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tdelibs/khtml/ecma/kjs_binding.cpp

468 lines
14 KiB

// -*- c-basic-offset: 2 -*-
/*
* This file is part of the KDE libraries
* Copyright (C) 1999-2003 Harri Porten (porten@kde.org)
* Copyright (C) 2001-2003 David Faure (faure@kde.org)
* Copyright (C) 2003 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "kjs_binding.h"
#include "kjs_dom.h"
#include "dom/dom_exception.h"
#include "dom/dom2_range.h"
#include "xml/dom2_eventsimpl.h"
#include "khtmlpart_p.h"
#include <kdebug.h>
#include <kparts/browserextension.h>
#include <assert.h>
using namespace KJS;
/* TODO:
* The catch all (...) clauses below shouldn't be necessary.
* But they helped to view for example www.faz.net in an stable manner.
* Those unknown exceptions should be treated as severe bugs and be fixed.
*
* these may be CSS exceptions - need to check - pmk
*/
Value DOMObject::get(ExecState *exec, const Identifier &p) const
{
Value result;
try {
result = tryGet(exec,p);
}
catch (DOM::DOMException e) {
// ### translate code into readable string ?
// ### oh, and s/QString/i18n or I18N_NOOP (the code in kjs uses I18N_NOOP... but where is it translated ?)
// and where does it appear to the user ?
Object err = Error::create(exec, GeneralError, TQString(TQString("DOM exception %1").arg(e.code)).local8Bit());
exec->setException( err );
result = Undefined();
}
catch (...) {
kdError(6070) << "Unknown exception in DOMObject::get()" << endl;
result = String("Unknown exception");
}
return result;
}
void DOMObject::put(ExecState *exec, const Identifier &propertyName,
const Value &value, int attr)
{
try {
tryPut(exec, propertyName, value, attr);
}
catch (DOM::DOMException e) {
Object err = Error::create(exec, GeneralError, TQString(TQString("DOM exception %1").arg(e.code)).local8Bit());
exec->setException(err);
}
catch (...) {
kdError(6070) << "Unknown exception in DOMObject::put()" << endl;
}
}
void DOMObject::tryPut(ExecState *exec, const Identifier &propertyName,
const Value& value, int attr)
{
static_cast<ScriptInterpreter*>(exec->dynamicInterpreter())->customizedDOMObject(this);
ObjectImp::put(exec,propertyName,value,attr);
}
UString DOMObject::toString(ExecState *) const
{
return "[object " + className() + "]";
}
Boolean DOMObject::hasInstance(ExecState *exec, const Value &value)
{
if (value.type() != ObjectType)
return Boolean(false);
Value prot = get(exec,prototypePropertyName);
if (prot.type() != ObjectType && prot.type() != NullType) {
Object err = Error::create(exec, TypeError, "Invalid prototype encountered "
"in instanceof operation.");
exec->setException(err);
return Boolean(false);
}
Object v = Object(static_cast<ObjectImp*>(value.imp()));
while ((v = Object::dynamicCast(v.prototype())).imp()) {
if (v.imp() == prot.imp())
return Boolean(true);
}
return Boolean(false);
}
Value DOMFunction::get(ExecState *exec, const Identifier &propertyName) const
{
try {
return tryGet(exec, propertyName);
}
catch (DOM::DOMException e) {
Object err = Error::create(exec, GeneralError, TQString(TQString("DOM exception %1").arg(e.code)).local8Bit());
exec->setException(err);
return Undefined();
}
catch (...) {
kdError(6070) << "Unknown exception in DOMFunction::get()" << endl;
return String("Unknown exception");
}
}
Value DOMFunction::call(ExecState *exec, Object &thisObj, const List &args)
{
try {
return tryCall(exec, thisObj, args);
}
// pity there's no way to distinguish between these in JS code
// ### Look into setting prototypes of these & the use of instanceof so the exception
// type can be determined. See what other browsers do.
catch (DOM::DOMException e) {
Object err = Error::create(exec, GeneralError, TQString(TQString("DOM Exception %1").arg(e.code)).local8Bit());
err.put(exec, "code", Number(e.code));
exec->setException(err);
return Undefined();
}
catch (DOM::RangeException e) {
Object err = Error::create(exec, GeneralError, TQString(TQString("DOM Range Exception %1").arg(e.code)).local8Bit());
err.put(exec, "code", Number(e.code));
exec->setException(err);
return Undefined();
}
catch (DOM::CSSException e) {
Object err = Error::create(exec, GeneralError, TQString(TQString("CSS Exception %1").arg(e.code)).local8Bit());
err.put(exec, "code", Number(e.code));
exec->setException(err);
return Undefined();
}
catch (DOM::EventException e) {
Object err = Error::create(exec, GeneralError, TQString(TQString("DOM Event Exception %1").arg(e.code)).local8Bit());
err.put(exec, "code", Number(e.code));
exec->setException(err);
return Undefined();
}
catch (...) {
kdError(6070) << "Unknown exception in DOMFunction::call()" << endl;
Object err = Error::create(exec, GeneralError, "Unknown exception");
exec->setException(err);
return Undefined();
}
}
typedef TQPtrList<ScriptInterpreter> InterpreterList;
static InterpreterList *interpreterList;
ScriptInterpreter::ScriptInterpreter( const Object &global, khtml::ChildFrame* frame )
: Interpreter( global ), m_frame( frame ), m_domObjects(1021),
m_evt( 0L ), m_inlineCode(false), m_timerCallback(false)
{
#ifdef KJS_VERBOSE
kdDebug(6070) << "ScriptInterpreter::ScriptInterpreter " << this << " for part=" << m_frame << endl;
#endif
if ( !interpreterList )
interpreterList = new InterpreterList;
interpreterList->append( this );
}
ScriptInterpreter::~ScriptInterpreter()
{
#ifdef KJS_VERBOSE
kdDebug(6070) << "ScriptInterpreter::~ScriptInterpreter " << this << " for part=" << m_frame << endl;
#endif
assert( interpreterList && interpreterList->contains( this ) );
interpreterList->remove( this );
if ( interpreterList->isEmpty() ) {
delete interpreterList;
interpreterList = 0;
}
}
void ScriptInterpreter::forgetDOMObject( void* objectHandle )
{
if( !interpreterList ) return;
TQPtrListIterator<ScriptInterpreter> it( *interpreterList );
while ( it.current() ) {
(*it)->deleteDOMObject( objectHandle );
++it;
}
}
void ScriptInterpreter::mark()
{
Interpreter::mark();
#ifdef KJS_VERBOSE
kdDebug(6070) << "ScriptInterpreter::mark " << this << " marking " << m_customizedDomObjects.count() << " DOM objects" << endl;
#endif
TQPtrDictIterator<void> it( m_customizedDomObjects );
for( ; it.current(); ++it )
static_cast<DOMObject*>(it.currentKey())->mark();
}
KParts::ReadOnlyPart* ScriptInterpreter::part() const {
return m_frame->m_part;
}
bool ScriptInterpreter::isWindowOpenAllowed() const
{
if ( m_evt )
{
int id = m_evt->handle()->id();
bool eventOk = ( // mouse events
id == DOM::EventImpl::CLICK_EVENT ||
id == DOM::EventImpl::MOUSEUP_EVENT || id == DOM::EventImpl::MOUSEDOWN_EVENT ||
id == DOM::EventImpl::KHTML_ECMA_CLICK_EVENT || id == DOM::EventImpl::KHTML_ECMA_DBLCLICK_EVENT ||
// keyboard events
id == DOM::EventImpl::KEYDOWN_EVENT || id == DOM::EventImpl::KEYPRESS_EVENT ||
id == DOM::EventImpl::KEYUP_EVENT ||
// other accepted events
id == DOM::EventImpl::SELECT_EVENT || id == DOM::EventImpl::CHANGE_EVENT ||
id == DOM::EventImpl::SUBMIT_EVENT );
kdDebug(6070) << "Window.open, smart policy: id=" << id << " eventOk=" << eventOk << endl;
if (eventOk)
return true;
} else // no event
{
if ( m_inlineCode && !m_timerCallback )
{
// This is the <a href="javascript:window.open('...')> case -> we let it through
return true;
kdDebug(6070) << "Window.open, smart policy, no event, inline code -> ok" << endl;
}
else // This is the <script>window.open(...)</script> case or a timer callback -> block it
kdDebug(6070) << "Window.open, smart policy, no event, <script> tag -> refused" << endl;
}
return false;
}
UString::UString(const TQString &d)
{
unsigned int len = d.length();
UChar *dat = new UChar[len];
memcpy(dat, d.tqunicode(), len * sizeof(UChar));
rep = UString::Rep::create(dat, len);
}
UString::UString(const DOM::DOMString &d)
{
if (d.isNull()) {
// we do a conversion here as null DOMStrings shouldn't cross
// the boundary to kjs. They should either be empty strings
// or explicitly converted to KJS::Null via getString().
attach(&Rep::empty);
return;
}
unsigned int len = d.length();
UChar *dat = new UChar[len];
memcpy(dat, d.tqunicode(), len * sizeof(UChar));
rep = UString::Rep::create(dat, len);
}
DOM::DOMString UString::string() const
{
return DOM::DOMString((TQChar*) data(), size());
}
TQString UString::qstring() const
{
return TQString((TQChar*) data(), size());
}
TQConstString UString::qconststring() const
{
return TQConstString((TQChar*) data(), size());
}
DOM::DOMString Identifier::string() const
{
return DOM::DOMString((TQChar*) data(), size());
}
TQString Identifier::qstring() const
{
return TQString((TQChar*) data(), size());
}
DOM::Node KJS::toNode(const Value& val)
{
Object obj = Object::dynamicCast(val);
if (!obj.isValid() || !obj.inherits(&DOMNode::info))
return DOM::Node();
const DOMNode *dobj = static_cast<const DOMNode*>(obj.imp());
return dobj->toNode();
}
Value KJS::getString(DOM::DOMString s)
{
if (s.isNull())
return Null();
else
return String(s);
}
TQVariant KJS::ValueToVariant(ExecState* exec, const Value &val) {
TQVariant res;
switch (val.type()) {
case BooleanType:
res = TQVariant(val.toBoolean(exec), 0);
break;
case NumberType:
res = TQVariant(val.toNumber(exec));
break;
case StringType:
res = TQVariant(val.toString(exec).qstring());
break;
default:
// everything else will be 'invalid'
break;
}
return res;
}
class EmbedLiveConnect : public ObjectImp
{
friend Value KJS::getLiveConnectValue(KParts::LiveConnectExtension *lc, const TQString & name, const int type, const TQString & value, int id);
EmbedLiveConnect(KParts::LiveConnectExtension *lc, UString n, KParts::LiveConnectExtension::Type t, int id);
public:
~EmbedLiveConnect();
virtual Value get(ExecState *, const Identifier & prop) const;
virtual void put(ExecState * exec, const Identifier &prop, const Value & value, int=None);
virtual Value call(ExecState * exec, Object &, const List &args);
virtual bool implementsCall() const;
virtual bool toBoolean(ExecState *) const;
virtual Value toPrimitive(ExecState *exec, Type) const;
virtual UString toString(ExecState *) const;
private:
EmbedLiveConnect(const EmbedLiveConnect &);
TQGuardedPtr<KParts::LiveConnectExtension> m_liveconnect;
UString name;
KParts::LiveConnectExtension::Type objtype;
unsigned long objid;
};
Value KJS::getLiveConnectValue(KParts::LiveConnectExtension *lc, const TQString & name, const int type, const TQString & value, int id)
{
KParts::LiveConnectExtension::Type t=(KParts::LiveConnectExtension::Type)type;
switch(t) {
case KParts::LiveConnectExtension::TypeBool: {
bool ok;
int i = value.toInt(&ok);
if (ok)
return Boolean(i);
return Boolean(!strcasecmp(value.latin1(), "true"));
}
case KParts::LiveConnectExtension::TypeObject:
case KParts::LiveConnectExtension::TypeFunction:
return Value(new EmbedLiveConnect(lc, name, t, id));
case KParts::LiveConnectExtension::TypeNumber: {
bool ok;
int i = value.toInt(&ok);
if (ok)
return Number(i);
else
return Number(value.toDouble(&ok));
}
case KParts::LiveConnectExtension::TypeString:
return String(value);
case KParts::LiveConnectExtension::TypeVoid:
default:
return Undefined();
}
}
/* only with gcc > 3.4 KDE_NO_EXPORT */
EmbedLiveConnect::EmbedLiveConnect(KParts::LiveConnectExtension *lc, UString n, KParts::LiveConnectExtension::Type t, int id)
: m_liveconnect (lc), name(n), objtype(t), objid(id)
{}
/* only with gcc > 3.4 KDE_NO_EXPORT */
EmbedLiveConnect::~EmbedLiveConnect() {
if (m_liveconnect)
m_liveconnect->unregister(objid);
}
KDE_NO_EXPORT
Value EmbedLiveConnect::get(ExecState *, const Identifier & prop) const
{
if (m_liveconnect) {
KParts::LiveConnectExtension::Type rettype;
TQString retval;
unsigned long retobjid;
if (m_liveconnect->get(objid, prop.qstring(), rettype, retobjid, retval))
return getLiveConnectValue(m_liveconnect, prop.qstring(), rettype, retval, retobjid);
}
return Undefined();
}
KDE_NO_EXPORT
void EmbedLiveConnect::put(ExecState * exec, const Identifier &prop, const Value & value, int)
{
if (m_liveconnect)
m_liveconnect->put(objid, prop.qstring(), value.toString(exec).qstring());
}
KDE_NO_EXPORT
bool EmbedLiveConnect::implementsCall() const {
return objtype == KParts::LiveConnectExtension::TypeFunction;
}
KDE_NO_EXPORT
Value EmbedLiveConnect::call(ExecState *exec, Object&, const List &args)
{
if (m_liveconnect) {
TQStringList qargs;
for (ListIterator i = args.begin(); i != args.end(); ++i)
qargs.append((*i).toString(exec).qstring());
KParts::LiveConnectExtension::Type rtype;
TQString rval;
unsigned long robjid;
if (m_liveconnect->call(objid, name.qstring(), qargs, rtype, robjid, rval))
return getLiveConnectValue(m_liveconnect, name.qstring(), rtype, rval, robjid);
}
return Undefined();
}
KDE_NO_EXPORT
bool EmbedLiveConnect::toBoolean(ExecState *) const {
return true;
}
KDE_NO_EXPORT
Value EmbedLiveConnect::toPrimitive(ExecState *exec, Type) const {
return String(toString(exec));
}
KDE_NO_EXPORT
UString EmbedLiveConnect::toString(ExecState *) const {
TQString str;
const char *type = objtype == KParts::LiveConnectExtension::TypeFunction ? "Function" : "Object";
str.sprintf("[object %s ref=%d]", type, (int) objid);
return UString(str);
}