refactoring

* separated disableOkActions created for start edit property change event;
* clarifying comment added;
* enableOkActions method renamed to updateOkActions with appropriate logic moved inside

platform/dvcs-impl/src/com/intellij/dvcs/push/PushController.java

@@ -88,8 +88,12 @@ public class PushController implements Disposable {
     myPushLog.getTree().addPropertyChangeListener(PushLogTreeUtil.EDIT_MODE_PROP, new PropertyChangeListener() {
       @Override
       public void propertyChange(PropertyChangeEvent evt) {
+        // when user starts edit we need to force disable ok actions, because tree.isEditing() still false;
+        // after editing completed okActions will be enabled automatically by dialog validation
         Boolean isEditMode = (Boolean)evt.getNewValue();
-        myDialog.enableOkActions(!isEditMode && isPushAllowed());
+        if (isEditMode) {
+          myDialog.disableOkActions();
+        }
       }
     });
     startLoadingCommits();
@@ -234,7 +238,7 @@ public class PushController implements Disposable {
 
       @Override
       public void onSelectionChanged(boolean isSelected) {
-        myDialog.enableOkActions(isPushAllowed());
+        myDialog.updateOkActions();
         if (isSelected) {
           boolean forceLoad = myExcludedRepositoryRoots.remove(model.getRepository().getRoot().getPath());
           if (!model.hasCommitInfo() && (forceLoad || !model.getSupport().shouldRequestIncomingChangesForNotCheckedRepositories())) {
@@ -399,7 +403,7 @@ public class PushController implements Disposable {
             if (shouldBeSelected) { // never remove selection; initially all checkboxes are not selected
               node.setChecked(true);
             }
-            myDialog.enableOkActions(isPushAllowed());
+            myDialog.updateOkActions();
           }
         });
       }

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

@@ -52,7 +52,7 @@ public class VcsPushDialog extends DialogWrapper {
     myListPanel = myController.getPushPanelLog();
 
     init();
-    enableOkActions(myController.isPushAllowed());
+    updateOkActions();
     setOKButtonText("Push");
     setOKButtonMnemonic('P');
     setTitle("Push Commits");
@@ -78,7 +78,7 @@ public class VcsPushDialog extends DialogWrapper {
   @Nullable
   @Override
   protected ValidationInfo doValidate() {
-    enableOkActions(myController.isPushAllowed());
+    updateOkActions();
     return null;
   }
 
@@ -101,6 +101,10 @@ public class VcsPushDialog extends DialogWrapper {
     return actions.toArray(new Action[actions.size()]);
   }
 
+  private boolean canPush() {
+    return myController.isPushAllowed();
+  }
+
   private boolean canForcePush() {
     return myController.isForcePushEnabled() && myController.getProhibitedTarget() == null;
   }
@@ -121,11 +125,13 @@ public class VcsPushDialog extends DialogWrapper {
   protected String getHelpId() {
     return ID;
   }
-  public void enableOkActions(boolean isEnabled) {
-    myPushAction.setEnabled(isEnabled);
+
+  public void updateOkActions() {
+    boolean canPush = canPush();
+    myPushAction.setEnabled(canPush);
     if (myForcePushAction != null) {
       boolean canForcePush = canForcePush();
-      myForcePushAction.setEnabled(isEnabled && canForcePush);
+      myForcePushAction.setEnabled(canPush && canForcePush);
       String tooltip = null;
       if (!canForcePush) {
         PushTarget target = myController.getProhibitedTarget();
@@ -137,6 +143,10 @@ public class VcsPushDialog extends DialogWrapper {
     }
   }
 
+  public void disableOkActions() {
+    myPushAction.setEnabled(false);
+  }
+
   @Nullable
   public VcsPushOptionValue getAdditionalOptionValue(@NotNull PushSupport support) {
     VcsPushOptionsPanel panel = myAdditionalPanels.get(support);