Reapply "SL-20411 Don't load all thumnails at once for large folders #2"

This reverts commit 05475f8cfab81fe70b87b24031a12465cfbf492e.

1 files changed, 8 insertions, 0 deletions

diff --git a/indra/newview/llthumbnailctrl.h b/indra/newview/llthumbnailctrl.h
index 70f56c429c..f84a583271 100644
--- a/indra/newview/llthumbnailctrl.h
+++ b/indra/newview/llthumbnailctrl.h
@@ -64,16 +64,24 @@ public:
 	virtual ~LLThumbnailCtrl();
 
 	virtual void draw() override;
+    void setVisible(BOOL visible) override;
 
 	virtual void setValue(const LLSD& value ) override;
+    void setInitImmediately(bool val) { mInitImmediately = val; }
     void clearTexture();
     
     virtual BOOL handleHover(S32 x, S32 y, MASK mask) override;
+
+protected:
+    void initImage();
+    void unloadImage();
 	
 private:
     bool mBorderVisible;
     bool mInteractable;
     bool mShowLoadingPlaceholder;
+    bool mInited;
+    bool mInitImmediately;
     std::string mLoadingPlaceholderString;
     LLUUID mImageAssetID;
     LLViewBorder* mBorder;