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A java framework to develop web applications
/*
* Copyright 2014-2020 Web Firm Framework
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* @author WFF
*/
package com.webfirmframework.wffweb.css;
import com.webfirmframework.wffweb.InvalidValueException;
import com.webfirmframework.wffweb.data.AbstractBean;
import com.webfirmframework.wffweb.util.StringUtil;
/**
*
* @author WFF
* @since 1.0.0
*/
public class HslaCssValue extends AbstractBean {
private static final long serialVersionUID = 1_0_0L;
private String hsl = "hsla(0, 0%, 0%, 1)";
private int h = 0;
private float s = 0;
private float l = 0;
private float a = 1F;
/**
* The default value is hsla(0, 0%, 0%, 1).
*
* @author WFF
* @since 1.0.0
*/
public HslaCssValue() {
}
/**
* @param hslCssValue eg:- hsla(155, 55%, 75%, 1)
*/
public HslaCssValue(final String hslCssValue) {
super();
extractAndAssign(hslCssValue);
}
public HslaCssValue(final HslaCssValue hslCssValue) {
super();
extractAndAssign(hslCssValue.getValue());
}
/**
* @param hsl eg:- hsla(155, 55%, 75%, 1)
*
* @since 1.0.0
* @author WFF
*/
public void setHsla(final String hsl) {
extractAndAssign(hsl);
}
/**
* @param hslString
* @since 1.0.0
* @author WFF
*/
private void extractAndAssign(final String hslString) {
final String hslStringLowerCase = hslString.replace(" ", "").toLowerCase();
if (hslStringLowerCase.startsWith("hsla(") && hslStringLowerCase.contains(")")) {
final String hsl = hslStringLowerCase.replace(",", ", ");
final String[] hslStringParts = StringUtil.splitByComma(hslStringLowerCase
.substring(hslStringLowerCase.indexOf('(') + 1, hslStringLowerCase.lastIndexOf(')')));
if (hslStringParts.length == 4) {
h = Integer.parseInt(hslStringParts[0]);
if (h < 0 || h > 360) {
throw new InvalidValueException(hslStringLowerCase
+ " is not a valid hsl string. h value in hslString should be in between 0 to 360, eg: hsla(120, 25%, 15%, 1)");
}
s = Float.parseFloat(hslStringParts[1].replace("%", ""));
if (s < 0 || s > 100) {
throw new InvalidValueException(hslStringLowerCase
+ " is not a valid hsl string. s value in hslString should be in between 0 to 100, eg: hsla(120, 25%, 15%, 1)");
}
l = Float.parseFloat(hslStringParts[2].replace("%", ""));
if (l < 0 || l > 100) {
throw new InvalidValueException(hslStringLowerCase
+ " is not a valid hsl string. l value in hslString should be in between 0 to 100, eg: hsla(120, 25%, 15%, 1)");
}
a = Float.parseFloat(hslStringParts[3]);
if (a < 0 || a > 1) {
throw new InvalidValueException(hslStringLowerCase
+ " is not a valid hsl string. h value in hslString should be in between 0 to 360, eg: hsla(120, 25%, 15%, 1)");
}
this.hsl = hsl;
} else {
throw new InvalidValueException(hslStringLowerCase
+ " is not a valid hsl string. It should be in the format of hsla(120, 25%, 15%, 1)");
}
} else {
throw new InvalidValueException(hslStringLowerCase
+ " is not a valid hsl string. It should be in the format of hsla(120, 25%, 15%, 1)");
}
}
/**
* @param h hue value. accepts values only from 0 to 360.
* @param s saturation value. accepts values only from 0 to 100.
* @param l lightness value. accepts values only from 0 to 100.
* @param a alpha value. accepts values only from 0 to 1.
*/
public HslaCssValue(final int h, final float s, final float l, final float a) {
super();
if ((h < 0 || h > 360) || (s < 0 || s > 100) || (l < 0 || l > 100)) {
throw new InvalidValueException("h should be in between 0 - 360 and s & l should be in between 0 - 100.");
}
this.h = h;
this.s = s;
this.l = l;
this.a = a;
hsl = "hsla(" + h + ", " + s + "%, " + l + "%, " + a + ")";
}
public int getH() {
return h;
}
/**
* @param h the hue value, it should be in between 0 to 360.
* @author WFF
* @since 1.0.0
*/
public void setH(final int h) {
if (h < 0 || h > 360) {
throw new InvalidValueException("h paramater accept values only from 0 to 360.");
}
this.h = h;
hsl = "hsla(" + h + ", " + s + "%, " + l + "%, " + a + ")";
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
}
/**
* @return the saturation value. Its unit is always %.
* @author WFF
* @since 1.0.0
*/
public float getS() {
return s;
}
/**
* @param s the saturation value, it should be in between 0 to 100.
* @author WFF
* @since 1.0.0
*/
public void setS(final float s) {
if (s < 0 || s > 100) {
throw new InvalidValueException("s paramater accept values only from 0 to 100.");
}
this.s = s;
hsl = "hsla(" + h + ", " + s + "%, " + l + "%, " + a + ")";
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
}
/**
* @return the lightness value. Its unit is always %.
* @author WFF
* @since 1.0.0
*/
public float getL() {
return l;
}
/**
*
* @author WFF
* @return the unit for saturation s.
* @since 1.0.0
*/
public static CssLengthUnit getSUnit() {
return CssLengthUnit.PER;
}
/**
*
* @author WFF
* @return the unit for lightness l.
* @since 1.0.0
*/
public static CssLengthUnit getLUnit() {
return CssLengthUnit.PER;
}
/**
* @param l the lightness value, it should be in between 0 to 100.
* @author WFF
* @since 1.0.0
*/
public void setL(final float l) {
if (l < 0 || l > 100) {
throw new InvalidValueException("l paramater accept values only from 0 to 100.");
}
this.l = l;
hsl = "hsla(" + h + ", " + s + "%, " + l + "%, " + a + ")";
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
}
/**
* @param a the alpha value, it should be in between 0 to 1.
* @author WFF
* @since 1.0.0
*/
public void setA(final float a) {
if (a < 0 || a > 1) {
throw new InvalidValueException("a paramater accept values only from 0 to 1.");
}
this.a = a;
hsl = "hsla(" + h + ", " + s + "%, " + l + "%, " + a + ")";
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
}
/**
* To get the alpha value.
*
* @return the a
* @author WFF
* @since 1.0.0
*/
public float getA() {
return a;
}
@Override
public String toString() {
return hsl;
}
/**
* @return the print format of these values as a css value.
* @since 1.0.0
* @author WFF
*/
@Override
public String getValue() {
return hsl;
}
/**
* @param hslString eg:- hsla(125, 55%, 75%, 1)
* @return true if valid and false for invalid.
* @since 1.0.0
* @author WFF
*/
public static boolean isValid(final String hslString) {
try {
final String hslStringLowerCase = hslString.replace(" ", "").toLowerCase();
if (hslStringLowerCase.startsWith("hsla(") && hslStringLowerCase.contains(")")) {
final String[] hslStringParts = StringUtil.splitByComma(hslStringLowerCase
.substring(hslStringLowerCase.indexOf('(') + 1, hslStringLowerCase.lastIndexOf(')')));
if (hslStringParts.length == 4) {
final int r = Integer.parseInt(hslStringParts[0]);
if (r < 0 || r > 360) {
return false;
}
if (!hslStringParts[1].endsWith("%")) {
return false;
}
final float g = Float.parseFloat(hslStringParts[1].replace("%", ""));
if (g < 0 || g > 100) {
return false;
}
if (!hslStringParts[2].endsWith("%")) {
return false;
}
final float b = Float.parseFloat(hslStringParts[2].replace("%", ""));
if (b < 0 || b > 100) {
return false;
}
final float a = Float.parseFloat(hslStringParts[3]);
return !(a < 0 || a > 1);
}
return false;
}
} catch (final NumberFormatException e) {
}
return false;
}
}
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