fix(gui): restore open tabs on project load (regression fix)

jadx-gui/src/main/java/jadx/gui/ui/MainWindow.java

@@ -403,15 +403,22 @@ public class MainWindow extends JFrame {
 	}
 
 	void open(List<Path> paths, Runnable onFinish) {
+		closeAll();
 		if (paths.size() == 1) {
 			Path singleFile = paths.get(0);
 			String fileExtension = CommonFileUtils.getFileExtension(singleFile.getFileName().toString());
 			if (fileExtension != null && fileExtension.equalsIgnoreCase(JadxProject.PROJECT_EXTENSION)) {
-				openProject(singleFile, onFinish);
+				List<Path> projectFiles = openProject(singleFile);
+				if (!Utils.isEmpty(projectFiles)) {
+					openFiles(projectFiles, onFinish);
+				}
 				return;
 			}
 		}
-		closeAll();
+		openFiles(paths, onFinish);
+	}
+
+	private void openFiles(List<Path> paths, Runnable onFinish) {
 		project.setFilePath(paths);
 		if (paths.isEmpty()) {
 			return;
@@ -491,9 +498,9 @@ public class MainWindow extends JFrame {
 		return true;
 	}
 
-	private void openProject(Path path, Runnable onFinish) {
+	private List<Path> openProject(Path path) {
 		if (!ensureProjectIsSaved()) {
-			return;
+			return Collections.emptyList();
 		}
 		JadxProject jadxProject = JadxProject.from(path);
 		if (jadxProject == null) {
@@ -506,12 +513,7 @@ public class MainWindow extends JFrame {
 		}
 		updateProject(jadxProject);
 		settings.addRecentProject(path);
-		List<Path> filePaths = jadxProject.getFilePaths();
-		if (filePaths == null) {
-			closeAll();
-		} else {
-			open(filePaths, onFinish);
-		}
+		return jadxProject.getFilePaths();
 	}
 
 	public void updateProject(JadxProject jadxProject) {

jadx-gui/src/main/java/jadx/gui/ui/TabbedPane.java

@@ -35,6 +35,7 @@ import jadx.gui.ui.panel.IViewStateSupport;
 import jadx.gui.ui.panel.ImagePanel;
 import jadx.gui.utils.JumpManager;
 import jadx.gui.utils.JumpPosition;
+import jadx.gui.utils.NLS;
 
 public class TabbedPane extends JTabbedPane {
 	private static final long serialVersionUID = -8833600618794570904L;
@@ -165,42 +166,49 @@ public class TabbedPane extends JTabbedPane {
 		JNode jumpNode = jumpPos.getNode();
 		Objects.requireNonNull(jumpNode, "Null node in JumpPosition");
 
-		final AbstractCodeContentPanel contentPanel = (AbstractCodeContentPanel) getContentPanel(jumpNode);
-		if (contentPanel == null) {
-			return;
-		}
-		SwingUtilities.invokeLater(() -> {
-			selectTab(contentPanel);
-			AbstractCodeArea codeArea = contentPanel.getCodeArea();
-			int pos = jumpPos.getPos();
-			if (pos > 0) {
-				codeArea.scrollToPos(pos);
-			} else {
-				int line = jumpPos.getLine();
-				if (line < 0) {
-					try {
-						line = 1 + codeArea.getLineOfOffset(-line);
-					} catch (BadLocationException e) {
-						LOG.error("Can't get line for: {}", jumpPos, e);
-						line = jumpNode.getLine();
+		mainWindow.getBackgroundExecutor().execute(
+				NLS.str("progress.load"),
+				jumpNode::getContent, // run heavy loading in background
+				status -> {
+					// show the code in UI thread
+					AbstractCodeContentPanel contentPanel = (AbstractCodeContentPanel) getContentPanel(jumpNode);
+					if (contentPanel != null) {
+						scrollToPos(contentPanel, jumpPos);
+						selectTab(contentPanel);
 					}
-				}
-				int lineNum = Math.max(0, line - 1);
+				});
+	}
+
+	private void scrollToPos(AbstractCodeContentPanel contentPanel, JumpPosition jumpPos) {
+		AbstractCodeArea codeArea = contentPanel.getCodeArea();
+		int pos = jumpPos.getPos();
+		if (pos > 0) {
+			codeArea.scrollToPos(pos);
+		} else {
+			int line = jumpPos.getLine();
+			if (line < 0) {
 				try {
-					int offs = codeArea.getLineStartOffset(lineNum);
-					while (StringUtils.isWhite(codeArea.getText(offs, 1).charAt(0))) {
-						offs += 1;
-					}
-					offs += pos;
-					jumpPos.setPos(offs);
-					codeArea.scrollToPos(offs);
+					line = 1 + codeArea.getLineOfOffset(-line);
 				} catch (BadLocationException e) {
-					LOG.error("Failed to jump to position: {}", pos, e);
-					codeArea.scrollToLine(line);
+					LOG.error("Can't get line for: {}", jumpPos, e);
+					line = jumpPos.getNode().getLine();
 				}
 			}
-			codeArea.requestFocus();
-		});
+			int lineNum = Math.max(0, line - 1);
+			try {
+				int offs = codeArea.getLineStartOffset(lineNum);
+				while (StringUtils.isWhite(codeArea.getText(offs, 1).charAt(0))) {
+					offs += 1;
+				}
+				offs += pos;
+				jumpPos.setPos(offs);
+				codeArea.scrollToPos(offs);
+			} catch (BadLocationException e) {
+				LOG.error("Failed to jump to position: {}", pos, e);
+				codeArea.scrollToLine(line);
+			}
+		}
+		codeArea.requestFocus();
 	}
 
 	public boolean showNode(JNode node) {