local Component = class("Component")

function Component:ctor(name)
    self.name_ = name
end

function Component:getName()
    return self.name_
end

function Component:getTarget()
    return self.target_
end

function Component:exportMethods_(methods)
    self.exportedMethods_ = methods
    local target = self.target_
    local name = self.name_
    local com = self
    for _, key in ipairs(methods) do
        if not target[key] then
            target[key] = function(__, ...)
                local r = {com[key](self, ...)}
                if r[1] == self then r[1] = target end
                return unpack(r)
            end
        end
    end
    return self
end

function Component:bind_(target)
	if self.target_ then
		return;
	end
    self.target_ = target
    self:onActivate(target)
end

function Component:unbind_()
	if self.target_ == nil then
		return;
	end
    if self.exportedMethods_ then
        local target = self.target_
        for _, key in ipairs(self.exportedMethods_) do
            target[key] = nil
        end
    end
    self:onDeactivate()
	self.target_ = nil;
end

function Component:onActivate()
end

function Component:onDeactivate()
end

return Component