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A java framework to develop web applications
/*
* Copyright 2014-2016 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 java.util.Arrays;
import java.util.List;
import com.webfirmframework.wffweb.InvalidValueException;
import com.webfirmframework.wffweb.NullValueException;
import com.webfirmframework.wffweb.css.core.AbstractCssProperty;
import com.webfirmframework.wffweb.util.TagStringUtil;
/**
*
* font-size: medium | xx-small | x-small | small | large | x-large | xx-large | smaller | larger | length | initial | inherit;
*
* Initial: medium
* Applies to: all elements
* Inherited: yes
* Percentages: refer to inherited font size
* Media: visual
* Computed value: absolute length
*
*
*
* @author WFF
* @since 1.0.0
*/
public class FontSize extends AbstractCssProperty {
private static final long serialVersionUID = 1_0_0L;
public static final String INITIAL = "initial";
public static final String INHERIT = "inherit";
public static final String MEDIUM = "medium";
public static final String XX_SMALL = "xx-small";
public static final String X_SMALL = "x-small";
public static final String SMALL = "small";
public static final String LARGE = "large";
public static final String X_LARGE = "x-large";
public static final String XX_LARGE = "xx-large";
public static final String SMALLER = "smaller";
public static final String LARGER = "larger";
private static final List PREDEFINED_CONSTANTS = Arrays.asList(
INITIAL, INHERIT, MEDIUM, XX_SMALL, X_SMALL, SMALL, LARGE, X_LARGE,
XX_LARGE, SMALLER, LARGER);
private String cssValue;
private Float value;
private CssLengthUnit cssLengthUnit;
/**
* The {@code auto} will be set as the value
*/
public FontSize() {
setCssValue(MEDIUM);
}
/**
* @param cssValue
* the css value to set.
*/
public FontSize(final String cssValue) {
setCssValue(cssValue);
}
/**
* @param fontSizeCss
* the {@code FontSize} object from which the cssValue to
* set.And, {@code null} will throw {@code NullValueException}
*/
public FontSize(final FontSize fontSizeCss) {
if (fontSizeCss == null) {
throw new NullValueException("fontSizeCss can not be null");
}
setCssValue(fontSizeCss.getCssValue());
}
/**
* @param percent
* the percentage value to set. The cssLengthUnit will
* automatically set to %.
* @since 1.0.0
* @author WFF
*/
public FontSize(final float percent) {
cssLengthUnit = CssLengthUnit.PER;
value = percent;
cssValue = percent + "" + cssLengthUnit;
}
/**
* @param value
* @param cssLengthUnit
*/
public FontSize(final float value, final CssLengthUnit cssLengthUnit) {
this.value = value;
this.cssLengthUnit = cssLengthUnit;
cssValue = value + "" + cssLengthUnit;
}
/**
* @param value
* @param cssLengthUnit
* @return the current object
* @since 1.0.0
* @author WFF
*/
public FontSize setValue(final float value,
final CssLengthUnit cssLengthUnit) {
this.value = value;
this.cssLengthUnit = cssLengthUnit;
cssValue = value + "" + cssLengthUnit;
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
return this;
}
/**
* @param percent
* the percent to set
* @since 1.0.0
* @author WFF
*/
public void setPercent(final float percent) {
value = percent;
cssLengthUnit = CssLengthUnit.PER;
cssValue = percent + "" + cssLengthUnit;
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
}
/*
* (non-Javadoc)
*
* @see com.webfirmframework.wffweb.css.CssProperty#getCssName()
*
* @since 1.0.0
*
* @author WFF
*/
@Override
public String getCssName() {
return CssNameConstants.FONT_SIZE;
}
/*
* (non-Javadoc)
*
* @see com.webfirmframework.wffweb.css.CssProperty#getCssValue()
*
* @since 1.0.0
*
* @author WFF
*/
@Override
public String getCssValue() {
return cssValue;
}
@Override
public String toString() {
return getCssName() + ": " + getCssValue();
}
/**
* gets the fontSize in float value. {@code FontSize#getUnit()} should be
* used to get the cssLengthUnit for this value.
*
* @return the value in float or null if the cssValue is
* initial or inherit.
* @since 1.0.0
* @author WFF
*/
public Float getValue() {
return value;
}
/**
* @return the cssLengthUnit {@code PX}/{@code PER}, or {@code null} if the
* value is any inbuilt value like {@code inherit}.
* @since 1.0.0
* @author WFF
*/
public CssLengthUnit getUnit() {
return cssLengthUnit;
}
/**
* @param cssValue
* the value should be in the format of 55px or
* 95%. {@code null} is considered as an invalid
* value and it will throw {@code NullValueException}.
* @since 1.0.0
* @author WFF
*/
@Override
public FontSize setCssValue(final String cssValue) {
try {
if (cssValue == null) {
throw new NullValueException(
"null is an invalid value. The value format should be as for example 75px or 85%. Or, initial/inherit.");
} else {
final String trimmedCssValue = TagStringUtil
.toLowerCase(cssValue.trim());
boolean invalidValue = true;
for (final CssLengthUnit cssLengthUnit : CssLengthUnit.values()) {
final String unit = cssLengthUnit.getUnit();
if (trimmedCssValue.endsWith(unit)) {
final String valueOnly = trimmedCssValue.replaceFirst(
unit, "");
try {
value = Float.parseFloat(valueOnly);
} catch (final NumberFormatException e) {
break;
}
this.cssLengthUnit = cssLengthUnit;
this.cssValue = cssValue;
invalidValue = false;
break;
}
}
if (PREDEFINED_CONSTANTS.contains(trimmedCssValue)) {
this.cssValue = trimmedCssValue;
cssLengthUnit = null;
value = null;
invalidValue = false;
}
if (invalidValue) {
throw new InvalidValueException(
cssValue
+ " is an invalid value. The value format should be as for example 75px, 85%, initial, inherit etc..");
}
}
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
} catch (final NumberFormatException e) {
throw new InvalidValueException(
cssValue
+ " is an invalid value. The value format should be as for example 75px or 85%. Or, initial/inherit.",
e);
}
return this;
}
/**
* sets as {@code initial}
*
* @since 1.0.0
* @author WFF
*/
public void setAsInitial() {
setCssValue(INITIAL);
}
/**
* sets as {@code inherit}
*
* @since 1.0.0
* @author WFF
*/
public void setAsInherit() {
setCssValue(INHERIT);
}
/**
* sets as {@code medium}.
*
* @since 1.0.0
* @author WFF
*/
public void setAsMedium() {
setCssValue(MEDIUM);
}
/**
* sets as {@code xx-small}.
*
* @since 1.0.0
* @author WFF
*/
public void setAsXxSmall() {
setCssValue(XX_SMALL);
}
/**
* sets as {@code x-small}.
*
* @since 1.0.0
* @author WFF
*/
public void setAsXSmall() {
setCssValue(X_SMALL);
}
/**
* sets as {@code small}.
*
* @since 1.0.0
* @author WFF
*/
public void setAsSmall() {
setCssValue(SMALL);
}
/**
* sets as {@code large}.
*
* @since 1.0.0
* @author WFF
*/
public void setAsLarge() {
setCssValue(LARGE);
}
/**
* sets as {@code x-large}.
*
* @since 1.0.0
* @author WFF
*/
public void setAsXLarge() {
setCssValue(X_LARGE);
}
/**
* sets as {@code xx-large}.
*
* @since 1.0.0
* @author WFF
*/
public void setAsXxLarge() {
setCssValue(XX_LARGE);
}
/**
* sets as {@code smaller}.
*
* @since 1.0.0
* @author WFF
*/
public void setAsSmaller() {
setCssValue(SMALLER);
}
/**
* sets as {@code larger}.
*
* @since 1.0.0
* @author WFF
*/
public void setAsLarger() {
setCssValue(LARGER);
}
/**
* validates if the given cssValue is valid for this class.
*
* @param cssValue
* the value to check.
* @return true if valid and false if invalid.
* @author WFF
* @since 1.0.0
*/
public static boolean isValid(final String cssValue) {
final String trimmedCssValue = TagStringUtil.toLowerCase(cssValue
.trim());
if (trimmedCssValue.contains(" ")) {
return false;
}
for (final CssLengthUnit cssLengthUnit : CssLengthUnit.values()) {
final String unit = cssLengthUnit.getUnit();
if (trimmedCssValue.endsWith(unit)) {
final String valueOnly = trimmedCssValue.replaceFirst(unit, "");
try {
Float.parseFloat(valueOnly);
} catch (final NumberFormatException e) {
break;
}
return true;
}
}
if (PREDEFINED_CONSTANTS.contains(trimmedCssValue)) {
return true;
}
return false;
}
}
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