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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 #include "config.h"
     32 #include "public/web/WebRange.h"
     33 
     34 #include "bindings/v8/ExceptionState.h"
     35 #include "bindings/v8/ExceptionStatePlaceholder.h"
     36 #include "core/dom/Document.h"
     37 #include "core/dom/Element.h"
     38 #include "core/dom/Range.h"
     39 #include "core/dom/shadow/ShadowRoot.h"
     40 #include "core/editing/FrameSelection.h"
     41 #include "core/editing/PlainTextRange.h"
     42 #include "core/frame/FrameView.h"
     43 #include "core/frame/LocalFrame.h"
     44 #include "public/platform/WebFloatQuad.h"
     45 #include "public/platform/WebString.h"
     46 #include "public/web/WebExceptionCode.h"
     47 #include "public/web/WebNode.h"
     48 #include "web/WebLocalFrameImpl.h"
     49 #include "wtf/PassRefPtr.h"
     50 
     51 using namespace WebCore;
     52 
     53 namespace blink {
     54 
     55 void WebRange::reset()
     56 {
     57     m_private.reset();
     58 }
     59 
     60 void WebRange::assign(const WebRange& other)
     61 {
     62     m_private = other.m_private;
     63 }
     64 
     65 int WebRange::startOffset() const
     66 {
     67     return m_private->startOffset();
     68 }
     69 
     70 int WebRange::endOffset() const
     71 {
     72     return m_private->endOffset();
     73 }
     74 
     75 WebNode WebRange::startContainer(WebExceptionCode& exceptionCode) const
     76 {
     77     // FIXME: Create a wrapper class that just sets the internal int.
     78     RefPtrWillBeRawPtr<Node> node(m_private->startContainer());
     79     exceptionCode = 0;
     80     return node.release();
     81 }
     82 
     83 WebNode WebRange::endContainer(WebExceptionCode& exceptionCode) const
     84 {
     85     // FIXME: Create a wrapper class that just sets the internal int.
     86     RefPtrWillBeRawPtr<Node> node(m_private->endContainer());
     87     exceptionCode = 0;
     88     return node.release();
     89 }
     90 
     91 WebString WebRange::toHTMLText() const
     92 {
     93     return m_private->toHTML();
     94 }
     95 
     96 WebString WebRange::toPlainText() const
     97 {
     98     return m_private->text();
     99 }
    100 
    101 WebRange WebRange::expandedToParagraph() const
    102 {
    103     WebRange copy(*this);
    104     copy.m_private->expand("block", IGNORE_EXCEPTION);
    105     return copy;
    106 }
    107 
    108 // static
    109 WebRange WebRange::fromDocumentRange(WebLocalFrame* frame, int start, int length)
    110 {
    111     WebCore::LocalFrame* webFrame = toWebLocalFrameImpl(frame)->frame();
    112     Element* selectionRoot = webFrame->selection().rootEditableElement();
    113     ContainerNode* scope = selectionRoot ? selectionRoot : webFrame->document()->documentElement();
    114     return PlainTextRange(start, start + length).createRange(*scope);
    115 }
    116 
    117 WebVector<WebFloatQuad> WebRange::textQuads() const
    118 {
    119     if (isNull())
    120         return WebVector<WebFloatQuad>();
    121 
    122     LocalFrame* frame = m_private->ownerDocument().frame();
    123     if (!frame)
    124         return WebVector<WebFloatQuad>();
    125 
    126     Vector<FloatQuad> quads;
    127     m_private->textQuads(quads);
    128     for (unsigned i = 0; i < quads.size(); ++i) {
    129         quads[i].setP1(frame->view()->contentsToWindow(roundedIntPoint(quads[i].p1())));
    130         quads[i].setP2(frame->view()->contentsToWindow(roundedIntPoint(quads[i].p2())));
    131         quads[i].setP3(frame->view()->contentsToWindow(roundedIntPoint(quads[i].p3())));
    132         quads[i].setP4(frame->view()->contentsToWindow(roundedIntPoint(quads[i].p4())));
    133     }
    134 
    135     return quads;
    136 }
    137 
    138 WebRange::WebRange(const PassRefPtrWillBeRawPtr<WebCore::Range>& range)
    139     : m_private(range)
    140 {
    141 }
    142 
    143 WebRange::operator PassRefPtrWillBeRawPtr<WebCore::Range>() const
    144 {
    145     return m_private.get();
    146 }
    147 
    148 } // namespace blink
    149