/**
* @param cssValue
* @return true if the given {@code cssValue} is valid.
* @since 1.0.0
* @author WFF
*/
public static boolean isValid(final String cssValue) {
if (cssValue == null) {
return false;
}
final String trimmedCssValue = cssValue.trim();
if (trimmedCssValue.isEmpty()) {
return false;
}
final String trimmedCssValueLowerCase = TagStringUtil.toLowerCase(trimmedCssValue);
if (INITIAL.equals(trimmedCssValueLowerCase)
|| INHERIT.equals(trimmedCssValueLowerCase)
|| TRANSPARENT.equals(trimmedCssValueLowerCase)) {
return true;
}
if (CssColorName.isValid(trimmedCssValue)) {
return true;
}
if (RgbCssValue.isValid(trimmedCssValue)) {
return true;
}
if (RgbaCssValue.isValid(trimmedCssValue)) {
return true;
}
if (HslCssValue.isValid(trimmedCssValue)) {
return true;
}
if (HslaCssValue.isValid(trimmedCssValue)) {
return true;
}
try {
if (!trimmedCssValue.startsWith("#")) {
return false;
}
final long value = Long.parseLong(cssValue.replaceFirst("[#]", ""), 16);
return !(value > CommonConstants.FFFFFF_HEX_VALUE || value < 0);
} catch (final NumberFormatException ex) {
}
return false;
}
/**
* @param cssValue the value should be a color/color code/rgb, for example <code>#0000ff</code>.
* {@code null} is considered as an invalid value and it will throw {@code
* NullValueException}.And an empty string is also considered as an invalid value and it will
* throw {@code InvalidValueException}.
* @since 1.0.0
* @author WFF
*/
@Override
public BorderTopColor setCssValue(final String cssValue) {
final String previousCssValue = this.cssValue;
try {
if (cssValue == null) {
throw new NullValueException(
"null is an invalid value. The value should be any color for example #0000ff, rgb(15, 25, 155) Or, initial/inherit/transparent.");
} else if (!isValid(cssValue)) {
throw new InvalidValueException(
cssValue
+ " is an invalid value. The value should be any color for example #0000ff, rgb(15, 25, 155) Or, initial/inherit/transparent.");
} else {
this.cssValue = cssValue.trim();
if (RgbCssValue.isValid(cssValue)) {
if (rgbCssValue == null) {
rgbCssValue = new RgbCssValue(cssValue);
} else {
rgbCssValue.setRgb(this.cssValue);
}
rgbCssValue.setStateChangeInformer(this);
} else {
makeRgbCssValueNull();
}
if (RgbaCssValue.isValid(cssValue)) {
if (rgbaCssValue == null) {
rgbaCssValue = new RgbaCssValue(cssValue);
} else {
rgbaCssValue.setRgba(this.cssValue);
}
rgbaCssValue.setStateChangeInformer(this);
} else {
makeRgbaCssValueNull();
}
if (HslCssValue.isValid(cssValue)) {
if (hslCssValue == null) {
hslCssValue = new HslCssValue(cssValue);
} else {
hslCssValue.setHsl(this.cssValue);
}
hslCssValue.setStateChangeInformer(this);
} else {
makeHslCssValueNull();
}
if (HslaCssValue.isValid(cssValue)) {
if (hslaCssValue == null) {
hslaCssValue = new HslaCssValue(cssValue);
} else {
hslaCssValue.setHsla(this.cssValue);
}
hslaCssValue.setStateChangeInformer(this);
} else {
makeHslaCssValueNull();
}
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
}
} catch (final InvalidValueException e) {
this.cssValue = previousCssValue;
throw e;
}
return this;
}