zkoss/zk

/* StyleSheet.java

    Purpose:
        
    Description:
        
    History:
        Thu Jun  2 12:32:59     2005, Created by tomyeh

Copyright (C) 2005 Potix Corporation. All Rights Reserved.

{{IS_RIGHT
    This program is distributed under LGPL Version 3.0 in the hope that
    it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.html;

import org.zkoss.lang.Objects;

/**
 * Represents a style sheet.
 *
 * @author tomyeh
 * @since 6.0.0
 */
public class StyleSheet implements java.io.Serializable, Cloneable {
    private static final long serialVersionUID = 20100514L;

    private final String _href, _type, _content, _media;
    private final boolean _disabled;

    /** Creates by specifying the file to contain the style sheets.
     *
     * @param href URI of the file containing the style sheets.
     * @param type the type. If null, "text/css" is assumed.
     */
    public StyleSheet(String href, String type) {
        this(href, type, null, false, false);
    }
    /** Creates by assigning the content (style sheets).
     *
     * @param content the style content or an URI to an external file.
     * @param type the type. If null, "text/css" is assumed.
     * @param byContent the content argument is the style content, or
     * an URI to an external content
     */
    public StyleSheet(String content, String type, boolean byContent) {
        this(content, type, null, byContent, false);
    }
    /** Creates by assigning the content (style sheets).
     *
     * @param content the style content or an URI to an external file.
     * @param type the type. If null, "text/css" is assumed.
     * @param media the media. If null, it is omitted.
     * @param byContent the content argument is the style content, or
     * an URI to an external content
     */
    public StyleSheet(String content, String type, String media, boolean byContent) {
        this(content, type, null, byContent, false);
    }
    /** Creates by assigning the content (style sheets).
     *
     * @param content the style content or an URI to an external file.
     * @param type the type. If null, "text/css" is assumed.
     * @param media the media. If null, it is omitted.
     * @param byContent the content argument is the style content, or
     * an URI to an external content
     * @param disabled whether the style sheet is disabled.
     * @since 9.5.0
     */
    public StyleSheet(String content, String type, String media, boolean byContent, boolean disabled) {
        if (content == null)
            throw new IllegalArgumentException("null content");

        if (byContent) {
            _href = null;
            _content = content;
        } else {
            _href = content;
            _content = null;
        }
        _type = type != null && type.length() != 0 ? type: "text/css";
        _media = media != null && media.length() != 0 ? media: null;
        _disabled = disabled;
    }

    /** Returns the href that contains the style sheets, or null if
     * {@link #getContent} is not null.
     */
    public String getHref() {
        return _href;
    }
    /** Returns the type. */
    public String getType() {
        return _type;
    }
    /** Returns the media, or null if not available.
     * <p>Refer to <a href="http://www.w3.org/TR/CSS2/media.html">media-depedent style sheet</a> for details.
     */
    public String getMedia() {
        return _media;
    }
    /** Returns the style sheets, or null if {@link #getHref} is not null.
     */
    public String getContent() {
        return _content;
    }
    /** Returns whether the style sheet is disabled.
     * <p>Default: false.
     * @since 9.5.0
     * @return boolean
     */
    public boolean isDisabled() {
        return _disabled;
    }

    //-- cloneable --//
    public Object clone() {
        try {
            return super.clone();
        } catch (CloneNotSupportedException e) {
            throw new InternalError();
        }
    }

    //-- Object --//
    public String toString() {
        return "[href: "+_href+" type="+_type+']';
    }
    public int hashCode() {
        return _href.hashCode() + _type.hashCode();
    }
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof StyleSheet))
            return false;
        final StyleSheet ss = (StyleSheet)o;
        return Objects.equals(ss._href, _href)
            && Objects.equals(ss._type, _type)
            && Objects.equals(ss._content, _content)
            && Objects.equals(ss._media, _media);
    }
}