net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpeclipse/wizards/html/TableElementWizardPage.java

   1 /*
   2  * $Id: TableElementWizardPage.java,v 1.2 2006-10-21 23:18:43 pombredanne Exp $
   3  * Copyright Narushima Hironori. All rights reserved.
   4  */
   5 package net.sourceforge.phpeclipse.wizards.html;
   6
   7 import java.io.IOException;
   8
   9 import javax.xml.parsers.ParserConfigurationException;
  10
  11 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  12
  13 import org.eclipse.jface.util.IPropertyChangeListener;
  14 import org.eclipse.jface.util.PropertyChangeEvent;
  15 import org.eclipse.jface.viewers.CellEditor;
  16 import org.eclipse.jface.viewers.ISelectionChangedListener;
  17 import org.eclipse.jface.viewers.IStructuredSelection;
  18 import org.eclipse.jface.viewers.SelectionChangedEvent;
  19 import org.eclipse.jface.viewers.TableViewer;
  20 import org.eclipse.jface.viewers.TextCellEditor;
  21 import org.eclipse.swt.SWT;
  22 import org.eclipse.swt.events.ModifyEvent;
  23 import org.eclipse.swt.events.ModifyListener;
  24 import org.eclipse.swt.events.SelectionEvent;
  25 import org.eclipse.swt.events.SelectionListener;
  26 import org.eclipse.swt.layout.GridData;
  27 import org.eclipse.swt.layout.GridLayout;
  28 import org.eclipse.swt.widgets.Button;
  29 import org.eclipse.swt.widgets.Combo;
  30 import org.eclipse.swt.widgets.Composite;
  31 import org.eclipse.swt.widgets.Label;
  32 import org.eclipse.swt.widgets.Table;
  33 import org.eclipse.swt.widgets.TableColumn;
  34 import org.eclipse.swt.widgets.Text;
  35 import org.w3c.dom.Element;
  36 import org.xml.sax.SAXException;
  37
  38 /**
  39  * TableElementWizardPage.
  40  */
  41 public class TableElementWizardPage extends EditElementWizardPage {
  42
  43         final public static int COLUMNS_MAX = 32, ROWS_MAX = 256;
  44
  45         final static String[] expandStyleLabels = { "Flat", "Table", "Enumerate", };
  46
  47         TableElementModel model;
  48
  49         TableViewer viewer;
  50
  51         CellEditor[] editors;
  52
  53         Combo expandStyleCombo = null;
  54
  55         Text colsText, rowsText;
  56
  57         Button addButton, removeButton, upButton, downButton;
  58
  59         SelectionListener buttonListener = new SelectionListener() {
  60                 public void widgetSelected(SelectionEvent ev) {
  61                         Element e = getCurrentSelection();
  62                         if (ev.widget == addButton) {
  63                                 model.insertNewRowBefore(e);
  64                         } else if (ev.widget == removeButton) {
  65                                 model.removeRow(e);
  66                         } else if (ev.widget == upButton) {
  67                                 model.move(e, -1);
  68                         } else if (ev.widget == downButton) {
  69                                 model.move(e, 1);
  70                         }
  71                         refreshAll();
  72                 }
  73
  74                 public void widgetDefaultSelected(SelectionEvent e) {
  75                 }
  76         };
  77
  78         ModifyListener cellCountChangeListener = new ModifyListener() {
  79                 public void modifyText(ModifyEvent e) {
  80                         try {
  81                                 if (e.widget == colsText) {
  82                                         int cols = Integer.parseInt(colsText.getText());
  83                                         if (cols < 1)
  84                                                 cols = 1;
  85                                         if (cols > COLUMNS_MAX)
  86                                                 cols = COLUMNS_MAX;
  87                                         model.setColumnCount(cols);
  88                                 } else if (e.widget == rowsText) {
  89                                         int rows = Integer.parseInt(rowsText.getText());
  90                                         if (rows < 1)
  91                                                 rows = 1;
  92                                         if (rows > ROWS_MAX)
  93                                                 rows = ROWS_MAX;
  94                                         model.setRowCount(rows);
  95                                 }
  96                                 refreshAll();
  97                         } catch (NumberFormatException x) {
  98                         }
  99                 }
 100         };
 101
 102         public TableElementWizardPage() {
 103                 super("TableElementWizardPage");
 104                 setTitle("Table");
 105                 setDescription("Edit table element and cells modifier.");
 106         }
 107
 108         public String getPreviewText() {
 109                 if (model == null) {
 110                         initModel();
 111                 }
 112                 return (model != null) ? model.expandCodes() : null;
 113         }
 114
 115         void initModel() {
 116                 String content = ((EditElementWizard) getWizard()).getSelection()
 117                                 .getText().trim();
 118                 try {
 119                         model = new TableElementModel(content, getEditType() == NEW);
 120                 } catch (ParserConfigurationException e) {
 121                         PHPeclipsePlugin.log(e);
 122                 } catch (SAXException e) {
 123                         PHPeclipsePlugin.log(e);
 124                 } catch (IOException e) {
 125                         PHPeclipsePlugin.log(e);
 126                 }
 127         }
 128
 129         protected void createChildControl(Composite parent) {
 130                 parent.setLayout(new GridLayout(2, false));
 131
 132                 // table settings
 133                 viewer = new TableViewer(parent, SWT.SINGLE | SWT.FULL_SELECTION
 134                                 | SWT.BORDER);
 135                 refreshTableHeaderColumns();
 136
 137                 viewer.setContentProvider(new TableElementContentProvider());
 138                 viewer.setLabelProvider(new TableElementLabelProvider());
 139                 viewer.setCellModifier(new TableElementCellModifier(
 140                                 new IPropertyChangeListener() {
 141                                         public void propertyChange(PropertyChangeEvent event) {
 142                                                 refreshAll();
 143                                         }
 144                                 }));
 145
 146                 viewer.setInput(model);
 147                 viewer.addSelectionChangedListener(new ISelectionChangedListener() {
 148                         public void selectionChanged(SelectionChangedEvent event) {
 149                                 refreshButtonState();
 150                                 refreshPreview();
 151                         }
 152                 });
 153
 154                 Table table = viewer.getTable();
 155                 table.setLinesVisible(true);
 156                 table.setHeaderVisible(true);
 157
 158                 GridData gd = new GridData(GridData.FILL_BOTH);
 159                 gd.verticalSpan = 2;
 160                 table.setLayoutData(gd);
 161
 162                 // text input area setting
 163                 Composite textInputArea = new Composite(parent, SWT.NONE);
 164                 textInputArea.setLayout(new GridLayout(1, false));
 165                 textInputArea.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL
 166                                 | GridData.VERTICAL_ALIGN_BEGINNING));
 167                 rowsText = createNumInputText(textInputArea, "&Rows:");
 168                 colsText = createNumInputText(textInputArea, "&Columns:");
 169
 170                 // button area.
 171                 Composite buttonArea = new Composite(parent, SWT.NONE);
 172                 buttonArea.setLayout(new GridLayout(1, false));
 173                 buttonArea.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL
 174                                 | GridData.VERTICAL_ALIGN_END));
 175                 addButton = createButton(buttonArea, "&Add");
 176                 removeButton = createButton(buttonArea, "&Remove");
 177                 upButton = createButton(buttonArea, "&Up");
 178                 downButton = createButton(buttonArea, "&Down");
 179
 180                 // init state
 181                 TableColumn[] cols = table.getColumns();
 182                 for (int i = 0; i < cols.length; i++) {
 183                         cols[i].pack();
 184                 }
 185                 refreshTableLengthText();
 186                 refreshButtonState();
 187         }
 188
 189         Button createButton(Composite parent, String text) {
 190                 Button button = new Button(parent, SWT.NONE);
 191                 button.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
 192                 button.setText(text);
 193                 button.addSelectionListener(buttonListener);
 194                 return button;
 195         }
 196
 197         Text createNumInputText(Composite parent, String label) {
 198                 Label labe = new Label(parent, SWT.NONE);
 199                 labe.setText(label);
 200
 201                 Text text = new Text(parent, SWT.BORDER);
 202                 text.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
 203                 text.setTextLimit(2);
 204                 text.addVerifyListener(new NumVerifyListener());
 205                 text.addModifyListener(cellCountChangeListener);
 206                 return text;
 207         }
 208
 209         void refreshAll() {
 210                 refreshTableHeaderColumns();
 211                 refreshTableLengthText();
 212                 refreshButtonState();
 213                 refreshPreview();
 214                 viewer.refresh();
 215         }
 216
 217         void refreshTableHeaderColumns() {
 218                 if (model == null) {
 219                         initModel();
 220                 }
 221
 222                 Table table = viewer.getTable();
 223                 TableColumn[] cols = table.getColumns();
 224                 CellEditor[] editors = viewer.getCellEditors();
 225
 226                 String[] props = model.getColumnProperties();
 227                 viewer.setColumnProperties(props);
 228                 // modify cell length
 229                 if (props.length > cols.length) {
 230                         CellEditor[] newEditors = new CellEditor[props.length];
 231                         if (editors != null) {
 232                                 System.arraycopy(editors, 0, newEditors, 0, editors.length);
 233                         }
 234                         for (int i = cols.length; i < props.length; i++) {
 235                                 TableColumn col = new TableColumn(table, SWT.LEFT);
 236                                 col.setText(TableElementModel.toColumnName(i));
 237                                 newEditors[i] = new TextCellEditor(table);
 238                         }
 239                         viewer.setCellEditors(newEditors);
 240                 } else if (props.length < cols.length) {
 241                         for (int i = props.length; i < cols.length; i++) {
 242                                 cols[i].dispose();
 243                                 editors[i].dispose();
 244                         }
 245                         CellEditor[] newEditors = new CellEditor[props.length];
 246                         System.arraycopy(editors, 0, newEditors, 0, props.length);
 247                         viewer.setCellEditors(newEditors);
 248                 }
 249
 250                 // adjust table fields.
 251                 viewer.refresh();
 252                 cols = table.getColumns();
 253                 for (int i = 0; i < cols.length; i++) {
 254                         cols[i].pack();
 255                 }
 256         }
 257
 258         void refreshTableLengthText() {
 259                 String cols = String.valueOf(model.getColumnCount());
 260                 if (!cols.equals(colsText.getText())) {
 261                         colsText.setText(cols);
 262                 }
 263                 String rows = String.valueOf(model.getRowCount());
 264                 if (!rows.equals(rowsText.getText())) {
 265                         rowsText.setText(rows);
 266                 }
 267         }
 268
 269         void refreshButtonState() {
 270                 Element e = getCurrentSelection();
 271                 boolean enable = (e != null);
 272
 273                 removeButton.setEnabled(enable);
 274                 int currentIndex = -1;
 275                 Element[] rows = model.getRows();
 276                 for (int i = 0; i < rows.length; i++) {
 277                         if (rows[i].equals(e)) {
 278                                 currentIndex = i;
 279                         }
 280                 }
 281                 upButton.setEnabled(enable && currentIndex > 0);
 282                 downButton.setEnabled(enable && currentIndex < rows.length - 1);
 283         }
 284
 285         Element getCurrentSelection() {
 286                 IStructuredSelection sel = (IStructuredSelection) viewer.getSelection();
 287                 return (sel != null) ? (Element) sel.getFirstElement() : null;
 288         }
 289
 290 }