Fix a texture manager crash

[platform/core/uifw/dali-toolkit.git] / dali-toolkit / internal / visuals / texture-manager-impl.cpp

diff --git a/dali-toolkit/internal/visuals/texture-manager-impl.cpp b/dali-toolkit/internal/visuals/texture-manager-impl.cpp
index 64bbb5b..5e0b506 100644 (file)
--- a/dali-toolkit/internal/visuals/texture-manager-impl.cpp
+++ b/dali-toolkit/internal/visuals/texture-manager-impl.cpp
@@ -819,6 +819,8 @@ void TextureManager::QueueLoadTexture( TextureInfo& textureInfo, TextureUploadOb
 {
   auto textureId = textureInfo.textureId;
   mLoadQueue.PushBack( LoadQueueElement( textureId, observer) );
+
+  observer->DestructionSignal().Connect( this, &TextureManager::ObserverDestroyed );
 }
 
 void TextureManager::LoadTexture( TextureInfo& textureInfo, TextureUploadObserver* observer )
@@ -853,6 +855,11 @@ void TextureManager::ProcessQueuedTextures()
 {
   for( auto&& element : mLoadQueue )
   {
+    if( !element.mObserver )
+    {
+      continue;
+    }
+
     int cacheIndex = GetCacheIndexFromId( element.mTextureId );
     if( cacheIndex != INVALID_CACHE_INDEX )
     {
@@ -1312,6 +1319,15 @@ void TextureManager::ObserverDestroyed( TextureUploadObserver* observer )
       }
     }
   }
+
+  // Remove element from the LoadQueue
+  for( auto&& element : mLoadQueue )
+  {
+    if( element.mObserver == observer )
+    {
+      element.mObserver = nullptr;
+    }
+  }
 }