1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_PUBLIC_COMMON_CHILD_PROCESS_HOST_DELEGATE_H_ 6 #define CONTENT_PUBLIC_COMMON_CHILD_PROCESS_HOST_DELEGATE_H_ 7 8 #include <string> 9 10 #include "content/common/content_export.h" 11 #include "ipc/ipc_listener.h" 12 13 namespace content { 14 15 // Interface that all users of ChildProcessHost need to provide. 16 class ChildProcessHostDelegate : public IPC::Listener { 17 public: ~ChildProcessHostDelegate()18 virtual ~ChildProcessHostDelegate() {} 19 20 // Delegates return true if it's ok to shut down the child process (which is 21 // the default return value). The exception is if the host is in the middle of 22 // sending a request to the process, in which case the other side might think 23 // it's ok to shutdown, when really it's not. 24 CONTENT_EXPORT virtual bool CanShutdown(); 25 26 // Called when the child process unexpected closes the IPC channel. Delegates 27 // would normally delete the object in this case. OnChildDisconnected()28 virtual void OnChildDisconnected() {} 29 }; 30 31 }; // namespace content 32 33 #endif // CONTENT_PUBLIC_COMMON_CHILD_PROCESS_HOST_DELEGATE_H_ 34