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diff --git a/indra/newview/llinspectgroup.cpp b/indra/newview/llinspectgroup.cpp
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+++ b/indra/newview/llinspectgroup.cpp
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+/** 
+ * @file llinspectgroup.cpp
+ *
+ * $LicenseInfo:firstyear=2009&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llinspectgroup.h"
+
+// viewer files
+#include "llgroupactions.h"
+#include "llgroupmgr.h"
+#include "llinspect.h"
+#include "llstartup.h"
+
+// Linden libraries
+#include "llcontrol.h"	// LLCachedControl
+#include "llfloater.h"
+#include "llfloaterreg.h"
+#include "llresmgr.h"	// getMonetaryString()
+#include "lltooltip.h"	// positionViewNearMouse()
+#include "lltrans.h"
+#include "lluictrl.h"
+
+class LLFetchGroupData;
+
+
+//////////////////////////////////////////////////////////////////////////////
+// LLInspectGroup
+//////////////////////////////////////////////////////////////////////////////
+
+/// Group Inspector, a small information window used when clicking
+/// on group names in the 2D UI
+class LLInspectGroup : public LLInspect
+{
+	friend class LLFloaterReg;
+	
+public:
+	// key["group_id"] - Group ID for which to show information
+	// Inspector will be positioned relative to current mouse position
+	LLInspectGroup(const LLSD& key);
+	virtual ~LLInspectGroup();
+	
+	// Because floater is single instance, need to re-parse data on each spawn
+	// (for example, inspector about same group but in different position)
+	/*virtual*/ void onOpen(const LLSD& group_id);
+
+	// When closing they should close their gear menu 
+	/*virtual*/ void onClose(bool app_quitting);
+	
+	// Update view based on information from group manager
+	void processGroupData();
+	
+	// Make network requests for all the data to display in this view.
+	// Used on construction and if avatar id changes.
+	void requestUpdate();
+		
+	// Callback for gCacheName to look up group name
+	// Faster than waiting for group properties to return
+	void nameUpdatedCallback(const LLUUID& id,
+							 const std::string& first,
+							 const std::string& last,
+							 BOOL is_group);
+
+	// Button/menu callbacks
+	void onClickViewProfile();
+	void onClickJoin();
+	void onClickLeave();
+	
+private:
+	LLUUID				mGroupID;
+	// an in-flight network request for group properties 
+	// is represented by this object
+	LLFetchGroupData*	mPropertiesRequest;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+// LLFetchGroupData
+//////////////////////////////////////////////////////////////////////////////
+
+// This object represents a pending request for avatar properties information
+class LLFetchGroupData : public LLGroupMgrObserver
+{
+public:
+	// If the inspector closes it will delete the pending request object, so the
+	// inspector pointer will be valid for the lifetime of this object
+	LLFetchGroupData(const LLUUID& group_id, LLInspectGroup* inspector)
+	:	LLGroupMgrObserver(group_id),
+		mInspector(inspector)
+	{
+		LLGroupMgr* mgr = LLGroupMgr::getInstance();
+		// register ourselves as an observer
+		mgr->addObserver(this);
+		// send a request
+		mgr->sendGroupPropertiesRequest(group_id);
+	}
+	
+	~LLFetchGroupData()
+	{
+		// remove ourselves as an observer
+		LLGroupMgr::getInstance()->removeObserver(this);
+	}
+	
+	void changed(LLGroupChange gc)
+	{
+		if (gc == GC_PROPERTIES)
+		{
+			mInspector->processGroupData();
+		}
+	}
+	
+	LLInspectGroup* mInspector;
+};
+
+LLInspectGroup::LLInspectGroup(const LLSD& sd)
+:	LLInspect( LLSD() ),	// single_instance, doesn't really need key
+	mGroupID(),			// set in onOpen()
+	mPropertiesRequest(NULL)
+{
+	mCommitCallbackRegistrar.add("InspectGroup.ViewProfile",
+		boost::bind(&LLInspectGroup::onClickViewProfile, this));
+	mCommitCallbackRegistrar.add("InspectGroup.Join",
+		boost::bind(&LLInspectGroup::onClickJoin, this));	
+	mCommitCallbackRegistrar.add("InspectGroup.Leave",
+		boost::bind(&LLInspectGroup::onClickLeave, this));	
+
+	// can't make the properties request until the widgets are constructed
+	// as it might return immediately, so do it in postBuild.
+}
+
+LLInspectGroup::~LLInspectGroup()
+{
+	// clean up any pending requests so they don't call back into a deleted
+	// view
+	delete mPropertiesRequest;
+	mPropertiesRequest = NULL;
+}
+
+
+// Multiple calls to showInstance("inspect_avatar", foo) will provide different
+// LLSD for foo, which we will catch here.
+//virtual
+void LLInspectGroup::onOpen(const LLSD& data)
+{
+	// start fade animation
+	LLInspect::onOpen(data);
+
+	mGroupID = data["group_id"];
+
+	// Position the inspector relative to the mouse cursor
+	// Similar to how tooltips are positioned
+	// See LLToolTipMgr::createToolTip
+	if (data.has("pos"))
+	{
+		LLUI::positionViewNearMouse(this, data["pos"]["x"].asInteger(), data["pos"]["y"].asInteger());
+	}
+	else
+	{
+		LLUI::positionViewNearMouse(this);
+	}
+
+	// can't call from constructor as widgets are not built yet
+	requestUpdate();
+}
+
+// virtual
+void LLInspectGroup::onClose(bool app_quitting)
+{
+	// *TODO: If we add a gear menu, close it here
+}	
+
+void LLInspectGroup::requestUpdate()
+{
+	// Don't make network requests when spawning from the debug menu at the
+	// login screen (which is useful to work on the layout).
+	if (mGroupID.isNull())
+	{
+		if (LLStartUp::getStartupState() >= STATE_STARTED)
+		{
+			// once we're running we don't want to show the test floater
+			// for bogus LLUUID::null links
+			closeFloater();
+		}
+		return;
+	}
+
+	// Clear out old data so it doesn't flash between old and new
+	getChild<LLUICtrl>("group_name")->setValue("");
+	getChild<LLUICtrl>("group_subtitle")->setValue("");
+	getChild<LLUICtrl>("group_details")->setValue("");
+	getChild<LLUICtrl>("group_cost")->setValue("");
+	// Must have a visible button so the inspector can take focus
+	getChild<LLUICtrl>("view_profile_btn")->setVisible(true);
+	getChild<LLUICtrl>("leave_btn")->setVisible(false);
+	getChild<LLUICtrl>("join_btn")->setVisible(false);
+	
+	// Make a new request for properties
+	delete mPropertiesRequest;
+	mPropertiesRequest = new LLFetchGroupData(mGroupID, this);
+
+	// Name lookup will be faster out of cache, use that
+	gCacheName->get(mGroupID, TRUE,
+		boost::bind(&LLInspectGroup::nameUpdatedCallback,
+			this, _1, _2, _3, _4));
+}
+
+void LLInspectGroup::nameUpdatedCallback(
+	const LLUUID& id,
+	const std::string& first,
+	const std::string& last,
+	BOOL is_group)
+{
+	if (id == mGroupID)
+	{
+		// group names are returned as a first name
+		getChild<LLUICtrl>("group_name")->setValue(LLSD(first) );
+	}
+	
+	// Otherwise possibly a request for an older inspector, ignore it
+}
+
+void LLInspectGroup::processGroupData()
+{
+	LLGroupMgrGroupData* data =
+		LLGroupMgr::getInstance()->getGroupData(mGroupID);
+
+	if (data)
+	{
+		// Noun pluralization depends on language
+		std::string lang = LLUI::getLanguage();
+		std::string members =
+			LLTrans::getCountString(lang, "GroupMembers", data->mMemberCount);
+		getChild<LLUICtrl>("group_subtitle")->setValue( LLSD(members) );
+
+		getChild<LLUICtrl>("group_details")->setValue( LLSD(data->mCharter) );
+
+		getChild<LLUICtrl>("group_icon")->setValue( LLSD(data->mInsigniaID) );
+
+		std::string cost;
+		bool is_member = LLGroupActions::isInGroup(mGroupID);
+		if (is_member)
+		{
+			cost = getString("YouAreMember");
+		}
+		else if (data->mOpenEnrollment)
+		{
+			if (data->mMembershipFee == 0)
+			{
+				cost = getString("FreeToJoin");
+			}
+			else
+			{
+				std::string amount =
+					LLResMgr::getInstance()->getMonetaryString(
+						data->mMembershipFee);
+				LLStringUtil::format_map_t args;
+				args["[AMOUNT]"] = amount;
+				cost = getString("CostToJoin", args);
+			}
+		}
+		else
+		{
+			cost = getString("PrivateGroup");
+		}
+		getChild<LLUICtrl>("group_cost")->setValue(cost);
+
+		getChild<LLUICtrl>("join_btn")->setVisible(!is_member);
+		getChild<LLUICtrl>("leave_btn")->setVisible(is_member);
+
+		// Only enable join button if you are allowed to join
+		bool can_join = !is_member && data->mOpenEnrollment;
+		getChild<LLUICtrl>("join_btn")->setEnabled(can_join);
+	}
+
+	// Delete the request object as it has been satisfied
+	delete mPropertiesRequest;
+	mPropertiesRequest = NULL;
+}
+
+void LLInspectGroup::onClickViewProfile()
+{
+	closeFloater();
+	LLGroupActions::show(mGroupID);
+}
+
+void LLInspectGroup::onClickJoin()
+{
+	closeFloater();
+	LLGroupActions::join(mGroupID);
+}
+
+void LLInspectGroup::onClickLeave()
+{
+	closeFloater();
+	LLGroupActions::leave(mGroupID);
+}
+
+//////////////////////////////////////////////////////////////////////////////
+// LLInspectGroupUtil
+//////////////////////////////////////////////////////////////////////////////
+void LLInspectGroupUtil::registerFloater()
+{
+	LLFloaterReg::add("inspect_group", "inspect_group.xml",
+					  &LLFloaterReg::build<LLInspectGroup>);
+}