org.w3c.css.properties.css2.CssBackgroundRepeatCSS2 Maven / Gradle / Ivy

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//
// $Id: CssBackgroundRepeatCSS2.java,v 1.2 2010-01-05 19:49:51 ylafon Exp $
// From Philippe Le Hegaret ([email protected])
//
// (c) COPYRIGHT MIT and INRIA, 1997.
// Please first read the full copyright statement in file COPYRIGHT.html
package org.w3c.css.properties.css2;

import org.w3c.css.parser.CssStyle;
import org.w3c.css.properties.css.CssBackgroundRepeat;
import org.w3c.css.properties.css.CssProperty;
import org.w3c.css.properties.css1.Css1Style;
import org.w3c.css.util.ApplContext;
import org.w3c.css.util.InvalidParamException;
import org.w3c.css.values.CssExpression;
import org.w3c.css.values.CssIdent;
import org.w3c.css.values.CssTypes;
import org.w3c.css.values.CssValue;

import java.util.HashMap;

/**
 * 
 * 5.3.4    'background-repeat'
 * 
 * 
 * Value: repeat | repeat-x | repeat-y | no-repeat

 * Initial: repeat

 * Applies to: all elements

 * Inherited: no

 * Percentage values: N/A

 * 

 * If a background image is specified, the value of 'background-repeat' determines
 * how/if the image is repeated.
 * 

 * A value of 'repeat' means that the image is repeated both horizontally and
 * vertically. The 'repeat-x' ('repeat-y') value makes the image repeat horizontally
 * (vertically), to create a single band of images from one side to the other.
 * With a value of 'no-repeat', the image is not repeated.
 * 
 * BODY {
 * background: red url(pendant.gif);
 * background-repeat: repeat-y;
 * }
 * 
 * 
 * In the example above, the image will only be repeated vertically.
 *
 * @version $Revision: 1.2 $
 */
public class CssBackgroundRepeatCSS2 extends CssBackgroundRepeat {
    // FIXME TODO is that the best way ?
    
    public static boolean checkMatchingIdent(CssIdent ident) {
        return allowed_values.containsValue(ident);
    }
    
    private static HashMap allowed_values;

    static {
        allowed_values = new HashMap();
        String[] REPEAT = {"repeat", "repeat-x", "repeat-y", "no-repeat"};

        for (String aREPEAT : REPEAT) {
            allowed_values.put(aREPEAT, CssIdent.getIdent(aREPEAT));
        }
    }

    public CssValue value;

    /**
     * Create a new CssBackgroundRepeatCSS2
     */
    public CssBackgroundRepeatCSS2() {
        value = repeat;
    }

    /**
     * Set the value of the property
     *
     * @param expression The expression for this property
     * @throws InvalidParamException The expression is incorrect
     */
    public CssBackgroundRepeatCSS2(ApplContext ac, CssExpression expression,
                                   boolean check) throws InvalidParamException {

        if (check && expression.getCount() > 1) {
            throw new InvalidParamException("unrecognize", ac);
        }

        CssValue val = expression.getValue();
        setByUser();

        if (val.getType() != CssTypes.CSS_IDENT) {
            throw new InvalidParamException("value", expression.getValue(),
                    getPropertyName(), ac);
        }
        if (inherit.equals(val)) {
            value = inherit;
        } else {
            value = allowed_values.get(val.toString());
            if (value == null) {
                throw new InvalidParamException("value", expression.getValue(),
                        getPropertyName(), ac);
            }
        }
        expression.next();
    }

    public CssBackgroundRepeatCSS2(ApplContext ac, CssExpression expression)
            throws InvalidParamException {
        this(ac, expression, false);
    }

    /**
     * Returns the value of this property
     */
    public Object get() {
        return value;
    }

    /**
     * Returns a string representation of the object.
     */
    public String toString() {
        return value.toString();
    }

    // TODO FIXME get rid of this when Css1Style gets only one background
    /**
     * Add this property to the CssStyle.
     *
     * @param style The CssStyle
     */
    public void addToStyle(ApplContext ac, CssStyle style) {
        CssBackgroundCSS2 cssBackground = ((Css1Style) style).cssBackgroundCSS2;
        if (cssBackground.repeat != null)
            style.addRedefinitionWarning(ac, this);
        cssBackground.repeat = this;
    }

    /**
     * Get this property in the style.
     *
     * @param style   The style where the property is
     * @param resolve if true, resolve the style to find this property
     */
    public CssProperty getPropertyInStyle(CssStyle style, boolean resolve) {
        if (resolve) {
            return ((Css1Style) style).getBackgroundRepeatCSS2();
        } else {
            return ((Css1Style) style).cssBackgroundCSS2.repeat;
        }
    }

    /**
     * Compares two properties for equality.
     *
     * @param property The other property.
     */
    public boolean equals(CssProperty property) {
        return (property instanceof CssBackgroundRepeatCSS2 &&
                value == ((CssBackgroundRepeatCSS2) property).value);
    }

    /**
     * Is the value of this property is a default value.
     * It is used by all macro for the function print
     */
    public boolean isDefault() {
        return (repeat == value);
    }
}
org.w3c.css.properties.css2.CssBackgroundRepeatCSS2 Maven / Gradle / Ivy

* 5.3.4 'background-repeat' *
