added tooltips to component tree and InsertHistory

src/main/java/de/neemann/digital/draw/library/LibraryNode.java

@@ -1,8 +1,11 @@
 package de.neemann.digital.draw.library;
 
+import de.neemann.digital.core.element.ElementAttributes;
 import de.neemann.digital.core.element.ElementTypeDescription;
 import de.neemann.digital.draw.elements.VisualElement;
 import de.neemann.digital.draw.shapes.ShapeFactory;
+import de.neemann.digital.lang.Lang;
+import de.neemann.gui.StringUtils;
 
 import javax.swing.*;
 import java.io.File;
@@ -271,4 +274,17 @@ public class LibraryNode implements Iterable<LibraryNode> {
         icon = null;
         library.fireLibraryChanged(this);
     }
+
+    /**
+     * @return the tool tip text
+     */
+    public String getToolTipText() {
+        if (isCustom()) {
+            if (description == null)
+                return null;
+            else
+                return StringUtils.textToHTML(description.getDescription(new ElementAttributes()));
+        } else
+            return StringUtils.textToHTML(Lang.getNull("elem_" + getName() + "_tt"));
+    }
 }

src/main/java/de/neemann/digital/gui/InsertAction.java

@@ -82,4 +82,11 @@ public final class InsertAction extends ToolTipAction {
             SwingUtilities.invokeLater(new ErrorMessage(Lang.get("msg_errorImportingModel")).addCause(ex));
         }
     }
+
+    /**
+     * @return the library node
+     */
+    public LibraryNode getNode() {
+        return node;
+    }
 }

src/main/java/de/neemann/digital/gui/InsertHistory.java

@@ -44,7 +44,7 @@ public class InsertHistory implements LibraryListener {
         if (!contains(action)) {
             WrapperAction wrapper = new WrapperAction(action, bar.getComponentCount());
             wrappers.add(wrapper);
-            bar.add(wrapper);
+            bar.add(wrapper).setToolTipText(action.getNode().getToolTipText());
             if (wrappers.size() > MAX_ICONS) {
                 int oldest = findOldestIndex();
                 removeWrapperFromToolBar(wrappers.get(oldest));

src/main/java/de/neemann/digital/gui/LibrarySelector.java

@@ -7,7 +7,6 @@ import de.neemann.digital.draw.shapes.ShapeFactory;
 import de.neemann.digital.gui.components.CircuitComponent;
 import de.neemann.digital.lang.Lang;
 import de.neemann.gui.ErrorMessage;
-import de.neemann.gui.StringUtils;
 import de.neemann.gui.ToolTipAction;
 
 import javax.swing.*;
@@ -85,7 +84,7 @@ public class LibrarySelector implements LibraryListener {
     private void addComponents(JMenu parts, LibraryNode node) {
         if (node.isLeaf()) {
             parts.add(new InsertAction(node, insertHistory, circuitComponent, shapeFactory)
-                    .setToolTip(createToolTipText(node.getName()))
+                    .setToolTip(node.getToolTipText())
                     .createJMenuItem());
         } else {
             JMenu subMenu = new JMenu(node.getName());
@@ -94,8 +93,4 @@ public class LibrarySelector implements LibraryListener {
             parts.add(subMenu);
         }
     }
-
-    private static String createToolTipText(String elementName) {
-        return StringUtils.textToHTML(Lang.getNull("elem_" + elementName + "_tt"));
-    }
 }

src/main/java/de/neemann/digital/gui/components/tree/SelectTree.java

@@ -57,6 +57,19 @@ public class SelectTree extends JTree {
             }
         });
         setCellRenderer(new MyCellRenderer());
+        setToolTipText("");
+    }
+
+    @Override
+    public String getToolTipText(MouseEvent e) {
+        TreePath selPath = getPathForLocation(e.getX(), e.getY());
+        if (selPath != null && selPath.getPathCount() > 0) {
+            Object lp = selPath.getLastPathComponent();
+            if (lp instanceof LibraryNode) {
+                return ((LibraryNode) lp).getToolTipText();
+            }
+        }
+        return null;
     }
 
     private class MyCellRenderer extends DefaultTreeCellRenderer {