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      1 /*
      2  * Copyright (C) 2006, 2011, 2012 Apple Computer, Inc.
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  *
     19  */
     20 
     21 #include "config.h"
     22 #include "core/html/HTMLOptionsCollection.h"
     23 
     24 #include "bindings/v8/ExceptionState.h"
     25 #include "core/dom/ExceptionCode.h"
     26 #include "core/dom/NamedNodesCollection.h"
     27 #include "core/html/HTMLOptionElement.h"
     28 #include "core/html/HTMLSelectElement.h"
     29 
     30 namespace WebCore {
     31 
     32 HTMLOptionsCollection::HTMLOptionsCollection(Node* select)
     33     : HTMLCollection(select, SelectOptions, DoesNotOverrideItemAfter)
     34 {
     35     ASSERT(select->hasTagName(HTMLNames::selectTag));
     36     ScriptWrappable::init(this);
     37 }
     38 
     39 PassRefPtr<HTMLOptionsCollection> HTMLOptionsCollection::create(Node* select, CollectionType)
     40 {
     41     return adoptRef(new HTMLOptionsCollection(select));
     42 }
     43 
     44 void HTMLOptionsCollection::add(PassRefPtr<HTMLOptionElement> element, ExceptionState& es)
     45 {
     46     add(element, length(), es);
     47 }
     48 
     49 void HTMLOptionsCollection::add(PassRefPtr<HTMLOptionElement> element, int index, ExceptionState& es)
     50 {
     51     HTMLOptionElement* newOption = element.get();
     52 
     53     if (!newOption) {
     54         es.throwDOMException(TypeMismatchError);
     55         return;
     56     }
     57 
     58     if (index < -1) {
     59         es.throwDOMException(IndexSizeError);
     60         return;
     61     }
     62 
     63     HTMLSelectElement* select = toHTMLSelectElement(ownerNode());
     64 
     65     if (index == -1 || unsigned(index) >= length())
     66         select->add(newOption, 0, es);
     67     else
     68         select->add(newOption, toHTMLOptionElement(item(index)), es);
     69 
     70     ASSERT(!es.hadException());
     71 }
     72 
     73 void HTMLOptionsCollection::remove(int index)
     74 {
     75     toHTMLSelectElement(ownerNode())->remove(index);
     76 }
     77 
     78 int HTMLOptionsCollection::selectedIndex() const
     79 {
     80     return toHTMLSelectElement(ownerNode())->selectedIndex();
     81 }
     82 
     83 void HTMLOptionsCollection::setSelectedIndex(int index)
     84 {
     85     toHTMLSelectElement(ownerNode())->setSelectedIndex(index);
     86 }
     87 
     88 void HTMLOptionsCollection::setLength(unsigned length, ExceptionState& es)
     89 {
     90     toHTMLSelectElement(ownerNode())->setLength(length, es);
     91 }
     92 
     93 void HTMLOptionsCollection::anonymousNamedGetter(const AtomicString& name, bool& returnValue0Enabled, RefPtr<NodeList>& returnValue0, bool& returnValue1Enabled, RefPtr<Node>& returnValue1)
     94 {
     95     Vector<RefPtr<Node> > namedItems;
     96     this->namedItems(name, namedItems);
     97 
     98     if (!namedItems.size())
     99         return;
    100 
    101     if (namedItems.size() == 1) {
    102         returnValue1Enabled = true;
    103         returnValue1 = namedItems.at(0);
    104         return;
    105     }
    106 
    107     returnValue0Enabled = true;
    108     returnValue0 = NamedNodesCollection::create(namedItems);
    109 }
    110 
    111 bool HTMLOptionsCollection::anonymousIndexedSetterRemove(unsigned index, ExceptionState& es)
    112 {
    113     HTMLSelectElement* base = toHTMLSelectElement(ownerNode());
    114     base->remove(index);
    115     return true;
    116 }
    117 
    118 bool HTMLOptionsCollection::anonymousIndexedSetter(unsigned index, PassRefPtr<HTMLOptionElement> value, ExceptionState& es)
    119 {
    120     HTMLSelectElement* base = toHTMLSelectElement(ownerNode());
    121     if (!value) {
    122         es.throwDOMException(TypeMismatchError);
    123         return true;
    124     }
    125     base->setOption(index, value.get(), es);
    126     return true;
    127 }
    128 
    129 } //namespace
    130 
    131