net.sourceforge.phpeclipse.debug.ui/src/net/sourceforge/phpdt/internal/debug/ui/preferences/PHPInterpreterPreferencePage.java

   1 package net.sourceforge.phpdt.internal.debug.ui.preferences;
   2
   3 import java.io.File;
   4 import java.util.ArrayList;
   5 import java.util.List;
   6
   7 import net.sourceforge.phpdt.internal.debug.ui.PHPDebugUiMessages;
   8 import net.sourceforge.phpdt.internal.launching.PHPInterpreter;
   9 import net.sourceforge.phpdt.internal.launching.PHPRuntime;
  10
  11 import org.eclipse.core.runtime.Platform;
  12 import org.eclipse.jface.preference.PreferencePage;
  13 import org.eclipse.jface.viewers.CheckStateChangedEvent;
  14 import org.eclipse.jface.viewers.CheckboxTableViewer;
  15 import org.eclipse.jface.viewers.DoubleClickEvent;
  16 import org.eclipse.jface.viewers.ICheckStateListener;
  17 import org.eclipse.jface.viewers.IDoubleClickListener;
  18 import org.eclipse.jface.viewers.ISelectionChangedListener;
  19 import org.eclipse.jface.viewers.IStructuredSelection;
  20 import org.eclipse.jface.viewers.SelectionChangedEvent;
  21 import org.eclipse.swt.SWT;
  22 import org.eclipse.swt.layout.GridData;
  23 import org.eclipse.swt.layout.GridLayout;
  24 import org.eclipse.swt.widgets.Button;
  25 import org.eclipse.swt.widgets.Composite;
  26 import org.eclipse.swt.widgets.Control;
  27 import org.eclipse.swt.widgets.Event;
  28 import org.eclipse.swt.widgets.FileDialog;
  29 import org.eclipse.swt.widgets.Listener;
  30 import org.eclipse.swt.widgets.Shell;
  31 import org.eclipse.swt.widgets.Table;
  32 import org.eclipse.swt.widgets.TableColumn;
  33 import org.eclipse.swt.widgets.TableItem;
  34 import org.eclipse.ui.IWorkbench;
  35 import org.eclipse.ui.IWorkbenchPreferencePage;
  36
  37 public class PHPInterpreterPreferencePage extends PreferencePage implements
  38                 IWorkbenchPreferencePage {
  39         protected CheckboxTableViewer tableViewer;
  40
  41         protected Button addButton, editButton, removeButton;
  42
  43         public PHPInterpreterPreferencePage() {
  44                 super();
  45         }
  46
  47         public void init(IWorkbench workbench) {
  48         }
  49
  50         protected Control createContents(Composite parent) {
  51                 noDefaultAndApplyButton();
  52
  53                 Composite composite = createPageRoot(parent);
  54                 Table table = createInstalledInterpretersTable(composite);
  55                 createInstalledInterpretersTableViewer(table);
  56                 createButtonGroup(composite);
  57
  58                 tableViewer
  59                                 .setInput(PHPRuntime.getDefault().getInstalledInterpreters());
  60                 PHPInterpreter selectedInterpreter = PHPRuntime.getDefault()
  61                                 .getSelectedInterpreter();
  62                 if (selectedInterpreter != null)
  63                         tableViewer.setChecked(selectedInterpreter, true);
  64
  65                 enableButtons();
  66
  67                 return composite;
  68         }
  69
  70         protected void createButtonGroup(Composite composite) {
  71                 Composite buttons = new Composite(composite, SWT.NULL);
  72                 buttons.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
  73                 GridLayout layout = new GridLayout();
  74                 layout.marginHeight = 0;
  75                 layout.marginWidth = 0;
  76                 buttons.setLayout(layout);
  77
  78                 addButton = new Button(buttons, SWT.PUSH);
  79                 addButton.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
  80                 addButton.setText(PHPDebugUiMessages
  81                                 .getString("PHPInterpreterPreferencePage.addButton.label")); //$NON-NLS-1$
  82                 addButton.addListener(SWT.Selection, new Listener() {
  83                         public void handleEvent(Event evt) {
  84                                 addInterpreter();
  85                         }
  86                 });
  87
  88                 editButton = new Button(buttons, SWT.PUSH);
  89                 editButton.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
  90                 editButton.setText(PHPDebugUiMessages
  91                                 .getString("PHPInterpreterPreferencePage.editButton.label")); //$NON-NLS-1$
  92                 editButton.addListener(SWT.Selection, new Listener() {
  93                         public void handleEvent(Event evt) {
  94                                 editInterpreter();
  95                         }
  96                 });
  97
  98                 removeButton = new Button(buttons, SWT.PUSH);
  99                 removeButton.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 100                 removeButton.setText(PHPDebugUiMessages
 101                                 .getString("PHPInterpreterPreferencePage.removeButton.label")); //$NON-NLS-1$
 102                 removeButton.addListener(SWT.Selection, new Listener() {
 103                         public void handleEvent(Event evt) {
 104                                 removeInterpreter();
 105                         }
 106                 });
 107         }
 108
 109         protected void createInstalledInterpretersTableViewer(Table table) {
 110                 tableViewer = new CheckboxTableViewer(table);
 111
 112                 tableViewer.setLabelProvider(new PHPInterpreterLabelProvider());
 113                 tableViewer.setContentProvider(new PHPInterpreterContentProvider());
 114
 115                 tableViewer
 116                                 .addSelectionChangedListener(new ISelectionChangedListener() {
 117                                         public void selectionChanged(SelectionChangedEvent evt) {
 118                                                 enableButtons();
 119                                         }
 120                                 });
 121
 122                 tableViewer.addCheckStateListener(new ICheckStateListener() {
 123                         public void checkStateChanged(CheckStateChangedEvent event) {
 124                                 updateSelectedInterpreter(event.getElement());
 125                         }
 126                 });
 127
 128                 tableViewer.addDoubleClickListener(new IDoubleClickListener() {
 129                         public void doubleClick(DoubleClickEvent e) {
 130                                 editInterpreter();
 131                         }
 132                 });
 133         }
 134
 135         protected Table createInstalledInterpretersTable(Composite composite) {
 136                 Table table = new Table(composite, SWT.CHECK | SWT.BORDER
 137                                 | SWT.FULL_SELECTION);
 138
 139                 GridData data = new GridData(GridData.FILL_BOTH);
 140                 data.widthHint = convertWidthInCharsToPixels(80);
 141                 data.heightHint = convertHeightInCharsToPixels(10);
 142                 table.setLayoutData(data);
 143                 table.setHeaderVisible(true);
 144                 table.setLinesVisible(false);
 145
 146                 TableColumn column = new TableColumn(table, SWT.NULL);
 147                 column
 148                                 .setText(PHPDebugUiMessages
 149                                                 .getString("PHPInterpreterPreferencePage.PHPInterpreterTable.interpreterPath")); //$NON-NLS-1$
 150                 column.setWidth(400);
 151
 152                 // column = new TableColumn(table, SWT.NULL);
 153                 // column.setText(PHPDebugUiMessages.getString("PHPInterpreterPreferencePage.PHPInterpreterTable.interpreterPath"));
 154                 // //$NON-NLS-1$
 155                 // column.setWidth(350);
 156
 157                 return table;
 158         }
 159
 160         protected Composite createPageRoot(Composite parent) {
 161                 Composite composite = new Composite(parent, SWT.NULL);
 162                 GridLayout layout = new GridLayout();
 163                 layout.numColumns = 2;
 164                 composite.setLayout(layout);
 165                 return composite;
 166         }
 167
 168         protected void addInterpreter() {
 169                 PHPInterpreter newInterpreter = new PHPInterpreter(null);
 170                 File phpRuntime = getFile(getShell(), null);
 171                 if (phpRuntime != null) {
 172                         newInterpreter.setInstallLocation(phpRuntime);
 173                         tableViewer.add(newInterpreter);
 174                 }
 175         }
 176
 177         protected void removeInterpreter() {
 178                 tableViewer.remove(getSelectedInterpreter());
 179         }
 180
 181         protected void enableButtons() {
 182                 if (getSelectedInterpreter() != null) {
 183                         editButton.setEnabled(true);
 184                         removeButton.setEnabled(true);
 185                 } else {
 186                         editButton.setEnabled(false);
 187                         removeButton.setEnabled(false);
 188                 }
 189         }
 190
 191         protected void updateSelectedInterpreter(Object interpreter) {
 192                 Object[] checkedElements = tableViewer.getCheckedElements();
 193                 for (int i = 0; i < checkedElements.length; i++) {
 194                         tableViewer.setChecked(checkedElements[i], false);
 195                 }
 196
 197                 tableViewer.setChecked(interpreter, true);
 198         }
 199
 200         protected void editInterpreter() {
 201                 PHPInterpreter anInterpreter = getSelectedInterpreter();
 202                 File phpRuntime = anInterpreter.getInstallLocation();
 203                 if (phpRuntime != null) {
 204                         File parent = phpRuntime.getParentFile();
 205                         phpRuntime = getFile(getShell(), parent);
 206                 } else {
 207                         phpRuntime = getFile(getShell(), null);
 208                 }
 209                 if (phpRuntime != null) {
 210                         anInterpreter.setInstallLocation(phpRuntime);
 211                         tableViewer.update(anInterpreter, null);
 212                 }
 213
 214         }
 215
 216         protected PHPInterpreter getSelectedInterpreter() {
 217                 IStructuredSelection selection = (IStructuredSelection) tableViewer
 218                                 .getSelection();
 219                 return (PHPInterpreter) selection.getFirstElement();
 220         }
 221
 222         public boolean performOk() {
 223                 TableItem[] tableItems = tableViewer.getTable().getItems();
 224                 List installedInterpreters = new ArrayList(tableItems.length);
 225                 for (int i = 0; i < tableItems.length; i++)
 226                         installedInterpreters.add(tableItems[i].getData());
 227                 PHPRuntime.getDefault().setInstalledInterpreters(installedInterpreters);
 228
 229                 Object[] checkedElements = tableViewer.getCheckedElements();
 230                 if (checkedElements.length > 0)
 231                         PHPRuntime.getDefault().setSelectedInterpreter(
 232                                         (PHPInterpreter) checkedElements[0]);
 233
 234                 return super.performOk();
 235         }
 236
 237         /**
 238          * Helper to open the file chooser dialog.
 239          *
 240          * @param startingDirectory
 241          *            the directory to open the dialog on.
 242          * @return File The File the user selected or <code>null</code> if they do
 243          *         not.
 244          */
 245         public static File getFile(Shell shell, File startingDirectory) {
 246
 247                 FileDialog dialog = new FileDialog(shell, SWT.OPEN);
 248                 if (startingDirectory != null) {
 249                         dialog.setFileName(startingDirectory.getPath());
 250                 }
 251                 String operatingSystem = Platform.getOS();
 252                 if (operatingSystem.equals(Platform.OS_WIN32)) {
 253                         String[] extensions = { "*.exe" };
 254                         dialog.setFilterExtensions(extensions);
 255                 }
 256                 String file = dialog.open();
 257                 if (file != null) {
 258                         file = file.trim();
 259                         if (file.length() > 0)
 260                                 return new File(file);
 261                 }
 262
 263                 return null;
 264         }
 265 }