groovy.swing.factory.EmptyBorderFactory.groovy Maven / Gradle / Ivy
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/*
* Copyright 2007-2012 the original author or authors.
*
* 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.
*/
package groovy.swing.factory
import javax.swing.BorderFactory
/**
* accepts values in lieu of attributes:
* int - all of top, left, bottom, right
* [int, int, int, int] - top, left, bottom, right
* accepts attributes when no value present:
* top: int, left: int, bottom: int, right: int
*
*/
class EmptyBorderFactory extends SwingBorderFactory {
public Object newInstance(FactoryBuilderSupport builder, Object name, Object value, Map attributes) {
builder.context.applyBorderToParent = attributes.remove('parent')
if (!attributes) {
if (value instanceof Integer) {
return BorderFactory.createEmptyBorder(value, value, value, value)
} else if (value instanceof List && value.size() == 4) {
// we need GDK methods on Collection for boolean .any{} and boolean .all{} :(
boolean ints = true
value.each {ints = ints & it instanceof Integer}
if (ints) {
return BorderFactory.createEmptyBorder(*value)
}
}
throw new RuntimeException("$name only accepts a single integer or an array of four integers as a value argument")
}
if (value == null) {
int top = attributes.remove("top")
int left = attributes.remove("left")
int bottom = attributes.remove("bottom")
int right = attributes.remove("right")
if ((top == null) || (left == null) || (bottom == null) || (right == null) || attributes) {
throw new RuntimeException("When $name is called it must be call with top:, left:, bottom:, right:, and no other attributes")
}
return BorderFactory.createEmptyBorder(top, left, bottom, right)
}
throw new RuntimeException("$name cannot be called with both an argulent value and attributes")
}
}