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----- XContextWindow
-- Any lua value can be context of the window.
-- When the value or in case of a composite context any of the internal values are modified the window receives OnContextUpdate call.
DefineClass.XContextWindow = {
__parents = { "XWindow" },
properties = {
{ category = "Interaction", id = "ContextUpdateOnOpen", editor = "bool", default = false, },
{ category = "Interaction", id = "OnContextUpdate", editor = "func", params = "self, context, ...", },
},
context = false,
}
function XContextWindow:Init(parent, context)
if context then
self:SetContext(context, false)
end
end
function XContextWindow:Done()
self:SetContext(nil, false)
end
function XContextWindow:Open(...)
XWindow.Open(self, ...)
if self.ContextUpdateOnOpen then
procall(self.OnContextUpdate, self, self.context, "open")
end
end
function XContextWindow:OnContextUpdate(context, ...)
end
function XContextWindow:GetContext()
return self.context
end
function XContextWindow:GetParentContext()
local parent = self.parent
if parent then
return parent:GetContext()
end
end
function XContextWindow:SetContext(context, update)
if self.context == (context or false) and not update then return end
ForEachObjInContext(self.context, function (obj, self)
local windows = ObjToWindows[obj]
if windows then
table.remove_entry(windows, self)
if #windows == 0 then
ObjToWindows[obj] = nil
end
end
end, self)
self.context = context
ForEachObjInContext(context, function (obj, self)
local windows = ObjToWindows[obj]
if windows then
windows[#windows + 1] = self
else
ObjToWindows[obj] = { self }
end
end, self)
if update ~= false then
procall(self.OnContextUpdate, self, context, update or "set")
end
end
--[[function XContextWindow:ResolveValue(id)
local value = ResolveValue(self.context, id)
if value ~= nil then return value end
return PropertyObject.ResolveValue(self, id)
end]]
----- globals
if FirstLoad then
ObjToWindows = setmetatable({}, weak_keys_meta)
XContextUpdateLogging = false
end
function XContextUpdate(context, ...)
if not context then return end
for _, window in ipairs(ObjToWindows[context] or empty_table) do
if XContextUpdateLogging then
print("ContextUpdate:", FormatWindowPath(window))
end
procall(window.OnContextUpdate, window, window.context, ...)
end
end
function OnMsg.ObjModified(obj)
XContextUpdate(obj, "modified")
end
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