plugins/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/wizards/ConfirmOverwriteWizard.java

   1 package org.argeo.slc.client.ui.wizards;
   2
   3 import javax.jcr.Node;
   4 import javax.jcr.RepositoryException;
   5
   6 import org.argeo.slc.SlcException;
   7 import org.argeo.slc.client.ui.ClientUiPlugin;
   8 import org.eclipse.jface.dialogs.MessageDialog;
   9 import org.eclipse.jface.wizard.Wizard;
  10 import org.eclipse.jface.wizard.WizardPage;
  11 import org.eclipse.swt.SWT;
  12 import org.eclipse.swt.events.ModifyEvent;
  13 import org.eclipse.swt.events.ModifyListener;
  14 import org.eclipse.swt.events.SelectionAdapter;
  15 import org.eclipse.swt.events.SelectionEvent;
  16 import org.eclipse.swt.layout.GridData;
  17 import org.eclipse.swt.layout.GridLayout;
  18 import org.eclipse.swt.widgets.Button;
  19 import org.eclipse.swt.widgets.Composite;
  20 import org.eclipse.swt.widgets.Display;
  21 import org.eclipse.swt.widgets.Label;
  22 import org.eclipse.swt.widgets.Text;
  23 import org.eclipse.ui.ISharedImages;
  24
  25 public class ConfirmOverwriteWizard extends Wizard {
  26
  27         // Define widget here to simplify getters
  28         private Button overwriteBtn, renameBtn;
  29         private Text newNameTxt;
  30         private Label newNameLbl;
  31
  32         // business object
  33         private String sourceNodeName;
  34         private Node targetParentNode;
  35
  36         private String newName;
  37         private boolean overwrite;
  38
  39         public ConfirmOverwriteWizard(String sourceNodeName, Node targetParentNode) {
  40                 setWindowTitle("Confirm overwrite or define a new name");
  41                 this.sourceNodeName = sourceNodeName;
  42                 this.targetParentNode = targetParentNode;
  43         }
  44
  45         @Override
  46         public void addPages() {
  47                 try {
  48                         addPage(new MyPage());
  49                 } catch (Exception e) {
  50                         throw new SlcException("Cannot add page to wizard ", e);
  51                 }
  52                 getShell().setImage(
  53                                 ClientUiPlugin.getDefault().getWorkbench().getSharedImages()
  54                                                 .getImageDescriptor(ISharedImages.IMG_LCL_LINKTO_HELP)
  55                                                 .createImage());
  56         }
  57
  58         // Expose info to the calling view
  59         public boolean overwrite() {
  60                 return overwrite;
  61         }
  62
  63         public String newName() {
  64                 return newName;
  65         }
  66
  67         @Override
  68         public boolean performFinish() {
  69                 boolean doFinish = false;
  70
  71                 if (canFinish()) {
  72                         if (overwriteBtn.getSelection())
  73                                 doFinish = MessageDialog.openConfirm(Display.getDefault()
  74                                                 .getActiveShell(), "CAUTION", "All data contained in ["
  75                                                 + sourceNodeName
  76                                                 + "] are about to be definitively destroyed. \n "
  77                                                 + "Are you sure you want to proceed ?");
  78                         else
  79                                 doFinish = true;
  80                         // cache values
  81                 }
  82                 if (doFinish) {
  83                         overwrite = overwriteBtn.getSelection();
  84                         newName = newNameTxt.getText();
  85                 }
  86                 return doFinish;
  87         }
  88
  89         class MyPage extends WizardPage implements ModifyListener {
  90
  91                 public MyPage() {
  92                         super("");
  93                         setTitle("An object with same name (" + sourceNodeName
  94                                         + ") already exists");
  95                 }
  96
  97                 public void createControl(Composite parent) {
  98                         Composite composite = new Composite(parent, SWT.NONE);
  99                         composite.setLayout(new GridLayout(2, false));
 100
 101                         // choose between overwrite and rename
 102                         overwriteBtn = new Button(composite, SWT.RADIO);
 103                         overwriteBtn.setText("Overwrite");
 104                         GridData gd = new GridData();
 105                         gd.horizontalIndent = 30;
 106                         gd.horizontalSpan = 2;
 107                         overwriteBtn.setLayoutData(gd);
 108                         overwriteBtn.setSelection(true);
 109
 110                         renameBtn = new Button(composite, SWT.RADIO);
 111                         renameBtn.setText("Rename");
 112                         renameBtn.setSelection(false);
 113                         renameBtn.setText("Rename");
 114                         gd = new GridData();
 115                         gd.horizontalIndent = 30;
 116                         gd.horizontalSpan = 2;
 117                         renameBtn.setLayoutData(gd);
 118
 119                         newNameLbl = new Label(composite, SWT.LEAD);
 120                         newNameLbl.setText("New name");
 121                         newNameLbl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false,
 122                                         false));
 123                         newNameLbl.setEnabled(false);
 124
 125                         newNameTxt = new Text(composite, SWT.LEAD | SWT.BORDER);
 126                         newNameTxt.setText(sourceNodeName);
 127                         newNameTxt.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true,
 128                                         false));
 129                         if (newNameTxt != null)
 130                                 newNameTxt.addModifyListener(this);
 131                         newNameTxt.setEnabled(false);
 132
 133                         SelectionAdapter sa = new SelectionAdapter() {
 134                                 public void widgetSelected(SelectionEvent e) {
 135                                         updateSelection(overwriteBtn.getSelection());
 136                                 }
 137                         };
 138                         overwriteBtn.addSelectionListener(sa);
 139                         renameBtn.addSelectionListener(sa);
 140
 141                         // Compulsory
 142                         setControl(composite);
 143                 }
 144
 145                 private void updateSelection(boolean overwrite) {
 146                         newNameLbl.setEnabled(!overwrite);
 147                         newNameTxt.setEnabled(!overwrite);
 148                         if (overwrite)
 149                                 setPageComplete(true);
 150                         else
 151                                 checkComplete();
 152                 }
 153
 154                 protected String getTechName() {
 155                         return newNameTxt.getText();
 156                 }
 157
 158                 public void modifyText(ModifyEvent event) {
 159                         checkComplete();
 160                 }
 161
 162                 private void checkComplete() {
 163                         try {
 164
 165                                 String newName = newNameTxt.getText();
 166                                 if (newName == null || "".equals(newName.trim())) {
 167                                         setMessage("Name cannot be blank or empty",
 168                                                         WizardPage.ERROR);
 169                                         setPageComplete(false);
 170                                 } else if (targetParentNode.hasNode(newName)) {
 171                                         setMessage("An object with the same name already exists.",
 172                                                         WizardPage.ERROR);
 173                                         setPageComplete(false);
 174                                 } else {
 175                                         setMessage("Complete", WizardPage.INFORMATION);
 176                                         setPageComplete(true);
 177                                 }
 178                         } catch (RepositoryException e) {
 179                                 throw new SlcException("Unexpected error while checking "
 180                                                 + "children node with same name", e);
 181                         }
 182                 }
 183         }
 184 }