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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) | 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) |
4 * (C) 2001 Dirk Mueller (mueller@kde.org) | 4 * (C) 2001 Dirk Mueller (mueller@kde.org) |
5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights | 5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights |
6 * reserved. | 6 * reserved. |
7 * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org> | 7 * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org> |
8 * | 8 * |
9 * This library is free software; you can redistribute it and/or | 9 * This library is free software; you can redistribute it and/or |
10 * modify it under the terms of the GNU Library General Public | 10 * modify it under the terms of the GNU Library General Public |
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150 | 150 |
151 void ScriptLoader::DispatchErrorEvent() { | 151 void ScriptLoader::DispatchErrorEvent() { |
152 element_->DispatchErrorEvent(); | 152 element_->DispatchErrorEvent(); |
153 } | 153 } |
154 | 154 |
155 void ScriptLoader::DispatchLoadEvent() { | 155 void ScriptLoader::DispatchLoadEvent() { |
156 element_->DispatchLoadEvent(); | 156 element_->DispatchLoadEvent(); |
157 SetHaveFiredLoadEvent(true); | 157 SetHaveFiredLoadEvent(true); |
158 } | 158 } |
159 | 159 |
160 bool ScriptLoader::IsValidScriptTypeAndLanguage( | 160 namespace { |
| 161 |
| 162 bool IsValidClassicScriptTypeAndLanguage( |
161 const String& type, | 163 const String& type, |
162 const String& language, | 164 const String& language, |
163 LegacyTypeSupport support_legacy_types) { | 165 ScriptLoader::LegacyTypeSupport support_legacy_types) { |
164 // FIXME: isLegacySupportedJavaScriptLanguage() is not valid HTML5. It is used | 166 // FIXME: isLegacySupportedJavaScriptLanguage() is not valid HTML5. It is used |
165 // here to maintain backwards compatibility with existing layout tests. The | 167 // here to maintain backwards compatibility with existing layout tests. The |
166 // specific violations are: | 168 // specific violations are: |
167 // - Allowing type=javascript. type= should only support MIME types, such as | 169 // - Allowing type=javascript. type= should only support MIME types, such as |
168 // text/javascript. | 170 // text/javascript. |
169 // - Allowing a different set of languages for language= and type=. language= | 171 // - Allowing a different set of languages for language= and type=. language= |
170 // supports Javascript 1.1 and 1.4-1.6, but type= does not. | 172 // supports Javascript 1.1 and 1.4-1.6, but type= does not. |
171 if (type.IsEmpty()) { | 173 if (type.IsEmpty()) { |
172 return language.IsEmpty() || // assume text/javascript. | 174 return language.IsEmpty() || // assume text/javascript. |
173 MIMETypeRegistry::IsSupportedJavaScriptMIMEType("text/" + | 175 MIMETypeRegistry::IsSupportedJavaScriptMIMEType("text/" + |
174 language) || | 176 language) || |
175 MIMETypeRegistry::IsLegacySupportedJavaScriptLanguage(language); | 177 MIMETypeRegistry::IsLegacySupportedJavaScriptLanguage(language); |
176 } else if (RuntimeEnabledFeatures::moduleScriptsEnabled() && | |
177 type == "module") { | |
178 return true; | |
179 } else if (MIMETypeRegistry::IsSupportedJavaScriptMIMEType( | 178 } else if (MIMETypeRegistry::IsSupportedJavaScriptMIMEType( |
180 type.StripWhiteSpace()) || | 179 type.StripWhiteSpace()) || |
181 (support_legacy_types == kAllowLegacyTypeInTypeAttribute && | 180 (support_legacy_types == |
| 181 ScriptLoader::kAllowLegacyTypeInTypeAttribute && |
182 MIMETypeRegistry::IsLegacySupportedJavaScriptLanguage(type))) { | 182 MIMETypeRegistry::IsLegacySupportedJavaScriptLanguage(type))) { |
183 return true; | 183 return true; |
184 } | 184 } |
185 | 185 |
186 return false; | 186 return false; |
187 } | 187 } |
188 | 188 |
189 bool ScriptLoader::IsScriptTypeSupported( | 189 } // namespace |
190 LegacyTypeSupport support_legacy_types) const { | 190 |
| 191 // Step 6 of https://html.spec.whatwg.org/#prepare-a-script |
| 192 bool ScriptLoader::IsValidScriptTypeAndLanguage( |
| 193 const String& type, |
| 194 const String& language, |
| 195 LegacyTypeSupport support_legacy_types, |
| 196 ScriptType& out_script_type) { |
| 197 if (IsValidClassicScriptTypeAndLanguage(type, language, |
| 198 support_legacy_types)) { |
| 199 // - "If the script block's type string is an ASCII case-insensitive match |
| 200 // for any JavaScript MIME type, the script's type is "classic"." |
| 201 // TODO(hiroshige): Annotate and/or cleanup this step. |
| 202 out_script_type = ScriptType::kClassic; |
| 203 return true; |
| 204 } |
| 205 |
| 206 if (RuntimeEnabledFeatures::moduleScriptsEnabled() && type == "module") { |
| 207 // - "If the script block's type string is an ASCII case-insensitive match |
| 208 // for the string "module", the script's type is "module"." |
| 209 out_script_type = ScriptType::kModule; |
| 210 return true; |
| 211 } |
| 212 |
| 213 // - "If neither of the above conditions are true, then abort these steps |
| 214 // at this point. No script is executed." |
| 215 return false; |
| 216 } |
| 217 |
| 218 bool ScriptLoader::IsScriptTypeSupported(LegacyTypeSupport support_legacy_types, |
| 219 ScriptType& out_script_type) const { |
191 return IsValidScriptTypeAndLanguage(element_->TypeAttributeValue(), | 220 return IsValidScriptTypeAndLanguage(element_->TypeAttributeValue(), |
192 element_->LanguageAttributeValue(), | 221 element_->LanguageAttributeValue(), |
193 support_legacy_types); | 222 support_legacy_types, out_script_type); |
194 } | 223 } |
195 | 224 |
196 // https://html.spec.whatwg.org/#prepare-a-script | 225 // https://html.spec.whatwg.org/#prepare-a-script |
197 bool ScriptLoader::PrepareScript(const TextPosition& script_start_position, | 226 bool ScriptLoader::PrepareScript(const TextPosition& script_start_position, |
198 LegacyTypeSupport support_legacy_types) { | 227 LegacyTypeSupport support_legacy_types) { |
199 // 1. "If the script element is marked as having "already started", then | 228 // 1. "If the script element is marked as having "already started", then |
200 // abort these steps at this point. The script is not executed." | 229 // abort these steps at this point. The script is not executed." |
201 if (already_started_) | 230 if (already_started_) |
202 return false; | 231 return false; |
203 | 232 |
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224 // FIXME: HTML5 spec says we should check that all children are either | 253 // FIXME: HTML5 spec says we should check that all children are either |
225 // comments or empty text nodes. | 254 // comments or empty text nodes. |
226 if (!element_->HasSourceAttribute() && !element_->HasChildren()) | 255 if (!element_->HasSourceAttribute() && !element_->HasChildren()) |
227 return false; | 256 return false; |
228 | 257 |
229 // 5. "If the element is not connected, then abort these steps. | 258 // 5. "If the element is not connected, then abort these steps. |
230 // The script is not executed." | 259 // The script is not executed." |
231 if (!element_->IsConnected()) | 260 if (!element_->IsConnected()) |
232 return false; | 261 return false; |
233 | 262 |
234 // 6. | 263 // 6. "Determine the script's type as follows:" |
235 // TODO(hiroshige): Annotate and/or cleanup this step. | 264 // |script_type_| is set here. |
236 if (!IsScriptTypeSupported(support_legacy_types)) | 265 if (!IsScriptTypeSupported(support_legacy_types, script_type_)) |
237 return false; | 266 return false; |
238 | 267 |
239 // 7. "If was-parser-inserted is true, | 268 // 7. "If was-parser-inserted is true, |
240 // then flag the element as "parser-inserted" again, | 269 // then flag the element as "parser-inserted" again, |
241 // and set the element's "non-blocking" flag to false." | 270 // and set the element's "non-blocking" flag to false." |
242 if (was_parser_inserted) { | 271 if (was_parser_inserted) { |
243 parser_inserted_ = true; | 272 parser_inserted_ = true; |
244 non_blocking_ = false; | 273 non_blocking_ = false; |
245 } | 274 } |
246 | 275 |
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257 if (!element_document.ExecutingFrame()) | 286 if (!element_document.ExecutingFrame()) |
258 return false; | 287 return false; |
259 if (!context_document || !context_document->ExecutingFrame()) | 288 if (!context_document || !context_document->ExecutingFrame()) |
260 return false; | 289 return false; |
261 | 290 |
262 // 10. "If scripting is disabled for the script element, then abort these | 291 // 10. "If scripting is disabled for the script element, then abort these |
263 // steps at this point. The script is not executed." | 292 // steps at this point. The script is not executed." |
264 if (!context_document->CanExecuteScripts(kAboutToExecuteScript)) | 293 if (!context_document->CanExecuteScripts(kAboutToExecuteScript)) |
265 return false; | 294 return false; |
266 | 295 |
| 296 // 11. "If the script element has a nomodule content attribute |
| 297 // and the script's type is "classic", then abort these steps. |
| 298 // The script is not executed." |
| 299 // TODO(japhet): Implement this step. |
| 300 |
267 // 13. | 301 // 13. |
268 if (!IsScriptForEventSupported()) | 302 if (!IsScriptForEventSupported()) |
269 return false; | 303 return false; |
270 | 304 |
271 // 14. "If the script element has a charset attribute, | 305 // 14. "If the script element has a charset attribute, |
272 // then let encoding be the result of | 306 // then let encoding be the result of |
273 // getting an encoding from the value of the charset attribute." | 307 // getting an encoding from the value of the charset attribute." |
274 // "If the script element does not have a charset attribute, | 308 // "If the script element does not have a charset attribute, |
275 // or if getting an encoding failed, let encoding | 309 // or if getting an encoding failed, let encoding |
276 // be the same as the encoding of the script element's node document." | 310 // be the same as the encoding of the script element's node document." |
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781 // then abort these steps at this point. The script is not executed. | 815 // then abort these steps at this point. The script is not executed. |
782 return DeprecatedEqualIgnoringCase(event_attribute, "onload") || | 816 return DeprecatedEqualIgnoringCase(event_attribute, "onload") || |
783 DeprecatedEqualIgnoringCase(event_attribute, "onload()"); | 817 DeprecatedEqualIgnoringCase(event_attribute, "onload()"); |
784 } | 818 } |
785 | 819 |
786 String ScriptLoader::ScriptContent() const { | 820 String ScriptLoader::ScriptContent() const { |
787 return element_->TextFromChildren(); | 821 return element_->TextFromChildren(); |
788 } | 822 } |
789 | 823 |
790 } // namespace blink | 824 } // namespace blink |
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