File: khtml_settings.h

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/* This file is part of the KDE project
   Copyright (C) 1999 David Faure <faure@kde.org>

   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; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#ifndef KHTML_SETTINGS_H
#define KHTML_SETTINGS_H

class KConfig;
class KConfigGroup;

#include <khtml_export.h>
#include <kparts/htmlextension.h>

#include <QColor>
#include <QFont> // ### KDE 5: remove
#include <QMap> // ### KDE 5: remove
#include <QStringList>
#include <QPair>

struct KPerDomainSettings;
class KHTMLSettingsPrivate;

/**
 * Settings for the HTML view.
 */
class KHTML_EXPORT KHTMLSettings
{
public:

    /**
     * This enum specifies whether Java/JavaScript execution is allowed.
     */
    enum KJavaScriptAdvice {  // ### KDE 5: Remove. Use KParts::HtmlSettingsInterface::JavaScriptAdvice instead
        KJavaScriptDunno = 0,
        KJavaScriptAccept,
        KJavaScriptReject
    };

    enum KAnimationAdvice {
        KAnimationDisabled = 0,
        KAnimationLoopOnce,
        KAnimationEnabled
    };

    enum KSmoothScrollingMode {
        KSmoothScrollingDisabled = 0,
        KSmoothScrollingWhenEfficient,
        KSmoothScrollingEnabled
    };

    enum KDNSPrefetch {
        KDNSPrefetchDisabled = 0,
        KDNSPrefetchOnlyWWWAndSLD,
        KDNSPrefetchEnabled
    };

    /**
     * This enum specifies the policy for window.open
     */
    enum KJSWindowOpenPolicy { // ### KDE 5: Remove. Use KParts::HtmlSettingsInterface::JSWindowOpenPolicy instead.
        KJSWindowOpenAllow = 0,
        KJSWindowOpenAsk,
        KJSWindowOpenDeny,
        KJSWindowOpenSmart
    };

    /**
     * This enum specifies the policy for window.status and .defaultStatus
     */
    enum KJSWindowStatusPolicy { // ### KDE 5: Remove. Use KParts::HtmlSettingsInterface::JSWindowStatusPolicy instead.
        KJSWindowStatusAllow = 0,
        KJSWindowStatusIgnore
    };

    /**
     * This enum specifies the policy for window.moveBy and .moveTo
     */
    enum KJSWindowMovePolicy { // ### KDE 5: Remove. Use KParts::HtmlSettingsInterface::JSWindowMovePolicy instead.
        KJSWindowMoveAllow = 0,
        KJSWindowMoveIgnore
    };

    /**
     * This enum specifies the policy for window.resizeBy and .resizeTo
     */
    enum KJSWindowResizePolicy { // ### KDE 5: Remove. Use KParts::HtmlSettingsInterface::JSWindowStatusPolicy insead.
        KJSWindowResizeAllow = 0,
        KJSWindowResizeIgnore
    };

    /**
     * This enum specifies the policy for window.focus
     */
    enum KJSWindowFocusPolicy { // ### KDE 5: Remove. Use KParts::HtmlSettingsInterface::JSWindowStatusPolicy instead.
        KJSWindowFocusAllow = 0,
        KJSWindowFocusIgnore
    };

    /**
     * @internal Constructor
     */
    KHTMLSettings();
    KHTMLSettings(const KHTMLSettings &other);

    /**
     * Called by constructor and reparseConfiguration
     */
    void init();

    /** Read settings from @p config.
     * @param config is a pointer to KConfig object.
     * @param reset if true, settings are always set; if false,
     *  settings are only set if the config file has a corresponding key.
     */
    void init(KConfig *config, bool reset = true);

    /**
     * Destructor. Don't delete any instance by yourself.
     */
    virtual ~KHTMLSettings();

    // Behavior settings
    bool changeCursor() const;
    bool underlineLink() const;
    bool hoverLink() const;
    bool allowTabulation() const;
    bool autoSpellCheck() const;
    KAnimationAdvice showAnimations() const;
    KSmoothScrollingMode smoothScrolling() const;
    KDNSPrefetch dnsPrefetch() const;

    // Font settings
    QString stdFontName() const;
    QString fixedFontName() const;
    QString serifFontName() const;
    QString sansSerifFontName() const;
    QString cursiveFontName() const;
    QString fantasyFontName() const;

    // these two can be set. Mainly for historical reasons (the method in KHTMLPart exists...)
    void setStdFontName(const QString &n);
    void setFixedFontName(const QString &n);

    int minFontSize() const;
    int mediumFontSize() const;

    bool jsErrorsEnabled() const;
    void setJSErrorsEnabled(bool enabled);

    const QString &encoding() const;

    bool followSystemColors() const;

    // Color settings
    const QColor &textColor() const;
    const QColor &baseColor() const;
    const QColor &linkColor() const;
    const QColor &vLinkColor() const;

    // Autoload images
    bool autoLoadImages() const;
    bool unfinishedImageFrame() const;

    bool isOpenMiddleClickEnabled();
    /// @deprecated do not use, feature was moved to be only in konqueror
    bool isBackRightClickEnabled();

    // Java and JavaScript
    bool isJavaEnabled(const QString &hostname = QString()) const;
    bool isJavaScriptEnabled(const QString &hostname = QString()) const;
    bool isJavaScriptDebugEnabled(const QString &hostname = QString()) const;
    bool isJavaScriptErrorReportingEnabled(const QString &hostname = QString()) const;
    bool isPluginsEnabled(const QString &hostname = QString()) const;

    // AdBlocK Filtering

    /** tests whether @p url is filtered.
     * @param url the URL to test.
     * @return @c true if the URL is blacklisted and is not whitelisted.
     */
    bool isAdFiltered(const QString &url) const;

    /** identify the filter which matches @p url.
     * @param url the URL to test.
     * @param isWhiteListed if not @c NULL, set to @c true if the URL matched
     * a whitelist filter; set to @c false if it matched a blacklist filter.
     * @return the filter string that matched,
     * or @c QString() if no filter matched.
     * @since 4.4
    */
    QString adFilteredBy(const QString &url, bool *isWhiteListed = nullptr) const;

    bool isAdFilterEnabled() const;
    bool isHideAdsEnabled() const;
    void addAdFilter(const QString &url);

    // Access Keys
    bool accessKeysEnabled() const;

    // ### KDE 5: Replace KJSWindowOpenPolicy with KParts::HtmlSettingsInterface::JSWindowOpenPolicy
    KJSWindowOpenPolicy windowOpenPolicy(const QString &hostname = QString()) const;
    KJSWindowMovePolicy windowMovePolicy(const QString &hostname = QString()) const;
    KJSWindowResizePolicy windowResizePolicy(const QString &hostname = QString()) const;
    KJSWindowStatusPolicy windowStatusPolicy(const QString &hostname = QString()) const;
    KJSWindowFocusPolicy windowFocusPolicy(const QString &hostname = QString()) const;

    // helpers for parsing domain-specific configuration, used in KControl module as well
    // ### KDE 5: Replace KJavaScriptAdvice with KParts::HtmlSettingsInterface::JavaScriptAdvice.
    // ### KDE 5: Remove ? Equivalent functions now exist in KParts::HtmlSettingsInterface.
    static KJavaScriptAdvice strToAdvice(const QString &_str);
    static void splitDomainAdvice(const QString &configStr, QString &domain,
                                  KJavaScriptAdvice &javaAdvice,
                                  KJavaScriptAdvice &javaScriptAdvice);
    static const char *adviceToStr(KJavaScriptAdvice _advice);

    /** reads from @p config's current group, forcing initialization
      * if @p reset is true.
      * @param config is a pointer to KConfig object.
      * @param reset true if initialization is to be forced.
      * @param global true if the global domain is to be read.
      * @param pd_settings will be initialised with the computed (inherited)
      *     settings.
      */
    void readDomainSettings(const KConfigGroup &config, bool reset,
                            bool global, KPerDomainSettings &pd_settings);

    QString settingsToCSS() const;
    static const QString &availableFamilies();

    QString userStyleSheet() const;

    // Form completion
    bool isFormCompletionEnabled() const;
    int maxFormCompletionItems() const;

    // Meta refresh/redirect (http-equiv)
    bool isAutoDelayedActionsEnabled() const;

    QList< QPair< QString, QChar > > fallbackAccessKeysAssignments() const;

    // Whether to show passive popup when windows are blocked
    void setJSPopupBlockerPassivePopup(bool enabled);
    bool jsPopupBlockerPassivePopup() const;

private:
    friend class KHTMLGlobal;
    QString lookupFont(int i) const;

    KHTMLSettingsPrivate *const d;
    static QString *avFamilies;
};

#endif