w3c.css.properties.atsc.CssBackgroundATSC Maven / Gradle / Ivy
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//
// $Id$
// 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.atsc;
import org.w3c.css.parser.CssSelectors;
import org.w3c.css.parser.CssStyle;
import org.w3c.css.properties.css.CssBackgroundConstants;
import org.w3c.css.properties.css.CssBackgroundImage;
import org.w3c.css.properties.css.CssBackgroundPosition;
import org.w3c.css.properties.css.CssProperty;
import org.w3c.css.util.ApplContext;
import org.w3c.css.util.InvalidParamException;
import org.w3c.css.values.CssExpression;
import org.w3c.css.values.CssOperator;
import org.w3c.css.values.CssValue;
/**
*
* 5.3.7 'background'
*
*
* Value: <background-color> || <background-image> ||
* <background-repeat> || <background-attachment> ||
* <background-position>
* Initial: not defined for shorthand properties
* Applies to: all elements
* Inherited: no
* Percentage values: allowed on <background-position>
*
* The 'background' property is a shorthand property for setting the individual
* background properties (i.e., 'background-color', 'background-image',
* 'background-repeat', 'background-attachment' and 'background-position') at
* the same place in the style sheet.
*
* Possible values on the 'background' properties are the set of all possible
* values on the individual properties.
*
* BODY { background: red }
* P { background: url(chess.png) gray 50% repeat fixed }
*
* The 'background' property always sets all the individual background
* properties. In the first rule of the above example, only a value for
* 'background-color' has been given and the other individual properties are
* set to their initial value. In the second rule, all individual properties
* have been specified.
*
* @version $Revision$
* @see org.w3c.css.properties.css.CssBackgroundColor
* @see CssBackgroundImage
* @see org.w3c.css.properties.css.CssBackgroundRepeat
* @see org.w3c.css.properties.css.CssBackgroundAttachment
* @see CssBackgroundPosition
*/
public class CssBackgroundATSC extends CssProperty
implements CssOperator, CssBackgroundConstants {
CssBackgroundColorATSC color;
CssBackgroundImageATSC image;
CssBackgroundRepeatATSC repeat;
CssBackgroundAttachmentATSC attachment;
CssBackgroundPositionATSC position;
boolean same;
/**
* Create a new CssBackgroundATSC
*/
public CssBackgroundATSC() {
}
/**
* Set the value of the property
*
* @param expression The expression for this property
* @throws InvalidParamException The expression is incorrect
*/
public CssBackgroundATSC(ApplContext ac, CssExpression expression,
boolean check) throws InvalidParamException {
CssValue val = expression.getValue();
char op = SPACE;
boolean find = true;
// too many values
if (check && expression.getCount() > 6) {
throw new InvalidParamException("unrecognize", ac);
}
setByUser();
boolean manyValues = (expression.getCount() > 1);
while (find) {
find = false;
val = expression.getValue();
op = expression.getOperator();
if (val == null) {
break;
}
// if there are many values, we can't have inherit as one of them
if (manyValues && val != null && val.equals(inherit)) {
throw new InvalidParamException("unrecognize", null, null, ac);
}
if (color == null) {
try {
color = new CssBackgroundColorATSC(ac, expression);
find = true;
} catch (InvalidParamException e) {
// nothing to do, image will test this value
}
}
if (!find && image == null) {
try {
image = new CssBackgroundImageATSC(ac, expression);
find = true;
} catch (InvalidParamException e) {
// nothing to do, repeat will test this value
}
}
if (!find && repeat == null) {
try {
repeat = new CssBackgroundRepeatATSC(ac, expression);
find = true;
} catch (InvalidParamException e) {
// nothing to do, attachment will test this value
}
}
if (!find && attachment == null) {
try {
attachment = new CssBackgroundAttachmentATSC(ac, expression);
find = true;
} catch (InvalidParamException e) {
// nothing to do, position will test this value
}
}
if (!find && position == null) {
position = new CssBackgroundPositionATSC(ac, expression);
find = true;
}
if (check && val != null && !find) {
throw new InvalidParamException("unrecognize", ac);
}
if (op != SPACE) {
throw new InvalidParamException("operator",
((new Character(op)).toString()),
ac);
}
}
}
public CssBackgroundATSC(ApplContext ac, CssExpression expression)
throws InvalidParamException {
this(ac, expression, false);
}
/**
* Returns the value of this property
*/
public Object get() {
return color;
}
/**
* Returns the color
*/
public final CssValue getColor() {
if (color == null) {
return null;
} else {
return color.getColor();
}
}
/**
* Returns the name of this property
*/
public String getPropertyName() {
return "background";
}
/**
* Returns a string representation of the object.
*/
public String toString() {
String ret = "";
if (color != null) {
ret += color;
}
if (image != null) {
if (ret != null) {
ret += " ";
}
ret += image;
}
if (repeat != null) {
if (ret != null) {
ret += " ";
}
ret += repeat;
}
if (attachment != null) {
if (ret != null) {
ret += " ";
}
ret += attachment;
}
if (position != null) {
if (ret != null) {
ret += " ";
}
ret += position;
}
return ret;
}
/**
* Set this property to be important.
* Overrides this method for a macro
*/
public void setImportant() {
if (color != null) {
color.setImportant();
}
if (image != null) {
image.setImportant();
}
if (repeat != null) {
repeat.setImportant();
}
if (attachment != null) {
attachment.setImportant();
}
if (position != null) {
position.setImportant();
}
}
/**
* Returns true if this property is important.
* Overrides this method for a macro
*/
public boolean getImportant() {
return ((color == null || color.getImportant()) &&
(image == null || image.getImportant()) &&
(repeat == null || repeat.getImportant()) &&
(attachment == null || attachment.getImportant()) &&
(position == null || position.getImportant()));
}
/**
* Set the context.
* Overrides this method for a macro
*
* @see org.w3c.css.css.CssCascadingOrder#order
* @see org.w3c.css.css.StyleSheetParser#handleRule
*/
public void setSelectors(CssSelectors selector) {
super.setSelectors(selector);
if (color != null) {
color.setSelectors(selector);
}
if (image != null) {
image.setSelectors(selector);
}
if (repeat != null) {
repeat.setSelectors(selector);
}
if (attachment != null) {
attachment.setSelectors(selector);
}
if (position != null) {
position.setSelectors(selector);
}
}
/**
* Add this property to the CssStyle
*
* @param style The CssStyle
*/
public void addToStyle(ApplContext ac, CssStyle style) {
((ATSCStyle) style).cssBackgroundATSC.same = same;
if (isByUser())
((ATSCStyle) style).cssBackgroundATSC.setByUser();
if (color != null) {
color.addToStyle(ac, style);
}
if (image != null) {
image.addToStyle(ac, style);
}
if (repeat != null) {
repeat.addToStyle(ac, style);
}
if (attachment != null) {
attachment.addToStyle(ac, style);
}
if (position != null) {
position.addToStyle(ac, style);
}
}
/**
* 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 ((ATSCStyle) style).getBackgroundATSC();
} else {
return ((ATSCStyle) style).cssBackgroundATSC;
}
}
/**
* Compares two properties for equality.
*
* @param property The other property.
*/
public boolean equals(CssProperty property) {
return false; // FIXME
}
/**
* Update the source file and the line.
* Overrides this method for a macro
*
* @param line The line number where this property is defined
* @param source The source file where this property is defined
*/
public void setInfo(int line, String source) {
super.setInfo(line, source);
if (color != null) {
color.setInfo(line, source);
}
if (image != null) {
image.setInfo(line, source);
}
if (repeat != null) {
repeat.setInfo(line, source);
}
if (attachment != null) {
attachment.setInfo(line, source);
}
if (position != null) {
position.setInfo(line, source);
}
}
}