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