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      1 /*
      2  * Copyright (c) 2008, 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 "Pasteboard.h"
     33 
     34 #include "ChromiumBridge.h"
     35 #include "ClipboardUtilitiesChromium.h"
     36 #include "DocumentFragment.h"
     37 #include "Document.h"
     38 #include "Element.h"
     39 #include "Frame.h"
     40 #include "HTMLNames.h"
     41 #include "Image.h"
     42 #include "KURL.h"
     43 #include "markup.h"
     44 #include "NativeImageSkia.h"
     45 #include "Range.h"
     46 #include "RenderImage.h"
     47 
     48 #if ENABLE(SVG)
     49 #include "SVGNames.h"
     50 #include "XLinkNames.h"
     51 #endif
     52 
     53 namespace WebCore {
     54 
     55 Pasteboard* Pasteboard::generalPasteboard()
     56 {
     57     static Pasteboard* pasteboard = new Pasteboard;
     58     return pasteboard;
     59 }
     60 
     61 Pasteboard::Pasteboard()
     62     : m_selectionMode(false)
     63 {
     64 }
     65 
     66 void Pasteboard::clear()
     67 {
     68     // The ScopedClipboardWriter class takes care of clearing the clipboard's
     69     // previous contents.
     70 }
     71 
     72 bool Pasteboard::isSelectionMode() const
     73 {
     74     return m_selectionMode;
     75 }
     76 
     77 void Pasteboard::setSelectionMode(bool selectionMode)
     78 {
     79     m_selectionMode = selectionMode;
     80 }
     81 
     82 void Pasteboard::writeSelection(Range* selectedRange, bool canSmartCopyOrDelete, Frame* frame)
     83 {
     84     String html = createMarkup(selectedRange, 0, AnnotateForInterchange);
     85     ExceptionCode ec = 0;
     86     KURL url = selectedRange->startContainer(ec)->document()->url();
     87     String plainText = frame->selectedText();
     88 #if OS(WINDOWS)
     89     replaceNewlinesWithWindowsStyleNewlines(plainText);
     90 #endif
     91     replaceNBSPWithSpace(plainText);
     92 
     93     ChromiumBridge::clipboardWriteSelection(html, url, plainText, canSmartCopyOrDelete);
     94 }
     95 
     96 void Pasteboard::writePlainText(const String& text)
     97 {
     98 #if OS(WINDOWS)
     99     String plainText(text);
    100     replaceNewlinesWithWindowsStyleNewlines(plainText);
    101     ChromiumBridge::clipboardWritePlainText(plainText);
    102 #else
    103     ChromiumBridge::clipboardWritePlainText(text);
    104 #endif
    105 }
    106 
    107 void Pasteboard::writeURL(const KURL& url, const String& titleStr, Frame* frame)
    108 {
    109     ASSERT(!url.isEmpty());
    110 
    111     String title(titleStr);
    112     if (title.isEmpty()) {
    113         title = url.lastPathComponent();
    114         if (title.isEmpty())
    115             title = url.host();
    116     }
    117 
    118     ChromiumBridge::clipboardWriteURL(url, title);
    119 }
    120 
    121 void Pasteboard::writeImage(Node* node, const KURL&, const String& title)
    122 {
    123     ASSERT(node);
    124     ASSERT(node->renderer());
    125     ASSERT(node->renderer()->isImage());
    126     RenderImage* renderer = toRenderImage(node->renderer());
    127     CachedImage* cachedImage = renderer->cachedImage();
    128     ASSERT(cachedImage);
    129     Image* image = cachedImage->image();
    130     ASSERT(image);
    131 
    132     // If the image is wrapped in a link, |url| points to the target of the
    133     // link.  This isn't useful to us, so get the actual image URL.
    134     AtomicString urlString;
    135     if (node->hasTagName(HTMLNames::imgTag) || node->hasTagName(HTMLNames::inputTag))
    136         urlString = static_cast<Element*>(node)->getAttribute(HTMLNames::srcAttr);
    137 #if ENABLE(SVG)
    138     else if (node->hasTagName(SVGNames::imageTag))
    139         urlString = static_cast<Element*>(node)->getAttribute(XLinkNames::hrefAttr);
    140 #endif
    141     else if (node->hasTagName(HTMLNames::embedTag) || node->hasTagName(HTMLNames::objectTag)) {
    142         Element* element = static_cast<Element*>(node);
    143         urlString = element->getAttribute(element->imageSourceAttributeName());
    144     }
    145     KURL url = urlString.isEmpty() ? KURL() : node->document()->completeURL(deprecatedParseURL(urlString));
    146 
    147     NativeImagePtr bitmap = image->nativeImageForCurrentFrame();
    148     ChromiumBridge::clipboardWriteImage(bitmap, url, title);
    149 }
    150 
    151 bool Pasteboard::canSmartReplace()
    152 {
    153     return ChromiumBridge::clipboardIsFormatAvailable(PasteboardPrivate::WebSmartPasteFormat, m_selectionMode ? PasteboardPrivate::SelectionBuffer : PasteboardPrivate::StandardBuffer);
    154 }
    155 
    156 String Pasteboard::plainText(Frame* frame)
    157 {
    158     return ChromiumBridge::clipboardReadPlainText(m_selectionMode ? PasteboardPrivate::SelectionBuffer : PasteboardPrivate::StandardBuffer);
    159 }
    160 
    161 PassRefPtr<DocumentFragment> Pasteboard::documentFragment(Frame* frame, PassRefPtr<Range> context, bool allowPlainText, bool& chosePlainText)
    162 {
    163     chosePlainText = false;
    164     PasteboardPrivate::ClipboardBuffer buffer = m_selectionMode ? PasteboardPrivate::SelectionBuffer : PasteboardPrivate::StandardBuffer;
    165 
    166     if (ChromiumBridge::clipboardIsFormatAvailable(PasteboardPrivate::HTMLFormat, buffer)) {
    167         String markup;
    168         KURL srcURL;
    169         ChromiumBridge::clipboardReadHTML(buffer, &markup, &srcURL);
    170 
    171         RefPtr<DocumentFragment> fragment =
    172             createFragmentFromMarkup(frame->document(), markup, srcURL, FragmentScriptingNotAllowed);
    173         if (fragment)
    174             return fragment.release();
    175     }
    176 
    177     if (allowPlainText) {
    178         String markup = ChromiumBridge::clipboardReadPlainText(buffer);
    179         if (!markup.isEmpty()) {
    180             chosePlainText = true;
    181 
    182             RefPtr<DocumentFragment> fragment =
    183                 createFragmentFromText(context.get(), markup);
    184             if (fragment)
    185                 return fragment.release();
    186         }
    187     }
    188 
    189     return 0;
    190 }
    191 
    192 } // namespace WebCore
    193