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// Copyright (c) 2006-2008 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 CHROME_BROWSER_AUTOCOMPLETE_EDIT_DROP_TARGET_H_
#define CHROME_BROWSER_AUTOCOMPLETE_EDIT_DROP_TARGET_H_
#include "base/base_drop_target.h"
class AutocompleteEdit;
// EditDropTarget is the IDropTarget implementation installed on
// AutocompleteEdit. EditDropTarget prefers URL over plain text. A drop of a URL
// replaces all the text of the edit and navigates immediately to the URL. A
// drop of plain text from the same edit either copies or moves the selected
// text, and a drop of plain text from a source other than the edit does a paste
// and go.
class EditDropTarget : public BaseDropTarget {
public:
explicit EditDropTarget(AutocompleteEdit* edit);
protected:
virtual DWORD OnDragEnter(IDataObject* data_object,
DWORD key_state,
POINT cursor_position,
DWORD effect);
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:
// If dragging a string, the drop highlight position of the edit is reset
// based on the mouse position.
void UpdateDropHighlightPosition(const POINT& cursor_screen_position);
// Resets the visual drop indicates we install on the edit.
void ResetDropHighlights();
// The edit we're the drop target for.
AutocompleteEdit* edit_;
// If true, the drag session contains a URL.
bool drag_has_url_;
// If true, the drag session contains a string. If drag_has_url_ is true,
// this is false regardless of whether the clipboard has a string.
bool drag_has_string_;
DISALLOW_EVIL_CONSTRUCTORS(EditDropTarget);
};
#endif // CHROME_BROWSER_AUTOCOMPLETE_EDIT_DROP_TARGET_H_
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