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ui/qg_recentfiles.cpp

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+/****************************************************************************
+**
+** This file is part of the LibreCAD project, a 2D CAD program
+**
+** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
+** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
+**
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file gpl-2.0.txt included in the
+** packaging of this file.
+**
+** 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
+**
+** This copyright notice MUST APPEAR in all copies of the script!
+**
+**********************************************************************/
+#include <QFileInfo>
+#include <QAction>
+#include <QActionGroup>
+#include <QMenu>
+#include "qg_recentfiles.h"
+
+#include "rs_debug.h"
+#include "rs_settings.h"
+
+/**
+ * Constructor
+ * @param number Number of files that can be stored in the list at maximum
+ */
+QG_RecentFiles::QG_RecentFiles(QObject* parent, int number)
+    : QObject(parent)
+    , number(number)
+{}
+
+QG_RecentFiles::~QG_RecentFiles()
+{
+	RS_SETTINGS->beginGroup("/RecentFiles");
+	for (int i=0; i<count(); ++i) {
+		RS_SETTINGS->writeEntry(QString("/File") + QString::number(i+1), get(i));
+	}
+	RS_SETTINGS->endGroup();
+}
+
+/**
+ * Adds a file to the list of recently loaded files if
+ * it's not already in the list.
+ */
+void QG_RecentFiles::add(const QString& filename) {
+    RS_DEBUG->print("QG_RecentFiles::add");
+	if(filename.size()>2048){
+		RS_DEBUG->print(RS_Debug::D_ERROR, "QG_RecentFiles::add filename too long at %d\n", filename.size());
+		return;
+	}
+
+    // is the file already in the list?
+    int i0=files.indexOf(filename);
+    if (i0>=0) {
+		if (i0+1==files.size()) return; //do nothing, file already being the last in list
+        //move the i0 to the last
+		files.erase(files.begin() + i0);
+		files.push_back(filename);
+        return;
+    }
+
+    // append
+    //files.push_back(filename);
+    files.append(filename);
+	if(files.size() > number)
+		files.erase(files.begin(), files.begin() + files.size() - number);
+	RS_DEBUG->print("QG_RecentFiles::add: OK");
+}
+
+
+QString QG_RecentFiles::get(int i) const{
+	if (i<files.size()) {
+		return files[i];
+	} else {
+		return QString("");
+	}
+}
+
+int QG_RecentFiles::count() const {
+	return files.count();
+}
+
+/** @return number of files that can be stored in the list at maximum */
+int QG_RecentFiles::getNumber() const {
+	return number;
+}
+
+int QG_RecentFiles::indexOf(const QString& filename) const{
+	return files.indexOf(filename) ;
+}
+
+void QG_RecentFiles::addFiles(QMenu* file_menu)
+{
+    RS_DEBUG->print("QG_RecentFiles::addFiles()");
+
+    RS_SETTINGS->beginGroup("/RecentFiles");
+    for (int i=0; i<number; ++i)
+    {
+        QString filename = RS_SETTINGS->readEntry(QString("/File") +
+                           QString::number(i+1));
+        if (QFileInfo(filename).exists()) add(filename);
+    }
+    RS_SETTINGS->endGroup();
+
+    QActionGroup* a_group = new QActionGroup(this);
+    connect(a_group, SIGNAL(triggered(QAction*)),
+            parent(), SLOT(slotFileOpenRecent(QAction*)));
+
+    for (int i = 0; i < number; ++i)
+    {
+        recentFilesAction.push_back(new QAction(a_group));
+        QAction* a=recentFilesAction.back();
+        a->setVisible(false);
+        file_menu->addAction(a);
+    }
+    if (count()>0) {
+        updateRecentFilesMenu();
+    }
+}
+
+
+void QG_RecentFiles::updateRecentFilesMenu() {
+	RS_DEBUG->print("QG_RecentFiles::updateRecentFilesMenu(): begin\n");
+
+	RS_DEBUG->print("Updating recent file menu...");
+	int numRecentFiles = std::min(count(), getNumber());
+
+	for (int i = 0; i < numRecentFiles; ++i) {
+		//oldest on top
+//        QString text = tr("&%1 %2").arg(i + 1).arg(recentFiles->get(i));
+		//newest on top
+
+        auto file_path = get(numRecentFiles-i-1);
+        if (file_path.length() > 128)
+            file_path = "..." + file_path.right(128);
+        QString const& text = tr("&%1 %2").arg(i + 1).arg(file_path);
+
+		recentFilesAction[i]->setText(text);
+		//newest on top
+		recentFilesAction[i]->setData(get(numRecentFiles-i-1));
+		recentFilesAction[i]->setVisible(true);
+	}
+	for (int j = numRecentFiles; j < getNumber(); ++j)
+		recentFilesAction[j]->setVisible(false);
+	RS_DEBUG->print("QG_RecentFiles::updateRecentFilesMenu(): ok\n");
+}
+
+