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51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
#pragma once
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#ifndef ES_CORE_ASYNC_HANDLE_H
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#define ES_CORE_ASYNC_HANDLE_H
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#include <string>
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enum AsyncHandleStatus
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{
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ASYNC_IN_PROGRESS,
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ASYNC_ERROR,
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ASYNC_DONE
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};
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// Handle for some asynchronous operation.
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class AsyncHandle
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{
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public:
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AsyncHandle() : mStatus(ASYNC_IN_PROGRESS) {};
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virtual ~AsyncHandle() {};
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virtual void update() = 0;
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// Update and return the latest status.
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inline AsyncHandleStatus status() { update(); return mStatus; }
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// User-friendly string of our current status. Will return error message if status() == SEARCH_ERROR.
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inline std::string getStatusString()
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{
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switch(mStatus)
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{
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case ASYNC_IN_PROGRESS:
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return "in progress";
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case ASYNC_ERROR:
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return mError;
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case ASYNC_DONE:
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return "done";
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default:
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return "something impossible has occured; row, row, fight the power";
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}
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}
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protected:
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inline void setStatus(AsyncHandleStatus status) { mStatus = status; }
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inline void setError(const std::string& error) { setStatus(ASYNC_ERROR); mError = error; }
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std::string mError;
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AsyncHandleStatus mStatus;
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};
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#endif // ES_CORE_ASYNC_HANDLE_H
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