	layout->setColumnMinimumWidth(1, 250);
	layout->addWidget(integerButton, 0, 0);
	layout->addWidget(integerLabel, 0, 1);
	layout->addWidget(doubleButton, 1, 0);
	layout->addWidget(doubleLabel, 1, 1);
	layout->addWidget(itemButton, 2, 0);
	layout->addWidget(itemLabel, 2, 1);
	layout->addWidget(textButton, 3, 0);
	layout->addWidget(textLabel, 3, 1);
	layout->addWidget(multiLineTextButton, 4, 0);
	layout->addWidget(multiLineTextLabel, 4, 1);
	layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 5, 0);
	toolbox->addItem(page, tr("Input Dialogs"));

	const QString doNotUseNativeDialog = tr("Do not use native dialog");

	page = new QWidget;
	layout = new QGridLayout(page);
	layout->setColumnStretch(1, 1);
	layout->addWidget(colorButton, 0, 0);
	layout->addWidget(colorLabel, 0, 1);
	colorDialogOptionsWidget = new DialogOptionsWidget;
	colorDialogOptionsWidget->addCheckBox(doNotUseNativeDialog, QColorDialog::DontUseNativeDialog);
	colorDialogOptionsWidget->addCheckBox(tr("Show alpha channel") , QColorDialog::ShowAlphaChannel);
	colorDialogOptionsWidget->addCheckBox(tr("No buttons") , QColorDialog::NoButtons);
	layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 1, 0);
	layout->addWidget(colorDialogOptionsWidget, 2, 0, 1 ,2);

	toolbox->addItem(page, tr("Color Dialog"));

	page = new QWidget;
	layout = new QGridLayout(page);
	layout->setColumnStretch(1, 1);
	layout->addWidget(fontButton, 0, 0);
	layout->addWidget(fontLabel, 0, 1);
	fontDialogOptionsWidget = new DialogOptionsWidget;
	fontDialogOptionsWidget->addCheckBox(doNotUseNativeDialog, QFontDialog::DontUseNativeDialog);
	fontDialogOptionsWidget->addCheckBox(tr("Show scalable fonts"), QFontDialog::ScalableFonts);
	fontDialogOptionsWidget->addCheckBox(tr("Show non scalable fonts"), QFontDialog::NonScalableFonts);
	fontDialogOptionsWidget->addCheckBox(tr("Show monospaced fonts"), QFontDialog::MonospacedFonts);
	fontDialogOptionsWidget->addCheckBox(tr("Show proportional fonts"), QFontDialog::ProportionalFonts);
	fontDialogOptionsWidget->addCheckBox(tr("No buttons") , QFontDialog::NoButtons);
	layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 1, 0);
	layout->addWidget(fontDialogOptionsWidget, 2, 0, 1 ,2);
	toolbox->addItem(page, tr("Font Dialog"));

	page = new QWidget;
	layout = new QGridLayout(page);
	layout->setColumnStretch(1, 1);
	layout->addWidget(directoryButton, 0, 0);
	layout->addWidget(directoryLabel, 0, 1);
	layout->addWidget(openFileNameButton, 1, 0);
	layout->addWidget(openFileNameLabel, 1, 1);
	layout->addWidget(openFileNamesButton, 2, 0);
	layout->addWidget(openFileNamesLabel, 2, 1);
	layout->addWidget(saveFileNameButton, 3, 0);
	layout->addWidget(saveFileNameLabel, 3, 1);
	fileDialogOptionsWidget = new DialogOptionsWidget;
	fileDialogOptionsWidget->addCheckBox(doNotUseNativeDialog, QFileDialog::DontUseNativeDialog);
	fileDialogOptionsWidget->addCheckBox(tr("Show directories only"), QFileDialog::ShowDirsOnly);
	fileDialogOptionsWidget->addCheckBox(tr("Do not resolve symlinks"), QFileDialog::DontResolveSymlinks);
	fileDialogOptionsWidget->addCheckBox(tr("Do not confirm overwrite"), QFileDialog::DontConfirmOverwrite);
	fileDialogOptionsWidget->addCheckBox(tr("Readonly"), QFileDialog::ReadOnly);
	fileDialogOptionsWidget->addCheckBox(tr("Hide name filter details"), QFileDialog::HideNameFilterDetails);
	fileDialogOptionsWidget->addCheckBox(tr("Do not use custom directory icons (Windows)"), QFileDialog::DontUseCustomDirectoryIcons);
	layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 4, 0);
	layout->addWidget(fileDialogOptionsWidget, 5, 0, 1 ,2);
	toolbox->addItem(page, tr("File Dialogs"));

	page = new QWidget;
	layout = new QGridLayout(page);
	layout->setColumnStretch(1, 1);
	layout->addWidget(criticalButton, 0, 0);
	layout->addWidget(criticalLabel, 0, 1);
	layout->addWidget(informationButton, 1, 0);
	layout->addWidget(informationLabel, 1, 1);
	layout->addWidget(questionButton, 2, 0);
	layout->addWidget(questionLabel, 2, 1);
	layout->addWidget(warningButton, 3, 0);
	layout->addWidget(warningLabel, 3, 1);
	layout->addWidget(errorButton, 4, 0);
	layout->addWidget(errorLabel, 4, 1);
	layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding), 5, 0);
	toolbox->addItem(page, tr("Message Boxes"));

	setWindowTitle(QGuiApplication::applicationDisplayName());
	}

	void Dialog::setInteger()
	{
	//! [0]
	bool ok;
	int i = QInputDialog::getInt(this, tr("QInputDialog::getInt()"),
	tr("Percentage:"), 25, 0, 100, 1, &ok);
	if (ok)
	integerLabel->setText(tr("%1%").arg(i));
	//! [0]
	}

	void Dialog::setDouble()
	{
	//! [1]
	bool ok;
	double d = QInputDialog::getDouble(this, tr("QInputDialog::getDouble()"),
	tr("Amount:"), 37.56, -10000, 10000, 2, &ok);
	if (ok)
	doubleLabel->setText(QString("$%1").arg(d));
	//! [1]
	}

	void Dialog::setItem()
	{
	//! [2]
	QStringList items;
	items << tr("Spring") << tr("Summer") << tr("Fall") << tr("Winter");

	bool ok;
	QString item = QInputDialog::getItem(this, tr("QInputDialog::getItem()"),
	tr("Season:"), items, 0, false, &ok);
	if (ok && !item.isEmpty())
	itemLabel->setText(item);
	//! [2]
	}

	void Dialog::setText()
	{
	//! [3]
	bool ok;
	QString text = QInputDialog::getText(this, tr("QInputDialog::getText()"),
	tr("User name:"), QLineEdit::Normal,
	QDir::home().dirName(), &ok);
	if (ok && !text.isEmpty())
	textLabel->setText(text);
	//! [3]
	}

	void Dialog::setMultiLineText()
	{
	//! [4]
	bool ok;
	QString text = QInputDialog::getMultiLineText(this, tr("QInputDialog::getMultiLineText()"),
	tr("Address:"), "John Doe\nFreedom Street", &ok);
	if (ok && !text.isEmpty())
	multiLineTextLabel->setText(text);
	//! [4]
	}

	void Dialog::setColor()
	{
	const QColorDialog::ColorDialogOptions options = QFlag(colorDialogOptionsWidget->value());
	const QColor color = QColorDialog::getColor(Qt::green, this, "Select Color", options);

	if (color.isValid()) {
	colorLabel->setText(color.name());
	colorLabel->setPalette(QPalette(color));
	colorLabel->setAutoFillBackground(true);
	}
	}

	void Dialog::setFont()
	{
	const QFontDialog::FontDialogOptions options = QFlag(fontDialogOptionsWidget->value());
	bool ok;
	QFont font = QFontDialog::getFont(&ok, QFont(fontLabel->text()), this, "Select Font", options);
	if (ok) {
	fontLabel->setText(font.key());
	fontLabel->setFont(font);
	}
	}

	void Dialog::setExistingDirectory()
	{
	QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
	options \|= QFileDialog::DontResolveSymlinks \| QFileDialog::ShowDirsOnly;
	QString directory = QFileDialog::getExistingDirectory(this,
	tr("QFileDialog::getExistingDirectory()"),
	directoryLabel->text(),
	options);
	if (!directory.isEmpty())
	directoryLabel->setText(directory);
	}

	void Dialog::setOpenFileName()
	{
	const QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
	QString selectedFilter;
	QString fileName = QFileDialog::getOpenFileName(this,
	tr("QFileDialog::getOpenFileName()"),
	openFileNameLabel->text(),
	tr("All Files ();;Text Files (.txt)"),
	&selectedFilter,
	options);
	if (!fileName.isEmpty())
	openFileNameLabel->setText(fileName);
	}

	void Dialog::setOpenFileNames()
	{
	const QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
	QString selectedFilter;
	QStringList files = QFileDialog::getOpenFileNames(
	this, tr("QFileDialog::getOpenFileNames()"),
	openFilesPath,
	tr("All Files ();;Text Files (.txt)"),
	&selectedFilter,
	options);
	if (files.count()) {
	openFilesPath = files[0];
	openFileNamesLabel->setText(QString("[%1]").arg(files.join(", ")));
	}
	}

	void Dialog::setSaveFileName()
	{
	const QFileDialog::Options options = QFlag(fileDialogOptionsWidget->value());
	QString selectedFilter;
	QString fileName = QFileDialog::getSaveFileName(this,
	tr("QFileDialog::getSaveFileName()"),
	saveFileNameLabel->text(),
	tr("All Files ();;Text Files (.txt)"),
	&selectedFilter,
	options);
	if (!fileName.isEmpty())
	saveFileNameLabel->setText(fileName);
	}

	void Dialog::criticalMessage()
	{
	QMessageBox::StandardButton reply;
	reply = QMessageBox::critical(this, tr("QMessageBox::critical()"),
	MESSAGE,
	QMessageBox::Abort \| QMessageBox::Retry \| QMessageBox::Ignore);
	if (reply == QMessageBox::Abort)
	criticalLabel->setText(tr("Abort"));
	else if (reply == QMessageBox::Retry)
	criticalLabel->setText(tr("Retry"));
	else
	criticalLabel->setText(tr("Ignore"));
	}

	void Dialog::informationMessage()
	{
	QMessageBox::StandardButton reply;
	reply = QMessageBox::information(this, tr("QMessageBox::information()"), MESSAGE);
	if (reply == QMessageBox::Ok)
	informationLabel->setText(tr("OK"));
	else
	informationLabel->setText(tr("Escape"));
	}

	void Dialog::questionMessage()
	{
	QMessageBox::StandardButton reply;
	reply = QMessageBox::question(this, tr("QMessageBox::question()"),
	MESSAGE,
	QMessageBox::Yes \| QMessageBox::No \| QMessageBox::Cancel);
	if (reply == QMessageBox::Yes)
	questionLabel->setText(tr("Yes"));
	else if (reply == QMessageBox::No)
	questionLabel->setText(tr("No"));
	else
	questionLabel->setText(tr("Cancel"));
	}

	void Dialog::warningMessage()
	{
	QMessageBox msgBox(QMessageBox::Warning, tr("QMessageBox::warning()"),
	MESSAGE, nullptr, this);
	msgBox.setDetailedText(MESSAGE_DETAILS);
	msgBox.addButton(tr("Save &Again"), QMessageBox::AcceptRole);
	msgBox.addButton(tr("&Continue"), QMessageBox::RejectRole);
	if (msgBox.exec() == QMessageBox::AcceptRole)
	warningLabel->setText(tr("Save Again"));
	else
	warningLabel->setText(tr("Continue"));

	}

	void Dialog::errorMessage()
	{
	errorMessageDialog->showMessage(
	tr("This dialog shows and remembers error messages. "
	"If the checkbox is checked (as it is by default), "
	"the shown message will be shown again, "
	"but if the user unchecks the box the message "
	"will not appear again if QErrorMessage::showMessage() "
	"is called with the same message."));
	errorLabel->setText(tr("If the box is unchecked, the message "
	"won't appear again."));
	}