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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_VIEWS_LAYOUT_MANAGER_H__
#define CHROME_VIEWS_LAYOUT_MANAGER_H__
#include <atlbase.h>
#include <atlapp.h>
#include <atlmisc.h>
namespace ChromeViews {
class View;
/////////////////////////////////////////////////////////////////////////////
//
// LayoutManager interface
//
// The LayoutManager interface provides methods to handle the sizing of
// the children of a View according to implementation-specific heuristics.
//
/////////////////////////////////////////////////////////////////////////////
class LayoutManager {
public:
virtual ~LayoutManager() {}
// Notification that this LayoutManager has been installed on a particular
// host.
virtual void Installed(View* host) {}
// Notification that this LayoutManager has been uninstalled on a particular
// host.
virtual void Uninstalled(View* host) {}
// Lay out the children of |host| according to implementation-specific
// heuristics. The graphics used during painting is provided to allow for
// string sizing.
virtual void Layout(View* host) = 0;
// Return the preferred size which is the size required to give each
// children their respective preferred size.
virtual void GetPreferredSize(View* host, CSize* out) = 0;
// Returns the preferred height for the specified width. The default
// implementation returns the value from GetPreferredSize.
virtual int GetPreferredHeightForWidth(View* host, int width);
// Notification that a view has been added.
virtual void ViewAdded(View* host, View* view) {}
// Notification that a view has been removed.
virtual void ViewRemoved(View* host, View* view) {}
};
}
#endif // CHROME_VIEWS_LAYOUT_MANAGER_H__
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