72 lines
1.9 KiB
Lua
72 lines
1.9 KiB
Lua
local module = {};
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function module.init(shared)
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local new = {};
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local insert = table.insert;
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local mount = {};
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mount.__index = mount;
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function mount:unmount()
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local this = self.this;
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local typeThis = type(this);
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if typeThis == "userdata" then
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this:Destroy();
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elseif typeThis == "table" then
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pcall(function()
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this.Parent = nil;
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end);
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local destroyThis = this.Destroy;
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if destroyThis then
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pcall(destroyThis,this);
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end
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--if sef.to when
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-- todo for remove child on parent
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end
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end
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function new.getHolder(item)
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return (type(item) == "table") and (item._holder or item.holder or item.__holder) or item;
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end
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local getHolder = new.getHolder
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-- we should add plugin support
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function new.mount(to,this,inst)
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local thisO = this;
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if type(this) == "table" then
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thisO = this.__object;
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local parent = rawget(this,"__parent");
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if type(parent) == "table" then
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local parentChild = rawget(parent,"__child");
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if parentChild then
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for i,v in pairs(parentChild) do
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if v == this then
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parentChild[i] = nil;
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end
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end
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end
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end
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rawset(this,"__parent",to);
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end
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if thisO then
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thisO.Parent = inst or getHolder(to);
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end
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if type(to) == "table" then
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local child = rawget(to,"__child");
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if not child then
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child = {};
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rawset(to,"__child",child);
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end
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insert(child,this);
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end
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return setmetatable({to = to,this = this},mount);
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end
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setmetatable(new,{
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__call = function (self,...)
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return new.mount(...);
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end;
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});
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return new;
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end
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return module;
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