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lximage-qt-packaging/src/mrumenu.cpp

115 lines
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/*
* LXImage-Qt - a simple and fast image viewer
* Copyright (C) 2013 PCMan <pcman.tw@gmail.com>
* Copyright (C) 2018 Nathan Osman <nathan@quickmediasolutions.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <QMutableListIterator>
#include "application.h"
#include "mrumenu.h"
#include "settings.h"
const int MaxItems = 5;
using namespace LxImage;
MruMenu::MruMenu(QWidget *parent)
: QMenu(parent),
mFilenames(static_cast<Application*>(qApp)->settings().recentlyOpenedFiles())
{
for (QStringList::const_iterator i = mFilenames.constBegin(); i != mFilenames.constEnd(); ++i) {
addAction(createAction(*i));
}
// Add a separator and hide it if there are no items in the list
mSeparator = addSeparator();
mSeparator->setVisible(!mFilenames.empty());
// Add the clear action and disable it if there are no items in the list
mClearAction = new QAction(tr("&Clear"));
mClearAction->setEnabled(!mFilenames.empty());
connect(mClearAction, &QAction::triggered, this, &MruMenu::onClearTriggered);
addAction(mClearAction);
}
void MruMenu::addItem(const QString &filename)
{
if (mFilenames.isEmpty()) {
mSeparator->setVisible(true);
mClearAction->setEnabled(true);
}
// If the filename is already in the list, remove it
int index = mFilenames.indexOf(filename);
if (index != -1) {
mFilenames.removeAt(index);
destroyAction(index);
}
// Insert the action at the beginning of the list
mFilenames.push_front(filename);
insertAction(actions().first(), createAction(filename));
// If the list contains more than MaxItems, remove the last one
if (mFilenames.count() > MaxItems) {
mFilenames.removeLast();
destroyAction(MaxItems - 1);
}
updateSettings();
}
void MruMenu::onItemTriggered()
{
Q_EMIT itemClicked(qobject_cast<QAction*>(sender())->text());
}
void MruMenu::onClearTriggered()
{
while (!mFilenames.empty()) {
mFilenames.removeFirst();
destroyAction(0);
}
// Hide the separator and disable the clear action
mSeparator->setVisible(false);
mClearAction->setEnabled(false);
updateSettings();
}
QAction *MruMenu::createAction(const QString &filename)
{
QAction *action = new QAction(filename, this);
connect(action, &QAction::triggered, this, &MruMenu::onItemTriggered);
return action;
}
void MruMenu::destroyAction(int index)
{
QAction *action = actions().at(index);
removeAction(action);
delete action;
}
void MruMenu::updateSettings()
{
static_cast<Application*>(qApp)->settings().setRecentlyOpenedFiles(mFilenames);
}