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      1 /*
      2     Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
      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 #ifndef QWEBELEMENT_H
     21 #define QWEBELEMENT_H
     22 
     23 #include <QtCore/qstring.h>
     24 #include <QtCore/qstringlist.h>
     25 #include <QtCore/qrect.h>
     26 #include <QtCore/qvariant.h>
     27 #include <QtCore/qshareddata.h>
     28 
     29 #include "qwebkitglobal.h"
     30 namespace WebCore {
     31     class Element;
     32     class Node;
     33 }
     34 
     35 
     36 #if defined(WTF_USE_V8) && WTF_USE_V8
     37 namespace V8 {
     38     namespace Bindings {
     39     class QtWebElementRuntime;
     40     }
     41 }
     42 #else
     43 namespace JSC {
     44     namespace Bindings {
     45     class QtWebElementRuntime;
     46     }
     47 }
     48 #endif
     49 
     50 QT_BEGIN_NAMESPACE
     51 class QPainter;
     52 QT_END_NAMESPACE
     53 
     54 class QWebFrame;
     55 class QWebElementCollection;
     56 class QWebElementPrivate;
     57 
     58 class QWEBKIT_EXPORT QWebElement {
     59 public:
     60     QWebElement();
     61     QWebElement(const QWebElement&);
     62     QWebElement &operator=(const QWebElement&);
     63     ~QWebElement();
     64 
     65     bool operator==(const QWebElement& o) const;
     66     bool operator!=(const QWebElement& o) const;
     67 
     68     bool isNull() const;
     69 
     70     QWebElementCollection findAll(const QString &selectorQuery) const;
     71     QWebElement findFirst(const QString &selectorQuery) const;
     72 
     73     void setPlainText(const QString& text);
     74     QString toPlainText() const;
     75 
     76     void setOuterXml(const QString& markup);
     77     QString toOuterXml() const;
     78 
     79     void setInnerXml(const QString& markup);
     80     QString toInnerXml() const;
     81 
     82     void setAttribute(const QString& name, const QString& value);
     83     void setAttributeNS(const QString& namespaceUri, const QString& name, const QString& value);
     84     QString attribute(const QString& name, const QString& defaultValue = QString()) const;
     85     QString attributeNS(const QString& namespaceUri, const QString& name, const QString& defaultValue = QString()) const;
     86     bool hasAttribute(const QString& name) const;
     87     bool hasAttributeNS(const QString& namespaceUri, const QString& name) const;
     88     void removeAttribute(const QString& name);
     89     void removeAttributeNS(const QString& namespaceUri, const QString& name);
     90     bool hasAttributes() const;
     91     QStringList attributeNames(const QString& namespaceUri = QString()) const;
     92 
     93     QStringList classes() const;
     94     bool hasClass(const QString& name) const;
     95     void addClass(const QString& name);
     96     void removeClass(const QString& name);
     97     void toggleClass(const QString& name);
     98 
     99     bool hasFocus() const;
    100     void setFocus();
    101 
    102     QRect geometry() const;
    103 
    104     QString tagName() const;
    105     QString prefix() const;
    106     QString localName() const;
    107     QString namespaceUri() const;
    108 
    109     QWebElement parent() const;
    110     QWebElement firstChild() const;
    111     QWebElement lastChild() const;
    112     QWebElement nextSibling() const;
    113     QWebElement previousSibling() const;
    114     QWebElement document() const;
    115     QWebFrame *webFrame() const;
    116 
    117     // TODO: Add QWebElementCollection overloads
    118     // docs need example snippet
    119     void appendInside(const QString& markup);
    120     void appendInside(const QWebElement& element);
    121 
    122     // docs need example snippet
    123     void prependInside(const QString& markup);
    124     void prependInside(const QWebElement& element);
    125 
    126     // docs need example snippet
    127     void appendOutside(const QString& markup);
    128     void appendOutside(const QWebElement& element);
    129 
    130     // docs need example snippet
    131     void prependOutside(const QString& markup);
    132     void prependOutside(const QWebElement& element);
    133 
    134     // docs need example snippet
    135     void encloseContentsWith(const QWebElement& element);
    136     void encloseContentsWith(const QString& markup);
    137     void encloseWith(const QString& markup);
    138     void encloseWith(const QWebElement& element);
    139 
    140     void replace(const QString& markup);
    141     void replace(const QWebElement& element);
    142 
    143     QWebElement clone() const;
    144     QWebElement& takeFromDocument();
    145     void removeFromDocument();
    146     void removeAllChildren();
    147 
    148     QVariant evaluateJavaScript(const QString& scriptSource);
    149 
    150     enum StyleResolveStrategy {
    151          InlineStyle,
    152          CascadedStyle,
    153          ComputedStyle,
    154     };
    155     QString styleProperty(const QString& name, StyleResolveStrategy strategy) const;
    156     void setStyleProperty(const QString& name, const QString& value);
    157 
    158     void render(QPainter* painter);
    159     void render(QPainter* painter, const QRect& clipRect);
    160 
    161 private:
    162     explicit QWebElement(WebCore::Element*);
    163     explicit QWebElement(WebCore::Node*);
    164 
    165     static QWebElement enclosingElement(WebCore::Node*);
    166 
    167     friend class DumpRenderTreeSupportQt;
    168     friend class QWebFrame;
    169     friend class QWebElementCollection;
    170     friend class QWebHitTestResult;
    171     friend class QWebHitTestResultPrivate;
    172     friend class QWebPage;
    173 
    174 #if defined(WTF_USE_V8) && WTF_USE_V8
    175     friend class V8::Bindings::QtWebElementRuntime;
    176 #else
    177     friend class JSC::Bindings::QtWebElementRuntime;
    178 #endif
    179 
    180     QWebElementPrivate* d;
    181     WebCore::Element* m_element;
    182 };
    183 
    184 class QWebElementCollectionPrivate;
    185 
    186 class QWEBKIT_EXPORT QWebElementCollection
    187 {
    188 public:
    189     QWebElementCollection();
    190     QWebElementCollection(const QWebElement &contextElement, const QString &query);
    191     QWebElementCollection(const QWebElementCollection &);
    192     QWebElementCollection &operator=(const QWebElementCollection &);
    193     ~QWebElementCollection();
    194 
    195     QWebElementCollection operator+(const QWebElementCollection &other) const;
    196     inline QWebElementCollection &operator+=(const QWebElementCollection &other)
    197     {
    198         append(other); return *this;
    199     }
    200 
    201     void append(const QWebElementCollection &collection);
    202 
    203     int count() const;
    204     QWebElement at(int i) const;
    205     inline QWebElement operator[](int i) const { return at(i); }
    206 
    207     inline QWebElement first() const { return at(0); }
    208     inline QWebElement last() const { return at(count() - 1); }
    209 
    210     QList<QWebElement> toList() const;
    211 
    212     class const_iterator {
    213        public:
    214            inline const_iterator(const QWebElementCollection* collection, int index) : i(index), collection(collection) {}
    215            inline const_iterator(const const_iterator& o) : i(o.i), collection(o.collection) {}
    216 
    217            inline const QWebElement operator*() const { return collection->at(i); }
    218 
    219            inline bool operator==(const const_iterator& o) const { return i == o.i && collection == o.collection; }
    220            inline bool operator!=(const const_iterator& o) const { return i != o.i || collection != o.collection; }
    221            inline bool operator<(const const_iterator& o) const { return i < o.i; }
    222            inline bool operator<=(const const_iterator& o) const { return i <= o.i; }
    223            inline bool operator>(const const_iterator& o) const { return i > o.i; }
    224            inline bool operator>=(const const_iterator& o) const { return i >= o.i; }
    225 
    226            inline const_iterator& operator++() { ++i; return *this; }
    227            inline const_iterator operator++(int) { const_iterator n(collection, i); ++i; return n; }
    228            inline const_iterator& operator--() { i--; return *this; }
    229            inline const_iterator operator--(int) { const_iterator n(collection, i); i--; return n; }
    230            inline const_iterator& operator+=(int j) { i += j; return *this; }
    231            inline const_iterator& operator-=(int j) { i -= j; return *this; }
    232            inline const_iterator operator+(int j) const { return const_iterator(collection, i + j); }
    233            inline const_iterator operator-(int j) const { return const_iterator(collection, i - j); }
    234            inline int operator-(const_iterator j) const { return i - j.i; }
    235        private:
    236             int i;
    237             const QWebElementCollection* const collection;
    238     };
    239     friend class const_iterator;
    240 
    241     inline const_iterator begin() const { return constBegin(); }
    242     inline const_iterator end() const { return constEnd(); }
    243     inline const_iterator constBegin() const { return const_iterator(this, 0); }
    244     inline const_iterator constEnd() const { return const_iterator(this, count()); };
    245 
    246     class iterator {
    247     public:
    248         inline iterator(const QWebElementCollection* collection, int index) : i(index), collection(collection) {}
    249         inline iterator(const iterator& o) : i(o.i), collection(o.collection) {}
    250 
    251         inline QWebElement operator*() const { return collection->at(i); }
    252 
    253         inline bool operator==(const iterator& o) const { return i == o.i && collection == o.collection; }
    254         inline bool operator!=(const iterator& o) const { return i != o.i || collection != o.collection; }
    255         inline bool operator<(const iterator& o) const { return i < o.i; }
    256         inline bool operator<=(const iterator& o) const { return i <= o.i; }
    257         inline bool operator>(const iterator& o) const { return i > o.i; }
    258         inline bool operator>=(const iterator& o) const { return i >= o.i; }
    259 
    260         inline iterator& operator++() { ++i; return *this; }
    261         inline iterator operator++(int) { iterator n(collection, i); ++i; return n; }
    262         inline iterator& operator--() { i--; return *this; }
    263         inline iterator operator--(int) { iterator n(collection, i); i--; return n; }
    264         inline iterator& operator+=(int j) { i += j; return *this; }
    265         inline iterator& operator-=(int j) { i -= j; return *this; }
    266         inline iterator operator+(int j) const { return iterator(collection, i + j); }
    267         inline iterator operator-(int j) const { return iterator(collection, i - j); }
    268         inline int operator-(iterator j) const { return i - j.i; }
    269     private:
    270         int i;
    271         const QWebElementCollection* const collection;
    272     };
    273     friend class iterator;
    274 
    275     inline iterator begin() { return iterator(this, 0); }
    276     inline iterator end()  { return iterator(this, count()); }
    277 private:
    278     QExplicitlySharedDataPointer<QWebElementCollectionPrivate> d;
    279 };
    280 
    281 Q_DECLARE_METATYPE(QWebElement)
    282 
    283 #endif // QWEBELEMENT_H
    284