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      1 /*
      2  * Copyright (C) 2011 Google 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #if ENABLE(METER_TAG)
     33 #include "MeterShadowElement.h"
     34 
     35 #include "CSSMutableStyleDeclaration.h"
     36 #include "CSSPropertyNames.h"
     37 #include "HTMLMeterElement.h"
     38 #include "HTMLNames.h"
     39 #include "RenderMeter.h"
     40 #include "RenderTheme.h"
     41 
     42 namespace WebCore {
     43 
     44 using namespace HTMLNames;
     45 
     46 MeterShadowElement::MeterShadowElement(Document* document)
     47     : HTMLDivElement(HTMLNames::divTag, document)
     48 {
     49 }
     50 
     51 HTMLMeterElement* MeterShadowElement::meterElement() const
     52 {
     53     Node* node = const_cast<MeterShadowElement*>(this)->shadowAncestorNode();
     54     ASSERT(!node || meterTag == toElement(node)->tagQName());
     55     return static_cast<HTMLMeterElement*>(node);
     56 }
     57 
     58 bool MeterShadowElement::rendererIsNeeded(RenderStyle* style)
     59 {
     60     RenderMeter* meterRenderer = toRenderMeter(meterElement()->renderer());
     61     return meterRenderer && !meterRenderer->theme()->supportsMeter(meterRenderer->style()->appearance()) && HTMLDivElement::rendererIsNeeded(style);
     62 }
     63 
     64 const AtomicString& MeterBarElement::shadowPseudoId() const
     65 {
     66     DEFINE_STATIC_LOCAL(AtomicString, pseudId, ("-webkit-meter-bar"));
     67     return pseudId;
     68 }
     69 
     70 
     71 const AtomicString& MeterValueElement::shadowPseudoId() const
     72 {
     73     DEFINE_STATIC_LOCAL(AtomicString, optimumPseudId, ("-webkit-meter-optimum-value"));
     74     DEFINE_STATIC_LOCAL(AtomicString, suboptimumPseudId, ("-webkit-meter-suboptimum-value"));
     75     DEFINE_STATIC_LOCAL(AtomicString, evenLessGoodPseudId, ("-webkit-meter-even-less-good-value"));
     76 
     77     HTMLMeterElement* meter = meterElement();
     78     if (!meter)
     79         return optimumPseudId;
     80 
     81     switch (meter->gaugeRegion()) {
     82     case HTMLMeterElement::GaugeRegionOptimum:
     83         return optimumPseudId;
     84     case HTMLMeterElement::GaugeRegionSuboptimal:
     85         return suboptimumPseudId;
     86     case HTMLMeterElement::GaugeRegionEvenLessGood:
     87         return evenLessGoodPseudId;
     88     default:
     89         ASSERT_NOT_REACHED();
     90         return optimumPseudId;
     91     }
     92 }
     93 
     94 void MeterValueElement::setWidthPercentage(double width)
     95 {
     96     getInlineStyleDecl()->setProperty(CSSPropertyWidth, width, CSSPrimitiveValue::CSS_PERCENTAGE);
     97 }
     98 
     99 
    100 }
    101 
    102 #endif
    103 
    104