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| 1 /* | 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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| 185 } else { | 185 } else { |
| 186 cacheValue = nullptr; | 186 cacheValue = nullptr; |
| 187 } | 187 } |
| 188 | 188 |
| 189 StylePropertySet* style = nullptr; | 189 StylePropertySet* style = nullptr; |
| 190 if (cacheHash && cacheValue->value) { | 190 if (cacheHash && cacheValue->value) { |
| 191 style = cacheValue->value->value; | 191 style = cacheValue->value->value; |
| 192 cacheCleaner.didHitPresentationAttributeCache(); | 192 cacheCleaner.didHitPresentationAttributeCache(); |
| 193 } else { | 193 } else { |
| 194 style = MutableStylePropertySet::create( | 194 style = MutableStylePropertySet::create( |
| 195 element.isSVGElement() ? SVGAttributeMode : HTMLAttributeMode); | 195 element.isSVGElement() ? SVGAttributeMode : HTMLStandardMode); |
| 196 AttributeCollection attributes = element.attributesWithoutUpdate(); | 196 AttributeCollection attributes = element.attributesWithoutUpdate(); |
| 197 for (const Attribute& attr : attributes) | 197 for (const Attribute& attr : attributes) |
| 198 element.collectStyleForPresentationAttribute( | 198 element.collectStyleForPresentationAttribute( |
| 199 attr.name(), attr.value(), toMutableStylePropertySet(style)); | 199 attr.name(), attr.value(), toMutableStylePropertySet(style)); |
| 200 } | 200 } |
| 201 | 201 |
| 202 if (!cacheHash || cacheValue->value) | 202 if (!cacheHash || cacheValue->value) |
| 203 return style; | 203 return style; |
| 204 | 204 |
| 205 PresentationAttributeCacheEntry* newEntry = | 205 PresentationAttributeCacheEntry* newEntry = |
| 206 new PresentationAttributeCacheEntry; | 206 new PresentationAttributeCacheEntry; |
| 207 newEntry->key = cacheKey; | 207 newEntry->key = cacheKey; |
| 208 newEntry->value = style; | 208 newEntry->value = style; |
| 209 | 209 |
| 210 static const unsigned presentationAttributeCacheMaximumSize = 4096; | 210 static const unsigned presentationAttributeCacheMaximumSize = 4096; |
| 211 if (presentationAttributeCache().size() > | 211 if (presentationAttributeCache().size() > |
| 212 presentationAttributeCacheMaximumSize) { | 212 presentationAttributeCacheMaximumSize) { |
| 213 // FIXME: Discarding the entire cache when it gets too big is probably bad | 213 // FIXME: Discarding the entire cache when it gets too big is probably bad |
| 214 // since it creates a perf "cliff". Perhaps we should use an LRU? | 214 // since it creates a perf "cliff". Perhaps we should use an LRU? |
| 215 presentationAttributeCache().clear(); | 215 presentationAttributeCache().clear(); |
| 216 presentationAttributeCache().set(cacheHash, newEntry); | 216 presentationAttributeCache().set(cacheHash, newEntry); |
| 217 } else { | 217 } else { |
| 218 cacheValue->value = newEntry; | 218 cacheValue->value = newEntry; |
| 219 } | 219 } |
| 220 | 220 |
| 221 return style; | 221 return style; |
| 222 } | 222 } |
| 223 | 223 |
| 224 } // namespace blink | 224 } // namespace blink |
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