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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#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);
}
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