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 #include "config.h" 21 #include "qwebinspector.h" 22 23 #include "Element.h" 24 #include "InspectorController.h" 25 #include "qwebelement.h" 26 #include "qwebinspector_p.h" 27 #include "qwebpage_p.h" 28 29 #include <QResizeEvent> 30 31 /*! 32 \class QWebInspector 33 \since 4.6 34 \brief The QWebInspector class allows the placement and control of a 35 QWebPage's inspector. 36 The inspector allows you to see a page current hierarchy and loading 37 statistics. 38 39 The QWebPage to be inspected is determined with the setPage() method. 40 41 A typical use of QWebInspector follows: 42 43 \snippet webkitsnippets/qtwebkit_qwebinspector_snippet.cpp 0 44 45 \note A QWebInspector will display a blank widget if either: 46 \list 47 \o page() is null 48 \o QWebSettings::DeveloperExtrasEnabled is false 49 \endlist 50 51 \section1 Resources 52 53 This class acts mostly as a container and a controller for the inspector. 54 Most of the resources needed by the inspector are owned by the associated 55 QWebPage and are allocated the first time that: 56 \list 57 \o an element is inspected 58 \o the QWebInspector is shown. 59 \endlist 60 61 \section1 Inspector configuration persistence 62 63 The inspector allows the user to configure some options through its 64 interface (e.g. the resource tracking "Always enable" option). 65 These settings are persisted automatically by QtWebKit using QSettings. 66 67 However since the QSettings object is instantiated using the empty 68 constructor, QCoreApplication::setOrganizationName() and 69 QCoreApplication::setApplicationName() must be called within your 70 application to enable the persistence of these options. 71 */ 72 73 /*! 74 Constructs an empty QWebInspector with parent \a parent. 75 */ 76 QWebInspector::QWebInspector(QWidget* parent) 77 : QWidget(parent) 78 , d(new QWebInspectorPrivate(this)) 79 { 80 } 81 82 /*! 83 Destroys the inspector. 84 */ 85 QWebInspector::~QWebInspector() 86 { 87 // Remove association principally to prevent deleting a child frontend 88 setPage(0); 89 } 90 91 /*! 92 Sets the QWebPage to be inspected. 93 94 There can only be one QWebInspector associated with a QWebPage 95 and vices versa. 96 97 Calling with \a page as null will break the current association, if any. 98 99 If \a page is already associated to another QWebInspector, the association 100 will be replaced and the previous QWebInspector will have no page 101 associated. 102 103 \sa page() 104 */ 105 void QWebInspector::setPage(QWebPage* page) 106 { 107 if (d->page) { 108 // Break currentPage-->this 109 d->page->d->setInspector(0); 110 } 111 if (page && page->d->inspector && page->d->inspector != this) { 112 // Break newPage<->newPageCurrentInspector 113 page->d->inspector->setPage(0); 114 } 115 116 d->page = page; 117 118 if (page) { 119 // Setup the reciprocal association 120 page->d->setInspector(this); 121 } 122 } 123 124 /*! 125 Returns the inspected QWebPage. 126 If no web page is currently associated, a null pointer is returned. 127 */ 128 QWebPage* QWebInspector::page() const 129 { 130 return d->page; 131 } 132 133 /*! \reimp */ 134 QSize QWebInspector::sizeHint() const 135 { 136 return QSize(450, 300); 137 } 138 139 /*! \reimp */ 140 bool QWebInspector::event(QEvent* ev) 141 { 142 return QWidget::event(ev); 143 } 144 145 /*! \reimp */ 146 void QWebInspector::resizeEvent(QResizeEvent* event) 147 { 148 d->adjustFrontendSize(event->size()); 149 } 150 151 /*! \reimp */ 152 void QWebInspector::showEvent(QShowEvent* event) 153 { 154 #if ENABLE(INSPECTOR) 155 // Allows QWebInspector::show() to init the inspector. 156 if (d->page) 157 d->page->d->inspectorController()->show(); 158 #endif 159 } 160 161 /*! \reimp */ 162 void QWebInspector::hideEvent(QHideEvent* event) 163 { 164 } 165 166 /*! \reimp */ 167 void QWebInspector::closeEvent(QCloseEvent* event) 168 { 169 #if ENABLE(INSPECTOR) 170 if (d->page) 171 d->page->d->inspectorController()->setWindowVisible(false); 172 #endif 173 } 174 175 /*! \internal */ 176 void QWebInspectorPrivate::setFrontend(QWidget* newFrontend) 177 { 178 if (frontend) 179 frontend->setParent(0); 180 181 frontend = newFrontend; 182 183 if (frontend) { 184 frontend->setParent(q); 185 frontend->show(); 186 adjustFrontendSize(q->size()); 187 } 188 } 189 190 void QWebInspectorPrivate::adjustFrontendSize(const QSize& size) 191 { 192 if (frontend) 193 frontend->resize(size); 194 } 195 196