cd46a2daf5
Update files using old header.LGPL3 to header.LGPL Update files using old FDL template to use new one Update files using old BSD template to use new one Change-Id: I36a78272516f9953d02956522f285b40adfc8915 Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
276 lines
8.4 KiB
C++
276 lines
8.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include "settingstree.h"
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#include "variantdelegate.h"
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SettingsTree::SettingsTree(QWidget *parent)
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: QTreeWidget(parent)
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, autoRefresh(false)
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{
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setItemDelegate(new VariantDelegate(this));
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QStringList labels;
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labels << tr("Setting") << tr("Type") << tr("Value");
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setHeaderLabels(labels);
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header()->setSectionResizeMode(0, QHeaderView::ResizeToContents);
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header()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
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header()->setSectionResizeMode(2, QHeaderView::Stretch);
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refreshTimer.setInterval(2000);
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groupIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirClosedIcon),
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QIcon::Normal, QIcon::Off);
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groupIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirOpenIcon),
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QIcon::Normal, QIcon::On);
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keyIcon.addPixmap(style()->standardPixmap(QStyle::SP_FileIcon));
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connect(&refreshTimer, &QTimer::timeout, this, &SettingsTree::maybeRefresh);
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}
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SettingsTree::~SettingsTree()
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{
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}
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void SettingsTree::setSettingsObject(const SettingsPtr &newSettings)
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{
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settings = newSettings;
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clear();
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if (settings.isNull()) {
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refreshTimer.stop();
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} else {
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refresh();
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if (autoRefresh)
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refreshTimer.start();
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}
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}
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QSize SettingsTree::sizeHint() const
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{
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const QRect availableGeometry = QApplication::desktop()->availableGeometry(this);
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return QSize(availableGeometry.width() * 2 / 3, availableGeometry.height() * 2 / 3);
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}
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void SettingsTree::setAutoRefresh(bool autoRefresh)
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{
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this->autoRefresh = autoRefresh;
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if (!settings.isNull()) {
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if (autoRefresh) {
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maybeRefresh();
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refreshTimer.start();
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} else {
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refreshTimer.stop();
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}
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}
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}
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void SettingsTree::setFallbacksEnabled(bool enabled)
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{
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if (!settings.isNull()) {
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settings->setFallbacksEnabled(enabled);
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refresh();
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}
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}
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void SettingsTree::maybeRefresh()
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{
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if (state() != EditingState)
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refresh();
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}
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void SettingsTree::refresh()
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{
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if (settings.isNull())
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return;
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disconnect(this, &QTreeWidget::itemChanged,
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this, &SettingsTree::updateSetting);
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settings->sync();
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updateChildItems(0);
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connect(this, &QTreeWidget::itemChanged,
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this, &SettingsTree::updateSetting);
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}
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bool SettingsTree::event(QEvent *event)
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{
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if (event->type() == QEvent::WindowActivate) {
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if (isActiveWindow() && autoRefresh)
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maybeRefresh();
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}
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return QTreeWidget::event(event);
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}
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void SettingsTree::updateSetting(QTreeWidgetItem *item)
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{
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QString key = item->text(0);
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QTreeWidgetItem *ancestor = item->parent();
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while (ancestor) {
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key.prepend(ancestor->text(0) + QLatin1Char('/'));
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ancestor = ancestor->parent();
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}
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settings->setValue(key, item->data(2, Qt::UserRole));
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if (autoRefresh)
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refresh();
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}
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void SettingsTree::updateChildItems(QTreeWidgetItem *parent)
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{
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int dividerIndex = 0;
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foreach (QString group, settings->childGroups()) {
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QTreeWidgetItem *child;
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int childIndex = findChild(parent, group, dividerIndex);
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if (childIndex != -1) {
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child = childAt(parent, childIndex);
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child->setText(1, QString());
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child->setText(2, QString());
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child->setData(2, Qt::UserRole, QVariant());
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moveItemForward(parent, childIndex, dividerIndex);
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} else {
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child = createItem(group, parent, dividerIndex);
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}
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child->setIcon(0, groupIcon);
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++dividerIndex;
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settings->beginGroup(group);
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updateChildItems(child);
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settings->endGroup();
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}
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foreach (const QString &key, settings->childKeys()) {
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QTreeWidgetItem *child;
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int childIndex = findChild(parent, key, 0);
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if (childIndex == -1 || childIndex >= dividerIndex) {
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if (childIndex != -1) {
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child = childAt(parent, childIndex);
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for (int i = 0; i < child->childCount(); ++i)
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delete childAt(child, i);
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moveItemForward(parent, childIndex, dividerIndex);
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} else {
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child = createItem(key, parent, dividerIndex);
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}
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child->setIcon(0, keyIcon);
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++dividerIndex;
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} else {
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child = childAt(parent, childIndex);
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}
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QVariant value = settings->value(key);
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if (value.type() == QVariant::Invalid) {
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child->setText(1, "Invalid");
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} else {
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child->setText(1, value.typeName());
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}
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child->setText(2, VariantDelegate::displayText(value));
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child->setData(2, Qt::UserRole, value);
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}
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while (dividerIndex < childCount(parent))
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delete childAt(parent, dividerIndex);
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}
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QTreeWidgetItem *SettingsTree::createItem(const QString &text,
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QTreeWidgetItem *parent, int index)
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{
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QTreeWidgetItem *after = 0;
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if (index != 0)
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after = childAt(parent, index - 1);
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QTreeWidgetItem *item;
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if (parent)
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item = new QTreeWidgetItem(parent, after);
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else
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item = new QTreeWidgetItem(this, after);
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item->setText(0, text);
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item->setFlags(item->flags() | Qt::ItemIsEditable);
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return item;
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}
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QTreeWidgetItem *SettingsTree::childAt(QTreeWidgetItem *parent, int index)
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{
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if (parent)
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return parent->child(index);
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else
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return topLevelItem(index);
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}
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int SettingsTree::childCount(QTreeWidgetItem *parent)
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{
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if (parent)
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return parent->childCount();
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else
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return topLevelItemCount();
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}
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int SettingsTree::findChild(QTreeWidgetItem *parent, const QString &text,
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int startIndex)
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{
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for (int i = startIndex; i < childCount(parent); ++i) {
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if (childAt(parent, i)->text(0) == text)
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return i;
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}
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return -1;
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}
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void SettingsTree::moveItemForward(QTreeWidgetItem *parent, int oldIndex,
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int newIndex)
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{
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for (int i = 0; i < oldIndex - newIndex; ++i)
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delete childAt(parent, newIndex);
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}
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