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      1 /*
      2  * Copyright (C) 2009 Google 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef WebRange_h
     32 #define WebRange_h
     33 
     34 #include "../platform/WebCommon.h"
     35 #include "../platform/WebVector.h"
     36 
     37 #if BLINK_IMPLEMENTATION
     38 namespace WebCore { class Range; }
     39 namespace WTF { template <typename T> class PassRefPtr; }
     40 #endif
     41 
     42 namespace blink {
     43 
     44 struct WebFloatQuad;
     45 class WebFrame;
     46 class WebNode;
     47 class WebRangePrivate;
     48 class WebString;
     49 
     50 // Provides readonly access to some properties of a DOM range.
     51 class WebRange {
     52 public:
     53     ~WebRange() { reset(); }
     54 
     55     WebRange() : m_private(0) { }
     56     WebRange(const WebRange& r) : m_private(0) { assign(r); }
     57     WebRange& operator=(const WebRange& r)
     58     {
     59         assign(r);
     60         return *this;
     61     }
     62 
     63     BLINK_EXPORT void reset();
     64     BLINK_EXPORT void assign(const WebRange&);
     65 
     66     bool isNull() const { return !m_private; }
     67 
     68     BLINK_EXPORT int startOffset() const;
     69     BLINK_EXPORT int endOffset() const;
     70     BLINK_EXPORT WebNode startContainer(int& exceptionCode) const;
     71     BLINK_EXPORT WebNode endContainer(int& exceptionCode) const;
     72 
     73     BLINK_EXPORT WebString toHTMLText() const;
     74     BLINK_EXPORT WebString toPlainText() const;
     75 
     76     BLINK_EXPORT WebRange expandedToParagraph() const;
     77 
     78     BLINK_EXPORT static WebRange fromDocumentRange(WebFrame*, int start, int length);
     79 
     80     BLINK_EXPORT WebVector<WebFloatQuad> textQuads() const;
     81 
     82 #if BLINK_IMPLEMENTATION
     83     WebRange(const WTF::PassRefPtr<WebCore::Range>&);
     84     WebRange& operator=(const WTF::PassRefPtr<WebCore::Range>&);
     85     operator WTF::PassRefPtr<WebCore::Range>() const;
     86 #endif
     87 
     88 private:
     89     void assign(WebRangePrivate*);
     90     WebRangePrivate* m_private;
     91 };
     92 
     93 } // namespace blink
     94 
     95 #endif
     96