org.bonitasoft.studio.data.provider.PojoBrowserContentProvider.java Source code

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Here is the source code for org.bonitasoft.studio.data.provider.PojoBrowserContentProvider.java

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/**
 * Copyright (C) 2010 BonitaSoft S.A.
 * BonitaSoft, 31 rue Gustave Eiffel - 38000 Grenoble
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2.0 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.bonitasoft.studio.data.provider;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.bonitasoft.studio.common.log.BonitaStudioLog;
import org.bonitasoft.studio.common.repository.RepositoryManager;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.core.Flags;
import org.eclipse.jdt.core.IField;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IMember;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.PlatformUI;

/**
 * @author Mickael Istria
 * 
 */
public class PojoBrowserContentProvider implements ITreeContentProvider {

    private IType type;

    public IType getType() {
        return type;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.viewers.IContentProvider#dispose()
     */
    public void dispose() {
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface
     * .viewers.Viewer, java.lang.Object, java.lang.Object)
     */
    public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.ITreeContentProvider#getElements(java.lang.
     * Object)
     */
    public Object[] getElements(Object inputElement) {
        if (inputElement instanceof String) {
            try {
                type = RepositoryManager.getInstance().getCurrentRepository().getJavaProject()
                        .findType(inputElement.toString());
            } catch (JavaModelException e1) {
                BonitaStudioLog.error(e1);
            }
            return new Object[] { type };
        } else if (inputElement instanceof IType) {
            return getChildren(inputElement);
        }
        return null;
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.
     * Object)
     */
    public Object[] getChildren(Object parentElement) {
        try {
            if (parentElement instanceof IMethod) {
                String className = Signature.toString(((IMethod) parentElement).getReturnType());
                IType type = null;
                try {
                    type = RepositoryManager.getInstance().getCurrentRepository().getJavaProject()
                            .findType(className);
                } catch (JavaModelException e1) {
                    BonitaStudioLog.error(e1);
                }
                return getChildren(type);
            } else if (parentElement instanceof IField) {
                return null;// getChildren(((IField)parentElement).getJavaModel().getTgetT)
            } else if (parentElement instanceof IType) {
                final IType type = (IType) parentElement;
                final List<IMember> res = new ArrayList<IMember>();

                PlatformUI.getWorkbench().getProgressService().busyCursorWhile(new IRunnableWithProgress() {

                    public void run(IProgressMonitor monitor)
                            throws InvocationTargetException, InterruptedException {
                        try {
                            for (IField field : type.getFields()) {
                                if (Flags.isPublic(field.getFlags())) {
                                    res.add(field);
                                }
                            }
                            for (IMethod method : type.getMethods()) {
                                if (method.getParameterNames().length == 0 && Flags.isPublic(method.getFlags())
                                        && !method.getReturnType().equals("V")) {
                                    res.add(method);
                                }
                            }
                        } catch (CoreException e) {
                            BonitaStudioLog.error(e);
                        }
                    }
                });

                Collections.sort(res, new Comparator<IMember>() {

                    public int compare(IMember arg0, IMember arg1) {
                        if (arg0.getElementType() == arg1.getElementType()) {
                            return arg0.getElementName().compareTo(arg1.getElementName());
                        } else if (arg0.getElementType() == IJavaElement.FIELD) {
                            return -1;
                        } else {
                            return 1;
                        }
                    }

                });
                return res.toArray();
            } else {
                return null;
            }
        } catch (Exception ex) {
            BonitaStudioLog.error(ex);
            return null;
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object
     * )
     */
    public Object getParent(Object element) {
        return null;
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.
     * Object)
     */
    public boolean hasChildren(Object element) {
        return !(element instanceof IMethod);
    }

}