| /******************************************************************************* |
| * Copyright (c) 2005, 2006 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.dialogs; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.FocusAdapter; |
| import org.eclipse.swt.events.FocusEvent; |
| import org.eclipse.swt.events.KeyAdapter; |
| import org.eclipse.swt.events.KeyEvent; |
| import org.eclipse.swt.events.ModifyEvent; |
| import org.eclipse.swt.events.ModifyListener; |
| import org.eclipse.swt.events.MouseAdapter; |
| import org.eclipse.swt.events.MouseEvent; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.events.TraverseEvent; |
| import org.eclipse.swt.events.TraverseListener; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Listener; |
| import org.eclipse.swt.widgets.Text; |
| |
| import org.eclipse.jface.contentassist.SubjectControlContentAssistant; |
| import org.eclipse.jface.util.Assert; |
| import org.eclipse.jface.viewers.CellEditor; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.TableViewer; |
| |
| import org.eclipse.jdt.internal.corext.util.Messages; |
| |
| /** |
| * <code>TableTextCellEditor</code> is a copy of TextCellEditor, with the |
| * following changes: |
| * |
| * <ul> |
| * <li> modify events are sent out as the text is changed, and not only after |
| * editing is done </li> |
| * |
| * <li>a content assistant is supported</li> |
| * |
| * <li>the <code>Control</code> from <code>getControl(Composite)</code> |
| * does not notify registered FocusListeners. This is a workaround for bug |
| * 58777. </li> |
| * |
| * <li>the user can go to the next/previous row with up and down keys</li> |
| * </ul> |
| */ |
| public class TableTextCellEditor extends CellEditor { |
| public interface IActivationListener { |
| public void activate(); |
| } |
| |
| private final TableViewer fTableViewer; |
| private final int fColumn; |
| private final String fProperty; |
| /** |
| * The editor's value on activation. This value is reset to the |
| * cell when the editor is left via ESC key. |
| */ |
| String fOriginalValue; |
| SubjectControlContentAssistant fContentAssistant; |
| private IActivationListener fActivationListener; |
| |
| protected Text text; |
| |
| private boolean isSelection = false; |
| private boolean isDeleteable = false; |
| private boolean isSelectable = false; |
| |
| private static final int defaultStyle = SWT.SINGLE; |
| private ModifyListener fModifyListener; |
| |
| public TableTextCellEditor(TableViewer tableViewer, int column) { |
| super(tableViewer.getTable(), defaultStyle); |
| fTableViewer= tableViewer; |
| fColumn= column; |
| fProperty= (String) tableViewer.getColumnProperties()[column]; |
| } |
| |
| public void activate() { |
| super.activate(); |
| if (fActivationListener != null) |
| fActivationListener.activate(); |
| fOriginalValue= text.getText(); |
| } |
| |
| private void fireModifyEvent(Object newValue) { |
| fTableViewer.getCellModifier().modify( |
| ((IStructuredSelection) fTableViewer.getSelection()).getFirstElement(), |
| fProperty, newValue); |
| } |
| |
| protected void focusLost() { |
| if (fContentAssistant != null && fContentAssistant.hasProposalPopupFocus()) { |
| // skip focus lost if it went to the content assist popup |
| } else { |
| super.focusLost(); |
| } |
| } |
| |
| public void setContentAssistant(SubjectControlContentAssistant assistant) { |
| fContentAssistant= assistant; |
| } |
| |
| public void setActivationListener(IActivationListener listener) { |
| fActivationListener= listener; |
| } |
| |
| public Text getText() { |
| return text; |
| } |
| |
| protected void checkDeleteable() { |
| boolean oldIsDeleteable = isDeleteable; |
| isDeleteable = isDeleteEnabled(); |
| if (oldIsDeleteable != isDeleteable) { |
| fireEnablementChanged(DELETE); |
| } |
| } |
| |
| protected void checkSelectable() { |
| boolean oldIsSelectable = isSelectable; |
| isSelectable = isSelectAllEnabled(); |
| if (oldIsSelectable != isSelectable) { |
| fireEnablementChanged(SELECT_ALL); |
| } |
| } |
| |
| protected void checkSelection() { |
| boolean oldIsSelection = isSelection; |
| isSelection = text.getSelectionCount() > 0; |
| if (oldIsSelection != isSelection) { |
| fireEnablementChanged(COPY); |
| fireEnablementChanged(CUT); |
| } |
| } |
| |
| private ModifyListener getModifyListener() { |
| if (fModifyListener == null) { |
| fModifyListener = new ModifyListener() { |
| public void modifyText(ModifyEvent e) { |
| editOccured(e); |
| } |
| }; |
| } |
| return fModifyListener; |
| } |
| |
| /* (non-Javadoc) |
| * Method declared on CellEditor. |
| */ |
| protected Control createControl(Composite parent) { |
| //workaround for bug 58777: don't accept focus listeners on the text control |
| final Control[] textControl= new Control[1]; |
| Composite result= new Composite(parent, SWT.NONE) { |
| public void addListener(int eventType, final Listener listener) { |
| if (eventType != SWT.FocusIn && eventType != SWT.FocusOut) { |
| textControl[0].addListener(eventType, listener); |
| } |
| } |
| }; |
| result.setFont(parent.getFont()); |
| result.setBackground(parent.getBackground()); |
| result.setLayout(new FillLayout()); |
| |
| text = new Text(result, getStyle()); |
| textControl[0]= text; |
| text.addSelectionListener(new SelectionAdapter() { |
| public void widgetDefaultSelected(SelectionEvent e) { |
| handleDefaultSelection(e); |
| } |
| }); |
| text.addKeyListener(new KeyAdapter() { |
| public void keyPressed(KeyEvent e) { |
| // support switching rows while editing: |
| if (e.stateMask == SWT.MOD1 || e.stateMask == SWT.MOD2) { |
| if (e.keyCode == SWT.ARROW_UP || e.keyCode == SWT.ARROW_DOWN) { |
| // allow starting multi-selection even if in edit mode |
| deactivate(); |
| e.doit= false; |
| return; |
| } |
| } |
| |
| if (e.stateMask != SWT.NONE) |
| return; |
| |
| switch (e.keyCode) { |
| case SWT.ARROW_DOWN : |
| e.doit= false; |
| int nextRow= fTableViewer.getTable().getSelectionIndex() + 1; |
| if (nextRow >= fTableViewer.getTable().getItemCount()) |
| break; |
| editRow(nextRow); |
| break; |
| |
| case SWT.ARROW_UP : |
| e.doit= false; |
| int prevRow= fTableViewer.getTable().getSelectionIndex() - 1; |
| if (prevRow < 0) |
| break; |
| editRow(prevRow); |
| break; |
| |
| case SWT.F2 : |
| e.doit= false; |
| deactivate(); |
| break; |
| } |
| } |
| |
| private void editRow(int row) { |
| fTableViewer.getTable().setSelection(row); |
| IStructuredSelection newSelection= (IStructuredSelection) fTableViewer.getSelection(); |
| if (newSelection.size() == 1) |
| fTableViewer.editElement(newSelection.getFirstElement(), fColumn); |
| } |
| }); |
| text.addKeyListener(new KeyAdapter() { |
| // hook key pressed - see PR 14201 |
| public void keyPressed(KeyEvent e) { |
| keyReleaseOccured(e); |
| |
| // as a result of processing the above call, clients may have |
| // disposed this cell editor |
| if ((getControl() == null) || getControl().isDisposed()) |
| return; |
| checkSelection(); // see explaination below |
| checkDeleteable(); |
| checkSelectable(); |
| } |
| }); |
| text.addTraverseListener(new TraverseListener() { |
| public void keyTraversed(TraverseEvent e) { |
| if (e.detail == SWT.TRAVERSE_ESCAPE |
| || e.detail == SWT.TRAVERSE_RETURN) { |
| e.doit = false; |
| } |
| } |
| }); |
| // We really want a selection listener but it is not supported so we |
| // use a key listener and a mouse listener to know when selection changes |
| // may have occured |
| text.addMouseListener(new MouseAdapter() { |
| public void mouseUp(MouseEvent e) { |
| checkSelection(); |
| checkDeleteable(); |
| checkSelectable(); |
| } |
| }); |
| text.addFocusListener(new FocusAdapter() { |
| public void focusLost(FocusEvent e) { |
| TableTextCellEditor.this.focusLost(); |
| } |
| }); |
| text.setFont(parent.getFont()); |
| text.setBackground(parent.getBackground()); |
| text.setText("");//$NON-NLS-1$ |
| text.addModifyListener(getModifyListener()); |
| |
| return result; |
| } |
| |
| protected void fireCancelEditor() { |
| /* bug 58540: change signature refactoring interaction: validate as you type [refactoring] */ |
| text.setText(fOriginalValue); |
| super.fireApplyEditorValue(); |
| } |
| |
| /** |
| * The <code>TextCellEditor</code> implementation of |
| * this <code>CellEditor</code> framework method returns |
| * the text string. |
| * |
| * @return the text string |
| */ |
| protected Object doGetValue() { |
| return text.getText(); |
| } |
| |
| protected void doSetFocus() { |
| if (text != null) { |
| text.selectAll(); |
| text.setFocus(); |
| checkSelection(); |
| checkDeleteable(); |
| checkSelectable(); |
| } |
| } |
| |
| /** |
| * The <code>TextCellEditor2</code> implementation of |
| * this <code>CellEditor</code> framework method accepts |
| * a text string (type <code>String</code>). |
| * |
| * @param value a text string (type <code>String</code>) |
| */ |
| protected void doSetValue(Object value) { |
| Assert.isTrue(text != null && (value instanceof String)); |
| text.removeModifyListener(getModifyListener()); |
| text.setText((String) value); |
| text.addModifyListener(getModifyListener()); |
| } |
| |
| /** |
| * Processes a modify event that occurred in this text cell editor. |
| * This framework method performs validation and sets the error message |
| * accordingly, and then reports a change via <code>fireEditorValueChanged</code>. |
| * Subclasses should call this method at appropriate times. Subclasses |
| * may extend or reimplement. |
| * |
| * @param e the SWT modify event |
| */ |
| protected void editOccured(ModifyEvent e) { |
| String value = text.getText(); |
| boolean oldValidState = isValueValid(); |
| boolean newValidState = isCorrect(value); |
| if (!newValidState) { |
| // try to insert the current value into the error message. |
| setErrorMessage(Messages.format(getErrorMessage(), |
| new Object[] { value })); |
| } |
| valueChanged(oldValidState, newValidState); |
| fireModifyEvent(text.getText()); // update model on-the-fly |
| } |
| |
| public LayoutData getLayoutData() { |
| return new LayoutData(); |
| } |
| |
| protected void handleDefaultSelection(SelectionEvent event) { |
| // same with enter-key handling code in keyReleaseOccured(e); |
| fireApplyEditorValue(); |
| deactivate(); |
| } |
| |
| public boolean isCopyEnabled() { |
| if (text == null || text.isDisposed()) |
| return false; |
| return text.getSelectionCount() > 0; |
| } |
| |
| public boolean isCutEnabled() { |
| if (text == null || text.isDisposed()) |
| return false; |
| return text.getSelectionCount() > 0; |
| } |
| |
| public boolean isDeleteEnabled() { |
| if (text == null || text.isDisposed()) |
| return false; |
| return text.getSelectionCount() > 0 |
| || text.getCaretPosition() < text.getCharCount(); |
| } |
| |
| public boolean isPasteEnabled() { |
| if (text == null || text.isDisposed()) |
| return false; |
| return true; |
| } |
| |
| public boolean isSelectAllEnabled() { |
| if (text == null || text.isDisposed()) |
| return false; |
| return text.getCharCount() > 0; |
| } |
| |
| protected void keyReleaseOccured(KeyEvent keyEvent) { |
| if (keyEvent.character == '\r') { // Return key |
| // Enter is handled in handleDefaultSelection. |
| // Do not apply the editor value in response to an Enter key event |
| // since this can be received from the IME when the intent is -not- |
| // to apply the value. |
| // See bug 39074 [CellEditors] [DBCS] canna input mode fires bogus event from Text Control |
| // |
| // An exception is made for Ctrl+Enter for multi-line texts, since |
| // a default selection event is not sent in this case. |
| if (text != null && !text.isDisposed() |
| && (text.getStyle() & SWT.MULTI) != 0) { |
| if ((keyEvent.stateMask & SWT.CTRL) != 0) { |
| super.keyReleaseOccured(keyEvent); |
| } |
| } |
| return; |
| } |
| super.keyReleaseOccured(keyEvent); |
| } |
| |
| public void performCopy() { |
| text.copy(); |
| } |
| |
| public void performCut() { |
| text.cut(); |
| checkSelection(); |
| checkDeleteable(); |
| checkSelectable(); |
| } |
| |
| public void performDelete() { |
| if (text.getSelectionCount() > 0) |
| // remove the contents of the current selection |
| text.insert(""); //$NON-NLS-1$ |
| else { |
| // remove the next character |
| int pos = text.getCaretPosition(); |
| if (pos < text.getCharCount()) { |
| text.setSelection(pos, pos + 1); |
| text.insert(""); //$NON-NLS-1$ |
| } |
| } |
| checkSelection(); |
| checkDeleteable(); |
| checkSelectable(); |
| } |
| |
| public void performPaste() { |
| text.paste(); |
| checkSelection(); |
| checkDeleteable(); |
| checkSelectable(); |
| } |
| |
| public void performSelectAll() { |
| text.selectAll(); |
| checkSelection(); |
| checkDeleteable(); |
| } |
| |
| } |
