зеркало из https://github.com/mozilla/gecko-dev.git
257 строки
11 KiB
C++
257 строки
11 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef mozilla_dom_InspectorUtils_h
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#define mozilla_dom_InspectorUtils_h
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#include "mozilla/dom/InspectorUtilsBinding.h"
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class nsAtom;
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class nsINode;
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class ComputedStyle;
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namespace mozilla {
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class StyleSheet;
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namespace css {
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class Rule;
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} // namespace css
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namespace dom {
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class CharacterData;
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class Element;
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class InspectorFontFace;
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} // namespace dom
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} // namespace mozilla
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namespace mozilla {
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namespace dom {
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/**
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* A collection of utility methods for use by devtools.
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*/
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class InspectorUtils {
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public:
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static void GetAllStyleSheets(GlobalObject& aGlobal, Document& aDocument,
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bool aDocumentOnly,
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nsTArray<RefPtr<StyleSheet>>& aResult);
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static void GetCSSStyleRules(GlobalObject& aGlobal, Element& aElement,
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const nsAString& aPseudo,
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nsTArray<RefPtr<BindingStyleRule>>& aResult);
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/**
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* Get the line number of a rule.
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*
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* @param aRule The rule.
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* @return The rule's line number. Line numbers are 1-based.
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*/
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static uint32_t GetRuleLine(GlobalObject& aGlobal, css::Rule& aRule);
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/**
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* Get the column number of a rule.
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*
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* @param aRule The rule.
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* @return The rule's column number. Column numbers are 1-based.
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*/
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static uint32_t GetRuleColumn(GlobalObject& aGlobal, css::Rule& aRule);
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/**
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* Like getRuleLine, but if the rule is in a <style> element,
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* returns a line number relative to the start of the element.
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*
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* @param aRule the rule to examine
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* @return the line number of the rule, possibly relative to the
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* <style> element
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*/
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static uint32_t GetRelativeRuleLine(GlobalObject& aGlobal, css::Rule& aRule);
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static bool HasRulesModifiedByCSSOM(GlobalObject& aGlobal,
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StyleSheet& aSheet);
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// Utilities for working with selectors. We don't have a JS OM representation
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// of a single selector or a selector list yet, but given a rule we can index
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// into the selector list.
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//
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// These methods would probably make more sense being [ChromeOnly] APIs on
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// CSSStyleRule itself (bug 1428245).
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static uint32_t GetSelectorCount(GlobalObject& aGlobal,
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BindingStyleRule& aRule);
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// For all three functions below, aSelectorIndex is 0-based
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static void GetSelectorText(GlobalObject& aGlobal, BindingStyleRule& aRule,
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uint32_t aSelectorIndex, nsString& aText,
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ErrorResult& aRv);
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static uint64_t GetSpecificity(GlobalObject& aGlobal, BindingStyleRule& aRule,
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uint32_t aSelectorIndex, ErrorResult& aRv);
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// Note: This does not handle scoped selectors correctly, because it has no
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// idea what the right scope is.
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static bool SelectorMatchesElement(GlobalObject& aGlobal, Element& aElement,
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BindingStyleRule& aRule,
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uint32_t aSelectorIndex,
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const nsAString& aPseudo,
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ErrorResult& aRv);
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// Utilities for working with CSS properties
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//
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// Returns true if the string names a property that is inherited by default.
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static bool IsInheritedProperty(GlobalObject& aGlobal,
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const nsAString& aPropertyName);
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// Get a list of all our supported property names. Optionally
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// property aliases included.
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static void GetCSSPropertyNames(GlobalObject& aGlobal,
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const PropertyNamesOptions& aOptions,
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nsTArray<nsString>& aResult);
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// Get a list of all properties controlled by preference, as well as
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// their corresponding preference names.
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static void GetCSSPropertyPrefs(GlobalObject& aGlobal,
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nsTArray<PropertyPref>& aResult);
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// Get a list of all valid keywords and colors for aProperty.
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static void GetCSSValuesForProperty(GlobalObject& aGlobal,
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const nsAString& aPropertyName,
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nsTArray<nsString>& aResult,
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ErrorResult& aRv);
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// Utilities for working with CSS colors
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static void RgbToColorName(GlobalObject& aGlobal, uint8_t aR, uint8_t aG,
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uint8_t aB, nsAString& aResult, ErrorResult& aRv);
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// Convert a given CSS color string to rgba. Returns null on failure or an
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// InspectorRGBATuple on success.
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//
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// NOTE: Converting a color to RGBA may be lossy when converting from some
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// formats e.g. CMYK.
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static void ColorToRGBA(GlobalObject& aGlobal, const nsAString& aColorString,
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Nullable<InspectorRGBATuple>& aResult);
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// Check whether a given color is a valid CSS color.
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static bool IsValidCSSColor(GlobalObject& aGlobal,
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const nsAString& aColorString);
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// Utilities for obtaining information about a CSS property.
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// Get a list of the longhands corresponding to the given CSS property. If
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// the property is a longhand already, just returns the property itself.
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// Throws on unsupported property names.
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static void GetSubpropertiesForCSSProperty(GlobalObject& aGlobal,
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const nsAString& aProperty,
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nsTArray<nsString>& aResult,
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ErrorResult& aRv);
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// Check whether a given CSS property is a shorthand. Throws on unsupported
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// property names.
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static bool CssPropertyIsShorthand(GlobalObject& aGlobal,
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const nsAString& aProperty,
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ErrorResult& aRv);
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// Check whether values of the given type are valid values for the property.
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// For shorthands, checks whether there's a corresponding longhand property
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// that accepts values of this type. Throws on unsupported properties or
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// unknown types.
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static bool CssPropertySupportsType(GlobalObject& aGlobal,
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const nsAString& aProperty,
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InspectorPropertyType, ErrorResult& aRv);
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static bool IsIgnorableWhitespace(GlobalObject& aGlobalObject,
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CharacterData& aDataNode) {
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return IsIgnorableWhitespace(aDataNode);
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}
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static bool IsIgnorableWhitespace(CharacterData& aDataNode);
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// Returns the "parent" of a node. The parent of a document node is the
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// frame/iframe containing that document. aShowingAnonymousContent says
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// whether we are showing anonymous content.
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static nsINode* GetParentForNode(nsINode& aNode,
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bool aShowingAnonymousContent);
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static nsINode* GetParentForNode(GlobalObject& aGlobalObject, nsINode& aNode,
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bool aShowingAnonymousContent) {
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return GetParentForNode(aNode, aShowingAnonymousContent);
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}
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static already_AddRefed<nsINodeList> GetChildrenForNode(
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GlobalObject& aGlobalObject, nsINode& aNode,
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bool aShowingAnonymousContent) {
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return GetChildrenForNode(aNode, aShowingAnonymousContent);
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}
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static already_AddRefed<nsINodeList> GetChildrenForNode(
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nsINode& aNode, bool aShowingAnonymousContent);
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static void GetBindingURLs(GlobalObject& aGlobal, Element& aElement,
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nsTArray<nsString>& aResult);
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/**
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* Setting and removing content state on an element. Both these functions
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* call EventStateManager::SetContentState internally; the difference is
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* that for the remove case we simply pass in nullptr for the element.
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* Use them accordingly.
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*
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* When removing the active state, you may optionally also clear the active
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* document as well by setting aClearActiveDocument
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*
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* @return Returns true if the state was set successfully. See more details
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* in EventStateManager.h SetContentState.
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*/
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static bool SetContentState(GlobalObject& aGlobal, Element& aElement,
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uint64_t aState, ErrorResult& aRv);
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static bool RemoveContentState(GlobalObject& aGlobal, Element& aElement,
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uint64_t aState, bool aClearActiveDocument,
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ErrorResult& aRv);
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static uint64_t GetContentState(GlobalObject& aGlobal, Element& aElement);
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static void GetUsedFontFaces(GlobalObject& aGlobal, nsRange& aRange,
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uint32_t aMaxRanges, // max number of ranges to
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// record for each face
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bool aSkipCollapsedWhitespace,
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nsTArray<nsAutoPtr<InspectorFontFace>>& aResult,
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ErrorResult& aRv);
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/**
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* Get the names of all the supported pseudo-elements.
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* Pseudo-elements which are only accepted in UA style sheets are
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* not included.
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*/
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static void GetCSSPseudoElementNames(GlobalObject& aGlobal,
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nsTArray<nsString>& aResult);
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// pseudo-class style locking methods. aPseudoClass must be a valid
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// pseudo-class selector string, e.g. ":hover". ":any-link" and
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// non-event-state pseudo-classes are ignored. aEnabled sets whether the
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// psuedo-class should be locked to on or off.
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static void AddPseudoClassLock(GlobalObject& aGlobal, Element& aElement,
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const nsAString& aPseudoClass, bool aEnabled);
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static void RemovePseudoClassLock(GlobalObject& aGlobal, Element& aElement,
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const nsAString& aPseudoClass);
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static bool HasPseudoClassLock(GlobalObject& aGlobal, Element& aElement,
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const nsAString& aPseudoClass);
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static void ClearPseudoClassLocks(GlobalObject& aGlobal, Element& aElement);
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/**
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* Parse CSS and update the style sheet in place.
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*
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* @param DOMCSSStyleSheet aSheet
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* @param DOMString aInput
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* The new source string for the style sheet.
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*/
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static void ParseStyleSheet(GlobalObject& aGlobal, StyleSheet& aSheet,
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const nsAString& aInput, ErrorResult& aRv);
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/**
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* Check if the provided name can be custom element name.
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*/
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static bool IsCustomElementName(GlobalObject&, const nsAString& aName,
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const nsAString& aNamespaceURI);
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private:
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static already_AddRefed<ComputedStyle> GetCleanComputedStyleForElement(
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Element* aElement, nsAtom* aPseudo);
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_InspectorUtils_h
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