mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-18 15:55:36 +00:00
5aab8db970
It's been removed for a while on Nightly without any known regressions. This gives us a full beta cycle of telemetry and two nightly cycles without the API before shipping. This only removes the API, followup work will replace serialization by Servo's, and remove the remaining DOM interfaces. MozReview-Commit-ID: 2m1taYg5xEr
430 lines
18 KiB
C++
430 lines
18 KiB
C++
/* -*- 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 mozilla_CSSEditUtils_h
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#define mozilla_CSSEditUtils_h
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#include "mozilla/ChangeStyleTransaction.h" // for ChangeStyleTransaction
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#include "nsCOMPtr.h" // for already_AddRefed
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#include "nsStringFwd.h"
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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 nsAtom;
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class nsIContent;
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class nsICSSDeclaration;
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class nsINode;
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namespace mozilla {
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class HTMLEditor;
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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(HTMLEditor* 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] An atom containing 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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static bool IsCSSEditableProperty(nsINode* aNode, nsAtom* aProperty,
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nsAtom* 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, nsAtom& aProperty,
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const nsAString& aValue, bool aSuppressTxn = false);
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nsresult SetCSSPropertyPixels(dom::Element& aElement,
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nsAtom& aProperty, int32_t aIntValue);
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nsresult RemoveCSSProperty(dom::Element& aElement,
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nsAtom& aProperty,
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const nsAString& aPropertyValue,
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bool aSuppressTxn = false);
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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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static nsresult GetSpecifiedProperty(nsINode& aNode, nsAtom& aProperty,
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nsAString& aValue);
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static nsresult GetComputedProperty(nsINode& aNode, nsAtom& 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(nsINode& aNode, nsAtom* 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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static bool IsCSSInvertible(nsAtom& aProperty, nsAtom* 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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static 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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static 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] An atom of 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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static nsresult GetCSSEquivalentToHTMLInlineStyleSet(nsINode* aNode,
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nsAtom* aHTMLProperty,
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nsAtom* 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/atom to an attribute name or nullptr
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* if irrelevant.
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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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* @return A boolean being true if the css properties are
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* not same as initial value.
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*/
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static bool IsCSSEquivalentToHTMLInlineStyleSet(nsINode* aContent,
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nsAtom* aProperty,
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nsAtom* aAttribute,
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nsAString& aValue,
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StyleType aStyleType);
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static bool IsCSSEquivalentToHTMLInlineStyleSet(nsINode* aContent,
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nsAtom* aProperty,
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nsAtom* aAttribute,
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const nsAString& aValue,
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StyleType aStyleType);
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static bool IsCSSEquivalentToHTMLInlineStyleSet(nsINode* aContent,
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nsAtom* aProperty,
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const nsAString* aAttribute,
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nsAString& aValue,
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StyleType aStyleType);
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/**
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* This is a kind of IsCSSEquivalentToHTMLInlineStyleSet.
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* IsCSSEquivalentToHTMLInlineStyleSet returns whether the properties
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* aren't same as initial value. But this method returns whether the
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* properties aren't set.
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* If node is <span style="font-weight: normal"/>,
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* - IsCSSEquivalentToHTMLInlineStyleSet returns false.
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* - HaveCSSEquivalentStyles returns true.
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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] An atom to an attribute name or nullptr
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* if irrelevant.
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* @param aStyleType [IN] eSpecified or eComputed.
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* @return A boolean being true if the css properties are
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* not set.
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*/
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static bool HaveCSSEquivalentStyles(nsINode& aNode,
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nsAtom* aProperty,
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nsAtom* aAttribute,
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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] An atom to an attribute name or nullptr
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* if 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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* @return The number of CSS properties set by the call.
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*/
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int32_t SetCSSEquivalentToHTMLStyle(dom::Element* aElement,
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nsAtom* aProperty,
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nsAtom* 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] An atom 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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nsAtom* aHTMLProperty,
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nsAtom* 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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*
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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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static void ParseLength(const nsAString& aString, float* aValue,
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nsAtom** 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() const;
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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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static bool ElementsSameStyle(dom::Element* aFirstNode,
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dom::Element* 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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static nsresult GetInlineStyles(dom::Element* aElement,
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nsICSSDeclaration** aCssDecl,
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uint32_t* aLength);
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public:
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/**
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* Returns aNode itself if it is an element node, or the first ancestors
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* being an element node if aNode is not one itself.
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*
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* @param aNode [IN] A node
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* @param aElement [OUT] The deepest element node containing aNode
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* (possibly aNode itself)
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*/
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static dom::Element* GetElementContainerOrSelf(nsINode* aNode);
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/**
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* Gets the computed style for a given element. Can return null.
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*/
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static already_AddRefed<nsComputedDOMStyle>
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GetComputedStyle(dom::Element* aElement);
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private:
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/**
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* Retrieves the CSS property atom from an enum.
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*
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* @param aProperty [IN] The enum value for the property.
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* @param aAtom [OUT] The corresponding atom.
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*/
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static void GetCSSPropertyAtom(nsCSSEditableProperty aProperty,
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nsAtom** aAtom);
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/**
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* Retrieves the CSS declarations equivalent to a HTML style value for
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* a given equivalence table.
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*
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* @param aPropertyArray [OUT] The array of css properties.
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* @param aValueArray [OUT] The array of values for the CSS properties
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* above.
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* @param aEquivTable [IN] The equivalence table.
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* @param aValue [IN] The HTML style value.
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* @param aGetOrRemoveRequest [IN] A boolean value being true if the call to
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* the current method is made for
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* GetCSSEquivalentToHTMLInlineStyleSet() or
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* RemoveCSSEquivalentToHTMLInlineStyleSet().
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*/
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static void BuildCSSDeclarations(nsTArray<nsAtom*>& aPropertyArray,
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nsTArray<nsString>& cssValueArray,
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const CSSEquivTable* aEquivTable,
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const nsAString* aValue,
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bool aGetOrRemoveRequest);
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/**
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* Retrieves the CSS declarations equivalent to the given HTML
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* property/attribute/value for a given node.
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*
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* @param aNode [IN] The DOM node.
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* @param aHTMLProperty [IN] An atom containing an HTML property.
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* @param aAttribute [IN] An atom to an attribute name or nullptr
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* if irrelevant
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* @param aValue [IN] The attribute value.
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* @param aPropertyArray [OUT] The array of CSS properties.
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* @param aValueArray [OUT] The array of values for the CSS properties
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* above.
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* @param aGetOrRemoveRequest [IN] A boolean value being true if the call to
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* the current method is made for
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* GetCSSEquivalentToHTMLInlineStyleSet() or
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* RemoveCSSEquivalentToHTMLInlineStyleSet().
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*/
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static void GenerateCSSDeclarationsFromHTMLStyle(
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dom::Element* aNode,
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nsAtom* aHTMLProperty,
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nsAtom* aAttribute,
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const nsAString* aValue,
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nsTArray<nsAtom*>& aPropertyArray,
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nsTArray<nsString>& aValueArray,
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bool aGetOrRemoveRequest);
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/**
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* Back-end for GetSpecifiedProperty and GetComputedProperty.
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*
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* @param aNode [IN] A DOM node.
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* @param aProperty [IN] A CSS property.
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* @param aValue [OUT] The retrieved value for this property.
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* @param aStyleType [IN] eSpecified or eComputed.
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*/
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static nsresult GetCSSInlinePropertyBase(nsINode* aNode, nsAtom* aProperty,
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nsAString& aValue,
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StyleType aStyleType);
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private:
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HTMLEditor* mHTMLEditor;
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bool mIsCSSPrefChecked;
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};
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#define NS_EDITOR_INDENT_INCREMENT_IN 0.4134f
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#define NS_EDITOR_INDENT_INCREMENT_CM 1.05f
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#define NS_EDITOR_INDENT_INCREMENT_MM 10.5f
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#define NS_EDITOR_INDENT_INCREMENT_PT 29.76f
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#define NS_EDITOR_INDENT_INCREMENT_PC 2.48f
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#define NS_EDITOR_INDENT_INCREMENT_EM 3
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#define NS_EDITOR_INDENT_INCREMENT_EX 6
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#define NS_EDITOR_INDENT_INCREMENT_PX 40
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#define NS_EDITOR_INDENT_INCREMENT_PERCENT 4
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} // namespace mozilla
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#endif // #ifndef mozilla_CSSEditUtils_h
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