85 lines
2.3 KiB
Lua
85 lines
2.3 KiB
Lua
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EventManager = {}
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EventManager.__index = EventManager
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function EventManager.New()
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local o = {}
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setmetatable(o, EventManager)
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o.m_listeners = {}
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return o
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end
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function EventManager:AddEvent(sEventName, fListener, pObj, bOnce)
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if not self.m_listeners[sEventName] then
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if not sEventName then
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LogError("EventManager:AddEvent的sEventName有问题")
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end
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self.m_listeners[sEventName] = {}
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end
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table.insert(self.m_listeners[sEventName],{ func = fListener, obj = pObj, once = bOnce } )
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end
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function EventManager:RemoveEvent(sEventName, fListener, pObj)
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if not self.m_listeners[sEventName] then
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return
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end
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local v
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for i=1, #self.m_listeners[sEventName] do
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v = self.m_listeners[sEventName][i]
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if v.func == fListener and pObj == v.obj then
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table.remove(self.m_listeners[sEventName], i)
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break
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end
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end
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end
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function EventManager:DispatchEvent(sEventName,...)
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if not self.m_listeners[sEventName] then
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return
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end
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local v
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local flag
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local msg
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local args = {...}
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local dispatcher = {}
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for i=1, #self.m_listeners[sEventName] do
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dispatcher[i] = self.m_listeners[sEventName][i]
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end
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for i=1, #dispatcher do --因为分发的事件可能修改self.m_listeners结构，所以把数据记录到一个缓存分发器，利用该分发器分发事件
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v = dispatcher[i]
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if not v.obj then
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local func = function() v.func(unpack(args, 1, table.maxn(args))) end
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flag, msg = xpcall(func, tolua.traceback)
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else
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local func = function() v.func(v.obj, unpack(args, 1, table.maxn(args))) end
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flag, msg = xpcall(func, tolua.traceback)
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end
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if not flag then
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--table.remove(self.m_listeners[sEventName],i)
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end
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if v.once then
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self:RemoveEvent(sEventName, v)
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end
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end
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end
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function EventManager:HasEvent(sEventName, func)
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if not self.m_listeners[sEventName] or not func then
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return false
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end
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local v
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for i=1, #self.m_listeners[sEventName] do
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v = self.m_listeners[sEventName][i]
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if v.func == func then
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return true
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end
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end
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return false
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end
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function EventManager:ClearEvent()
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self.m_listeners={}
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end
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