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/*
* Copyright 2012 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Renato Araujo Oliveira Filho <renato@canonical.com>
*/
#include "qmenumodel.h"
#include "converter.h"
#include <QDebug>
/*!
\qmlclass QMenuModel
\brief The QMenuModel class implements the base list model for menus
\bold {This component is under heavy development.}
This is a abstracted class used by \l QDBusMenuModel.
*/
/*! \internal */
QMenuModel::QMenuModel(GMenuModel *other, QObject *parent)
: QAbstractListModel(parent),
m_menuModel(0),
m_signalChangedId(0)
{
static QHash<int, QByteArray> rolesNames;
if (rolesNames.empty()) {
rolesNames[Action] = "action";
rolesNames[Label] = "label";
rolesNames[LinkSection] = "linkSection";
rolesNames[LinkSubMenu] = "linkSubMenu";
rolesNames[Extra] = "extra";
}
setRoleNames(rolesNames);
setMenuModel(other);
}
/*! \internal */
QMenuModel::~QMenuModel()
{
setMenuModel(NULL);
}
/*! \internal */
void QMenuModel::setMenuModel(GMenuModel *other)
{
if (m_menuModel == other) {
return;
}
beginResetModel();
if (m_menuModel) {
g_signal_handler_disconnect(m_menuModel, m_signalChangedId);
m_signalChangedId = 0;
g_object_unref(m_menuModel);
}
m_menuModel = other;
if (m_menuModel) {
// this will trigger the menu load
(void) g_menu_model_get_n_items(m_menuModel);
m_signalChangedId = g_signal_connect(m_menuModel,
"items-changed",
G_CALLBACK(QMenuModel::onItemsChanged),
this);
}
endResetModel();
}
/*! \internal */
GMenuModel *QMenuModel::menuModel() const
{
return m_menuModel;
}
/*! \internal */
QVariant QMenuModel::data(const QModelIndex &index, int role) const
{
QVariant attribute;
int rowCountValue = rowCount();
if ((rowCountValue > 0) && (index.row() >= 0) && (index.row() < rowCountValue)) {
if (m_menuModel) {
switch (role) {
case Action:
attribute = getStringAttribute(index, G_MENU_ATTRIBUTE_ACTION);
break;
case Label:
attribute = getStringAttribute(index, G_MENU_ATTRIBUTE_LABEL);
break;
case LinkSection:
attribute = getLink(index, G_MENU_LINK_SECTION);
break;
case LinkSubMenu:
attribute = getLink(index, G_MENU_LINK_SUBMENU);
break;
case Extra:
attribute = getExtraProperties(index);
break;
default:
break;
}
}
}
return attribute;
}
/*! \internal */
QModelIndex QMenuModel::parent(const QModelIndex &index) const
{
return QModelIndex();
}
/*! \internal */
int QMenuModel::rowCount(const QModelIndex &) const
{
if (m_menuModel) {
return g_menu_model_get_n_items(m_menuModel);
}
return 0;
}
/*! \internal */
QVariant QMenuModel::getStringAttribute(const QModelIndex &index,
const QString &attribute) const
{
QVariant result;
gchar* value = NULL;
g_menu_model_get_item_attribute(m_menuModel,
index.row(),
attribute.toLatin1(),
"s", &value);
if (value) {
result = QVariant(QString::fromLatin1(value));
g_free(value);
}
return result;
}
/*! \internal */
QVariant QMenuModel::getLink(const QModelIndex &index,
const QString &linkName) const
{
GMenuModel *link;
link = g_menu_model_get_item_link(m_menuModel,
index.row(),
linkName.toLatin1());
if (link) {
QMenuModel *other = new QMenuModel(link, const_cast<QMenuModel*>(this));
return QVariant::fromValue<QObject*>(other);
}
return QVariant();
}
/*! \internal */
QString QMenuModel::parseExtraPropertyName(const QString &name) const
{
QString newName(name);
if (name.startsWith("x-")) {
newName = name.mid(2);
}
return newName.replace("-", "_");
}
/*! \internal */
QVariant QMenuModel::getExtraProperties(const QModelIndex &index) const
{
GMenuAttributeIter *iter = g_menu_model_iterate_item_attributes(m_menuModel, index.row());
if (iter == NULL) {
return QVariant();
}
QVariantMap extra;
const gchar *attrName = NULL;
GVariant *value = NULL;
while (g_menu_attribute_iter_get_next (iter, &attrName, &value)) {
if (strncmp("x-", attrName, 2) == 0) {
extra.insert(parseExtraPropertyName(attrName),
Converter::toQVariant(value));
}
}
return extra;
}
/*! \internal */
void QMenuModel::onItemsChanged(GMenuModel *,
gint position,
gint removed,
gint added,
gpointer data)
{
QMenuModel *self = reinterpret_cast<QMenuModel*>(data);
if (removed > 0) {
self->beginRemoveRows(QModelIndex(), position, position + removed - 1);
self->endRemoveRows();
}
if (added > 0) {
self->beginInsertRows(QModelIndex(), position, position + added - 1);
self->endInsertRows();
}
}
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