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Diffstat (limited to 'views/widget/drop_target_win.h')
-rw-r--r-- | views/widget/drop_target_win.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/views/widget/drop_target_win.h b/views/widget/drop_target_win.h new file mode 100644 index 0000000..d771c07 --- /dev/null +++ b/views/widget/drop_target_win.h @@ -0,0 +1,53 @@ +// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef VIEWS_WIDGET_DROP_TARGET_WIN_H_ +#define VIEWS_WIDGET_DROP_TARGET_WIN_H_ + +#include "base/base_drop_target.h" +#include "views/widget/drop_helper.h" + +namespace views { + +class RootView; +class View; + +// DropTargetWin takes care of managing drag and drop for WidgetWin. It +// converts Windows OLE drop messages into Views drop messages. +// +// DropTargetWin uses DropHelper to manage the appropriate view to target +// drop messages at. +class DropTargetWin : public BaseDropTarget { + public: + explicit DropTargetWin(RootView* root_view); + virtual ~DropTargetWin(); + + // If a drag and drop is underway and view is the current drop target, the + // drop target is set to null. + // This is invoked when a View is removed from the RootView to make sure + // we don't target a view that was removed during dnd. + void ResetTargetViewIfEquals(View* view); + + protected: + virtual DWORD OnDragOver(IDataObject* data_object, + DWORD key_state, + POINT cursor_position, + DWORD effect); + + virtual void OnDragLeave(IDataObject* data_object); + + virtual DWORD OnDrop(IDataObject* data_object, + DWORD key_state, + POINT cursor_position, + DWORD effect); + + private: + views::DropHelper helper_; + + DISALLOW_COPY_AND_ASSIGN(DropTargetWin); +}; + +} // namespace views + +#endif // VIEWS_WIDGET_DROP_TARGET_WIN_H_ |