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-rw-r--r--examples/widgets/tools/settingseditor/settingstree.cpp278
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diff --git a/examples/widgets/tools/settingseditor/settingstree.cpp b/examples/widgets/tools/settingseditor/settingstree.cpp
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--- a/examples/widgets/tools/settingseditor/settingstree.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 "settingstree.h"
-#include "variantdelegate.h"
-
-#include <QApplication>
-#include <QHeaderView>
-#include <QScreen>
-#include <QSettings>
-
-SettingsTree::SettingsTree(QWidget *parent)
- : QTreeWidget(parent),
- m_typeChecker(new TypeChecker)
-{
- setItemDelegate(new VariantDelegate(m_typeChecker, this));
-
- setHeaderLabels({tr("Setting"), tr("Type"), tr("Value")});
- header()->setSectionResizeMode(0, QHeaderView::ResizeToContents);
- header()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
- header()->setSectionResizeMode(2, QHeaderView::Stretch);
-
- refreshTimer.setInterval(2000);
-
- groupIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirClosedIcon),
- QIcon::Normal, QIcon::Off);
- groupIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirOpenIcon),
- QIcon::Normal, QIcon::On);
- keyIcon.addPixmap(style()->standardPixmap(QStyle::SP_FileIcon));
-
- connect(&refreshTimer, &QTimer::timeout, this, &SettingsTree::maybeRefresh);
-}
-
-SettingsTree::~SettingsTree() = default;
-
-void SettingsTree::setSettingsObject(const SettingsPtr &newSettings)
-{
- settings = newSettings;
- clear();
-
- if (settings.isNull()) {
- refreshTimer.stop();
- } else {
- refresh();
- if (autoRefresh)
- refreshTimer.start();
- }
-}
-
-QSize SettingsTree::sizeHint() const
-{
- const QRect availableGeometry = screen()->availableGeometry();
- return QSize(availableGeometry.width() * 2 / 3, availableGeometry.height() * 2 / 3);
-}
-
-void SettingsTree::setAutoRefresh(bool autoRefresh)
-{
- this->autoRefresh = autoRefresh;
- if (!settings.isNull()) {
- if (autoRefresh) {
- maybeRefresh();
- refreshTimer.start();
- } else {
- refreshTimer.stop();
- }
- }
-}
-
-void SettingsTree::setFallbacksEnabled(bool enabled)
-{
- if (!settings.isNull()) {
- settings->setFallbacksEnabled(enabled);
- refresh();
- }
-}
-
-void SettingsTree::maybeRefresh()
-{
- if (state() != EditingState)
- refresh();
-}
-
-void SettingsTree::refresh()
-{
- if (settings.isNull())
- return;
-
- disconnect(this, &QTreeWidget::itemChanged,
- this, &SettingsTree::updateSetting);
-
- settings->sync();
- updateChildItems(nullptr);
-
- connect(this, &QTreeWidget::itemChanged,
- this, &SettingsTree::updateSetting);
-}
-
-bool SettingsTree::event(QEvent *event)
-{
- if (event->type() == QEvent::WindowActivate) {
- if (isActiveWindow() && autoRefresh)
- maybeRefresh();
- }
- return QTreeWidget::event(event);
-}
-
-void SettingsTree::updateSetting(QTreeWidgetItem *item)
-{
- QString key = item->text(0);
- QTreeWidgetItem *ancestor = item->parent();
- while (ancestor) {
- key.prepend(ancestor->text(0) + QLatin1Char('/'));
- ancestor = ancestor->parent();
- }
-
- settings->setValue(key, item->data(2, Qt::UserRole));
- if (autoRefresh)
- refresh();
-}
-
-void SettingsTree::updateChildItems(QTreeWidgetItem *parent)
-{
- int dividerIndex = 0;
-
- const QStringList childGroups = settings->childGroups();
- for (const QString &group : childGroups) {
- QTreeWidgetItem *child;
- int childIndex = findChild(parent, group, dividerIndex);
- if (childIndex != -1) {
- child = childAt(parent, childIndex);
- child->setText(1, QString());
- child->setText(2, QString());
- child->setData(2, Qt::UserRole, QVariant());
- moveItemForward(parent, childIndex, dividerIndex);
- } else {
- child = createItem(group, parent, dividerIndex);
- }
- child->setIcon(0, groupIcon);
- ++dividerIndex;
-
- settings->beginGroup(group);
- updateChildItems(child);
- settings->endGroup();
- }
-
- const QStringList childKeys = settings->childKeys();
- for (const QString &key : childKeys) {
- QTreeWidgetItem *child;
- int childIndex = findChild(parent, key, 0);
-
- if (childIndex == -1 || childIndex >= dividerIndex) {
- if (childIndex != -1) {
- child = childAt(parent, childIndex);
- for (int i = 0; i < child->childCount(); ++i)
- delete childAt(child, i);
- moveItemForward(parent, childIndex, dividerIndex);
- } else {
- child = createItem(key, parent, dividerIndex);
- }
- child->setIcon(0, keyIcon);
- ++dividerIndex;
- } else {
- child = childAt(parent, childIndex);
- }
-
- QVariant value = settings->value(key);
- if (value.userType() == QMetaType::UnknownType) {
- child->setText(1, "Invalid");
- } else {
- if (value.typeId() == QMetaType::QString) {
- const QString stringValue = value.toString();
- if (m_typeChecker->boolExp.match(stringValue).hasMatch()) {
- value.setValue(stringValue.compare("true", Qt::CaseInsensitive) == 0);
- } else if (m_typeChecker->signedIntegerExp.match(stringValue).hasMatch())
- value.setValue(stringValue.toInt());
- }
-
- child->setText(1, value.typeName());
- }
- child->setText(2, VariantDelegate::displayText(value));
- child->setData(2, Qt::UserRole, value);
- }
-
- while (dividerIndex < childCount(parent))
- delete childAt(parent, dividerIndex);
-}
-
-QTreeWidgetItem *SettingsTree::createItem(const QString &text,
- QTreeWidgetItem *parent, int index)
-{
- QTreeWidgetItem *after = nullptr;
- if (index != 0)
- after = childAt(parent, index - 1);
-
- QTreeWidgetItem *item;
- if (parent)
- item = new QTreeWidgetItem(parent, after);
- else
- item = new QTreeWidgetItem(this, after);
-
- item->setText(0, text);
- item->setFlags(item->flags() | Qt::ItemIsEditable);
- return item;
-}
-
-QTreeWidgetItem *SettingsTree::childAt(QTreeWidgetItem *parent, int index) const
-{
- return (parent ? parent->child(index) : topLevelItem(index));
-}
-
-int SettingsTree::childCount(QTreeWidgetItem *parent) const
-{
- return (parent ? parent->childCount() : topLevelItemCount());
-}
-
-int SettingsTree::findChild(QTreeWidgetItem *parent, const QString &text,
- int startIndex) const
-{
- for (int i = startIndex; i < childCount(parent); ++i) {
- if (childAt(parent, i)->text(0) == text)
- return i;
- }
- return -1;
-}
-
-void SettingsTree::moveItemForward(QTreeWidgetItem *parent, int oldIndex,
- int newIndex)
-{
- for (int i = 0; i < oldIndex - newIndex; ++i)
- delete childAt(parent, newIndex);
-}