khanat-client-data-NeL/data/ryz/ryz_ring/r2_ui_toolbar_base.lua

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2016-05-06 10:56:20 +00:00
----------------------------
-- GENERIC TOOLBAR SYSTEM --
----------------------------
-- Generic code for toolbar
--
-- A toolbar is a set of 'buttons' that triggers 'commands'
-- A 'command' is a structure returned by a function like baseClass.getAvailableCommand (see there for doc)
-- A 'button' is a widget thet may have any form you want, derivers should just tell how to setup a button from a command
--
-- Usage :
--
-- -- 1<>) creation
-- myToolBar = r2.newToolbar()
--
-- -- 2<>) definition of toolbar behavior. Function that should be given by the deriver are given in section below
-- function myTooBar:getToolbar()
-- ...
-- end
-- function myToolbar ...
--
-- NB : command index are starting at 0 in the ui, and at 1 in lua
--
--
--
local toolbarTemplate = {}
------------------------------------
-- TO BE IMPLEMENTED BY DERIVERS --
------------------------------------
-- return a reference on the toolbar ui
function toolbarTemplate:getToolbar()
assert(false) -- ! SHOULD BE IMPLEMENTED BY DERIVER
end
-- return the max number of commands that the toolbar may contains
function toolbarTemplate:getMaxNumCommands()
assert(false) -- ! SHOULD BE IMPLEMENTED BY DERIVER
end
-- get a button from its index in the toolbar (starting from 0)
function toolbarTemplate:getButton(index)
assert(false) -- ! SHOULD BE IMPLEMENTED BY DERIVER
end
-- setup a button from a commandDesc.
function toolbarTemplate:setupButton(button, commandDesc, buttonIndex)
assert(false) -- ! SHOULD BE IMPLEMENTED BY DERIVER
end
-- retrieve a command list for the given instance
function toolbarTemplate:getAvailableCommands(instance, dest)
assert(false) -- ! SHOULD BE IMPLEMENTED BY DERIVER
end
-----------------------
-- PUBLIC INTERFACE --
-----------------------
----------------------------------------------------------------------------------------------------
-- Setup the contextual toolbar for the given instance
-- passing nil just hides the toolbar
function toolbarTemplate:setupToolbar(instance)
assert(false)
end
----------------------------------------------------------------------------------------------------
-- run a command in the toolbar from its index
function toolbarTemplate:runCommand(index)
assert(false)
end
----------------------------------------------------------------------------------------------------
-- call this to create a new toolbar, then specialize it
function r2.newToolbar()
local tb = clone(toolbarTemplate)
-- description of each command
tb.ToolbarCommands={}
-- map index of each command to the matching toolbar button
tb.IndexToButton = {}
-- Current instance for which this contextual toolbar is displayed
tb.CurrentInstance = nil
-- Index of last triggered command
tb.LastTriggeredCommandIndex = nil
-- Cache for current commands
tb.CurrentCommands = {}
-- Command id to button
tb.CommandIdToIndex = {}
----------------------------------------------------------------------------
-- Setup the contextual toolbar for the given instance
-- passing nil just hides the toolbar
function tb:setupToolbar(instance)
self.CurrentInstance = instance
-- clear current list of commands
table.clear(self.ToolbarCommands)
table.clear(self.CurrentCommands)
table.clear(self.IndexToButton)
table.clear(self.CommandIdToIndex)
self.LastTriggeredCommandIndex = nil
local toolbar = self:getToolbar()
local buttonList = toolbar:find("buttons")
if not instance then
toolbar.active = false
return
end
local commands = self.CurrentCommands
table.clear(commands)
self:getAvailableCommands(instance, commands)
assert(self.ToolbarCommands)
toolbar.active = true
local buttonIndex = 0
local maxNumButtons = self:getMaxNumCommands()
for index, commandDesc in pairs(commands) do
local button
if commandDesc.ButtonBitmap ~= "" and commandDesc.ButtonBitmap ~= nil then
-- new button wanted
local button = self:getButton(buttonIndex)
if not button then
inspect(buttonList)
assert(button)
end
self:setupButton(button, commandDesc, buttonIndex)
self.IndexToButton[index] = button
self.ToolbarCommands[buttonIndex + 1] = commandDesc
self.CommandIdToIndex[commandDesc.Id] = index
buttonIndex = buttonIndex + 1
if buttonIndex == maxNumButtons then break end
end
end
-- hide buttons that are not visible anymore
for index = buttonIndex, maxNumButtons - 1 do
local button = self:getButton(index)
button.active = false
end
end
----------------------------------------------------------------------------
-- Run the command with the given index
function tb:runCommand(index)
assert(self.CurrentInstance)
assert(self.ToolbarCommands[index] ~= nil)
self.LastTriggeredCommandIndex = index
-- do actual call
self.ToolbarCommands[index].DoCommand(self.CurrentInstance)
end
return tb
end
----------------------------------------------------------------------------
-- Private : execute a command triggered by a toolbar button
function r2.runBaseToolbarCommand(toolbar, index)
assert(toolbar) -- deriver should provide the "Toolbar" field in the groups containing control that can trigger commands!
toolbar:runCommand(index + 1)
end