| // Copyright 2019 The Cobalt Authors. All Rights Reserved. |
| // |
| // 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. |
| |
| #include "cobalt/debug/backend/css_agent.h" |
| |
| #include "cobalt/dom/document.h" |
| #include "cobalt/dom/html_element.h" |
| |
| namespace cobalt { |
| namespace debug { |
| namespace backend { |
| |
| namespace { |
| // Definitions from the set specified here: |
| // https://chromedevtools.github.io/devtools-protocol/tot/DOM |
| constexpr char kInspectorDomain[] = "CSS"; |
| |
| // File to load JavaScript CSS debugging domain implementation from. |
| constexpr char kScriptFile[] = "css_agent.js"; |
| } // namespace |
| |
| CSSAgent::CSSAgent(DebugDispatcher* dispatcher) |
| : dispatcher_(dispatcher), |
| ALLOW_THIS_IN_INITIALIZER_LIST(commands_(this, kInspectorDomain)) { |
| DCHECK(dispatcher_); |
| |
| commands_["disable"] = &CSSAgent::Disable; |
| commands_["enable"] = &CSSAgent::Enable; |
| } |
| |
| void CSSAgent::Thaw(JSONObject agent_state) { |
| dispatcher_->AddDomain(kInspectorDomain, commands_.Bind()); |
| script_loaded_ = dispatcher_->RunScriptFile(kScriptFile); |
| DLOG_IF(ERROR, !script_loaded_) << "Failed to load " << kScriptFile; |
| } |
| |
| JSONObject CSSAgent::Freeze() { |
| dispatcher_->RemoveDomain(kInspectorDomain); |
| return JSONObject(); |
| } |
| |
| void CSSAgent::Enable(const Command& command) { |
| if (script_loaded_) { |
| command.SendResponse(); |
| } else { |
| command.SendErrorResponse(Command::kInternalError, |
| "Cannot create CSS inspector."); |
| } |
| } |
| |
| void CSSAgent::Disable(const Command& command) { command.SendResponse(); } |
| |
| CSSAgent::CSSStyleRuleSequence CSSAgent::GetMatchingCSSRules( |
| const scoped_refptr<dom::Element>& element) { |
| CSSStyleRuleSequence css_rules; |
| auto html_element = element->AsHTMLElement(); |
| if (html_element) { |
| html_element->node_document()->UpdateComputedStyleOnElementAndAncestor( |
| html_element.get()); |
| for (const auto& matching_rule : *html_element->matching_rules()) { |
| css_rules.push_back(matching_rule.first); |
| } |
| } |
| return css_rules; |
| } |
| |
| } // namespace backend |
| } // namespace debug |
| } // namespace cobalt |