GH-1689: added expand/collapse all to structure view for Eclipse

Author: martinlippert

eclipse-language-servers/org.springframework.tooling.boot.ls/src/org/springframework/tooling/boot/ls/views/ExpandCollapseAction.java

@@ -0,0 +1,39 @@
+/*******************************************************************************
+ * Copyright (c) 2025 Broadcom, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Broadcom, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.tooling.boot.ls.views;
+
+import org.eclipse.jdt.internal.ui.JavaPluginImages;
+import org.eclipse.jface.action.Action;
+
+class ExpandCollapseAction extends Action {
+	
+	private final LogicalStructureView logicalStructureView;
+	private final boolean expand;
+
+	@SuppressWarnings("restriction")
+	ExpandCollapseAction(LogicalStructureView logicalStructureView, boolean expand) {
+		super(expand ? "Expand All" : "Collapse All");
+		this.logicalStructureView = logicalStructureView;
+		this.expand = expand;
+		setToolTipText(expand ? "Expand All" : "Collapse All");
+		JavaPluginImages.setLocalImageDescriptors(this, expand ? "expandall.svg" : "collapseall.svg");
+	}
+	
+	@Override
+	public void run() {
+		if (expand) {
+			this.logicalStructureView.expandAll();
+		} else {
+			this.logicalStructureView.collapseAll();
+		}
+	}
+}
+

eclipse-language-servers/org.springframework.tooling.boot.ls/src/org/springframework/tooling/boot/ls/views/LogicalStructureView.java

@@ -121,6 +121,8 @@ public void createPartControl(Composite parent) {
 	private void initActions(IActionBars actionBars) {
 		actionBars.getToolBarManager().add(new GroupingAction(this));
 		actionBars.getToolBarManager().add(new RefreshAction(this));
+		actionBars.getToolBarManager().add(new ExpandCollapseAction(this, true));
+		actionBars.getToolBarManager().add(new ExpandCollapseAction(this, false));
 	}
 
 	@Override
@@ -135,6 +137,14 @@ void setGroupings(Map<String, List<String>> groupings) {
 	Map<String, List<String>> getGroupings() {
 		return groupingRepository.getWorkspaceGroupings();
 	}
+	
+	void expandAll() {
+		treeViewer.expandAll();
+	}
+	
+	void collapseAll() {
+		treeViewer.collapseAll();
+	}
 
 }