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 

    28 #include "CSSParser.h"

    29 #include "WebKitCSSKeyframesRule.h"

    30 #include "WebKitCSSKeyframeRule.h"

    31 #include "CSSRuleList.h"

    32 #include "StyleSheet.h"

    33 

    34 namespace WebCore {

    35 

    36 WebKitCSSKeyframesRule::WebKitCSSKeyframesRule(CSSStyleSheet* parent)

    37     : CSSRule(parent)

    38     , m_lstCSSRules(CSSRuleList::create())

    39 {

    40 }

    41 

    42 WebKitCSSKeyframesRule::~WebKitCSSKeyframesRule()

    43 {

    44     int length = m_lstCSSRules->length();

    45     if (length == 0)

    46         return;

    47         

    48     for (int i = 0; i < length; i++)

    49         m_lstCSSRules->item(i)->setParent(0);

    50 }

    51 

    52 String WebKitCSSKeyframesRule::name() const

    53 {

    54     return m_name;

    55 }

    56 

    57 void WebKitCSSKeyframesRule::setName(const String& name)

    58 {

    59     m_name = name;

    60     

    61     // Since the name is used in the keyframe map list in CSSStyleSelector, we need

    62     // to recompute the style sheet to get the updated name.

    63     stylesheet()->styleSheetChanged();

    64 }

    65 

    66 unsigned WebKitCSSKeyframesRule::length() const

    67 {

    68     return m_lstCSSRules.get()->length();

    69 }

    70 

    71 WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::item(unsigned index)

    72 {

    73     CSSRule* rule = m_lstCSSRules.get()->item(index);

    74     return (rule && rule->isKeyframeRule()) ? static_cast<WebKitCSSKeyframeRule*>(rule) : 0;

    75 }

    76 

    77 const WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::item(unsigned index) const

    78 {

    79     CSSRule* rule = m_lstCSSRules.get()->item(index);

    80     return (rule && rule->isKeyframeRule()) ? static_cast<const WebKitCSSKeyframeRule*>(rule) : 0;

    81 }

    82 

    83 void WebKitCSSKeyframesRule::append(WebKitCSSKeyframeRule* rule)

    84 {

    85     m_lstCSSRules.get()->append(rule);

    86 }

    87 

    88 void WebKitCSSKeyframesRule::insertRule(const String& rule)

    89 {

    90     CSSParser p(useStrictParsing());

    91     RefPtr<CSSRule> newRule = p.parseKeyframeRule(parentStyleSheet(), rule);

    92     if (newRule.get() && newRule.get()->isKeyframeRule())

    93         append(static_cast<WebKitCSSKeyframeRule*>(newRule.get()));

    94 }

    95 

    96 void WebKitCSSKeyframesRule::deleteRule(const String& s)

    97 {

    98     int i = findRuleIndex(s);

    99     if (i >= 0)

   100         m_lstCSSRules.get()->deleteRule(i);

   101 }

   102 

   103 WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::findRule(const String& s)

   104 {

   105     int i = findRuleIndex(s);

   106     return (i >= 0) ? item(i) : 0;

   107 }

   108 

   109 int WebKitCSSKeyframesRule::findRuleIndex(const String& key) const

   110 {

   111     String percentageString;

   112     if (equalIgnoringCase(key, "from"))

   113         percentageString = "0%";

   114     else if (equalIgnoringCase(key, "to"))

   115         percentageString = "100%";

   116     else

   117         percentageString = key;

   118 

   119     for (unsigned i = 0; i < length(); ++i) {

   120         if (item(i)->keyText() == percentageString)

   121             return i;

   122     }

   123 

   124     return -1;

   125 }

   126 

   127 String WebKitCSSKeyframesRule::cssText() const

   128 {

   129     String result = "@-webkit-keyframes ";

   130     result += m_name;

   131     result += " { \n";

   132 

   133     if (m_lstCSSRules) {

   134         unsigned len = m_lstCSSRules->length();

   135         for (unsigned i = 0; i < len; i++) {

   136             result += "  ";

   137             result += m_lstCSSRules->item(i)->cssText();

   138             result += "\n";

   139         }

   140     }

   141 

   142     result += "}";

   143     return result;

   144 }

   145 

   146 } // namespace WebCore