clickable links in tooltips

java/java-impl/src/com/intellij/codeInsight/daemon/impl/JavaClassTooltipLinkHandler.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2000-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.codeInsight.daemon.impl;
+
+import com.intellij.codeInsight.highlighting.TooltipLinkHandler;
+import com.intellij.codeInsight.navigation.NavigationUtil;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.project.Project;
+import com.intellij.psi.JavaPsiFacade;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.search.GlobalSearchScope;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author Dmitry Avdeev
+ */
+public class JavaClassTooltipLinkHandler extends TooltipLinkHandler {
+
+  @Override
+  public boolean handleLink(@NotNull String refSuffix, @NotNull Editor editor) {
+    Project project = editor.getProject();
+    if (project == null) return false;
+    PsiElement aClass = JavaPsiFacade.getInstance(project).findClass(refSuffix, GlobalSearchScope.allScope(project));
+    if (aClass == null) return false;
+    NavigationUtil.activateFileWithPsiElement(aClass);
+    return true;
+  }
+}

java/java-impl/src/com/intellij/codeInsight/daemon/impl/MarkerType.java

@@ -181,7 +181,7 @@ public class MarkerType {
     Arrays.sort(overridings, comparator);
 
     String start = isAbstract ? DaemonBundle.message("method.is.implemented.header") : DaemonBundle.message("method.is.overriden.header");
-    @NonNls String pattern = "    {1}";
+    @NonNls String pattern = "&nbsp;&nbsp;&nbsp;&nbsp;<a href=\"#javaClass/{1}\">{1}</a>";
     return GutterIconTooltipHelper.composeText(overridings, start, pattern);
   }
 
@@ -273,7 +273,7 @@ public class MarkerType {
     String start = aClass.isInterface()
                    ? DaemonBundle.message("interface.is.implemented.by.header")
                    : DaemonBundle.message("class.is.subclassed.by.header");
-    @NonNls String pattern = "&nbsp;&nbsp;&nbsp;&nbsp;{0}";
+    @NonNls String pattern = "&nbsp;&nbsp;&nbsp;&nbsp;<a href=\"#javaClass/{0}\">{0}</a>";
     return GutterIconTooltipHelper.composeText(subclasses, start, pattern);
   }
 

platform/platform-resources-en/src/messages/DaemonBundle.properties

@@ -3,11 +3,11 @@ method.is.overridden.too.many=Is overridden in subclasses
 interface.is.implemented.too.many=Has implementations
 class.is.subclassed.too.many=Has subclasses
 
-method.implements=Implements method in ''{1}''
-method.implements.in=Implements method ''{0}'' in ''{1}''
+method.implements=Implements method in <a href="#javaClass/{1}">{1}</a>
+method.implements.in=Implements method ''{0}'' in <a href="#javaClass/{1}">{1}</a>
 
-method.overrides=Overrides method in ''{1}''
-method.overrides.in=Overrides method ''{0}'' in ''{1}''
+method.overrides=Overrides method in <a href="#javaClass/{1}">{1}</a>
+method.overrides.in=Overrides method ''{0}'' in <a href="#javaClass/{1}">{1}</a>
 
 analysis.hasnot.been.run=No analysis has been performed
 

resources/src/META-INF/IdeaPlugin.xml

@@ -1040,6 +1040,7 @@
     <codeInsight.gotoSuper language="JAVA" implementationClass="com.intellij.codeInsight.navigation.JavaGotoSuperHandler"/>
     <codeInsight.gotoSuper language="SPI" implementationClass="com.intellij.spi.SPIGotoSuperHandler"/>
     <codeInsight.lineMarkerProvider language="JAVA" implementationClass="com.intellij.codeInsight.daemon.impl.JavaLineMarkerProvider"/>
+    <codeInsight.linkHandler prefix="#javaClass/" handlerClass="com.intellij.codeInsight.daemon.impl.JavaClassTooltipLinkHandler"/>
     <codeInsight.lineMarkerProvider language="JAVA" implementationClass="com.intellij.codeInsight.daemon.impl.IconLineMarkerProvider"/>
     <codeInsight.lineMarkerProvider language="JAVA" implementationClass="com.intellij.codeInsight.daemon.impl.RecursiveCallLineMarkerProvider"/>
     <colorProvider implementation="com.intellij.codeInsight.daemon.impl.JavaColorProvider" />