WebKit/qt/Api/qwebframe.cpp

   1 /*
   2     Copyright (C) 2007 Trolltech ASA
   3     Copyright (C) 2007 Staikos Computing Services Inc.
   4
   5     This library is free software; you can redistribute it and/or
   6     modify it under the terms of the GNU Library General Public
   7     License as published by the Free Software Foundation; either
   8     version 2 of the License, or (at your option) any later version.
   9
  10     This library is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     Library General Public License for more details.
  14
  15     You should have received a copy of the GNU Library General Public License
  16     along with this library; see the file COPYING.LIB.  If not, write to
  17     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18     Boston, MA 02110-1301, USA.
  19
  20     This class provides all functionality needed for loading images, style sheets and html
  21     pages from the web. It has a memory cache for these objects.
  22 */
  23 #include "config.h"
  24 #include "qwebframe.h"
  25 #include "qwebpage.h"
  26 #include "qwebpage_p.h"
  27 #include "qwebframe_p.h"
  28 #include "qwebnetworkinterface.h"
  29
  30 #include "FocusController.h"
  31 #include "FrameLoaderClientQt.h"
  32 #include "Frame.h"
  33 #include "FrameTree.h"
  34 #include "FrameView.h"
  35 #include "IconDatabase.h"
  36 #include "Page.h"
  37 #include "ResourceRequest.h"
  38 #include "SelectionController.h"
  39 #include "PlatformScrollBar.h"
  40 #include "SubstituteData.h"
  41
  42 #include "markup.h"
  43 #include "RenderTreeAsText.h"
  44 #include "Element.h"
  45 #include "Document.h"
  46 #include "DragData.h"
  47 #include "RenderObject.h"
  48 #include "GraphicsContext.h"
  49 #include "PlatformScrollBar.h"
  50 #include "PlatformMouseEvent.h"
  51 #include "PlatformWheelEvent.h"
  52 #include "GraphicsContext.h"
  53 #include "HitTestResult.h"
  54
  55 #include "bindings/runtime.h"
  56 #include "bindings/runtime_root.h"
  57 #include "kjs_proxy.h"
  58 #include "kjs_window.h"
  59 #include "kjs_binding.h"
  60 #include "ExecState.h"
  61 #include "object.h"
  62
  63 #include "wtf/HashMap.h"
  64
  65 #include <qdebug.h>
  66 #include <qevent.h>
  67 #include <qpainter.h>
  68
  69 using namespace WebCore;
  70
  71 void QWebFramePrivate::init(QWebFrame *qframe, WebCore::Page *webcorePage, QWebFrameData *frameData)
  72 {
  73     q = qframe;
  74
  75     frameLoaderClient = new FrameLoaderClientQt();
  76     frame = new Frame(webcorePage, frameData->ownerElement, frameLoaderClient);
  77     frameLoaderClient->setFrame(qframe, frame.get());
  78
  79     frameView = new FrameView(frame.get());
  80     frameView->deref();
  81     frameView->setQWebFrame(qframe);
  82     if (!frameData->allowsScrolling)
  83         frameView->setScrollbarsMode(ScrollbarAlwaysOff);
  84     if (frameData->marginWidth != -1)
  85         frameView->setMarginWidth(frameData->marginWidth);
  86     if (frameData->marginHeight != -1)
  87         frameView->setMarginHeight(frameData->marginHeight);
  88
  89     frame->setView(frameView.get());
  90     frame->init();
  91     eventHandler = frame->eventHandler();
  92
  93     QObject::connect(q, SIGNAL(hoveringOverLink(const QString&, const QString&, const QString&)),
  94                      page, SIGNAL(hoveringOverLink(const QString&, const QString&, const QString&)));
  95 }
  96
  97 QWebFrame *QWebFramePrivate::parentFrame()
  98 {
  99     return qobject_cast<QWebFrame*>(q->parent());
 100 }
 101
 102 WebCore::PlatformScrollbar *QWebFramePrivate::horizontalScrollBar() const
 103 {
 104     Q_ASSERT(frameView);
 105     return frameView->horizontalScrollBar();
 106 }
 107
 108 WebCore::PlatformScrollbar *QWebFramePrivate::verticalScrollBar() const
 109 {
 110     Q_ASSERT(frameView);
 111     return frameView->verticalScrollBar();
 112 }
 113
 114 QWebFrame::QWebFrame(QWebPage *parent, QWebFrameData *frameData)
 115     : QObject(parent)
 116     , d(new QWebFramePrivate)
 117 {
 118     d->page = parent;
 119     d->init(this, parent->d->page, frameData);
 120
 121     if (!frameData->url.isEmpty()) {
 122         ResourceRequest request(frameData->url, frameData->referrer);
 123         d->frame->loader()->load(request, frameData->name);
 124     }
 125 }
 126
 127 QWebFrame::QWebFrame(QWebFrame *parent, QWebFrameData *frameData)
 128     : QObject(parent)
 129     , d(new QWebFramePrivate)
 130 {
 131     d->page = parent->d->page;
 132     d->init(this, parent->d->page->d->page, frameData);
 133 }
 134
 135 QWebFrame::~QWebFrame()
 136 {
 137     Q_ASSERT(d->frame == 0);
 138     Q_ASSERT(d->frameView == 0);
 139     delete d;
 140 }
 141
 142 void QWebFrame::addToJSWindowObject(const QString &name, QObject *object)
 143 {
 144       KJS::JSLock lock;
 145       KJS::Window *window = KJS::Window::retrieveWindow(d->frame.get());
 146       KJS::Bindings::RootObject *root = d->frame->bindingRootObject();
 147       if (!window) {
 148           qDebug() << "Warning: couldn't get window object";
 149           return;
 150       }
 151
 152       KJS::JSObject *runtimeObject =
 153         KJS::Bindings::Instance::createRuntimeObject(KJS::Bindings::Instance::QtLanguage,
 154                                                      object, root);
 155
 156       window->put(window->globalExec(), KJS::Identifier((const KJS::UChar *) name.constData(), name.length()), runtimeObject);
 157 }
 158
 159
 160 QString QWebFrame::markup() const
 161 {
 162     if (!d->frame->document())
 163         return QString();
 164     return createMarkup(d->frame->document());
 165 }
 166
 167 QString QWebFrame::innerText() const
 168 {
 169     if (d->frameView->layoutPending())
 170         d->frameView->layout();
 171
 172     Element *documentElement = d->frame->document()->documentElement();
 173     return documentElement->innerText();
 174 }
 175
 176 QString QWebFrame::renderTreeDump() const
 177 {
 178     if (d->frameView->layoutPending())
 179         d->frameView->layout();
 180
 181     return externalRepresentation(d->frame->renderer());
 182 }
 183
 184 QString QWebFrame::title() const
 185 {
 186     if (d->frame->document())
 187         return d->frame->document()->title();
 188     else return QString();
 189 }
 190
 191 QUrl QWebFrame::url() const
 192 {
 193     return QUrl((QString)d->frame->loader()->url().string());
 194 }
 195
 196 QPixmap QWebFrame::icon() const
 197 {
 198     String url = d->frame->loader()->url().string();
 199     Image* image = iconDatabase()->iconForPageURL(url, IntSize(16, 16));
 200     if (!image || image->isNull()) {
 201         image = iconDatabase()->defaultIcon(IntSize(16, 16));
 202     }
 203
 204     if (!image) {
 205         return QPixmap();
 206     }
 207
 208     QPixmap *icon = image->getPixmap();
 209     if (!icon) {
 210         return QPixmap();
 211     }
 212     return *icon;
 213 }
 214
 215
 216 QString QWebFrame::name() const
 217 {
 218     return d->frame->tree()->name();
 219 }
 220
 221 QWebPage * QWebFrame::page() const
 222 {
 223     return d->page;
 224 }
 225
 226 void QWebFrame::load(const QUrl &url)
 227 {
 228     load(QWebNetworkRequest(url));
 229 }
 230
 231 void QWebFrame::load(const QWebNetworkRequest &req)
 232 {
 233     if (d->parentFrame())
 234         d->page->d->insideOpenCall = true;
 235
 236     QUrl url = req.url();
 237     QHttpRequestHeader httpHeader = req.httpHeader();
 238     QByteArray postData = req.postData();
 239
 240     WebCore::ResourceRequest request(KURL(url.toString()));
 241
 242     QString method = httpHeader.method();
 243     if (!method.isEmpty())
 244         request.setHTTPMethod(method);
 245
 246     QList<QPair<QString, QString> > values = httpHeader.values();
 247     for (int i = 0; i < values.size(); ++i) {
 248         const QPair<QString, QString> &val = values.at(i);
 249         request.addHTTPHeaderField(val.first, val.second);
 250     }
 251
 252     if (!postData.isEmpty()) {
 253         WTF::RefPtr<WebCore::FormData> formData = new WebCore::FormData(postData.constData(), postData.size());
 254         request.setHTTPBody(formData);
 255     }
 256
 257     d->frame->loader()->load(request);
 258
 259     if (d->parentFrame())
 260         d->page->d->insideOpenCall = false;
 261 }
 262
 263 void QWebFrame::setHtml(const QString &html, const QUrl &baseUrl)
 264 {
 265     KURL kurl(baseUrl.toString());
 266     WebCore::ResourceRequest request(kurl);
 267     WTF::RefPtr<WebCore::SharedBuffer> data = new WebCore::SharedBuffer(reinterpret_cast<const uchar *>(html.unicode()), html.length() * 2);
 268     WebCore::SubstituteData substituteData(data, WebCore::String("text/html"), WebCore::String("utf-16"), kurl);
 269     d->frame->loader()->load(request, substituteData);
 270 }
 271
 272 void QWebFrame::setHtml(const QByteArray &html, const QUrl &baseUrl)
 273 {
 274     setContent(html, QString(), baseUrl);
 275 }
 276
 277 void QWebFrame::setContent(const QByteArray &data, const QString &mimeType, const QUrl &baseUrl)
 278 {
 279     KURL kurl(baseUrl.toString());
 280     WebCore::ResourceRequest request(kurl);
 281     WTF::RefPtr<WebCore::SharedBuffer> buffer = new WebCore::SharedBuffer(data.constData(), data.length());
 282     QString actualMimeType = mimeType;
 283     if (actualMimeType.isEmpty())
 284         actualMimeType = QLatin1String("text/html");
 285     WebCore::SubstituteData substituteData(buffer, WebCore::String(actualMimeType), WebCore::String(), kurl);
 286     d->frame->loader()->load(request, substituteData);
 287 }
 288
 289 QList<QWebFrame*> QWebFrame::childFrames() const
 290 {
 291     QList<QWebFrame*> rc;
 292     if (d->frame) {
 293         FrameTree *tree = d->frame->tree();
 294         for (Frame *child = tree->firstChild(); child; child = child->tree()->nextSibling()) {
 295             FrameLoader *loader = child->loader();
 296             FrameLoaderClientQt *client = static_cast<FrameLoaderClientQt*>(loader->client());
 297             if (client)
 298                 rc.append(client->webFrame());
 299         }
 300
 301     }
 302     return rc;
 303 }
 304
 305
 306 Qt::ScrollBarPolicy QWebFrame::verticalScrollBarPolicy() const
 307 {
 308     return (Qt::ScrollBarPolicy) d->frameView->vScrollbarMode();
 309 }
 310
 311 void QWebFrame::setVerticalScrollBarPolicy(Qt::ScrollBarPolicy policy)
 312 {
 313     Q_ASSERT((int)ScrollbarAuto == (int)Qt::ScrollBarAsNeeded);
 314     Q_ASSERT((int)ScrollbarAlwaysOff == (int)Qt::ScrollBarAlwaysOff);
 315     Q_ASSERT((int)ScrollbarAlwaysOn == (int)Qt::ScrollBarAlwaysOn);
 316     d->frameView->setVScrollbarMode((ScrollbarMode)policy);
 317 }
 318
 319 Qt::ScrollBarPolicy QWebFrame::horizontalScrollBarPolicy() const
 320 {
 321     return (Qt::ScrollBarPolicy) d->frameView->hScrollbarMode();
 322 }
 323
 324 void QWebFrame::setHorizontalScrollBarPolicy(Qt::ScrollBarPolicy policy)
 325 {
 326     d->frameView->setHScrollbarMode((ScrollbarMode)policy);
 327 }
 328
 329 void QWebFrame::render(QPainter *painter, const QRect &source)
 330 {
 331     if (!d->frameView || !d->frame->renderer())
 332         return;
 333
 334     layout();
 335
 336     GraphicsContext ctx(painter);
 337     d->frameView->paint(&ctx, source);
 338 }
 339
 340 void QWebFrame::layout()
 341 {
 342     if (!d->frameView)
 343         return;
 344
 345     d->frameView->layoutIfNeededRecursive();
 346 }
 347
 348 QPoint QWebFrame::pos() const
 349 {
 350     Q_ASSERT(d->frameView);
 351     return d->pos();
 352 }
 353
 354 QRect QWebFrame::geometry() const
 355 {
 356     Q_ASSERT(d->frameView);
 357     return d->frameView->frameGeometry();
 358 }
 359
 360 QString QWebFrame::evaluateJavaScript(const QString& scriptSource)
 361 {
 362     KJSProxy *proxy = d->frame->scriptProxy();
 363     QString rc;
 364     if (proxy) {
 365         KJS::JSValue *v = proxy->evaluate(String(), 0, scriptSource);
 366         if (v) {
 367             rc = String(v->toString(proxy->globalObject()->globalExec()));
 368         }
 369     }
 370     return rc;
 371 }
 372