Reduce folderview menu bloat via lazy creation on right click

2 files changed, 45 insertions, 16 deletions

diff --git a/indra/llui/llfolderview.cpp b/indra/llui/llfolderview.cpp
index ea2ca68e47..e1869e8125 100644
--- a/indra/llui/llfolderview.cpp
+++ b/indra/llui/llfolderview.cpp
@@ -163,6 +163,7 @@ LLFolderView::LLFolderView(const Params& p)
 :	LLFolderViewFolder(p),
 	mScrollContainer( NULL ),
 	mPopupMenuHandle(),
+	mMenuFileName(p.options_menu),
 	mAllowMultiSelect(p.allow_multiselect),
 	mAllowDrag(p.allow_drag),
 	mShowEmptyMessage(p.show_empty_message),
@@ -182,6 +183,7 @@ LLFolderView::LLFolderView(const Params& p)
 	mMinWidth(0),
 	mDragAndDropThisFrame(FALSE),
 	mCallbackRegistrar(NULL),
+	mEnableRegistrar(NULL),
 	mUseEllipses(p.use_ellipses),
 	mDraggingOverItem(NULL),
 	mStatusTextBox(NULL),
@@ -244,17 +246,6 @@ LLFolderView::LLFolderView(const Params& p)
 	mStatusTextBox->setFollowsTop();
 	addChild(mStatusTextBox);
 
-
-	// make the popup menu available
-	llassert(LLMenuGL::sMenuContainer != NULL);
-	LLMenuGL* menu = LLUICtrlFactory::getInstance()->createFromFile<LLMenuGL>(p.options_menu, LLMenuGL::sMenuContainer, LLMenuHolderGL::child_registry_t::instance());
-	if (!menu)
-	{
-		menu = LLUICtrlFactory::getDefaultWidget<LLMenuGL>("inventory_menu");
-	}
-	menu->setBackgroundColor(LLUIColorTable::instance().getColor("MenuPopupBgColor"));
-	mPopupMenuHandle = menu->getHandle();
-
 	mViewModelItem->openItem();
 
 	mAreChildrenInited = true; // root folder is a special case due to not being loaded normally, assume that it's inited.
@@ -276,6 +267,7 @@ LLFolderView::~LLFolderView( void )
 	mStatusTextBox = NULL;
 
 	if (mPopupMenuHandle.get()) mPopupMenuHandle.get()->die();
+	mPopupMenuHandle.markDead();
 
 	mAutoOpenItems.removeAllNodes();
 	clearSelection();
@@ -1438,22 +1430,56 @@ BOOL LLFolderView::handleRightMouseDown( S32 x, S32 y, MASK mask )
 	BOOL handled = childrenHandleRightMouseDown(x, y, mask) != NULL;
 	S32 count = mSelectedItems.size();
 
-	LLMenuGL* menu = (LLMenuGL*)mPopupMenuHandle.get();
+	LLMenuGL* menu = static_cast<LLMenuGL*>(mPopupMenuHandle.get());
+	if (!menu)
+	{
+		if (mCallbackRegistrar)
+		{
+			mCallbackRegistrar->pushScope();
+		}
+		if (mEnableRegistrar)
+		{
+			mEnableRegistrar->pushScope();
+		}
+		llassert(LLMenuGL::sMenuContainer != NULL);
+		menu = LLUICtrlFactory::getInstance()->createFromFile<LLMenuGL>(mMenuFileName, LLMenuGL::sMenuContainer, LLMenuHolderGL::child_registry_t::instance());
+		if (!menu)
+		{
+			menu = LLUICtrlFactory::getDefaultWidget<LLMenuGL>("inventory_menu");
+		}
+		menu->setBackgroundColor(LLUIColorTable::instance().getColor("MenuPopupBgColor"));
+		mPopupMenuHandle = menu->getHandle();
+		if (mEnableRegistrar)
+		{
+			mEnableRegistrar->popScope();
+		}
+		if (mCallbackRegistrar)
+		{
+			mCallbackRegistrar->popScope();
+		}
+	}
 	bool hide_folder_menu = mSuppressFolderMenu && isFolderSelected();
-	if ((handled
-		&& ( count > 0 && (hasVisibleChildren()) ) // show menu only if selected items are visible
-		&& menu ) &&
+	if (menu && (handled
+		&& ( count > 0 && (hasVisibleChildren()) )) && // show menu only if selected items are visible
 		!hide_folder_menu)
 	{
 		if (mCallbackRegistrar)
         {
 			mCallbackRegistrar->pushScope();
         }
+		if (mEnableRegistrar)
+		{
+			mEnableRegistrar->pushScope();
+		}
 
 		updateMenuOptions(menu);
 	   
 		menu->updateParent(LLMenuGL::sMenuContainer);
 		LLMenuGL::showPopup(this, menu, x, y);
+		if (mEnableRegistrar)
+		{
+			mEnableRegistrar->popScope();
+		}
 		if (mCallbackRegistrar)
         {
 			mCallbackRegistrar->popScope();
@@ -1531,7 +1557,7 @@ void LLFolderView::deleteAllChildren()
 {
 	closeRenamer();
 	if (mPopupMenuHandle.get()) mPopupMenuHandle.get()->die();
-	mPopupMenuHandle = LLHandle<LLView>();
+	mPopupMenuHandle.markDead();
 	mScrollContainer = NULL;
 	mRenameItem = NULL;
 	mRenamer = NULL;
diff --git a/indra/llui/llfolderview.h b/indra/llui/llfolderview.h
index 6bb5e6c02e..7dfa04828a 100644
--- a/indra/llui/llfolderview.h
+++ b/indra/llui/llfolderview.h
@@ -235,6 +235,7 @@ public:
 	bool showItemLinkOverlays() { return mShowItemLinkOverlays; }
 
 	void setCallbackRegistrar(LLUICtrl::CommitCallbackRegistry::ScopedRegistrar* registrar) { mCallbackRegistrar = registrar; }
+	void setEnableRegistrar(LLUICtrl::EnableCallbackRegistry::ScopedRegistrar* registrar) { mEnableRegistrar = registrar; }
 
 	LLPanel* getParentPanel() { return mParentPanel.get(); }
 	// DEBUG only
@@ -272,6 +273,7 @@ protected:
 
 protected:
 	LLHandle<LLView>					mPopupMenuHandle;
+	std::string						mMenuFileName;
 	
 	selected_items_t				mSelectedItems;
 	bool							mKeyboardSelection,
@@ -327,6 +329,7 @@ protected:
 	LLFolderViewItem*				mDraggingOverItem; // See EXT-719
 
 	LLUICtrl::CommitCallbackRegistry::ScopedRegistrar* mCallbackRegistrar;
+	LLUICtrl::EnableCallbackRegistry::ScopedRegistrar* mEnableRegistrar;
 	
 public:
 	static F32 sAutoOpenTime;