/*******************************************************************************
* 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.pagedesigner.ui.common;
import java.io.File;
import java.util.Arrays;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IJarEntryResource;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.ui.JavaElementLabelProvider;
import org.eclipse.jdt.ui.StandardJavaElementContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.jst.jsf.common.ui.IFileFolderConstants;
import org.eclipse.jst.pagedesigner.editors.pagedesigner.PageDesignerResources;
import org.eclipse.jst.pagedesigner.utils.JavaUtil;
import org.eclipse.swt.widgets.Shell;
/**
* This dialog will let client to select resources that located on a
* IJavaProject classpath, the client can provide a list of files suffixs to
* filter.
*
* @author mengbo
*/
// TODO: Since many jar files might do nothing to do with client's selection, we
// may need to provides more filter choice
// to clients to exclude unnecessary jar files, such as that are located in JDK
// dir.
public class ResourceOnClasspathDialog extends TreeViewerSelectionDialog {
// ResourcesOnClasspathDialog.statusMessage = Please select a property file
private static final String STATUS_MESSAGE = PageDesignerResources
.getInstance()
.getString("ResourcesOnClasspathDialog.statusMessage"); //$NON-NLS-1$
private IJavaProject _javaProject;
// the suffixs of files that can be selected
private String _suffixs[]; // =
// IJMTConstants.DEFAULT_SUFFIX;
private ResourceOnClasspathFilter _filter;
// Client doesn't need to know it.
class ResourceOnClasspathFilter extends ViewerFilter {
StandardJavaElementContentProvider _javaContentProvider;
/**
* @param contentProvider
*/
public ResourceOnClasspathFilter(
StandardJavaElementContentProvider contentProvider) {
_javaContentProvider = contentProvider;
}
/**
* Set the suffixs of files need to be selected.
*
* @param suffixs
*/
public void setSuffixs(String suffixs[]) {
_suffixs = suffixs;
}
/**
* @param contentProvider
* The _javaContentProvider to set.
*/
public void setJavaContentProvider(
StandardJavaElementContentProvider contentProvider) {
_javaContentProvider = contentProvider;
}
/**
* @param project
* The _javaProject to set.
*/
public void setJavaProject(IJavaProject project) {
_javaProject = project;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer,
* java.lang.Object, java.lang.Object)
*/
public boolean select(Viewer viewer, Object parentElement,
Object element) {
// TODO: This logic can be improved by add caching mechanism
if (element instanceof IJavaProject) {
String currentProjectName = ((IJavaProject) element)
.getProject().getFullPath().toString().trim();
String projectName = _javaProject.getProject().getFullPath()
.toString().trim();
if (projectName.equalsIgnoreCase(currentProjectName)) {
return true;
}
return false;
} else if (element instanceof IResource) {
if (((_javaProject != null) && !_javaProject
.isOnClasspath((IResource) element))) {
return false;
}
if (element instanceof IFile) {
if (Arrays.asList(_suffixs).contains(
((IFile) element).getFileExtension())) {
return true;
}
}
return false;
}
if (element instanceof IJarEntryResource) {
String ext = ((IJarEntryResource) element).getFullPath()
.getFileExtension();
if (ext != null && Arrays.asList(_suffixs).contains(ext)) {
return true;
}
return false;
}
if (!(element instanceof IJavaElement)) {
return false;
}
if (((_javaProject != null) && !_javaProject
.isOnClasspath((IJavaElement) element))) {
return false;
}
IJavaElement javaElement = (IJavaElement) element;
Object[] children = null;
switch (javaElement.getElementType()) {
case IJavaElement.PACKAGE_FRAGMENT_ROOT:
children = _javaContentProvider.getChildren(javaElement);
break;
case IJavaElement.IMPORT_CONTAINER:
return true;
case IJavaElement.PACKAGE_FRAGMENT:
children = _javaContentProvider.getChildren(javaElement);
break;
case IJavaElement.CLASS_FILE:
if (Arrays.asList(_suffixs).contains(
IFileFolderConstants.EXT_CLASS)) {
return true;
}
return false;
case IJavaElement.COMPILATION_UNIT:
String ext = javaElement.getPath().getFileExtension();
if (ext != null && Arrays.asList(_suffixs).contains(ext)) {
return true;
}
return false;
default:
return false;
}
for (int i = 0; i < children.length; i++) {
if (select(viewer, javaElement, children[i])) {
return true;
}
}
// Either the resouce or its children are not for displaying.
return false;
}
}
/**
* Set the suffixs of files need to be selected.
*
* @param suffixs
*/
public void setSuffixs(String suffixs[]) {
_suffixs = suffixs;
_filter.setSuffixs(suffixs);
}
/**
* @param parentShell
* @param project
*/
public ResourceOnClasspathDialog(Shell parentShell, IJavaProject project) {
super(parentShell, STATUS_MESSAGE);
// set provider and filter
StandardJavaElementContentProvider contentProvider = new StandardJavaElementContentProvider();
setContentProvider(contentProvider);
setLabelProvider(new JavaElementLabelProvider());
_filter = new ResourceOnClasspathFilter(contentProvider);
setFilter(_filter);
// store the project
_javaProject = project;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.dialogs.SelectionDialog#getResult()
*/
public Object[] getResult() {
Object[] objects = super.getResult();
if (objects == null || objects.length == 0) {
return null;
}
IPath path = JavaUtil.getPathOnClasspath(_javaProject, objects[0]);
String result = null;
if (path.segmentCount() == 0) {
return new Object[] { "" }; //$NON-NLS-1$
}
path = path.removeFileExtension();
result = path.toOSString();
result = result.replace(File.separatorChar, '.');
return new Object[] { result };
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.ui.common.SelectionTreeViewerDialog#isValidSelection()
*/
protected boolean isValidSelection(Object selection) {
String extension = JavaUtil.getPathOnClasspath(_javaProject, selection)
.getFileExtension();
return (extension != null && Arrays.asList(_suffixs)
.contains(extension));
}
protected Object findInputElement() {
Object input = ResourcesPlugin.getWorkspace();
if (input instanceof IWorkspace) {
return JavaCore.create(((IWorkspace) input).getRoot());
} else if (input instanceof IContainer) {
IJavaElement element = JavaCore.create((IContainer) input);
if (element != null && element.exists())
return element;
return input;
}
return JavaCore.create(ResourcesPlugin.getWorkspace().getRoot());
}
}