A shocking number of LLSingleton subclasses had public constructors -- and in
several instances, were being explicitly instantiated independently of the
LLSingleton machinery. This breaks the new LLSingleton dependency-tracking
machinery. It seems only fair that if you say you want an LLSingleton, there
should only be ONE INSTANCE!

Introduce LLSINGLETON() and LLSINGLETON_EMPTY_CTOR() macros. These handle the
friend class LLSingleton<whatevah>;
and explicitly declare a private nullary constructor.

To try to enforce the LLSINGLETON() convention, introduce a new pure virtual
LLSingleton method you_must_use_LLSINGLETON_macro() which is, as you might
suspect, defined by the macro. If you declare an LLSingleton subclass without
using LLSINGLETON() or LLSINGLETON_EMPTY_CTOR() in the class body, you can't
instantiate the subclass for lack of a you_must_use_LLSINGLETON_macro()
implementation -- which will hopefully remind the coder.

Trawl through ALL LLSingleton subclass definitions, sprinkling in
LLSINGLETON() or LLSINGLETON_EMPTY_CTOR() as appropriate. Remove all explicit
constructor declarations, public or private, along with relevant 'friend class
LLSingleton<myself>' declarations. Where destructors are declared, move them
into private section as well. Where the constructor was inline but nontrivial,
move out of class body.

Fix several LLSingleton abuses revealed by making ctors/dtors private:

LLGlobalEconomy was both an LLSingleton and the base class for
LLRegionEconomy, a non-LLSingleton. (Therefore every LLRegionEconomy instance
contained another instance of the LLGlobalEconomy "singleton.") Extract
LLBaseEconomy; LLGlobalEconomy is now a trivial subclass of that.
LLRegionEconomy, as you might suspect, now derives from LLBaseEconomy.

LLToolGrab, an LLSingleton, was also explicitly instantiated by
LLToolCompGun's constructor. Extract LLToolGrabBase, explicitly instantiated,
with trivial subclass LLToolGrab, the LLSingleton instance.

(WARNING: LLToolGrabBase methods have an unnerving tendency to go after
LLToolGrab::getInstance(). I DO NOT KNOW what should be the relationship
between the instance in LLToolCompGun and the LLToolGrab singleton instance.)

LLGridManager declared a variant constructor accepting (const std::string&),
with the comment:
// initialize with an explicity grid file for testing.
As there is no evidence of this being called from anywhere, delete it.

LLChicletBar's constructor accepted an optional (const LLSD&). As the LLSD
parameter wasn't used, and as there is no evidence of it being passed from
anywhere, delete the parameter.

LLViewerWindow::shutdownViews() was checking LLNavigationBar::
instanceExists(), then deleting its getInstance() pointer -- leaving a
dangling LLSingleton instance pointer, a land mine if any subsequent code
should attempt to reference it. Use deleteSingleton() instead.

~LLAppViewer() was calling LLViewerEventRecorder::instance() and then
explicitly calling ~LLViewerEventRecorder() on that instance -- leaving the
LLSingleton instance pointer pointing to an allocated-but-destroyed instance.
Use deleteSingleton() instead.

moved object cache sampling code so that it actually gets executed
default values for stats are NaN instead of 0 in many cases

 - final solution;

collapsed Orientation enums to all use LLView::EOrientation
added ability to display stat bar horizontally

The states and dimensions of Conversations floater panes are saved in per account settings.

added get/setTargetDim() for managing layout_panel size even if its collapsed/invisible/etc

fixed layout stack so programmatic size updates will work correctly

 more layout logic fixes and added renormalization to fractional sizes to eliminate drift

 fixed layout logic when dealing with invisibile layout_panels

EXP-1824 FIX Received Items panel does not collapse correct when Height of panel is maximized in Inventory window

EXP-1758 WIP Progress spinner not shown during merketplace synch if Merchant Outbox floater was previously minimized
rewrote layout_stack resizing logic to be symmetrical

fixed button layout for icon+text
layout stack now uses floating point precision to avoid clamping panels to 0

buttons are now centered and sized according to content
created floater_test_toolbar.xml to test

EXP-890 FIX -- Resizing inbox or outbox to minimum size while open does not show present items when hte box is next opened
EXP-897 FIX -- Black box shown in UI when shrinking Inbox down in size

* Layout panel now supports "expanded_min_dim" parameter which allows a different min
  size to be specified when the layout panel is collapsed vs expanded.
* Inbox and Outbox expanded_min_dim attributes are now set to be larger than min dim
  so they can not be collapsed all the way when they are expanded.

refactored LLWindowShade into seperate file
improved layout of dialog
improved dialog resizing logic
Tab and Enter keys now work as expected in windowshade form
added "modal" capability to window shade
added HTTP Auth notifications to MOAP

converted LLLayoutStack orientation param to use named enums

- Added methods responsible for saving and loading order of buttons to bottomtray. Order is saved after each drag'n'drop to
ensure user's customization of bottomtray is not lost because of crash.

- Added additional argument to layoutstack movePanel() method which tells it to move panel to the beginning of mPanels vector
without requiring a pointer to panel before which it should be inserted.

Reviewed by Vadim Savchuk.

- Though visually user drags buttons, layout panels are really moved. To move one panel before other, new method movePanelBeforeOther() was added to layout stack.

- When drag'n'drop is finished, order of panels in layout stack mToolbarStack is changed, and also order vectors are updated in bottomtray.These are vectors mButtonsProcessOrder and mButtonsOrder. mButtonsOrder was introduced in this changeset to store order of all bottomtray buttons that may change place via drag'n'drop and should save and load it between sessions. mButtonsProcessOrder is not enough for it because it contains only buttons that may be hidden(and for example Speak button is not included in it).

- To pass mouse events from buttons to bottomtray, new class LLBottomtrayButton was added (and new widget bottomtray_button for it).

Reviewed by Vadim Savchuk.

-- updated LLLayoutStack to process "max_width" & "max_height" attributes for layout_panel.

--HG--
branch : product-engine