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For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.


#include <QObject>
#include <QList>
#include <QPair>

#include <QString>
#include <QStringList>
class ScribusDoc;
class QTabWidget;

/** RemoveItem.first will be the style to remove and RemoveItem.second
 *  will be the one used in place of the deleted style */

typedef QPair<QString, QString> RemoveItem;

/** StyleName.first is the name of the style and StyleName.second is the
 *  name of the parent style or QString() if there's no parent for this style */

typedef QPair<QString, QString> StyleName;

 * @brief Represents a style type that can be added to the Style Manager
 * @brief palette.
 * This class is meant to be used as a parent class for any style types
 * that are wanted to be configured using the Style Manager palette.
 * @author Riku Leino <>
 * @date November 2005

class StyleItem : public QObject {
        virtual ~StyleItem();

         * @brief return the QWidget for editing style's properties
         * This is the widget where the attributes of style are edited. It
         * will be placed on the main tab widget's Properties page.
         * Whenever a selected style is edited StyleItem should emit the
         * signal selectionDirty() if it is the first time style is edited
         * after applying previous changes.

        virtual QTabWidget* widget() = 0;

        /** @brief name of the style (plural) (Paragraph Styles, Character Styles...) */
        virtual QString typeNamePlural() = 0;

        /** @brief name of the style (singular) (Paragraph Style, Character Style...) */
        virtual QString typeNameSingular() = 0;

         * @brief Whenever style manager is shown attached StyleItems get the current doc
         * @brief passed to them with this function.

        virtual void setCurrentDoc(ScribusDoc *doc) = 0;

         * @brief existing styles in this category
         * return the names of cached styles (even if those are changed)
         * @param reloadFromDoc should the styles be loaded from the document or
         * should function return currently cached and possibly changed styles
         * @return Name of the styles and their parent as a QValueList.
         * StyleName::first is the style name and StyleName::second it's parent's name.
         * If the StyleItem has no parent StyleName::second should be set to QString().

        virtual QList<StyleName> styles(bool reloadFromDoc = true) = 0;

         * @brief Reload styles and remove all cached (and possibly changed ones).
         * This function will be called whenever a user clicks on the reset button.
         * Resetting styles means loading them from the doc replacing all cached styles
         * and without applying changes to the previously cached styles.

        virtual void reload() = 0;

         * @brief Whenever this function is called StyleItem must update the main
         * @brief widget with the corresponding data.
         * Whenever user selects a style from the style list in the manager
         * this slot is called from the StyleItem. StyleItem must then update
         * the main widget with the data related to the selected item and then
         * just wait for apply() to apply the changes user made (with the
         * main widget). When implementing this method one should note that
         * there may be more than a single style selected.
         * @param styleNames styles selected for editing

        virtual void selected(const QStringList &styleNames) = 0;

         * @brief Return the name of the style in this category applied to the
         * @brief selected object(s) in the current document or QString()
         * @brief if there is no selection in the document.
         * If there are multiple objects selected only return a style name if the same style
         * is applied on all selected objects. If they doesn't share the same style then
         * return QString().

        virtual QString fromSelection() const = 0;

         * @brief Apply style called styleName to the documents current selection
         * @param styleName name of the style to be applied to the documents current selection

        virtual void toSelection(const QString &styleName) const = 0;

         * @brief Create a new temp. style with default values and return the
         * @brief name of the newly created style.
         * @return name of the created style

        virtual QString newStyle() = 0;

         * @brief Create a new temp. style which is a clone of the style called fromStyle.
         * @param fromStyle name of the style to clone
         * @return name of the created style

        virtual QString newStyle(const QString &fromStyle) = 0;

         * @brief apply changes made to the currently selected style(s)
         * When a user has edited a style (s)he can either cancel or apply
         * changes. On cancel and ok button clicks no action is needed from
         * the StyleItem but if a user chooses to press button apply StyleItem's
         * function apply() is called and StyleItem must upgrade the style
         * and apply it where ever that style is used in the document.
         * (cancel will be disabled after this)

        virtual void apply() = 0;

         * @brief When SM switches to or away from edit mode this function is called
         * @param isOn true if SM is in edit mode false if SM has just closed edit mode

        virtual void editMode(bool isOn) {};

        /** @brief returns if the style is a default style */
        virtual bool isDefaultStyle(const QString &stylename) const = 0;

        /** @brief set if the style is a default style */
        virtual void setDefaultStyle(bool ids) = 0;
        /** @brief returns the key combination for the style's shortcut */
        virtual QString shortcut(const QString &stylename) const = 0;

        /** @brief set the key combination for the selected style's shortcut */
        virtual void setShortcut(const QString &shortcut) = 0;

         * @brief User has requested to delete all the selected styles
         * @param removeList list of styles to be deleted. RemoveItem::first is
         * the style to be deleted and RemoveItem::second is the style to replace
         * the deleted style with. If no replacement was requested RemoveItem::second
         * has been set to QString().

        virtual void deleteStyles(const QList<RemoveItem> &removeList) = 0;

        /** @brief Called when the currently selected style's name has changed */
        virtual void nameChanged(const QString &newName) = 0;

        /** @brief Return a unique name for a style using the base in the name */
        virtual QString getUniqueName(const QString &base) = 0;

        /** @brief reload all the gui strings whenever this method is called */
        virtual void languageChange() = 0;

        /** @brief document unit has been changed, upgrade widgets  */
        virtual void unitChange() = 0;

        // do not implement this in derived classes
        QString typeName() { return typeNamePlural(); };

        Emit this signal when selection has been edited. SM knows to highlight the
        edited styles based on this signal.

        /* hide these two, StyleItem is not meant to be copied */
        StyleItem(const StyleItem&);
        void operator=(const StyleItem&);