Merge branch 'develop' of https://source.jalview.org/git/jalview.git into develop

[jalview.git] / src / jalview / gui / ComboBoxTooltipRenderer.java

diff --git a/src/jalview/gui/ComboBoxTooltipRenderer.java b/src/jalview/gui/ComboBoxTooltipRenderer.java
new file mode 100644 (file)
index 0000000..b776757
--- /dev/null
+++ b/src/jalview/gui/ComboBoxTooltipRenderer.java
@@ -0,0 +1,42 @@
+package jalview.gui;
+
+import java.awt.Component;
+import java.util.List;
+
+import javax.swing.DefaultListCellRenderer;
+import javax.swing.JComponent;
+import javax.swing.JList;
+
+/**
+ * A helper class to render a combobox with tooltips
+ * 
+ * @see http
+ *      ://stackoverflow.com/questions/480261/java-swing-mouseover-text-on-jcombobox
+ *      -items
+ */
+public class ComboBoxTooltipRenderer extends DefaultListCellRenderer
+{
+  private static final long serialVersionUID = 1L;
+
+  List<String> tooltips;
+
+  @Override
+  public Component getListCellRendererComponent(JList list, Object value,
+          int index, boolean isSelected, boolean cellHasFocus)
+  {
+
+    JComponent comp = (JComponent) super.getListCellRendererComponent(list,
+            value, index, isSelected, cellHasFocus);
+
+    if (-1 < index && null != value && null != tooltips)
+    {
+      list.setToolTipText(tooltips.get(index));
+    }
+    return comp;
+  }
+
+  public void setTooltips(List<String> tips)
+  {
+    this.tooltips = tips;
+  }
+}