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      1 /*
      2  * Copyright (C) 2010 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 AccessibilityTextMarker_h
     27 #define AccessibilityTextMarker_h
     28 
     29 #include <JavaScriptCore/JSObjectRef.h>
     30 
     31 #if PLATFORM(MAC)
     32 #define SUPPORTS_AX_TEXTMARKERS 1
     33 #else
     34 #define SUPPORTS_AX_TEXTMARKERS 0
     35 #endif
     36 
     37 #if PLATFORM(MAC)
     38 #include <wtf/RetainPtr.h>
     39 typedef CFTypeRef PlatformTextMarker;
     40 typedef CFTypeRef PlatformTextMarkerRange;
     41 #else
     42 typedef void* PlatformTextMarker;
     43 typedef void* PlatformTextMarkerRange;
     44 #endif
     45 
     46 class AccessibilityUIElement;
     47 
     48 class AccessibilityTextMarker {
     49 public:
     50     AccessibilityTextMarker(PlatformTextMarker);
     51     AccessibilityTextMarker(const AccessibilityTextMarker&);
     52     ~AccessibilityTextMarker();
     53 
     54     PlatformTextMarker platformTextMarker() const;
     55 
     56     static JSObjectRef makeJSAccessibilityTextMarker(JSContextRef, const AccessibilityTextMarker&);
     57     bool isEqual(AccessibilityTextMarker*);
     58 
     59 private:
     60     static JSClassRef getJSClass();
     61 #if PLATFORM(MAC)
     62     RetainPtr<PlatformTextMarker> m_textMarker;
     63 #else
     64     PlatformTextMarker m_textMarker;
     65 #endif
     66 };
     67 
     68 class AccessibilityTextMarkerRange {
     69 public:
     70     AccessibilityTextMarkerRange(PlatformTextMarkerRange);
     71     AccessibilityTextMarkerRange(const AccessibilityTextMarkerRange&);
     72     ~AccessibilityTextMarkerRange();
     73 
     74     PlatformTextMarkerRange platformTextMarkerRange() const;
     75 
     76     static JSObjectRef makeJSAccessibilityTextMarkerRange(JSContextRef, const AccessibilityTextMarkerRange&);
     77     bool isEqual(AccessibilityTextMarkerRange*);
     78 
     79 private:
     80     static JSClassRef getJSClass();
     81 #if PLATFORM(MAC)
     82     RetainPtr<PlatformTextMarkerRange> m_textMarkerRange;
     83 #else
     84     PlatformTextMarkerRange m_textMarkerRange;
     85 #endif
     86 };
     87 
     88 AccessibilityTextMarker* toTextMarker(JSObjectRef object);
     89 AccessibilityTextMarkerRange* toTextMarkerRange(JSObjectRef object);
     90 
     91 #if !SUPPORTS_AX_TEXTMARKERS
     92 inline AccessibilityTextMarker::AccessibilityTextMarker(PlatformTextMarker) { }
     93 inline AccessibilityTextMarker::AccessibilityTextMarker(const AccessibilityTextMarker&) { }
     94 inline AccessibilityTextMarker::~AccessibilityTextMarker() { }
     95 inline bool AccessibilityTextMarker::isEqual(AccessibilityTextMarker*) { return false; }
     96 inline PlatformTextMarker AccessibilityTextMarker::platformTextMarker() const { return m_textMarker; }
     97 
     98 inline AccessibilityTextMarkerRange::AccessibilityTextMarkerRange(PlatformTextMarkerRange) { }
     99 inline AccessibilityTextMarkerRange::AccessibilityTextMarkerRange(const AccessibilityTextMarkerRange&) { }
    100 inline AccessibilityTextMarkerRange::~AccessibilityTextMarkerRange() { }
    101 inline bool AccessibilityTextMarkerRange::isEqual(AccessibilityTextMarkerRange*) { return false; }
    102 inline PlatformTextMarkerRange AccessibilityTextMarkerRange::platformTextMarkerRange() const { return m_textMarkerRange; }
    103 #endif
    104 
    105 #endif // AccessibilityUIElement_h
    106