1 /* 2 * Copyright (C) 2011 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 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. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25 #ifndef WebDOMTextContentWalker_h 26 #define WebDOMTextContentWalker_h 27 28 #include "../WebPrivateOwnPtr.h" 29 #include "../WebRange.h" 30 #include "../WebString.h" 31 32 namespace WebCore { 33 class DOMTextContentWalker; 34 class Node; 35 } 36 37 namespace WebKit { 38 39 class WebHitTestInfo; 40 41 class WebDOMTextContentWalker { 42 public: 43 WebDOMTextContentWalker(); 44 ~WebDOMTextContentWalker(); 45 46 // Creates a new text content walker centered in the position described by the hit test. 47 // The maximum length of the contents retrieved by the walker is defined by maxLength. 48 WEBKIT_API WebDOMTextContentWalker(const WebHitTestInfo&, size_t maxLength); 49 50 // Creates a new text content walker centered in the selected offset of the given text node. 51 // The maximum length of the contents retrieved by the walker is defined by maxLength. 52 WEBKIT_API WebDOMTextContentWalker(WebCore::Node* textNode, size_t offset, size_t maxLength); 53 54 // Text content retrieved by the walker. 55 WEBKIT_API WebString content() const; 56 57 // Position of the initial text node offset in the content string. 58 WEBKIT_API size_t hitOffsetInContent() const; 59 60 // Convert start/end positions in the content text string into a WebKit text range. 61 WEBKIT_API WebRange contentOffsetsToRange(size_t startInContent, size_t endInContent); 62 63 protected: 64 WebPrivateOwnPtr<WebCore::DOMTextContentWalker> m_private; 65 }; 66 67 } // namespace WebKit 68 69 #endif 70