/*

 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#include "config.h"

#include "Settings.h"

#include "BackForwardList.h"

#include "Database.h"

#include "Frame.h"

#include "FrameTree.h"

#include "FrameView.h"

#include "HistoryItem.h"

#include "Page.h"

#include "PageCache.h"

#include "StorageMap.h"

#include <limits>

using namespace std;

namespace WebCore {

static void setNeedsReapplyStylesInAllFrames(Page* page)

{

    for (Frame* frame = page->mainFrame(); frame; frame = frame->tree()->traverseNext())

        frame->setNeedsReapplyStyles();

}

#if USE(SAFARI_THEME)

bool Settings::gShouldPaintNativeControls = true;

#endif

#if PLATFORM(WIN) || (OS(WINDOWS) && PLATFORM(WX))

bool Settings::gShouldUseHighResolutionTimers = true;

#endif

Settings::Settings(Page* page)

    : m_page(page)

    , m_editableLinkBehavior(EditableLinkDefaultBehavior)

    , m_textDirectionSubmenuInclusionBehavior(TextDirectionSubmenuAutomaticallyIncluded)

    , m_minimumFontSize(0)

    , m_minimumLogicalFontSize(0)

    , m_defaultFontSize(0)

    , m_defaultFixedFontSize(0)

    , m_maximumDecodedImageSize(numeric_limits<size_t>::max())

#if ENABLE(DOM_STORAGE)            

    , m_localStorageQuota(5 * 1024 * 1024)  // Suggested by the HTML5 spec.

    , m_sessionStorageQuota(StorageMap::noQuota)

#endif

    , m_pluginAllowedRunTime(numeric_limits<unsigned>::max())

    , m_zoomMode(ZoomPage)

    , m_isSpatialNavigationEnabled(false)

    , m_isJavaEnabled(false)

    , m_loadsImagesAutomatically(false)

    , m_privateBrowsingEnabled(false)

    , m_caretBrowsingEnabled(false)

    , m_areImagesEnabled(true)

    , m_isMediaEnabled(true)

    , m_arePluginsEnabled(false)

    , m_localStorageEnabled(false)

    , m_isJavaScriptEnabled(false)

    , m_isWebSecurityEnabled(true)

    , m_allowUniversalAccessFromFileURLs(true)

    , m_allowFileAccessFromFileURLs(true)

    , m_javaScriptCanOpenWindowsAutomatically(false)

    , m_javaScriptCanAccessClipboard(false)

    , m_shouldPrintBackgrounds(false)

    , m_textAreasAreResizable(false)

#if ENABLE(DASHBOARD_SUPPORT)

    , m_usesDashboardBackwardCompatibilityMode(false)

#endif

    , m_needsAdobeFrameReloadingQuirk(false)

    , m_needsKeyboardEventDisambiguationQuirks(false)

    , m_treatsAnyTextCSSLinkAsStylesheet(false)

    , m_needsLeopardMailQuirks(false)

    , m_needsTigerMailQuirks(false)

    , m_isDOMPasteAllowed(false)

    , m_shrinksStandaloneImagesToFit(true)

    , m_usesPageCache(false)

    , m_showsURLsInToolTips(false)

    , m_forceFTPDirectoryListings(false)

    , m_developerExtrasEnabled(false)

    , m_authorAndUserStylesEnabled(true)

    , m_needsSiteSpecificQuirks(false)

    , m_fontRenderingMode(0)

    , m_frameFlatteningEnabled(false)

    , m_webArchiveDebugModeEnabled(false)

    , m_localFileContentSniffingEnabled(false)

    , m_inApplicationChromeMode(false)

    , m_offlineWebApplicationCacheEnabled(false)

    , m_shouldPaintCustomScrollbars(false)

    , m_enforceCSSMIMETypeInStrictMode(true)

    , m_usesEncodingDetector(false)

    , m_allowScriptsToCloseWindows(false)

    , m_editingBehaviorType(

#if PLATFORM(MAC) || (PLATFORM(CHROMIUM) && OS(DARWIN))

        // (PLATFORM(MAC) is always false in Chromium, hence the extra condition.)

        EditingMacBehavior

#else

        EditingWindowsBehavior

#endif

        )

    // FIXME: This should really be disabled by default as it makes platforms that don't support the feature download files

    // they can't use by. Leaving enabled for now to not change existing behavior.

    , m_downloadableBinaryFontsEnabled(true)

    , m_xssAuditorEnabled(false)

    , m_acceleratedCompositingEnabled(true)

    , m_showDebugBorders(false)

    , m_showRepaintCounter(false)

    , m_experimentalNotificationsEnabled(false)

    , m_webGLEnabled(false)

    , m_loadDeferringEnabled(true)

    , m_tiledBackingStoreEnabled(false)

    , m_html5ParserEnabled(false)

    , m_html5TreeBuilderEnabled(false) // Will be deleted soon, do not use.

    , m_paginateDuringLayoutEnabled(false)

    , m_dnsPrefetchingEnabled(true)

    , m_memoryInfoEnabled(false)

{

    // A Frame may not have been created yet, so we initialize the AtomicString 

    // hash before trying to use it.

    AtomicString::init();

}

void Settings::setStandardFontFamily(const AtomicString& standardFontFamily)

{

    if (standardFontFamily == m_standardFontFamily)

        return;

    m_standardFontFamily = standardFontFamily;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setFixedFontFamily(const AtomicString& fixedFontFamily)

{

    if (m_fixedFontFamily == fixedFontFamily)

        return;

    m_fixedFontFamily = fixedFontFamily;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setSerifFontFamily(const AtomicString& serifFontFamily)

{

    if (m_serifFontFamily == serifFontFamily)

        return;

    m_serifFontFamily = serifFontFamily;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setSansSerifFontFamily(const AtomicString& sansSerifFontFamily)

{

    if (m_sansSerifFontFamily == sansSerifFontFamily)

        return;

    m_sansSerifFontFamily = sansSerifFontFamily; 

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setCursiveFontFamily(const AtomicString& cursiveFontFamily)

{

    if (m_cursiveFontFamily == cursiveFontFamily)

        return;

    m_cursiveFontFamily = cursiveFontFamily;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setFantasyFontFamily(const AtomicString& fantasyFontFamily)

{

    if (m_fantasyFontFamily == fantasyFontFamily)

        return;

    m_fantasyFontFamily = fantasyFontFamily;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setMinimumFontSize(int minimumFontSize)

{

    if (m_minimumFontSize == minimumFontSize)

        return;

    m_minimumFontSize = minimumFontSize;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setMinimumLogicalFontSize(int minimumLogicalFontSize)

{

    if (m_minimumLogicalFontSize == minimumLogicalFontSize)

        return;

    m_minimumLogicalFontSize = minimumLogicalFontSize;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setDefaultFontSize(int defaultFontSize)

{

    if (m_defaultFontSize == defaultFontSize)

        return;

    m_defaultFontSize = defaultFontSize;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setDefaultFixedFontSize(int defaultFontSize)

{

    if (m_defaultFixedFontSize == defaultFontSize)

        return;

    m_defaultFixedFontSize = defaultFontSize;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setLoadsImagesAutomatically(bool loadsImagesAutomatically)

{

    m_loadsImagesAutomatically = loadsImagesAutomatically;

}

void Settings::setJavaScriptEnabled(bool isJavaScriptEnabled)

{

    m_isJavaScriptEnabled = isJavaScriptEnabled;

}

void Settings::setWebSecurityEnabled(bool isWebSecurityEnabled)

{

    m_isWebSecurityEnabled = isWebSecurityEnabled;

}

void Settings::setAllowUniversalAccessFromFileURLs(bool allowUniversalAccessFromFileURLs)

{

    m_allowUniversalAccessFromFileURLs = allowUniversalAccessFromFileURLs;

}

void Settings::setAllowFileAccessFromFileURLs(bool allowFileAccessFromFileURLs)

{

    m_allowFileAccessFromFileURLs = allowFileAccessFromFileURLs;

}

void Settings::setSpatialNavigationEnabled(bool isSpatialNavigationEnabled)

{

    m_isSpatialNavigationEnabled = isSpatialNavigationEnabled;

}

void Settings::setJavaEnabled(bool isJavaEnabled)

{

    m_isJavaEnabled = isJavaEnabled;

}

void Settings::setImagesEnabled(bool areImagesEnabled)

{

    m_areImagesEnabled = areImagesEnabled;

}

void Settings::setMediaEnabled(bool isMediaEnabled)

{

    m_isMediaEnabled = isMediaEnabled;

}

void Settings::setPluginsEnabled(bool arePluginsEnabled)

{

    m_arePluginsEnabled = arePluginsEnabled;

}

void Settings::setLocalStorageEnabled(bool localStorageEnabled)

{

    m_localStorageEnabled = localStorageEnabled;

}

#if ENABLE(DOM_STORAGE)        

void Settings::setLocalStorageQuota(unsigned localStorageQuota)

{

    m_localStorageQuota = localStorageQuota;

}

void Settings::setSessionStorageQuota(unsigned sessionStorageQuota)

{

    m_sessionStorageQuota = sessionStorageQuota;

}

#endif

void Settings::setPrivateBrowsingEnabled(bool privateBrowsingEnabled)

{

    if (m_privateBrowsingEnabled == privateBrowsingEnabled)

        return;

    m_privateBrowsingEnabled = privateBrowsingEnabled;

    m_page->privateBrowsingStateChanged();

}

void Settings::setJavaScriptCanOpenWindowsAutomatically(bool javaScriptCanOpenWindowsAutomatically)

{

    m_javaScriptCanOpenWindowsAutomatically = javaScriptCanOpenWindowsAutomatically;

}

void Settings::setJavaScriptCanAccessClipboard(bool javaScriptCanAccessClipboard)

{

    m_javaScriptCanAccessClipboard = javaScriptCanAccessClipboard;

}

void Settings::setDefaultTextEncodingName(const String& defaultTextEncodingName)

{

    m_defaultTextEncodingName = defaultTextEncodingName;

}

void Settings::setUserStyleSheetLocation(const KURL& userStyleSheetLocation)

{

    if (m_userStyleSheetLocation == userStyleSheetLocation)

        return;

    m_userStyleSheetLocation = userStyleSheetLocation;

    m_page->userStyleSheetLocationChanged();

}

void Settings::setShouldPrintBackgrounds(bool shouldPrintBackgrounds)

{

    m_shouldPrintBackgrounds = shouldPrintBackgrounds;

}

void Settings::setTextAreasAreResizable(bool textAreasAreResizable)

{

    if (m_textAreasAreResizable == textAreasAreResizable)

        return;

    m_textAreasAreResizable = textAreasAreResizable;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setEditableLinkBehavior(EditableLinkBehavior editableLinkBehavior)

{

    m_editableLinkBehavior = editableLinkBehavior;

}

void Settings::setTextDirectionSubmenuInclusionBehavior(TextDirectionSubmenuInclusionBehavior behavior)

{

    m_textDirectionSubmenuInclusionBehavior = behavior;

}

#if ENABLE(DASHBOARD_SUPPORT)

void Settings::setUsesDashboardBackwardCompatibilityMode(bool usesDashboardBackwardCompatibilityMode)

{

    m_usesDashboardBackwardCompatibilityMode = usesDashboardBackwardCompatibilityMode;

}

#endif

// FIXME: This quirk is needed because of Radar 4674537 and 5211271. We need to phase it out once Adobe

// can fix the bug from their end.

void Settings::setNeedsAdobeFrameReloadingQuirk(bool shouldNotReloadIFramesForUnchangedSRC)

{

    m_needsAdobeFrameReloadingQuirk = shouldNotReloadIFramesForUnchangedSRC;

}

// This is a quirk we are pro-actively applying to old applications. It changes keyboard event dispatching,

// making keyIdentifier available on keypress events, making charCode available on keydown/keyup events,

// and getting keypress dispatched in more cases.

void Settings::setNeedsKeyboardEventDisambiguationQuirks(bool needsQuirks)

{

    m_needsKeyboardEventDisambiguationQuirks = needsQuirks;

}

void Settings::setTreatsAnyTextCSSLinkAsStylesheet(bool treatsAnyTextCSSLinkAsStylesheet)

{

    m_treatsAnyTextCSSLinkAsStylesheet = treatsAnyTextCSSLinkAsStylesheet;

}

void Settings::setNeedsLeopardMailQuirks(bool needsQuirks)

{

    m_needsLeopardMailQuirks = needsQuirks;

}

void Settings::setNeedsTigerMailQuirks(bool needsQuirks)

{

    m_needsTigerMailQuirks = needsQuirks;

}

void Settings::setDOMPasteAllowed(bool DOMPasteAllowed)

{

    m_isDOMPasteAllowed = DOMPasteAllowed;

}

void Settings::setUsesPageCache(bool usesPageCache)

{

    if (m_usesPageCache == usesPageCache)

        return;

    m_usesPageCache = usesPageCache;

    if (!m_usesPageCache) {

        HistoryItemVector& historyItems = m_page->backForwardList()->entries();

        for (unsigned i = 0; i < historyItems.size(); i++)

            pageCache()->remove(historyItems[i].get());

        pageCache()->releaseAutoreleasedPagesNow();

    }

}

void Settings::setShrinksStandaloneImagesToFit(bool shrinksStandaloneImagesToFit)

{

    m_shrinksStandaloneImagesToFit = shrinksStandaloneImagesToFit;

}

void Settings::setShowsURLsInToolTips(bool showsURLsInToolTips)

{

    m_showsURLsInToolTips = showsURLsInToolTips;

}

void Settings::setFTPDirectoryTemplatePath(const String& path)

{

    m_ftpDirectoryTemplatePath = path;

}

void Settings::setForceFTPDirectoryListings(bool force)

{

    m_forceFTPDirectoryListings = force;

}

void Settings::setDeveloperExtrasEnabled(bool developerExtrasEnabled)

{

    m_developerExtrasEnabled = developerExtrasEnabled;

}

void Settings::setAuthorAndUserStylesEnabled(bool authorAndUserStylesEnabled)

{

    if (m_authorAndUserStylesEnabled == authorAndUserStylesEnabled)

        return;

    m_authorAndUserStylesEnabled = authorAndUserStylesEnabled;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setFontRenderingMode(FontRenderingMode mode)

{

    if (fontRenderingMode() == mode)

        return;

    m_fontRenderingMode = mode;

    setNeedsReapplyStylesInAllFrames(m_page);

}

FontRenderingMode Settings::fontRenderingMode() const

{

    return static_cast<FontRenderingMode>(m_fontRenderingMode);

}

void Settings::setNeedsSiteSpecificQuirks(bool needsQuirks)

{

    m_needsSiteSpecificQuirks = needsQuirks;

}

void Settings::setFrameFlatteningEnabled(bool frameFlatteningEnabled)

{

    m_frameFlatteningEnabled = frameFlatteningEnabled;

}

void Settings::setWebArchiveDebugModeEnabled(bool enabled)

{

    m_webArchiveDebugModeEnabled = enabled;

}

void Settings::setLocalFileContentSniffingEnabled(bool enabled)

{

    m_localFileContentSniffingEnabled = enabled;

}

void Settings::setLocalStorageDatabasePath(const String& path)

{

    m_localStorageDatabasePath = path;

}

void Settings::setApplicationChromeMode(bool mode)

{

    m_inApplicationChromeMode = mode;

}

void Settings::setOfflineWebApplicationCacheEnabled(bool enabled)

{

    m_offlineWebApplicationCacheEnabled = enabled;

}

void Settings::setShouldPaintCustomScrollbars(bool shouldPaintCustomScrollbars)

{

    m_shouldPaintCustomScrollbars = shouldPaintCustomScrollbars;

}

void Settings::setZoomMode(ZoomMode mode)

{

    if (mode == m_zoomMode)

        return;

    m_zoomMode = mode;

    setNeedsReapplyStylesInAllFrames(m_page);

}

void Settings::setEnforceCSSMIMETypeInStrictMode(bool enforceCSSMIMETypeInStrictMode)

{

    m_enforceCSSMIMETypeInStrictMode = enforceCSSMIMETypeInStrictMode;

}

#if USE(SAFARI_THEME)

void Settings::setShouldPaintNativeControls(bool shouldPaintNativeControls)

{

    gShouldPaintNativeControls = shouldPaintNativeControls;

}

#endif

void Settings::setUsesEncodingDetector(bool usesEncodingDetector)

{

    m_usesEncodingDetector = usesEncodingDetector;

}