third_party/WebKit/Source/web/WebSurroundingText.cpp

   1 /*
   2  * Copyright (C) 2012 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 #include "config.h"
  26 #include "public/web/WebSurroundingText.h"
  27
  28 #include "core/dom/Element.h"
  29 #include "core/dom/Node.h"
  30 #include "core/dom/Range.h"
  31 #include "core/dom/Text.h"
  32 #include "core/editing/SurroundingText.h"
  33 #include "core/editing/VisiblePosition.h"
  34 #include "core/layout/LayoutObject.h"
  35 #include "public/platform/WebPoint.h"
  36 #include "public/web/WebHitTestResult.h"
  37
  38 namespace blink {
  39
  40 void WebSurroundingText::initialize(const WebNode& webNode, const WebPoint& nodePoint, size_t maxLength)
  41 {
  42     const Node* node = webNode.constUnwrap<Node>();
  43     if (!node || !node->layoutObject())
  44         return;
  45
  46     m_private.reset(new SurroundingText(createVisiblePosition(node->layoutObject()->positionForPoint(static_cast<IntPoint>(nodePoint))).deepEquivalent().parentAnchoredEquivalent(), maxLength));
  47 }
  48
  49 void WebSurroundingText::initialize(const WebRange& webRange, size_t maxLength)
  50 {
  51     if (RefPtrWillBeRawPtr<Range> range = static_cast<PassRefPtrWillBeRawPtr<Range>>(webRange))
  52         m_private.reset(new SurroundingText(*range, maxLength));
  53 }
  54
  55 WebString WebSurroundingText::textContent() const
  56 {
  57     return m_private->content();
  58 }
  59
  60 size_t WebSurroundingText::hitOffsetInTextContent() const
  61 {
  62     ASSERT(m_private->startOffsetInContent() == m_private->endOffsetInContent());
  63     return m_private->startOffsetInContent();
  64 }
  65
  66 size_t WebSurroundingText::startOffsetInTextContent() const
  67 {
  68     return m_private->startOffsetInContent();
  69 }
  70
  71 size_t WebSurroundingText::endOffsetInTextContent() const
  72 {
  73     return m_private->endOffsetInContent();
  74 }
  75
  76 WebRange WebSurroundingText::rangeFromContentOffsets(size_t startOffsetInContent, size_t endOffsetInContent)
  77 {
  78     return m_private->rangeFromContentOffsets(startOffsetInContent, endOffsetInContent);
  79 }
  80
  81 bool WebSurroundingText::isNull() const
  82 {
  83     return !m_private.get();
  84 }
  85
  86 void WebSurroundingText::reset()
  87 {
  88     m_private.reset(0);
  89 }
  90
  91 } // namespace blink