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Diffstat (limited to 'src/plugins/qdeclarativemodules/webkitqmlplugin/qdeclarativewebview.cpp')
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diff --git a/src/plugins/qdeclarativemodules/webkitqmlplugin/qdeclarativewebview.cpp b/src/plugins/qdeclarativemodules/webkitqmlplugin/qdeclarativewebview.cpp new file mode 100644 index 0000000..733ac86 --- /dev/null +++ b/src/plugins/qdeclarativemodules/webkitqmlplugin/qdeclarativewebview.cpp @@ -0,0 +1,1340 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qdeclarativewebview_p.h" +#include "qdeclarativewebview_p_p.h" + +#include <private/qdeclarativepainteditem_p_p.h> + +#include <qdeclarative.h> +#include <qdeclarativeengine.h> +#include <private/qdeclarativestate_p.h> + +#include <QDebug> +#include <QPen> +#include <QFile> +#include <QEvent> +#include <QMouseEvent> +#include <QKeyEvent> +#include <QBasicTimer> +#include <QApplication> +#include <QGraphicsSceneMouseEvent> +#include <QtWebKit/QWebPage> +#include <QtWebKit/QWebFrame> +#include <QtWebKit/QWebElement> +#include <QtWebKit/QWebSettings> +#include <private/qlistmodelinterface_p.h> + +QT_BEGIN_NAMESPACE + +static const int MAX_DOUBLECLICK_TIME=500; // XXX need better gesture system + +class QDeclarativeWebViewPrivate : public QDeclarativePaintedItemPrivate +{ + Q_DECLARE_PUBLIC(QDeclarativeWebView) + +public: + QDeclarativeWebViewPrivate() + : QDeclarativePaintedItemPrivate(), page(0), preferredwidth(0), preferredheight(0), + progress(1.0), status(QDeclarativeWebView::Null), pending(PendingNone), + newWindowComponent(0), newWindowParent(0), + pressTime(400), + rendering(true) + { + } + + QUrl url; // page url might be different if it has not loaded yet + QWebPage *page; + + int preferredwidth, preferredheight; + qreal progress; + QDeclarativeWebView::Status status; + QString statusText; + enum { PendingNone, PendingUrl, PendingHtml, PendingContent } pending; + QUrl pending_url; + QString pending_string; + QByteArray pending_data; + mutable QDeclarativeWebSettings settings; + QDeclarativeComponent *newWindowComponent; + QDeclarativeItem *newWindowParent; + + QBasicTimer pressTimer; + QPoint pressPoint; + int pressTime; // milliseconds before it's a "hold" + + + static void windowObjects_append(QDeclarativeListProperty<QObject> *prop, QObject *o) { + static_cast<QDeclarativeWebViewPrivate *>(prop->data)->windowObjects.append(o); + static_cast<QDeclarativeWebViewPrivate *>(prop->data)->updateWindowObjects(); + } + + void updateWindowObjects(); + QObjectList windowObjects; + + bool rendering; +}; + +/*! + \qmlclass WebView QDeclarativeWebView + \since 4.7 + \brief The WebView item allows you to add web content to a canvas. + \inherits Item + + A WebView renders web content based on a URL. + + If the width and height of the item is not set, they will + dynamically adjust to a size appropriate for the content. + This width may be large for typical online web pages. + + If the preferredWidth is set, the width will be this amount or larger, + usually laying out the web content to fit the preferredWidth. + + \qml + import org.webkit 1.0 + + WebView { + url: "http://www.nokia.com" + width: 490 + height: 400 + scale: 0.5 + smooth: false + smoothCache: true + } + \endqml + + \image webview.png + + The item includes no scrolling, scaling, + toolbars, etc., those must be implemented around WebView. See the WebBrowser example + for a demonstration of this. +*/ + +/*! + \internal + \class QDeclarativeWebView + \brief The QDeclarativeWebView class allows you to add web content to a QDeclarativeView. + + A WebView renders web content base on a URL. + + \image webview.png + + The item includes no scrolling, scaling, + toolbars, etc., those must be implemented around WebView. See the WebBrowser example + for a demonstration of this. + + A QDeclarativeWebView object can be instantiated in Qml using the tag \l WebView. +*/ + +QDeclarativeWebView::QDeclarativeWebView(QDeclarativeItem *parent) + : QDeclarativePaintedItem(*(new QDeclarativeWebViewPrivate), parent) +{ + init(); +} + +QDeclarativeWebView::~QDeclarativeWebView() +{ + Q_D(QDeclarativeWebView); + delete d->page; +} + +void QDeclarativeWebView::init() +{ + Q_D(QDeclarativeWebView); + + QWebSettings::enablePersistentStorage(); + + setAcceptHoverEvents(true); + setAcceptedMouseButtons(Qt::LeftButton); + setFlag(QGraphicsItem::ItemHasNoContents, false); + + d->page = 0; +} + +void QDeclarativeWebView::componentComplete() +{ + QDeclarativePaintedItem::componentComplete(); + Q_D(QDeclarativeWebView); + switch (d->pending) { + case QDeclarativeWebViewPrivate::PendingUrl: + setUrl(d->pending_url); + break; + case QDeclarativeWebViewPrivate::PendingHtml: + setHtml(d->pending_string, d->pending_url); + break; + case QDeclarativeWebViewPrivate::PendingContent: + setContent(d->pending_data, d->pending_string, d->pending_url); + break; + default: + break; + } + d->pending = QDeclarativeWebViewPrivate::PendingNone; + d->updateWindowObjects(); +} + +QDeclarativeWebView::Status QDeclarativeWebView::status() const +{ + Q_D(const QDeclarativeWebView); + return d->status; +} + + +/*! + \qmlproperty real WebView::progress + This property holds the progress of loading the current URL, from 0 to 1. + + If you just want to know when progress gets to 1, use + WebView::onLoadFinished() or WebView::onLoadFailed() instead. +*/ +qreal QDeclarativeWebView::progress() const +{ + Q_D(const QDeclarativeWebView); + return d->progress; +} + +void QDeclarativeWebView::doLoadStarted() +{ + Q_D(QDeclarativeWebView); + + if (!d->url.isEmpty()) { + d->status = Loading; + emit statusChanged(d->status); + } + emit loadStarted(); +} + +void QDeclarativeWebView::doLoadProgress(int p) +{ + Q_D(QDeclarativeWebView); + if (d->progress == p/100.0) + return; + d->progress = p/100.0; + emit progressChanged(); +} + +void QDeclarativeWebView::pageUrlChanged() +{ + Q_D(QDeclarativeWebView); + + page()->setViewportSize(QSize( + d->preferredwidth>0 ? d->preferredwidth : width(), + d->preferredheight>0 ? d->preferredheight : height())); + expandToWebPage(); + + if ((d->url.isEmpty() && page()->mainFrame()->url() != QUrl(QLatin1String("about:blank"))) + || (d->url != page()->mainFrame()->url() && !page()->mainFrame()->url().isEmpty())) + { + d->url = page()->mainFrame()->url(); + if (d->url == QUrl(QLatin1String("about:blank"))) + d->url = QUrl(); + emit urlChanged(); + } +} + +void QDeclarativeWebView::doLoadFinished(bool ok) +{ + Q_D(QDeclarativeWebView); + + if (title().isEmpty()) + pageUrlChanged(); // XXX bug 232556 - pages with no title never get urlChanged() + + if (ok) { + d->status = d->url.isEmpty() ? Null : Ready; + emit loadFinished(); + } else { + d->status = Error; + emit loadFailed(); + } + emit statusChanged(d->status); +} + +/*! + \qmlproperty url WebView::url + This property holds the URL to the page displayed in this item. It can be set, + but also can change spontaneously (eg. because of network redirection). + + If the url is empty, the page is blank. + + The url is always absolute (QML will resolve relative URL strings in the context + of the containing QML document). +*/ +QUrl QDeclarativeWebView::url() const +{ + Q_D(const QDeclarativeWebView); + return d->url; +} + +void QDeclarativeWebView::setUrl(const QUrl &url) +{ + Q_D(QDeclarativeWebView); + if (url == d->url) + return; + + if (isComponentComplete()) { + d->url = url; + page()->setViewportSize(QSize( + d->preferredwidth>0 ? d->preferredwidth : width(), + d->preferredheight>0 ? d->preferredheight : height())); + QUrl seturl = url; + if (seturl.isEmpty()) + seturl = QUrl(QLatin1String("about:blank")); + + Q_ASSERT(!seturl.isRelative()); + + page()->mainFrame()->load(seturl); + + emit urlChanged(); + } else { + d->pending = d->PendingUrl; + d->pending_url = url; + } +} + +/*! + \qmlproperty int WebView::preferredWidth + This property holds the ideal width for displaying the current URL. +*/ +int QDeclarativeWebView::preferredWidth() const +{ + Q_D(const QDeclarativeWebView); + return d->preferredwidth; +} + +void QDeclarativeWebView::setPreferredWidth(int iw) +{ + Q_D(QDeclarativeWebView); + if (d->preferredwidth == iw) return; + d->preferredwidth = iw; + //expandToWebPage(); + emit preferredWidthChanged(); +} + +/*! + \qmlproperty int WebView::preferredHeight + This property holds the ideal height for displaying the current URL. + This only affects the area zoomed by heuristicZoom(). +*/ +int QDeclarativeWebView::preferredHeight() const +{ + Q_D(const QDeclarativeWebView); + return d->preferredheight; +} +void QDeclarativeWebView::setPreferredHeight(int ih) +{ + Q_D(QDeclarativeWebView); + if (d->preferredheight == ih) return; + d->preferredheight = ih; + emit preferredHeightChanged(); +} + +/*! + \qmlmethod bool WebView::evaluateJavaScript(string) + + Evaluates the \a scriptSource JavaScript inside the context of the + main web frame, and returns the result of the last executed statement. + + Note that this JavaScript does \e not have any access to QML objects + except as made available as windowObjects. +*/ +QVariant QDeclarativeWebView::evaluateJavaScript(const QString &scriptSource) +{ + return this->page()->mainFrame()->evaluateJavaScript(scriptSource); +} + +void QDeclarativeWebView::focusChanged(bool hasFocus) +{ + QFocusEvent e(hasFocus ? QEvent::FocusIn : QEvent::FocusOut); + page()->event(&e); + QDeclarativeItem::focusChanged(hasFocus); +} + +void QDeclarativeWebView::initialLayout() +{ + // nothing useful to do at this point +} + +void QDeclarativeWebView::noteContentsSizeChanged(const QSize&) +{ + expandToWebPage(); +} + +void QDeclarativeWebView::expandToWebPage() +{ + Q_D(QDeclarativeWebView); + QSize cs = page()->mainFrame()->contentsSize(); + if (cs.width() < d->preferredwidth) + cs.setWidth(d->preferredwidth); + if (cs.height() < d->preferredheight) + cs.setHeight(d->preferredheight); + if (widthValid()) + cs.setWidth(width()); + if (heightValid()) + cs.setHeight(height()); + if (cs != page()->viewportSize()) { + page()->setViewportSize(cs); + } + if (cs != contentsSize()) + setContentsSize(cs); +} + +void QDeclarativeWebView::geometryChanged(const QRectF &newGeometry, + const QRectF &oldGeometry) +{ + if (newGeometry.size() != oldGeometry.size()) + expandToWebPage(); + QDeclarativePaintedItem::geometryChanged(newGeometry, oldGeometry); +} + +void QDeclarativeWebView::paintPage(const QRect& r) +{ + dirtyCache(r); + update(); +} + +/*! + \qmlproperty list<object> WebView::javaScriptWindowObjects + + This property is a list of object that are available from within + the webview's JavaScript context. + + The \a object will be inserted as a child of the frame's window + object, under the name given by the attached property \c WebView.windowObjectName. + + \qml + WebView { + javaScriptWindowObjects: Object { + WebView.windowObjectName: "coordinates" + } + } + \endqml + + Properties of the object will be exposed as JavaScript properties and slots as + JavaScript methods. + + If Javascript is not enabled for this page, then this property does nothing. +*/ +QDeclarativeListProperty<QObject> QDeclarativeWebView::javaScriptWindowObjects() +{ + Q_D(QDeclarativeWebView); + return QDeclarativeListProperty<QObject>(this, d, &QDeclarativeWebViewPrivate::windowObjects_append); +} + +QDeclarativeWebViewAttached *QDeclarativeWebView::qmlAttachedProperties(QObject *o) +{ + return new QDeclarativeWebViewAttached(o); +} + +void QDeclarativeWebViewPrivate::updateWindowObjects() +{ + Q_Q(QDeclarativeWebView); + if (!q->isComponentComplete() || !page) + return; + + for (int ii = 0; ii < windowObjects.count(); ++ii) { + QObject *object = windowObjects.at(ii); + QDeclarativeWebViewAttached *attached = static_cast<QDeclarativeWebViewAttached *>(qmlAttachedPropertiesObject<QDeclarativeWebView>(object)); + if (attached && !attached->windowObjectName().isEmpty()) { + page->mainFrame()->addToJavaScriptWindowObject(attached->windowObjectName(), object); + } + } +} + +bool QDeclarativeWebView::renderingEnabled() const +{ + Q_D(const QDeclarativeWebView); + return d->rendering; +} + +void QDeclarativeWebView::setRenderingEnabled(bool enabled) +{ + Q_D(QDeclarativeWebView); + if (d->rendering == enabled) + return; + d->rendering = enabled; + emit renderingEnabledChanged(); + + setCacheFrozen(!enabled); + if (enabled) + clearCache(); +} + + +void QDeclarativeWebView::drawContents(QPainter *p, const QRect &r) +{ + Q_D(QDeclarativeWebView); + if (d->rendering) + page()->mainFrame()->render(p,r); +} + +QMouseEvent *QDeclarativeWebView::sceneMouseEventToMouseEvent(QGraphicsSceneMouseEvent *e) +{ + QEvent::Type t; + switch(e->type()) { + default: + case QEvent::GraphicsSceneMousePress: + t = QEvent::MouseButtonPress; + break; + case QEvent::GraphicsSceneMouseRelease: + t = QEvent::MouseButtonRelease; + break; + case QEvent::GraphicsSceneMouseMove: + t = QEvent::MouseMove; + break; + case QGraphicsSceneEvent::GraphicsSceneMouseDoubleClick: + t = QEvent::MouseButtonDblClick; + break; + } + + QMouseEvent *me = new QMouseEvent(t, (e->pos()/contentsScale()).toPoint(), e->button(), e->buttons(), 0); + return me; +} + +QMouseEvent *QDeclarativeWebView::sceneHoverMoveEventToMouseEvent(QGraphicsSceneHoverEvent *e) +{ + QEvent::Type t = QEvent::MouseMove; + + QMouseEvent *me = new QMouseEvent(t, (e->pos()/contentsScale()).toPoint(), Qt::NoButton, Qt::NoButton, 0); + + return me; +} + + +/*! + \qmlsignal WebView::onDoubleClick(clickx,clicky) + + The WebView does not pass double-click events to the web engine, but rather + emits this signals. +*/ + +void QDeclarativeWebView::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) +{ + QMouseEvent *me = sceneMouseEventToMouseEvent(event); + emit doubleClick(me->x(),me->y()); + delete me; +} + +/*! + \qmlmethod bool WebView::heuristicZoom(clickX,clickY,maxzoom) + + Finds a zoom that: + \list + \i shows a whole item + \i includes (\a clickX, \a clickY) + \i fits into the preferredWidth and preferredHeight + \i zooms by no more than \a maxzoom + \i is more than 10% above the current zoom + \endlist + + If such a zoom exists, emits zoomTo(zoom,centerX,centerY) and returns true; otherwise, + no signal is emitted and returns false. +*/ +bool QDeclarativeWebView::heuristicZoom(int clickX, int clickY, qreal maxzoom) +{ + Q_D(QDeclarativeWebView); + if (contentsScale() >= maxzoom/zoomFactor()) + return false; + qreal ozf = contentsScale(); + QRect showarea = elementAreaAt(clickX, clickY, d->preferredwidth/maxzoom, d->preferredheight/maxzoom); + qreal z = qMin(qreal(d->preferredwidth)/showarea.width(),qreal(d->preferredheight)/showarea.height()); + if (z > maxzoom/zoomFactor()) + z = maxzoom/zoomFactor(); + if (z/ozf > 1.2) { + QRectF r(showarea.left()*z, showarea.top()*z, showarea.width()*z, showarea.height()*z); + emit zoomTo(z,r.x()+r.width()/2, r.y()+r.height()/2); + return true; + } else { + return false; + } +} + +/*! + \qmlproperty int WebView::pressGrabTime + + The number of milliseconds the user must press before the WebView + starts passing move events through to the web engine (rather than + letting other QML elements such as a Flickable take them). + + Defaults to 400ms. Set to 0 to always grab and pass move events to + the web engine. +*/ +int QDeclarativeWebView::pressGrabTime() const +{ + Q_D(const QDeclarativeWebView); + return d->pressTime; +} + +void QDeclarativeWebView::setPressGrabTime(int ms) +{ + Q_D(QDeclarativeWebView); + if (d->pressTime == ms) + return; + d->pressTime = ms; + emit pressGrabTimeChanged(); +} + +void QDeclarativeWebView::mousePressEvent(QGraphicsSceneMouseEvent *event) +{ + Q_D(QDeclarativeWebView); + + setFocus (true); + QMouseEvent *me = sceneMouseEventToMouseEvent(event); + + d->pressPoint = me->pos(); + if (d->pressTime) { + d->pressTimer.start(d->pressTime,this); + setKeepMouseGrab(false); + } else { + grabMouse(); + setKeepMouseGrab(true); + } + + page()->event(me); + event->setAccepted( +/* + It is not correct to send the press event upwards, if it is not accepted by WebKit + e.g. push button does not work, if done so as QGraphicsScene will not send the release event at all to WebKit + Might be a bug in WebKit, though + */ +#if 1 //QT_VERSION <= 0x040500 // XXX see bug 230835 + true +#else + me->isAccepted() +#endif + ); + delete me; + if (!event->isAccepted()) { + QDeclarativePaintedItem::mousePressEvent(event); + } +} + +void QDeclarativeWebView::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) +{ + Q_D(QDeclarativeWebView); + + QMouseEvent *me = sceneMouseEventToMouseEvent(event); + page()->event(me); + d->pressTimer.stop(); + event->setAccepted( +/* + It is not correct to send the press event upwards, if it is not accepted by WebKit + e.g. push button does not work, if done so as QGraphicsScene will not send all the events to WebKit + */ +#if 1 //QT_VERSION <= 0x040500 // XXX see bug 230835 + true +#else + me->isAccepted() +#endif + ); + delete me; + if (!event->isAccepted()) { + QDeclarativePaintedItem::mouseReleaseEvent(event); + } + setKeepMouseGrab(false); + ungrabMouse(); +} + +void QDeclarativeWebView::timerEvent(QTimerEvent *event) +{ + Q_D(QDeclarativeWebView); + if (event->timerId() == d->pressTimer.timerId()) { + d->pressTimer.stop(); + grabMouse(); + setKeepMouseGrab(true); + } +} + +void QDeclarativeWebView::mouseMoveEvent(QGraphicsSceneMouseEvent *event) +{ + Q_D(QDeclarativeWebView); + + QMouseEvent *me = sceneMouseEventToMouseEvent(event); + if (d->pressTimer.isActive()) { + if ((me->pos() - d->pressPoint).manhattanLength() > QApplication::startDragDistance()) { + d->pressTimer.stop(); + } + } + if (keepMouseGrab()) { + page()->event(me); + event->setAccepted( +/* + It is not correct to send the press event upwards, if it is not accepted by WebKit + e.g. push button does not work, if done so as QGraphicsScene will not send the release event at all to WebKit + Might be a bug in WebKit, though + */ +#if 1 // QT_VERSION <= 0x040500 // XXX see bug 230835 + true +#else + me->isAccepted() +#endif + ); + } + delete me; + if (!event->isAccepted()) + QDeclarativePaintedItem::mouseMoveEvent(event); + +} +void QDeclarativeWebView::hoverMoveEvent (QGraphicsSceneHoverEvent * event) +{ + QMouseEvent *me = sceneHoverMoveEventToMouseEvent(event); + page()->event(me); + event->setAccepted( +#if QT_VERSION <= 0x040500 // XXX see bug 230835 + true +#else + me->isAccepted() +#endif + ); + delete me; + if (!event->isAccepted()) + QDeclarativePaintedItem::hoverMoveEvent(event); +} + +void QDeclarativeWebView::keyPressEvent(QKeyEvent* event) +{ + page()->event(event); + if (!event->isAccepted()) + QDeclarativePaintedItem::keyPressEvent(event); +} + +void QDeclarativeWebView::keyReleaseEvent(QKeyEvent* event) +{ + page()->event(event); + if (!event->isAccepted()) + QDeclarativePaintedItem::keyReleaseEvent(event); +} + +bool QDeclarativeWebView::sceneEvent(QEvent *event) +{ + if (event->type() == QEvent::KeyPress) { + QKeyEvent *k = static_cast<QKeyEvent *>(event); + if (k->key() == Qt::Key_Tab || k->key() == Qt::Key_Backtab) { + if (!(k->modifiers() & (Qt::ControlModifier | Qt::AltModifier))) { //### Add MetaModifier? + page()->event(event); + if (event->isAccepted()) + return true; + } + } + } + return QDeclarativePaintedItem::sceneEvent(event); +} + + +/*! + \qmlproperty action WebView::back + This property holds the action for causing the previous URL in the history to be displayed. +*/ +QAction *QDeclarativeWebView::backAction() const +{ + return page()->action(QWebPage::Back); +} + +/*! + \qmlproperty action WebView::forward + This property holds the action for causing the next URL in the history to be displayed. +*/ +QAction *QDeclarativeWebView::forwardAction() const +{ + return page()->action(QWebPage::Forward); +} + +/*! + \qmlproperty action WebView::reload + This property holds the action for reloading with the current URL +*/ +QAction *QDeclarativeWebView::reloadAction() const +{ + return page()->action(QWebPage::Reload); +} + +/*! + \qmlproperty action WebView::stop + This property holds the action for stopping loading with the current URL +*/ +QAction *QDeclarativeWebView::stopAction() const +{ + return page()->action(QWebPage::Stop); +} + +/*! + \qmlproperty real WebView::title + This property holds the title of the web page currently viewed + + By default, this property contains an empty string. +*/ +QString QDeclarativeWebView::title() const +{ + return page()->mainFrame()->title(); +} + + + +/*! + \qmlproperty pixmap WebView::icon + This property holds the icon associated with the web page currently viewed +*/ +QPixmap QDeclarativeWebView::icon() const +{ + return page()->mainFrame()->icon().pixmap(QSize(256,256)); +} + + +/*! + \qmlproperty real WebView::zoomFactor + This property holds the multiplier used to scale the contents of a Web page. +*/ +void QDeclarativeWebView::setZoomFactor(qreal factor) +{ + Q_D(QDeclarativeWebView); + if (factor == page()->mainFrame()->zoomFactor()) + return; + + page()->mainFrame()->setZoomFactor(factor); + page()->setViewportSize(QSize( + d->preferredwidth>0 ? d->preferredwidth*factor : width()*factor, + d->preferredheight>0 ? d->preferredheight*factor : height()*factor)); + expandToWebPage(); + + emit zoomFactorChanged(); +} + +qreal QDeclarativeWebView::zoomFactor() const +{ + return page()->mainFrame()->zoomFactor(); +} + +/*! + \qmlproperty string WebView::statusText + + This property is the current status suggested by the current web page. In a web browser, + such status is often shown in some kind of status bar. +*/ +void QDeclarativeWebView::setStatusText(const QString& s) +{ + Q_D(QDeclarativeWebView); + d->statusText = s; + emit statusTextChanged(); +} + +void QDeclarativeWebView::windowObjectCleared() +{ + Q_D(QDeclarativeWebView); + d->updateWindowObjects(); +} + +QString QDeclarativeWebView::statusText() const +{ + Q_D(const QDeclarativeWebView); + return d->statusText; +} + +QWebPage *QDeclarativeWebView::page() const +{ + Q_D(const QDeclarativeWebView); + + if (!d->page) { + QDeclarativeWebView *self = const_cast<QDeclarativeWebView*>(this); + QWebPage *wp = new QDeclarativeWebPage(self); + + // QML items don't default to having a background, + // even though most we pages will set one anyway. + QPalette pal = QApplication::palette(); + pal.setBrush(QPalette::Base, QColor::fromRgbF(0, 0, 0, 0)); + wp->setPalette(pal); + + wp->setNetworkAccessManager(qmlEngine(this)->networkAccessManager()); + + self->setPage(wp); + + return wp; + } + + return d->page; +} + + +// The QObject interface to settings(). +/*! + \qmlproperty string WebView::settings.standardFontFamily + \qmlproperty string WebView::settings.fixedFontFamily + \qmlproperty string WebView::settings.serifFontFamily + \qmlproperty string WebView::settings.sansSerifFontFamily + \qmlproperty string WebView::settings.cursiveFontFamily + \qmlproperty string WebView::settings.fantasyFontFamily + + \qmlproperty int WebView::settings.minimumFontSize + \qmlproperty int WebView::settings.minimumLogicalFontSize + \qmlproperty int WebView::settings.defaultFontSize + \qmlproperty int WebView::settings.defaultFixedFontSize + + \qmlproperty bool WebView::settings.autoLoadImages + \qmlproperty bool WebView::settings.javascriptEnabled + \qmlproperty bool WebView::settings.javaEnabled + \qmlproperty bool WebView::settings.pluginsEnabled + \qmlproperty bool WebView::settings.privateBrowsingEnabled + \qmlproperty bool WebView::settings.javascriptCanOpenWindows + \qmlproperty bool WebView::settings.javascriptCanAccessClipboard + \qmlproperty bool WebView::settings.developerExtrasEnabled + \qmlproperty bool WebView::settings.linksIncludedInFocusChain + \qmlproperty bool WebView::settings.zoomTextOnly + \qmlproperty bool WebView::settings.printElementBackgrounds + \qmlproperty bool WebView::settings.offlineStorageDatabaseEnabled + \qmlproperty bool WebView::settings.offlineWebApplicationCacheEnabled + \qmlproperty bool WebView::settings.localStorageDatabaseEnabled + \qmlproperty bool WebView::settings.localContentCanAccessRemoteUrls + + These properties give access to the settings controlling the web view. + + See QWebSettings for details of these properties. + + \qml + WebView { + settings.pluginsEnabled: true + settings.standardFontFamily: "Arial" + ... + } + \endqml +*/ +QObject *QDeclarativeWebView::settingsObject() const +{ + Q_D(const QDeclarativeWebView); + d->settings.s = page()->settings(); + return &d->settings; +} + +void QDeclarativeWebView::setPage(QWebPage *page) +{ + Q_D(QDeclarativeWebView); + if (d->page == page) + return; + if (d->page) { + if (d->page->parent() == this) { + delete d->page; + } else { + d->page->disconnect(this); + } + } + d->page = page; + d->page->setViewportSize(QSize( + d->preferredwidth>0 ? d->preferredwidth : width(), + d->preferredheight>0 ? d->preferredheight : height())); + d->page->mainFrame()->setScrollBarPolicy(Qt::Horizontal,Qt::ScrollBarAlwaysOff); + d->page->mainFrame()->setScrollBarPolicy(Qt::Vertical,Qt::ScrollBarAlwaysOff); + connect(d->page,SIGNAL(repaintRequested(QRect)),this,SLOT(paintPage(QRect))); + connect(d->page->mainFrame(),SIGNAL(urlChanged(QUrl)),this,SLOT(pageUrlChanged())); + connect(d->page->mainFrame(), SIGNAL(titleChanged(QString)), this, SIGNAL(titleChanged(QString))); + connect(d->page->mainFrame(), SIGNAL(titleChanged(QString)), this, SIGNAL(iconChanged())); + connect(d->page->mainFrame(), SIGNAL(iconChanged()), this, SIGNAL(iconChanged())); + connect(d->page->mainFrame(), SIGNAL(contentsSizeChanged(QSize)), this, SLOT(noteContentsSizeChanged(QSize))); + connect(d->page->mainFrame(), SIGNAL(initialLayoutCompleted()), this, SLOT(initialLayout())); + + connect(d->page,SIGNAL(loadStarted()),this,SLOT(doLoadStarted())); + connect(d->page,SIGNAL(loadProgress(int)),this,SLOT(doLoadProgress(int))); + connect(d->page,SIGNAL(loadFinished(bool)),this,SLOT(doLoadFinished(bool))); + connect(d->page,SIGNAL(statusBarMessage(QString)),this,SLOT(setStatusText(QString))); + + connect(d->page->mainFrame(),SIGNAL(javaScriptWindowObjectCleared()),this,SLOT(windowObjectCleared())); +} + +/*! + \qmlsignal WebView::onLoadStarted() + + This handler is called when the web engine begins loading + a page. Later, WebView::onLoadFinished() or WebView::onLoadFailed() + will be emitted. +*/ + +/*! + \qmlsignal WebView::onLoadFinished() + + This handler is called when the web engine \e successfully + finishes loading a page, including any component content + (WebView::onLoadFailed() will be emitted otherwise). + + \sa progress +*/ + +/*! + \qmlsignal WebView::onLoadFailed() + + This handler is called when the web engine fails loading + a page or any component content + (WebView::onLoadFinished() will be emitted on success). +*/ + +void QDeclarativeWebView::load(const QNetworkRequest &request, + QNetworkAccessManager::Operation operation, + const QByteArray &body) +{ + page()->mainFrame()->load(request, operation, body); +} + +QString QDeclarativeWebView::html() const +{ + return page()->mainFrame()->toHtml(); +} + +/*! + \qmlproperty string WebView::html + This property holds HTML text set directly + + The html property can be set as a string. + + \qml + WebView { + html: "<p>This is <b>HTML</b>." + } + \endqml +*/ +void QDeclarativeWebView::setHtml(const QString &html, const QUrl &baseUrl) +{ + Q_D(QDeclarativeWebView); + page()->setViewportSize(QSize( + d->preferredwidth>0 ? d->preferredwidth : width(), + d->preferredheight>0 ? d->preferredheight : height())); + if (isComponentComplete()) + page()->mainFrame()->setHtml(html, baseUrl); + else { + d->pending = d->PendingHtml; + d->pending_url = baseUrl; + d->pending_string = html; + } + emit htmlChanged(); +} + +void QDeclarativeWebView::setContent(const QByteArray &data, const QString &mimeType, const QUrl &baseUrl) +{ + Q_D(QDeclarativeWebView); + page()->setViewportSize(QSize( + d->preferredwidth>0 ? d->preferredwidth : width(), + d->preferredheight>0 ? d->preferredheight : height())); + + if (isComponentComplete()) + page()->mainFrame()->setContent(data,mimeType,qmlContext(this)->resolvedUrl(baseUrl)); + else { + d->pending = d->PendingContent; + d->pending_url = baseUrl; + d->pending_string = mimeType; + d->pending_data = data; + } +} + +QWebHistory *QDeclarativeWebView::history() const +{ + return page()->history(); +} + +QWebSettings *QDeclarativeWebView::settings() const +{ + return page()->settings(); +} + +QDeclarativeWebView *QDeclarativeWebView::createWindow(QWebPage::WebWindowType type) +{ + Q_D(QDeclarativeWebView); + switch (type) { + case QWebPage::WebBrowserWindow: { + if (!d->newWindowComponent && d->newWindowParent) + qWarning("WebView::newWindowComponent not set - WebView::newWindowParent ignored"); + else if (d->newWindowComponent && !d->newWindowParent) + qWarning("WebView::newWindowParent not set - WebView::newWindowComponent ignored"); + else if (d->newWindowComponent && d->newWindowParent) { + QDeclarativeWebView *webview = 0; + QDeclarativeContext *windowContext = new QDeclarativeContext(qmlContext(this)); + + QObject *nobj = d->newWindowComponent->create(windowContext); + if (nobj) { + windowContext->setParent(nobj); + QDeclarativeItem *item = qobject_cast<QDeclarativeItem *>(nobj); + if (!item) { + delete nobj; + } else { + webview = item->findChild<QDeclarativeWebView*>(); + if (!webview) { + delete item; + } else { + nobj->setParent(d->newWindowParent); + static_cast<QGraphicsObject*>(item)->setParentItem(d->newWindowParent); + } + } + } else { + delete windowContext; + } + + return webview; + } + } + break; + case QWebPage::WebModalDialog: { + // Not supported + } + } + return 0; +} + +/*! + \qmlproperty component WebView::newWindowComponent + + This property holds the component to use for new windows. + The component must have a WebView somewhere in its structure. + + When the web engine requests a new window, it will be an instance of + this component. + + The parent of the new window is set by newWindowParent. It must be set. +*/ +QDeclarativeComponent *QDeclarativeWebView::newWindowComponent() const +{ + Q_D(const QDeclarativeWebView); + return d->newWindowComponent; +} + +void QDeclarativeWebView::setNewWindowComponent(QDeclarativeComponent *newWindow) +{ + Q_D(QDeclarativeWebView); + if (newWindow == d->newWindowComponent) + return; + d->newWindowComponent = newWindow; + emit newWindowComponentChanged(); +} + + +/*! + \qmlproperty item WebView::newWindowParent + + The parent item for new windows. + + \sa newWindowComponent +*/ +QDeclarativeItem *QDeclarativeWebView::newWindowParent() const +{ + Q_D(const QDeclarativeWebView); + return d->newWindowParent; +} + +void QDeclarativeWebView::setNewWindowParent(QDeclarativeItem *parent) +{ + Q_D(QDeclarativeWebView); + if (parent == d->newWindowParent) + return; + if (d->newWindowParent && parent) { + QList<QGraphicsItem *> children = d->newWindowParent->childItems(); + for (int i = 0; i < children.count(); ++i) { + children.at(i)->setParentItem(parent); + } + } + d->newWindowParent = parent; + emit newWindowParentChanged(); +} + +/*! + Returns the area of the largest element at position (\a x,\a y) that is no larger + than \a maxwidth by \a maxheight pixels. + + May return an area larger in the case when no smaller element is at the position. +*/ +QRect QDeclarativeWebView::elementAreaAt(int x, int y, int maxwidth, int maxheight) const +{ + QWebHitTestResult hit = page()->mainFrame()->hitTestContent(QPoint(x,y)); + QRect rv = hit.boundingRect(); + QWebElement element = hit.enclosingBlockElement(); + if (maxwidth<=0) maxwidth = INT_MAX; + if (maxheight<=0) maxheight = INT_MAX; + while (!element.parent().isNull() && element.geometry().width() <= maxwidth && element.geometry().height() <= maxheight) { + rv = element.geometry(); + element = element.parent(); + } + return rv; +} + +/*! + \internal + \class QDeclarativeWebPage + \brief The QDeclarativeWebPage class is a QWebPage that can create QML plugins. + + \sa QDeclarativeWebView +*/ +QDeclarativeWebPage::QDeclarativeWebPage(QDeclarativeWebView *parent) : + QWebPage(parent) +{ +} + +QDeclarativeWebPage::~QDeclarativeWebPage() +{ +} + +void QDeclarativeWebPage::javaScriptConsoleMessage(const QString& message, int lineNumber, const QString& sourceID) +{ + qWarning() << sourceID << ':' << lineNumber << ':' << message; +} + +QString QDeclarativeWebPage::chooseFile(QWebFrame *originatingFrame, const QString& oldFile) +{ + // Not supported (it's modal) + Q_UNUSED(originatingFrame) + Q_UNUSED(oldFile) + return oldFile; +} + +void QDeclarativeWebPage::javaScriptAlert(QWebFrame *originatingFrame, const QString& msg) +{ + Q_UNUSED(originatingFrame) + emit viewItem()->alert(msg); +} + +bool QDeclarativeWebPage::javaScriptConfirm(QWebFrame *originatingFrame, const QString& msg) +{ + // Not supported (it's modal) + Q_UNUSED(originatingFrame) + Q_UNUSED(msg) + return false; +} + +bool QDeclarativeWebPage::javaScriptPrompt(QWebFrame *originatingFrame, const QString& msg, const QString& defaultValue, QString* result) +{ + // Not supported (it's modal) + Q_UNUSED(originatingFrame) + Q_UNUSED(msg) + Q_UNUSED(defaultValue) + Q_UNUSED(result) + return false; +} + + +/* + Qt WebKit does not understand non-QWidget plugins, so dummy widgets + are created, parented to a single dummy tool window. + + The requirements for QML object plugins are input to the Qt WebKit + non-QWidget plugin support, which will obsolete this kludge. +*/ +class QWidget_Dummy_Plugin : public QWidget +{ + Q_OBJECT +public: + static QWidget *dummy_shared_parent() + { + static QWidget *dsp = 0; + if (!dsp) { + dsp = new QWidget(0,Qt::Tool); + dsp->setGeometry(-10000,-10000,0,0); + dsp->show(); + } + return dsp; + } + QWidget_Dummy_Plugin(const QUrl& url, QDeclarativeWebView *view, const QStringList ¶mNames, const QStringList ¶mValues) : + QWidget(dummy_shared_parent()), + propertyNames(paramNames), + propertyValues(paramValues), + webview(view) + { + QDeclarativeEngine *engine = qmlEngine(webview); + component = new QDeclarativeComponent(engine, url, this); + item = 0; + if (component->isLoading()) + connect(component, SIGNAL(statusChanged(QDeclarativeComponent::Status)), this, SLOT(qmlLoaded())); + else + qmlLoaded(); + } + +public Q_SLOTS: + void qmlLoaded() + { + if (component->isError()) { + // ### Could instead give these errors to the WebView to handle. + qWarning() << component->errors(); + return; + } + item = qobject_cast<QDeclarativeItem*>(component->create(qmlContext(webview))); + item->setParent(webview); + QString jsObjName; + for (int i=0; i<propertyNames.count(); ++i) { + if (propertyNames[i] != QLatin1String("type") && propertyNames[i] != QLatin1String("data")) { + item->setProperty(propertyNames[i].toUtf8(),propertyValues[i]); + if (propertyNames[i] == QLatin1String("objectname")) + jsObjName = propertyValues[i]; + } + } + if (!jsObjName.isNull()) { + QWebFrame *f = webview->page()->mainFrame(); + f->addToJavaScriptWindowObject(jsObjName, item); + } + resizeEvent(0); + delete component; + component = 0; + } + void resizeEvent(QResizeEvent*) + { + if (item) { + item->setX(x()); + item->setY(y()); + item->setWidth(width()); + item->setHeight(height()); + } + } + +private: + QDeclarativeComponent *component; + QDeclarativeItem *item; + QStringList propertyNames, propertyValues; + QDeclarativeWebView *webview; +}; + +QDeclarativeWebView *QDeclarativeWebPage::viewItem() +{ + return static_cast<QDeclarativeWebView*>(parent()); +} + +QObject *QDeclarativeWebPage::createPlugin(const QString &, const QUrl &url, const QStringList ¶mNames, const QStringList ¶mValues) +{ + QUrl comp = qmlContext(viewItem())->resolvedUrl(url); + return new QWidget_Dummy_Plugin(comp,viewItem(),paramNames,paramValues); +} + +QWebPage *QDeclarativeWebPage::createWindow(WebWindowType type) +{ + QDeclarativeWebView *newView = viewItem()->createWindow(type); + if (newView) + return newView->page(); + return 0; +} + +QT_END_NAMESPACE + +#include <qdeclarativewebview.moc> |