1 /*
2  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #ifndef DeleteButtonController_h
27 #define DeleteButtonController_h
28 
29 #include "DeleteButton.h"
30 
31 namespace WebCore {
32 
33 class DeleteButton;
34 class Frame;
35 class HTMLElement;
36 class RenderObject;
37 class VisibleSelection;
38 
39 class DeleteButtonController {
40     WTF_MAKE_NONCOPYABLE(DeleteButtonController); WTF_MAKE_FAST_ALLOCATED;
41 public:
42     DeleteButtonController(Frame*);
43 
44     static const char* const containerElementIdentifier;
45 
target()46     HTMLElement* target() const { return m_target.get(); }
containerElement()47     HTMLElement* containerElement() const { return m_containerElement.get(); }
48 
49     void respondToChangedSelection(const VisibleSelection& oldSelection);
50 
51     void show(HTMLElement*);
52     void hide();
53 
enabled()54     bool enabled() const { return (m_disableStack == 0); }
55     void enable();
56     void disable();
57 
58     void deleteTarget();
59 
60 private:
61     static const char* const buttonElementIdentifier;
62     static const char* const outlineElementIdentifier;
63 
64     void createDeletionUI();
65 
66     Frame* m_frame;
67     RefPtr<HTMLElement> m_target;
68     RefPtr<HTMLElement> m_containerElement;
69     RefPtr<HTMLElement> m_outlineElement;
70     RefPtr<DeleteButton> m_buttonElement;
71     bool m_wasStaticPositioned;
72     bool m_wasAutoZIndex;
73     unsigned m_disableStack;
74 };
75 
76 } // namespace WebCore
77 
78 #endif
79