khtml Library API Documentation

kjavaappletviewer.cpp

00001 /* This file is part of the KDE project
00002  *
00003  * Copyright (C) 2003 Koos Vriezen <koos.vriezen@xs4all.nl>
00004  *
00005  * This library is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU Library General Public
00007  * License as published by the Free Software Foundation; either
00008  * version 2 of the License, or (at your option) any later version.
00009  *
00010  * This library is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * Library General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU Library General Public License
00016  * along with this library; see the file COPYING.LIB.  If not, write to
00017  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00018  * Boston, MA 02111-1307, USA.
00019  */
00020 #include <stdio.h>
00021 
00022 #ifdef KDE_USE_FINAL
00023 #undef Always
00024 #include <qdir.h>
00025 #endif
00026 #include <qtable.h>
00027 #include <qpair.h>
00028 #include <qguardedptr.h>
00029 
00030 #include <klibloader.h>
00031 #include <kaboutdata.h>
00032 #include <kstaticdeleter.h>
00033 #include <klocale.h>
00034 #include <kapplication.h>
00035 #include <kdebug.h>
00036 #include <kconfig.h>
00037 #include <kio/authinfo.h>
00038 #include <dcopclient.h>
00039 
00040 #include "kjavaappletwidget.h"
00041 #include "kjavaappletviewer.h"
00042 #include "kjavaappletserver.h"
00043 
00044 
00045 K_EXPORT_COMPONENT_FACTORY (kjavaappletviewer, KJavaAppletViewerFactory)
00046 
00047 KInstance *KJavaAppletViewerFactory::s_instance = 0;
00048 
00049 KJavaAppletViewerFactory::KJavaAppletViewerFactory () {
00050     s_instance = new KInstance ("KJavaAppletViewer");
00051 }
00052 
00053 KJavaAppletViewerFactory::~KJavaAppletViewerFactory () {
00054     delete s_instance;
00055 }
00056 
00057 KParts::Part *KJavaAppletViewerFactory::createPartObject
00058   (QWidget *wparent, const char *wname,
00059    QObject *parent, const char * name, const char *, const QStringList & args) {
00060     return new KJavaAppletViewer (wparent, wname, parent, name, args);
00061 }
00062 
00063 //-----------------------------------------------------------------------------
00064 
00065 class KJavaServerMaintainer;
00066 static KJavaServerMaintainer * serverMaintainer = 0;
00067 
00068 class KJavaServerMaintainer {
00069 public:
00070     KJavaServerMaintainer () { }
00071     ~KJavaServerMaintainer ();
00072 
00073     KJavaAppletContext * getContext (QObject*, const QString &);
00074     void releaseContext (QObject*, const QString &);
00075     void setServer (KJavaAppletServer * s);
00076 private:
00077     typedef QMap <QPair <QObject*, QString>, QPair <KJavaAppletContext*, int> >
00078             ContextMap;
00079     ContextMap m_contextmap;
00080     QGuardedPtr <KJavaAppletServer> server;
00081 };
00082 
00083 KJavaServerMaintainer::~KJavaServerMaintainer () {
00084     delete server;
00085 }
00086 
00087 KJavaAppletContext * KJavaServerMaintainer::getContext (QObject * w, const QString & doc) {
00088     ContextMap::key_type key = qMakePair (w, doc);
00089     ContextMap::iterator it = m_contextmap.find (key);
00090     if (it != m_contextmap.end ()) {
00091         (*it).second++;
00092         return (*it).first;
00093     }
00094     KJavaAppletContext * context = new KJavaAppletContext ();
00095     m_contextmap.insert (key, qMakePair(context, 1));
00096     return context;
00097 }
00098 
00099 void KJavaServerMaintainer::releaseContext (QObject * w, const QString & doc) {
00100     ContextMap::iterator it = m_contextmap.find (qMakePair (w, doc));
00101     if (it != m_contextmap.end () && --(*it).second <= 0) {
00102         kdDebug(6100) << "KJavaServerMaintainer::releaseContext" << endl;
00103         (*it).first->deleteLater ();
00104         m_contextmap.remove (it);
00105     }
00106 }
00107 
00108 inline void KJavaServerMaintainer::setServer (KJavaAppletServer * s) {
00109     if (!server)
00110         server = s;
00111 }
00112 
00113 static KStaticDeleter <KJavaServerMaintainer> serverMaintainerDeleter;
00114 
00115 //-----------------------------------------------------------------------------
00116 
00117 AppletParameterDialog::AppletParameterDialog (KJavaAppletWidget * parent)
00118     : KDialogBase (parent, "paramdialog", true, i18n ("Applet Parameters"),
00119                    KDialogBase::Close, KDialogBase::Close, true),
00120       m_appletWidget (parent) {
00121     KJavaApplet * applet = parent->applet ();
00122     table = new QTable (30, 2, this);
00123     table->setMinimumSize (QSize (600, 400));
00124     table->setColumnWidth (0, 200);
00125     table->setColumnWidth (1, 340);
00126     QHeader *header = table->horizontalHeader();
00127     header->setLabel (0, i18n ("Parameter"));
00128     header->setLabel (1, i18n ("Value"));
00129     QTableItem * tit = new QTableItem (table, QTableItem::Never, i18n("Class"));
00130     table->setItem (0, 0, tit);
00131     tit = new QTableItem(table, QTableItem::Always, applet->appletClass());
00132     table->setItem (0, 1, tit);
00133     tit = new QTableItem (table, QTableItem::Never, i18n ("Base URL"));
00134     table->setItem (1, 0, tit);
00135     tit = new QTableItem(table, QTableItem::Always, applet->baseURL());
00136     table->setItem (1, 1, tit);
00137     tit = new QTableItem (table, QTableItem::Never, i18n ("Archives"));
00138     table->setItem (2, 0, tit);
00139     tit = new QTableItem(table, QTableItem::Always, applet->archives());
00140     table->setItem (2, 1, tit);
00141     QMap<QString,QString>::iterator it = applet->getParams().begin ();
00142     for (int count = 2; it != applet->getParams().end (); ++it) {
00143         tit = new QTableItem (table, QTableItem::Always, it.key ());
00144         table->setItem (++count, 0, tit);
00145         tit = new QTableItem(table, QTableItem::Always, it.data ());
00146         table->setItem (count, 1, tit);
00147     }
00148     setMainWidget (table);
00149 }
00150 
00151 void AppletParameterDialog::slotClose () {
00152     table->selectCells (0, 0, 0, 0);
00153     KJavaApplet * applet = m_appletWidget->applet ();
00154     applet->setAppletClass (table->item (0, 1)->text ());
00155     applet->setBaseURL (table->item (1, 1)->text ());
00156     applet->setArchives (table->item (2, 1)->text ());
00157     for (int i = 3; i < table->numRows (); ++i) {
00158         if (table->item (i, 0) && table->item (i, 1) && !table->item (i, 0)->text ().isEmpty ())
00159             applet->setParameter (table->item (i, 0)->text (),
00160                                   table->item (i, 1)->text ());
00161     }
00162     hide ();
00163 }
00164 //-----------------------------------------------------------------------------
00165 
00166 class CoverWidget : public QWidget {
00167     KJavaAppletWidget * m_appletwidget;
00168 public:
00169     CoverWidget (QWidget *);
00170     ~CoverWidget () {}
00171     KJavaAppletWidget * appletWidget () const;
00172 protected:
00173     void resizeEvent (QResizeEvent * e);
00174 };
00175 
00176 inline CoverWidget::CoverWidget (QWidget * parent) : QWidget (parent) {
00177     m_appletwidget = new KJavaAppletWidget (this);
00178     setFocusProxy (m_appletwidget);
00179     hide ();
00180 }
00181 
00182 inline KJavaAppletWidget * CoverWidget::appletWidget () const {
00183     return m_appletwidget;
00184 }
00185 
00186 void CoverWidget::resizeEvent (QResizeEvent * e) {
00187     m_appletwidget->resize (e->size().width(), e->size().height());
00188 }
00189 
00190 //-----------------------------------------------------------------------------
00191 
00192 KJavaAppletViewer::KJavaAppletViewer (QWidget * wparent, const char *,
00193                  QObject * parent, const char * name, const QStringList & args)
00194  : KParts::ReadOnlyPart (parent, name),
00195    m_browserextension (new KJavaAppletViewerBrowserExtension (this)),
00196    m_liveconnect (new KJavaAppletViewerLiveConnectExtension (this)),
00197    m_closed (true)
00198 {
00199     if (!serverMaintainer) {
00200         serverMaintainerDeleter.setObject (serverMaintainer,
00201                                            new KJavaServerMaintainer);
00202     }
00203     m_view = new CoverWidget (wparent);
00204     QString classname, classid, codebase, khtml_codebase;
00205     int width = -1;
00206     int height = -1;
00207     KJavaApplet * applet = m_view->appletWidget()->applet ();
00208     QStringList::const_iterator it = args.begin ();
00209     for ( ; it != args.end (); ++it) {
00210         int equalPos = (*it).find("=");
00211         if (equalPos > 0) {
00212             QString name = (*it).left (equalPos).upper ();
00213             QString value = (*it).right ((*it).length () - equalPos - 1);
00214             if (value.at(0)=='\"')
00215                 value = value.right (value.length () - 1);
00216             if (value.at (value.length () - 1) == '\"')
00217                 value.truncate (value.length () - 1);
00218             kdDebug(6100) << "name=" << name << " value=" << value << endl;
00219             if (!name.isEmpty()) {
00220                 QString name_lower = name.lower ();
00221                 if (name == "__KHTML__PLUGINBASEURL") {
00222                     KURL url (value);
00223                     QString fn = url.fileName (false);
00224                     baseurl = fn.isEmpty () ?
00225                         value : value.left (value.length ()-fn.length ());
00226                 } else if (name == "__KHTML__CODEBASE")
00227                     khtml_codebase = value;
00228                 else if (name_lower == QString::fromLatin1("codebase") ||
00229                          name_lower == QString::fromLatin1("java_codebase")) {
00230                     if (!value.isEmpty ())
00231                         codebase = value;
00232                 } else if (name == "__KHTML__CLASSID")
00233                 //else if (name.lower()==QString::fromLatin1("classid"))
00234                     classid = value;
00235                 else if (name_lower == QString::fromLatin1("code") ||
00236                          name_lower == QString::fromLatin1("java_code") ||
00237                          name_lower == QString::fromLatin1("src"))
00238                     classname = value;
00239                 else if (name_lower == QString::fromLatin1("archive") ||
00240                          name_lower == QString::fromLatin1("java_archive") ||
00241                          name_lower.startsWith ("cache_archive"))
00242                     applet->setArchives (value);
00243                 else if (name_lower == QString::fromLatin1("name"))
00244                     applet->setAppletName (value);
00245                 else if (name_lower == QString::fromLatin1("width"))
00246                     width = value.toInt();
00247                 else if (name_lower == QString::fromLatin1("height"))
00248                     height = value.toInt();
00249                 else {
00250                     applet->setParameter (name, value);
00251                 }
00252             }
00253         }
00254     }
00255     if (!classid.isEmpty ()) {
00256         applet->setParameter ("CLSID", classid);
00257         kdDebug(6100) << "classid=" << classid << classid.startsWith("clsid:")<< endl;
00258         if (classid.startsWith ("clsid:"))
00259             // codeBase contains the URL to the plugin page
00260             khtml_codebase = baseurl;
00261         else if (classname.isEmpty () && classid.startsWith ("java:"))
00262             classname = classid.mid(5);
00263     }
00264     if (codebase.isEmpty ())
00265         codebase = khtml_codebase;
00266 
00267     if (width > 0 && height > 0) {
00268         m_view->resize (width, height);
00269         applet->setSize( QSize( width, height ) );
00270     }
00271     applet->setBaseURL (baseurl);
00272     // check codebase first
00273     KURL kbaseURL( baseurl );
00274     KURL newURL(kbaseURL, codebase);
00275     if (kapp->authorizeURLAction("redirect", KURL(baseurl), newURL))
00276         applet->setCodeBase (newURL.url());
00277     applet->setAppletClass (classname);
00278     KJavaAppletContext * cxt = serverMaintainer->getContext (parent, baseurl);
00279     applet->setAppletContext (cxt);
00280 
00281     KJavaAppletServer * server = cxt->getServer ();
00282 
00283     serverMaintainer->setServer (server);
00284 
00285     if (!server->usingKIO ()) {
00286         /* if this page needs authentication */
00287         KIO::AuthInfo info;
00288         QString errorMsg;
00289         QCString replyType;
00290         QByteArray params;
00291         QByteArray reply;
00292         KIO::AuthInfo authResult;
00293 
00294         //(void) dcopClient(); // Make sure to have a dcop client.
00295         info.url = baseurl;
00296         info.verifyPath = true;
00297 
00298         QDataStream stream(params, IO_WriteOnly);
00299         stream << info << m_view->topLevelWidget()->winId();
00300 
00301         if (!kapp->dcopClient ()->call( "kded", "kpasswdserver", "checkAuthInfo(KIO::AuthInfo, long int)", params, replyType, reply ) ) {
00302             kdWarning() << "Can't communicate with kded_kpasswdserver!" << endl;
00303         } else if ( replyType == "KIO::AuthInfo" ) {
00304             QDataStream stream2( reply, IO_ReadOnly );
00305             stream2 >> authResult;
00306             applet->setUser (authResult.username);
00307             applet->setPassword (authResult.password);
00308             applet->setAuthName (authResult.realmValue);
00309         }
00310     }
00311 
00312     /* install event filter for close events */
00313     if (wparent)
00314         wparent->topLevelWidget ()->installEventFilter (this);
00315 
00316     setInstance (KJavaAppletViewerFactory::instance ());
00317     KParts::Part::setWidget (m_view);
00318 
00319     connect (applet->getContext(), SIGNAL(appletLoaded()), this, SLOT(appletLoaded()));
00320     connect (applet->getContext(), SIGNAL(showDocument(const QString&, const QString&)), m_browserextension, SLOT(showDocument(const QString&, const QString&)));
00321     connect (applet->getContext(), SIGNAL(showStatus(const QString &)), this, SLOT(infoMessage(const QString &)));
00322     connect (applet, SIGNAL(jsEvent (const QStringList &)), m_liveconnect, SLOT(jsEvent (const QStringList &)));
00323 }
00324 
00325 bool KJavaAppletViewer::eventFilter (QObject *o, QEvent *e) {
00326     if (m_liveconnect->jsSessions () > 0) {
00327         switch (e->type()) {
00328             case QEvent::Destroy:
00329             case QEvent::Close:
00330             case QEvent::Quit:
00331                 return true;
00332             default:
00333                 break;
00334         }
00335     }
00336     return KParts::ReadOnlyPart::eventFilter(o,e);
00337 }
00338 
00339 KJavaAppletViewer::~KJavaAppletViewer () {
00340     m_view = 0L;
00341     serverMaintainer->releaseContext (parent(), baseurl);
00342 }
00343 
00344 bool KJavaAppletViewer::openURL (const KURL & url) {
00345     if (!m_view) return false;
00346     m_closed = false;
00347     KJavaAppletWidget * w = m_view->appletWidget ();
00348     KJavaApplet * applet = w->applet ();
00349     if (applet->isCreated ())
00350         applet->stop ();
00351     if (applet->appletClass ().isEmpty ()) {
00352         // preview without setting a class?
00353         if (applet->baseURL ().isEmpty ()) {
00354             applet->setAppletClass (url.fileName ());
00355             applet->setBaseURL (url.upURL ().url ());
00356         } else
00357             applet->setAppletClass (url.url ());
00358         AppletParameterDialog (w).exec ();
00359         applet->setSize (w->sizeHint());
00360     }
00361     // delay showApplet if size is unknown and m_view not shown
00362     if (applet->size().width() > 0 || m_view->isVisible())
00363         w->showApplet ();
00364     if (!applet->failed ())
00365         emit started (0L);
00366     return url.isValid ();
00367 }
00368 
00369 bool KJavaAppletViewer::closeURL () {
00370     kdDebug(6100) << "closeURL" << endl;
00371     m_closed = true;
00372     KJavaApplet * applet = m_view->appletWidget ()->applet ();
00373     if (applet->isCreated ())
00374         applet->stop ();
00375     applet->getContext()->getServer()->endWaitForReturnData();
00376     return true;
00377 }
00378 
00379 bool KJavaAppletViewer::appletAlive () const {
00380     return !m_closed && m_view &&
00381            m_view->appletWidget ()->applet () &&
00382            m_view->appletWidget ()->applet ()->isAlive ();
00383 }
00384 
00385 bool KJavaAppletViewer::openFile () {
00386     return false;
00387 }
00388 
00389 void KJavaAppletViewer::appletLoaded () {
00390     if (!m_view) return;
00391     KJavaApplet * applet = m_view->appletWidget ()->applet ();
00392     if (applet->isAlive() || applet->failed())
00393         emit completed();
00394 }
00395 
00396 void KJavaAppletViewer::infoMessage (const QString & msg) {
00397     m_browserextension->infoMessage(msg);
00398 }
00399 
00400 KAboutData* KJavaAppletViewer::createAboutData () {
00401     return new KAboutData("KJavaAppletViewer", I18N_NOOP("KDE Java Applet Plugin"), "1.0");
00402 }
00403 
00404 //---------------------------------------------------------------------
00405 
00406 KJavaAppletViewerBrowserExtension::KJavaAppletViewerBrowserExtension (KJavaAppletViewer * parent)
00407   : KParts::BrowserExtension (parent, "KJavaAppletViewer Browser Extension") {
00408 }
00409 
00410 void KJavaAppletViewerBrowserExtension::urlChanged (const QString & url) {
00411     emit setLocationBarURL (url);
00412 }
00413 
00414 void KJavaAppletViewerBrowserExtension::setLoadingProgress (int percentage) {
00415     emit loadingProgress (percentage);
00416 }
00417 
00418 void KJavaAppletViewerBrowserExtension::setURLArgs (const KParts::URLArgs & /*args*/) {
00419 }
00420 
00421 void KJavaAppletViewerBrowserExtension::saveState (QDataStream & stream) {
00422     KJavaApplet * applet = static_cast<KJavaAppletViewer*>(parent())->view()->appletWidget ()->applet ();
00423     stream << applet->appletClass();
00424     stream << applet->baseURL();
00425     stream << applet->archives();
00426     stream << applet->getParams().size ();
00427     QMap<QString,QString>::iterator it = applet->getParams().begin ();
00428     for ( ; it != applet->getParams().end (); ++it) {
00429         stream << it.key ();
00430         stream << it.data ();
00431     }
00432 }
00433 
00434 void KJavaAppletViewerBrowserExtension::restoreState (QDataStream & stream) {
00435     KJavaAppletWidget * w = static_cast<KJavaAppletViewer*>(parent())->view()->appletWidget();
00436     KJavaApplet * applet = w->applet ();
00437     QString key, val;
00438     int paramcount;
00439     stream >> val;
00440     applet->setAppletClass (val);
00441     stream >> val;
00442     applet->setBaseURL (val);
00443     stream >> val;
00444     applet->setArchives (val);
00445     stream >> paramcount;
00446     for (int i = 0; i < paramcount; ++i) {
00447         stream >> key;
00448         stream >> val;
00449         applet->setParameter (key, val);
00450         kdDebug(6100) << "restoreState key:" << key << " val:" << val << endl;
00451     }
00452     applet->setSize (w->sizeHint ());
00453     if (w->isVisible())
00454         w->showApplet ();
00455 }
00456 
00457 void KJavaAppletViewerBrowserExtension::showDocument (const QString & doc,
00458                                                       const QString & frame) {
00459     KURL url (doc);
00460     KParts::URLArgs args;
00461     args.frameName = frame;
00462     emit openURLRequest (url, args);
00463 }
00464 
00465 //-----------------------------------------------------------------------------
00466 
00467 KJavaAppletViewerLiveConnectExtension::KJavaAppletViewerLiveConnectExtension(KJavaAppletViewer * parent)
00468     : KParts::LiveConnectExtension (parent), m_viewer (parent) {
00469 }
00470 
00471 bool KJavaAppletViewerLiveConnectExtension::get (
00472         const unsigned long objid, const QString & name,
00473         KParts::LiveConnectExtension::Type & type,
00474         unsigned long & rid, QString & value)
00475 {
00476     if (!m_viewer->appletAlive ())
00477         return false;
00478     QStringList args, ret_args;
00479     KJavaApplet * applet = m_viewer->view ()->appletWidget ()->applet ();
00480     args.append (QString::number (applet->appletId ()));
00481     args.append (QString::number ((int) objid));
00482     args.append (name);
00483     m_jssessions++;
00484     bool ret = applet->getContext()->getMember (args, ret_args);
00485     m_jssessions--;
00486     if (!ret || ret_args.count() != 3) return false;
00487     bool ok;
00488     int itype = ret_args[0].toInt (&ok);
00489     if (!ok || itype < 0) return false;
00490     type = (KParts::LiveConnectExtension::Type) itype;
00491     rid = ret_args[1].toInt (&ok);
00492     if (!ok) return false;
00493     value = ret_args[2];
00494     return true;
00495 }
00496 
00497 bool KJavaAppletViewerLiveConnectExtension::put(const unsigned long objid, const QString & name, const QString & value)
00498 {
00499     if (!m_viewer->appletAlive ())
00500         return false;
00501     QStringList args;
00502     KJavaApplet * applet = m_viewer->view ()->appletWidget ()->applet ();
00503     args.append (QString::number (applet->appletId ()));
00504     args.append (QString::number ((int) objid));
00505     args.append (name);
00506     args.append (value);
00507     m_jssessions++;
00508     bool ret = applet->getContext()->putMember (args);
00509     m_jssessions--;
00510     return ret;
00511 }
00512 
00513 bool KJavaAppletViewerLiveConnectExtension::call( const unsigned long objid, const QString & func, const QStringList & fargs, KParts::LiveConnectExtension::Type & type, unsigned long & retobjid, QString & value )
00514 {
00515     if (!m_viewer->appletAlive ())
00516         return false;
00517     KJavaApplet * applet = m_viewer->view ()->appletWidget ()->applet ();
00518     QStringList args, ret_args;
00519     args.append (QString::number (applet->appletId ()));
00520     args.append (QString::number ((int) objid));
00521     args.append (func);
00522     for (QStringList::const_iterator it=fargs.begin(); it != fargs.end(); ++it)
00523         args.append(*it);
00524     m_jssessions++;
00525     bool ret = applet->getContext()->callMember (args, ret_args);
00526     m_jssessions--;
00527     if (!ret || ret_args.count () != 3) return false;
00528     bool ok;
00529     int itype = ret_args[0].toInt (&ok);
00530     if (!ok || itype < 0) return false;
00531     type = (KParts::LiveConnectExtension::Type) itype;
00532     retobjid = ret_args[1].toInt (&ok);
00533     if (!ok) return false;
00534     value = ret_args[2];
00535     return true;
00536 }
00537 
00538 void KJavaAppletViewerLiveConnectExtension::unregister(const unsigned long objid)
00539 {
00540     if (!m_viewer->view () || !m_viewer->view ())
00541         return;
00542     KJavaApplet * applet = m_viewer->view ()->appletWidget ()->applet ();
00543     if (!applet || objid == 0) {
00544         // typically a gc after a function call on the applet,
00545         // no need to send to the jvm
00546         return;
00547     }
00548     QStringList args;
00549     args.append (QString::number (applet->appletId ()));
00550     args.append (QString::number ((int) objid));
00551     applet->getContext()->derefObject (args);
00552 }
00553 
00554 void KJavaAppletViewerLiveConnectExtension::jsEvent (const QStringList & args) {
00555     if (args.count () < 2 || !m_viewer->appletAlive ())
00556         return;
00557     bool ok;
00558     unsigned long objid = args[0].toInt(&ok);
00559     QString event = args[1];
00560     KParts::LiveConnectExtension::ArgList arglist;
00561     for (unsigned i = 2; i < args.count(); i += 2)
00562         // take a deep breath here
00563         arglist.push_back(KParts::LiveConnectExtension::ArgList::value_type((KParts::LiveConnectExtension::Type) args[i].toInt(), args[i+1]));
00564     emit partEvent (objid, event, arglist);
00565 }
00566 
00567 int KJavaAppletViewerLiveConnectExtension::m_jssessions = 0;
00568 
00569 //-----------------------------------------------------------------------------
00570 
00571 #include "kjavaappletviewer.moc"
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