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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.css3;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.logging.Logger;
import com.webfirmframework.wffweb.InvalidValueException;
import com.webfirmframework.wffweb.NullValueException;
import com.webfirmframework.wffweb.css.CssNameConstants;
import com.webfirmframework.wffweb.css.core.AbstractCssProperty;
import com.webfirmframework.wffweb.css.core.CssProperty;
import com.webfirmframework.wffweb.informer.StateChangeInformer;
import com.webfirmframework.wffweb.util.TagStringUtil;
/**
*
*
* -webkit-flex: -webkit-flex-grow -webkit-flex-shrink -webkit-flex-basis|auto|initial|inherit;
*
* The flex property specifies the length of the item, relative to the rest of the flexible items inside the same container.
*
* The flex property is a shorthand for the -webkit-flex-grow, -webkit-flex-shrink, and the -webkit-flex-basis properties.
*
* Note: If the element is not a flexible item, the flex property has no effect.
* Default value: 0 1 auto
* Inherited: no
* Animatable: yes
* Version: CSS3
* JavaScript syntax: object.style.webkitFlex="1"
*
*
* The undefined value for -webkit-flex-grow, -webkit-flex-shrink and -webkit-flex-basis in -webkit-flex property is 1, 1 and 0% respectively.
*
*
*
* @author WFF
* @since 1.0.0
*/
public class WebkitFlex extends AbstractCssProperty
implements StateChangeInformer {
private static final long serialVersionUID = 1_0_0L;
public static final Logger LOGGER = Logger
.getLogger(WebkitFlex.class.getName());
public static final String INITIAL = "initial";
public static final String INHERIT = "inherit";
public static final String AUTO = "auto";
private static final List PREDEFINED_CONSTANTS = Arrays
.asList(INITIAL, INHERIT, AUTO);
private String cssValue;
private WebkitFlexGrow webkitFlexGrow;
private WebkitFlexShrink webkitFlexShrink;
private WebkitFlexBasis webkitFlexBasis;
/**
* The value 0 1 auto will be assigned as the cssValue.
*
* @author WFF
* @since 1.0.0
*/
public WebkitFlex() {
setCssValue("0 1 auto");
}
/**
* @param cssValue
* the css value to set.
*/
public WebkitFlex(final String cssValue) {
setCssValue(cssValue);
}
/**
* @param webkitFlex
* the {@code Flex} object from which the cssValue to set.And,
* {@code null} will throw {@code NullValueException}
*/
public WebkitFlex(final WebkitFlex webkitFlex) {
if (webkitFlex == null) {
throw new NullValueException("webkitFlex can not be null");
}
setCssValue(webkitFlex.getCssValue());
}
/*
* (non-Javadoc)
*
* @see com.webfirmframework.wffweb.css.CssProperty#getCssName()
*
* @since 1.0.0
*
* @author WFF
*/
@Override
public String getCssName() {
return CssNameConstants.WEBKIT_FLEX;
}
/*
* (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();
}
/**
* @param cssValue
* the value should be in the format of 1 1 auto or
* 1 1 15px. {@code null} is considered as an
* invalid value and it will throw {@code NullValueException}.
* @since 1.0.0
* @author WFF
*/
@Override
public WebkitFlex setCssValue(final String cssValue) {
final String trimmedCssValue;
if (cssValue == null) {
throw new NullValueException(
"null is an invalid value. The value format should be as for example \"0 1 auto\" or initial/inherit.");
} else if ((trimmedCssValue = TagStringUtil
.toLowerCase(cssValue.trim())).isEmpty()) {
throw new NullValueException(cssValue
+ " is an invalid value. The value format should be as for example \"0 1 auto\" or initial/inherit.");
}
final String[] cssValueParts = trimmedCssValue.split(" ");
if (cssValueParts.length > 1) {
if (trimmedCssValue.contains(WebkitFlexBasis.INITIAL)) {
throw new InvalidValueException(
"The string 'initial' makes the given cssValue invalid, please remove 'initial' from it and try.");
}
if (trimmedCssValue.contains(WebkitFlexBasis.INHERIT)) {
throw new InvalidValueException(
"The string 'inherit' makes the given cssValue invalid, please remove 'inherit' from it and try.");
}
} else {
if (PREDEFINED_CONSTANTS.contains(trimmedCssValue)) {
if (webkitFlexGrow != null) {
webkitFlexGrow.setAlreadyInUse(false);
webkitFlexGrow = null;
}
if (webkitFlexShrink != null) {
webkitFlexShrink.setAlreadyInUse(false);
webkitFlexShrink = null;
}
if (webkitFlexBasis != null) {
webkitFlexBasis.setAlreadyInUse(false);
webkitFlexBasis = null;
}
this.cssValue = trimmedCssValue;
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
return this;
}
}
WebkitFlexGrow webkitFlexGrow = null;
WebkitFlexShrink webkitFlexShrink = null;
WebkitFlexBasis webkitFlexBasis = null;
for (final String eachPart : cssValueParts) {
if (webkitFlexGrow == null && WebkitFlexGrow.isValid(eachPart)) {
if (this.webkitFlexGrow == null) {
webkitFlexGrow = new WebkitFlexGrow(eachPart);
webkitFlexGrow.setStateChangeInformer(this);
webkitFlexGrow.setAlreadyInUse(true);
} else {
this.webkitFlexGrow.setCssValue(eachPart);
webkitFlexGrow = this.webkitFlexGrow;
}
} else if (webkitFlexShrink == null
&& WebkitFlexShrink.isValid(eachPart)) {
if (this.webkitFlexGrow == null) {
webkitFlexShrink = new WebkitFlexShrink(eachPart);
webkitFlexShrink.setStateChangeInformer(this);
webkitFlexShrink.setAlreadyInUse(true);
} else {
this.webkitFlexShrink.setCssValue(eachPart);
webkitFlexShrink = this.webkitFlexShrink;
}
} else if (webkitFlexBasis == null
&& WebkitFlexBasis.isValid(eachPart)) {
if (this.webkitFlexBasis == null) {
webkitFlexBasis = new WebkitFlexBasis(eachPart);
webkitFlexBasis.setStateChangeInformer(this);
webkitFlexBasis.setAlreadyInUse(true);
} else {
this.webkitFlexBasis.setCssValue(eachPart);
webkitFlexBasis = this.webkitFlexBasis;
}
}
}
final StringBuilder cssValueBuilder = new StringBuilder();
boolean invalid = true;
if (webkitFlexGrow == null) {
if (this.webkitFlexGrow == null) {
webkitFlexGrow = new WebkitFlexGrow(1);
webkitFlexGrow.setStateChangeInformer(this);
webkitFlexGrow.setAlreadyInUse(true);
} else {
this.webkitFlexGrow.setValue(0);
webkitFlexGrow = this.webkitFlexGrow;
}
} else {
invalid = false;
}
cssValueBuilder.append(webkitFlexGrow.getCssValue());
cssValueBuilder.append(" ");
if (webkitFlexShrink == null) {
if (this.webkitFlexShrink == null) {
webkitFlexShrink = new WebkitFlexShrink(1);
webkitFlexShrink.setStateChangeInformer(this);
webkitFlexShrink.setAlreadyInUse(true);
} else {
this.webkitFlexShrink.setValue(1);
webkitFlexShrink = this.webkitFlexShrink;
}
} else {
invalid = false;
}
cssValueBuilder.append(webkitFlexShrink.getCssValue());
cssValueBuilder.append(" ");
if (webkitFlexBasis == null) {
if (cssValueParts.length == 3) {
throw new InvalidValueException(
"the given cssValue contains invalid flex-basis value.");
}
if (this.webkitFlexBasis == null) {
webkitFlexBasis = new WebkitFlexBasis(0);
webkitFlexBasis.setStateChangeInformer(this);
webkitFlexBasis.setAlreadyInUse(true);
} else {
this.webkitFlexBasis.setAsAuto();
webkitFlexBasis = this.webkitFlexBasis;
}
} else {
invalid = false;
}
cssValueBuilder.append(webkitFlexBasis.getCssValue());
if (invalid) {
throw new InvalidValueException(cssValue
+ " is an invalid value. The value format should be as for example \"0 1 auto\" or initial/inherit.");
}
this.cssValue = cssValueBuilder.toString();
webkitFlexGrow.setStateChangeInformer(this);
webkitFlexGrow.setAlreadyInUse(true);
webkitFlexShrink.setStateChangeInformer(this);
webkitFlexShrink.setAlreadyInUse(true);
webkitFlexBasis.setStateChangeInformer(this);
webkitFlexBasis.setAlreadyInUse(true);
this.webkitFlexGrow = webkitFlexGrow;
this.webkitFlexShrink = webkitFlexShrink;
this.webkitFlexBasis = webkitFlexBasis;
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
return this;
}
/**
* checks the given css value is valid for this class. It does't do a strict
* validation.
*
* @param cssValue
* @return
* @since 1.0.0
* @author WFF
*/
public static boolean isValid(final String cssValue) {
// TODO modify to make a strict validation
if (cssValue == null || cssValue.trim().isEmpty()) {
return false;
}
final String[] cssValueParts = cssValue.split(" ");
WebkitFlexGrow webkitFlexGrow = null;
WebkitFlexShrink webkitFlexShrink = null;
WebkitFlexBasis webkitFlexBasis = null;
for (final String eachPart : cssValueParts) {
boolean invalid = true;
if (webkitFlexGrow == null && WebkitFlexGrow.isValid(eachPart)) {
webkitFlexGrow = new WebkitFlexGrow(eachPart);
invalid = false;
} else if (webkitFlexShrink == null
&& WebkitFlexShrink.isValid(eachPart)) {
webkitFlexShrink = new WebkitFlexShrink(eachPart);
invalid = false;
} else if (webkitFlexBasis == null
&& WebkitFlexBasis.isValid(eachPart)) {
webkitFlexBasis = new WebkitFlexBasis(eachPart);
invalid = false;
}
if (invalid) {
return false;
}
}
return webkitFlexGrow != null || webkitFlexShrink != null
|| webkitFlexBasis != null;
}
/**
* sets as initial
*
* @since 1.0.0
* @author WFF
*/
public void setAsInitial() {
setCssValue(INITIAL);
}
/**
* sets as inherit
*
* @since 1.0.0
* @author WFF
*/
public void setAsInherit() {
setCssValue(INHERIT);
}
/**
* sets as auto
*
* @since 1.0.0
* @author WFF
*/
public void setAsAuto() {
setCssValue(AUTO);
}
public WebkitFlexBasis getWebkitFlexBasis() {
return webkitFlexBasis;
}
public WebkitFlexShrink getWebkitFlexShrink() {
return webkitFlexShrink;
}
public WebkitFlexGrow getWebkitFlexGrow() {
return webkitFlexGrow;
}
public WebkitFlex setWebkitFlexGrow(final WebkitFlexGrow webkitFlexGrow) {
if (webkitFlexGrow == null) {
throw new InvalidValueException("webkitFlexGrow cannot be null");
}
if (Objects.equals(this.webkitFlexGrow, webkitFlexGrow)) {
return this;
}
final StringBuilder cssValueBuilder = new StringBuilder();
if (this.webkitFlexGrow != null) {
this.webkitFlexGrow.setCssValue(webkitFlexGrow.getCssValue());
LOGGER.warning(
"copied the cssValue from the given webkitFlexGrow to the existing webkitFlexGrow object.");
} else {
if (webkitFlexGrow.isAlreadyInUse()) {
this.webkitFlexGrow = new WebkitFlexGrow(webkitFlexGrow);
this.webkitFlexGrow.setAlreadyInUse(true);
this.webkitFlexGrow.setStateChangeInformer(this);
LOGGER.warning(
"created a new object of WebkitFlexGrow as the given webkitFlexGrow object is already used by another object");
} else {
this.webkitFlexGrow = webkitFlexGrow;
this.webkitFlexGrow.setAlreadyInUse(true);
this.webkitFlexGrow.setStateChangeInformer(this);
}
}
cssValueBuilder.append(webkitFlexGrow.getCssValue());
cssValueBuilder.append(" ");
if (webkitFlexShrink == null) {
webkitFlexShrink = new WebkitFlexShrink(1);
webkitFlexShrink.setStateChangeInformer(this);
webkitFlexShrink.setAlreadyInUse(true);
}
cssValueBuilder.append(webkitFlexShrink.getCssValue());
cssValueBuilder.append(" ");
if (webkitFlexBasis == null) {
webkitFlexBasis = new WebkitFlexBasis(0);
webkitFlexBasis.setStateChangeInformer(this);
webkitFlexBasis.setAlreadyInUse(true);
}
cssValueBuilder.append(webkitFlexBasis.getCssValue());
cssValue = cssValueBuilder.toString();
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
return this;
}
public WebkitFlex setWebkitFlexShrink(
final WebkitFlexShrink webkitFlexShrink) {
if (webkitFlexShrink == null) {
throw new InvalidValueException("webkitFlexShrink cannot be null");
}
if (Objects.equals(this.webkitFlexShrink, webkitFlexShrink)) {
return this;
}
final StringBuilder cssValueBuilder = new StringBuilder();
if (webkitFlexGrow == null) {
webkitFlexGrow = new WebkitFlexGrow(1);
webkitFlexGrow.setStateChangeInformer(this);
webkitFlexGrow.setAlreadyInUse(true);
}
cssValueBuilder.append(webkitFlexGrow.getCssValue());
cssValueBuilder.append(" ");
if (this.webkitFlexShrink != null) {
this.webkitFlexShrink.setCssValue(webkitFlexShrink.getCssValue());
LOGGER.warning(
"copied the cssValue from the given webkitFlexShrink to the existing webkitFlexShrink object.");
} else {
if (webkitFlexShrink.isAlreadyInUse()) {
this.webkitFlexShrink = new WebkitFlexShrink(webkitFlexShrink);
this.webkitFlexShrink.setAlreadyInUse(true);
this.webkitFlexShrink.setStateChangeInformer(this);
LOGGER.warning(
"created a new object of WebkitFlexShrink as the given webkitFlexShrink object is already used by another object");
} else {
this.webkitFlexShrink = webkitFlexShrink;
this.webkitFlexShrink.setAlreadyInUse(true);
this.webkitFlexShrink.setStateChangeInformer(this);
}
}
cssValueBuilder.append(webkitFlexShrink.getCssValue());
cssValueBuilder.append(" ");
if (webkitFlexBasis == null) {
webkitFlexBasis = new WebkitFlexBasis(0);
webkitFlexBasis.setStateChangeInformer(this);
webkitFlexBasis.setAlreadyInUse(true);
}
cssValueBuilder.append(webkitFlexBasis.getCssValue());
cssValue = cssValueBuilder.toString();
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
return this;
}
public WebkitFlex setWebkitFlexBasis(
final WebkitFlexBasis webkitFlexBasis) {
if (webkitFlexBasis == null) {
throw new InvalidValueException("webkitFlexBasis cannot be null");
}
if (Objects.equals(this.webkitFlexBasis, webkitFlexBasis)) {
return this;
}
final StringBuilder cssValueBuilder = new StringBuilder();
if (webkitFlexGrow == null) {
webkitFlexGrow = new WebkitFlexGrow(1);
webkitFlexGrow.setStateChangeInformer(this);
webkitFlexGrow.setAlreadyInUse(true);
}
cssValueBuilder.append(webkitFlexGrow.getCssValue());
cssValueBuilder.append(" ");
if (webkitFlexShrink == null) {
webkitFlexShrink = new WebkitFlexShrink(1);
webkitFlexShrink.setStateChangeInformer(this);
webkitFlexShrink.setAlreadyInUse(true);
}
cssValueBuilder.append(webkitFlexShrink.getCssValue());
cssValueBuilder.append(" ");
if (this.webkitFlexBasis != null) {
this.webkitFlexBasis.setCssValue(webkitFlexBasis.getCssValue());
LOGGER.warning(
"copied the cssValue from the given webkitFlexBasis to the existing webkitFlexBasis object.");
} else {
if (webkitFlexBasis.isAlreadyInUse()) {
this.webkitFlexBasis = new WebkitFlexBasis(webkitFlexBasis);
this.webkitFlexBasis.setAlreadyInUse(true);
this.webkitFlexBasis.setStateChangeInformer(this);
LOGGER.warning(
"created a new object of WebkitFlexBasis as the given webkitFlexBasis object is already used by another object");
} else {
this.webkitFlexBasis = webkitFlexBasis;
this.webkitFlexBasis.setAlreadyInUse(true);
this.webkitFlexBasis.setStateChangeInformer(this);
}
}
cssValueBuilder.append(webkitFlexBasis.getCssValue());
cssValue = cssValueBuilder.toString();
if (getStateChangeInformer() != null) {
getStateChangeInformer().stateChanged(this);
}
return this;
}
@Override
public void stateChanged(final CssProperty stateChangedObject) {
if (stateChangedObject instanceof WebkitFlexGrow) {
final WebkitFlexGrow webkitFlexGrow = (WebkitFlexGrow) stateChangedObject;
final String cssValue = webkitFlexGrow.getCssValue();
if (WebkitFlexGrow.INITIAL.equals(cssValue)
|| WebkitFlexGrow.INHERIT.equals(cssValue)) {
throw new InvalidValueException(
"initial/inherit cannot be set as webkitFlexGrow cssValue");
}
final StringBuilder sb = new StringBuilder(
webkitFlexGrow.getCssValue());
sb.append(" ");
sb.append(webkitFlexShrink.getCssValue());
sb.append(" ");
sb.append(webkitFlexBasis.getCssValue());
this.cssValue = sb.toString();
} else if (stateChangedObject instanceof WebkitFlexShrink) {
final WebkitFlexShrink webkitFlexShrink = (WebkitFlexShrink) stateChangedObject;
final String cssValue = webkitFlexShrink.getCssValue();
if (WebkitFlexShrink.INITIAL.equals(cssValue)
|| WebkitFlexShrink.INHERIT.equals(cssValue)) {
throw new InvalidValueException(
"initial/inherit cannot be set as webkitFlexShrink cssValue");
}
final StringBuilder sb = new StringBuilder(
webkitFlexGrow.getCssValue());
sb.append(" ");
sb.append(webkitFlexShrink.getCssValue());
sb.append(" ");
sb.append(webkitFlexBasis.getCssValue());
this.cssValue = sb.toString();
} else if (stateChangedObject instanceof WebkitFlexBasis) {
final WebkitFlexBasis webkitFlexBasis = (WebkitFlexBasis) stateChangedObject;
final String cssValue = webkitFlexBasis.getCssValue();
if (WebkitFlexBasis.INITIAL.equals(cssValue)
|| WebkitFlexBasis.INHERIT.equals(cssValue)) {
throw new InvalidValueException(
"initial/inherit cannot be set as webkitFlexBasis cssValue");
}
final StringBuilder sb = new StringBuilder(
webkitFlexGrow.getCssValue());
sb.append(" ");
sb.append(webkitFlexShrink.getCssValue());
sb.append(" ");
sb.append(webkitFlexBasis.getCssValue());
this.cssValue = sb.toString();
}
}
/**
*
* @author WFF
* @since 1.0.0
*/
protected void addPredefinedConstant(final String constant) {
PREDEFINED_CONSTANTS.add(constant);
}
}
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