/*
 * Copyright 2008 by Aaron Seigo <aseigo@kde.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 */

#ifndef PLASMA_TOOLTIPCONTENT_H
#define PLASMA_TOOLTIPCONTENT_H

#include <QtCore/QString>
#include <QtCore/QUrl>
#include <QtCore/QVariant>
#include <QtCore/QList>
#include <QtGui/QPixmap>
#include <QtGui/QIcon>

#include <plasma/plasma_export.h>

class QTextDocument;
class QGraphicsWidget;

/**
 * This provides the content for a tooltip.
 *
 * Normally you will want to set at least the @p mainText and
 * @p subText.
 */

namespace Plasma
{

class ToolTipContentPrivate;

class PLASMA_EXPORT ToolTipContent
{
public:
    enum ResourceType { ImageResource = 0, HtmlResource, CssResource };

    /**
     * Creates an empty Content
     */
    ToolTipContent();

    ~ToolTipContent();

    /**
     * Copy constructor
     */
    ToolTipContent(const ToolTipContent &other);

    /**
     * Constructor that sets the common fields
     */
    ToolTipContent(const QString &mainText,
                   const QString &subText,
                   const QPixmap &image = QPixmap());

    /**
     * Constructor that sets the common fields
     */
    ToolTipContent(const QString &mainText,
                   const QString &subText,
                   const QIcon &icon);

    ToolTipContent &operator=(const ToolTipContent &other);

    /**
     * @return true if all the fields are empty
     */
    bool isEmpty() const;

    /**
     * Sets the main text which containts important information, e.g. the title
     */
    void setMainText(const QString &text);

    /**
     * Important information, e.g. the title
     */
    QString mainText() const;

    /**
     * Sets text which elaborates on the @p mainText
     */
    void setSubText(const QString &text) ;

    /**
     * Elaborates on the @p mainText
     */
    QString subText() const;

    /**
     * Sets the icon to show
     */
    void setImage(const QPixmap &image);

    /**
     * Sets the icon to show
     */
    void setImage(const QIcon &icon);

    /**
     * An icon to display
     */
    QPixmap image() const;

    /**
     * Sets the ID of the window to show a preview for.
     * @deprecated
     * @see setWindowsToPreview
     */
    void setWindowToPreview(WId id);

    /**
     * Id of a window if you want to show a preview
     * @deprecated
     * @see windowsToPreview
     */
    WId windowToPreview() const;

    /**
     * Sets the IDS of the windows to show a preview for
     * @since 4.3
     */
    void setWindowsToPreview(const QList<WId> &ids);

    /**
     * Ids of a windows if you want to show a preview
     * @since 4.3
     */
    QList<WId> windowsToPreview() const;

    /**
     * sets if when the mouse will be over a thumbnail the corresponding window
     * will be highlighted by reducing opacity of all the other windows
     * @since 4.4
     */
    void setHighlightWindows(bool highlight);

    /**
     * true if when the mouse will be over a thumbnail the corresponding window
     * will be highlighted by reducing opacity of all the other windows
     * @since 4.4
     */
    bool highlightWindows() const;

    /** Sets whether or not to autohide the tooltip, defaults to true
     */
    void setAutohide(bool autohide);

    /**
     * Whether or not to autohide the tooltip, defaults to true
     */
    bool autohide() const;

    /**
     * Sets whether or not the tooltip should popup instantly when
     * the widget is hovered, defaults to false.
     *
     * @since 4.7
     */
    void setInstantPopup(bool enabled);

    /**
     * Whether or not the tooltip should popup instantly when
     * the widget is hovered, defaults to false.
     *
     * @since 4.7
     */
    bool isInstantPopup() const;

    /**
     * Adds a resource that can then be referenced from the text elements
     * using rich text
     */
    void addResource(ResourceType type, const QUrl &path, const QVariant &resource);

    /**
     * Registers all resources with a given document
     */
    void registerResources(QTextDocument *document) const;

    /**
     * Sets whether or not the tooltip contains clickable content, such as
     * window previews. Defaults to false, or not clickable.
     *
     * @since 4.3
     */
    void setClickable(bool clickable);

    /**
     * @return true if the tooltip is clickabel
     *
     * @since 4.3
     */
    bool isClickable() const;

    /**
     * Sets an optional graphicsWidget that will be used for positioning the tooltip
     * @since 4.6
     */
    void setGraphicsWidget(QGraphicsWidget *widget);

    /**
     * the graphicsWidget used for positioning the tooltip, if any
     * @since 4.6
     */
    QGraphicsWidget *graphicsWidget() const;

private:
    ToolTipContentPrivate * const d;
};

} // namespace Plasma

#endif