WebCore/css/MediaQuery.cpp

   1 /*
   2  * CSS Media Query
   3  *
   4  * Copyright (C) 2005, 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
  16  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  18  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  22  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  23  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  25  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include "config.h"
  29 #include "MediaQuery.h"
  30
  31 #include "MediaQueryExp.h"
  32
  33 namespace WebCore {
  34
  35 MediaQuery::MediaQuery(Restrictor r, const String& mediaType, Vector<MediaQueryExp*>* exprs)
  36     : m_restrictor(r)
  37     , m_mediaType(mediaType)
  38     , m_expressions(exprs)
  39 {
  40     if (!m_expressions)
  41         m_expressions = new Vector<MediaQueryExp*>;
  42 }
  43
  44 MediaQuery::~MediaQuery()
  45 {
  46     if (m_expressions) {
  47         deleteAllValues(*m_expressions);
  48         delete m_expressions;
  49     }
  50 }
  51
  52 bool MediaQuery::operator==(const MediaQuery& other) const
  53 {
  54     if (m_restrictor != other.m_restrictor
  55         || m_mediaType != other.m_mediaType
  56         || m_expressions->size() != other.m_expressions->size())
  57         return false;
  58
  59     for (size_t i = 0; i < m_expressions->size(); ++i) {
  60         MediaQueryExp* exp = m_expressions->at(i);
  61         MediaQueryExp* oexp = other.m_expressions->at(i);
  62         if (!(*exp == *oexp))
  63             return false;
  64     }
  65
  66     return true;
  67 }
  68
  69 String MediaQuery::cssText() const
  70 {
  71     String text;
  72     switch (m_restrictor) {
  73         case MediaQuery::Only:
  74             text += "only ";
  75             break;
  76         case MediaQuery::Not:
  77             text += "not ";
  78             break;
  79         case MediaQuery::None:
  80         default:
  81             break;
  82     }
  83     text += m_mediaType;
  84     for (size_t i = 0; i < m_expressions->size(); ++i) {
  85         MediaQueryExp* exp = m_expressions->at(i);
  86         text += " and (";
  87         text += exp->mediaFeature();
  88         if (exp->value()) {
  89             text += ": ";
  90             text += exp->value()->cssText();
  91         }
  92         text += ")";
  93     }
  94     return text;
  95 }
  96
  97 } //namespace