/** 
 * @file lltoolpie.cpp
 * @brief LLToolPie class implementation
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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 "lltoolpie.h"

#include "indra_constants.h"
#include "llclickaction.h"
#include "llparcel.h"

#include "llagent.h"
#include "llagentcamera.h"
#include "llavatarnamecache.h"
#include "llfocusmgr.h"
#include "llfirstuse.h"
#include "llfloaterland.h"
#include "llfloaterreg.h"
#include "llfloaterscriptdebug.h"
#include "lltooltip.h"
#include "llhudeffecttrail.h"
#include "llhudicon.h"
#include "llhudmanager.h"
#include "llkeyboard.h"
#include "llmediaentry.h"
#include "llmenugl.h"
#include "llmutelist.h"
#include "llresmgr.h"  // getMonetaryString
#include "llselectmgr.h"
#include "lltoolfocus.h"
#include "lltoolgrab.h"
#include "lltoolmgr.h"
#include "lltoolselect.h"
#include "lltrans.h"
#include "llviewercamera.h"
#include "llviewerparcelmedia.h"
#include "llviewercontrol.h"
#include "llviewermenu.h"
#include "llviewerobjectlist.h"
#include "llviewerobject.h"
#include "llviewerparcelmgr.h"
#include "llviewerwindow.h"
#include "llviewerinput.h"
#include "llviewermedia.h"
#include "llvoavatarself.h"
#include "llviewermediafocus.h"
#include "llworld.h"
#include "llui.h"
#include "llweb.h"
#include "pipeline.h"	// setHighlightObject
#include "lluiusage.h"

extern BOOL gDebugClicks;

static void handle_click_action_play();
static void handle_click_action_open_media(LLPointer<LLViewerObject> objectp);
static ECursorType cursor_from_parcel_media(U8 click_action);

LLToolPie::LLToolPie()
:	LLTool(std::string("Pie")),
	mMouseButtonDown( false ),
	mMouseOutsideSlop( false ),
	mMouseSteerX(-1),
	mMouseSteerY(-1),
	mClickAction(0),
	mClickActionBuyEnabled( gSavedSettings.getBOOL("ClickActionBuyEnabled") ),
	mClickActionPayEnabled( gSavedSettings.getBOOL("ClickActionPayEnabled") ),
	mDoubleClickTimer()
{
}

BOOL LLToolPie::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, BOOL down)
{
	BOOL result = LLMouseHandler::handleAnyMouseClick(x, y, mask, clicktype, down);
	
	// This override DISABLES the keyboard focus reset that LLTool::handleAnyMouseClick adds.
	// LLToolPie will do the right thing in its pick callback.
	
	return result;
}

BOOL LLToolPie::handleMouseDown(S32 x, S32 y, MASK mask)
{
    if (mDoubleClickTimer.getStarted())
    {
        mDoubleClickTimer.stop();
    }

    mMouseOutsideSlop = FALSE;
	mMouseDownX = x;
	mMouseDownY = y;
	LLTimer pick_timer;
	BOOL pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
	LLPickInfo transparent_pick = gViewerWindow->pickImmediate(x, y, TRUE /*includes transparent*/, pick_rigged, FALSE, TRUE, FALSE);
	LLPickInfo visible_pick = gViewerWindow->pickImmediate(x, y, FALSE, pick_rigged);
	LLViewerObject *transp_object = transparent_pick.getObject();
	LLViewerObject *visible_object = visible_pick.getObject();

	// Current set of priorities
	// 1. Transparent attachment pick
	// 2. Transparent actionable pick
	// 3. Visible attachment pick (e.x we click on attachment under invisible floor)
	// 4. Visible actionable pick
	// 5. Transparent pick (e.x. movement on transparent object/floor, our default pick)
	// left mouse down always picks transparent (but see handleMouseUp).
	// Also see LLToolPie::handleHover() - priorities are a bit different there.
	// Todo: we need a more consistent set of rules to work with
	if (transp_object == visible_object || !visible_object)
	{
		// Note: if transparent object is null, then visible object is also null
		// since transparent pick includes non-tranpsarent one.
		// !transparent_object check will be covered by transparent_object == visible_object.
		mPick = transparent_pick;
	}
	else
	{
		// Select between two non-null picks
		LLViewerObject *transp_parent = transp_object->getRootEdit();
		LLViewerObject *visible_parent = visible_object->getRootEdit();
		if (transp_object->isAttachment())
		{
			// 1. Transparent attachment
			mPick = transparent_pick;
		}
		else if (transp_object->getClickAction() != CLICK_ACTION_DISABLED
				 && (useClickAction(mask, transp_object, transp_parent) || transp_object->flagHandleTouch() || (transp_parent && transp_parent->flagHandleTouch())))
		{
			// 2. Transparent actionable pick
			mPick = transparent_pick;
		}
		else if (visible_object->isAttachment())
		{
			// 3. Visible attachment pick
			mPick = visible_pick;
		}
		else if (visible_object->getClickAction() != CLICK_ACTION_DISABLED
				 && (useClickAction(mask, visible_object, visible_parent) || visible_object->flagHandleTouch() || (visible_parent && visible_parent->flagHandleTouch())))
		{
			// 4. Visible actionable pick
			mPick = visible_pick;
		}
		else
		{
			// 5. Default: transparent
			mPick = transparent_pick;
		}
	}
	LL_INFOS() << "pick_rigged is " << (S32) pick_rigged << " pick time elapsed " << pick_timer.getElapsedTimeF32() << LL_ENDL;

	mPick.mKeyMask = mask;

	mMouseButtonDown = true;

	// If nothing clickable is picked, needs to return
	// false for click-to-walk or click-to-teleport to work.
	return handleLeftClickPick();
}

// Spawn context menus on right mouse down so you can drag over and select
// an item.
BOOL LLToolPie::handleRightMouseDown(S32 x, S32 y, MASK mask)
{
	// don't pick transparent so users can't "pay" transparent objects
	mPick = gViewerWindow->pickImmediate(x, y,
                                         /*BOOL pick_transparent*/ FALSE,
                                         /*BOOL pick_rigged*/ TRUE,
                                         /*BOOL pick_particle*/ TRUE);
	mPick.mKeyMask = mask;

	// claim not handled so UI focus stays same
	if(gAgentCamera.getCameraMode() != CAMERA_MODE_MOUSELOOK)
	{
		handleRightClickPick();
	}
	return FALSE;
}

BOOL LLToolPie::handleRightMouseUp(S32 x, S32 y, MASK mask)
{
	LLToolMgr::getInstance()->clearTransientTool();
	return LLTool::handleRightMouseUp(x, y, mask);
}

BOOL LLToolPie::handleScrollWheelAny(S32 x, S32 y, S32 clicks_x, S32 clicks_y)
{
    BOOL res = FALSE;
    // mHoverPick should have updated on its own and we should have a face
    // in LLViewerMediaFocus in case of media, so just reuse mHoverPick
    if (mHoverPick.mUVCoords.mV[VX] >= 0.f && mHoverPick.mUVCoords.mV[VY] >= 0.f)
    {
        res = LLViewerMediaFocus::getInstance()->handleScrollWheel(mHoverPick.mUVCoords, clicks_x, clicks_y);
    }
    else
    {
        // this won't provide correct coordinates in case of object selection
        res = LLViewerMediaFocus::getInstance()->handleScrollWheel(x, y, clicks_x, clicks_y);
    }
    return res;
}

BOOL LLToolPie::handleScrollWheel(S32 x, S32 y, S32 clicks)
{
    return handleScrollWheelAny(x, y, 0, clicks);
}

BOOL LLToolPie::handleScrollHWheel(S32 x, S32 y, S32 clicks)
{
    return handleScrollWheelAny(x, y, clicks, 0);
}

// True if you selected an object.
BOOL LLToolPie::handleLeftClickPick()
{
	S32 x = mPick.mMousePt.mX;
	S32 y = mPick.mMousePt.mY;
	MASK mask = mPick.mKeyMask;
	if (mPick.mPickType == LLPickInfo::PICK_PARCEL_WALL)
	{
		LLParcel* parcel = LLViewerParcelMgr::getInstance()->getCollisionParcel();
		if (parcel)
		{
			LLViewerParcelMgr::getInstance()->selectCollisionParcel();
			if (parcel->getParcelFlag(PF_USE_PASS_LIST) 
				&& !LLViewerParcelMgr::getInstance()->isCollisionBanned())
			{
				// if selling passes, just buy one
				void* deselect_when_done = (void*)TRUE;
				LLPanelLandGeneral::onClickBuyPass(deselect_when_done);
			}
			else
			{
				// not selling passes, get info
				LLFloaterReg::showInstance("about_land");
			}
		}

		gFocusMgr.setKeyboardFocus(NULL);
		return LLTool::handleMouseDown(x, y, mask);
	}

	// didn't click in any UI object, so must have clicked in the world
	LLViewerObject *object = mPick.getObject();
	LLViewerObject *parent = NULL;

	if (mPick.mPickType != LLPickInfo::PICK_LAND)
	{
		LLViewerParcelMgr::getInstance()->deselectLand();
	}
	
	if (object)
	{
		parent = object->getRootEdit();
	}

	if (handleMediaClick(mPick))
	{
		return TRUE;
	}

	// If it's a left-click, and we have a special action, do it.
	if (useClickAction(mask, object, parent))
	{
		mClickAction = 0;
		if (object && object->getClickAction()) 
		{
			mClickAction = object->getClickAction();
		}
		else if (parent && parent->getClickAction()) 
		{
			mClickAction = parent->getClickAction();
		}

		switch(mClickAction)
		{
		case CLICK_ACTION_TOUCH:
			// touch behavior down below...
			break;
		case CLICK_ACTION_SIT:
			{
				if (isAgentAvatarValid() && !gAgentAvatarp->isSitting()) // agent not already sitting
				{
					handle_object_sit_or_stand();
					// put focus in world when sitting on an object
					gFocusMgr.setKeyboardFocus(NULL);
					return TRUE;
				} // else nothing (fall through to touch)
			}
		case CLICK_ACTION_PAY:
			if ( mClickActionPayEnabled )
			{
				if ((object && object->flagTakesMoney())
					|| (parent && parent->flagTakesMoney()))
				{
					// pay event goes to object actually clicked on
					mClickActionObject = object;
					mLeftClickSelection = LLToolSelect::handleObjectSelection(mPick, FALSE, TRUE);
					if (LLSelectMgr::getInstance()->selectGetAllValid())
					{
						// call this right away, since we have all the info we need to continue the action
						selectionPropertiesReceived();
					}
					return TRUE;
				}
			}
			break;
		case CLICK_ACTION_BUY:
			if ( mClickActionBuyEnabled )
			{
				mClickActionObject = parent;
				mLeftClickSelection = LLToolSelect::handleObjectSelection(mPick, FALSE, TRUE, TRUE);
				if (LLSelectMgr::getInstance()->selectGetAllValid())
				{
					// call this right away, since we have all the info we need to continue the action
					selectionPropertiesReceived();
				}
				return TRUE;
			}
			break;
		case CLICK_ACTION_OPEN:
			if (parent && parent->allowOpen())
			{
				mClickActionObject = parent;
				mLeftClickSelection = LLToolSelect::handleObjectSelection(mPick, FALSE, TRUE, TRUE);
				if (LLSelectMgr::getInstance()->selectGetAllValid())
				{
					// call this right away, since we have all the info we need to continue the action
					selectionPropertiesReceived();
				}
			}
			return TRUE;	
		case CLICK_ACTION_PLAY:
			handle_click_action_play();
			return TRUE;
		case CLICK_ACTION_OPEN_MEDIA:
			// mClickActionObject = object;
			handle_click_action_open_media(object);
			return TRUE;
		case CLICK_ACTION_ZOOM:
			{	
				const F32 PADDING_FACTOR = 2.f;
				LLViewerObject* object = gObjectList.findObject(mPick.mObjectID);
				
				if (object)
				{
					gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
					
					LLBBox bbox = object->getBoundingBoxAgent() ;
					F32 angle_of_view = llmax(0.1f, LLViewerCamera::getInstance()->getAspect() > 1.f ? LLViewerCamera::getInstance()->getView() * LLViewerCamera::getInstance()->getAspect() : LLViewerCamera::getInstance()->getView());
					F32 distance = bbox.getExtentLocal().magVec() * PADDING_FACTOR / atan(angle_of_view);
				
					LLVector3 obj_to_cam = LLViewerCamera::getInstance()->getOrigin() - bbox.getCenterAgent();
					obj_to_cam.normVec();
					
					LLVector3d object_center_global = gAgent.getPosGlobalFromAgent(bbox.getCenterAgent());
					gAgentCamera.setCameraPosAndFocusGlobal(object_center_global + LLVector3d(obj_to_cam * distance), 
													  object_center_global, 
													  mPick.mObjectID );
				}
			}
			return TRUE;			
		case CLICK_ACTION_DISABLED:
			return TRUE;
		default:
			// nothing
			break;
		}
	}

	// put focus back "in world"
	if (gFocusMgr.getKeyboardFocus())
	{
		gFocusMgr.setKeyboardFocus(NULL);
	}

    bool touchable = object
                     && (object->getClickAction() != CLICK_ACTION_DISABLED)
                     && (object->flagHandleTouch() || (parent && parent->flagHandleTouch()));

	// Switch to grab tool if physical or triggerable
	if (object && 
		!object->isAvatar() && 
		((object->flagUsePhysics() || (parent && !parent->isAvatar() && parent->flagUsePhysics())) || touchable) 
		)
	{
		gGrabTransientTool = this;
		mMouseButtonDown = false;
		LLToolGrab::getInstance()->setClickedInMouselook(gAgentCamera.cameraMouselook());
		LLToolMgr::getInstance()->getCurrentToolset()->selectTool( LLToolGrab::getInstance() );
		return LLToolGrab::getInstance()->handleObjectHit( mPick );
	}
	
	LLHUDIcon* last_hit_hud_icon = mPick.mHUDIcon;
	if (!object && last_hit_hud_icon && last_hit_hud_icon->getSourceObject())
	{
		LLFloaterScriptDebug::show(last_hit_hud_icon->getSourceObject()->getID());
	}

	// If left-click never selects or spawns a menu
	// Eat the event.

	// mouse already released
	if (!mMouseButtonDown)
	{
		return true;
	}

	while (object && object->isAttachment() && !object->flagHandleTouch())
	{
		// don't pick avatar through hud attachment
		if (object->isHUDAttachment())
		{
			break;
		}
		object = (LLViewerObject*)object->getParent();
	}
	if (object && object == gAgentAvatarp)
	{
		// we left clicked on avatar, switch to focus mode
		mMouseButtonDown = false;
		LLToolMgr::getInstance()->setTransientTool(LLToolCamera::getInstance());
		gViewerWindow->hideCursor();
		LLToolCamera::getInstance()->setMouseCapture(TRUE);
        LLToolCamera::getInstance()->setClickPickPending();
		LLToolCamera::getInstance()->pickCallback(mPick);
		gAgentCamera.setFocusOnAvatar(TRUE, TRUE);

		return TRUE;
	}
	//////////
	//	// Could be first left-click on nothing
	//	LLFirstUse::useLeftClickNoHit();
	/////////

	return LLTool::handleMouseDown(x, y, mask);
}

BOOL LLToolPie::useClickAction(MASK mask, 
							   LLViewerObject* object, 
							   LLViewerObject* parent)
{
	return	mask == MASK_NONE
			&& object
			&& !object->isAttachment() 
			&& LLPrimitive::isPrimitive(object->getPCode())
				// useClickAction does not handle Touch (0) or Disabled action
			&& ((object->getClickAction() && object->getClickAction() != CLICK_ACTION_DISABLED)
				|| (parent && parent->getClickAction() && parent->getClickAction() != CLICK_ACTION_DISABLED));

}

U8 final_click_action(LLViewerObject* obj)
{
	if (!obj) return CLICK_ACTION_NONE;
	if (obj->isAttachment()) return CLICK_ACTION_NONE;

	U8 click_action = CLICK_ACTION_TOUCH;
	LLViewerObject* parent = obj->getRootEdit();
    U8 object_action = obj->getClickAction();
    U8 parent_action = parent ? parent->getClickAction() : CLICK_ACTION_TOUCH;
    if (parent_action == CLICK_ACTION_DISABLED || object_action)
    {
        // CLICK_ACTION_DISABLED ("None" in UI) is intended for child action to
        // override parent's action when assigned to parent or to child
        click_action = object_action;
    }
    else if (parent_action)
    {
        click_action = parent_action;
    }
	return click_action;
}

ECursorType LLToolPie::cursorFromObject(LLViewerObject* object)
{
	LLViewerObject* parent = NULL;
	if (object)
	{
		parent = object->getRootEdit();
	}
	U8 click_action = final_click_action(object);
	ECursorType cursor = UI_CURSOR_ARROW;
	switch(click_action)
	{
	case CLICK_ACTION_SIT:
		{
			if (isAgentAvatarValid() && !gAgentAvatarp->isSitting()) // not already sitting?
			{
				cursor = UI_CURSOR_TOOLSIT;
			}
		}
		break;
	case CLICK_ACTION_BUY:
		if ( mClickActionBuyEnabled )
		{ 
			LLSelectNode* node = LLSelectMgr::getInstance()->getHoverNode();
			if (!node || node->mSaleInfo.isForSale())
			{
				cursor = UI_CURSOR_TOOLBUY;
			}
		}
		break;
	case CLICK_ACTION_OPEN:
		// Open always opens the parent.
		if (parent && parent->allowOpen())
		{
			cursor = UI_CURSOR_TOOLOPEN;
		}
		break;
	case CLICK_ACTION_PAY:	
		if ( mClickActionPayEnabled )
		{
			if ((object && object->flagTakesMoney())
				|| (parent && parent->flagTakesMoney()))
			{
				cursor = UI_CURSOR_TOOLBUY;
			}
		}
		break;
	case CLICK_ACTION_ZOOM:
			cursor = UI_CURSOR_TOOLZOOMIN;
			break;			
	case CLICK_ACTION_PLAY:
	case CLICK_ACTION_OPEN_MEDIA: 
		cursor = cursor_from_parcel_media(click_action);
		break;
	case CLICK_ACTION_DISABLED: 
		break;
	default:
		break;
	}
	return cursor;
}

void LLToolPie::resetSelection()
{
	mLeftClickSelection = NULL;
	mClickActionObject = NULL;
	mClickAction = 0;
}

bool LLToolPie::walkToClickedLocation()
{
    if (gAgent.getFlying()							// don't auto-navigate while flying until that works
        || !gAgentAvatarp
        || gAgentAvatarp->isSitting())
    {
        return false;
    }

	LLUIUsage::instance().logCommand("Agent.WalkToClickedLocation");
	
    LLPickInfo saved_pick = mPick;
    if (gAgentCamera.getCameraMode() != CAMERA_MODE_MOUSELOOK)
    {
        mPick = gViewerWindow->pickImmediate(mHoverPick.mMousePt.mX, mHoverPick.mMousePt.mY,
            FALSE /* ignore transparent */,
            FALSE /* ignore rigged */,
            FALSE /* ignore particles */);
    }
    else
    {
        // We do not handle hover in mouselook as we do in other modes, so
        // use croshair's position to do a pick
        mPick = gViewerWindow->pickImmediate(gViewerWindow->getWorldViewRectScaled().getWidth() / 2,
            gViewerWindow->getWorldViewRectScaled().getHeight() / 2,
            FALSE /* ignore transparent */,
            FALSE /* ignore rigged */,
            FALSE /* ignore particles */);
    }

    if (mPick.mPickType == LLPickInfo::PICK_OBJECT)
    {
        if (mPick.getObject() && mPick.getObject()->isHUDAttachment())
        {
            mPick = saved_pick;
            return false;
        }
    }

    LLViewerObject* avatar_object = mPick.getObject();

    // get pointer to avatar
    while (avatar_object && !avatar_object->isAvatar())
    {
        avatar_object = (LLViewerObject*)avatar_object->getParent();
    }

    if (avatar_object && ((LLVOAvatar*)avatar_object)->isSelf())
    {
        const F64 SELF_CLICK_WALK_DISTANCE = 3.0;
        // pretend we picked some point a bit in front of avatar
        mPick.mPosGlobal = gAgent.getPositionGlobal() + LLVector3d(LLViewerCamera::instance().getAtAxis()) * SELF_CLICK_WALK_DISTANCE;
    }

    if ((mPick.mPickType == LLPickInfo::PICK_LAND && !mPick.mPosGlobal.isExactlyZero()) ||
        (mPick.mObjectID.notNull() && !mPick.mPosGlobal.isExactlyZero()))
    {
        gAgentCamera.setFocusOnAvatar(TRUE, TRUE);

        if (mAutoPilotDestination) { mAutoPilotDestination->markDead(); }
        mAutoPilotDestination = (LLHUDEffectBlob *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BLOB, FALSE);
        mAutoPilotDestination->setPositionGlobal(mPick.mPosGlobal);
        mAutoPilotDestination->setPixelSize(5);
        mAutoPilotDestination->setColor(LLColor4U(170, 210, 190));
        mAutoPilotDestination->setDuration(3.f);

        LLVector3d pos = LLToolPie::getInstance()->getPick().mPosGlobal;
        gAgent.startAutoPilotGlobal(pos, std::string(), NULL, NULL, NULL, 0.f, 0.03f, FALSE);
        LLFirstUse::notMoving(false);
        showVisualContextMenuEffect();
        return true;
    }
    else
    {
        LL_DEBUGS() << "walk target was "
            << (mPick.mPosGlobal.isExactlyZero() ? "zero" : "not zero")
            << ", pick type was " << (mPick.mPickType == LLPickInfo::PICK_LAND ? "land" : "not land")
            << ", pick object was " << mPick.mObjectID
            << LL_ENDL;
        mPick = saved_pick;
        return false;
    }
}

bool LLToolPie::teleportToClickedLocation()
{
    if (gAgentCamera.getCameraMode() == CAMERA_MODE_MOUSELOOK)
    {
        // We do not handle hover in mouselook as we do in other modes, so
        // use croshair's position to do a pick
        BOOL pick_rigged = false;
        mHoverPick = gViewerWindow->pickImmediate(gViewerWindow->getWorldViewRectScaled().getWidth() / 2,
                                                  gViewerWindow->getWorldViewRectScaled().getHeight() / 2,
                                                  FALSE,
                                                  pick_rigged);
    }
    LLViewerObject* objp = mHoverPick.getObject();
    LLViewerObject* parentp = objp ? objp->getRootEdit() : NULL;

    if (objp && (objp->getAvatar() == gAgentAvatarp || objp == gAgentAvatarp)) // ex: nametag
    {
        // Don't teleport to self, teleporting to other avatars is fine
        return false;
    }

    bool is_in_world = mHoverPick.mObjectID.notNull() && objp && !objp->isHUDAttachment();
    bool is_land = mHoverPick.mPickType == LLPickInfo::PICK_LAND;
    bool pos_non_zero = !mHoverPick.mPosGlobal.isExactlyZero();
    bool has_touch_handler = (objp && objp->flagHandleTouch()) || (parentp && parentp->flagHandleTouch());
    U8 click_action = final_click_action(objp); // default action: 0 - touch
    bool has_click_action = (click_action || has_touch_handler) && click_action != CLICK_ACTION_DISABLED;

    if (pos_non_zero && (is_land || (is_in_world && !has_click_action)))
    {
        LLVector3d pos = mHoverPick.mPosGlobal;
        pos.mdV[VZ] += gAgentAvatarp->getPelvisToFoot();
        gAgent.teleportViaLocationLookAt(pos);
        mPick = mHoverPick;
        showVisualContextMenuEffect();
        return true;
    }
    return false;
}

// When we get object properties after left-clicking on an object
// with left-click = buy, if it's the same object, do the buy.

// static
void LLToolPie::selectionPropertiesReceived()
{
	// Make sure all data has been received.
	// This function will be called repeatedly as the data comes in.
	if (!LLSelectMgr::getInstance()->selectGetAllValid())
	{
		return;
	}

	LLObjectSelection* selection = LLToolPie::getInstance()->getLeftClickSelection();
	if (selection)
	{
		LLViewerObject* selected_object = selection->getPrimaryObject();
		// since we don't currently have a way to lock a selection, it could have changed
		// after we initially clicked on the object
		if (selected_object == LLToolPie::getInstance()->getClickActionObject())
		{
			U8 click_action = LLToolPie::getInstance()->getClickAction();
			switch (click_action)
			{
			case CLICK_ACTION_BUY:
				if ( LLToolPie::getInstance()->mClickActionBuyEnabled )
				{
					handle_buy();
				}
				break;
			case CLICK_ACTION_PAY:
				if ( LLToolPie::getInstance()->mClickActionPayEnabled )
				{
					handle_give_money_dialog();
				}
				break;
			case CLICK_ACTION_OPEN:
				LLFloaterReg::showInstance("openobject");
				break;
			case CLICK_ACTION_DISABLED:
				break;
			default:
				break;
			}
		}
	}
	LLToolPie::getInstance()->resetSelection();
}

BOOL LLToolPie::handleHover(S32 x, S32 y, MASK mask)
{
    BOOL pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
	mHoverPick = gViewerWindow->pickImmediate(x, y, FALSE, pick_rigged);
	LLViewerObject *parent = NULL;
	LLViewerObject *object = mHoverPick.getObject();
	LLSelectMgr::getInstance()->setHoverObject(object, mHoverPick.mObjectFace);
	if (object)
	{
		parent = object->getRootEdit();
	}

	if (!handleMediaHover(mHoverPick)
		&& !mMouseOutsideSlop
		&& mMouseButtonDown
		// disable camera steering if click on land is not used for moving
		&& gViewerInput.isMouseBindUsed(CLICK_LEFT, MASK_NONE, MODE_THIRD_PERSON))
	{
		S32 delta_x = x - mMouseDownX;
		S32 delta_y = y - mMouseDownY;
		S32 threshold = gSavedSettings.getS32("DragAndDropDistanceThreshold");
		if (delta_x * delta_x + delta_y * delta_y > threshold * threshold)
		{
			startCameraSteering();
			steerCameraWithMouse(x, y);
			gViewerWindow->setCursor(UI_CURSOR_TOOLGRAB);
		}
		else
		{
			gViewerWindow->setCursor(UI_CURSOR_ARROW);
		}
	}
	else if (inCameraSteerMode())
	{
		steerCameraWithMouse(x, y);
		gViewerWindow->setCursor(UI_CURSOR_TOOLGRAB);
	}
	else
	{
		// perform a separate pick that detects transparent objects since they respond to 1-click actions
		LLPickInfo click_action_pick = gViewerWindow->pickImmediate(x, y, FALSE, pick_rigged);

		LLViewerObject* click_action_object = click_action_pick.getObject();

		if (click_action_object && useClickAction(mask, click_action_object, click_action_object->getRootEdit()))
		{
			ECursorType cursor = cursorFromObject(click_action_object);
			gViewerWindow->setCursor(cursor);
			LL_DEBUGS("UserInput") << "hover handled by LLToolPie (inactive)" << LL_ENDL;
		}
		
		else if ((object && !object->isAvatar() && object->flagUsePhysics()) 
				 || (parent && !parent->isAvatar() && parent->flagUsePhysics()))
		{
			gViewerWindow->setCursor(UI_CURSOR_TOOLGRAB);
			LL_DEBUGS("UserInput") << "hover handled by LLToolPie (inactive)" << LL_ENDL;
		}
		else if ((!object || object->getClickAction() != CLICK_ACTION_DISABLED)
				 && ((object && object->flagHandleTouch()) || (parent && parent->flagHandleTouch()))
				 && (!object || !object->isAvatar()))
		{
			gViewerWindow->setCursor(UI_CURSOR_HAND);
			LL_DEBUGS("UserInput") << "hover handled by LLToolPie (inactive)" << LL_ENDL;
		}
		else
		{
			gViewerWindow->setCursor(UI_CURSOR_ARROW);
			LL_DEBUGS("UserInput") << "hover handled by LLToolPie (inactive)" << LL_ENDL;
		}
	}

	if(!object)
	{
		LLViewerMediaFocus::getInstance()->clearHover();
	}

	return TRUE;
}

BOOL LLToolPie::handleMouseUp(S32 x, S32 y, MASK mask)
{
    if (!mDoubleClickTimer.getStarted())
    {
        mDoubleClickTimer.start();
    }
    else
    {
        mDoubleClickTimer.reset();
    }
    LLViewerObject* obj = mPick.getObject();

	stopCameraSteering();
	mMouseButtonDown = false;

	gViewerWindow->setCursor(UI_CURSOR_ARROW);
	if (hasMouseCapture())
	{
		setMouseCapture(FALSE);
	}

	LLToolMgr::getInstance()->clearTransientTool();
	gAgentCamera.setLookAt(LOOKAT_TARGET_CONVERSATION, obj); // maybe look at object/person clicked on

	return LLTool::handleMouseUp(x, y, mask);
}

void LLToolPie::stopClickToWalk()
{
	mPick.mPosGlobal = gAgent.getPositionGlobal();
	handle_go_to();
	if(mAutoPilotDestination) 
	{ 
		mAutoPilotDestination->markDead(); 
	}
}

BOOL LLToolPie::handleDoubleClick(S32 x, S32 y, MASK mask)
{
	if (gDebugClicks)
	{
		LL_INFOS() << "LLToolPie handleDoubleClick (becoming mouseDown)" << LL_ENDL;
	}

	if (handleMediaDblClick(mPick))
	{
		return TRUE;
	}
    
	if (!mDoubleClickTimer.getStarted() || (mDoubleClickTimer.getElapsedTimeF32() > 0.3f))
	{
		mDoubleClickTimer.stop();
		return FALSE;
	}
	mDoubleClickTimer.stop();

	return FALSE;
}

static bool needs_tooltip(LLSelectNode* nodep)
{
	if (!nodep || !nodep->mValid) 
		return false;
	return true;
}


BOOL LLToolPie::handleTooltipLand(std::string line, std::string tooltip_msg)
{
	//  Do not show hover for land unless prefs are set to allow it. 
	if (!gSavedSettings.getBOOL("ShowLandHoverTip")) return TRUE; 

	LLViewerParcelMgr::getInstance()->setHoverParcel( mHoverPick.mPosGlobal );

	// Didn't hit an object, but since we have a land point we
	// must be hovering over land.
	
	LLParcel* hover_parcel = LLViewerParcelMgr::getInstance()->getHoverParcel();
	LLUUID owner;
	
	if ( hover_parcel )
	{
		owner = hover_parcel->getOwnerID();
	}
	
	// Line: "Land"
	line.clear();
	line.append(LLTrans::getString("TooltipLand"));
	if (hover_parcel)
	{
		line.append(hover_parcel->getName());
	}
	tooltip_msg.append(line);
	tooltip_msg.push_back('\n');
	
	// Line: "Owner: James Linden"
	line.clear();
	line.append(LLTrans::getString("TooltipOwner") + " ");
	
	if ( hover_parcel )
	{
		std::string name;
		if (LLUUID::null == owner)
		{
			line.append(LLTrans::getString("TooltipPublic"));
		}
		else if (hover_parcel->getIsGroupOwned())
		{
			if (gCacheName->getGroupName(owner, name))
			{
				line.append(name);
				line.append(LLTrans::getString("TooltipIsGroup"));
			}
			else
			{
				line.append(LLTrans::getString("RetrievingData"));
			}
		}
        else
        {
            LLAvatarName av_name;
            if (LLAvatarNameCache::get(owner, &av_name))
            {
                name = av_name.getUserName();
                line.append(name);
            }
            else
            {
                line.append(LLTrans::getString("RetrievingData"));
            }
        }
	}
	else
	{
		line.append(LLTrans::getString("RetrievingData"));
	}
	tooltip_msg.append(line);
	tooltip_msg.push_back('\n');
	
	// Line: "no fly, not safe, no build"
	
	// Don't display properties for your land.  This is just
	// confusing, because you can do anything on your own land.
	if ( hover_parcel && owner != gAgent.getID() )
	{
		S32 words = 0;
		
		line.clear();
		// JC - Keep this in the same order as the checkboxes
		// on the land info panel
		if ( !hover_parcel->getAllowModify() )
		{
			if ( hover_parcel->getAllowGroupModify() )
			{
				line.append(LLTrans::getString("TooltipFlagGroupBuild"));
			}
			else
			{
				line.append(LLTrans::getString("TooltipFlagNoBuild"));
			}
			words++;
		}
		
		if ( !hover_parcel->getAllowTerraform() )
		{
			if (words) line.append(", ");
			line.append(LLTrans::getString("TooltipFlagNoEdit"));
			words++;
		}
		
		if ( hover_parcel->getAllowDamage() )
		{
			if (words) line.append(", ");
			line.append(LLTrans::getString("TooltipFlagNotSafe"));
			words++;
		}
		
		// Maybe we should reflect the estate's block fly bit here as well?  DK 12/1/04
		if ( !hover_parcel->getAllowFly() )
		{
			if (words) line.append(", ");
			line.append(LLTrans::getString("TooltipFlagNoFly"));
			words++;
		}
		
		if ( !hover_parcel->getAllowOtherScripts() )
		{
			if (words) line.append(", ");
			if ( hover_parcel->getAllowGroupScripts() )
			{
				line.append(LLTrans::getString("TooltipFlagGroupScripts"));
			}
			else
			{
				line.append(LLTrans::getString("TooltipFlagNoScripts"));
			}
			
			words++;
		}
		
		if (words) 
		{
			tooltip_msg.append(line);
			tooltip_msg.push_back('\n');
		}
	}
	
	if (hover_parcel && hover_parcel->getParcelFlag(PF_FOR_SALE))
	{
		LLStringUtil::format_map_t args;
		S32 price = hover_parcel->getSalePrice();
		args["[AMOUNT]"] = LLResMgr::getInstance()->getMonetaryString(price);
		line = LLTrans::getString("TooltipForSaleL$", args);
		tooltip_msg.append(line);
		tooltip_msg.push_back('\n');
	}
	
	// trim last newlines
	if (!tooltip_msg.empty())
	{
		tooltip_msg.erase(tooltip_msg.size() - 1);
		LLToolTipMgr::instance().show(tooltip_msg);
	}
	
	return TRUE;
}

BOOL LLToolPie::handleTooltipObject( LLViewerObject* hover_object, std::string line, std::string tooltip_msg)
{
	if ( hover_object->isHUDAttachment() )
	{
		// no hover tips for HUD elements, since they can obscure
		// what the HUD is displaying
		return TRUE;
	}
	
	if ( hover_object->isAttachment() )
	{
		// get root of attachment then parent, which is avatar
		LLViewerObject* root_edit = hover_object->getRootEdit();
		if (!root_edit)
		{
			// Strange parenting issue, don't show any text
			return TRUE;
		}
		hover_object = (LLViewerObject*)root_edit->getParent();
		if (!hover_object)
		{
			// another strange parenting issue, bail out
			return TRUE;
		}
	}
	
	line.clear();
	if (hover_object->isAvatar())
	{
		// only show tooltip if same inspector not already open
		LLFloater* existing_inspector = LLFloaterReg::findInstance("inspect_avatar");
		if (!existing_inspector 
			|| !existing_inspector->getVisible()
			|| existing_inspector->getKey()["avatar_id"].asUUID() != hover_object->getID())
		{
			// Try to get display name + username
			std::string final_name;
			LLAvatarName av_name;
			if (LLAvatarNameCache::get(hover_object->getID(), &av_name))
			{
				final_name = av_name.getCompleteName();
			}
			else
			{
				final_name = LLTrans::getString("TooltipPerson");;
			}

			LLInspector::Params p;
			p.fillFrom(LLUICtrlFactory::instance().getDefaultParams<LLInspector>());
			p.message(final_name);
			p.image.name("Inspector_I");
			p.click_callback(boost::bind(showAvatarInspector, hover_object->getID()));
			p.visible_time_near(6.f);
			p.visible_time_far(3.f);
			p.delay_time(gSavedSettings.getF32("AvatarInspectorTooltipDelay"));
			p.wrap(false);
			
			LLToolTipMgr::instance().show(p);
		}
	}
	else
	{
		//
		//  We have hit a regular object (not an avatar or attachment)
		// 
		
		//
		//  Default prefs will suppress display unless the object is interactive
		//
		bool show_all_object_tips =
		(bool)gSavedSettings.getBOOL("ShowAllObjectHoverTip");			
		LLSelectNode *nodep = LLSelectMgr::getInstance()->getHoverNode();
		
		// only show tooltip if same inspector not already open
		LLFloater* existing_inspector = LLFloaterReg::findInstance("inspect_object");
		if (nodep &&
			(!existing_inspector 
			 || !existing_inspector->getVisible()
			 || existing_inspector->getKey()["object_id"].asUUID() != hover_object->getID()))
		{

			// Add price to tooltip for items on sale
			bool for_sale = for_sale_selection(nodep);
			if(for_sale)
			{
				LLStringUtil::format_map_t args;
				S32 price = nodep->mSaleInfo.getSalePrice();
				args["[AMOUNT]"] = LLResMgr::getInstance()->getMonetaryString(price);
				tooltip_msg.append(LLTrans::getString("TooltipPrice", args) );
			}

			if (nodep->mName.empty())
			{
				tooltip_msg.append(LLTrans::getString("TooltipNoName"));
			}
			else
			{
				tooltip_msg.append( nodep->mName );
			}
			
			bool has_media = false;
			bool is_time_based_media = false;
			bool is_web_based_media = false;
			bool is_media_playing = false;
			bool is_media_displaying = false;
			
			// Does this face have media?
			const LLTextureEntry* tep = hover_object->getTE(mHoverPick.mObjectFace);
			
			if(tep)
			{
				has_media = tep->hasMedia();
				const LLMediaEntry* mep = has_media ? tep->getMediaData() : NULL;
				if (mep)
				{
					viewer_media_t media_impl = LLViewerMedia::getInstance()->getMediaImplFromTextureID(mep->getMediaID());
					LLPluginClassMedia* media_plugin = NULL;
					
					if (media_impl.notNull() && (media_impl->hasMedia()))
					{
						is_media_displaying = true;
						//LLStringUtil::format_map_t args;
						
						media_plugin = media_impl->getMediaPlugin();
						if(media_plugin)
						{	
							if(media_plugin->pluginSupportsMediaTime())
							{
								is_time_based_media = true;
								is_web_based_media = false;
								//args["[CurrentURL]"] =  media_impl->getMediaURL();
								is_media_playing = media_impl->isMediaPlaying();
							}
							else
							{
								is_time_based_media = false;
								is_web_based_media = true;
								//args["[CurrentURL]"] =  media_plugin->getLocation();
							}
							//tooltip_msg.append(LLTrans::getString("CurrentURL", args));
						}
					}
				}
			}
			

			// Avoid showing tip over media that's displaying unless it's for sale
			// also check the primary node since sometimes it can have an action even though
			// the root node doesn't
			
			bool needs_tip = (!is_media_displaying || 
				              for_sale) &&
				(has_media || 
				 needs_tooltip(nodep) || 
				 needs_tooltip(LLSelectMgr::getInstance()->getPrimaryHoverNode()));
			
			if (show_all_object_tips || needs_tip)
			{
				LLInspector::Params p;
				p.fillFrom(LLUICtrlFactory::instance().getDefaultParams<LLInspector>());
				p.message(tooltip_msg);
				p.image.name("Inspector_I");
				p.click_callback(boost::bind(showObjectInspector, hover_object->getID(), mHoverPick.mObjectFace));
				p.time_based_media(is_time_based_media);
				p.web_based_media(is_web_based_media);
				p.media_playing(is_media_playing);
				p.click_playmedia_callback(boost::bind(playCurrentMedia, mHoverPick));
				p.click_homepage_callback(boost::bind(VisitHomePage, mHoverPick));
				p.visible_time_near(6.f);
				p.visible_time_far(3.f);
				p.delay_time(gSavedSettings.getF32("ObjectInspectorTooltipDelay"));
				p.wrap(false);
				
				LLToolTipMgr::instance().show(p);
			}
		}
	}
	
	return TRUE;
}

BOOL LLToolPie::handleToolTip(S32 local_x, S32 local_y, MASK mask)
{
	static LLCachedControl<bool> show_hover_tips(*LLUI::getInstance()->mSettingGroups["config"], "ShowHoverTips", true);
	if (!show_hover_tips) return TRUE;
	if (!mHoverPick.isValid()) return TRUE;

	LLViewerObject* hover_object = mHoverPick.getObject();
	
	// update hover object and hover parcel
	LLSelectMgr::getInstance()->setHoverObject(hover_object, mHoverPick.mObjectFace);
	
	
	std::string tooltip_msg;
	std::string line;

	if ( hover_object )
	{
		handleTooltipObject(hover_object, line, tooltip_msg  );
	}
	else if (mHoverPick.mPickType == LLPickInfo::PICK_LAND)
	{
		handleTooltipLand(line, tooltip_msg);
	}

	return TRUE;
}

static void show_inspector(const char* inspector, const char* param, const LLUUID& source_id)
{
	LLSD params;
	params[param] = source_id;
	if (LLToolTipMgr::instance().toolTipVisible())
	{
		LLRect rect = LLToolTipMgr::instance().getToolTipRect();
		params["pos"]["x"] = rect.mLeft;
		params["pos"]["y"] = rect.mTop;
	}

	LLFloaterReg::showInstance(inspector, params);
}


static void show_inspector(const char* inspector,  LLSD& params)
{
	if (LLToolTipMgr::instance().toolTipVisible())
	{
		LLRect rect = LLToolTipMgr::instance().getToolTipRect();
		params["pos"]["x"] = rect.mLeft;
		params["pos"]["y"] = rect.mTop;
	}
	
	LLFloaterReg::showInstance(inspector, params);
}


// static
void LLToolPie::showAvatarInspector(const LLUUID& avatar_id)
{
	show_inspector("inspect_avatar", "avatar_id", avatar_id);
}

// static
void LLToolPie::showObjectInspector(const LLUUID& object_id)
{
	show_inspector("inspect_object", "object_id", object_id);
}


// static
void LLToolPie::showObjectInspector(const LLUUID& object_id, const S32& object_face)
{
	LLSD params;
	params["object_id"] = object_id;
	params["object_face"] = object_face;
	show_inspector("inspect_object", params);
}

// static
void LLToolPie::playCurrentMedia(const LLPickInfo& info)
{
	//FIXME: how do we handle object in different parcel than us?
	LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
	if (!parcel) return;
	
	LLPointer<LLViewerObject> objectp = info.getObject();
	
	// Early out cases.  Must clear media hover. 
	// did not hit an object or did not hit a valid face
	if ( objectp.isNull() ||
		info.mObjectFace < 0 || 
		info.mObjectFace >= objectp->getNumTEs() )
	{
		return;
	}
	
	// Does this face have media?
	const LLTextureEntry* tep = objectp->getTE(info.mObjectFace);
	if (!tep)
		return;
	
	const LLMediaEntry* mep = tep->hasMedia() ? tep->getMediaData() : NULL;
	if(!mep)
		return;
	
	//TODO: Can you Use it? 

	LLPluginClassMedia* media_plugin = NULL;
	
	viewer_media_t media_impl = LLViewerMedia::getInstance()->getMediaImplFromTextureID(mep->getMediaID());
		
	if(media_impl.notNull() && media_impl->hasMedia())
	{
		media_plugin = media_impl->getMediaPlugin();
		if (media_plugin && media_plugin->pluginSupportsMediaTime())
		{
			if(media_impl->isMediaPlaying())
			{
				media_impl->pause();
			}
			else 
			{
				media_impl->play();
			}
		}
	}


}

// static
void LLToolPie::VisitHomePage(const LLPickInfo& info)
{
	//FIXME: how do we handle object in different parcel than us?
	LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
	if (!parcel) return;
	
	LLPointer<LLViewerObject> objectp = info.getObject();
	
	// Early out cases.  Must clear media hover. 
	// did not hit an object or did not hit a valid face
	if ( objectp.isNull() ||
		info.mObjectFace < 0 || 
		info.mObjectFace >= objectp->getNumTEs() )
	{
		return;
	}
	
	// Does this face have media?
	const LLTextureEntry* tep = objectp->getTE(info.mObjectFace);
	if (!tep)
		return;
	
	const LLMediaEntry* mep = tep->hasMedia() ? tep->getMediaData() : NULL;
	if(!mep)
		return;
	
	//TODO: Can you Use it? 
	
	LLPluginClassMedia* media_plugin = NULL;
	
	viewer_media_t media_impl = LLViewerMedia::getInstance()->getMediaImplFromTextureID(mep->getMediaID());
	
	if(media_impl.notNull() && media_impl->hasMedia())
	{
		media_plugin = media_impl->getMediaPlugin();
		
		if (media_plugin && !(media_plugin->pluginSupportsMediaTime()))
		{
			media_impl->navigateHome();
		}
	}
}

void LLToolPie::handleSelect()
{
	// tool is reselected when app gets focus, etc.
}

void LLToolPie::handleDeselect()
{
	if(	hasMouseCapture() )
	{
		setMouseCapture( FALSE );  // Calls onMouseCaptureLost() indirectly
	}
	// remove temporary selection for pie menu
	LLSelectMgr::getInstance()->setHoverObject(NULL);

	// Menu may be still up during transfer to different tool.
	// toolfocus and toolgrab should retain menu, they will clear it if needed
	MASK override_mask = gKeyboard ? gKeyboard->currentMask(TRUE) : 0;
	if (gMenuHolder && (!gMenuHolder->getVisible() || (override_mask & (MASK_ALT | MASK_CONTROL)) == 0))
	{
		// in most cases menu is useless without correct selection, so either keep both or discard both
		gMenuHolder->hideMenus();
		LLSelectMgr::getInstance()->validateSelection();
	}
}

LLTool* LLToolPie::getOverrideTool(MASK mask)
{
	if (gSavedSettings.getBOOL("EnableGrab"))
	{
		if (mask == DEFAULT_GRAB_MASK)
		{
			return LLToolGrab::getInstance();
		}
		else if (mask == (MASK_CONTROL | MASK_SHIFT))
		{
			return LLToolGrab::getInstance();
		}
	}
	return LLTool::getOverrideTool(mask);
}

void LLToolPie::stopEditing()
{
	if(	hasMouseCapture() )
	{
		setMouseCapture( FALSE );  // Calls onMouseCaptureLost() indirectly
	}
}

void LLToolPie::onMouseCaptureLost()
{
	stopCameraSteering();
	mMouseButtonDown = false;
	handleMediaMouseUp();
}

void LLToolPie::stopCameraSteering()
{
	mMouseOutsideSlop = false;
}

bool LLToolPie::inCameraSteerMode()
{
	return mMouseButtonDown && mMouseOutsideSlop;
}

// true if x,y outside small box around start_x,start_y
BOOL LLToolPie::outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y)
{
	S32 dx = x - start_x;
	S32 dy = y - start_y;

	return (dx <= -2 || 2 <= dx || dy <= -2 || 2 <= dy);
}


void LLToolPie::render()
{
	return;
}

static void handle_click_action_play()
{
	LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
	if (!parcel) return;

	LLViewerMediaImpl::EMediaStatus status = LLViewerParcelMedia::getInstance()->getStatus();
	switch(status)
	{
		case LLViewerMediaImpl::MEDIA_PLAYING:
			LLViewerParcelMedia::getInstance()->pause();
			break;

		case LLViewerMediaImpl::MEDIA_PAUSED:
			LLViewerParcelMedia::getInstance()->start();
			break;

		default:
			LLViewerParcelMedia::getInstance()->play(parcel);
			break;
	}
}

bool LLToolPie::handleMediaClick(const LLPickInfo& pick)
{
    //FIXME: how do we handle object in different parcel than us?
    LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
    LLPointer<LLViewerObject> objectp = pick.getObject();


    if (!parcel ||
        objectp.isNull() ||
        pick.mObjectFace < 0 ||
        pick.mObjectFace >= objectp->getNumTEs())
    {
        LLViewerMediaFocus::getInstance()->clearFocus();

        return false;
    }

    // Does this face have media?
    const LLTextureEntry* tep = objectp->getTE(pick.mObjectFace);
    if (!tep)
        return false;

    LLMediaEntry* mep = (tep->hasMedia()) ? tep->getMediaData() : NULL;
    if (!mep)
        return false;

    viewer_media_t media_impl = LLViewerMedia::getInstance()->getMediaImplFromTextureID(mep->getMediaID());

    if (gSavedSettings.getBOOL("MediaOnAPrimUI"))
    {
        if (!LLViewerMediaFocus::getInstance()->isFocusedOnFace(pick.getObject(), pick.mObjectFace) || media_impl.isNull())
        {
            // It's okay to give this a null impl
            LLViewerMediaFocus::getInstance()->setFocusFace(pick.getObject(), pick.mObjectFace, media_impl, pick.mNormal);
        }
        else
        {
            // Make sure keyboard focus is set to the media focus object.
            gFocusMgr.setKeyboardFocus(LLViewerMediaFocus::getInstance());
            LLEditMenuHandler::gEditMenuHandler = LLViewerMediaFocus::instance().getFocusedMediaImpl();

            media_impl->mouseDown(pick.mUVCoords, gKeyboard->currentMask(TRUE));
            mMediaMouseCaptureID = mep->getMediaID();
            setMouseCapture(TRUE);  // This object will send a mouse-up to the media when it loses capture.
        }

        return true;
    }

    LLViewerMediaFocus::getInstance()->clearFocus();

    return false;
}

bool LLToolPie::handleMediaDblClick(const LLPickInfo& pick)
{
    //FIXME: how do we handle object in different parcel than us?
    LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
    LLPointer<LLViewerObject> objectp = pick.getObject();


    if (!parcel ||
        objectp.isNull() ||
        pick.mObjectFace < 0 ||
        pick.mObjectFace >= objectp->getNumTEs())
    {
        LLViewerMediaFocus::getInstance()->clearFocus();

        return false;
    }

    // Does this face have media?
    const LLTextureEntry* tep = objectp->getTE(pick.mObjectFace);
    if (!tep)
        return false;

    LLMediaEntry* mep = (tep->hasMedia()) ? tep->getMediaData() : NULL;
    if (!mep)
        return false;

    viewer_media_t media_impl = LLViewerMedia::getInstance()->getMediaImplFromTextureID(mep->getMediaID());

    if (gSavedSettings.getBOOL("MediaOnAPrimUI"))
    {
        if (!LLViewerMediaFocus::getInstance()->isFocusedOnFace(pick.getObject(), pick.mObjectFace) || media_impl.isNull())
        {
            // It's okay to give this a null impl
            LLViewerMediaFocus::getInstance()->setFocusFace(pick.getObject(), pick.mObjectFace, media_impl, pick.mNormal);
        }
        else
        {
            // Make sure keyboard focus is set to the media focus object.
            gFocusMgr.setKeyboardFocus(LLViewerMediaFocus::getInstance());
            LLEditMenuHandler::gEditMenuHandler = LLViewerMediaFocus::instance().getFocusedMediaImpl();

            media_impl->mouseDoubleClick(pick.mUVCoords, gKeyboard->currentMask(TRUE));
            mMediaMouseCaptureID = mep->getMediaID();
            setMouseCapture(TRUE);  // This object will send a mouse-up to the media when it loses capture.
        }

        return true;
    }

    LLViewerMediaFocus::getInstance()->clearFocus();

    return false;
}

bool LLToolPie::handleMediaHover(const LLPickInfo& pick)
{
	//FIXME: how do we handle object in different parcel than us?
	LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
	if (!parcel) return false;

	LLPointer<LLViewerObject> objectp = pick.getObject();

	// Early out cases.  Must clear media hover. 
	// did not hit an object or did not hit a valid face
	if ( objectp.isNull() ||
		pick.mObjectFace < 0 || 
		pick.mObjectFace >= objectp->getNumTEs() )
	{
		LLViewerMediaFocus::getInstance()->clearHover();
		return false;
	}

	// Does this face have media?
	const LLTextureEntry* tep = objectp->getTE(pick.mObjectFace);
	if(!tep)
		return false;
	
	const LLMediaEntry* mep = tep->hasMedia() ? tep->getMediaData() : NULL;
	if (mep
		&& gSavedSettings.getBOOL("MediaOnAPrimUI"))
	{		
		viewer_media_t media_impl = LLViewerMedia::getInstance()->getMediaImplFromTextureID(mep->getMediaID());
		
		if(media_impl.notNull())
		{
			// Update media hover object
			if (!LLViewerMediaFocus::getInstance()->isHoveringOverFace(objectp, pick.mObjectFace))
			{
				LLViewerMediaFocus::getInstance()->setHoverFace(objectp, pick.mObjectFace, media_impl, pick.mNormal);
			}
			
			// If this is the focused media face, send mouse move events.
			if (LLViewerMediaFocus::getInstance()->isFocusedOnFace(objectp, pick.mObjectFace))
			{
				media_impl->mouseMove(pick.mUVCoords, gKeyboard->currentMask(TRUE));
				gViewerWindow->setCursor(media_impl->getLastSetCursor());
			}
			else
			{
				// This is not the focused face -- set the default cursor.
				gViewerWindow->setCursor(UI_CURSOR_ARROW);
			}

			return true;
		}
	}
	
	// In all other cases, clear media hover.
	LLViewerMediaFocus::getInstance()->clearHover();

	return false;
}

bool LLToolPie::handleMediaMouseUp()
{
	bool result = false;
	if(mMediaMouseCaptureID.notNull())
	{
		// Face media needs to know the mouse went up.
		viewer_media_t media_impl = LLViewerMedia::getInstance()->getMediaImplFromTextureID(mMediaMouseCaptureID);
		if(media_impl)
		{
			// This will send a mouseUp event to the plugin using the last known mouse coordinate (from a mouseDown or mouseMove), which is what we want.
			media_impl->onMouseCaptureLost();
		}
		
		mMediaMouseCaptureID.setNull();	

		result = true;		
	}	
	
	return result;
}

static void handle_click_action_open_media(LLPointer<LLViewerObject> objectp)
{
	//FIXME: how do we handle object in different parcel than us?
	LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
	if (!parcel) return;

	// did we hit an object?
	if (objectp.isNull()) return;

	// did we hit a valid face on the object?
	S32 face = LLToolPie::getInstance()->getPick().mObjectFace;
	if( face < 0 || face >= objectp->getNumTEs() ) return;
		
	// is media playing on this face?
	if (LLViewerMedia::getInstance()->getMediaImplFromTextureID(objectp->getTE(face)->getID()) != NULL)
	{
		handle_click_action_play();
		return;
	}

	std::string media_url = std::string ( parcel->getMediaURL () );
	std::string media_type = std::string ( parcel->getMediaType() );
	LLStringUtil::trim(media_url);

	LLWeb::loadURL(media_url);
}

static ECursorType cursor_from_parcel_media(U8 click_action)
{
	// HACK: This is directly referencing an impl name.  BAD!
	// This can be removed when we have a truly generic media browser that only 
	// builds an impl based on the type of url it is passed.
	
	//FIXME: how do we handle object in different parcel than us?
	ECursorType open_cursor = UI_CURSOR_ARROW;
	LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
	if (!parcel) return open_cursor;

	std::string media_url = std::string ( parcel->getMediaURL () );
	std::string media_type = std::string ( parcel->getMediaType() );
	LLStringUtil::trim(media_url);

	open_cursor = UI_CURSOR_TOOLMEDIAOPEN;

	LLViewerMediaImpl::EMediaStatus status = LLViewerParcelMedia::getInstance()->getStatus();
	switch(status)
	{
		case LLViewerMediaImpl::MEDIA_PLAYING:
			return click_action == CLICK_ACTION_PLAY ? UI_CURSOR_TOOLPAUSE : open_cursor;
		default:
			return UI_CURSOR_TOOLPLAY;
	}
}


// True if we handled the event.
BOOL LLToolPie::handleRightClickPick()
{
	S32 x = mPick.mMousePt.mX;
	S32 y = mPick.mMousePt.mY;
	MASK mask = mPick.mKeyMask;

	if (mPick.mPickType != LLPickInfo::PICK_LAND)
	{
		LLViewerParcelMgr::getInstance()->deselectLand();
	}

	// didn't click in any UI object, so must have clicked in the world
	LLViewerObject *object = mPick.getObject();
	
	// Can't ignore children here.
	LLToolSelect::handleObjectSelection(mPick, FALSE, TRUE);

	// Spawn pie menu
	if (mPick.mPickType == LLPickInfo::PICK_LAND)
	{
		LLParcelSelectionHandle selection = LLViewerParcelMgr::getInstance()->selectParcelAt( mPick.mPosGlobal );
		gMenuHolder->setParcelSelection(selection);
		gMenuLand->show(x, y);

		showVisualContextMenuEffect();

	}
	else if (mPick.mObjectID == gAgent.getID() )
	{
		if(!gMenuAvatarSelf) 
		{
			//either at very early startup stage or at late quitting stage,
			//this event is ignored.
			return TRUE ;
		}

		gMenuAvatarSelf->show(x, y);
	}
	else if (object)
	{
		gMenuHolder->setObjectSelection(LLSelectMgr::getInstance()->getSelection());

		bool is_other_attachment = (object->isAttachment() && !object->isHUDAttachment() && !object->permYouOwner());
		if (object->isAvatar() || is_other_attachment)
		{
			// Find the attachment's avatar
			while( object && object->isAttachment())
			{
				object = (LLViewerObject*)object->getParent();
				llassert(object);
			}

			if (!object)
			{
				return TRUE; // unexpected, but escape
			}

			// Object is an avatar, so check for mute by id.
			LLVOAvatar* avatar = (LLVOAvatar*)object;
			std::string name = avatar->getFullname();
			std::string mute_msg;
			if (LLMuteList::getInstance()->isMuted(avatar->getID(), avatar->getFullname()))
			{
				mute_msg = LLTrans::getString("UnmuteAvatar");
			}
			else
			{
				mute_msg = LLTrans::getString("MuteAvatar");
			}

			if (is_other_attachment)
			{
				gMenuAttachmentOther->getChild<LLUICtrl>("Avatar Mute")->setValue(mute_msg);
				gMenuAttachmentOther->show(x, y);
			}
			else
			{
				gMenuAvatarOther->getChild<LLUICtrl>("Avatar Mute")->setValue(mute_msg);
				gMenuAvatarOther->show(x, y);
			}
		}
		else if (object->isAttachment())
		{
			gMenuAttachmentSelf->show(x, y);
		}
		else
		{
			// BUG: What about chatting child objects?
			std::string name;
			LLSelectNode* node = LLSelectMgr::getInstance()->getSelection()->getFirstRootNode();
			if (node)
			{
				name = node->mName;
			}

			gMenuObject->show(x, y);

			showVisualContextMenuEffect();
		}
	}
	else if (mPick.mParticleOwnerID.notNull())
	{
		if (gMenuMuteParticle && mPick.mParticleOwnerID != gAgent.getID())
		{
			gMenuMuteParticle->show(x,y);
		}
	}

	// non UI object - put focus back "in world"
	if (gFocusMgr.getKeyboardFocus())
	{
		gFocusMgr.setKeyboardFocus(NULL);
	}

	LLTool::handleRightMouseDown(x, y, mask);
	// We handled the event.
	return TRUE;
}

void LLToolPie::showVisualContextMenuEffect()
{
	// VEFFECT: ShowPie
	LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_SPHERE, TRUE);
	effectp->setPositionGlobal(mPick.mPosGlobal);
	effectp->setColor(LLColor4U(gAgent.getEffectColor()));
	effectp->setDuration(0.25f);
}

typedef enum e_near_far
{
	NEAR_INTERSECTION,
	FAR_INTERSECTION
} ENearFar;

bool intersect_ray_with_sphere( const LLVector3& ray_pt, const LLVector3& ray_dir, const LLVector3& sphere_center, F32 sphere_radius, e_near_far near_far, LLVector3& intersection_pt)
{
	// do ray/sphere intersection by solving quadratic equation
	LLVector3 sphere_to_ray_start_vec = ray_pt - sphere_center;
	F32 B = 2.f * ray_dir * sphere_to_ray_start_vec;
	F32 C = sphere_to_ray_start_vec.lengthSquared() - (sphere_radius * sphere_radius);

	F32 discriminant = B*B - 4.f*C;
	if (discriminant >= 0.f)
	{	// intersection detected, now find closest one
		F32 t0 = (-B - sqrtf(discriminant)) / 2.f;

		if (t0 > 0.f && near_far == NEAR_INTERSECTION)
		{
			intersection_pt = ray_pt + ray_dir * t0;
		}
		else
		{
			F32 t1 = (-B + sqrtf(discriminant)) / 2.f;
			intersection_pt = ray_pt + ray_dir * t1;
		}
		return true;
	}
	else
	{	// no intersection
		return false;
	}
}

void LLToolPie::startCameraSteering()
{
	LLFirstUse::notMoving(false);
	mMouseOutsideSlop = true;

	if (gAgentCamera.getFocusOnAvatar())
	{
		mSteerPick = mPick;

		// handle special cases of steering picks
		LLViewerObject* avatar_object = mSteerPick.getObject();

		// get pointer to avatar
		while (avatar_object && !avatar_object->isAvatar())
		{
			avatar_object = (LLViewerObject*)avatar_object->getParent();
		}

		// if clicking on own avatar...
		if (avatar_object && ((LLVOAvatar*)avatar_object)->isSelf())
		{
			// ...project pick point a few meters in front of avatar
			mSteerPick.mPosGlobal = gAgent.getPositionGlobal() + LLVector3d(LLViewerCamera::instance().getAtAxis()) * 3.0;
		}

		if (!mSteerPick.isValid())
		{
			mSteerPick.mPosGlobal = gAgent.getPosGlobalFromAgent(
				LLViewerCamera::instance().getOrigin() + gViewerWindow->mouseDirectionGlobal(mSteerPick.mMousePt.mX, mSteerPick.mMousePt.mY) * 100.f);
		}

		setMouseCapture(TRUE);
		
		mMouseSteerX = mMouseDownX;
		mMouseSteerY = mMouseDownY;
		const LLVector3 camera_to_rotation_center	= gAgent.getFrameAgent().getOrigin() - LLViewerCamera::instance().getOrigin();
		const LLVector3 rotation_center_to_pick		= gAgent.getPosAgentFromGlobal(mSteerPick.mPosGlobal) - gAgent.getFrameAgent().getOrigin();

		mClockwise = camera_to_rotation_center * rotation_center_to_pick < 0.f;
		if (mMouseSteerGrabPoint) { mMouseSteerGrabPoint->markDead(); }
		mMouseSteerGrabPoint = (LLHUDEffectBlob *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BLOB, FALSE);
		mMouseSteerGrabPoint->setPositionGlobal(mSteerPick.mPosGlobal);
		mMouseSteerGrabPoint->setColor(LLColor4U(170, 210, 190));
		mMouseSteerGrabPoint->setPixelSize(5);
		mMouseSteerGrabPoint->setDuration(2.f);
	}
}

void LLToolPie::steerCameraWithMouse(S32 x, S32 y)
{
	const LLViewerCamera& camera = LLViewerCamera::instance();
	const LLCoordFrame& rotation_frame = gAgent.getFrameAgent();
	const LLVector3 pick_pos = gAgent.getPosAgentFromGlobal(mSteerPick.mPosGlobal);
	const LLVector3 pick_rotation_center = rotation_frame.getOrigin() + parallel_component(pick_pos - rotation_frame.getOrigin(), rotation_frame.getUpAxis());
	const F32 MIN_ROTATION_RADIUS_FRACTION = 0.2f;
	const F32 min_rotation_radius = MIN_ROTATION_RADIUS_FRACTION * dist_vec(pick_rotation_center, camera.getOrigin());;
	const F32 pick_distance_from_rotation_center = llclamp(dist_vec(pick_pos, pick_rotation_center), min_rotation_radius, F32_MAX);
	const LLVector3 camera_to_rotation_center = pick_rotation_center - camera.getOrigin();
	const LLVector3 adjusted_camera_pos = LLViewerCamera::instance().getOrigin() + projected_vec(camera_to_rotation_center, rotation_frame.getUpAxis());
	const F32 camera_distance_from_rotation_center = dist_vec(adjusted_camera_pos, pick_rotation_center);

	LLVector3 mouse_ray = orthogonal_component(gViewerWindow->mouseDirectionGlobal(x, y), rotation_frame.getUpAxis());
	mouse_ray.normalize();

	LLVector3 old_mouse_ray = orthogonal_component(gViewerWindow->mouseDirectionGlobal(mMouseSteerX, mMouseSteerY), rotation_frame.getUpAxis());
	old_mouse_ray.normalize();

	F32 yaw_angle;
	F32 old_yaw_angle;
	LLVector3 mouse_on_sphere;
	LLVector3 old_mouse_on_sphere;

	if (intersect_ray_with_sphere(
			adjusted_camera_pos,
			mouse_ray,
			pick_rotation_center,
			pick_distance_from_rotation_center, 
			FAR_INTERSECTION,
			mouse_on_sphere))
	{
		LLVector3 mouse_sphere_offset = mouse_on_sphere - pick_rotation_center;
		yaw_angle = atan2f(mouse_sphere_offset * rotation_frame.getLeftAxis(), mouse_sphere_offset * rotation_frame.getAtAxis());
	}
	else
	{
		yaw_angle = F_PI_BY_TWO + asinf(pick_distance_from_rotation_center / camera_distance_from_rotation_center);
		if (mouse_ray * rotation_frame.getLeftAxis() < 0.f)
		{
			yaw_angle *= -1.f;
		}
	}

	if (intersect_ray_with_sphere(
			adjusted_camera_pos,
			old_mouse_ray,
			pick_rotation_center,
			pick_distance_from_rotation_center,
			FAR_INTERSECTION,
			old_mouse_on_sphere))
	{
		LLVector3 mouse_sphere_offset = old_mouse_on_sphere - pick_rotation_center;
		old_yaw_angle = atan2f(mouse_sphere_offset * rotation_frame.getLeftAxis(), mouse_sphere_offset * rotation_frame.getAtAxis());
	}
	else
	{
		old_yaw_angle = F_PI_BY_TWO + asinf(pick_distance_from_rotation_center / camera_distance_from_rotation_center);

		if (mouse_ray * rotation_frame.getLeftAxis() < 0.f)
		{
			old_yaw_angle *= -1.f;
		}
	}

	const F32 delta_angle = yaw_angle - old_yaw_angle;

	if (mClockwise)
	{
		gAgent.yaw(delta_angle);
	}
	else
	{
		gAgent.yaw(-delta_angle);
	}

	mMouseSteerX = x;
	mMouseSteerY = y;
}