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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * This code is free software; you can redistribute it and/or modify it

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 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

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 * This code is distributed in the hope that it will be useful, but WITHOUT

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

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/*

 * This file is available under and governed by the GNU General Public

 * License version 2 only, as published by the Free Software Foundation.

 * However, the following notice accompanied the original version of this

 * file and, per its terms, should not be removed:

 *

 * Copyright (c) 2000 World Wide Web Consortium,

 * (Massachusetts Institute of Technology, Institut National de

 * Recherche en Informatique et en Automatique, Keio University). All

 * Rights Reserved. This program is distributed under the W3C's Software

 * Intellectual Property License. This program 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 W3C License http://www.w3.org/Consortium/Legal/ for more details.

 */

package org.w3c.dom.css;

import org.w3c.dom.DOMException;

/**

 *  The <code>CSSPrimitiveValue</code> interface represents a single CSS value

 * . This interface may be used to determine the value of a specific style

 * property currently set in a block or to set a specific style property

 * explicitly within the block. An instance of this interface might be

 * obtained from the <code>getPropertyCSSValue</code> method of the

 * <code>CSSStyleDeclaration</code> interface. A

 * <code>CSSPrimitiveValue</code> object only occurs in a context of a CSS

 * property.

 * <p> Conversions are allowed between absolute values (from millimeters to

 * centimeters, from degrees to radians, and so on) but not between relative

 * values. (For example, a pixel value cannot be converted to a centimeter

 * value.) Percentage values can't be converted since they are relative to

 * the parent value (or another property value). There is one exception for

 * color percentage values: since a color percentage value is relative to

 * the range 0-255, a color percentage value can be converted to a number;

 * (see also the <code>RGBColor</code> interface).

 * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Style-20001113'>Document Object Model (DOM) Level 2 Style Specification</a>.

 * @since DOM Level 2

 */

public interface CSSPrimitiveValue extends CSSValue {

    // UnitTypes

    /**

     * The value is not a recognized CSS2 value. The value can only be

     * obtained by using the <code>cssText</code> attribute.

     */

    public static final short CSS_UNKNOWN               = 0;

    /**

     * The value is a simple number. The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_NUMBER                = 1;

    /**

     * The value is a percentage. The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_PERCENTAGE            = 2;

    /**

     * The value is a length (ems). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_EMS                   = 3;

    /**

     * The value is a length (exs). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_EXS                   = 4;

    /**

     * The value is a length (px). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_PX                    = 5;

    /**

     * The value is a length (cm). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_CM                    = 6;

    /**

     * The value is a length (mm). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_MM                    = 7;

    /**

     * The value is a length (in). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_IN                    = 8;

    /**

     * The value is a length (pt). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_PT                    = 9;

    /**

     * The value is a length (pc). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_PC                    = 10;

    /**

     * The value is an angle (deg). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_DEG                   = 11;

    /**

     * The value is an angle (rad). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_RAD                   = 12;

    /**

     * The value is an angle (grad). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_GRAD                  = 13;

    /**

     * The value is a time (ms). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_MS                    = 14;

    /**

     * The value is a time (s). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_S                     = 15;

    /**

     * The value is a frequency (Hz). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_HZ                    = 16;

    /**

     * The value is a frequency (kHz). The value can be obtained by using the

     * <code>getFloatValue</code> method.

     */

    public static final short CSS_KHZ                   = 17;

    /**

     * The value is a number with an unknown dimension. The value can be

     * obtained by using the <code>getFloatValue</code> method.

     */

    public static final short CSS_DIMENSION             = 18;

    /**

     * The value is a STRING. The value can be obtained by using the

     * <code>getStringValue</code> method.

     */

    public static final short CSS_STRING                = 19;

    /**

     * The value is a URI. The value can be obtained by using the

     * <code>getStringValue</code> method.

     */

    public static final short CSS_URI                   = 20;

    /**

     * The value is an identifier. The value can be obtained by using the

     * <code>getStringValue</code> method.

     */

    public static final short CSS_IDENT                 = 21;

    /**

     * The value is a attribute function. The value can be obtained by using

     * the <code>getStringValue</code> method.

     */

    public static final short CSS_ATTR                  = 22;

    /**

     * The value is a counter or counters function. The value can be obtained

     * by using the <code>getCounterValue</code> method.

     */

    public static final short CSS_COUNTER               = 23;

    /**

     * The value is a rect function. The value can be obtained by using the

     * <code>getRectValue</code> method.

     */

    public static final short CSS_RECT                  = 24;

    /**

     * The value is a RGB color. The value can be obtained by using the

     * <code>getRGBColorValue</code> method.

     */

    public static final short CSS_RGBCOLOR              = 25;

    /**

     * The type of the value as defined by the constants specified above.

     */

    public short getPrimitiveType();

    /**

     *  A method to set the float value with a specified unit. If the property

     * attached with this value can not accept the specified unit or the

     * float value, the value will be unchanged and a

     * <code>DOMException</code> will be raised.

     * @param unitType  A unit code as defined above. The unit code can only

     *   be a float unit type (i.e. <code>CSS_NUMBER</code>,

     *   <code>CSS_PERCENTAGE</code>, <code>CSS_EMS</code>,

     *   <code>CSS_EXS</code>, <code>CSS_PX</code>, <code>CSS_CM</code>,

     *   <code>CSS_MM</code>, <code>CSS_IN</code>, <code>CSS_PT</code>,

     *   <code>CSS_PC</code>, <code>CSS_DEG</code>, <code>CSS_RAD</code>,

     *   <code>CSS_GRAD</code>, <code>CSS_MS</code>, <code>CSS_S</code>,

     *   <code>CSS_HZ</code>, <code>CSS_KHZ</code>,

     *   <code>CSS_DIMENSION</code>).

     * @param floatValue  The new float value.

     * @exception DOMException

     *    INVALID_ACCESS_ERR: Raised if the attached property doesn't support

     *   the float value or the unit type.

     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this property is readonly.

     */

    public void setFloatValue(short unitType,

                              float floatValue)

                              throws DOMException;

    /**

     *  This method is used to get a float value in a specified unit. If this

     * CSS value doesn't contain a float value or can't be converted into

     * the specified unit, a <code>DOMException</code> is raised.

     * @param unitType  A unit code to get the float value. The unit code can

     *   only be a float unit type (i.e. <code>CSS_NUMBER</code>,

     *   <code>CSS_PERCENTAGE</code>, <code>CSS_EMS</code>,

     *   <code>CSS_EXS</code>, <code>CSS_PX</code>, <code>CSS_CM</code>,

     *   <code>CSS_MM</code>, <code>CSS_IN</code>, <code>CSS_PT</code>,

     *   <code>CSS_PC</code>, <code>CSS_DEG</code>, <code>CSS_RAD</code>,

     *   <code>CSS_GRAD</code>, <code>CSS_MS</code>, <code>CSS_S</code>,

     *   <code>CSS_HZ</code>, <code>CSS_KHZ</code>,

     *   <code>CSS_DIMENSION</code>).

     * @return  The float value in the specified unit.

     * @exception DOMException

     *    INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a float

     *   value or if the float value can't be converted into the specified

     *   unit.

     */

    public float getFloatValue(short unitType)

                               throws DOMException;

    /**

     *  A method to set the string value with the specified unit. If the

     * property attached to this value can't accept the specified unit or

     * the string value, the value will be unchanged and a

     * <code>DOMException</code> will be raised.

     * @param stringType  A string code as defined above. The string code can

     *   only be a string unit type (i.e. <code>CSS_STRING</code>,

     *   <code>CSS_URI</code>, <code>CSS_IDENT</code>, and

     *   <code>CSS_ATTR</code>).

     * @param stringValue  The new string value.

     * @exception DOMException

     *    INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a string

     *   value or if the string value can't be converted into the specified

     *   unit.

     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this property is readonly.

     */

    public void setStringValue(short stringType,

                               String stringValue)

                               throws DOMException;

    /**

     *  This method is used to get the string value. If the CSS value doesn't

     * contain a string value, a <code>DOMException</code> is raised.  Some

     * properties (like 'font-family' or 'voice-family') convert a

     * whitespace separated list of idents to a string.

     * @return  The string value in the current unit. The current

     *   <code>primitiveType</code> can only be a string unit type (i.e.

     *   <code>CSS_STRING</code>, <code>CSS_URI</code>,

     *   <code>CSS_IDENT</code> and <code>CSS_ATTR</code>).

     * @exception DOMException

     *    INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a string

     *   value.

     */

    public String getStringValue()

                                 throws DOMException;

    /**

     *  This method is used to get the Counter value. If this CSS value

     * doesn't contain a counter value, a <code>DOMException</code> is

     * raised. Modification to the corresponding style property can be

     * achieved using the <code>Counter</code> interface.

     * @return The Counter value.

     * @exception DOMException

     *    INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a

     *   Counter value (e.g. this is not <code>CSS_COUNTER</code>).

     */

    public Counter getCounterValue()

                                   throws DOMException;

    /**

     *  This method is used to get the Rect value. If this CSS value doesn't

     * contain a rect value, a <code>DOMException</code> is raised.

     * Modification to the corresponding style property can be achieved

     * using the <code>Rect</code> interface.

     * @return The Rect value.

     * @exception DOMException

     *    INVALID_ACCESS_ERR: Raised if the CSS value doesn't contain a Rect

     *   value. (e.g. this is not <code>CSS_RECT</code>).

     */

    public Rect getRectValue()

                             throws DOMException;

    /**

     *  This method is used to get the RGB color. If this CSS value doesn't

     * contain a RGB color value, a <code>DOMException</code> is raised.

     * Modification to the corresponding style property can be achieved

     * using the <code>RGBColor</code> interface.

     * @return the RGB color value.

     * @exception DOMException

     *    INVALID_ACCESS_ERR: Raised if the attached property can't return a

     *   RGB color value (e.g. this is not <code>CSS_RGBCOLOR</code>).

     */

    public RGBColor getRGBColorValue()

                                     throws DOMException;

}