1 | /* |
2 | * Copyright (C) 2004-2018 Apple Inc. All rights reserved. |
3 | * Copyright (C) 2010 Google Inc. All rights reserved. |
4 | * Copyright (C) 2012 Samsung Electronics. All rights reserved. |
5 | * |
6 | * This library is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Library General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2 of the License, or (at your option) any later version. |
10 | * |
11 | * This library is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Library General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Library General Public License |
17 | * along with this library; see the file COPYING.LIB. If not, write to |
18 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
19 | * Boston, MA 02110-1301, USA. |
20 | * |
21 | */ |
22 | |
23 | #include "config.h" |
24 | #include "ImageInputType.h" |
25 | |
26 | #include "CachedImage.h" |
27 | #include "DOMFormData.h" |
28 | #include "HTMLFormElement.h" |
29 | #include "HTMLImageLoader.h" |
30 | #include "HTMLInputElement.h" |
31 | #include "HTMLNames.h" |
32 | #include "HTMLParserIdioms.h" |
33 | #include "InputTypeNames.h" |
34 | #include "MouseEvent.h" |
35 | #include "RenderImage.h" |
36 | #include <wtf/NeverDestroyed.h> |
37 | |
38 | namespace WebCore { |
39 | |
40 | using namespace HTMLNames; |
41 | |
42 | ImageInputType::ImageInputType(HTMLInputElement& element) |
43 | : BaseButtonInputType(element) |
44 | { |
45 | } |
46 | |
47 | const AtomicString& ImageInputType::formControlType() const |
48 | { |
49 | return InputTypeNames::image(); |
50 | } |
51 | |
52 | bool ImageInputType::isFormDataAppendable() const |
53 | { |
54 | return true; |
55 | } |
56 | |
57 | bool ImageInputType::appendFormData(DOMFormData& formData, bool) const |
58 | { |
59 | ASSERT(element()); |
60 | if (!element()->isActivatedSubmit()) |
61 | return false; |
62 | |
63 | auto& name = element()->name(); |
64 | if (name.isEmpty()) { |
65 | formData.append("x"_s , String::number(m_clickLocation.x())); |
66 | formData.append("y"_s , String::number(m_clickLocation.y())); |
67 | return true; |
68 | } |
69 | |
70 | formData.append(makeString(name, ".x" ), String::number(m_clickLocation.x())); |
71 | formData.append(makeString(name, ".y" ), String::number(m_clickLocation.y())); |
72 | |
73 | auto value = element()->value(); |
74 | if (!value.isEmpty()) |
75 | formData.append(name, value); |
76 | |
77 | return true; |
78 | } |
79 | |
80 | bool ImageInputType::supportsValidation() const |
81 | { |
82 | return false; |
83 | } |
84 | |
85 | void ImageInputType::handleDOMActivateEvent(Event& event) |
86 | { |
87 | ASSERT(element()); |
88 | Ref<HTMLInputElement> protectedElement(*element()); |
89 | if (protectedElement->isDisabledFormControl() || !protectedElement->form()) |
90 | return; |
91 | |
92 | Ref<HTMLFormElement> protectedForm(*protectedElement->form()); |
93 | |
94 | protectedElement->setActivatedSubmit(true); |
95 | |
96 | m_clickLocation = IntPoint(); |
97 | if (event.underlyingEvent()) { |
98 | Event& underlyingEvent = *event.underlyingEvent(); |
99 | if (is<MouseEvent>(underlyingEvent)) { |
100 | MouseEvent& mouseEvent = downcast<MouseEvent>(underlyingEvent); |
101 | if (!mouseEvent.isSimulated()) |
102 | m_clickLocation = IntPoint(mouseEvent.offsetX(), mouseEvent.offsetY()); |
103 | } |
104 | } |
105 | |
106 | // Update layout before processing form actions in case the style changes |
107 | // the Form or button relationships. |
108 | protectedElement->document().updateLayoutIgnorePendingStylesheets(); |
109 | |
110 | if (auto currentForm = protectedElement->form()) |
111 | currentForm->prepareForSubmission(event); // Event handlers can run. |
112 | |
113 | protectedElement->setActivatedSubmit(false); |
114 | event.setDefaultHandled(); |
115 | } |
116 | |
117 | RenderPtr<RenderElement> ImageInputType::createInputRenderer(RenderStyle&& style) |
118 | { |
119 | ASSERT(element()); |
120 | return createRenderer<RenderImage>(*element(), WTFMove(style)); |
121 | } |
122 | |
123 | void ImageInputType::attributeChanged(const QualifiedName& name) |
124 | { |
125 | if (name == altAttr) { |
126 | if (auto* element = this->element()) { |
127 | auto* renderer = element->renderer(); |
128 | if (is<RenderImage>(renderer)) |
129 | downcast<RenderImage>(*renderer).updateAltText(); |
130 | } |
131 | } else if (name == srcAttr) { |
132 | if (auto* element = this->element()) { |
133 | if (element->renderer()) |
134 | element->ensureImageLoader().updateFromElementIgnoringPreviousError(); |
135 | } |
136 | } |
137 | BaseButtonInputType::attributeChanged(name); |
138 | } |
139 | |
140 | void ImageInputType::attach() |
141 | { |
142 | BaseButtonInputType::attach(); |
143 | |
144 | ASSERT(element()); |
145 | HTMLImageLoader& imageLoader = element()->ensureImageLoader(); |
146 | imageLoader.updateFromElement(); |
147 | |
148 | auto* renderer = downcast<RenderImage>(element()->renderer()); |
149 | if (!renderer) |
150 | return; |
151 | |
152 | if (imageLoader.hasPendingBeforeLoadEvent()) |
153 | return; |
154 | |
155 | auto& imageResource = renderer->imageResource(); |
156 | imageResource.setCachedImage(imageLoader.image()); |
157 | |
158 | // If we have no image at all because we have no src attribute, set |
159 | // image height and width for the alt text instead. |
160 | if (!imageLoader.image() && !imageResource.cachedImage()) |
161 | renderer->setImageSizeForAltText(); |
162 | } |
163 | |
164 | bool ImageInputType::shouldRespectAlignAttribute() |
165 | { |
166 | return true; |
167 | } |
168 | |
169 | bool ImageInputType::canBeSuccessfulSubmitButton() |
170 | { |
171 | return true; |
172 | } |
173 | |
174 | bool ImageInputType::isImageButton() const |
175 | { |
176 | return true; |
177 | } |
178 | |
179 | bool ImageInputType::isEnumeratable() |
180 | { |
181 | return false; |
182 | } |
183 | |
184 | bool ImageInputType::shouldRespectHeightAndWidthAttributes() |
185 | { |
186 | return true; |
187 | } |
188 | |
189 | unsigned ImageInputType::height() const |
190 | { |
191 | ASSERT(element()); |
192 | Ref<HTMLInputElement> element(*this->element()); |
193 | |
194 | element->document().updateLayout(); |
195 | |
196 | if (auto* renderer = element->renderer()) |
197 | return adjustForAbsoluteZoom(downcast<RenderBox>(*renderer).contentHeight(), *renderer); |
198 | |
199 | // Check the attribute first for an explicit pixel value. |
200 | if (auto optionalHeight = parseHTMLNonNegativeInteger(element->attributeWithoutSynchronization(heightAttr))) |
201 | return optionalHeight.value(); |
202 | |
203 | // If the image is available, use its height. |
204 | auto* imageLoader = element->imageLoader(); |
205 | if (imageLoader && imageLoader->image()) |
206 | return imageLoader->image()->imageSizeForRenderer(element->renderer(), 1).height().toUnsigned(); |
207 | |
208 | return 0; |
209 | } |
210 | |
211 | unsigned ImageInputType::width() const |
212 | { |
213 | ASSERT(element()); |
214 | Ref<HTMLInputElement> element(*this->element()); |
215 | |
216 | element->document().updateLayout(); |
217 | |
218 | if (auto* renderer = element->renderer()) |
219 | return adjustForAbsoluteZoom(downcast<RenderBox>(*renderer).contentWidth(), *renderer); |
220 | |
221 | // Check the attribute first for an explicit pixel value. |
222 | if (auto optionalWidth = parseHTMLNonNegativeInteger(element->attributeWithoutSynchronization(widthAttr))) |
223 | return optionalWidth.value(); |
224 | |
225 | // If the image is available, use its width. |
226 | auto* imageLoader = element->imageLoader(); |
227 | if (imageLoader && imageLoader->image()) |
228 | return imageLoader->image()->imageSizeForRenderer(element->renderer(), 1).width().toUnsigned(); |
229 | |
230 | return 0; |
231 | } |
232 | |
233 | } // namespace WebCore |
234 | |