| 1 | package de.uka.ipd.sdq.pcmbench.tabs.generic; |
| 2 | |
| 3 | import java.util.Observable; |
| 4 | import java.util.Observer; |
| 5 | |
| 6 | import org.eclipse.core.runtime.Assert; |
| 7 | import org.eclipse.emf.ecore.EObject; |
| 8 | import org.eclipse.jface.viewers.CellEditor; |
| 9 | import org.eclipse.jface.viewers.IBaseLabelProvider; |
| 10 | import org.eclipse.jface.viewers.ICellModifier; |
| 11 | import org.eclipse.jface.viewers.IContentProvider; |
| 12 | import org.eclipse.jface.viewers.ISelectionChangedListener; |
| 13 | import org.eclipse.jface.viewers.IStructuredSelection; |
| 14 | import org.eclipse.jface.viewers.SelectionChangedEvent; |
| 15 | import org.eclipse.jface.viewers.TableViewer; |
| 16 | import org.eclipse.swt.SWT; |
| 17 | import org.eclipse.swt.events.SelectionListener; |
| 18 | import org.eclipse.swt.layout.FormAttachment; |
| 19 | import org.eclipse.swt.layout.FormData; |
| 20 | import org.eclipse.swt.layout.GridData; |
| 21 | import org.eclipse.swt.widgets.Composite; |
| 22 | import org.eclipse.swt.widgets.Table; |
| 23 | import org.eclipse.swt.widgets.ToolBar; |
| 24 | import org.eclipse.swt.widgets.ToolItem; |
| 25 | |
| 26 | import de.uka.ipd.sdq.pcmbench.tabs.PCMBenchTabsImages; |
| 27 | |
| 28 | /** |
| 29 | * @author Roman Andrej |
| 30 | */ |
| 31 | public abstract class EditorSection implements Observer { |
| 32 | |
| 33 | /** Define the value for TableSection. */ |
| 34 | private Composite composite; |
| 35 | private ToolItem addButton, deleteButton; |
| 36 | /** TableViewer */ |
| 37 | protected TableViewer viewer; |
| 38 | /** Define selected element in the section. */ |
| 39 | private EObject selectedObject = null; |
| 40 | |
| 41 | public EditorSection(Composite composite) { |
| 42 | composite.getParent().setLayoutData( |
| 43 | new GridData(SWT.FILL, SWT.FILL, true, true)); |
| 44 | this.composite = composite; |
| 45 | |
| 46 | createEditorSection(); |
| 47 | } |
| 48 | |
| 49 | private void createEditorSection() { |
| 50 | createTableSection(createToolBar()); |
| 51 | } |
| 52 | |
| 53 | |
| 54 | protected ToolBar createToolBar() { |
| 55 | |
| 56 | ToolBar toolBar = new ToolBar(composite, SWT.VERTICAL | SWT.FLAT |
| 57 | | SWT.RIGHT); |
| 58 | FormData formData = new FormData(); |
| 59 | formData.left = new FormAttachment(96, 0); |
| 60 | formData.top = new FormAttachment(0, 0); |
| 61 | formData.right = new FormAttachment(100, 0); |
| 62 | formData.bottom = new FormAttachment(100, 0); |
| 63 | toolBar.setLayoutData(formData); |
| 64 | |
| 65 | /** Create Add-Button by ToolBar */ |
| 66 | if (canAddButonCreated()) { |
| 67 | addButton = new ToolItem(toolBar, SWT.PUSH); |
| 68 | addButton.setImage(PCMBenchTabsImages.imageRegistry |
| 69 | .get(PCMBenchTabsImages.ADD_SIGN)); |
| 70 | addButton.addSelectionListener(createAddButtonActionListener()); |
| 71 | } |
| 72 | |
| 73 | |
| 74 | /** Create Delete-Button by ToolBar */ |
| 75 | if (canDeleteButonCreated()) { |
| 76 | deleteButton = new ToolItem(toolBar, SWT.PUSH); |
| 77 | deleteButton.setImage(PCMBenchTabsImages.imageRegistry |
| 78 | .get(PCMBenchTabsImages.DELETE_SIGN)); |
| 79 | deleteButton.setEnabled(false); |
| 80 | } |
| 81 | |
| 82 | return toolBar; |
| 83 | } |
| 84 | |
| 85 | /** Create the section with Table and TableViewer. */ |
| 86 | protected void createTableSection(ToolBar toolBar){ |
| 87 | |
| 88 | // style the style of table to construct |
| 89 | int style = SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL |
| 90 | | SWT.FULL_SELECTION | SWT.HIDE_SELECTION; |
| 91 | // Width board inside table and toolbar |
| 92 | int widthBoard = 6; |
| 93 | |
| 94 | Table table = new Table(composite, style); |
| 95 | |
| 96 | // create table layout |
| 97 | FormData data = new FormData(); |
| 98 | data.left = new FormAttachment(0, 0); |
| 99 | data.right = new FormAttachment(toolBar, widthBoard); |
| 100 | data.top = new FormAttachment(0, 0); |
| 101 | data.bottom = new FormAttachment(100, 0); |
| 102 | |
| 103 | table.setLayoutData(data); |
| 104 | table.setHeaderVisible(true); |
| 105 | table.setLinesVisible(true); |
| 106 | |
| 107 | |
| 108 | viewer = new TableViewer(table); |
| 109 | viewer.setUseHashlookup(true); |
| 110 | viewer.setColumnProperties(getTableColumnNames()); |
| 111 | viewer.setCellEditors(createViewerCellEditors(table)); |
| 112 | viewer.addSelectionChangedListener(new ISelectionChangedListener() { |
| 113 | |
| 114 | /* (non-Javadoc) |
| 115 | * @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent) |
| 116 | */ |
| 117 | public void selectionChanged(SelectionChangedEvent event) { |
| 118 | Object input = ((IStructuredSelection) event.getSelection()) |
| 119 | .getFirstElement(); |
| 120 | |
| 121 | if (input instanceof EObject) { |
| 122 | selectedObject = (EObject) input; |
| 123 | setDeleteButtonEnabled(inputValidation(selectedObject)); |
| 124 | } else { |
| 125 | setDeleteButtonEnabled(false); |
| 126 | } |
| 127 | } |
| 128 | }); |
| 129 | |
| 130 | // define the listener for Delete-Button |
| 131 | setDeleteButtonListener(viewer); |
| 132 | // set CellModifier for Viewer |
| 133 | setViewerCellModifier(viewer); |
| 134 | // create column |
| 135 | createTableColumns(table); |
| 136 | |
| 137 | |
| 138 | } |
| 139 | |
| 140 | /** Create the table columns. */ |
| 141 | protected abstract void createTableColumns(Table table); |
| 142 | |
| 143 | protected abstract boolean inputValidation(EObject eObject); |
| 144 | |
| 145 | /** |
| 146 | * Create a SelectionListener for the Add-Button and set him to TableViewer |
| 147 | * as 'SelectionChangedListener'. Thus those becomes available element, |
| 148 | * which was selected in the TableViewer, for the DeleteAction |
| 149 | * |
| 150 | * @param viewer |
| 151 | * instance of TableViewer |
| 152 | */ |
| 153 | protected void setDeleteButtonListener(TableViewer viewer) { |
| 154 | SelectionListener listener = createDeleteButtonListener(); |
| 155 | viewer |
| 156 | .addSelectionChangedListener((ISelectionChangedListener) listener); |
| 157 | if (canDeleteButonCreated()) { |
| 158 | deleteButton.addSelectionListener(listener); |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * Create a ICellModifier for TableViewer with 'EditorSection' as Observer for him. |
| 164 | * |
| 165 | * @param viewer |
| 166 | * instance of TableViewer |
| 167 | */ |
| 168 | protected void setViewerCellModifier(TableViewer viewer) { |
| 169 | ObservableCellModifier cellModifier = createViewerCellModifier(); |
| 170 | cellModifier.addObserver(this); |
| 171 | viewer.setCellModifier(cellModifier); |
| 172 | } |
| 173 | |
| 174 | /** Set a SelectionListener for the Delete-Button */ |
| 175 | protected abstract SelectionListener createDeleteButtonListener(); |
| 176 | |
| 177 | protected abstract String[] getTableColumnNames(); |
| 178 | |
| 179 | protected abstract boolean canAddButonCreated(); |
| 180 | protected abstract boolean canDeleteButonCreated(); |
| 181 | |
| 182 | /** Create a CellEditors for Viewer. */ |
| 183 | protected abstract CellEditor[] createViewerCellEditors(Table table); |
| 184 | |
| 185 | protected abstract ObservableCellModifier createViewerCellModifier(); |
| 186 | |
| 187 | /** Set a CellModifier for TabelViewer. */ |
| 188 | public void setViewerCellModifier(ICellModifier modifier){ |
| 189 | Assert.isNotNull(viewer); |
| 190 | viewer.setCellModifier(modifier); |
| 191 | } |
| 192 | |
| 193 | public void addViewerSelectionChangedListener(ISelectionChangedListener listener){ |
| 194 | Assert.isNotNull(viewer); |
| 195 | viewer.addSelectionChangedListener(listener); |
| 196 | } |
| 197 | |
| 198 | /** Create a SelectionListener for the Add-Button */ |
| 199 | protected abstract SelectionListener createAddButtonActionListener(); |
| 200 | |
| 201 | /** Set a input for the TableViewer */ |
| 202 | public void setViewerInput(Object input) { |
| 203 | Assert.isNotNull(viewer); |
| 204 | viewer.setInput(input); |
| 205 | } |
| 206 | |
| 207 | |
| 208 | /** Set a ContentProvider for the TableViewer */ |
| 209 | public void setViewerContentProvider(IContentProvider contentProvider) { |
| 210 | Assert.isNotNull(viewer); |
| 211 | viewer.setContentProvider(contentProvider); |
| 212 | } |
| 213 | |
| 214 | /** Set a LabelProvider for the TableViewer */ |
| 215 | public void setViewerLabelProvider(IBaseLabelProvider labelProvider) { |
| 216 | Assert.isNotNull(viewer); |
| 217 | viewer.setLabelProvider(labelProvider); |
| 218 | } |
| 219 | |
| 220 | public void refresh() { |
| 221 | Assert.isNotNull(viewer); |
| 222 | viewer.refresh(); |
| 223 | } |
| 224 | |
| 225 | protected void setDeleteButtonEnabled(boolean enabled) { |
| 226 | deleteButton.setEnabled(enabled); |
| 227 | } |
| 228 | |
| 229 | public EObject getSelectedObject() { |
| 230 | return selectedObject; |
| 231 | } |
| 232 | |
| 233 | public TableViewer getViewer(){ |
| 234 | return viewer; |
| 235 | } |
| 236 | |
| 237 | /* (non-Javadoc) |
| 238 | * @see java.util.Observer#update(java.util.Observable, java.lang.Object) |
| 239 | */ |
| 240 | public void update(Observable o, Object arg) { |
| 241 | if (viewer != null){ |
| 242 | viewer.refresh(); |
| 243 | } |
| 244 | } |
| 245 | } |