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Groovy example source code file (LayoutFactory.groovy)

This example Groovy source code file (LayoutFactory.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

awt, beanfactory, class, container, default_delegate_property_constraint, default_delegate_property_constraint, delegate_property_constraint, gui, layoutfactory, layoutfactory, map, object, object, rootpanecontainer, rootpanecontainer, string, swing

The Groovy LayoutFactory.groovy source code

/*
 * Copyright 2003-2007 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 java.awt.Container
import javax.swing.RootPaneContainer

class LayoutFactory extends BeanFactory {

    def contextProps
    public static final String DELEGATE_PROPERTY_CONSTRAINT = "_delegateProperty:Constrinat";
    public static final String DEFAULT_DELEGATE_PROPERTY_CONSTRAINT = "constraints";


    public LayoutFactory(Class klass) {
        super(klass)
    }

    public LayoutFactory(Class klass, boolean leaf) {
        super(klass, leaf)
    }

    public Object newInstance(FactoryBuilderSupport builder, Object name, Object value, Map attributes) {
        builder.context[DELEGATE_PROPERTY_CONSTRAINT] = attributes.remove("constraintsProperty") ?: DEFAULT_DELEGATE_PROPERTY_CONSTRAINT
        Object o = super.newInstance(builder, name, value, attributes);
        addLayoutProperties(builder.getContext());
        return o;
    }

    public void addLayoutProperties(context, Class layoutClass) {
        if (contextProps == null) {
            contextProps = [:]
            layoutClass.fields.each {
                def name = it.name
                if (name.toUpperCase() == name) {
                    contextProps.put(name, layoutClass."$name")
                }
            }
        }

        context.putAll(contextProps)
    }

    public void addLayoutProperties(context) {
        addLayoutProperties(context, beanClass)
    }

    public void setParent(FactoryBuilderSupport builder, Object parent, Object child) {
        if (parent instanceof Container) {
            getLayoutTarget(parent).layout = child
        }
    }

    public static Container getLayoutTarget(Container parent) {
        if (parent instanceof RootPaneContainer) {
            RootPaneContainer rpc = (RootPaneContainer) parent;
            parent = rpc.getContentPane();
        }
        return parent;
    }

    public static constraintsAttributeDelegate(def builder, def node, def attributes) {
        def constraintsAttr = builder?.context?.getAt(DELEGATE_PROPERTY_CONSTRAINT) ?: DEFAULT_DELEGATE_PROPERTY_CONSTRAINT
        if (attributes.containsKey(constraintsAttr)) {
            builder.context.constraints = attributes.remove(constraintsAttr)
        }
    }

}

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