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 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 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#if ENABLE(DELETION_UI) 30 31#include "DeleteButton.h" 32#include "Editor.h" 33#include "Frame.h" 34 35namespace WebCore { 36 37class DeleteButton; 38class HTMLElement; 39class RenderObject; 40class VisibleSelection; 41 42class DeleteButtonController { 43 WTF_MAKE_NONCOPYABLE(DeleteButtonController); WTF_MAKE_FAST_ALLOCATED; 44public: 45 explicit DeleteButtonController(Frame&); 46 47 HTMLElement* containerElement() const { return m_containerElement.get(); } 48 49 void respondToChangedSelection(const VisibleSelection& oldSelection); 50 51 void deviceScaleFactorChanged(); 52 53 void show(HTMLElement*); 54 void hide(); 55 56 void deleteTarget(); 57 58private: 59 static const char* const buttonElementIdentifier; 60 static const char* const outlineElementIdentifier; 61 static const char* const containerElementIdentifier; 62 63 void enable(); 64 void disable(); 65 friend class DeleteButtonControllerDisableScope; 66 67 void createDeletionUI(); 68 bool enabled() const { return (!m_disableStack); } 69 70 Frame& m_frame; 71 RefPtr<HTMLElement> m_target; 72 RefPtr<HTMLElement> m_containerElement; 73 RefPtr<HTMLElement> m_outlineElement; 74 RefPtr<DeleteButton> m_buttonElement; 75 bool m_wasStaticPositioned; 76 bool m_wasAutoZIndex; 77 unsigned m_disableStack; 78}; 79 80class DeleteButtonControllerDisableScope { 81public: 82 DeleteButtonControllerDisableScope(Frame* frame) 83 : m_frame(frame) 84 { 85 if (frame) 86 frame->editor().deleteButtonController().disable(); 87 } 88 89 ~DeleteButtonControllerDisableScope() 90 { 91 if (m_frame) 92 m_frame->editor().deleteButtonController().enable(); 93 } 94 95private: 96 RefPtr<Frame> m_frame; 97}; 98 99} // namespace WebCore 100 101#endif // ENABLE(DELETION_UI) 102 103#endif // DeleteButtonController_h 104