subprojects/groovy-swing/src/main/groovy/groovy/swing/factory/LayoutFactory.groovy

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.*
import java.awt.*

class LayoutFactory extends groovy.swing.factory.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)
        }
    }

}