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authorOlivier Tilloy <olivier.tilloy@canonical.com>2012-10-04 17:12:09 +0200
committerOlivier Tilloy <olivier.tilloy@canonical.com>2012-10-04 17:12:09 +0200
commit36cebbb3e17b0b9df03a3a288e56b5d1e1fedee1 (patch)
tree1dcefe0b0813acf2ef4a8aadb2e92388118a3394 /libqmenumodel/src/qstateaction.cpp
parent62d2c4b30435bff7dc25441dd1ce55d519d80b05 (diff)
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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 "qstateaction.h"
+
+#include "qdbusactiongroup.h"
+
+/*!
+ \qmlclass QStateAction
+ \inherits QAction
+
+ \brief A QStateAction implementation to be used with \l QDBusActionGroup
+
+ \bold {This component is under heavy development.}
+
+ This class can be used as a proxy for an action that is exported over D-Bus
+
+ \code
+ QDBusActionGroup {
+ id: actionGroup
+ busType: 1
+ busName: "com.ubuntu.menu"
+ objectPath: "com/ubuntu/menu/actions"
+ }
+
+ Button {
+ visible: actionGroup.getAction("button.bvisible").status
+ }
+ \endcode
+*/
+
+/*! \internal */
+QStateAction::QStateAction(QDBusActionGroup *group, const QString &name)
+ : QAction(name, group),
+ m_group(group)
+{
+ QObject::connect(this, SIGNAL(triggered()), this, SLOT(onTriggered()));
+
+ // This keep the code clean
+ // But maybe we need move the action state control to QActionGroup to optimizations
+ QObject::connect(m_group, SIGNAL(actionAppear(QString)),
+ this, SLOT(onActionAppear(QString)));
+ QObject::connect(m_group, SIGNAL(actionVanish(QString)),
+ this, SLOT(onActionVanish(QString)));
+ QObject::connect(m_group, SIGNAL(actionStateChanged(QString,QVariant)),
+ this, SLOT(onActionStateChanged(QString,QVariant)));
+
+
+
+ bool isValid = m_group->hasAction(name);
+ setValid(isValid);
+ if (isValid) {
+ setState(m_group->actionState(name));
+ }
+}
+
+/*!
+ \qmlproperty int QStateAction::state
+ This property holds the current action state
+*/
+QVariant QStateAction::state() const
+{
+ return m_state;
+}
+
+/*!
+ \qmlproperty int QStateAction::isValid
+ This property return if the current Action is valid or not
+ A valid Action is a action which has a DBus action linked
+*/
+bool QStateAction::isValid() const
+{
+ return m_valid;
+}
+
+void QStateAction::updateState(const QVariant &state)
+{
+ m_group->updateActionState(text(), state);
+}
+
+/*! \internal */
+void QStateAction::setValid(bool valid)
+{
+ if (m_valid != valid) {
+ m_valid = valid;
+ Q_EMIT validChanged(m_valid);
+ }
+}
+
+/*! \internal */
+void QStateAction::setState(const QVariant &state)
+{
+ if (m_state != state) {
+ m_state = state;
+ Q_EMIT stateChanged(m_state);
+ }
+}
+
+/*! \internal */
+void QStateAction::onTriggered()
+{
+ updateState(QVariant());
+}
+
+/*! \internal */
+void QStateAction::onActionAppear(const QString &name)
+{
+ if (text() == name) {
+ setState(m_group->actionState(name));
+ setValid(true);
+ }
+}
+
+/*! \internal */
+void QStateAction::onActionVanish(const QString &name)
+{
+ if (text() == name) {
+ setState(QVariant());
+ setValid(false);
+ }
+}
+
+/*! \internal */
+void QStateAction::onActionStateChanged(const QString &name, const QVariant &state)
+{
+ if (text() == name) {
+ setState(state);
+ }
+}