1 /*

     2  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  * 1. Redistributions of source code must retain the above copyright

     8  *    notice, this list of conditions and the following disclaimer.

     9  * 2. Redistributions in binary form must reproduce the above copyright

    10  *    notice, this list of conditions and the following disclaimer in the

    11  *    documentation and/or other materials provided with the distribution.

    12  *

    13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

    14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

    17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

    21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

    24  */

    25 

    26 #include "config.h"

    27 #include "WebKitCSSKeyframeRule.h"

    28 

    29 #include "CSSMutableStyleDeclaration.h"

    30 

    31 namespace WebCore {

    32 

    33 WebKitCSSKeyframeRule::WebKitCSSKeyframeRule(CSSStyleSheet* parent)

    34     : CSSRule(parent)

    35 {

    36 }

    37 

    38 WebKitCSSKeyframeRule::~WebKitCSSKeyframeRule()

    39 {

    40     if (m_style)

    41         m_style->setParent(0);

    42 }

    43 

    44 String WebKitCSSKeyframeRule::cssText() const

    45 {

    46     String result = m_key;

    47 

    48     result += " { ";

    49     result += m_style->cssText();

    50     result += "}";

    51 

    52     return result;

    53 }

    54 

    55 bool WebKitCSSKeyframeRule::parseString(const String& /*string*/, bool /*strict*/)

    56 {

    57     // FIXME

    58     return false;

    59 }

    60 

    61 void WebKitCSSKeyframeRule::setDeclaration(PassRefPtr<CSSMutableStyleDeclaration> style)

    62 {

    63     m_style = style;

    64     m_style->setParent(parent());

    65 }

    66 

    67 /* static */

    68 void WebKitCSSKeyframeRule::parseKeyString(const String& s, Vector<float>& keys)

    69 {

    70     keys.clear();

    71     Vector<String> strings;

    72     s.split(',', strings);

    73     

    74     for (size_t i = 0; i < strings.size(); ++i) {

    75         float key = -1;

    76         String cur = strings[i].stripWhiteSpace();

    77     

    78         // For now the syntax MUST be 'xxx%' or 'from' or 'to', where xxx is a legal floating point number

    79         if (cur == "from")

    80             key = 0;

    81         else if (cur == "to")

    82             key = 1;

    83         else if (cur.endsWith("%")) {

    84             float k = cur.substring(0, cur.length() - 1).toFloat();

    85             if (k >= 0 && k <= 100)

    86                 key = k/100;

    87         }

    88         

    89         if (key < 0) {

    90             keys.clear();

    91             return;

    92         }

    93         else

    94             keys.append(key);

    95     }

    96 }

    97 

    98 } // namespace WebCore