From 2df4f812ba4117fdd9922972b04544ddc8475917 Mon Sep 17 00:00:00 2001
From: Dennis Ushakov <dennis.ushakov@gmail.com>
Date: Wed, 23 Jan 2019 14:47:12 +0300
Subject: [PATCH] add tooltip support for icon tag

---
 .../codeInsight/documentation/DocumentationComponent.java    | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java
index 3de2928e8133..6b24a804ee35 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java
@@ -290,6 +290,11 @@ public class DocumentationComponent extends JPanel implements Disposable, DataPr
                     }
                   }
 
+                  @Override
+                  public String getToolTipText(float x, float y, Shape allocation) {
+                     return (String)getElement().getAttributes().getAttribute(HTML.Attribute.ALT);
+                  }
+
                   @Override
                   public void paint(Graphics g, Shape allocation) {
                     viewIcon.paintIcon(null, g, allocation.getBounds().x, allocation.getBounds().y - 4);