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| 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 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 WebTextHelpers_h |
| 32 #define WebTextHelpers_h |
| 33 |
| 34 #include "../WebPrivateOwnPtr.h" |
| 35 |
| 36 namespace WebKit { |
| 37 class WebFrame; |
| 38 class WebRect; |
| 39 class WebString; |
| 40 class WebTextHelperImpl; |
| 41 } |
| 42 |
| 43 namespace WebKit { |
| 44 |
| 45 // This class is a helper for implementing part of the NSTextInput protocol on |
| 46 // the renderer side. In the future it should be generalized to support input |
| 47 // method composition across all platforms. |
| 48 class WebTextHelper { |
| 49 public: |
| 50 explicit WebTextHelper(WebFrame* frame); |
| 51 ~WebTextHelper(); |
| 52 |
| 53 // Returns the character index in the Frame's text stream over where the |
| 54 // mouse pointer is. The coordinate is in WebKit's coordinate system (upper- |
| 55 // left origin). |
| 56 uint characterIndexForPoint(int x, int y); |
| 57 |
| 58 // Returns the frame rectangle for a given substring range in the Frame's |
| 59 // text stream. |
| 60 WebRect firstRectForRange(uint location, uint length); |
| 61 |
| 62 // Returns a serialized NSAttributedString (via NSData) that is a substring |
| 63 // of the Frame at the given range. |
| 64 WebString substringInRange(uint location, uint length); |
| 65 |
| 66 protected: |
| 67 WebPrivateOwnPtr<WebTextHelperImpl> m_private; |
| 68 }; |
| 69 |
| 70 } // namespace WebKit |
| 71 |
| 72 #endif |
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