| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // Author: mmohabey@google.com (Megha Mohabey) |
| |
| #include "net/instaweb/rewriter/public/deterministic_js_filter.h" |
| |
| #include "net/instaweb/rewriter/public/rewrite_driver.h" |
| #include "net/instaweb/rewriter/public/server_context.h" |
| #include "net/instaweb/rewriter/public/static_asset_manager.h" |
| #include "pagespeed/kernel/base/string_util.h" |
| #include "pagespeed/kernel/html/html_element.h" |
| #include "pagespeed/kernel/html/html_name.h" |
| |
| namespace net_instaweb { |
| |
| DeterministicJsFilter::DeterministicJsFilter(RewriteDriver* driver) |
| : CommonFilter(driver), |
| found_head_(false) { |
| } |
| |
| DeterministicJsFilter::~DeterministicJsFilter() {} |
| |
| void DeterministicJsFilter::StartDocumentImpl() { |
| found_head_ = false; |
| } |
| |
| void DeterministicJsFilter::StartElementImpl(HtmlElement* element) { |
| if (!found_head_ && element->keyword() == HtmlName::kHead) { |
| found_head_ = true; |
| HtmlElement* script = driver()->NewElement(element, HtmlName::kScript); |
| driver()->InsertNodeAfterCurrent(script); |
| StaticAssetManager* static_asset_manager = |
| driver()->server_context()->static_asset_manager(); |
| StringPiece deterministic_js = |
| static_asset_manager->GetAsset( |
| StaticAssetEnum::DETERMINISTIC_JS, driver()->options()); |
| AddJsToElement(deterministic_js, script); |
| driver()->AddAttribute(script, HtmlName::kDataPagespeedNoDefer, NULL); |
| } |
| } |
| |
| } // namespace net_instaweb |