Alessandro Bonazzi
8c43d5cf2f
Files correlati : cg0.exe cg0700a.msk cg0700b.msk cg3.exe cg4.exe Bug : Commento: Merge 1.0 libraries
351 lines
11 KiB
C++
351 lines
11 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the tools applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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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 http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qdbusmodel.h"
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#include <QtCore/qvector.h>
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#include <QtXml/QtXml>
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struct QDBusItem
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{
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inline QDBusItem(QDBusModel::Type aType, const QString &aName, QDBusItem *aParent = 0)
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: type(aType), parent(aParent), isPrefetched(type != QDBusModel::PathItem), name(aName)
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{}
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inline ~QDBusItem()
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{
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qDeleteAll(children);
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}
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QString path() const
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{
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Q_ASSERT(type == QDBusModel::PathItem);
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QString s;
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const QDBusItem *item = this;
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while (item) {
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s.prepend(item->name);
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item = item->parent;
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}
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if (s.length() > 1)
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s.chop(1); // remove tailing slash
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return s;
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}
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QDBusModel::Type type;
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QDBusItem *parent;
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QVector<QDBusItem *> children;
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bool isPrefetched;
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QString name;
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QString caption;
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QString typeSignature;
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};
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QDomDocument QDBusModel::introspect(const QString &path)
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{
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QDomDocument doc;
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QDBusInterface iface(service, path, QLatin1String("org.freedesktop.DBus.Introspectable"), c);
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if (!iface.isValid()) {
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QDBusError err(iface.lastError());
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emit busError(QString::fromLatin1("Cannot introspect object %1 at %2:\n %3 (%4)\n").arg(path).arg(
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service).arg(err.name()).arg(err.message()));
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return doc;
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}
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QDBusReply<QString> xml = iface.call(QLatin1String("Introspect"));
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if (!xml.isValid()) {
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QDBusError err(xml.error());
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if (err.isValid()) {
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emit busError(QString::fromLatin1("Call to object %1 at %2:\n %3 (%4) failed\n").arg(
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path).arg(service).arg(err.name()).arg(err.message()));
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} else {
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emit busError(QString::fromLatin1("Invalid XML received from object %1 at %2\n").arg(
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path).arg(service));
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}
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return doc;
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}
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doc.setContent(xml);
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return doc;
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}
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void QDBusModel::addMethods(QDBusItem *parent, const QDomElement &iface)
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{
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Q_ASSERT(parent);
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QDomElement child = iface.firstChildElement();
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while (!child.isNull()) {
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QDBusItem *item = 0;
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if (child.tagName() == QLatin1String("method")) {
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item = new QDBusItem(QDBusModel::MethodItem,
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child.attribute(QLatin1String("name")), parent);
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item->caption = QLatin1String("Method: ") + item->name;
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//get "type" from <arg> where "direction" is "in"
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QDomElement n = child.firstChildElement();
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while (!n.isNull()) {
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if (n.attribute(QLatin1String("direction")) == QLatin1String("in"))
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item->typeSignature += n.attribute(QLatin1String("type"));
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n = n.nextSiblingElement();
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}
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} else if (child.tagName() == QLatin1String("signal")) {
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item = new QDBusItem(QDBusModel::SignalItem,
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child.attribute(QLatin1String("name")), parent);
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item->caption = QLatin1String("Signal: ") + item->name;
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} else if (child.tagName() == QLatin1String("property")) {
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item = new QDBusItem(QDBusModel::PropertyItem,
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child.attribute(QLatin1String("name")), parent);
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item->caption = QLatin1String("Property: ") + item->name;
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} else {
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qDebug() << "addMethods: unknown tag:" << child.tagName();
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}
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if (item)
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parent->children.append(item);
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child = child.nextSiblingElement();
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}
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}
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void QDBusModel::addPath(QDBusItem *parent)
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{
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Q_ASSERT(parent);
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QString path = parent->path();
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QDomDocument doc = introspect(path);
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QDomElement node = doc.documentElement();
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QDomElement child = node.firstChildElement();
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while (!child.isNull()) {
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if (child.tagName() == QLatin1String("node")) {
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QDBusItem *item = new QDBusItem(QDBusModel::PathItem,
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child.attribute(QLatin1String("name")) + QLatin1Char('/'), parent);
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parent->children.append(item);
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addMethods(item, child);
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} else if (child.tagName() == QLatin1String("interface")) {
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QDBusItem *item = new QDBusItem(QDBusModel::InterfaceItem,
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child.attribute(QLatin1String("name")), parent);
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parent->children.append(item);
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addMethods(item, child);
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} else {
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qDebug() << "addPath: Unknown tag name:" << child.tagName();
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}
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child = child.nextSiblingElement();
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}
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parent->isPrefetched = true;
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}
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QDBusModel::QDBusModel(const QString &aService, const QDBusConnection &connection)
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: service(aService), c(connection), root(0)
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{
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root = new QDBusItem(QDBusModel::PathItem, QLatin1String("/"));
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}
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QDBusModel::~QDBusModel()
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{
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delete root;
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}
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QModelIndex QDBusModel::index(int row, int column, const QModelIndex &parent) const
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{
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const QDBusItem *item = static_cast<QDBusItem *>(parent.internalPointer());
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if (!item)
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item = root;
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if (column != 0 || row < 0 || row >= item->children.count())
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return QModelIndex();
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return createIndex(row, 0, item->children.at(row));
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}
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QModelIndex QDBusModel::parent(const QModelIndex &child) const
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{
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QDBusItem *item = static_cast<QDBusItem *>(child.internalPointer());
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if (!item || !item->parent || !item->parent->parent)
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return QModelIndex();
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return createIndex(item->parent->parent->children.indexOf(item->parent), 0, item->parent);
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}
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int QDBusModel::rowCount(const QModelIndex &parent) const
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{
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QDBusItem *item = static_cast<QDBusItem *>(parent.internalPointer());
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if (!item)
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item = root;
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if (!item->isPrefetched)
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const_cast<QDBusModel *>(this)->addPath(item);
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return item->children.count();
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}
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int QDBusModel::columnCount(const QModelIndex &) const
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{
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return 1;
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}
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QVariant QDBusModel::data(const QModelIndex &index, int role) const
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{
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const QDBusItem *item = static_cast<QDBusItem *>(index.internalPointer());
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if (!item)
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return QVariant();
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if (role != Qt::DisplayRole)
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return QVariant();
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return item->caption.isEmpty() ? item->name : item->caption;
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}
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QVariant QDBusModel::headerData(int section, Qt::Orientation orientation, int role) const
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{
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if (role != Qt::DisplayRole || orientation == Qt::Vertical || section != 0)
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return QVariant();
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return QLatin1String("Methods");
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}
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QDBusModel::Type QDBusModel::itemType(const QModelIndex &index) const
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{
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const QDBusItem *item = static_cast<QDBusItem *>(index.internalPointer());
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return item ? item->type : PathItem;
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}
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void QDBusModel::refresh(const QModelIndex &aIndex)
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{
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QModelIndex index = aIndex;
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while (index.isValid() && static_cast<QDBusItem *>(index.internalPointer())->type != PathItem) {
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index = index.parent();
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}
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QDBusItem *item = static_cast<QDBusItem *>(index.internalPointer());
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if (!item)
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item = root;
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if (!item->children.isEmpty()) {
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beginRemoveRows(index, 0, item->children.count() - 1);
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qDeleteAll(item->children);
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item->children.clear();
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endRemoveRows();
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}
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addPath(item);
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if (!item->children.isEmpty()) {
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beginInsertRows(index, 0, item->children.count() - 1);
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endInsertRows();
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}
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}
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QString QDBusModel::dBusPath(const QModelIndex &aIndex) const
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{
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QModelIndex index = aIndex;
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while (index.isValid() && static_cast<QDBusItem *>(index.internalPointer())->type != PathItem) {
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index = index.parent();
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}
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QDBusItem *item = static_cast<QDBusItem *>(index.internalPointer());
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if (!item)
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item = root;
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return item->path();
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}
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QString QDBusModel::dBusInterface(const QModelIndex &index) const
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{
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QDBusItem *item = static_cast<QDBusItem *>(index.internalPointer());
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if (!item)
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return QString();
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if (item->type == InterfaceItem)
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return item->name;
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if (item->parent && item->parent->type == InterfaceItem)
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return item->parent->name;
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return QString();
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}
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QString QDBusModel::dBusMethodName(const QModelIndex &index) const
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{
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QDBusItem *item = static_cast<QDBusItem *>(index.internalPointer());
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return item ? item->name : QString();
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}
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QString QDBusModel::dBusTypeSignature(const QModelIndex &index) const
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{
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QDBusItem *item = static_cast<QDBusItem *>(index.internalPointer());
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return item ? item->typeSignature : QString();
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}
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QModelIndex QDBusModel::findObject(const QDBusObjectPath &objectPath)
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{
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QStringList path = objectPath.path().split(QLatin1Char('/'), QString::SkipEmptyParts);
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QDBusItem *item = root;
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int childIdx = -1;
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while (item && !path.isEmpty()) {
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const QString branch = path.takeFirst() + QLatin1Char('/');
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childIdx = -1;
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// do a linear search over all the children
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for (int i = 0; i < item->children.count(); ++i) {
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QDBusItem *child = item->children.at(i);
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if (child->type == PathItem && child->name == branch) {
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item = child;
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childIdx = i;
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// prefetch the found branch
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if (!item->isPrefetched)
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addPath(item);
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break;
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}
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}
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// branch not found - bail out
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if (childIdx == -1)
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return QModelIndex();
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}
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// found the right item
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if (childIdx != -1 && item && path.isEmpty())
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return createIndex(childIdx, 0, item);
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return QModelIndex();
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}
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