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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 "ClipboardUtilitiesChromium.h"
     35 #include "Document.h"
     36 #include "DocumentFragment.h"
     37 #include "Element.h"
     38 #include "Frame.h"
     39 #include "HTMLNames.h"
     40 #include "HTMLParserIdioms.h"
     41 #include "Image.h"
     42 #include "KURL.h"
     43 #include "NativeImageSkia.h"
     44 #include "PlatformBridge.h"
     45 #include "Range.h"
     46 #include "RenderImage.h"
     47 #include "markup.h"
     48 
     49 #if ENABLE(SVG)
     50 #include "SVGNames.h"
     51 #include "XLinkNames.h"
     52 #endif
     53 
     54 namespace WebCore {
     55 
     56 Pasteboard* Pasteboard::generalPasteboard()
     57 {
     58     static Pasteboard* pasteboard = new Pasteboard;
     59     return pasteboard;
     60 }
     61 
     62 Pasteboard::Pasteboard()
     63     : m_selectionMode(false)
     64 {
     65 }
     66 
     67 void Pasteboard::clear()
     68 {
     69     // The ScopedClipboardWriter class takes care of clearing the clipboard's
     70     // previous contents.
     71 }
     72 
     73 bool Pasteboard::isSelectionMode() const
     74 {
     75     return m_selectionMode;
     76 }
     77 
     78 void Pasteboard::setSelectionMode(bool selectionMode)
     79 {
     80     m_selectionMode = selectionMode;
     81 }
     82 
     83 void Pasteboard::writeSelection(Range* selectedRange, bool canSmartCopyOrDelete, Frame* frame)
     84 {
     85     String html = createMarkup(selectedRange, 0, AnnotateForInterchange, false, AbsoluteURLs);
     86     ExceptionCode ec = 0;
     87     KURL url = selectedRange->startContainer(ec)->document()->url();
     88     String plainText = frame->editor()->selectedText();
     89 #if OS(WINDOWS)
     90     replaceNewlinesWithWindowsStyleNewlines(plainText);
     91 #endif
     92     replaceNBSPWithSpace(plainText);
     93 
     94     PlatformBridge::clipboardWriteSelection(html, url, plainText, canSmartCopyOrDelete);
     95 }
     96 
     97 void Pasteboard::writePlainText(const String& text)
     98 {
     99 #if OS(WINDOWS)
    100     String plainText(text);
    101     replaceNewlinesWithWindowsStyleNewlines(plainText);
    102     PlatformBridge::clipboardWritePlainText(plainText);
    103 #else
    104     PlatformBridge::clipboardWritePlainText(text);
    105 #endif
    106 }
    107 
    108 void Pasteboard::writeURL(const KURL& url, const String& titleStr, Frame* frame)
    109 {
    110     ASSERT(!url.isEmpty());
    111 
    112     String title(titleStr);
    113     if (title.isEmpty()) {
    114         title = url.lastPathComponent();
    115         if (title.isEmpty())
    116             title = url.host();
    117     }
    118 
    119     PlatformBridge::clipboardWriteURL(url, title);
    120 }
    121 
    122 void Pasteboard::writeImage(Node* node, const KURL&, const String& title)
    123 {
    124     ASSERT(node);
    125     ASSERT(node->renderer());
    126     ASSERT(node->renderer()->isImage());
    127     RenderImage* renderer = toRenderImage(node->renderer());
    128     CachedImage* cachedImage = renderer->cachedImage();
    129     if (!cachedImage || cachedImage->errorOccurred())
    130         return;
    131     Image* image = cachedImage->image();
    132     ASSERT(image);
    133 
    134     NativeImagePtr bitmap = image->nativeImageForCurrentFrame();
    135     if (!bitmap)
    136         return;
    137 
    138     // If the image is wrapped in a link, |url| points to the target of the
    139     // link.  This isn't useful to us, so get the actual image URL.
    140     AtomicString urlString;
    141     if (node->hasTagName(HTMLNames::imgTag) || node->hasTagName(HTMLNames::inputTag))
    142         urlString = static_cast<Element*>(node)->getAttribute(HTMLNames::srcAttr);
    143 #if ENABLE(SVG)
    144     else if (node->hasTagName(SVGNames::imageTag))
    145         urlString = static_cast<Element*>(node)->getAttribute(XLinkNames::hrefAttr);
    146 #endif
    147     else if (node->hasTagName(HTMLNames::embedTag) || node->hasTagName(HTMLNames::objectTag)) {
    148         Element* element = static_cast<Element*>(node);
    149         urlString = element->getAttribute(element->imageSourceAttributeName());
    150     }
    151     KURL url = urlString.isEmpty() ? KURL() : node->document()->completeURL(stripLeadingAndTrailingHTMLSpaces(urlString));
    152 
    153     PlatformBridge::clipboardWriteImage(bitmap, url, title);
    154 }
    155 
    156 bool Pasteboard::canSmartReplace()
    157 {
    158     return PlatformBridge::clipboardIsFormatAvailable(PasteboardPrivate::WebSmartPasteFormat, m_selectionMode ? PasteboardPrivate::SelectionBuffer : PasteboardPrivate::StandardBuffer);
    159 }
    160 
    161 String Pasteboard::plainText(Frame* frame)
    162 {
    163     return PlatformBridge::clipboardReadPlainText(m_selectionMode ? PasteboardPrivate::SelectionBuffer : PasteboardPrivate::StandardBuffer);
    164 }
    165 
    166 PassRefPtr<DocumentFragment> Pasteboard::documentFragment(Frame* frame, PassRefPtr<Range> context, bool allowPlainText, bool& chosePlainText)
    167 {
    168     chosePlainText = false;
    169     PasteboardPrivate::ClipboardBuffer buffer = m_selectionMode ? PasteboardPrivate::SelectionBuffer : PasteboardPrivate::StandardBuffer;
    170 
    171     if (PlatformBridge::clipboardIsFormatAvailable(PasteboardPrivate::HTMLFormat, buffer)) {
    172         String markup;
    173         KURL srcURL;
    174         PlatformBridge::clipboardReadHTML(buffer, &markup, &srcURL);
    175 
    176         RefPtr<DocumentFragment> fragment =
    177             createFragmentFromMarkup(frame->document(), markup, srcURL, FragmentScriptingNotAllowed);
    178         if (fragment)
    179             return fragment.release();
    180     }
    181 
    182     if (allowPlainText) {
    183         String markup = PlatformBridge::clipboardReadPlainText(buffer);
    184         if (!markup.isEmpty()) {
    185             chosePlainText = true;
    186 
    187             RefPtr<DocumentFragment> fragment =
    188                 createFragmentFromText(context.get(), markup);
    189             if (fragment)
    190                 return fragment.release();
    191         }
    192     }
    193 
    194     return 0;
    195 }
    196 
    197 } // namespace WebCore
    198