From 9c2ba90b6b2a93c7d04a38550e1b2869b56f6ec6 Mon Sep 17 00:00:00 2001
From: Sergey Malenkov <sergey.malenkov@jetbrains.com>
Date: Wed, 6 Sep 2017 15:40:45 +0300
Subject: [PATCH] introduce temporary API to migrate a project view tree to a
 new model
 AsyncTreeModel.setRootImmediately(StructureTreeModel.getRootImmediately)

---
 .../src/com/intellij/ui/tree/AsyncTreeModel.java      | 11 +++++++++++
 .../src/com/intellij/ui/tree/StructureTreeModel.java  | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/platform/platform-impl/src/com/intellij/ui/tree/AsyncTreeModel.java b/platform/platform-impl/src/com/intellij/ui/tree/AsyncTreeModel.java
index 39ac7a411407..309ddb2c121a 100644
--- a/platform/platform-impl/src/com/intellij/ui/tree/AsyncTreeModel.java
+++ b/platform/platform-impl/src/com/intellij/ui/tree/AsyncTreeModel.java
@@ -866,4 +866,15 @@ public final class AsyncTreeModel extends AbstractTreeModel implements Disposabl
       }
     }
   }
+
+  /**
+   * @deprecated do not use
+   */
+  @Deprecated
+  public void setRootImmediately(@NotNull Object object) {
+    Node node = new Node(object, false);
+    node.insertPath(new TreePath(object));
+    tree.root = node;
+    tree.map.put(object, node);
+  }
 }
diff --git a/platform/platform-impl/src/com/intellij/ui/tree/StructureTreeModel.java b/platform/platform-impl/src/com/intellij/ui/tree/StructureTreeModel.java
index 00dd1bbd0072..742d6453d3b3 100644
--- a/platform/platform-impl/src/com/intellij/ui/tree/StructureTreeModel.java
+++ b/platform/platform-impl/src/com/intellij/ui/tree/StructureTreeModel.java
@@ -294,4 +294,15 @@ public class StructureTreeModel extends AbstractTreeModel implements Disposable,
       return child instanceof Node && isNodeChild((Node)child) ? getChildren().indexOf(child) : -1;
     }
   }
+
+  /**
+   * @deprecated do not use
+   */
+  @Deprecated
+  public final Object getRootImmediately() {
+    if (!root.isValid()) {
+      root.set(getValidRoot());
+    }
+    return root.get();
+  }
 }