зеркало из https://github.com/mozilla/gecko-dev.git
474 строки
20 KiB
C
474 строки
20 KiB
C
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef CSSEditUtils_h
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#define CSSEditUtils_h
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#include "ChangeStyleTransaction.h" // for ChangeStyleTransaction::EChangeType
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#include "nsCOMPtr.h" // for already_AddRefed
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#include "nsTArray.h" // for nsTArray
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#include "nscore.h" // for nsAString, nsresult, nullptr
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class nsComputedDOMStyle;
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class nsHTMLEditor;
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class nsIAtom;
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class nsIContent;
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class nsIDOMCSSStyleDeclaration;
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class nsIDOMElement;
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class nsIDOMNode;
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class nsINode;
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class nsString;
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namespace mozilla {
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namespace dom {
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class Element;
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} // namespace dom
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typedef void (*nsProcessValueFunc)(const nsAString* aInputString,
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nsAString& aOutputString,
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const char* aDefaultValueString,
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const char* aPrependString,
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const char* aAppendString);
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class CSSEditUtils final
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{
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public:
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explicit CSSEditUtils(nsHTMLEditor* aEditor);
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~CSSEditUtils();
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enum nsCSSEditableProperty
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{
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eCSSEditableProperty_NONE=0,
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eCSSEditableProperty_background_color,
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eCSSEditableProperty_background_image,
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eCSSEditableProperty_border,
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eCSSEditableProperty_caption_side,
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eCSSEditableProperty_color,
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eCSSEditableProperty_float,
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eCSSEditableProperty_font_family,
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eCSSEditableProperty_font_size,
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eCSSEditableProperty_font_style,
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eCSSEditableProperty_font_weight,
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eCSSEditableProperty_height,
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eCSSEditableProperty_list_style_type,
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eCSSEditableProperty_margin_left,
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eCSSEditableProperty_margin_right,
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eCSSEditableProperty_text_align,
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eCSSEditableProperty_text_decoration,
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eCSSEditableProperty_vertical_align,
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eCSSEditableProperty_whitespace,
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eCSSEditableProperty_width
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};
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enum StyleType { eSpecified, eComputed };
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struct CSSEquivTable
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{
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nsCSSEditableProperty cssProperty;
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nsProcessValueFunc processValueFunctor;
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const char* defaultValue;
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const char* prependValue;
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const char* appendValue;
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bool gettable;
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bool caseSensitiveValue;
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};
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/**
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* Answers true if the given combination element_name/attribute_name
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* has a CSS equivalence in this implementation.
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*
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* @param aNode [IN] A DOM node.
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* @param aProperty [IN] An atom containing a HTML tag name.
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* @param aAttribute [IN] A string containing the name of a HTML
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* attribute carried by the element above.
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* @return A boolean saying if the tag/attribute has a CSS
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* equiv.
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*/
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bool IsCSSEditableProperty(nsINode* aNode, nsIAtom* aProperty,
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const nsAString* aAttribute);
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/**
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* Adds/remove a CSS declaration to the STYLE atrribute carried by a given
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* element.
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*
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* @param aElement [IN] A DOM element.
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* @param aProperty [IN] An atom containing the CSS property to set.
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* @param aValue [IN] A string containing the value of the CSS
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* property.
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* @param aSuppressTransaction [IN] A boolean indicating, when true,
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* that no transaction should be recorded.
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*/
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nsresult SetCSSProperty(dom::Element& aElement, nsIAtom& aProperty,
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const nsAString& aValue, bool aSuppressTxn = false);
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nsresult SetCSSPropertyPixels(dom::Element& aElement,
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nsIAtom& aProperty, int32_t aIntValue);
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nsresult RemoveCSSProperty(dom::Element& aElement,
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nsIAtom& aProperty,
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const nsAString& aPropertyValue,
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bool aSuppressTxn = false);
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/**
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* Directly adds/remove a CSS declaration to the STYLE atrribute carried by
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* a given element without going through the transaction manager.
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*
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* @param aElement [IN] A DOM element.
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* @param aProperty [IN] A string containing the CSS property to
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* set/remove.
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* @param aValue [IN] A string containing the new value of the CSS
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* property.
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*/
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nsresult SetCSSProperty(nsIDOMElement* aElement,
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const nsAString& aProperty,
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const nsAString& aValue);
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nsresult SetCSSPropertyPixels(nsIDOMElement* aElement,
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const nsAString& aProperty,
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int32_t aIntValue);
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/**
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* Gets the specified/computed style value of a CSS property for a given
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* node (or its element ancestor if it is not an element).
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*
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* @param aNode [IN] A DOM node.
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* @param aProperty [IN] An atom containing the CSS property to get.
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* @param aPropertyValue [OUT] The retrieved value of the property.
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*/
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nsresult GetSpecifiedProperty(nsINode& aNode, nsIAtom& aProperty,
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nsAString& aValue);
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nsresult GetComputedProperty(nsINode& aNode, nsIAtom& aProperty,
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nsAString& aValue);
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/**
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* Removes a CSS property from the specified declarations in STYLE attribute
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* and removes the node if it is an useless span.
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*
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* @param aNode [IN] The specific node we want to remove a style
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* from.
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* @param aProperty [IN] The CSS property atom to remove.
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* @param aPropertyValue [IN] The value of the property we have to remove
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* if the property accepts more than one value.
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*/
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nsresult RemoveCSSInlineStyle(nsIDOMNode* aNode, nsIAtom* aProperty,
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const nsAString& aPropertyValue);
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/**
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* Answers true is the property can be removed by setting a "none" CSS value
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* on a node.
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*
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* @param aProperty [IN] An atom containing a CSS property.
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* @param aAttribute [IN] Pointer to an attribute name or null if this
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* information is irrelevant.
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* @return A boolean saying if the property can be remove by
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* setting a "none" value.
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*/
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bool IsCSSInvertible(nsIAtom& aProperty, const nsAString* aAttribute);
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/**
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* Get the default browser background color if we need it for
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* GetCSSBackgroundColorState().
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*
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* @param aColor [OUT] The default color as it is defined in prefs.
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*/
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void GetDefaultBackgroundColor(nsAString& aColor);
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/**
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* Get the default length unit used for CSS Indent/Outdent.
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*
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* @param aLengthUnit [OUT] The default length unit as it is defined in
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* prefs.
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*/
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void GetDefaultLengthUnit(nsAString & aLengthUnit);
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/**
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* Returns the list of values for the CSS equivalences to
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* the passed HTML style for the passed node.
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*
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* @param aNode [IN] A DOM node.
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* @param aHTMLProperty [IN] An atom containing an HTML property.
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* @param aAttribute [IN] A pointer to an attribute name or nullptr if
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* irrelevant.
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* @param aValueString [OUT] The list of CSS values.
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* @param aStyleType [IN] eSpecified or eComputed.
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*/
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nsresult GetCSSEquivalentToHTMLInlineStyleSet(nsINode* aNode,
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nsIAtom* aHTMLProperty,
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const nsAString* aAttribute,
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nsAString& aValueString,
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StyleType aStyleType);
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/**
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* Does the node aNode (or his parent if it is not an element node) carries
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* the CSS equivalent styles to the HTML style for this node ?
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*
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* @param aNode [IN] A DOM node.
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* @param aHTMLProperty [IN] An atom containing an HTML property.
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* @param aAttribute [IN] A pointer to an attribute name or nullptr if
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* irrelevant.
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* @param aIsSet [OUT] A boolean being true if the css properties are
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* set.
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* @param aValueString [IN/OUT] The attribute value (in) the list of CSS
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* values (out).
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* @param aStyleType [IN] eSpecified or eComputed.
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*
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* The nsIContent variant returns aIsSet instead of using an out parameter.
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*/
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bool IsCSSEquivalentToHTMLInlineStyleSet(nsINode* aContent,
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nsIAtom* aProperty,
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const nsAString* aAttribute,
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const nsAString& aValue,
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StyleType aStyleType);
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bool IsCSSEquivalentToHTMLInlineStyleSet(nsINode* aContent,
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nsIAtom* aProperty,
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const nsAString* aAttribute,
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nsAString& aValue,
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StyleType aStyleType);
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nsresult IsCSSEquivalentToHTMLInlineStyleSet(nsIDOMNode* aNode,
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nsIAtom* aHTMLProperty,
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const nsAString* aAttribute,
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bool& aIsSet,
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nsAString& aValueString,
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StyleType aStyleType);
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/**
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* Adds to the node the CSS inline styles equivalent to the HTML style
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* and return the number of CSS properties set by the call.
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*
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* @param aNode [IN] A DOM node.
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* @param aHTMLProperty [IN] An atom containing an HTML property.
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* @param aAttribute [IN] A pointer to an attribute name or nullptr if
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* irrelevant.
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* @param aValue [IN] The attribute value.
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* @param aCount [OUT] The number of CSS properties set by the call.
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* @param aSuppressTransaction [IN] A boolean indicating, when true,
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* that no transaction should be recorded.
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*
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* aCount is returned by the dom::Element variant instead of being an out
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* parameter.
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*/
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int32_t SetCSSEquivalentToHTMLStyle(dom::Element* aElement,
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nsIAtom* aProperty,
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const nsAString* aAttribute,
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const nsAString* aValue,
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bool aSuppressTransaction);
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nsresult SetCSSEquivalentToHTMLStyle(nsIDOMNode* aNode,
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nsIAtom* aHTMLProperty,
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const nsAString* aAttribute,
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const nsAString* aValue,
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int32_t* aCount,
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bool aSuppressTransaction);
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/**
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* Removes from the node the CSS inline styles equivalent to the HTML style.
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*
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* @param aNode [IN] A DOM node.
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* @param aHTMLProperty [IN] An atom containing an HTML property.
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* @param aAttribute [IN] A pointer to an attribute name or nullptr if
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* irrelevant.
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* @param aValue [IN] The attribute value.
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* @param aSuppressTransaction [IN] A boolean indicating, when true,
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* that no transaction should be recorded.
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*/
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nsresult RemoveCSSEquivalentToHTMLStyle(nsIDOMNode* aNode,
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nsIAtom* aHTMLProperty,
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const nsAString* aAttribute,
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const nsAString* aValue,
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bool aSuppressTransaction);
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/**
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* Removes from the node the CSS inline styles equivalent to the HTML style.
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*
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* @param aElement [IN] A DOM Element (must not be null).
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* @param aHTMLProperty [IN] An atom containing an HTML property.
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* @param aAttribute [IN] A pointer to an attribute name or nullptr if
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* irrelevant.
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* @param aValue [IN] The attribute value.
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* @param aSuppressTransaction [IN] A boolean indicating, when true,
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* that no transaction should be recorded.
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*/
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nsresult RemoveCSSEquivalentToHTMLStyle(dom::Element* aElement,
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nsIAtom* aHTMLProperty,
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const nsAString* aAttribute,
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const nsAString* aValue,
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bool aSuppressTransaction);
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/**
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* Parses a "xxxx.xxxxxuuu" string where x is a digit and u an alpha char
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* we need such a parser because
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* nsIDOMCSSStyleDeclaration::GetPropertyCSSValue() is not implemented.
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*
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* @param aString [IN] Input string to parse.
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* @param aValue [OUT] Numeric part.
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* @param aUnit [OUT] Unit part.
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*/
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void ParseLength(const nsAString& aString, float* aValue, nsIAtom** aUnit);
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/**
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* Sets the mIsCSSPrefChecked private member; used as callback from observer
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* when the CSS pref state is changed.
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*
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* @param aIsCSSPrefChecked [IN] The new boolean state for the pref.
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*/
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void SetCSSEnabled(bool aIsCSSPrefChecked);
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/**
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* Retrieves the mIsCSSPrefChecked private member, true if the CSS pref is
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* checked, false if it is not.
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*
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* @return the boolean value of the CSS pref.
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*/
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bool IsCSSPrefChecked();
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/**
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* ElementsSameStyle compares two elements and checks if they have the same
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* specified CSS declarations in the STYLE attribute.
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* The answer is always false if at least one of them carries an ID or a
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* class.
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*
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* @param aFirstNode [IN] A DOM node.
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* @param aSecondNode [IN] A DOM node.
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* @return true if the two elements are considered to
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* have same styles.
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*/
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bool ElementsSameStyle(dom::Element* aFirstNode,
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dom::Element* aSecondNode);
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bool ElementsSameStyle(nsIDOMNode* aFirstNode, nsIDOMNode* aSecondNode);
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/**
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* Get the specified inline styles (style attribute) for an element.
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*
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* @param aElement [IN] The element node.
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* @param aCssDecl [OUT] The CSS declaration corresponding to the
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* style attribute.
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* @param aLength [OUT] The number of declarations in aCssDecl.
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*/
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nsresult GetInlineStyles(dom::Element* aElement,
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nsIDOMCSSStyleDeclaration** aCssDecl,
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uint32_t* aLength);
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nsresult GetInlineStyles(nsIDOMElement* aElement,
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nsIDOMCSSStyleDeclaration** aCssDecl,
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uint32_t* aLength);
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private:
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nsresult GetInlineStyles(nsISupports* aElement,
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nsIDOMCSSStyleDeclaration** aCssDecl,
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uint32_t* aLength);
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public:
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/**
|
||
|
|
* Returns aNode itself if it is an element node, or the first ancestors
|
||
|
|
* being an element node if aNode is not one itself.
|
||
|
|
*
|
||
|
|
* @param aNode [IN] A node
|
||
|
|
* @param aElement [OUT] The deepest element node containing aNode
|
||
|
|
* (possibly aNode itself)
|
||
|
|
*/
|
||
|
|
dom::Element* GetElementContainerOrSelf(nsINode* aNode);
|
||
|
|
already_AddRefed<nsIDOMElement> GetElementContainerOrSelf(nsIDOMNode* aNode);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the computed style for a given element. Can return null.
|
||
|
|
*/
|
||
|
|
already_AddRefed<nsComputedDOMStyle> GetComputedStyle(dom::Element* aElement);
|
||
|
|
|
||
|
|
private:
|
||
|
|
/**
|
||
|
|
* Retrieves the CSS property atom from an enum.
|
||
|
|
*
|
||
|
|
* @param aProperty [IN] The enum value for the property.
|
||
|
|
* @param aAtom [OUT] The corresponding atom.
|
||
|
|
*/
|
||
|
|
void GetCSSPropertyAtom(nsCSSEditableProperty aProperty, nsIAtom** aAtom);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieves the CSS declarations equivalent to a HTML style value for
|
||
|
|
* a given equivalence table.
|
||
|
|
*
|
||
|
|
* @param aPropertyArray [OUT] The array of css properties.
|
||
|
|
* @param aValueArray [OUT] The array of values for the CSS properties
|
||
|
|
* above.
|
||
|
|
* @param aEquivTable [IN] The equivalence table.
|
||
|
|
* @param aValue [IN] The HTML style value.
|
||
|
|
* @param aGetOrRemoveRequest [IN] A boolean value being true if the call to
|
||
|
|
* the current method is made for
|
||
|
|
* GetCSSEquivalentToHTMLInlineStyleSet() or
|
||
|
|
* RemoveCSSEquivalentToHTMLInlineStyleSet().
|
||
|
|
*/
|
||
|
|
void BuildCSSDeclarations(nsTArray<nsIAtom*>& aPropertyArray,
|
||
|
|
nsTArray<nsString>& cssValueArray,
|
||
|
|
const CSSEquivTable* aEquivTable,
|
||
|
|
const nsAString* aValue,
|
||
|
|
bool aGetOrRemoveRequest);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieves the CSS declarations equivalent to the given HTML
|
||
|
|
* property/attribute/value for a given node.
|
||
|
|
*
|
||
|
|
* @param aNode [IN] The DOM node.
|
||
|
|
* @param aHTMLProperty [IN] An atom containing an HTML property.
|
||
|
|
* @param aAttribute [IN] A pointer to an attribute name or nullptr
|
||
|
|
* if irrelevant
|
||
|
|
* @param aValue [IN] The attribute value.
|
||
|
|
* @param aPropertyArray [OUT] The array of CSS properties.
|
||
|
|
* @param aValueArray [OUT] The array of values for the CSS properties
|
||
|
|
* above.
|
||
|
|
* @param aGetOrRemoveRequest [IN] A boolean value being true if the call to
|
||
|
|
* the current method is made for
|
||
|
|
* GetCSSEquivalentToHTMLInlineStyleSet() or
|
||
|
|
* RemoveCSSEquivalentToHTMLInlineStyleSet().
|
||
|
|
*/
|
||
|
|
void GenerateCSSDeclarationsFromHTMLStyle(dom::Element* aNode,
|
||
|
|
nsIAtom* aHTMLProperty,
|
||
|
|
const nsAString* aAttribute,
|
||
|
|
const nsAString* aValue,
|
||
|
|
nsTArray<nsIAtom*>& aPropertyArray,
|
||
|
|
nsTArray<nsString>& aValueArray,
|
||
|
|
bool aGetOrRemoveRequest);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a Transaction for setting or removing a CSS property. Never
|
||
|
|
* returns null.
|
||
|
|
*
|
||
|
|
* @param aElement [IN] A DOM element.
|
||
|
|
* @param aProperty [IN] A CSS property.
|
||
|
|
* @param aValue [IN] The value to set for this CSS property.
|
||
|
|
* @param aChangeType [IN] eSet to set, eRemove to remove.
|
||
|
|
*/
|
||
|
|
already_AddRefed<ChangeStyleTransaction>
|
||
|
|
CreateCSSPropertyTxn(dom::Element& aElement,
|
||
|
|
nsIAtom& aProperty, const nsAString& aValue,
|
||
|
|
ChangeStyleTransaction::EChangeType aChangeType);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Back-end for GetSpecifiedProperty and GetComputedProperty.
|
||
|
|
*
|
||
|
|
* @param aNode [IN] A DOM node.
|
||
|
|
* @param aProperty [IN] A CSS property.
|
||
|
|
* @param aValue [OUT] The retrieved value for this property.
|
||
|
|
* @param aStyleType [IN] eSpecified or eComputed.
|
||
|
|
*/
|
||
|
|
nsresult GetCSSInlinePropertyBase(nsINode* aNode, nsIAtom* aProperty,
|
||
|
|
nsAString& aValue, StyleType aStyleType);
|
||
|
|
|
||
|
|
private:
|
||
|
|
nsHTMLEditor* mHTMLEditor;
|
||
|
|
bool mIsCSSPrefChecked;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define NS_EDITOR_INDENT_INCREMENT_IN 0.4134f
|
||
|
|
#define NS_EDITOR_INDENT_INCREMENT_CM 1.05f
|
||
|
|
#define NS_EDITOR_INDENT_INCREMENT_MM 10.5f
|
||
|
|
#define NS_EDITOR_INDENT_INCREMENT_PT 29.76f
|
||
|
|
#define NS_EDITOR_INDENT_INCREMENT_PC 2.48f
|
||
|
|
#define NS_EDITOR_INDENT_INCREMENT_EM 3
|
||
|
|
#define NS_EDITOR_INDENT_INCREMENT_EX 6
|
||
|
|
#define NS_EDITOR_INDENT_INCREMENT_PX 40
|
||
|
|
#define NS_EDITOR_INDENT_INCREMENT_PERCENT 4
|
||
|
|
|
||
|
|
} // namespace mozilla
|
||
|
|
|
||
|
|
#endif // #ifndef CSSEditUtils_h
|