1/*
2 * Copyright (C) 2013, 2014 Apple Inc. All rights reserved.
3 * Copyright (C) 2014 Igalia S.L.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "Editor.h"
29
30#include "Blob.h"
31#include "CachedImage.h"
32#include "DOMURL.h"
33#include "DocumentFragment.h"
34#include "Frame.h"
35#include "HTMLEmbedElement.h"
36#include "HTMLImageElement.h"
37#include "HTMLInputElement.h"
38#include "HTMLNames.h"
39#include "HTMLObjectElement.h"
40#include "HTMLParserIdioms.h"
41#include "Pasteboard.h"
42#include "RenderImage.h"
43#include "SVGElement.h"
44#include "SVGImageElement.h"
45#include "SelectionData.h"
46#include "Settings.h"
47#include "XLinkNames.h"
48#include "markup.h"
49#include <cairo.h>
50
51namespace WebCore {
52
53static RefPtr<DocumentFragment> createFragmentFromPasteboardData(Pasteboard& pasteboard, Frame& frame, Range& range, bool allowPlainText, bool& chosePlainText)
54{
55 chosePlainText = false;
56
57 if (!pasteboard.hasData())
58 return nullptr;
59
60 const auto& selection = pasteboard.selectionData();
61 if (selection.hasImage()) {
62 Vector<uint8_t> buffer;
63 auto status = cairo_surface_write_to_png_stream(selection.image()->nativeImage().get(), [](void* output, const unsigned char* data, unsigned size) {
64 if (!reinterpret_cast<Vector<uint8_t>*>(output)->tryAppend(data, size))
65 return CAIRO_STATUS_WRITE_ERROR;
66 return CAIRO_STATUS_SUCCESS;
67 }, &buffer);
68 if (status == CAIRO_STATUS_SUCCESS) {
69 auto blob = Blob::create(WTFMove(buffer), "image/png");
70 if (!frame.document())
71 return nullptr;
72 return createFragmentForImageAndURL(*frame.document(), DOMURL::createObjectURL(*frame.document(), blob));
73 }
74 }
75
76 if (selection.hasMarkup() && frame.document())
77 return createFragmentFromMarkup(*frame.document(), selection.markup(), emptyString(), DisallowScriptingAndPluginContent);
78
79 if (!allowPlainText)
80 return nullptr;
81
82 if (selection.hasText()) {
83 chosePlainText = true;
84 return createFragmentFromText(range, selection.text());
85 }
86
87 return nullptr;
88}
89
90void Editor::pasteWithPasteboard(Pasteboard* pasteboard, OptionSet<PasteOption> options)
91{
92 RefPtr<Range> range = selectedRange();
93 if (!range)
94 return;
95
96 bool chosePlainText;
97 RefPtr<DocumentFragment> fragment = createFragmentFromPasteboardData(*pasteboard, m_frame, *range, options.contains(PasteOption::AllowPlainText), chosePlainText);
98
99 if (fragment && options.contains(PasteOption::AsQuotation))
100 quoteFragmentForPasting(*fragment);
101
102 if (fragment && shouldInsertFragment(*fragment, range.get(), EditorInsertAction::Pasted))
103 pasteAsFragment(fragment.releaseNonNull(), canSmartReplaceWithPasteboard(*pasteboard), chosePlainText, options.contains(PasteOption::IgnoreMailBlockquote) ? MailBlockquoteHandling::IgnoreBlockquote : MailBlockquoteHandling::RespectBlockquote);
104}
105
106static const AtomicString& elementURL(Element& element)
107{
108 if (is<HTMLImageElement>(element) || is<HTMLInputElement>(element))
109 return element.attributeWithoutSynchronization(HTMLNames::srcAttr);
110 if (is<SVGImageElement>(element))
111 return element.attributeWithoutSynchronization(XLinkNames::hrefAttr);
112 if (is<HTMLEmbedElement>(element) || is<HTMLObjectElement>(element))
113 return element.imageSourceURL();
114 return nullAtom();
115}
116
117static bool getImageForElement(Element& element, RefPtr<Image>& image)
118{
119 auto* renderer = element.renderer();
120 if (!is<RenderImage>(renderer))
121 return false;
122
123 CachedImage* cachedImage = downcast<RenderImage>(*renderer).cachedImage();
124 if (!cachedImage || cachedImage->errorOccurred())
125 return false;
126
127 image = cachedImage->imageForRenderer(renderer);
128 return image;
129}
130
131void Editor::writeImageToPasteboard(Pasteboard& pasteboard, Element& imageElement, const URL&, const String& title)
132{
133 PasteboardImage pasteboardImage;
134
135 if (!getImageForElement(imageElement, pasteboardImage.image))
136 return;
137 ASSERT(pasteboardImage.image);
138
139 pasteboardImage.url.url = imageElement.document().completeURL(stripLeadingAndTrailingHTMLSpaces(elementURL(imageElement)));
140 pasteboardImage.url.title = title;
141 pasteboardImage.url.markup = serializeFragment(imageElement, SerializedNodes::SubtreeIncludingNode, nullptr, ResolveURLs::Yes);
142 pasteboard.write(pasteboardImage);
143}
144
145void Editor::writeSelectionToPasteboard(Pasteboard& pasteboard)
146{
147 PasteboardWebContent pasteboardContent;
148 pasteboardContent.canSmartCopyOrDelete = canSmartCopyOrDelete();
149 pasteboardContent.text = selectedTextForDataTransfer();
150 pasteboardContent.markup = serializePreservingVisualAppearance(m_frame.selection().selection(), ResolveURLs::YesExcludingLocalFileURLsForPrivacy,
151 m_frame.settings().selectionAcrossShadowBoundariesEnabled() ? SerializeComposedTree::Yes : SerializeComposedTree::No);
152 pasteboard.write(pasteboardContent);
153}
154
155RefPtr<DocumentFragment> Editor::webContentFromPasteboard(Pasteboard& pasteboard, Range& context, bool allowPlainText, bool& chosePlainText)
156{
157 return createFragmentFromPasteboardData(pasteboard, m_frame, context, allowPlainText, chosePlainText);
158}
159
160} // namespace WebCore
161