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      1 /**
      2  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  *
     19  */
     20 
     21 #include "config.h"
     22 
     23 #if ENABLE(WML)
     24 #include "WMLPrevElement.h"
     25 
     26 #include "Page.h"
     27 #include "WMLCardElement.h"
     28 #include "WMLDocument.h"
     29 #include "WMLPageState.h"
     30 #include "WMLTimerElement.h"
     31 
     32 namespace WebCore {
     33 
     34 WMLPrevElement::WMLPrevElement(const QualifiedName& tagName, Document* doc)
     35     : WMLTaskElement(tagName, doc)
     36 {
     37 }
     38 
     39 WMLPrevElement::~WMLPrevElement()
     40 {
     41 }
     42 
     43 void WMLPrevElement::executeTask()
     44 {
     45     ASSERT(document()->isWMLDocument());
     46     WMLDocument* document = static_cast<WMLDocument*>(this->document());
     47 
     48     WMLPageState* pageState = wmlPageStateForDocument(document);
     49     if (!pageState)
     50         return;
     51 
     52     WMLCardElement* card = document->activeCard();
     53     if (!card)
     54         return;
     55 
     56     storeVariableState(pageState);
     57 
     58     // Stop the timer of the current card if it is active
     59     if (WMLTimerElement* eventTimer = card->eventTimer())
     60         eventTimer->stop();
     61 
     62     pageState->page()->goBack();
     63 }
     64 
     65 }
     66 
     67 #endif
     68