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qt5base-lts/tests/manual/dialogs/filedialogpanel.cpp
Friedemann Kleint c4314f7aeb Filedialog test: Do not set directory if empty. 
Make it possible to test the saving/restoring of directories
which is done by default.

Task-number: QTBUG-28855
Change-Id: Id16010b6aea9cd78b9bebdbe1b148eb7f5141f8b
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>
2013-02-16 09:04:27 +01:00

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
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****************************************************************************/
#include "filedialogpanel.h"
#include <QGridLayout>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QGridLayout>
#include <QFormLayout>
#include <QSpacerItem>
#include <QGroupBox>
#include <QComboBox>
#include <QPushButton>
#include <QCheckBox>
#include <QLineEdit>
#include <QPlainTextEdit>
#include <QLabel>
#include <QMessageBox>
#include <QApplication>
#include <QTimer>
#include <QDebug>
struct ComboData
{
const char *description;
int value;
};
const ComboData acceptModeComboData[] =
{
{"AcceptOpen", QFileDialog::AcceptOpen },
{"AcceptSave", QFileDialog::AcceptSave }
};
const ComboData viewModeComboData[] =
{
{"Detail", QFileDialog::Detail},
{"List", QFileDialog::List}
};
const ComboData fileModeComboData[] =
{
{"AnyFile", QFileDialog::AnyFile},
{"ExistingFile", QFileDialog::ExistingFile},
{"ExistingFiles", QFileDialog::ExistingFiles},
{"Directory", QFileDialog::Directory},
{"DirectoryOnly", QFileDialog::DirectoryOnly}
};
static QComboBox *createCombo(QWidget *parent, const ComboData *d, size_t size)
{
QComboBox *c = new QComboBox(parent);
for (size_t i = 0; i < size; ++i)
c->addItem(QLatin1String(d[i].description), QVariant(d[i].value));
return c;
}
template <class Enum>
Enum comboBoxValue(const QComboBox *c)
{
return static_cast<Enum>(c->itemData(c->currentIndex()).toInt());
}
inline void setComboBoxValue(QComboBox *c, int v)
{
c->setCurrentIndex(c->findData(QVariant(v)));
}
static inline QPushButton *addButton(const QString &description, QGridLayout *layout,
int &row, int column, QObject *receiver, const char *slotFunc)
{
QPushButton *button = new QPushButton(description);
QObject::connect(button, SIGNAL(clicked()), receiver, slotFunc);
layout->addWidget(button, row++, column);
return button;
}
// A line edit for editing the label fields of the dialog, keeping track of whether it has
// been modified by the user to avoid applying Qt's default texts to native dialogs.
class LabelLineEdit : public QLineEdit
{
Q_OBJECT
public:
explicit LabelLineEdit(QFileDialog::DialogLabel label, QWidget *parent = 0) : QLineEdit(parent), m_label(label), m_dirty(false)
{
connect(this, SIGNAL(textEdited(QString)), this, SLOT(setDirty()));
}
void restoreDefault(const QFileDialog *d)
{
setText(d->labelText(m_label));
m_dirty = false;
}
void apply(QFileDialog *d) const
{
if (m_dirty)
d->setLabelText(m_label, text());
}
private slots:
void setDirty() { m_dirty = true; }
private:
const QFileDialog::DialogLabel m_label;
bool m_dirty;
};
FileDialogPanel::FileDialogPanel(QWidget *parent)
: QWidget(parent)
, m_readOnly(new QCheckBox(tr("Read only")))
, m_confirmOverWrite(new QCheckBox(tr("Confirm overwrite")))
, m_nameFilterDetailsVisible(new QCheckBox(tr("Name filter details visible")))
, m_resolveSymLinks(new QCheckBox(tr("Resolve symlinks")))
, m_native(new QCheckBox(tr("Use native dialog")))
, m_acceptMode(createCombo(this, acceptModeComboData, sizeof(acceptModeComboData)/sizeof(ComboData)))
, m_fileMode(createCombo(this, fileModeComboData, sizeof(fileModeComboData)/sizeof(ComboData)))
, m_viewMode(createCombo(this, viewModeComboData, sizeof(viewModeComboData)/sizeof(ComboData)))
, m_defaultSuffix(new QLineEdit(this))
, m_directory(new QLineEdit(this))
, m_selectedFileName(new QLineEdit(this))
, m_nameFilters(new QPlainTextEdit)
, m_selectedNameFilter(new QLineEdit(this))
, m_deleteNonModalDialogButton(0)
, m_deleteModalDialogButton(0)
{
// Options
QGroupBox *optionsGroupBox = new QGroupBox(tr("Options"));
QFormLayout *optionsLayout = new QFormLayout(optionsGroupBox);
optionsLayout->addRow(tr("AcceptMode:"), m_acceptMode);
optionsLayout->addRow(tr("FileMode:"), m_fileMode);
optionsLayout->addRow(tr("ViewMode:"), m_viewMode);
optionsLayout->addRow(m_native);
optionsLayout->addRow(m_confirmOverWrite);
optionsLayout->addRow(m_nameFilterDetailsVisible);
optionsLayout->addRow(m_resolveSymLinks);
optionsLayout->addRow(m_readOnly);
// Files
QGroupBox *filesGroupBox = new QGroupBox(tr("Files / Filters"));
QFormLayout *filesLayout = new QFormLayout(filesGroupBox);
filesLayout->addRow(tr("Default Suffix:"), m_defaultSuffix);
filesLayout->addRow(tr("Directory:"), m_directory);
filesLayout->addRow(tr("Selected file:"), m_selectedFileName);
m_nameFilters->setMaximumHeight(80);
filesLayout->addRow(tr("Name filters:"), m_nameFilters);
filesLayout->addRow(tr("Selected name filter:"), m_selectedNameFilter);
// Optional labels
QGroupBox *labelsGroupBox = new QGroupBox(tr("Labels"));
QFormLayout *labelsLayout = new QFormLayout(labelsGroupBox);
m_labelLineEdits.push_back(new LabelLineEdit(QFileDialog::LookIn, this));
labelsLayout->addRow(tr("Look in label:"), m_labelLineEdits.back());
m_labelLineEdits.push_back(new LabelLineEdit(QFileDialog::FileName, this));
labelsLayout->addRow(tr("File name label:"), m_labelLineEdits.back());
m_labelLineEdits.push_back(new LabelLineEdit(QFileDialog::FileType, this));
labelsLayout->addRow(tr("File type label:"), m_labelLineEdits.back());
m_labelLineEdits.push_back(new LabelLineEdit(QFileDialog::Accept, this));
labelsLayout->addRow(tr("Accept label:"), m_labelLineEdits.back());
m_labelLineEdits.push_back(new LabelLineEdit(QFileDialog::Reject, this));
labelsLayout->addRow(tr("Reject label:"), m_labelLineEdits.back());
// Buttons
QGroupBox *buttonsGroupBox = new QGroupBox(tr("Show"));
QGridLayout *buttonLayout = new QGridLayout(buttonsGroupBox);
int row = 0;
int column = 0;
addButton(tr("Exec modal"), buttonLayout, row, column, this, SLOT(execModal()));
addButton(tr("Show modal"), buttonLayout, row, column, this, SLOT(showModal()));
m_deleteModalDialogButton =
addButton(tr("Delete modal"), buttonLayout, row, column, this, SLOT(deleteModalDialog()));
addButton(tr("Show non-modal"), buttonLayout, row, column, this, SLOT(showNonModal()));
m_deleteNonModalDialogButton =
addButton(tr("Delete non-modal"), buttonLayout, row, column, this, SLOT(deleteNonModalDialog()));
row = 0;
column++;
addButton(tr("getOpenFileName"), buttonLayout, row, column, this, SLOT(getOpenFileName()));
addButton(tr("getOpenFileNames"), buttonLayout, row, column, this, SLOT(getOpenFileNames()));
addButton(tr("getSaveFileName"), buttonLayout, row, column, this, SLOT(getSaveFileName()));
addButton(tr("getExistingDirectory"), buttonLayout, row, column, this, SLOT(getExistingDirectory()));
addButton(tr("Restore defaults"), buttonLayout, row, column, this, SLOT(restoreDefaults()));
// Main layout
QGridLayout *gridLayout = new QGridLayout(this);
gridLayout->addWidget(optionsGroupBox, 0, 0);
gridLayout->addWidget(filesGroupBox, 0, 1);
gridLayout->addWidget(labelsGroupBox, 1, 0);
gridLayout->addWidget(buttonsGroupBox, 1, 1);
enableDeleteModalDialogButton();
enableDeleteNonModalDialogButton();
restoreDefaults();
}
void FileDialogPanel::execModal()
{
QFileDialog dialog(this);
applySettings(&dialog);
connect(&dialog, SIGNAL(accepted()), this, SLOT(accepted()));
dialog.setWindowTitle(tr("Modal File Dialog Qt %1").arg(QLatin1String(QT_VERSION_STR)));
dialog.exec();
}
void FileDialogPanel::showModal()
{
if (m_modalDialog.isNull()) {
static int n = 0;
m_modalDialog = new QFileDialog(this);
m_modalDialog->setModal(true);
connect(m_modalDialog.data(), SIGNAL(accepted()), this, SLOT(accepted()));
m_modalDialog->setWindowTitle(tr("Modal File Dialog #%1 Qt %2")
.arg(++n)
.arg(QLatin1String(QT_VERSION_STR)));
enableDeleteModalDialogButton();
}
applySettings(m_modalDialog);
m_modalDialog->show();
}
void FileDialogPanel::showNonModal()
{
if (m_nonModalDialog.isNull()) {
static int n = 0;
m_nonModalDialog = new QFileDialog(this);
connect(m_nonModalDialog.data(), SIGNAL(accepted()), this, SLOT(accepted()));
m_nonModalDialog->setWindowTitle(tr("Non-Modal File Dialog #%1 Qt %2")
.arg(++n)
.arg(QLatin1String(QT_VERSION_STR)));
enableDeleteNonModalDialogButton();
}
applySettings(m_nonModalDialog);
m_nonModalDialog->show();
}
void FileDialogPanel::deleteNonModalDialog()
{
if (!m_nonModalDialog.isNull())
delete m_nonModalDialog;
enableDeleteNonModalDialogButton();
}
void FileDialogPanel::deleteModalDialog()
{
if (!m_modalDialog.isNull())
delete m_modalDialog;
enableDeleteModalDialogButton();
}
void FileDialogPanel::enableDeleteNonModalDialogButton()
{
m_deleteNonModalDialogButton->setEnabled(!m_nonModalDialog.isNull());
}
void FileDialogPanel::enableDeleteModalDialogButton()
{
m_deleteModalDialogButton->setEnabled(!m_modalDialog.isNull());
}
QString FileDialogPanel::filterString() const
{
return m_nameFilters->toPlainText().trimmed().replace(QLatin1String("\n"), QLatin1String(";;"));
}
QFileDialog::Options FileDialogPanel::options() const
{
QFileDialog::Options result;
if (!m_nameFilterDetailsVisible->isChecked())
result |= QFileDialog::HideNameFilterDetails;
if (!m_resolveSymLinks->isChecked())
result |= QFileDialog::DontResolveSymlinks;
if (m_readOnly->isChecked())
result |= QFileDialog::ReadOnly;
if (!m_confirmOverWrite->isChecked())
result |= QFileDialog::DontConfirmOverwrite;
if (!m_native->isChecked())
result |= QFileDialog::DontUseNativeDialog;
return result;
}
void FileDialogPanel::getOpenFileNames()
{
QString selectedFilter = m_selectedNameFilter->text().trimmed();
const QStringList files =
QFileDialog::getOpenFileNames(this, tr("getOpenFileNames Qt %1").arg(QLatin1String(QT_VERSION_STR)),
m_directory->text(), filterString(), &selectedFilter, options());
if (!files.isEmpty()) {
QString result;
QDebug(&result).nospace()
<< "Files: " << files
<< "\nName filter: " << selectedFilter;
QMessageBox::information(this, tr("getOpenFileNames"), result, QMessageBox::Ok);
}
}
void FileDialogPanel::getOpenFileName()
{
QString selectedFilter = m_selectedNameFilter->text().trimmed();
const QString file =
QFileDialog::getOpenFileName(this, tr("getOpenFileName Qt %1").arg(QLatin1String(QT_VERSION_STR)),
m_directory->text(), filterString(), &selectedFilter, options());
if (!file.isEmpty()) {
QString result;
QDebug(&result).nospace()
<< "File: " << file
<< "\nName filter: " << selectedFilter;
QMessageBox::information(this, tr("getOpenFileName"), result, QMessageBox::Ok);
}
}
void FileDialogPanel::getSaveFileName()
{
QString selectedFilter = m_selectedNameFilter->text().trimmed();
const QString file =
QFileDialog::getSaveFileName(this, tr("getSaveFileName Qt %1").arg(QLatin1String(QT_VERSION_STR)),
m_directory->text(), filterString(), &selectedFilter, options());
if (!file.isEmpty()) {
QString result;
QDebug(&result).nospace()
<< "File: " << file
<< "\nName filter: " << selectedFilter;
QMessageBox::information(this, tr("getSaveFileNames"), result, QMessageBox::Ok);
}
}
void FileDialogPanel::getExistingDirectory()
{
const QString dir =
QFileDialog::getExistingDirectory(this, tr("getExistingDirectory Qt %1").arg(QLatin1String(QT_VERSION_STR)),
m_directory->text(), options() | QFileDialog::ShowDirsOnly);
if (!dir.isEmpty())
QMessageBox::information(this, tr("getExistingDirectory"), QLatin1String("Directory: ") + dir, QMessageBox::Ok);
}
void FileDialogPanel::restoreDefaults()
{
QFileDialog d;
setComboBoxValue(m_acceptMode, d.acceptMode());
setComboBoxValue(m_fileMode, d.fileMode());
setComboBoxValue(m_viewMode, d.viewMode());
m_confirmOverWrite->setChecked(d.confirmOverwrite());
m_nameFilterDetailsVisible->setChecked(d.isNameFilterDetailsVisible());
m_resolveSymLinks->setChecked(d.resolveSymlinks());
m_readOnly->setChecked(d.isReadOnly());
m_native->setChecked(true);
m_directory->setText(QDir::homePath());
m_defaultSuffix->setText(QLatin1String(".txt"));
m_nameFilters->setPlainText(QLatin1String("Any files (*)\nImage files (*.png *.xpm *.jpg)\nText files (*.txt)"));
m_selectedFileName->setText(QString());
m_selectedNameFilter->setText(QString());
foreach (LabelLineEdit *l, m_labelLineEdits)
l->restoreDefault(&d);
}
void FileDialogPanel::applySettings(QFileDialog *d) const
{
d->setAcceptMode(comboBoxValue<QFileDialog::AcceptMode>(m_acceptMode));
d->setViewMode(comboBoxValue<QFileDialog::ViewMode>(m_viewMode));
d->setFileMode(comboBoxValue<QFileDialog::FileMode>(m_fileMode));
d->setOptions(options());
d->setDefaultSuffix(m_defaultSuffix->text().trimmed());
const QString directory = m_directory->text().trimmed();
if (!directory.isEmpty())
d->setDirectory(directory);
const QString file = m_selectedFileName->text().trimmed();
if (!file.isEmpty())
d->selectFile(file);
d->setNameFilters(m_nameFilters->toPlainText().trimmed().split(QLatin1Char('\n'), QString::SkipEmptyParts));
const QString filter = m_selectedNameFilter->text().trimmed();
if (!filter.isEmpty())
d->selectNameFilter(filter);
foreach (LabelLineEdit *l, m_labelLineEdits)
l->apply(d);
}
void FileDialogPanel::accepted()
{
const QFileDialog *d = qobject_cast<const QFileDialog *>(sender());
Q_ASSERT(d);
m_result.clear();
QDebug(&m_result).nospace()
<< "Files: " << d->selectedFiles()
<< "\nDirectory: " << d->directory().absolutePath()
<< "\nName filter: " << d->selectedNameFilter();
QTimer::singleShot(0, this, SLOT(showAcceptedResult())); // Avoid problems with the closing (modal) dialog as parent.
}
void FileDialogPanel::showAcceptedResult()
{
QMessageBox::information(this, tr("File Dialog Accepted"), m_result, QMessageBox::Ok);
}
#include "filedialogpanel.moc"
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