Fixed redundant notifications in BM

android/jni/com/mapswithme/maps/bookmarks/data/BookmarkManager.cpp

@@ -532,4 +532,18 @@ Java_com_mapswithme_maps_bookmarks_data_BookmarkManager_nativeCancelRestoring(
 {
   frm()->GetBookmarkManager().CancelCloudRestoring();
 }
+
+JNIEXPORT void JNICALL
+Java_com_mapswithme_maps_bookmarks_data_BookmarkManager_nativeSetNotificationsEnabled(
+        JNIEnv * env, jobject thiz, jboolean enabled)
+{
+  frm()->GetBookmarkManager().SetNotificationsEnabled(static_cast<bool>(enabled));
+}
+
+JNIEXPORT jboolean JNICALL
+Java_com_mapswithme_maps_bookmarks_data_BookmarkManager_nativeAreNotificationsEnabled(
+        JNIEnv * env, jobject thiz)
+{
+  return static_cast<jboolean>(frm()->GetBookmarkManager().AreNotificationsEnabled());
+}
 }  // extern "C"

android/src/com/mapswithme/maps/bookmarks/BookmarkCategoriesActivity.java

@@ -1,14 +1,38 @@
 package com.mapswithme.maps.bookmarks;
 
+import android.support.annotation.CallSuper;
 import android.support.annotation.NonNull;
 import android.support.annotation.StyleRes;
 import android.support.v4.app.Fragment;
 
 import com.mapswithme.maps.base.BaseToolbarActivity;
+import com.mapswithme.maps.bookmarks.data.BookmarkManager;
 import com.mapswithme.util.ThemeUtils;
 
 public class BookmarkCategoriesActivity extends BaseToolbarActivity
 {
+  @CallSuper
+  @Override
+  public void onResume()
+  {
+    super.onResume();
+
+    // Disable all notifications in BM on appearance of this activity.
+    // It allows to significantly improve performance in case of bookmarks
+    // modification. All notifications will be sent on activity's disappearance.
+    BookmarkManager.INSTANCE.setNotificationsEnabled(false);
+  }
+
+  @CallSuper
+  @Override
+  public void onPause()
+  {
+    // Allow to send all notifications in BM.
+    BookmarkManager.INSTANCE.setNotificationsEnabled(true);
+
+    super.onPause();
+  }
+
   @Override
   @StyleRes
   public int getThemeResourceId(@NonNull String theme)

android/src/com/mapswithme/maps/bookmarks/BookmarkListActivity.java

@@ -1,14 +1,38 @@
 package com.mapswithme.maps.bookmarks;
 
+import android.support.annotation.CallSuper;
 import android.support.annotation.NonNull;
 import android.support.annotation.StyleRes;
 import android.support.v4.app.Fragment;
 
 import com.mapswithme.maps.base.BaseToolbarActivity;
+import com.mapswithme.maps.bookmarks.data.BookmarkManager;
 import com.mapswithme.util.ThemeUtils;
 
 public class BookmarkListActivity extends BaseToolbarActivity
 {
+  @CallSuper
+  @Override
+  public void onResume()
+  {
+    super.onResume();
+
+    // Disable all notifications in BM on appearance of this activity.
+    // It allows to significantly improve performance in case of bookmarks
+    // modification. All notifications will be sent on activity's disappearance.
+    BookmarkManager.INSTANCE.setNotificationsEnabled(false);
+  }
+
+  @CallSuper
+  @Override
+  public void onPause()
+  {
+    // Allow to send all notifications in BM.
+    BookmarkManager.INSTANCE.setNotificationsEnabled(true);
+
+    super.onPause();
+  }
+
   @Override
   @StyleRes
   public int getThemeResourceId(@NonNull String theme)

android/src/com/mapswithme/maps/bookmarks/data/BookmarkManager.java

@@ -393,6 +393,16 @@ public enum BookmarkManager
     nativeCancelRestoring();
   }
 
+  public void setNotificationsEnabled(boolean enabled)
+  {
+    nativeSetNotificationsEnabled(enabled);
+  }
+
+  public boolean areNotificationsEnabled()
+  {
+    return nativeAreNotificationsEnabled();
+  }
+
   private native int nativeGetCategoriesCount();
 
   private native int nativeGetCategoryPositionById(long catId);
@@ -477,6 +487,10 @@ public enum BookmarkManager
 
   private static native void nativeCancelRestoring();
 
+  private static native void nativeSetNotificationsEnabled(boolean enabled);
+
+  private static native boolean nativeAreNotificationsEnabled();
+
   public interface BookmarksLoadingListener
   {
     void onBookmarksLoadingStarted();

iphone/Maps/Bookmarks/BookmarksVC.mm

@@ -367,6 +367,24 @@
   [super viewWillDisappear:animated];
 }
 
+- (void)viewDidAppear:(BOOL)animated
+{
+  // Disable all notifications in BM on appearance of this view.
+  // It allows to significantly improve performance in case of bookmarks
+  // modification. All notifications will be sent on controller's disappearance.
+  [MWMBookmarksManager setNotificationsEnabled: NO];
+  
+  [super viewDidAppear:animated];
+}
+
+- (void)viewDidDisappear:(BOOL)animated
+{
+  // Allow to send all notifications in BM.
+  [MWMBookmarksManager setNotificationsEnabled: YES];
+  
+  [super viewDidDisappear:animated];
+}
+
 - (void)sendBookmarksWithExtension:(NSString *)fileExtension andType:(NSString *)mimeType andFile:(NSString *)filePath andCategory:(NSString *)catName
 {
   MWMMailViewController * mailVC = [[MWMMailViewController alloc] init];

iphone/Maps/Bookmarks/Categories/BMCView/BMCViewController.swift

@@ -42,19 +42,20 @@ final class BMCViewController: MWMViewController {
 
   override func viewDidAppear(_ animated: Bool) {
     super.viewDidAppear(animated)
+    
     // Disable all notifications in BM on appearance of this view.
     // It allows to significantly improve performance in case of bookmarks
     // modification. All notifications will be sent on controller's disappearance.
     viewModel.setNotificationsEnabled(false)
-    viewModel.addToObserverList()
+    
     viewModel.convertAllKMLIfNeeded()
   }
   
   override func viewDidDisappear(_ animated: Bool) {
     super.viewDidDisappear(animated)
+    
     // Allow to send all notifications in BM.
     viewModel.setNotificationsEnabled(true)
-    viewModel.removeFromObserverList()
   }
 
   private func updateCategoryName(category: BMCCategory?) {

iphone/Maps/Bookmarks/Categories/BMCViewModel/BMCDefaultViewModel.swift

@@ -214,6 +214,14 @@ extension BMCDefaultViewModel: BMCViewModel {
   func removeFromObserverList() {
     BM.remove(self)
   }
+  
+  func setNotificationsEnabled(_ enabled: Bool) {
+    BM.setNotificationsEnabled(enabled)
+  }
+  
+  func areNotificationsEnabled() -> Bool {
+    return BM.areNotificationsEnabled()
+  }
 }
 
 extension BMCDefaultViewModel: MWMBookmarksObserver {

iphone/Maps/Core/Bookmarks/MWMBookmarksManager.h

@@ -37,6 +37,9 @@
 
 + (BOOL)areAllCategoriesInvisible;
 
++ (void)setNotificationsEnabled:(BOOL)enabled;
++ (BOOL)areNotificationsEnabled;
+
 - (instancetype)init __attribute__((unavailable("call +manager instead")));
 - (instancetype)copy __attribute__((unavailable("call +manager instead")));
 - (instancetype)copyWithZone:(NSZone *)zone __attribute__((unavailable("call +manager instead")));

iphone/Maps/Core/Bookmarks/MWMBookmarksManager.mm

@@ -359,4 +359,14 @@ NSString * const CloudErrorToString(Cloud::SynchronizationResult result)
   return GetFramework().GetBookmarkManager().AreAllCategoriesInvisible();
 }
 
++ (void)setNotificationsEnabled:(BOOL)enabled
+{
+  GetFramework().GetBookmarkManager().SetNotificationsEnabled(enabled);
+}
+
++ (BOOL)areNotificationsEnabled
+{
+  return GetFramework().GetBookmarkManager().AreNotificationsEnabled();
+}
+
 @end

map/bookmark_manager.cpp

@@ -586,6 +586,9 @@ void BookmarkManager::OnEditSessionClosed()
 void BookmarkManager::NotifyChanges()
 {
   CHECK_THREAD_CHECKER(m_threadChecker, ());
+  if (!m_notificationsEnabled)
+    return;
+
   if (!m_changesTracker.CheckChanges() && !m_firstDrapeNotification)
     return;
 
@@ -1781,6 +1784,23 @@ void BookmarkManager::CancelCloudRestoring()
   m_bookmarkCloud.CancelRestoring();
 }
 
+void BookmarkManager::SetNotificationsEnabled(bool enabled)
+{
+  CHECK_THREAD_CHECKER(m_threadChecker, ());
+  if (m_notificationsEnabled == enabled)
+    return;
+
+  m_notificationsEnabled = enabled;
+  if (m_openedEditSessionsCount == 0)
+    NotifyChanges();
+}
+
+bool BookmarkManager::AreNotificationsEnabled() const
+{
+  CHECK_THREAD_CHECKER(m_threadChecker, ());
+  return m_notificationsEnabled;
+}
+
 void BookmarkManager::EnableTestMode(bool enable)
 {
   UserMarkIdStorage::Instance().EnableTestMode(enable);

map/bookmark_manager.hpp

@@ -265,6 +265,9 @@ public:
   void ApplyCloudRestoring();
   void CancelCloudRestoring();
 
+  void SetNotificationsEnabled(bool enabled);
+  bool AreNotificationsEnabled() const;
+
   /// These functions are public for unit tests only. You shouldn't call them from client code.
   void EnableTestMode(bool enable);
   bool SaveBookmarkCategory(kml::MarkGroupId groupId);
@@ -453,6 +456,7 @@ private:
   bool m_restoreApplying = false;
   bool m_migrationInProgress = false;
   bool m_conversionInProgress = false;
+  bool m_notificationsEnabled = true;
 
   ScreenBase m_viewport;