org.eclipse.wb.internal.rcp.databinding.ui.contentproviders.ObservableDetailUiContentProvider.java Source code

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Here is the source code for org.eclipse.wb.internal.rcp.databinding.ui.contentproviders.ObservableDetailUiContentProvider.java

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/*******************************************************************************
 * Copyright (c) 2011 Google, Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Google, Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.wb.internal.rcp.databinding.ui.contentproviders;

import com.google.common.collect.Lists;

import org.eclipse.wb.internal.core.databinding.ui.editor.contentproviders.ChooseClassAndPropertiesConfiguration;
import org.eclipse.wb.internal.core.databinding.ui.editor.contentproviders.ChooseClassAndPropertiesConfiguration.LoadedPropertiesCheckedStrategy;
import org.eclipse.wb.internal.core.databinding.ui.editor.contentproviders.PropertyAdapter;
import org.eclipse.wb.internal.core.databinding.utils.CoreUtils;
import org.eclipse.wb.internal.rcp.databinding.DatabindingsProvider;
import org.eclipse.wb.internal.rcp.databinding.model.beans.bindables.BeanPropertyBindableInfo;
import org.eclipse.wb.internal.rcp.databinding.model.beans.bindables.PropertyBindableInfo;
import org.eclipse.wb.internal.rcp.databinding.model.beans.observables.DetailBeanObservableInfo;
import org.eclipse.wb.internal.rcp.databinding.model.widgets.input.AbstractViewerInputBindingInfo;
import org.eclipse.wb.internal.rcp.databinding.model.widgets.observables.ViewerObservableInfo;

import org.apache.commons.lang.ClassUtils;
import org.apache.commons.lang.StringUtils;

import java.util.Collections;
import java.util.List;

/**
 * Content provider for edit (choose detail property) {@link DetailBeanObservableInfo}.
 * 
 * @author lobas_av
 * @coverage bindings.rcp.ui
 */
public class ObservableDetailUiContentProvider extends ChooseClassAndTreePropertiesUiContentProvider2 {
    private final DetailBeanObservableInfo m_observable;
    private final DatabindingsProvider m_provider;

    ////////////////////////////////////////////////////////////////////////////
    //
    // Constructor
    //
    ////////////////////////////////////////////////////////////////////////////
    public ObservableDetailUiContentProvider(ChooseClassAndPropertiesConfiguration configuration,
            DetailBeanObservableInfo observable, DatabindingsProvider provider) {
        super(configuration);
        configuration.addDefaultStart("detail(");
        m_observable = observable;
        m_provider = provider;
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Update
    //
    ////////////////////////////////////////////////////////////////////////////
    public void updateFromObject() throws Exception {
        String propertyReference = m_observable.getDetailPropertyReference();
        // sets property reference and type
        if (propertyReference == null) {
            // calculate type over viewer input element type
            if (m_observable.getMasterObservable() instanceof ViewerObservableInfo) {
                Class<?> elementType = AbstractViewerInputBindingInfo
                        .getViewerInutElementType(m_observable.getMasterObservable(), m_provider);
                if (elementType == null) {
                    calculateFinish();
                } else {
                    setClassName(CoreUtils.getClassName(elementType));
                }
            } else {
                calculateFinish();
            }
        } else if (m_observable.getDetailBeanClass() == null) {
            // prepare property
            Class<?> propertyType = m_observable.getDetailPropertyType();
            String propertyName = StringUtils.substringBetween(propertyReference, "\"");
            BeanPropertyBindableInfo bindableProperty = new BeanPropertyBindableInfo(null, null, propertyName,
                    propertyType, propertyName);
            bindableProperty.setProperties(Collections.<PropertyBindableInfo>emptyList());
            PropertyAdapter property = new ObservePropertyAdapter(null, bindableProperty);
            // prepare fake class name
            String className = "detail(" + propertyReference + ", " + ClassUtils.getShortClassName(propertyType)
                    + ".class)";
            // sets class and property
            setClassNameAndProperty(className, property, false);
        } else {
            // set temporally None strategy for select detail property
            LoadedPropertiesCheckedStrategy strategy = m_configuration.getLoadedPropertiesCheckedStrategy();
            m_configuration.setLoadedPropertiesCheckedStrategy(LoadedPropertiesCheckedStrategy.None);
            // sets class and property
            setClassNameAndProperties(m_observable.getDetailBeanClass(), null,
                    Lists.newArrayList(propertyReference));
            // restore strategy
            m_configuration.setLoadedPropertiesCheckedStrategy(strategy);
        }
    }

    @Override
    protected void saveToObject(Class<?> choosenClass, List<PropertyAdapter> choosenProperties) throws Exception {
        if (choosenClass != null) {
            Object[] checkedElements = m_propertiesViewer.getCheckedElements();
            ObservePropertyAdapter adapter = (ObservePropertyAdapter) checkedElements[0];
            m_observable.setDetailPropertyType(adapter.getType());
            m_observable.setDetailPropertyReference(choosenClass, adapter.getProperty().getReference());
        }
    }
}