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/*
* Copyright (C) 2015 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QDebug>
#include <QGuiApplication>
#include <QKeyEvent>
#include <QKeySequence>
#include "globalshortcutregistry.h"
namespace {
QWindow* windowForShortcut(GlobalShortcut *sc) {
QObject* parent= sc;
while(parent) {
if (auto item = qobject_cast<QQuickItem*>(parent)) {
auto window = item->window();
if (window) return window;
}
parent = parent->parent();
}
return nullptr;
}
} // namespace
GlobalShortcutRegistry::GlobalShortcutRegistry(QObject *parent)
: QObject(parent)
{
connect(qGuiApp, &QGuiApplication::focusWindowChanged, this, &GlobalShortcutRegistry::setupFilterOnWindow);
setupFilterOnWindow(qGuiApp->focusWindow());
}
GlobalShortcutList GlobalShortcutRegistry::shortcuts() const
{
return m_shortcuts;
}
bool GlobalShortcutRegistry::hasShortcut(const QVariant &seq) const
{
return m_shortcuts.contains(seq);
}
void GlobalShortcutRegistry::addShortcut(const QVariant &seq, GlobalShortcut *sc)
{
if (sc) {
if (!m_shortcuts.contains(seq)) { // create a new entry
m_shortcuts.insert(seq, {sc});
} else { // append to an existing one
auto shortcuts = m_shortcuts[seq];
shortcuts.append(sc);
m_shortcuts.insert(seq, shortcuts);
}
connect(sc, &GlobalShortcut::destroyed, this, &GlobalShortcutRegistry::removeShortcut);
}
}
void GlobalShortcutRegistry::removeShortcut(QObject *obj)
{
QMutableMapIterator<QVariant, QVector<QPointer<GlobalShortcut>>> it(m_shortcuts);
while (it.hasNext()) {
it.next();
GlobalShortcut * scObj = static_cast<GlobalShortcut *>(obj);
if (scObj && it.value().contains(scObj)) {
it.value().removeAll(scObj);
if (it.value().isEmpty()) {
it.remove();
}
}
}
}
bool GlobalShortcutRegistry::eventFilter(QObject *obj, QEvent *event)
{
Q_ASSERT(m_filteredWindow);
Q_ASSERT(obj == static_cast<QObject*>(m_filteredWindow.data()));
if (event->type() == QEvent::KeyPress || event->type() == QEvent::KeyRelease) {
QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
// Make a copy of the event so we don't alter it for passing on.
QKeyEvent eCopy(keyEvent->type(),
keyEvent->key(),
keyEvent->modifiers(),
keyEvent->text(),
keyEvent->isAutoRepeat(),
keyEvent->count());
int seq = keyEvent->key() + keyEvent->modifiers();
bool acceptedAtLeastOnce = false;
if (m_shortcuts.contains(seq)) {
const auto shortcuts = m_shortcuts.value(seq);
Q_FOREACH(const auto &shortcut, shortcuts) {
if (shortcut) {
auto window = windowForShortcut(shortcut);
if (!window || window == obj) { // accept shortcut if it's not attached to a window or it's window is active.
qApp->sendEvent(shortcut, &eCopy);
acceptedAtLeastOnce = acceptedAtLeastOnce || eCopy.isAccepted();
}
}
}
}
return acceptedAtLeastOnce;
}
return QObject::eventFilter(obj, event);
}
void GlobalShortcutRegistry::setupFilterOnWindow(QWindow* window)
{
if (m_filteredWindow) {
m_filteredWindow->removeEventFilter(this);
m_filteredWindow.clear();
}
if (window) {
m_filteredWindow = window;
window->installEventFilter(this);
}
}
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