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Side by Side Diff: sky/engine/bindings-dart/core/dart/DartCustomElementWrapper.cpp

Issue 918273002: Remove bindings-dart (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 10 months ago
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1 /*
2 * Copyright (C) 2012 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "config.h"
33 #include "bindings/core/dart/DartCustomElementWrapper.h"
34
35 #include "bindings/core/dart/DartCustomElementLifecycleCallbacks.h"
36 #include "bindings/core/dart/DartHTMLElement.h"
37 #include "bindings/core/dart/DartSVGElement.h"
38 #include "core/DartHTMLElementWrapperFactory.h"
39 #include "core/DartSVGElementWrapperFactory.h"
40 #include "core/dom/custom/CustomElement.h"
41 #include "core/html/HTMLElement.h"
42 #include "core/html/HTMLUnknownElement.h"
43 #include "core/svg/SVGElement.h"
44
45 namespace blink {
46
47 template<typename ElementType>
48 Dart_Handle createDartDirectWrapper(DartDOMData*, ElementType*);
49
50 template<>
51 Dart_Handle createDartDirectWrapper<HTMLElement>(DartDOMData* domData, HTMLEleme nt* element)
52 {
53 return DartDOMWrapper::createWrapper<DartHTMLElement>(domData, element);
54 }
55
56 template<>
57 Dart_Handle createDartDirectWrapper<SVGElement>(DartDOMData* domData, SVGElement * element)
58 {
59 return DartDOMWrapper::createWrapper<DartSVGElement>(domData, element);
60 }
61
62 template<typename ElementType>
63 Dart_Handle createDartFallbackWrapper(DartDOMData*, ElementType*);
64
65 template<>
66 Dart_Handle createDartFallbackWrapper<HTMLElement>(DartDOMData* domData, HTMLEle ment* element)
67 {
68 return createDartHTMLFallbackWrapper(domData, toHTMLUnknownElement(element)) ;
69 }
70
71 template<>
72 Dart_Handle createDartFallbackWrapper<SVGElement>(DartDOMData* domData, SVGEleme nt* element)
73 {
74 return createDartSVGFallbackWrapper(domData, element);
75 }
76
77 template<typename ElementType>
78 Dart_Handle createUpgradeCandidateWrapper(ElementType* element, Dart_Handle (*cr eateSpecificWrapper)(DartDOMData*, ElementType* element))
79 {
80 DartDOMData* domData = DartDOMData::current();
81 if (CustomElement::isValidName(element->localName()))
82 return createDartDirectWrapper(domData, element);
83 if (createSpecificWrapper)
84 return createSpecificWrapper(domData, element);
85 return createDartFallbackWrapper(domData, element);
86 }
87
88 template<typename ElementType>
89 Dart_Handle DartCustomElementWrapper<ElementType>::wrap(PassRefPtr<ElementType> element, Dart_Handle (*createSpecificWrapper)(DartDOMData* domData, ElementType* ))
90 {
91 if (!element->isUpgradedCustomElement())
92 return createUpgradeCandidateWrapper(element.get(), createSpecificWrappe r);
93
94 return upgradeDartWrapper(element.get(), createSpecificWrapper);
95 }
96
97 template<>
98 Dart_Handle DartCustomElementWrapper<HTMLElement>::swapElementWrapper(DartDOMDat a* domData, HTMLElement* element, Dart_Handle wrapperType, intptr_t nativeClassI d)
99 {
100 Dart_WeakPersistentHandle oldInstance = DartDOMWrapper::lookupWrapper<DartHT MLElement>(
101 domData, reinterpret_cast<HTMLElement*>(element));
102 Dart_Handle oldWrapper = 0;
103 if (oldInstance) {
104 oldWrapper = Dart_HandleFromWeakPersistent(oldInstance);
105 DartDOMWrapper::disassociateWrapper<DartHTMLElement>(
106 domData,
107 reinterpret_cast<HTMLElement*>(element),
108 oldWrapper);
109 }
110
111 Dart_Handle newWrapper = Dart_Allocate(wrapperType);
112 ASSERT(!Dart_IsError(newWrapper));
113 DartDOMWrapper::writeNativePointer(newWrapper, element, nativeClassId);
114
115 Dart_Handle result = Dart_InvokeConstructor(newWrapper, Dart_NewStringFromCS tring("created"), 0, 0);
116
117 if (Dart_IsError(result)) {
118 DartUtilities::reportProblem(domData->scriptExecutionContext(), result);
119
120 // Fall back to the old wrapper if possible.
121 if (oldWrapper) {
122 DartDOMWrapper::associateWrapper<DartHTMLElement>(domData, element, oldWrapper);
123 return oldWrapper;
124 }
125 return result;
126 }
127 return newWrapper;
128 }
129
130 template<>
131 Dart_Handle DartCustomElementWrapper<SVGElement>::swapElementWrapper(DartDOMData * domData, SVGElement* element, Dart_Handle wrapperType, intptr_t nativeClassId)
132 {
133 // TODO: support SVG elements.
134 ASSERT(FALSE);
135 return Dart_Handle();
136 }
137
138 template<>
139 Dart_Handle DartCustomElementWrapper<HTMLElement>::upgradeDartWrapper(HTMLElemen t* element, Dart_Handle (*createSpecificWrapper)(DartDOMData*, HTMLElement*))
140 {
141 DartDOMData* domData = DartDOMData::current();
142 DartCustomElementBinding* binding = domData->customElementBinding(element->c ustomElementDefinition());
143 if (!binding)
144 return createUpgradeCandidateWrapper(element, createSpecificWrapper);
145
146 Dart_PersistentHandle customType = binding->customType();
147 ASSERT(!Dart_IsError(customType));
148
149 Dart_Handle newWrapper = swapElementWrapper(domData, element, customType, bi nding->nativeClassId());
150 if (Dart_IsError(newWrapper)) {
151 // When the upgrade fails the failed wrapper may have been associated,
152 // so we need to create a new one and re-associate it.
153 Dart_Handle fallbackWrapper = createUpgradeCandidateWrapper(element, cre ateSpecificWrapper);
154 if (Dart_IsError(fallbackWrapper)) {
155 // FIXME: We can reach here on a stack overflow. We should cascade t he exception from here, but that will
156 // require additional plumbing. We already reported the problem in s wapElementWrapper so just return null
157 // here.
158 return Dart_Null();
159 }
160
161 DartDOMWrapper::associateWrapper<DartHTMLElement>(domData, element, fall backWrapper);
162 DartDOMWrapper::writeNativePointer(fallbackWrapper, element, binding->na tiveClassId());
163 return fallbackWrapper;
164 }
165 return newWrapper;
166 }
167
168 template<>
169 Dart_Handle DartCustomElementWrapper<HTMLElement>::changeElementWrapper(Dart_Han dle element, Dart_Handle wrapperType)
170 {
171 DartDOMData* domData = DartDOMData::current();
172
173 intptr_t nativeClassId = reinterpret_cast<intptr_t>(DartDOMWrapper::readNati vePointer(element, DartDOMWrapper::NativeTypeIndex));
174 Dart_Handle exception = 0;
175 HTMLElement* nativeElement = DartDOMWrapper::unwrapDartWrapper<DartHTMLEleme nt>(domData, element, exception);
176 if (exception) {
177 return exception;
178 }
179 return swapElementWrapper(domData, nativeElement, wrapperType, nativeClassId );
180 }
181
182 template<>
183 Dart_Handle DartCustomElementWrapper<SVGElement>::changeElementWrapper(Dart_Hand le element, Dart_Handle wrapperType)
184 {
185 // TODO: support SVG elements.
186 ASSERT(FALSE);
187 return Dart_Handle();
188 }
189
190 template<>
191 Dart_Handle DartCustomElementWrapper<SVGElement>::upgradeDartWrapper(SVGElement* element, Dart_Handle (*createSpecificWrapper)(DartDOMData*, SVGElement*))
192 {
193 // TODO: support SVG elements.
194 ASSERT(FALSE);
195 return Dart_Handle();
196 }
197
198 template<>
199 void DartCustomElementWrapper<HTMLElement>::initializeCustomElement(Dart_Handle wrapper, Dart_Handle& exception)
200 {
201 DartDOMData* domData = DartDOMData::current();
202 HTMLElement* element = DartDOMWrapper::unwrapDartWrapper<DartHTMLElement>(do mData, wrapper, exception);
203 if (exception) {
204 return;
205 }
206 if (!element) {
207 exception = Dart_NewStringFromCString("created called outside of custom element creation.");
208 return;
209 }
210
211 DartDOMWrapper::associateWrapper<DartHTMLElement>(domData, element, wrapper) ;
212 }
213
214 template<>
215 void DartCustomElementWrapper<SVGElement>::initializeCustomElement(Dart_Handle w rapper, Dart_Handle& exception)
216 {
217 // TODO: support SVG elements.
218 ASSERT(FALSE);
219 }
220
221 template
222 class DartCustomElementWrapper<HTMLElement>;
223
224 template
225 class DartCustomElementWrapper<SVGElement>;
226
227 } // namespace blink
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