Implemented task EXT-7156 (Appearance panel: "Wear" button should become disabled and a loading indicator should appear next to the outfit name).

When user presses the "Wear" button in the outfits list, we disable the button and display a perpetual loading indicator until all wearables of the outfit being worn get loaded.

Reviewed by Sergey Litovchuk at https://codereview.productengine.com/secondlife/r/347/

--HG--
branch : product-engine

indra/newview/llagentwearables.cpp

@@ -1164,6 +1164,7 @@ void LLAgentWearables::createStandardWearablesAllDone()
 
 	mWearablesLoaded = TRUE; 
 	checkWearablesLoaded();
+	mLoadedSignal();
 	
 	updateServer();
 
@@ -1567,6 +1568,7 @@ void LLAgentWearables::setWearableOutfit(const LLInventoryItem::item_array_t& it
 	// Start rendering & update the server
 	mWearablesLoaded = TRUE; 
 	checkWearablesLoaded();
+	mLoadedSignal();
 	queryWearableCache();
 	updateServer();
 
@@ -2012,6 +2014,10 @@ BOOL LLAgentWearables::areWearablesLoaded() const
 void LLAgentWearables::updateWearablesLoaded()
 {
 	mWearablesLoaded = (itemUpdatePendingCount()==0);
+	if (mWearablesLoaded)
+	{
+		mLoadedSignal();
+	}
 }
 
 bool LLAgentWearables::canWearableBeRemoved(const LLWearable* wearable) const
@@ -2091,3 +2097,8 @@ void LLAgentWearables::populateMyOutfitsFolder(void)
 		outfits->done();
 	}
 }
+
+boost::signals2::connection LLAgentWearables::addLoadedCallback(loaded_callback_t cb)
+{
+	return mLoadedSignal.connect(cb);
+}

indra/newview/llagentwearables.h

@@ -208,6 +208,17 @@ public:
 	BOOL			itemUpdatePending(const LLUUID& item_id) const;
 	U32				itemUpdatePendingCount() const;
 
+	//--------------------------------------------------------------------
+	// Signals
+	//--------------------------------------------------------------------
+public:
+	typedef boost::function<void()>			loaded_callback_t;
+	typedef boost::signals2::signal<void()>	loaded_signal_t;
+	boost::signals2::connection				addLoadedCallback(loaded_callback_t cb);
+
+private:
+	loaded_signal_t							mLoadedSignal; // emitted when all agent wearables get loaded
+
 	//--------------------------------------------------------------------
 	// Member variables
 	//--------------------------------------------------------------------

indra/newview/llpaneloutfitsinventory.cpp

@@ -77,6 +77,7 @@ LLPanelOutfitsInventory::LLPanelOutfitsInventory() :
 {
 	mSavedFolderState = new LLSaveFolderState();
 	mSavedFolderState->setApply(FALSE);
+	gAgentWearables.addLoadedCallback(boost::bind(&LLPanelOutfitsInventory::onWearablesLoaded, this));
 }
 
 LLPanelOutfitsInventory::~LLPanelOutfitsInventory()
@@ -190,6 +191,7 @@ void LLPanelOutfitsInventory::onWearButtonClick()
 	if (!isCOFPanelActive())
 	{
 		mMyOutfitsPanel->performAction("replaceoutfit");
+		setWearablesLoading(true);
 	}
 	else
 	{
@@ -642,3 +644,19 @@ BOOL LLPanelOutfitsInventory::isCOFPanelActive() const
 {
 	return (childGetVisibleTab("appearance_tabs")->getName() == COF_TAB_NAME);
 }
+
+void LLPanelOutfitsInventory::setWearablesLoading(bool val)
+{
+	mListCommands->childSetEnabled("wear_btn", !val);
+
+	llassert(mParent);
+	if (mParent)
+	{
+		mParent->setWearablesLoading(val);
+	}
+}
+
+void LLPanelOutfitsInventory::onWearablesLoaded()
+{
+	setWearablesLoading(false);
+}

indra/newview/llpaneloutfitsinventory.h

@@ -123,6 +123,8 @@ protected:
 	void onCustomAction(const LLSD& command_name);
 	bool handleDragAndDropToTrash(BOOL drop, EDragAndDropType cargo_type, EAcceptance* accept);
 	bool hasItemsSelected();
+	void setWearablesLoading(bool val);
+	void onWearablesLoaded();
 private:
 	LLPanel*					mListCommands;
 	LLMenuGL*					mMenuGearDefault;

indra/newview/llsidepanelappearance.cpp

@@ -439,3 +439,9 @@ void LLSidepanelAppearance::inventoryFetched()
 {
 	mNewOutfitBtn->setEnabled(true);
 }
+
+void LLSidepanelAppearance::setWearablesLoading(bool val)
+{
+	childSetVisible("wearables_loading_indicator", val);
+	childSetVisible("edit_outfit_btn", !val);
+}

indra/newview/llsidepanelappearance.h

@@ -65,6 +65,7 @@ public:
 
 	void showOutfitsInventoryPanel();
 	void showOutfitEditPanel();
+	void setWearablesLoading(bool val);
 
 private:
 	void onFilterEdit(const std::string& search_string);

indra/newview/skins/default/xui/en/sidepanel_appearance.xml

@@ -94,6 +94,14 @@ width="333">
       name="edit_outfit_btn"
       top="7"
       width="30" />
+      <loading_indicator
+      follows="left|top"
+      height="24"
+      layout="topleft"
+      left="268"
+      name="wearables_loading_indicator"
+      top="6"
+      width="24" />
    </panel>
    <filter_editor
    height="23"