eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/selection/EntitySelectionElement.java

   1 /**
   2  *
   3  */
   4 package eu.etaxonomy.taxeditor.ui.selection;
   5
   6 import java.util.EnumSet;
   7 import java.util.Observable;
   8 import java.util.Observer;
   9
  10 import org.eclipse.core.runtime.IStatus;
  11 import org.eclipse.jface.wizard.WizardDialog;
  12 import org.eclipse.swt.SWT;
  13 import org.eclipse.swt.events.SelectionAdapter;
  14 import org.eclipse.swt.events.SelectionEvent;
  15 import org.eclipse.swt.events.SelectionListener;
  16 import org.eclipse.swt.graphics.Color;
  17 import org.eclipse.swt.widgets.Button;
  18 import org.eclipse.swt.widgets.Composite;
  19 import org.eclipse.swt.widgets.Label;
  20 import org.eclipse.swt.widgets.Shell;
  21 import org.eclipse.swt.widgets.Text;
  22 import org.springframework.security.core.GrantedAuthority;
  23
  24 import eu.etaxonomy.cdm.api.conversation.ConversationHolder;
  25 import eu.etaxonomy.cdm.api.conversation.IConversationEnabled;
  26 import eu.etaxonomy.cdm.common.CdmUtils;
  27 import eu.etaxonomy.cdm.model.common.CdmBase;
  28 import eu.etaxonomy.cdm.model.common.Group;
  29 import eu.etaxonomy.cdm.model.common.ICdmBase;
  30 import eu.etaxonomy.cdm.model.common.IIdentifiableEntity;
  31 import eu.etaxonomy.cdm.model.common.User;
  32 import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;
  33 import eu.etaxonomy.cdm.persistence.hibernate.permission.CRUD;
  34 import eu.etaxonomy.taxeditor.model.ImageResources;
  35 import eu.etaxonomy.taxeditor.preference.Resources;
  36 import eu.etaxonomy.taxeditor.store.CdmStore;
  37 import eu.etaxonomy.taxeditor.store.LoginManager;
  38 import eu.etaxonomy.taxeditor.store.StoreUtil;
  39 import eu.etaxonomy.taxeditor.ui.dialog.selection.SelectionDialogFactory;
  40 import eu.etaxonomy.taxeditor.ui.element.AbstractCdmFormElement;
  41 import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;
  42 import eu.etaxonomy.taxeditor.ui.element.CdmPropertyChangeEvent;
  43 import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;
  44 import eu.etaxonomy.taxeditor.ui.element.IEnableableFormElement;
  45 import eu.etaxonomy.taxeditor.ui.element.IEntityElement;
  46 import eu.etaxonomy.taxeditor.ui.element.ILabeledElement;
  47 import eu.etaxonomy.taxeditor.ui.element.ISelectableElement;
  48 import eu.etaxonomy.taxeditor.ui.element.LayoutConstants;
  49 import eu.etaxonomy.taxeditor.ui.element.SelectionArbitrator;
  50 import eu.etaxonomy.taxeditor.ui.section.grantedAuthority.GrantedAuthorityLabelTextProvider;
  51
  52 /**
  53  * <p>
  54  * Abstract AbstractSelectionElement class.
  55  * </p>
  56  *
  57  * @author n.hoffmann
  58  * @created Nov 17, 2009
  59  * @version 1.0
  60  * @param <T>
  61  */
  62 public class EntitySelectionElement<T extends ICdmBase> extends
  63                 AbstractCdmFormElement implements  SelectionListener, IEnableableFormElement, ISelectableElement, IEntityElement<T>, ILabeledElement, IConversationEnabled, Observer {
  64
  65         private static final EnumSet<CRUD> UPDATE = EnumSet.of(CRUD.UPDATE);
  66         private static final EnumSet<CRUD> DELETE = EnumSet.of(CRUD.DELETE);
  67         private static final EnumSet<CRUD> CREATE = EnumSet.of(CRUD.CREATE);
  68
  69         /**
  70          * Bitmask for configuring functionality of selection element
  71          */
  72         public static final int NOTHING = 0; // 000
  73         public static final int EDITABLE = 1 << 0; // 001
  74         public static final int DELETABLE = 1 << 1; // 010
  75         public static final int SELECTABLE = 1 << 2; // 100
  76         public static final int ALL = EDITABLE | DELETABLE | SELECTABLE; // 111
  77
  78         protected T entity;
  79
  80         protected Label label;
  81         protected Text text;
  82         protected Button button_selection;
  83
  84         private SelectionArbitrator selectionArbitrator;
  85
  86         protected Button button_edit;
  87
  88         private final String labelString;
  89
  90         private Composite selectableComposite;
  91
  92         private Button button_remove;
  93
  94         private final boolean isEditable;
  95
  96         private final boolean isDeletable;
  97
  98         private final ConversationHolder conversation;
  99         private Class<T> clazz;
 100
 101         /**
 102          * <p>
 103          * Constructor for AbstractSelectionElement.
 104          * </p>
 105          *
 106          * @param formFactory
 107          *            a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory}
 108          *            object.
 109          * @param conversation
 110          *            TODO
 111          * @param parentElement
 112          *            a {@link eu.etaxonomy.taxeditor.ui.element.ICdmFormElement}
 113          *            object.
 114          * @param labelString
 115          *            a {@link java.lang.String} object.
 116          * @param entity
 117          *            a T object.
 118          * @param isEditable
 119          *            a boolean.
 120          * @param isSelectable
 121          *            a boolean.
 122          * @param isDeletable
 123          *            a boolean.
 124          * @param style
 125          *            a int.
 126          * @param <T>
 127          *            a T object.
 128          */
 129         public EntitySelectionElement(CdmFormFactory formFactory,
 130                         ConversationHolder conversation, ICdmFormElement parentElement,
 131                         String labelString, T entity, int mode, int style) {
 132                 super(formFactory, parentElement);
 133
 134                 this.isEditable = (mode & EDITABLE) == EDITABLE;
 135                 this.isDeletable = (mode & DELETABLE) == DELETABLE;
 136                 boolean isSelectable = (mode & SELECTABLE) == SELECTABLE;
 137
 138                 this.labelString = labelString;
 139
 140                 this.conversation = conversation;
 141
 142                 if (isSelectable && formFactory.getSelectionProvider() != null) {
 143                         selectionArbitrator = formFactory.createSelectionArbitrator(this);
 144                 }
 145
 146                 createControls(getLayoutComposite(), SWT.NULL);
 147
 148                 setEntity(entity);
 149         }
 150
 151         public EntitySelectionElement(CdmFormFactory formFactory,
 152                         ConversationHolder conversation, ICdmFormElement parentElement, Class<T> clazz,
 153                         String labelString, T entity, int mode, int style) {
 154                 this(formFactory, conversation, parentElement, labelString, entity, mode, style);
 155                 this.clazz = clazz;
 156         }
 157
 158         private void createControls(Composite parent, int style) {
 159
 160                 label = formFactory.createLabel(getLayoutComposite(), labelString + " : ",
 161                                 SWT.NULL);
 162
 163                 addControl(label);
 164
 165                 selectableComposite = formFactory.createComposite(getLayoutComposite());
 166
 167                 int columns = 2;
 168                 if (isEditable) {
 169                         columns += 1;
 170                 }
 171                 if (isDeletable) {
 172                         columns += 1;
 173                 }
 174
 175                 selectableComposite.setLayout(LayoutConstants.LAYOUT(columns, false));
 176                 selectableComposite.setLayoutData(LayoutConstants.FILL_HORIZONTALLY());
 177
 178                 addControl(selectableComposite);
 179
 180                 text = formFactory.createText(selectableComposite, null, SWT.WRAP);
 181                 text.setEditable(false);
 182                 addControl(text);
 183
 184                 text.setLayoutData(LayoutConstants.FILL_HORIZONTALLY());
 185                 text.setBackground(StoreUtil
 186                                 .getColor(Resources.COLOR_TEXT_DISABLED_BACKGROUND));
 187
 188                 button_selection = formFactory.createButton(selectableComposite, null,
 189                                 SWT.PUSH);
 190                 button_selection.setImage(ImageResources
 191                                 .getImage(ImageResources.BROWSE_ICON));
 192                 button_selection.setToolTipText("Browse existing");
 193
 194                 addControl(button_selection);
 195                 button_selection.addSelectionListener(this);
 196
 197                 if (isEditable) {
 198                         button_edit = formFactory.createButton(selectableComposite, null,
 199                                         SWT.PUSH);
 200                         button_edit.setImage(ImageResources
 201                                         .getImage(ImageResources.EDIT_ICON));
 202                         button_edit.setToolTipText("Edit");
 203                         addControl(button_edit);
 204                         button_edit.addSelectionListener(new EditListener(this));
 205                 }
 206
 207                 if (isDeletable) {
 208                         button_remove = formFactory.createButton(selectableComposite, null,
 209                                         SWT.PUSH);
 210                         button_remove.setImage(ImageResources
 211                                         .getImage(ImageResources.TRASH_ICON));
 212                         button_remove.setToolTipText("Remove");
 213                         addControl(button_remove);
 214                         button_remove.addSelectionListener(new DeleteListener(this));
 215                 }
 216         }
 217
 218         @Override
 219     public void widgetSelected(SelectionEvent e) {
 220                 T selection = SelectionDialogFactory.getSelectionFromDialog(clazz, getShell(), getConversationHolder(), getEntity());
 221                 setSelectionInternal(selection);
 222         }
 223
 224         /**
 225          * Return the selected object
 226          *
 227          * @return a T object.
 228          */
 229         public T getSelection() {
 230                 return entity;
 231         }
 232
 233         /*
 234          * (non-Javadoc)
 235          *
 236          * @see
 237          * eu.etaxonomy.taxeditor.forms.IEnableableFormElement#setEnabled(boolean)
 238          */
 239         /** {@inheritDoc} */
 240         @Override
 241         public void setEnabled(boolean enabled) {
 242                 button_selection.setEnabled(enabled);
 243                 if (isEditable) {
 244                         updateButtonStates();
 245                 }
 246         }
 247
 248         /**
 249          * <p>
 250          * setSelectionInternal
 251          * </p>
 252          *
 253          * @param selection
 254          *            a T object.
 255          */
 256         protected void setSelectionInternal(T selection) {
 257                 if (selection != null && !selection.equals(this.entity)) {
 258                         setEntity(selection);
 259                         firePropertyChangeEvent(new CdmPropertyChangeEvent(this, null));
 260                 }
 261         }
 262
 263         /**
 264          * <p>
 265          * Setter for the field <code>entity</code>.
 266          * </p>
 267          *
 268          * @param selection
 269          *            a T object.
 270          */
 271         public void setEntity(T selection) {
 272                 this.entity = selection;
 273                 updateElement();
 274         }
 275
 276         /**
 277          * Updates this elements view
 278          */
 279         protected void updateElement() {
 280                 String title = CdmUtils.Nz(getTitle());
 281                 // we have to duplicate ampersands otherwise they are treated as
 282                 // mnenomic (see Label.setText() documentation)
 283                 title = title.replace("&", "&&");
 284                 text.setText(title); // title can be null
 285                 if (isEditable) {
 286                         updateButtonStates();
 287                 }
 288         }
 289
 290     public void updateFromWizard() {
 291                 updateElement();
 292                 firePropertyChangeEvent(new CdmPropertyChangeEvent(this, null));
 293         }
 294
 295         /**
 296          * <p>
 297          * getTitle
 298          * </p>
 299          *
 300          * @return a {@link java.lang.String} object.
 301          */
 302         protected String getTitle() {
 303                 if (entity != null){
 304                         if(entity instanceof IIdentifiableEntity) {
 305                                 return ((IIdentifiableEntity) entity).getTitleCache();
 306                         } else if(entity instanceof Group){
 307                                 return ((Group) entity).getName();
 308                         } else if(entity instanceof GrantedAuthority){
 309                                 return GrantedAuthorityLabelTextProvider.getText(((GrantedAuthority) entity));
 310                         } else if(entity instanceof User){
 311                 return ((User) entity).getUsername();
 312             }
 313
 314                 }
 315                 return "";
 316         }
 317
 318         /** {@inheritDoc} */
 319         @Override
 320         public void setSelected(boolean selected) {
 321                 setBackground(selected ? SELECTED : getPersistentBackground());
 322         }
 323
 324         /*
 325          * (non-Javadoc)
 326          *
 327          * @see eu.etaxonomy.taxeditor.forms.IEntityElement#getEntity()
 328          */
 329         /**
 330          * <p>
 331          * Getter for the field <code>entity</code>.
 332          * </p>
 333          *
 334          * @return a T object.
 335          */
 336         @Override
 337         public T getEntity() {
 338                 return entity;
 339         }
 340
 341         /*
 342          * (non-Javadoc)
 343          *
 344          * @see eu.etaxonomy.taxeditor.forms.section.cdmdetail.ISelectableElement#
 345          * getSelectionArbitrator()
 346          */
 347         /**
 348          * <p>
 349          * Getter for the field <code>selectionArbitrator</code>.
 350          * </p>
 351          *
 352          * @return a {@link eu.etaxonomy.taxeditor.ui.element.SelectionArbitrator}
 353          *         object.
 354          */
 355         @Override
 356         public SelectionArbitrator getSelectionArbitrator() {
 357                 return selectionArbitrator;
 358         }
 359
 360         /**
 361          * Convenient access to current shell
 362          *
 363          * @return a {@link org.eclipse.swt.widgets.Shell} object.
 364          */
 365     public Shell getShell() {
 366                 return getLayoutComposite().getShell();
 367         }
 368
 369         /** {@inheritDoc} */
 370         @Override
 371         public void setIrrelevant(boolean irrelevant) {
 372                 String colorId = irrelevant ? Resources.COLOR_COMPOSITE_IRRELEVANT
 373                                 : Resources.COLOR_TEXT_DISABLED_BACKGROUND;
 374
 375                 Color color = StoreUtil.getColor(colorId);
 376                 text.setBackground(color);
 377         }
 378
 379         private class DeleteListener extends SelectionAdapter {
 380
 381                 private final EntitySelectionElement<T> selectionElement;
 382
 383                 public DeleteListener(EntitySelectionElement<T> selectionElement) {
 384                         this.selectionElement = selectionElement;
 385                 }
 386
 387                 @Override
 388                 public void widgetSelected(SelectionEvent e) {
 389                         setEntity(null);
 390                         firePropertyChangeEvent(new CdmPropertyChangeEvent(
 391                                         selectionElement, null));
 392                 }
 393         }
 394
 395         private class EditListener extends SelectionAdapter {
 396
 397                 private final EntitySelectionElement<T> selectionElement;
 398
 399                 public EditListener(EntitySelectionElement<T> selectionElement) {
 400                         this.selectionElement = selectionElement;
 401                 }
 402
 403                 /** {@inheritDoc} */
 404                 @Override
 405                 public void widgetSelected(SelectionEvent e) {
 406                         WizardDialog dialog = new WizardDialog(selectionElement.getShell(),
 407                                         new EditFromSelectionWizard(selectionElement));
 408                         if (dialog.open() == IStatus.OK) {
 409                                 selectionElement.updateFromWizard();
 410                         }
 411                 }
 412         }
 413
 414         // not used
 415         /** {@inheritDoc} */
 416         @Override
 417         public void widgetDefaultSelected(SelectionEvent e) {
 418         }
 419
 420         /**
 421          * <p>
 422          * getConversationHolder
 423          * </p>
 424          *
 425          * @return a {@link eu.etaxonomy.cdm.api.conversation.ConversationHolder}
 426          *         object.
 427          */
 428         @Override
 429         public ConversationHolder getConversationHolder() {
 430                 return conversation;
 431         }
 432
 433         /** {@inheritDoc} */
 434         @Override
 435         public void setBackground(Color color) {
 436                 label.setBackground(color);
 437         }
 438
 439         /** {@inheritDoc} */
 440         @Override
 441         public void setLabel(String labelString) {
 442                 if (label != null) {
 443                         label.setText(labelString);
 444                 }
 445         }
 446
 447         /**
 448          * <p>
 449          * Getter for the field <code>label</code>.
 450          * </p>
 451          *
 452          * @return a {@link java.lang.String} object.
 453          */
 454         @Override
 455         public String getLabel() {
 456                 if (label != null) {
 457                         return label.getText() + " : ";
 458                 }
 459                 return null;
 460         }
 461
 462         /** {@inheritDoc} */
 463         @Override
 464         public void update(CdmDataChangeMap changeEvents) {
 465         }
 466
 467         /* (non-Javadoc)
 468          * @see eu.etaxonomy.taxeditor.ui.element.AbstractCdmFormElement#removeElements()
 469          */
 470         @Override
 471     public void removeElements(){
 472                 super.removeElements();
 473                 LoginManager loginManager = CdmStore.getLoginManager();
 474                 loginManager.addObserver(this);
 475         }
 476
 477         @Override
 478         public void update(Observable o, Object arg) {
 479                 if(o instanceof LoginManager){
 480                         updateButtonStates();
 481                 }
 482         }
 483
 484         private void updateButtonStates() {
 485                 button_edit.setEnabled(isEditable && button_selection.isEnabled() && getEntity() != null && CdmStore.currentAuthentiationHasPermission((CdmBase) getEntity(), UPDATE));
 486         }
 487 }