valuetreeeditor drag&drop abd recent files support

utils/valuetreeeditor/mainwindow.cpp

@@ -6,6 +6,7 @@
 #include <QActionGroup>
 #include <QFileInfo>
 #include <QMetaEnum>
+#include <QMimeData>
 #include <pifile.h>
 #include <pijson.h>
 #include <pivaluetree.h>
@@ -14,6 +15,8 @@
 
 MainWindow::MainWindow(QWidget * parent): EMainWindow(parent), Ui::MainWindow() {
 	setupUi(this);
+	setRecentMenu(menuOpen_recent);
+	setAcceptDrops(true);
 	session.setFile(QAD::userPath(QAD::ltConfig, "session_valuetreeeditor"));
 	session.addEntry(this);
 	session.load();
@@ -91,6 +94,34 @@ void MainWindow::changeEvent(QEvent * e) {
 }
 
 
+void MainWindow::dragEnterEvent(QDragEnterEvent * e) {
+	if (!e->mimeData()) return;
+	QString str = e->mimeData()->text();
+	if (str.isEmpty()) return;
+	static QStringList exts({"conf", "ini", "json", "bin"});
+	if (exts.contains(QFileInfo(str).suffix().toLower().trimmed())) {
+		e->accept();
+	}
+}
+
+
+void MainWindow::dropEvent(QDropEvent * e) {
+	if (!e->mimeData()) return;
+	auto path = QUrl(e->mimeData()->text()).toLocalFile();
+	if (load(path)) addToRecent(path);
+}
+
+
+void MainWindow::loadingSession(QPIConfig & conf) {
+	setRecentFiles(conf.getValue("recent files").toStringList());
+}
+
+
+void MainWindow::savingSession(QPIConfig & conf) {
+	conf.setValue("recent files", recentFiles());
+}
+
+
 QString MainWindow::loadFilter() {
 	return "All types(*.conf *.ini *.json *.bin);;INI format(*.conf *.ini);;JSON(*.json);;Binary(*.bin)";
 }