win8/delegate_execute/delegate_execute_operation.h

   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 WIN8_DELEGATE_EXECUTE_DELEGATE_EXECUTE_OPERATION_H_
   6 #define WIN8_DELEGATE_EXECUTE_DELEGATE_EXECUTE_OPERATION_H_
   7
   8 #include <windows.h>
   9 #include <atldef.h>
  10
  11 #include "base/basictypes.h"
  12 #include "base/files/file_path.h"
  13 #include "base/strings/string16.h"
  14
  15 namespace base {
  16 class CommandLine;
  17 }
  18
  19 namespace delegate_execute {
  20
  21 // Parses a portion of the DelegateExecute handler's command line to determine
  22 // the desired operation. The operation type is decided by looking at the
  23 // command line. The operations are:
  24 // DELEGATE_EXECUTE:
  25 //   When the delegate_execute.exe is invoked by windows when a chrome
  26 //   activation via the shell, possibly using ShellExecute. Control must
  27 //   be given to ATLs WinMain.
  28 // RELAUNCH_CHROME:
  29 //   When the delegate_execute.exe is launched by chrome, when chrome needs
  30 //   to re-launch itself. The required command line parameters are:
  31 //     --relaunch-shortcut=<PathToShortcut>
  32 //     --wait-for-mutex=<MutexNamePid>
  33 //   The PathToShortcut must be the fully qualified file name to the chrome
  34 //   shortcut that has the appId and other 'metro ready' parameters.
  35 //   The MutexNamePid is a mutex name that also encodes the process id and
  36 //   must follow the format <A>.<B>.<pid> where A and B are arbitray strings
  37 //   (usually chrome.relaunch) and pid is the process id of chrome.
  38 class DelegateExecuteOperation {
  39  public:
  40   enum OperationType {
  41     DELEGATE_EXECUTE,
  42     RELAUNCH_CHROME,
  43   };
  44
  45   DelegateExecuteOperation();
  46   ~DelegateExecuteOperation();
  47
  48   bool Init(const base::CommandLine* cmd_line);
  49
  50   OperationType operation_type() const {
  51     return operation_type_;
  52   }
  53
  54   const base::string16& relaunch_flags() const {
  55     return relaunch_flags_;
  56   }
  57
  58   const base::string16& mutex() const {
  59     return mutex_;
  60   }
  61
  62   // Returns the process id of the parent or 0 on failure.
  63   DWORD GetParentPid() const;
  64
  65   const base::FilePath& shortcut() const {
  66     return relaunch_shortcut_;
  67   }
  68
  69  private:
  70   OperationType operation_type_;
  71   base::string16 relaunch_flags_;
  72   base::FilePath relaunch_shortcut_;
  73   base::string16 mutex_;
  74
  75   DISALLOW_COPY_AND_ASSIGN(DelegateExecuteOperation);
  76 };
  77
  78 }  // namespace delegate_execute
  79
  80 #endif  // WIN8_DELEGATE_EXECUTE_DELEGATE_EXECUTE_OPERATION_H_