Merge

1 files changed, 23 insertions, 6 deletions

diff --git a/indra/newview/llsidetray.cpp b/indra/newview/llsidetray.cpp
index 3bc3959e0b..aef665a35c 100644
--- a/indra/newview/llsidetray.cpp
+++ b/indra/newview/llsidetray.cpp
@@ -561,7 +561,7 @@ BOOL LLSideTray::postBuild()
 	{
 		if ((*it).channel)
 		{
-			getCollapseSignal().connect(boost::bind(&LLScreenChannelBase::resetPositionAndSize, (*it).channel, _2));
+			setVisibleWidthChangeCallback(boost::bind(&LLScreenChannelBase::resetPositionAndSize, (*it).channel));
 		}
 	}
 
@@ -980,9 +980,6 @@ void LLSideTray::reflectCollapseChange()
 	}
 
 	gFloaterView->refresh();
-	
-	LLSD new_value = mCollapsed;
-	mCollapseSignal(this,new_value);
 }
 
 void LLSideTray::arrange()
@@ -1262,9 +1259,29 @@ bool		LLSideTray::isPanelActive(const std::string& panel_name)
 void	LLSideTray::updateSidetrayVisibility()
 {
 	// set visibility of parent container based on collapsed state
-	if (getParent())
+	LLView* parent = getParent();
+	if (parent)
 	{
-		getParent()->setVisible(!mCollapsed && !gAgentCamera.cameraMouselook());
+		bool old_visibility = parent->getVisible();
+		bool new_visibility = !mCollapsed && !gAgentCamera.cameraMouselook();
+
+		if (old_visibility != new_visibility)
+		{
+			parent->setVisible(new_visibility);
+
+			// Signal change of visible width.
+			llinfos << "Visible: " << new_visibility << llendl;
+			mVisibleWidthChangeSignal(this, new_visibility);
+		}
 	}
 }
 
+S32 LLSideTray::getVisibleWidth()
+{
+	return (isInVisibleChain() && !mCollapsed) ? getRect().getWidth() : 0;
+}
+
+void LLSideTray::setVisibleWidthChangeCallback(const commit_signal_t::slot_type& cb)
+{
+	mVisibleWidthChangeSignal.connect(cb);
+}