53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
// Copyright (c) 2011 The Native Client Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef EXAMPLES_TUMBLER_SCRIPTING_BRIDGE_H_
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#define EXAMPLES_TUMBLER_SCRIPTING_BRIDGE_H_
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#include <map>
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#include <string>
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#include <tr1/memory>
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#include <vector>
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#include "callback.h"
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#include "ppapi/cpp/var.h"
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namespace tumbler {
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class MethodCallbackExecutor;
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// This class handles the interface between the browser and the NaCl module.
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// There is a single point of entry from the browser: postMessage(). The
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// string passed to postMessage() has this format:
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// 'function_name arg_name0:arg_0 arg_name1:arg1 ...'
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// The arguments have undetermined type; they are placed in a map of argument
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// names and values. Values are all strings, it is up to the target code to
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// do any type coercion.
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// Methods called by the scripting bridge must have a signature like this:
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// void Method(const ScriptingBridge& bridge,
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// const ParameterDictionary&);
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class ScriptingBridge {
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public:
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// Shared pointer type used in the method map.
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typedef std::tr1::shared_ptr<MethodCallbackExecutor>
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SharedMethodCallbackExecutor;
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virtual ~ScriptingBridge() {}
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// Causes |method_name| to be published as a method that can be called via
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// postMessage() from the browser. Associates this method with |method|.
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bool AddMethodNamed(const std::string& method_name,
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SharedMethodCallbackExecutor method);
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bool InvokeMethod(const std::string& method);
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private:
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typedef std::map<std::string, SharedMethodCallbackExecutor> MethodDictionary;
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MethodDictionary method_dictionary_;
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};
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} // namespace tumbler
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#endif // EXAMPLES_TUMBLER_SCRIPTING_BRIDGE_H_
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