DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Untracked file

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla 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/MPL/
 *
 * 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 of 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 MPL, 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 MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef ChangeCSSInlineStyleTxn_h__
#define ChangeCSSInlineStyleTxn_h__

#include "EditTxn.h"
#include "nsCOMPtr.h"
#include "nsIDOMElement.h"
#include "nsIEditor.h"

#define CHANGE_CSSINLINESTYLE_TXN_CID \
{/* a2185c9e-1dd1-11b2-88d6-d89704bf7a5a */ \
0xa2185c9e, 0x1dd1, 0x11b2, \
{0x88, 0xd6, 0xd8, 0x97, 0x04, 0xbf, 0x7a, 0x5a} }

/**
 * A transaction that changes the value of a CSS inline style of a content node. 
 * This transaction covers add, remove, and change a property's value.
 */
class ChangeCSSInlineStyleTxn : public EditTxn
{
public:

  static const nsIID& GetCID() { static const nsIID iid = CHANGE_CSSINLINESTYLE_TXN_CID; return iid; }

  /** Initialize the transaction.
    * @param aEditor         [IN] the object providing core editing operations
    * @param aNode           [IN] the node whose style attribute will be changed
    * @param aProperty       [IN] the name of the property to change
    * @param aValue          [IN] the new value for aProperty, if aRemoveProperty is false
    * @param aRemoveProperty [IN] if PR_TRUE, remove aProperty from style attribute
    */
  NS_IMETHOD Init(nsIEditor      * aEditor,
                  nsIDOMElement  * aElement,
                  nsIAtom        * aProperty,
                  const nsAString & aValue,
                  PRBool aRemoveProperty);

  /** returns true if the list of white-space separated values contains aValue
    *
    * @return                true if the value is in the list of values
    * @param aValueList      [IN] a list of white-space separated values
    * @param aValue          [IN] the value to look for in the list
    * @param aCaseSensitive  [IN] a boolean being true if a case-sensitive search is needed
    */
  static PRBool ValueIncludes(const nsAString & aValueList, const nsAString & aValue, PRBool aCaseSensitive);

  /** adds the value aNewValue to the list of white-space separated values aValues
    *
    * @param aValues         [IN/OUT] a list of wite-space separated values
    * @param aNewValue       [IN] a value this code adds to aValues if it is not already in
    */
  NS_IMETHOD AddValueToMultivalueProperty(nsAString & aValues, const nsAString  & aNewValue);

private:
  ChangeCSSInlineStyleTxn();

  /** returns true if the property accepts more than one value
    *
    * @return                true if the property accepts more than one value
    * @param aCSSProperty    [IN] the CSS property
    */
  PRBool AcceptsMoreThanOneValue(nsIAtom * aCSSProperty);

  /** remove a value from a list of white-space separated values
    * @param aValues         [IN] a list of white-space separated values
    * @param aRemoveValue    [IN] the value to remove from the list
    */
  void   RemoveValueFromListOfValues(nsAString & aValues, const nsAString  & aRemoveValue);

  /** If the boolean is true and if the value is not the empty string,
    * set the property in the transaction to that value; if the value
    * is empty, remove the property from element's styles. If the boolean
    * is false, just remove the style attribute.
    */
  nsresult SetStyle(PRBool aAttributeWasSet, nsAString & aValue);

public:
  NS_DECL_EDITTXN

  NS_IMETHOD RedoTransaction();

protected:

  /** the editor that created this transaction */
  nsIEditor *mEditor;
  
  /** the element to operate upon */
  nsCOMPtr<nsIDOMElement> mElement;
  
  /** the CSS property to change */
  nsIAtom *mProperty;

  /** the value to set the property to (ignored if mRemoveProperty==PR_TRUE) */
  nsString mValue;

  /** the value to set the property to for undo */
  nsString mUndoValue;
  /** the value to set the property to for redo */
  nsString mRedoValue;
  /** true if the style attribute was present and not empty before DoTransaction */
  PRBool   mUndoAttributeWasSet;
  /** true if the style attribute is present and not empty after DoTransaction */
  PRBool   mRedoAttributeWasSet;

  /** PR_TRUE if the operation is to remove mProperty from mElement */
  PRBool   mRemoveProperty;

  friend class TransactionFactory;
};

#endif