ProjectFilesystemPlugin 1.1.0: pseudo-threaded tree rebuild

project_fs/ProjectFilesystemPlugin.json.in

@@ -1,7 +1,7 @@
 {
     \"Name\" : \"ProjectFilesystemPlugin\",
-    \"Version\" : \"1.0.0\",
-    \"CompatVersion\" : \"1.0.0\",
+	\"Version\" : \"1.1.0\",
+	\"CompatVersion\" : \"1.1.0\",
     \"Vendor\" : \"Peri4\",
     \"Copyright\" : \"(C) Peri4\",
     \"License\" : \"LGPLv3\",

project_fs/projectfilesystemwidget.cpp

@@ -29,6 +29,7 @@ QFileInfo projectfs_menu_target;
 
 ProjectFilesystemWidget::ProjectFilesystemWidget(QWidget * parent): QWidget(parent) {
 	setupUi(this);
+	in_proc = need_rebuild = false;
 	int is = style()->pixelMetric(QStyle::PM_ButtonIconSize, 0, this);
 	label->setFixedSize(is, is);
 	buttonClear->setIcon(Utils::Icons::CLEAN.icon());
@@ -74,6 +75,7 @@ void ProjectFilesystemWidget::changeEvent(QEvent *e) {
 
 void ProjectFilesystemWidget::createTree(QTreeWidgetItem * ti, const QString & dir) {
 	QFileInfoList fl = QDir(dir).entryInfoList(QDir::AllEntries | QDir::NoDotAndDotDot, QDir::LocaleAware | QDir::DirsFirst);
+	checkProcEvents();
 	for (QFileInfo i: fl) {
 		QString nit = i.fileName();
 		if (i.isDir()) {
@@ -163,7 +165,20 @@ void ProjectFilesystemWidget::setExtVariable() {
 }
 
 
+void ProjectFilesystemWidget::checkProcEvents() {
+	if (tm.elapsed() < 10) return;
+	QApplication::processEvents();
+	tm.start();
+}
+
+
 void ProjectFilesystemWidget::projectsChanged() {
+	if (in_proc) {
+		need_rebuild = true;
+		return;
+	}
+	in_proc = true;
+	tm.start();
 	last_expanded.clear();
 	item_map.clear();
 	int spos = tree->verticalScrollBar()->value();
@@ -192,6 +207,11 @@ void ProjectFilesystemWidget::projectsChanged() {
 	QApplication::restoreOverrideCursor();
 	qApp->processEvents();
 	tree->verticalScrollBar()->setValue(spos);
+	in_proc = false;
+	if (need_rebuild) {
+		need_rebuild = false;
+		projectsChanged();
+	}
 }
 
 

project_fs/projectfilesystemwidget.h

@@ -6,6 +6,7 @@
 #include <extensionsystem/iplugin.h>
 #include <QSortFilterProxyModel>
 #include <QFileSystemModel>
+#include <QElapsedTimer>
 #include <QMenu>
 
 extern QFileInfo projectfs_menu_target;
@@ -32,13 +33,16 @@ protected:
 	void rememberExpanded(QTreeWidgetItem * ti);
 	void restoreExpanded(QTreeWidgetItem * ti);
 	void setExtVariable();
+	void checkProcEvents();
 
+	bool in_proc, need_rebuild;
 	ExtensionSystem::IPlugin * proj_plug;
 	QMenu popup_menu;
 	QMap<QString, QTreeWidgetItem*> item_map;
 	QSet<QString> last_expanded;
 	FilterDialog filter_dialog;
 	FilterDialog::Filter cur_filter;
+	QElapsedTimer tm;
 
 public slots:
 	void projectsChanged();