IDEA-132467 apply target branch modification with Enter or mouse interruption

* selection listener from WideSelectionTreeUi modified not to stop edit mode when mouse pressed/release, because BaseTreeUi managed this situation himself according to appropriate flags;
(if mouse pressed, then BaseUi starts edit mode, and WideUi stops it immediately - this was strange)
* validation added in editor listener

platform/dvcs-impl/src/com/intellij/dvcs/push/ui/PushLog.java

@@ -127,7 +127,15 @@ public class PushLog extends JPanel implements TypeSafeDataProvider {
       public void editingStopped(ChangeEvent e) {
         DefaultMutableTreeNode node = (DefaultMutableTreeNode)myTree.getLastSelectedPathComponent();
         if (node != null && node instanceof EditableTreeNode) {
-          ((EditableTreeNode)node).fireOnChange();
+          JComponent editedComponent = (JComponent)node.getUserObject();
+          InputVerifier verifier = editedComponent.getInputVerifier();
+          if (verifier != null && !verifier.verify(editedComponent)) {
+            // if invalid and interrupted, then revert
+            ((EditableTreeNode)node).fireOnCancel();
+          }
+          else {
+            ((EditableTreeNode)node).fireOnChange();
+          }
         }
         myTree.firePropertyChange(PushLogTreeUtil.EDIT_MODE_PROP, true, false);
       }
@@ -141,6 +149,8 @@ public class PushLog extends JPanel implements TypeSafeDataProvider {
         myTree.firePropertyChange(PushLogTreeUtil.EDIT_MODE_PROP, true, false);
       }
     });
+    // complete editing when interrupt
+    myTree.setInvokesStopCellEditing(true);
     myTree.setRootVisible(false);
     TreeUtil.collapseAll(myTree, 1);
     final VcsBranchEditorListener linkMouseListener = new VcsBranchEditorListener(myTreeCellRenderer);

platform/util/src/com/intellij/util/ui/tree/WideSelectionTreeUI.java

@@ -122,11 +122,6 @@ public class WideSelectionTreeUI extends BasicTreeUI {
     private void handle(MouseEvent e) {
       final JTree tree = (JTree)e.getSource();
       if (SwingUtilities.isLeftMouseButton(e) && !e.isPopupTrigger()) {
-        // if we can't stop any ongoing editing, do nothing
-        if (isEditing(tree) && tree.getInvokesStopCellEditing() && !stopEditing(tree)) {
-          return;
-        }
-
         final TreePath pressedPath = getClosestPathForLocation(tree, e.getX(), e.getY());
         if (pressedPath != null) {
           Rectangle bounds = getPathBounds(tree, pressedPath);