org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/project/dialogs/NewExperimentDialog.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Francois Chouinard - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.ui.views.project.dialogs;
  14
  15 import java.lang.reflect.InvocationTargetException;
  16 import java.net.URI;
  17
  18 import org.eclipse.core.resources.IContainer;
  19 import org.eclipse.core.resources.IFolder;
  20 import org.eclipse.core.resources.IResource;
  21 import org.eclipse.core.resources.IWorkspace;
  22 import org.eclipse.core.resources.IWorkspaceRoot;
  23 import org.eclipse.core.runtime.CoreException;
  24 import org.eclipse.core.runtime.IPath;
  25 import org.eclipse.core.runtime.IProgressMonitor;
  26 import org.eclipse.core.runtime.IStatus;
  27 import org.eclipse.core.runtime.OperationCanceledException;
  28 import org.eclipse.core.runtime.Path;
  29 import org.eclipse.core.runtime.Status;
  30 import org.eclipse.jface.dialogs.ErrorDialog;
  31 import org.eclipse.jface.dialogs.IDialogConstants;
  32 import org.eclipse.jface.dialogs.MessageDialog;
  33 import org.eclipse.linuxtools.tmf.ui.views.project.model.TmfExperimentFolderNode;
  34 import org.eclipse.osgi.util.NLS;
  35 import org.eclipse.swt.SWT;
  36 import org.eclipse.swt.graphics.Font;
  37 import org.eclipse.swt.layout.GridData;
  38 import org.eclipse.swt.layout.GridLayout;
  39 import org.eclipse.swt.widgets.Composite;
  40 import org.eclipse.swt.widgets.Control;
  41 import org.eclipse.swt.widgets.Event;
  42 import org.eclipse.swt.widgets.Label;
  43 import org.eclipse.swt.widgets.Listener;
  44 import org.eclipse.swt.widgets.Shell;
  45 import org.eclipse.swt.widgets.Text;
  46 import org.eclipse.ui.PlatformUI;
  47 import org.eclipse.ui.actions.WorkspaceModifyOperation;
  48 import org.eclipse.ui.dialogs.SelectionStatusDialog;
  49 import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
  50 import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;
  51 import org.eclipse.ui.internal.ide.dialogs.CreateLinkedResourceGroup;
  52
  53 /**
  54  * NewExperimentDialog
  55  *
  56  * This is stripped down version of NewFolderDialog.
  57  */
  58 @SuppressWarnings("restriction")
  59 public class NewExperimentDialog extends SelectionStatusDialog {
  60
  61         private Text folderNameField;
  62         private IContainer container;
  63         private boolean firstLinkCheck = true;
  64         private CreateLinkedResourceGroup linkedResourceGroup;
  65
  66         /**
  67          * Creates a NewFolderDialog
  68          *
  69          * @param parentShell parent of the new dialog
  70          * @param container parent of the new folder
  71          */
  72         public NewExperimentDialog(Shell parentShell, TmfExperimentFolderNode experimentFolder) {
  73                 super(parentShell);
  74                 this.container = experimentFolder.getFolder();
  75                 setTitle("Tmf Experiment");
  76                 setStatusLineAboveButtons(true);
  77         }
  78
  79         /**
  80          * Creates the folder using the name and link target entered by the user.
  81          * Sets the dialog result to the created folder.
  82          */
  83         @Override
  84         protected void computeResult() {
  85         }
  86
  87         /**
  88          * @see org.eclipse.jface.window.Window#create()
  89          */
  90         @Override
  91         public void create() {
  92                 super.create();
  93                 getButton(IDialogConstants.OK_ID).setEnabled(false);
  94         }
  95
  96         /**
  97          * Creates the widget for advanced options.
  98          *
  99          * @param parent the parent composite
 100          */
 101         protected void createLinkResourceGroup(Composite parent) {
 102                 linkedResourceGroup = new CreateLinkedResourceGroup(IResource.FOLDER,
 103                                 new Listener() {
 104                                         @Override
 105                                         public void handleEvent(Event e) {
 106                                                 validateLinkedResource();
 107                                                 firstLinkCheck = false;
 108                                         }
 109                                 }, new CreateLinkedResourceGroup.IStringValue() {
 110                                         @Override
 111                                         public void setValue(String string) {
 112                                                 folderNameField.setText(string);
 113                                         }
 114
 115                                         @Override
 116                                         public String getValue() {
 117                                                 return folderNameField.getText();
 118                                         }
 119
 120                                         @Override
 121                                         public IResource getResource() {
 122                                                 // TODO Auto-generated method stub
 123                                                 return null;
 124                                         }
 125                                 });
 126         }
 127
 128         /* (non-Javadoc)
 129          * Method declared on Dialog.
 130          */
 131         @Override
 132         protected Control createDialogArea(Composite parent) {
 133                 Composite composite = (Composite) super.createDialogArea(parent);
 134                 composite.setLayout(new GridLayout());
 135                 composite.setLayoutData(new GridData(GridData.FILL_BOTH));
 136
 137                 createFolderNameGroup(composite);
 138                 createLinkResourceGroup(composite);
 139                 return composite;
 140         }
 141
 142         /**
 143          * Creates the folder name specification controls.
 144          *
 145          * @param parent the parent composite
 146          */
 147         private void createFolderNameGroup(Composite parent) {
 148                 Font font = parent.getFont();
 149                 Composite folderGroup = new Composite(parent, SWT.NONE);
 150                 GridLayout layout = new GridLayout();
 151                 layout.numColumns = 2;
 152                 folderGroup.setLayout(layout);
 153                 folderGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 154
 155                 // new folder label
 156                 Label folderLabel = new Label(folderGroup, SWT.NONE);
 157                 folderLabel.setFont(font);
 158                 folderLabel.setText("Experiment name: ");
 159
 160                 // new folder name entry field
 161                 folderNameField = new Text(folderGroup, SWT.BORDER);
 162                 GridData data = new GridData(GridData.FILL_HORIZONTAL);
 163                 data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
 164                 folderNameField.setLayoutData(data);
 165                 folderNameField.setFont(font);
 166                 folderNameField.addListener(SWT.Modify, new Listener() {
 167                         @Override
 168                         public void handleEvent(Event event) {
 169                                 validateLinkedResource();
 170                         }
 171                 });
 172         }
 173
 174         /**
 175          * Creates a folder resource handle for the folder with the given name.
 176          * The folder handle is created relative to the container specified during
 177          * object creation.
 178          *
 179          * @param folderName the name of the folder resource to create a handle for
 180          * @return the new folder resource handle
 181          */
 182         private IFolder createFolderHandle(String folderName) {
 183                 IWorkspaceRoot workspaceRoot = container.getWorkspace().getRoot();
 184                 IPath folderPath = container.getFullPath().append(folderName);
 185                 IFolder folderHandle = workspaceRoot.getFolder(folderPath);
 186
 187                 return folderHandle;
 188         }
 189
 190         /**
 191          * Creates a new folder with the given name and optionally linking to
 192          * the specified link target.
 193          *
 194          * @param folderName name of the new folder
 195          * @param linkTarget name of the link target folder. may be null.
 196          * @return IFolder the new folder
 197          */
 198         private IFolder createNewFolder(String folderName, final URI linkTarget) {
 199                 final IFolder folderHandle = createFolderHandle(folderName);
 200
 201                 WorkspaceModifyOperation operation = new WorkspaceModifyOperation() {
 202                         @Override
 203                         public void execute(IProgressMonitor monitor) throws CoreException {
 204                                 try {
 205                                         monitor.beginTask(IDEWorkbenchMessages.NewFolderDialog_progress, 2000);
 206                                         if (monitor.isCanceled()) {
 207                                                 throw new OperationCanceledException();
 208                                         }
 209                                         if (linkTarget == null) {
 210                                                 folderHandle.create(false, true, monitor);
 211                                         } else {
 212                                                 folderHandle.createLink(linkTarget, IResource.ALLOW_MISSING_LOCAL, monitor);
 213                                         }
 214                                         if (monitor.isCanceled()) {
 215                                                 throw new OperationCanceledException();
 216                                         }
 217                                 } finally {
 218                                         monitor.done();
 219                                 }
 220                         }
 221                 };
 222                 try {
 223                         PlatformUI.getWorkbench().getProgressService().busyCursorWhile(operation);
 224                 } catch (InterruptedException exception) {
 225                         return null;
 226                 } catch (InvocationTargetException exception) {
 227                         if (exception.getTargetException() instanceof CoreException) {
 228                                 ErrorDialog.openError(getShell(),
 229                                                 IDEWorkbenchMessages.NewFolderDialog_errorTitle, null, // no special message
 230                                                 ((CoreException) exception.getTargetException()).getStatus());
 231                         } else {
 232                                 // CoreExceptions are handled above, but unexpected runtime exceptions and errors may still occur.
 233                                 IDEWorkbenchPlugin.log(getClass(),
 234                                                 "createNewExperiment", exception.getTargetException());
 235                                 MessageDialog.openError(getShell(),
 236                                                 IDEWorkbenchMessages.NewFolderDialog_errorTitle,
 237                                                 NLS.bind(IDEWorkbenchMessages.NewFolderDialog_internalError,
 238                                                         exception.getTargetException().getMessage()));
 239                         }
 240                         return null;
 241                 }
 242                 return folderHandle;
 243         }
 244
 245         /**
 246          * Update the dialog's status line to reflect the given status. It is safe to call
 247          * this method before the dialog has been opened.
 248          */
 249         @Override
 250         protected void updateStatus(IStatus status) {
 251                 if (firstLinkCheck && status != null) {
 252                         Status newStatus = new Status(IStatus.OK, status.getPlugin(),
 253                                         status.getCode(), status.getMessage(), status.getException());
 254                         super.updateStatus(newStatus);
 255                 } else {
 256                         super.updateStatus(status);
 257                 }
 258         }
 259
 260         /**
 261          * Update the dialog's status line to reflect the given status. It is safe to call
 262          * this method before the dialog has been opened.
 263          * @param severity
 264          * @param message
 265          */
 266         private void updateStatus(int severity, String message) {
 267                 updateStatus(new Status(severity, IDEWorkbenchPlugin.IDE_WORKBENCH, severity, message, null));
 268         }
 269
 270         /**
 271          * Checks whether the folder name and link location are valid.
 272          * Disable the OK button if the folder name and link location are valid.
 273          * a message that indicates the problem otherwise.
 274          */
 275         private void validateLinkedResource() {
 276                 boolean valid = validateFolderName();
 277
 278                 if (valid) {
 279                         IFolder linkHandle = createFolderHandle(folderNameField.getText());
 280                         IStatus status = linkedResourceGroup.validateLinkLocation(linkHandle);
 281
 282                         if (status.getSeverity() != IStatus.ERROR) {
 283                                 getOkButton().setEnabled(true);
 284                         } else {
 285                                 getOkButton().setEnabled(false);
 286                         }
 287
 288                         if (status.isOK() == false) {
 289                                 updateStatus(status);
 290                         }
 291                 } else {
 292                         getOkButton().setEnabled(false);
 293                 }
 294         }
 295
 296         /**
 297          * Checks if the folder name is valid.
 298          *
 299          * @return null if the new folder name is valid.
 300          *      a message that indicates the problem otherwise.
 301          */
 302         private boolean validateFolderName() {
 303                 String name = folderNameField.getText();
 304                 IWorkspace workspace = container.getWorkspace();
 305                 IStatus nameStatus = workspace.validateName(name, IResource.FOLDER);
 306
 307                 if ("".equals(name)) { //$NON-NLS-1$
 308                         updateStatus(IStatus.ERROR, "Experiment name is empty"); //$NON-NLS-1$
 309                         return false;
 310                 }
 311                 if (nameStatus.isOK() == false) {
 312                         updateStatus(nameStatus);
 313                         return false;
 314                 }
 315                 IPath path = new Path(name);
 316                 if (container.getFolder(path).exists()
 317                                 || container.getFile(path).exists()) {
 318                         updateStatus(IStatus.ERROR, NLS.bind("Experiment already exists", name)); //$NON-NLS-1$
 319                         return false;
 320                 }
 321                 updateStatus(IStatus.OK, ""); //$NON-NLS-1$
 322                 return true;
 323         }
 324
 325         /* (non-Javadoc)
 326          * @see org.eclipse.ui.dialogs.SelectionStatusDialog#okPressed()
 327          */
 328         @Override
 329         protected void okPressed() {
 330                 URI linkTarget = linkedResourceGroup.getLinkTargetURI();
 331                 IFolder folder = createNewFolder(folderNameField.getText(), linkTarget);
 332                 if (folder == null) {
 333                         return;
 334                 }
 335
 336                 setSelectionResult(new IFolder[] { folder });
 337
 338                 super.okPressed();
 339         }
 340 }