khtmlview.cpp.orig

konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版本源码包.

    {
        m_part->xmlDocImpl()->prepareMouseEvent( false, xm, ym, &mev );

        swallowEvent = dispatchMouseEvent(EventImpl::MOUSEUP_EVENT,mev.innerNode.handle(),mev.innerNonSharedNode.handle(),true,
                                          d->clickCount,_mouse,false,DOM::NodeImpl::MouseRelease);

        if (d->clickCount > 0 &&
            QPoint(d->clickX-xm,d->clickY-ym).manhattanLength() <= QApplication::startDragDistance()) {
            QMouseEvent me(d->isDoubleClick ? QEvent::MouseButtonDblClick : QEvent::MouseButtonRelease,
                           _mouse->pos(), _mouse->button(), _mouse->state());
            dispatchMouseEvent(EventImpl::CLICK_EVENT, mev.innerNode.handle(),mev.innerNonSharedNode.handle(),true,
                               d->clickCount, &me, true, DOM::NodeImpl::MouseRelease);
        }

        DOM::NodeImpl* fn = m_part->xmlDocImpl()->focusNode();
        if (fn && fn != mev.innerNode.handle() &&
            fn->renderer() && fn->renderer()->isWidget() &&
            _mouse->button() != MidButton) {
            forwardPeripheralEvent(static_cast<khtml::RenderWidget*>(fn->renderer()), _mouse, xm, ym);
        }

        khtml::RenderObject* r = mev.innerNode.handle() ? mev.innerNode.handle()->renderer() : 0;
        if (r && r->isWidget())
            _mouse->ignore();
    }

    if (!swallowEvent) {
	khtml::MouseReleaseEvent event( _mouse, xm, ym, mev.url, mev.target, mev.innerNode );
	QApplication::sendEvent( m_part, &event );
    }
}

// returns true if event should be swallowed
bool KHTMLView::dispatchKeyEvent( QKeyEvent *_ke )
{
    if (!m_part->xmlDocImpl())
        return false;
    // Pressing and releasing a key should generate keydown, keypress and keyup events
    // Holding it down should generated keydown, keypress (repeatedly) and keyup events
    // The problem here is that Qt generates two autorepeat events (keyrelease+keypress)
    // for autorepeating, while DOM wants only one autorepeat event (keypress), so one
    // of the Qt events shouldn't be passed to DOM, but it should be still filtered
    // out if DOM would filter the autorepeat event. Additional problem is that Qt keyrelease
    // events don't have text() set (Qt bug?), so DOM often would ignore the keypress event
    // if it was created using Qt keyrelease, but Qt autorepeat keyrelease comes
    // before Qt autorepeat keypress (i.e. problem whether to filter it out or not).
    // The solution is to filter out and postpone the Qt autorepeat keyrelease until
    // the following Qt keypress event comes. If DOM accepts the DOM keypress event,
    // the postponed event will be simply discarded. If not, it will be passed to keyPressEvent()
    // again, and here it will be ignored.
    //
    //  Qt:      Press      | Release(autorepeat) Press(autorepeat) etc. |   Release
    //  DOM:   Down + Press |      (nothing)           Press             |     Up

    // It's also possible to get only Releases. E.g. the release of alt-tab,
    // or when the keypresses get captured by an accel.

    if( _ke == d->postponed_autorepeat ) // replayed event
    {
        return false;
    }

    if( _ke->type() == QEvent::KeyPress )
    {
        if( !_ke->isAutoRepeat())
        {
            bool ret = dispatchKeyEventHelper( _ke, false ); // keydown
            // don't send keypress even if keydown was blocked, like IE (and unlike Mozilla)
            if( !ret && dispatchKeyEventHelper( _ke, true )) // keypress
                ret = true;
            return ret;
        }
        else // autorepeat
        {
            bool ret = dispatchKeyEventHelper( _ke, true ); // keypress
            if( !ret && d->postponed_autorepeat )
                keyPressEvent( d->postponed_autorepeat );
            delete d->postponed_autorepeat;
            d->postponed_autorepeat = NULL;
            return ret;
        }
    }
    else // QEvent::KeyRelease
    {
        // Discard postponed "autorepeat key-release" events that didn't see
        // a keypress after them (e.g. due to QAccel)
        if ( d->postponed_autorepeat ) {
            delete d->postponed_autorepeat;
            d->postponed_autorepeat = 0;
        }

        if( !_ke->isAutoRepeat()) {
            return dispatchKeyEventHelper( _ke, false ); // keyup
        }
        else
        {
            d->postponed_autorepeat = new QKeyEvent( _ke->type(), _ke->key(), _ke->ascii(), _ke->state(),
                _ke->text(), _ke->isAutoRepeat(), _ke->count());
            if( _ke->isAccepted())
                d->postponed_autorepeat->accept();
            else
                d->postponed_autorepeat->ignore();
            return true;
        }
    }
}

// returns true if event should be swallowed
bool KHTMLView::dispatchKeyEventHelper( QKeyEvent *_ke, bool keypress )
{
    DOM::NodeImpl* keyNode = m_part->xmlDocImpl()->focusNode();
    if (keyNode) {
        return keyNode->dispatchKeyEvent(_ke, keypress);
    } else { // no focused node, send to document
        return m_part->xmlDocImpl()->dispatchKeyEvent(_ke, keypress);
    }
}

void KHTMLView::keyPressEvent( QKeyEvent *_ke )
{
#ifndef KHTML_NO_TYPE_AHEAD_FIND
	if(d->typeAheadActivated)
	{
		// type-ahead find aka find-as-you-type
		if(_ke->key() == Key_BackSpace)
		{
			d->findString = d->findString.left(d->findString.length() - 1);

			if(!d->findString.isEmpty())
			{
				findAhead(false);
			}
			else
			{
				findTimeout();
			}

			d->timer.start(3000, true);
			_ke->accept();
			return;
		}
		else if(_ke->key() == Key_Escape)
		{
			findTimeout();

			_ke->accept();
			return;
		}
		else if(_ke->key() == Key_Space || !_ke->text().stripWhiteSpace().isEmpty())
		{
			d->findString += _ke->text();

			findAhead(true);

			d->timer.start(3000, true);
			_ke->accept();
			return;
		}
	}
#endif // KHTML_NO_TYPE_AHEAD_FIND

#ifndef KHTML_NO_CARET
    if (m_part->isEditable() || m_part->isCaretMode()
        || (m_part->xmlDocImpl() && m_part->xmlDocImpl()->focusNode()
	    && m_part->xmlDocImpl()->focusNode()->contentEditable())) {
      d->caretViewContext()->keyReleasePending = true;
      caretKeyPressEvent(_ke);
      return;
    }
#endif // KHTML_NO_CARET

    // If CTRL was hit, be prepared for access keys
    if (d->accessKeysEnabled && _ke->key() == Key_Control && _ke->state()==0 && !d->accessKeysActivated)
    {
        d->accessKeysPreActivate=true;
        _ke->accept();
        return;
    }

    if (_ke->key() == Key_Shift && _ke->state()==0)
	    d->scrollSuspendPreActivate=true;

    // accesskey handling needs to be done before dispatching, otherwise e.g. lineedits
    // may eat the event

    if (d->accessKeysEnabled && d->accessKeysActivated)
    {
        int state = ( _ke->state() & ( ShiftButton | ControlButton | AltButton | MetaButton ));
        if ( state==0 || state==ShiftButton) {
	if (_ke->key() != Key_Shift) accessKeysTimeout();
        handleAccessKey( _ke );
        _ke->accept();
        return;
    	}
	accessKeysTimeout();
    }

    if ( dispatchKeyEvent( _ke )) {
        // If either keydown or keypress was accepted by a widget, or canceled by JS, stop here.
        _ke->accept();
        return;
    }

    int offs = (clipper()->height() < 30) ? clipper()->height() : 30;
    if (_ke->state() & Qt::ShiftButton)
      switch(_ke->key())
        {
        case Key_Space:
            if ( d->vmode == QScrollView::AlwaysOff )
                _ke->accept();
            else {
                scrollBy( 0, -clipper()->height() + offs );
                if(d->scrollSuspended)
                    d->newScrollTimer(this, 0);
            }
            break;

        case Key_Down:
        case Key_J:
            d->adjustScroller(this, KHTMLViewPrivate::ScrollDown, KHTMLViewPrivate::ScrollUp);
            break;

        case Key_Up:
        case Key_K:
            d->adjustScroller(this, KHTMLViewPrivate::ScrollUp, KHTMLViewPrivate::ScrollDown);
            break;

        case Key_Left:
        case Key_H:
            d->adjustScroller(this, KHTMLViewPrivate::ScrollLeft, KHTMLViewPrivate::ScrollRight);
            break;

        case Key_Right:
        case Key_L:
            d->adjustScroller(this, KHTMLViewPrivate::ScrollRight, KHTMLViewPrivate::ScrollLeft);
            break;
        }
    else
        switch ( _ke->key() )
        {
        case Key_Down:
        case Key_J:
            if ( d->vmode == QScrollView::AlwaysOff )
                _ke->accept();
            else {
                if (!d->scrollTimerId || d->scrollSuspended)
                    scrollBy( 0, 10 );
                if (d->scrollTimerId)
                    d->newScrollTimer(this, 0);
            }
            break;

        case Key_Space:
        case Key_Next:
            if ( d->vmode == QScrollView::AlwaysOff )
                _ke->accept();
            else {
                scrollBy( 0, clipper()->height() - offs );
                if(d->scrollSuspended)
                    d->newScrollTimer(this, 0);
            }
            break;

        case Key_Up:
        case Key_K:
            if ( d->vmode == QScrollView::AlwaysOff )
                _ke->accept();
            else {
                if (!d->scrollTimerId || d->scrollSuspended)
                    scrollBy( 0, -10 );
                if (d->scrollTimerId)
                    d->newScrollTimer(this, 0);
            }
            break;

        case Key_Prior:
            if ( d->vmode == QScrollView::AlwaysOff )
                _ke->accept();
            else {
                scrollBy( 0, -clipper()->height() + offs );
                if(d->scrollSuspended)
                    d->newScrollTimer(this, 0);
            }
            break;
        case Key_Right:
        case Key_L:
            if ( d->hmode == QScrollView::AlwaysOff )
                _ke->accept();
            else {
                if (!d->scrollTimerId || d->scrollSuspended)
                    scrollBy( 10, 0 );
                if (d->scrollTimerId)
                    d->newScrollTimer(this, 0);
            }
            break;
        case Key_Left:
        case Key_H:
            if ( d->hmode == QScrollView::AlwaysOff )
                _ke->accept();
            else {
                if (!d->scrollTimerId || d->scrollSuspended)
                    scrollBy( -10, 0 );
                if (d->scrollTimerId)
                    d->newScrollTimer(this, 0);
            }
            break;
        case Key_Enter:
        case Key_Return:
	    // ### FIXME:
	    // or even better to HTMLAnchorElementImpl::event()
            if (m_part->xmlDocImpl()) {
		NodeImpl *n = m_part->xmlDocImpl()->focusNode();
		if (n)
		    n->setActive();
	    }
            break;
        case Key_Home:
            if ( d->vmode == QScrollView::AlwaysOff )
                _ke->accept();
            else {
                setContentsPos( 0, 0 );
                if(d->scrollSuspended)
                    d->newScrollTimer(this, 0);
            }
            break;
        case Key_End:
            if ( d->vmode == QScrollView::AlwaysOff )
                _ke->accept();
            else {
                setContentsPos( 0, contentsHeight() - visibleHeight() );
                if(d->scrollSuspended)
                    d->newScrollTimer(this, 0);
            }
            break;
        case Key_Shift:
            // what are you doing here?
	    _ke->ignore();
            return;
        default:
            if (d->scrollTimerId)
                d->newScrollTimer(this, 0);
	    _ke->ignore();
            return;
        }

    _ke->accept();
}

void KHTMLView::findTimeout()
{
#ifndef KHTML_NO_TYPE_AHEAD_FIND
	d->typeAheadActivated = false;
	d->findString = "";
	m_part->setStatusBarText(i18n("Find stopped."), KHTMLPart::BarDefaultText);
	m_part->enableFindAheadActions( true );
#endif // KHTML_NO_TYPE_AHEAD_FIND
}

#ifndef KHTML_NO_TYPE_AHEAD_FIND
void KHTMLView::startFindAhead( bool linksOnly )
{
	if( linksOnly )
	{
		d->findLinksOnly = true;
		m_part->setStatusBarText(i18n("Starting -- find links as you type"),
		                         KHTMLPart::BarDefaultText);
	}
	else
	{
		d->findLinksOnly = false;
		m_part->setStatusBarText(i18n("Starting -- find text as you type"),
		                         KHTMLPart::BarDefaultText);
	}

	m_part->findTextBegin();
	d->typeAheadActivated = true;
        // disable, so that the shortcut ( / or ' by default ) doesn't interfere
	m_part->enableFindAheadActions( false );
	d->timer.start(3000, true);
}

void KHTMLView::findAhead(bool increase)
{
	QString status;

	if(d->findLinksOnly)
	{
		m_part->findText(d->findString, KHTMLPart::FindNoPopups |
		                 KHTMLPart::FindLinksOnly, this);
		if(m_part->findTextNext())
		{
			status = i18n("Link found: \"%1\".");
		}
		else
		{
			if(increase) KNotifyClient::beep();
			status = i18n("Link not found: \"%1\".");
		}
	}
	else
	{
		m_part->findText(d->findString, KHTMLPart::FindNoPopups, this);
		if(m_part->findTextNext())
		{
			status = i18n("Text found: \"%1\".");
		}
		else
		{
			if(increase) KNotifyClient::beep();
			status = i18n("Text not found: \"%1\".");
		}