From 60c3bffe5c893a08b8e4e39d22185255049fd8b4 Mon Sep 17 00:00:00 2001
From: Kirill Likhodedov <Kirill.Likhodedov@gmail.com>
Date: Sat, 22 Mar 2014 17:17:50 +0400
Subject: [PATCH] [log] IDEA-122300 Show full path in structure filter tooltip

If there are multiple files selected, show them all, but don't let
the tooltip to grow to much, so don't show more than 10 lines.
---
 .../filter/StructureFilterPopupComponent.java | 24 +++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/filter/StructureFilterPopupComponent.java b/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/filter/StructureFilterPopupComponent.java
index 6925e52a67f8..3ac9464002bc 100644
--- a/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/filter/StructureFilterPopupComponent.java
+++ b/platform/vcs-log/impl/src/com/intellij/vcs/log/ui/filter/StructureFilterPopupComponent.java
@@ -22,6 +22,7 @@ import com.intellij.openapi.project.DumbAwareAction;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.util.Function;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.vcs.log.VcsLogStructureFilter;
 import com.intellij.vcs.log.data.VcsLogStructureFilterImpl;
@@ -32,6 +33,7 @@ import org.jetbrains.annotations.Nullable;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.List;
 
 class StructureFilterPopupComponent extends FilterPopupComponent<VcsLogStructureFilter> {
 
@@ -62,13 +64,31 @@ class StructureFilterPopupComponent extends FilterPopupComponent<VcsLogStructure
     }
     else if (files.size() == 1) {
       VirtualFile file = files.iterator().next();
-      setValue(StringUtil.shortenPathWithEllipsis(file.getPresentableUrl(), FILTER_LABEL_LENGTH));
+      setValue(StringUtil.shortenPathWithEllipsis(file.getPresentableUrl(), FILTER_LABEL_LENGTH), getTooltip(files));
     }
     else {
-      setValue(files.size() + " items");
+      setValue(files.size() + " items", getTooltip(files));
     }
   }
 
+  @NotNull
+  private static String getTooltip(@NotNull Collection<VirtualFile> files) {
+    List<VirtualFile> filesToDisplay = new ArrayList<VirtualFile>(files);
+    if (files.size() > 10) {
+      filesToDisplay = filesToDisplay.subList(0, 10);
+    }
+    String tooltip = StringUtil.join(filesToDisplay, new Function<VirtualFile, String>() {
+      @Override
+      public String fun(VirtualFile file) {
+        return file.getPresentableUrl();
+      }
+    }, "\n");
+    if (files.size() > 10) {
+      tooltip += "\n...";
+    }
+    return tooltip;
+  }
+
   @NotNull
   private static <T> Collection<T> notNullize(@Nullable Collection<T> items) {
     return items != null ? items : Collections.<T>emptyList();