| /* |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "third_party/blink/renderer/core/css/style_sheet_candidate.h" |
| |
| #include "third_party/blink/renderer/core/css/style_engine.h" |
| #include "third_party/blink/renderer/core/dom/element.h" |
| #include "third_party/blink/renderer/core/dom/processing_instruction.h" |
| #include "third_party/blink/renderer/core/html/html_document.h" |
| #include "third_party/blink/renderer/core/html/html_link_element.h" |
| #include "third_party/blink/renderer/core/html/html_style_element.h" |
| #include "third_party/blink/renderer/core/html/imports/html_import.h" |
| #include "third_party/blink/renderer/core/html_names.h" |
| #include "third_party/blink/renderer/core/svg/svg_style_element.h" |
| |
| namespace blink { |
| |
| AtomicString StyleSheetCandidate::Title() const { |
| return IsElement() |
| ? To<Element>(GetNode()).FastGetAttribute(html_names::kTitleAttr) |
| : g_null_atom; |
| } |
| |
| bool StyleSheetCandidate::IsXSL() const { |
| return !IsA<HTMLDocument>(GetNode().GetDocument()) && type_ == kPi && |
| To<ProcessingInstruction>(GetNode()).IsXSL(); |
| } |
| |
| bool StyleSheetCandidate::IsImport() const { |
| return type_ == kHTMLLink && To<HTMLLinkElement>(GetNode()).IsImport(); |
| } |
| |
| bool StyleSheetCandidate::IsCSSStyle() const { |
| return type_ == kHTMLStyle || type_ == kSVGStyle; |
| } |
| |
| Document* StyleSheetCandidate::ImportedDocument() const { |
| DCHECK(IsImport()); |
| return To<HTMLLinkElement>(GetNode()).import(); |
| } |
| |
| bool StyleSheetCandidate::IsEnabledViaScript() const { |
| auto* html_link_element = DynamicTo<HTMLLinkElement>(GetNode()); |
| return html_link_element && html_link_element->IsEnabledViaScript(); |
| } |
| |
| bool StyleSheetCandidate::IsEnabledAndLoading() const { |
| auto* html_link_element = DynamicTo<HTMLLinkElement>(GetNode()); |
| return html_link_element && !html_link_element->IsDisabled() && |
| html_link_element->StyleSheetIsLoading(); |
| } |
| |
| bool StyleSheetCandidate::CanBeActivated( |
| const String& current_preferrable_name) const { |
| StyleSheet* sheet = this->Sheet(); |
| auto* css_style_sheet = DynamicTo<CSSStyleSheet>(sheet); |
| if (!css_style_sheet || sheet->disabled()) |
| return false; |
| return css_style_sheet->CanBeActivated(current_preferrable_name); |
| } |
| |
| StyleSheetCandidate::Type StyleSheetCandidate::TypeOf(Node& node) { |
| if (node.getNodeType() == Node::kProcessingInstructionNode) |
| return kPi; |
| |
| if (node.IsHTMLElement()) { |
| if (IsA<HTMLLinkElement>(node)) |
| return kHTMLLink; |
| if (IsA<HTMLStyleElement>(node)) |
| return kHTMLStyle; |
| |
| NOTREACHED(); |
| return kInvalid; |
| } |
| |
| if (IsA<SVGStyleElement>(node)) |
| return kSVGStyle; |
| |
| NOTREACHED(); |
| return kInvalid; |
| } |
| |
| StyleSheet* StyleSheetCandidate::Sheet() const { |
| switch (type_) { |
| case kHTMLLink: |
| return To<HTMLLinkElement>(GetNode()).sheet(); |
| case kHTMLStyle: |
| return To<HTMLStyleElement>(GetNode()).sheet(); |
| case kSVGStyle: |
| return To<SVGStyleElement>(GetNode()).sheet(); |
| case kPi: |
| return To<ProcessingInstruction>(GetNode()).sheet(); |
| default: |
| NOTREACHED(); |
| return nullptr; |
| } |
| } |
| |
| } // namespace blink |