зеркало из https://github.com/mozilla/pjs.git
419 строки
19 KiB
C++
419 строки
19 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.1 (the "License"); you may not use this file except in
|
|
* compliance with the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Original Author: Daniel Glazman <glazman@netscape.com>
|
|
*
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the NPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the NPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef nsHTMLCSSUtils_h__
|
|
#define nsHTMLCSSUtils_h__
|
|
|
|
#include "nsCOMPtr.h"
|
|
#include "nsString.h"
|
|
#include "nsIDOMViewCSS.h"
|
|
#include "nsIDOMNode.h"
|
|
#include "nsIDOMElement.h"
|
|
#include "nsIHTMLEditor.h"
|
|
#include "ChangeCSSInlineStyleTxn.h"
|
|
#include "nsEditProperty.h"
|
|
#include "nsIDOMCSSStyleDeclaration.h"
|
|
|
|
#define SPECIFIED_STYLE_TYPE 1
|
|
#define COMPUTED_STYLE_TYPE 2
|
|
|
|
class nsHTMLEditor;
|
|
|
|
typedef void (*nsProcessValueFunc)(const nsAString * aInputString, nsAString & aOutputString,
|
|
const char * aDefaultValueString,
|
|
const char * aPrependString, const char* aAppendString);
|
|
|
|
class nsHTMLCSSUtils
|
|
{
|
|
public:
|
|
nsHTMLCSSUtils();
|
|
~nsHTMLCSSUtils();
|
|
|
|
enum nsCSSEditableProperty {
|
|
eCSSEditableProperty_NONE=0,
|
|
eCSSEditableProperty_background_color,
|
|
eCSSEditableProperty_background_image,
|
|
eCSSEditableProperty_border,
|
|
eCSSEditableProperty_caption_side,
|
|
eCSSEditableProperty_color,
|
|
eCSSEditableProperty_float,
|
|
eCSSEditableProperty_font_family,
|
|
eCSSEditableProperty_font_size,
|
|
eCSSEditableProperty_font_style,
|
|
eCSSEditableProperty_font_weight,
|
|
eCSSEditableProperty_height,
|
|
eCSSEditableProperty_list_style_type,
|
|
eCSSEditableProperty_margin_left,
|
|
eCSSEditableProperty_margin_right,
|
|
eCSSEditableProperty_text_align,
|
|
eCSSEditableProperty_text_decoration,
|
|
eCSSEditableProperty_vertical_align,
|
|
eCSSEditableProperty_whitespace,
|
|
eCSSEditableProperty_width
|
|
};
|
|
|
|
|
|
struct CSSEquivTable {
|
|
nsCSSEditableProperty cssProperty;
|
|
nsProcessValueFunc processValueFunctor;
|
|
const char * defaultValue;
|
|
const char * prependValue;
|
|
const char * appendValue;
|
|
PRBool gettable;
|
|
PRBool caseSensitiveValue;
|
|
};
|
|
|
|
public:
|
|
nsresult Init(nsHTMLEditor * aEditor);
|
|
|
|
/** answers true if the given combination element_name/attribute_name
|
|
* has a CSS equivalence in this implementation
|
|
*
|
|
* @return a boolean saying if the tag/attribute has a css equiv
|
|
* @param aNode [IN] a DOM node
|
|
* @param aProperty [IN] an atom containing a HTML tag name
|
|
* @param aAttribute [IN] a string containing the name of a HTML attribute carried by the element above
|
|
*/
|
|
PRBool IsCSSEditableProperty(nsIDOMNode * aNode, nsIAtom * aProperty, const nsAString * aAttribute);
|
|
|
|
/** adds/remove a CSS declaration to the STYLE atrribute carried by a given element
|
|
*
|
|
* @param aElement [IN] a DOM element
|
|
* @param aProperty [IN] an atom containing the CSS property to set
|
|
* @param aValue [IN] a string containing the value of the CSS property
|
|
* @param aSuppressTransaction [IN] a boolean indicating, when true,
|
|
* that no transaction should be recorded
|
|
*/
|
|
nsresult SetCSSProperty(nsIDOMElement * aElement, nsIAtom * aProperty,
|
|
const nsAString & aValue,
|
|
PRBool aSuppressTransaction);
|
|
nsresult SetCSSPropertyPixels(nsIDOMElement *aElement, nsIAtom *aProperty,
|
|
PRInt32 aIntValue, PRBool aSuppressTxn);
|
|
nsresult RemoveCSSProperty(nsIDOMElement * aElement, nsIAtom * aProperty,
|
|
const nsAString & aPropertyValue, PRBool aSuppressTransaction);
|
|
|
|
/** directly adds/remove a CSS declaration to the STYLE atrribute carried by
|
|
* a given element without going through the txn manager
|
|
*
|
|
* @param aElement [IN] a DOM element
|
|
* @param aProperty [IN] a string containing the CSS property to set/remove
|
|
* @param aValue [IN] a string containing the new value of the CSS property
|
|
*/
|
|
nsresult SetCSSProperty(nsIDOMElement * aElement,
|
|
const nsAString & aProperty,
|
|
const nsAString & aValue);
|
|
nsresult SetCSSPropertyPixels(nsIDOMElement * aElement,
|
|
const nsAString & aProperty,
|
|
PRInt32 aIntValue);
|
|
nsresult RemoveCSSProperty(nsIDOMElement * aElement,
|
|
const nsAString & aProperty);
|
|
|
|
/** gets the specified/computed style value of a CSS property for a given node (or its element
|
|
* ancestor if it is not an element)
|
|
*
|
|
* @param aNode [IN] a DOM node
|
|
* @param aProperty [IN] an atom containing the CSS property to get
|
|
* @param aPropertyValue [OUT] the retrieved value of the property
|
|
*/
|
|
nsresult GetSpecifiedProperty(nsIDOMNode *aNode, nsIAtom *aProperty,
|
|
nsAString & aValue);
|
|
nsresult GetComputedProperty(nsIDOMNode *aNode, nsIAtom *aProperty,
|
|
nsAString & aValue);
|
|
|
|
/** Removes a CSS property from the specified declarations in STYLE attribute
|
|
** and removes the node if it is an useless span
|
|
*
|
|
* @param aNode [IN] the specific node we want to remove a style from
|
|
* @param aProperty [IN] the CSS property atom to remove
|
|
* @param aPropertyValue [IN] the value of the property we have to rremove if the property
|
|
* accepts more than one value
|
|
*/
|
|
nsresult RemoveCSSInlineStyle(nsIDOMNode * aNode, nsIAtom * aProperty, const nsAString & aPropertyValue);
|
|
|
|
/** Answers true is the property can be removed by setting a "none" CSS value
|
|
* on a node
|
|
*
|
|
* @return a boolean saying if the property can be remove by setting a "none" value
|
|
* @param aProperty [IN] an atom containing a CSS property
|
|
* @param aAttribute [IN] pointer to an attribute name or null if this information is irrelevant
|
|
*/
|
|
PRBool IsCSSInvertable(nsIAtom * aProperty, const nsAString * aAttribute);
|
|
|
|
/** Get the default browser background color if we need it for GetCSSBackgroundColorState
|
|
*
|
|
* @param aColor [OUT] the default color as it is defined in prefs
|
|
*/
|
|
nsresult GetDefaultBackgroundColor(nsAString & aColor);
|
|
|
|
/** Get the default length unit used for CSS Indent/Outdent
|
|
*
|
|
* @param aLengthUnit [OUT] the default length unit as it is defined in prefs
|
|
*/
|
|
nsresult GetDefaultLengthUnit(nsAString & aLengthUnit);
|
|
|
|
/** asnwers true if the element aElement carries an ID or a class
|
|
*
|
|
* @param aElement [IN] a DOM element
|
|
* @param aReturn [OUT] the boolean answer
|
|
*/
|
|
nsresult HasClassOrID(nsIDOMElement * aElement, PRBool & aReturn);
|
|
|
|
/** returns the list of values for the CSS equivalences to
|
|
* the passed HTML style for the passed node
|
|
*
|
|
* @param aNode [IN] a DOM node
|
|
* @param aHTMLProperty [IN] an atom containing an HTML property
|
|
* @param aAttribute [IN] a pointer to an attribute name or nsnull if irrelevant
|
|
* @param aValueString [OUT] the list of css values
|
|
* @param aStyleType [IN] SPECIFIED_STYLE_TYPE to query the specified style values
|
|
COMPUTED_STYLE_TYPE to query the computed style values
|
|
*/
|
|
nsresult GetCSSEquivalentToHTMLInlineStyleSet(nsIDOMNode * aNode,
|
|
nsIAtom * aHTMLProperty,
|
|
const nsAString * aAttribute,
|
|
nsAString & aValueString,
|
|
PRUint8 aStyleType);
|
|
|
|
/** Does the node aNode (or his parent if it is not an element node) carries
|
|
* the CSS equivalent styles to the HTML style for this node ?
|
|
*
|
|
* @param aNode [IN] a DOM node
|
|
* @param aHTMLProperty [IN] an atom containing an HTML property
|
|
* @param aAttribute [IN] a pointer to an attribute name or nsnull if irrelevant
|
|
* @param aIsSet [OUT] a boolean being true if the css properties are set
|
|
* @param aValueString [IN/OUT] the attribute value (in) the list of css values (out)
|
|
* @param aStyleType [IN] SPECIFIED_STYLE_TYPE to query the specified style values
|
|
COMPUTED_STYLE_TYPE to query the computed style values
|
|
*/
|
|
nsresult IsCSSEquivalentToHTMLInlineStyleSet(nsIDOMNode * aNode,
|
|
nsIAtom * aHTMLProperty,
|
|
const nsAString * aAttribute,
|
|
PRBool & aIsSet,
|
|
nsAString & aValueString,
|
|
PRUint8 aStyleType);
|
|
|
|
/** Adds to the node the CSS inline styles equivalent to the HTML style
|
|
* and return the number of CSS properties set by the call
|
|
*
|
|
* @param aNode [IN] a DOM node
|
|
* @param aHTMLProperty [IN] an atom containing an HTML property
|
|
* @param aAttribute [IN] a pointer to an attribute name or nsnull if irrelevant
|
|
* @param aValue [IN] the attribute value
|
|
* @param aCount [OUT] the number of CSS properties set by the call
|
|
* @param aSuppressTransaction [IN] a boolean indicating, when true,
|
|
* that no transaction should be recorded
|
|
*/
|
|
nsresult SetCSSEquivalentToHTMLStyle(nsIDOMNode * aNode,
|
|
nsIAtom * aHTMLProperty,
|
|
const nsAString * aAttribute,
|
|
const nsAString * aValue,
|
|
PRInt32 * aCount,
|
|
PRBool aSuppressTransaction);
|
|
|
|
/** removes from the node the CSS inline styles equivalent to the HTML style
|
|
*
|
|
* @param aNode [IN] a DOM node
|
|
* @param aHTMLProperty [IN] an atom containing an HTML property
|
|
* @param aAttribute [IN] a pointer to an attribute name or nsnull if irrelevant
|
|
* @param aValue [IN] the attribute value
|
|
* @param aSuppressTransaction [IN] a boolean indicating, when true,
|
|
* that no transaction should be recorded
|
|
*/
|
|
nsresult RemoveCSSEquivalentToHTMLStyle(nsIDOMNode * aNode,
|
|
nsIAtom *aHTMLProperty,
|
|
const nsAString *aAttribute,
|
|
const nsAString *aValue,
|
|
PRBool aSuppressTransaction);
|
|
|
|
/** parses a "xxxx.xxxxxuuu" string where x is a digit and u an alpha char
|
|
* we need such a parser because nsIDOMCSSStyleDeclaration::GetPropertyCSSValue() is not
|
|
* implemented
|
|
*
|
|
* @param aString [IN] input string to parse
|
|
* @param aValue [OUT] numeric part
|
|
* @param aUnit [OUT] unit part
|
|
*/
|
|
void ParseLength(const nsAString & aString, float * aValue, nsIAtom ** aUnit);
|
|
|
|
/** sets the mIsCSSPrefChecked private member ; used as callback from observer when
|
|
* the css pref state is changed
|
|
*
|
|
* @param aIsCSSPrefChecked [IN] the new boolean state for the pref
|
|
*/
|
|
nsresult SetCSSEnabled(PRBool aIsCSSPrefChecked);
|
|
|
|
/** retrieves the mIsCSSPrefChecked private member, true if the css pref is checked,
|
|
* false if it is not
|
|
*
|
|
* @return the boolean value of the css pref
|
|
*/
|
|
PRBool IsCSSPrefChecked();
|
|
|
|
/** ElementsSameStyle compares two elements and checks if they have the same
|
|
* specified CSS declarations in the STYLE attribute
|
|
* The answer is always false if at least one of them carries an ID or a class
|
|
*
|
|
* @return true if the two elements are considered to have same styles
|
|
* @param aFirstNode [IN] a DOM node
|
|
* @param aSecondNode [IN] a DOM node
|
|
*/
|
|
PRBool ElementsSameStyle(nsIDOMNode *aFirstNode, nsIDOMNode *aSecondNode);
|
|
|
|
/** get the specified inline styles (style attribute) for an element
|
|
*
|
|
* @param aElement [IN] the element node
|
|
* @param aCssDecl [OUT] the CSS declaration corresponding to the style attr
|
|
* @param aLength [OUT] the number of declarations in aCssDecl
|
|
*/
|
|
nsresult GetInlineStyles(nsIDOMElement * aElement, nsIDOMCSSStyleDeclaration ** aCssDecl,
|
|
PRUint32 * aLength);
|
|
|
|
/** 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)
|
|
*/
|
|
nsresult GetElementContainerOrSelf(nsIDOMNode * aNode, nsIDOMElement ** aElement);
|
|
|
|
/** Gets the default DOMView for a given node
|
|
*
|
|
* @param aNode the node we want the default DOMView for
|
|
* @param aViewCSS [OUT] the default DOMViewCSS
|
|
*/
|
|
nsresult GetDefaultViewCSS(nsIDOMNode * aNode, nsIDOMViewCSS ** aViewCSS);
|
|
|
|
|
|
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(nsVoidArray & aPropertyArray,
|
|
nsStringArray & cssValueArray,
|
|
const CSSEquivTable * aEquivTable,
|
|
const nsAString * aValue,
|
|
PRBool 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 nsnull 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(nsIDOMNode * aNode,
|
|
nsIAtom * aHTMLProperty,
|
|
const nsAString *aAttribute,
|
|
const nsAString *aValue,
|
|
nsVoidArray & aPropertyArray,
|
|
nsStringArray & aValueArray,
|
|
PRBool aGetOrRemoveRequest);
|
|
|
|
/** creates a Transaction for setting or removing a css property
|
|
*
|
|
* @param aElement [IN] a DOM element
|
|
* @param aProperty [IN] a CSS property
|
|
* @param aValue [IN] the value to remove for this CSS property or the empty string if irrelevant
|
|
* @param aTxn [OUT] the created transaction
|
|
* @param aRemoveProperty [IN] true if we create a "remove" transaction, false for a "set"
|
|
*/
|
|
nsresult CreateCSSPropertyTxn(nsIDOMElement * aElement,
|
|
nsIAtom * aProperty,
|
|
const nsAString & aValue,
|
|
ChangeCSSInlineStyleTxn ** aTxn,
|
|
PRBool aRemoveProperty);
|
|
|
|
/** 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 aViewCSS [IN] the ViewCSS we need in case we query computed styles
|
|
* @param aStyleType [IN] SPECIFIED_STYLE_TYPE to query the specified style values
|
|
COMPUTED_STYLE_TYPE to query the computed style values
|
|
*/
|
|
nsresult GetCSSInlinePropertyBase(nsIDOMNode * aNode, nsIAtom * aProperty,
|
|
nsAString & aValue,
|
|
nsIDOMViewCSS * aViewCSS,
|
|
PRUint8 aStyleType);
|
|
|
|
|
|
private:
|
|
nsHTMLEditor *mHTMLEditor;
|
|
PRBool mIsCSSPrefChecked;
|
|
|
|
};
|
|
|
|
nsresult NS_NewHTMLCSSUtils(nsHTMLCSSUtils** aInstancePtrResult);
|
|
|
|
#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
|
|
|
|
#endif /* nsHTMLCSSUtils_h__ */
|