org.eclipse.jst.jsf.common.ui.internal.dialogfield.JavaUIHelper.java Source code

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Here is the source code for org.eclipse.jst.jsf.common.ui.internal.dialogfield.JavaUIHelper.java

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/*******************************************************************************
 * Copyright (c) 2006 Sybase, Inc. and others.
 *
 * 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:
 *     Sybase, Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.jsf.common.ui.internal.dialogfield;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.search.IJavaSearchScope;
import org.eclipse.jdt.core.search.SearchEngine;
import org.eclipse.jdt.ui.JavaUI;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jst.jsf.common.ui.JSFUICommonPlugin;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.SelectionDialog;
import org.eclipse.ui.ide.IDE;

/**
 * @author mengbo
 */
public final class JavaUIHelper {
    /**
     * @param project
     * @param className
     */
    static void doOpenClass(IProject project, String className) {
        String path = className.replace('.', '/') + ".java"; //$NON-NLS-1$
        try {
            if (project.hasNature(JavaCore.NATURE_ID)) {
                IJavaProject javaProject = JavaCore.create(project);
                IJavaElement result = javaProject.findElement(new Path(path));
                JavaUI.openInEditor(result);
            } else {
                IResource resource = project.findMember(new Path(path));
                if (resource instanceof IFile) {
                    IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
                    IDE.openEditor(page, (IFile) resource, true);
                }
            }
        } catch (PartInitException e) {
            e.printStackTrace();// PDEPlugin.logException(e);
        } catch (JavaModelException e) {
            e.printStackTrace();// Display.getCurrent().beep();
        } catch (CoreException e) {
            e.printStackTrace();// PDEPlugin.logException(e);
        }
    }

    /**
     * @param project
     * @param className
     * @return true if the class exists in project
     */
    static boolean doesClassExist(IProject project, String className) {
        String path = className.replace('.', '/') + ".java"; //$NON-NLS-1$
        try {
            if (project.hasNature(JavaCore.NATURE_ID)) {
                IJavaProject javaProject = JavaCore.create(project);

                IJavaElement result = javaProject.findElement(new Path(path));
                return result != null;
            }
            IResource resource = project.findMember(new Path(path));
            return resource != null;
        } catch (JavaModelException e) {
            return false;
        } catch (CoreException e) {
            return false;
        }
    }

    /**
     * @param shell
     * @param searchScope
     * @param typeFlag
     * @return the selection dialog
     */
    static SelectionDialog openSelectionDialog(Shell shell, IJavaSearchScope searchScope, int typeFlag) {
        try {
            return JavaUI.createTypeDialog(shell, new ProgressMonitorDialog(shell), searchScope, typeFlag, false);
        } catch (JavaModelException e) {
            JSFUICommonPlugin.getLogger(JavaUIHelper.class).error(e);
            return null;
        }
    }

    /**
     * @param shell
     * @param project
     * @param superType
     * @param typeFlag
     * @return the selection  dialog
     */
    public static SelectionDialog openSelectionDialog(Shell shell, IProject project, String superType,
            int typeFlag) {
        IJavaSearchScope searchScope = findSearchScope(project, superType);
        return openSelectionDialog(shell, searchScope, typeFlag);
    }

    /**
     * @param project
     * @param superType
     * @return the search scope
     */
    static IJavaSearchScope findSearchScope(IProject project, String superType) {
        if (project != null) {
            if (superType == null || "".equals(superType)) { //$NON-NLS-1$
                superType = "java.lang.Object";//$NON-NLS-1$
            }
            return new JavaSearchScope(project, superType);
        }
        return SearchEngine.createWorkspaceScope();
    }

    private JavaUIHelper() {
        // static helper, no instantiation
    }
}