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 "BackForwardController.h"
27#include "Page.h"
28#include "WMLCardElement.h"
29#include "WMLDocument.h"
30#include "WMLPageState.h"
31#include "WMLTimerElement.h"
32
33namespace WebCore {
34
35WMLPrevElement::WMLPrevElement(const QualifiedName& tagName, Document* doc)
36    : WMLTaskElement(tagName, doc)
37{
38}
39
40PassRefPtr<WMLPrevElement> WMLPrevElement::create(const QualifiedName& tagName, Document* document)
41{
42    return adoptRef(new WMLPrevElement(tagName, document));
43}
44
45WMLPrevElement::~WMLPrevElement()
46{
47}
48
49void WMLPrevElement::executeTask()
50{
51    ASSERT(document()->isWMLDocument());
52    WMLDocument* document = static_cast<WMLDocument*>(this->document());
53
54    WMLPageState* pageState = wmlPageStateForDocument(document);
55    if (!pageState)
56        return;
57
58    WMLCardElement* card = document->activeCard();
59    if (!card)
60        return;
61
62    storeVariableState(pageState);
63
64    // Stop the timer of the current card if it is active
65    if (WMLTimerElement* eventTimer = card->eventTimer())
66        eventTimer->stop();
67
68    pageState->page()->backForward()->goBack();
69}
70
71}
72
73#endif
74