2 files changed, 22 insertions, 0 deletions
diff --git a/indra/llui/lldockablefloater.cpp b/indra/llui/lldockablefloater.cpp
index 4f5fcddbf4..f9983278d1 100644
--- a/indra/llui/lldockablefloater.cpp
+++ b/indra/llui/lldockablefloater.cpp
@@ -50,6 +50,7 @@ void LLDockableFloater::init(LLDockableFloater* thiz)
 	thiz->setCanDock(true);
 	thiz->setCanMinimize(TRUE);
 	thiz->setOverlapsScreenChannel(false);
+	thiz->mForceDocking = false;
 }
 
 LLDockableFloater::LLDockableFloater(LLDockControl* dockControl,
@@ -81,6 +82,12 @@ LLDockableFloater::~LLDockableFloater()
 
 BOOL LLDockableFloater::postBuild()
 {
+	// Remember we should force docking when the floater is opened for the first time
+	if (mIsDockedStateForcedCallback != NULL && mIsDockedStateForcedCallback())
+	{
+		mForceDocking = true;
+	}
+
 	mDockTongue = LLUI::getUIImage("windows/Flyout_Pointer.png");
 	LLFloater::setDocked(true);
 	return LLView::postBuild();
@@ -134,6 +141,14 @@ void LLDockableFloater::resetInstance()
 
 void LLDockableFloater::setVisible(BOOL visible)
 {
+	// Force docking if requested
+	if (visible && mForceDocking)
+	{
+		setCanDock(true);
+		setDocked(true);
+		mForceDocking = false;
+	}
+
 	if(visible && isDocked())
 	{
 		resetInstance();
diff --git a/indra/llui/lldockablefloater.h b/indra/llui/lldockablefloater.h
index 2b1ce99ae2..054d59b984 100644
--- a/indra/llui/lldockablefloater.h
+++ b/indra/llui/lldockablefloater.h
@@ -130,6 +130,10 @@ protected:
 	void setDockControl(LLDockControl* dockControl);
 	const LLUIImagePtr& getDockTongue();
 
+	// Checks if docking should be forced.
+	// It may be useful e.g. if floater created in mouselook mode (see EXT-5609)
+	boost::function<BOOL ()> mIsDockedStateForcedCallback;
+
 private:
 	std::auto_ptr<LLDockControl> mDockControl;
 	LLUIImagePtr mDockTongue;
@@ -143,6 +147,9 @@ private:
 	bool mUseTongue;
 
 	bool mOverlapsScreenChannel;
+
+	// Force docking when the floater is being shown for the first time.
+	bool mForceDocking;
 };
 
 #endif /* LL_DOCKABLEFLOATER_H */