1 // Copyright (c) 2010 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 CHROME_FRAME_INFOBARS_INTERNAL_HOST_WINDOW_MANAGER_H_ 6 #define CHROME_FRAME_INFOBARS_INTERNAL_HOST_WINDOW_MANAGER_H_ 7 8 #include "base/basictypes.h" 9 #include "chrome_frame/infobars/internal/subclassing_window_with_delegate.h" 10 11 class DisplacedWindowManager; 12 13 // HostWindowManager observes the HWND passed to Initialize and: 14 // 1) Monitors the lifecycle of a specific child window (as identified by 15 // FindDisplacedWindow). 16 // 2) Intercepts NCCALCSIZE events on the child window, allowing the client to 17 // modify the child window's requested dimensions. 18 // 3) Allows the client to request a recalculation of the child window's 19 // dimensions (resulting in a callback as in [2]). 20 // 21 // See documentation of SubclasingWindowWithDelegate for further information. 22 class HostWindowManager 23 : public SubclassingWindowWithDelegate<HostWindowManager> { 24 public: 25 HostWindowManager(); 26 virtual ~HostWindowManager(); 27 28 // Triggers an immediate re-evaluation of the dimensions of the displaced 29 // window. Delegate::AdjustDisplacedWindowDimensions will be called with the 30 // natural dimensions of the displaced window. 31 void UpdateLayout(); 32 33 private: 34 class DisplacedWindowDelegate; 35 friend class DisplacedWindowDelegate; 36 37 // Finds the window to be displaced and instantiate a DisplacedWindowManager 38 // for it if one does not already exist. Returns true if 39 // displaced_window_manager_ is non-NULL at the end of the call. 40 bool FindDisplacedWindow(HWND old_window); 41 42 // Subclasses and observes changes to the displaced window. 43 DisplacedWindowManager* displaced_window_manager_; 44 45 DISALLOW_COPY_AND_ASSIGN(HostWindowManager); 46 }; // class HostWindowManager 47 48 #endif // CHROME_FRAME_INFOBARS_INTERNAL_HOST_WINDOW_MANAGER_H_ 49
