/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.ui.preferences;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.PropertyPage;
import org.eclipse.jdt.core.ClasspathContainerInitializer;
import org.eclipse.jdt.core.IClasspathAttribute;
import org.eclipse.jdt.core.IClasspathContainer;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
import org.eclipse.jdt.internal.corext.util.Messages;
import org.eclipse.jdt.launching.JavaRuntime;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.dialogs.StatusUtil;
import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
import org.eclipse.jdt.internal.ui.util.SWTUtil;
import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels;
import org.eclipse.jdt.internal.ui.wizards.IStatusChangeListener;
import org.eclipse.jdt.internal.ui.wizards.buildpaths.ArchiveFileFilter;
import org.eclipse.jdt.internal.ui.wizards.buildpaths.BuildPathSupport;
import org.eclipse.jdt.internal.ui.wizards.buildpaths.CPListElement;
public class NativeLibrariesPropertyPage extends PropertyPage implements IStatusChangeListener {
private NativeLibrariesConfigurationBlock fConfigurationBlock;
private boolean fIsValidElement;
private boolean fIsReadOnly;
private IClasspathEntry fEntry;
private IPath fContainerPath;
private String fInitialNativeLibPath;
/**
* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
*/
@Override
public void createControl(Composite parent) {
IJavaElement elem= getJavaElement();
try {
if (elem instanceof IPackageFragmentRoot) {
IPackageFragmentRoot root= (IPackageFragmentRoot) elem;
IClasspathEntry entry= JavaModelUtil.getClasspathEntry(root);
if (entry == null) {
fIsValidElement= false;
setDescription(PreferencesMessages.NativeLibrariesPropertyPage_invalidElementSelection_desription);
} else {
if (entry.getEntryKind() == IClasspathEntry.CPE_CONTAINER) {
fContainerPath= entry.getPath();
fEntry= handleContainerEntry(fContainerPath, elem.getJavaProject(), root.getPath());
fIsValidElement= fEntry != null && !fIsReadOnly;
} else {
fContainerPath= null;
fEntry= entry;
fIsValidElement= true;
}
}
} else {
fIsValidElement= false;
setDescription(PreferencesMessages.NativeLibrariesPropertyPage_invalidElementSelection_desription);
}
} catch (JavaModelException e) {
fIsValidElement= false;
setDescription(PreferencesMessages.NativeLibrariesPropertyPage_invalidElementSelection_desription);
}
super.createControl(parent);
}
private IClasspathEntry handleContainerEntry(IPath containerPath, IJavaProject jproject, IPath jarPath) throws JavaModelException {
ClasspathContainerInitializer initializer= JavaCore.getClasspathContainerInitializer(containerPath.segment(0));
IClasspathContainer container= JavaCore.getClasspathContainer(containerPath, jproject);
if (initializer == null || container == null) {
setDescription(Messages.format(PreferencesMessages.NativeLibrariesPropertyPage_invalid_container, BasicElementLabels.getPathLabel(containerPath, false)));
return null;
}
String containerName= container.getDescription();
IStatus status= initializer.getAttributeStatus(containerPath, jproject, JavaRuntime.CLASSPATH_ATTR_LIBRARY_PATH_ENTRY);
if (status.getCode() == ClasspathContainerInitializer.ATTRIBUTE_NOT_SUPPORTED) {
setDescription(Messages.format(PreferencesMessages.NativeLibrariesPropertyPage_not_supported, containerName));
return null;
}
IClasspathEntry entry= JavaModelUtil.findEntryInContainer(container, jarPath);
if (status.getCode() == ClasspathContainerInitializer.ATTRIBUTE_READ_ONLY) {
setDescription(Messages.format(PreferencesMessages.NativeLibrariesPropertyPage_read_only, containerName));
fIsReadOnly= true;
return entry;
}
Assert.isNotNull(entry);
return entry;
}
/**
* {@inheritDoc}
*/
@Override
protected Control createContents(Composite parent) {
if (!fIsValidElement || fIsReadOnly) {
Composite inner= new Composite(parent, SWT.NONE);
if (fIsReadOnly) {
GridLayout layout= new GridLayout();
layout.marginWidth= 0;
inner.setLayout(layout);
Label label= new Label(inner, SWT.WRAP);
label.setText(PreferencesMessages.NativeLibrariesPropertyPage_location_path);
Text location= new Text(inner, SWT.READ_ONLY | SWT.WRAP);
SWTUtil.fixReadonlyTextBackground(location);
GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
gd.widthHint= convertWidthInCharsToPixels(80);
location.setLayoutData(gd);
String locationPath= PreferencesMessages.NativeLibrariesPropertyPage_locationPath_none;
if (fEntry != null) {
String nativeLibrariesPath= getNativeLibrariesPath(fEntry);
if (nativeLibrariesPath != null)
locationPath= nativeLibrariesPath;
}
location.setText(locationPath);
Dialog.applyDialogFont(inner);
}
return inner;
}
IJavaElement elem= getJavaElement();
if (elem == null)
return new Composite(parent, SWT.NONE);
fInitialNativeLibPath= getNativeLibrariesPath(fEntry);
fConfigurationBlock= new NativeLibrariesConfigurationBlock(this, getShell(), fInitialNativeLibPath, fEntry);
Control control= fConfigurationBlock.createContents(parent);
Dialog.applyDialogFont(control);
return control;
}
private static String getNativeLibrariesPath(IClasspathEntry entry) {
IClasspathAttribute[] extraAttributes= entry.getExtraAttributes();
for (int i= 0; i < extraAttributes.length; i++) {
if (extraAttributes[i].getName().equals(JavaRuntime.CLASSPATH_ATTR_LIBRARY_PATH_ENTRY)) {
return extraAttributes[i].getValue();
}
}
return null;
}
/**
* {@inheritDoc}
*/
public void statusChanged(IStatus status) {
setValid(!status.matches(IStatus.ERROR));
StatusUtil.applyToStatusLine(this, status);
}
/*
* @see PreferencePage#performDefaults()
*/
@Override
protected void performDefaults() {
if (fConfigurationBlock != null) {
fConfigurationBlock.performDefaults();
}
super.performDefaults();
}
/**
* @see org.eclipse.jface.preference.IPreferencePage#performOk()
*/
@Override
public boolean performOk() {
if (fConfigurationBlock != null) {
String nativeLibraryPath= fConfigurationBlock.getNativeLibraryPath();
if (nativeLibraryPath == null && fInitialNativeLibPath == null
|| nativeLibraryPath != null && fInitialNativeLibPath != null && nativeLibraryPath.equals(fInitialNativeLibPath)) {
return true; //no change
}
IJavaElement elem= getJavaElement();
try {
IRunnableWithProgress runnable= getRunnable(getShell(), elem, nativeLibraryPath, fEntry, fContainerPath, fEntry.getReferencingEntry() != null);
PlatformUI.getWorkbench().getProgressService().run(true, true, runnable);
} catch (InvocationTargetException e) {
String title= PreferencesMessages.NativeLibrariesPropertyPage_errorAttaching_title;
String message= PreferencesMessages.NativeLibrariesPropertyPage_errorAttaching_message;
ExceptionHandler.handle(e, getShell(), title, message);
return false;
} catch (InterruptedException e) {
// Canceled
return false;
}
}
return true;
}
private static IRunnableWithProgress getRunnable(final Shell shell, final IJavaElement elem, final String nativeLibraryPath, final IClasspathEntry entry, final IPath containerPath, final boolean isReferencedEntry) {
return new IRunnableWithProgress() {
public void run(IProgressMonitor monitor) throws InvocationTargetException {
try {
IJavaProject project= elem.getJavaProject();
if (elem instanceof IPackageFragmentRoot) {
CPListElement cpElem= CPListElement.createFromExisting(entry, project);
cpElem.setAttribute(CPListElement.NATIVE_LIB_PATH, nativeLibraryPath);
IClasspathEntry newEntry= cpElem.getClasspathEntry();
String[] changedAttributes= { CPListElement.NATIVE_LIB_PATH };
BuildPathSupport.modifyClasspathEntry(shell, newEntry, changedAttributes, project, containerPath, isReferencedEntry, monitor);
}
} catch (CoreException e) {
throw new InvocationTargetException(e);
}
}
};
}
private IJavaElement getJavaElement() {
IAdaptable adaptable= getElement();
IJavaElement elem= (IJavaElement) adaptable.getAdapter(IJavaElement.class);
if (elem == null) {
IResource resource= (IResource) adaptable.getAdapter(IResource.class);
//special case when the .jar is a file
try {
if (resource instanceof IFile && ArchiveFileFilter.isArchivePath(resource.getFullPath(), false)) {
IProject proj= resource.getProject();
if (proj.hasNature(JavaCore.NATURE_ID)) {
IJavaProject jproject= JavaCore.create(proj);
elem= jproject.getPackageFragmentRoot(resource); // create a handle
}
}
} catch (CoreException e) {
JavaPlugin.log(e);
}
}
return elem;
}
}