com.github.lgooddatepicker.components.DatePickerBeanInfo Maven / Gradle / Ivy
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Java 8 Swing Date Picker. Easy to use, good looking, nice features, and
localized. Uses the JSR-310 standard.
package com.github.lgooddatepicker.components;
import java.beans.BeanDescriptor;
import java.beans.BeanInfo;
import java.beans.EventSetDescriptor;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.MethodDescriptor;
import java.beans.PropertyDescriptor;
import java.beans.SimpleBeanInfo;
import java.awt.Image;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import static java.beans.BeanInfo.ICON_COLOR_16x16;
import static java.beans.BeanInfo.ICON_COLOR_32x32;
import static java.beans.BeanInfo.ICON_MONO_16x16;
import static java.beans.BeanInfo.ICON_MONO_32x32;
import com.github.lgooddatepicker.zinternaltools.Pair;
/**
* DatePickerBeanInfo, This class returns JavaBean information for the matching bean class.
*
* The class methods will return default BeanInfo Introspector information for properties, methods,
* and events, plus any customizations that are applied on top of the default Introspector data set.
*/
public class DatePickerBeanInfo extends SimpleBeanInfo {
///////////////////////////////////////////////////////////////////////////////////////////////
// Start: Custom settings.
///////////////////////////////////////////////////////////////////////////////////////////////
/**
* iconInformation, This holds all the information for the image icons. The map key is the
* BeanInfo icon type. The pair string is the path to the matching icon resource. The pair image
* will hold the matching icon image, if it has been loaded. (The image will be null until the
* first time it is loaded.)
*/
private static HashMap> iconInformation
= new HashMap>() {
{
put(ICON_MONO_16x16, new Pair("/images/DatePickerIcon 16x16.png", null));
put(ICON_COLOR_16x16, new Pair("/images/DatePickerIcon 16x16.png", null));
put(ICON_MONO_32x32, new Pair("/images/DatePickerIcon 32x32.png", null));
put(ICON_COLOR_32x32, new Pair("/images/DatePickerIcon 32x32.png", null));
}
};
/**
* preferredProperties, This lists all the properties that should be marked as preferred, as
* lowercase strings. Any properties that are not in this list, will be marked as "not
* preferred". (All of the defaults for preferred properties are overwritten.)
*/
private static HashSet preferredProperties = new HashSet(Arrays.asList(
"date", "text"));
/**
* propertyDescriptions, These are the descriptions to add to the properties. The key is the
* property name in all lowercase. The value is the property description.
*/
private static HashMap propertyDescriptions = new HashMap() {
{
put("date", "The last valid date.");
put("text", "The date picker text.");
}
};
/**
* targetClass, This is the class for which we are providing the BeanInfo.
*/
private static Class targetClass = DatePicker.class;
///////////////////////////////////////////////////////////////////////////////////////////////
// End: Custom settings.
///////////////////////////////////////////////////////////////////////////////////////////////
/**
* zDefaultEventIndex, This holds the BeanInfo defaultEventIndex. This is initialized when the
* class is first loaded, and not changed afterwards.
*/
private static int zDefaultEventIndex = -1;
/**
* zDefaultPropertyIndex, This holds the BeanInfo defaultPropertyIndex. This is initialized when
* the class is first loaded, and not changed afterwards.
*/
private static int zDefaultPropertyIndex = -1;
/**
* zPropertyDescriptorArray, This holds the array of BeanInfo property descriptors. This is
* initialized when the class is first loaded, and not changed afterwards.
*/
static private PropertyDescriptor[] zPropertyDescriptorArray;
/**
* Static Initializer, This code is run when the class is first accessed or instantiated. This
* initializes all the needed BeanInfo arrays.
*/
static {
try {
BeanInfo info = Introspector.getBeanInfo(targetClass);
zPropertyDescriptorArray = info.getPropertyDescriptors();
} catch (IntrospectionException ex) {
throw new RuntimeException(ex.getMessage());
}
for (PropertyDescriptor propertyDescriptor : zPropertyDescriptorArray) {
String propertyName = propertyDescriptor.getName().toLowerCase();
propertyDescriptor.setPreferred(preferredProperties.contains(propertyName));
if (propertyDescriptions.containsKey(propertyName)) {
propertyDescriptor.setShortDescription(propertyDescriptions.get(propertyName));
}
}
}
/**
* getIcon, Returns the requested BeanInfo icon type, or null if an icon does not exist or
* cannot be retrieved.
*/
@Override
public Image getIcon(int iconType) {
Pair pair = iconInformation.get(iconType);
String imagePath = pair.first;
Image imageOrNull = pair.second;
if ((imageOrNull == null) && (imagePath != null)) {
imageOrNull = loadImage(imagePath);
}
return imageOrNull;
}
/**
* getBeanDescriptor, Returns the BeanInfo BeanDescriptor, or null to use automatic
* introspection.
*/
@Override
public BeanDescriptor getBeanDescriptor() {
return null;
}
/**
* getPropertyDescriptors, Returns the BeanInfo PropertyDescriptor array, or null to use
* automatic introspection. Each array element may be a PropertyDescriptor, or the
* IndexedPropertyDescriptor subclass of PropertyDescriptor.
*/
@Override
public PropertyDescriptor[] getPropertyDescriptors() {
return zPropertyDescriptorArray;
}
/**
* getEventSetDescriptors, Returns the BeanInfo EventSetDescriptor array, or null to use
* automatic introspection.
*/
@Override
public EventSetDescriptor[] getEventSetDescriptors() {
return null;
}
/**
* getMethodDescriptors, Returns the BeanInfo MethodDescriptor array, or null to use automatic
* introspection.
*/
@Override
public MethodDescriptor[] getMethodDescriptors() {
return null;
}
/**
* getDefaultPropertyIndex, Returns the BeanInfo defaultPropertyIndex, or -1 if there is no
* default property.
*/
@Override
public int getDefaultPropertyIndex() {
return zDefaultPropertyIndex;
}
/**
* getDefaultEventIndex, Returns the BeanInfo defaultEventIndex, or -1 if there is no default
* property.
*/
@Override
public int getDefaultEventIndex() {
return zDefaultEventIndex;
}
}