EXT-7565 FIXED Would be nice to preserve selection while switching between folder/list view modes

- Created callback called 'SaveSelecton' (which preserves selection while switching between folder/list view modes) for folder/list view modes buttons in LLPanelOutfitEdit.

- Added 'scrollToShowFirstSelectedItem' method in the LLFlatListView which scrools and shows the first selected item in case multiselection.

- It's possible to set selection for flat list view items before list is build. The result is that any items will be selected. To get rid of it:
   1. Overrided LLFlatListView::selectItemByValue method in LLInventoryItemsList so that if list is not created yet, items ids are saved to the vector.
   2. Added 'LLInventoryItemsList::updateSelection()' method which selects items with ids from that vector when list is created.

- A little refactoring: moved funcionality of updating WearablesPanel's verb buttons to the separate method called LLPanelOutfitEdit::updateWearablesPanelVerbButtons() to made code more readable and self-explanatory

Reviewed by Vadim Savchuk and Neal Orman at https://codereview.productengine.com/secondlife/r/579/

--HG--
branch : product-engine

1 files changed, 7 insertions, 0 deletions

diff --git a/indra/newview/llinventoryitemslist.h b/indra/newview/llinventoryitemslist.h
index 71c7b6a675..5800111f46 100644
--- a/indra/newview/llinventoryitemslist.h
+++ b/indra/newview/llinventoryitemslist.h
@@ -68,6 +68,10 @@ public:
 	 */
 	void setForceRefresh(bool force_refresh){ mForceRefresh = force_refresh; }
 
+	virtual bool selectItemByValue(const LLSD& value, bool select = true);
+
+	void updateSelection();
+
 	/**
 	 * Idle routine used to refresh the list regardless of the current list
 	 * visibility, unlike draw() which is called only for the visible list.
@@ -104,6 +108,9 @@ protected:
 private:
 	uuid_vec_t mIDs; // IDs of items that were added in refreshList().
 					 // Will be used in refresh() to determine added and removed ids
+
+	uuid_vec_t mSelectTheseIDs; // IDs that will be selected if list is not loaded till now
+
 	bool mNeedsRefresh;
 
 	bool mForceRefresh;