/*
* Copyright (c) 2012, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.eclipse.org/legal/epl-v10.html
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.dart.tools.ui.internal.refactoring;
import com.google.dart.engine.services.refactoring.Parameter;
import com.google.dart.tools.ui.internal.dialogs.TableTextCellEditor;
import com.google.dart.tools.ui.internal.dialogs.TextFieldNavigationHandler;
import com.google.dart.tools.ui.internal.refactoring.contentassist.VariableNamesProcessor;
import com.google.dart.tools.ui.internal.util.ControlContentAssistHelper;
import com.google.dart.tools.ui.internal.util.SWTUtil;
import com.google.dart.tools.ui.internal.util.TableLayoutComposite;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.contentassist.SubjectControlContentAssistant;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.ColumnWeightData;
import org.eclipse.jface.viewers.ICellModifier;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITableFontProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
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.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.contentassist.ContentAssistHandler;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
/**
* A special control to edit and reorder method parameters.
*
* @coverage dart.editor.ui.refactoring.ui
*/
@SuppressWarnings("deprecation")
public class ChangeParametersControl_OLD extends Composite {
public static class Mode {
private final String fName;
public static final Mode EXTRACT_METHOD = new Mode("EXTRACT_METHOD"); //$NON-NLS-1$
public static final Mode CHANGE_METHOD_SIGNATURE = new Mode("CHANGE_METHOD_SIGNATURE"); //$NON-NLS-1$
public static final Mode INTRODUCE_PARAMETER = new Mode("INTRODUCE_PARAMETER"); //$NON-NLS-1$
private Mode(String name) {
fName = name;
}
public boolean canAddParameters() {
return this == Mode.CHANGE_METHOD_SIGNATURE;
}
public boolean canChangeDefault() {
return this == Mode.CHANGE_METHOD_SIGNATURE;
}
public boolean canChangeTypes() {
return this == EXTRACT_METHOD || this == CHANGE_METHOD_SIGNATURE;
}
@Override
public String toString() {
return fName;
}
}
private static class ParameterInfoContentProvider implements IStructuredContentProvider {
@Override
public void dispose() {
// do nothing
}
@Override
@SuppressWarnings("unchecked")
public Object[] getElements(Object inputElement) {
return removeMarkedAsDeleted((List<Parameter>) inputElement);
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
// do nothing
}
private Parameter[] removeMarkedAsDeleted(List<Parameter> parameters) {
List<Parameter> result = new ArrayList<Parameter>(parameters.size());
for (Iterator<Parameter> iter = parameters.iterator(); iter.hasNext();) {
Parameter parameter = iter.next();
if (!parameter.isDeleted()) {
result.add(parameter);
}
}
return result.toArray(new Parameter[result.size()]);
}
}
private static class ParameterInfoLabelProvider extends LabelProvider implements
ITableLabelProvider, ITableFontProvider {
@Override
public Image getColumnImage(Object element, int columnIndex) {
return null;
}
@Override
public String getColumnText(Object element, int columnIndex) {
Parameter parameter = (Parameter) element;
switch (columnIndex) {
case TYPE_PROP:
return parameter.getNewTypeName();
case NEWNAME_PROP:
return parameter.getNewName();
case DEFAULT_PROP:
if (parameter.isAdded()) {
return parameter.getDefaultValue();
} else {
return "-"; //$NON-NLS-1$
}
default:
throw new IllegalArgumentException(columnIndex + ": " + element); //$NON-NLS-1$
}
}
@Override
public Font getFont(Object element, int columnIndex) {
Parameter parameter = (Parameter) element;
if (parameter.isAdded()) {
return JFaceResources.getFontRegistry().getBold(JFaceResources.DIALOG_FONT);
} else {
return null;
}
}
}
private class ParametersCellModifier implements ICellModifier {
@Override
public boolean canModify(Object element, String property) {
Assert.isTrue(element instanceof Parameter);
if (property.equals(PROPERTIES[TYPE_PROP])) {
return fMode.canChangeTypes();
} else if (property.equals(PROPERTIES[NEWNAME_PROP])) {
return true;
} else if (property.equals(PROPERTIES[DEFAULT_PROP])) {
return (((Parameter) element).isAdded());
}
Assert.isTrue(false);
return false;
}
@Override
public Object getValue(Object element, String property) {
Assert.isTrue(element instanceof Parameter);
if (property.equals(PROPERTIES[TYPE_PROP])) {
return ((Parameter) element).getNewTypeName();
} else if (property.equals(PROPERTIES[NEWNAME_PROP])) {
return ((Parameter) element).getNewName();
} else if (property.equals(PROPERTIES[DEFAULT_PROP])) {
return ((Parameter) element).getDefaultValue();
}
Assert.isTrue(false);
return null;
}
@Override
public void modify(Object element, String property, Object value) {
if (element instanceof TableItem) {
element = ((TableItem) element).getData();
}
if (!(element instanceof Parameter)) {
return;
}
boolean unchanged;
Parameter parameter = (Parameter) element;
if (property.equals(PROPERTIES[NEWNAME_PROP])) {
unchanged = parameter.getNewName().equals(value);
parameter.setNewName((String) value);
} else if (property.equals(PROPERTIES[DEFAULT_PROP])) {
unchanged = parameter.getDefaultValue().equals(value);
parameter.setDefaultValue((String) value);
} else if (property.equals(PROPERTIES[TYPE_PROP])) {
unchanged = parameter.getNewTypeName().equals(value);
parameter.setNewTypeName((String) value);
} else {
throw new IllegalStateException();
}
if (!unchanged) {
ChangeParametersControl_OLD.this.fListener.parameterChanged(parameter);
ChangeParametersControl_OLD.this.fTableViewer.update(parameter, new String[] {property});
}
}
}
private static final String[] PROPERTIES = {"type", "new", "default"}; //$NON-NLS-2$ //$NON-NLS-1$ //$NON-NLS-3$
private static final int TYPE_PROP = 0;
private static final int NEWNAME_PROP = 1;
private static final int DEFAULT_PROP = 2;
private static final int ROW_COUNT = 7;
private static void moveUp(List<Parameter> elements, List<Parameter> move) {
List<Parameter> res = new ArrayList<Parameter>(elements.size());
List<Parameter> deleted = new ArrayList<Parameter>();
Parameter floating = null;
for (Iterator<Parameter> iter = elements.iterator(); iter.hasNext();) {
Parameter curr = iter.next();
if (move.contains(curr)) {
res.add(curr);
} else if (curr.isDeleted()) {
deleted.add(curr);
} else {
if (floating != null) {
res.add(floating);
}
floating = curr;
}
}
if (floating != null) {
res.add(floating);
}
res.addAll(deleted);
elements.clear();
for (Iterator<Parameter> iter = res.iterator(); iter.hasNext();) {
elements.add(iter.next());
}
}
private final Mode fMode;
private final IParameterListChangeListener_OLD fListener;
private List<Parameter> fParameters;
private final String[] fParamNameProposals;
private ContentAssistHandler fNameContentAssistHandler;
private TableViewer fTableViewer;
private Button fUpButton;
private Button fDownButton;
private Button fEditButton;
private Button fAddButton;
private Button fRemoveButton;
public ChangeParametersControl_OLD(Composite parent, int style, String label,
IParameterListChangeListener_OLD listener, Mode mode) {
this(parent, style, label, listener, mode, new String[0]);
}
/**
* @param label the label before the table or <code>null</code>
* @param typeContext the package in which to complete types
*/
public ChangeParametersControl_OLD(Composite parent, int style, String label,
IParameterListChangeListener_OLD listener, Mode mode, String[] paramNameProposals) {
super(parent, style);
Assert.isNotNull(listener);
fListener = listener;
fMode = mode;
fParamNameProposals = paramNameProposals;
GridLayout layout = new GridLayout();
layout.numColumns = 2;
layout.marginWidth = 0;
layout.marginHeight = 0;
setLayout(layout);
if (label != null) {
Label tableLabel = new Label(this, SWT.NONE);
GridData labelGd = new GridData();
labelGd.horizontalSpan = 2;
tableLabel.setLayoutData(labelGd);
tableLabel.setText(label);
}
createParameterList(this);
createButtonComposite(this);
}
public void editParameter(Parameter parameter) {
fTableViewer.getControl().setFocus();
if (!parameter.isDeleted()) {
fTableViewer.setSelection(new StructuredSelection(parameter), true);
updateButtonsEnabledState();
editColumnOrNextPossible(NEWNAME_PROP);
return;
}
}
// ---- Parameter table -----------------------------------------------------------------------------------
public void setInput(List<Parameter> parameters) {
Assert.isNotNull(parameters);
fParameters = parameters;
fTableViewer.setInput(fParameters);
if (fParameters.size() > 0) {
fTableViewer.setSelection(new StructuredSelection(fParameters.get(0)));
}
}
private void addCellEditors() {
fTableViewer.setColumnProperties(PROPERTIES);
final TableTextCellEditor editors[] = new TableTextCellEditor[PROPERTIES.length];
editors[TYPE_PROP] = new TableTextCellEditor(fTableViewer, TYPE_PROP);
editors[NEWNAME_PROP] = new TableTextCellEditor(fTableViewer, NEWNAME_PROP);
editors[DEFAULT_PROP] = new TableTextCellEditor(fTableViewer, DEFAULT_PROP);
if (fMode.canChangeTypes()) {
// TODO(scheglov)
// SubjectControlContentAssistant assistant = installParameterTypeContentAssist(editors[TYPE_PROP].getText());
// editors[TYPE_PROP].setContentAssistant(assistant);
}
if (fParamNameProposals.length > 0) {
SubjectControlContentAssistant assistant = installParameterNameContentAssist(editors[NEWNAME_PROP].getText());
editors[NEWNAME_PROP].setContentAssistant(assistant);
}
for (int i = 0; i < editors.length; i++) {
final int editorColumn = i;
final TableTextCellEditor editor = editors[i];
// support tabbing between columns while editing:
editor.getText().addTraverseListener(new TraverseListener() {
@Override
public void keyTraversed(TraverseEvent e) {
switch (e.detail) {
case SWT.TRAVERSE_TAB_NEXT:
editColumnOrNextPossible(nextColumn(editorColumn));
e.detail = SWT.TRAVERSE_NONE;
break;
case SWT.TRAVERSE_TAB_PREVIOUS:
editColumnOrPrevPossible(prevColumn(editorColumn));
e.detail = SWT.TRAVERSE_NONE;
break;
default:
break;
}
}
});
TextFieldNavigationHandler.install(editor.getText());
}
editors[NEWNAME_PROP].setActivationListener(new TableTextCellEditor.IActivationListener() {
@Override
public void activate() {
Parameter[] selected = getSelectedElements();
if (selected.length == 1 && fNameContentAssistHandler != null) {
fNameContentAssistHandler.setEnabled(selected[0].isAdded());
}
}
});
fTableViewer.setCellEditors(editors);
fTableViewer.setCellModifier(new ParametersCellModifier());
}
private void addColumnLayoutData(TableLayoutComposite layouter) {
if (fMode.canChangeDefault()) {
layouter.addColumnData(new ColumnWeightData(33, true));
layouter.addColumnData(new ColumnWeightData(33, true));
layouter.addColumnData(new ColumnWeightData(34, true));
} else {
layouter.addColumnData(new ColumnWeightData(50, true));
layouter.addColumnData(new ColumnWeightData(50, true));
}
}
private void addSpacer(Composite parent) {
Label label = new Label(parent, SWT.NONE);
GridData gd = new GridData(GridData.FILL_HORIZONTAL);
gd.heightHint = 5;
label.setLayoutData(gd);
}
private boolean canMove(boolean up) {
int notDeletedInfosCount = getNotDeletedInfosCount();
if (notDeletedInfosCount == 0) {
return false;
}
int[] indc = getTable().getSelectionIndices();
if (indc.length == 0) {
return false;
}
int invalid = up ? 0 : notDeletedInfosCount - 1;
for (int i = 0; i < indc.length; i++) {
if (indc[i] == invalid) {
return false;
}
}
return true;
}
private Button createAddButton(Composite buttonComposite) {
Button button = new Button(buttonComposite, SWT.PUSH);
button.setText(RefactoringMessages.ChangeParametersControl_buttons_add);
button.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
SWTUtil.setButtonDimensionHint(button);
// TODO(scheglov) not used in "Extract Method"
// button.addSelectionListener(new SelectionAdapter() {
// @Override
// public void widgetSelected(SelectionEvent e) {
// String[] excludedParamNames = new String[fParameterInfos.size()];
// for (int i = 0; i < fParameterInfos.size(); i++) {
// ParameterInfo info = fParameterInfos.get(i);
// excludedParamNames[i] = info.getNewName();
// }
// IJavaProject javaProject = fTypeContext.getCuHandle().getJavaProject();
// String newParamName = StubUtility.suggestArgumentName(
// javaProject,
// RefactoringMessages.ChangeParametersControl_new_parameter_default_name,
// excludedParamNames);
// ParameterInfo newInfo = ParameterInfo.createInfoForAddedParameter(
// "Object", newParamName, "null"); //$NON-NLS-1$ //$NON-NLS-2$
// int insertIndex = fParameterInfos.size();
// for (int i = fParameterInfos.size() - 1; i >= 0; i--) {
// ParameterInfo info = fParameterInfos.get(i);
// if (info.isNewVarargs()) {
// insertIndex = i;
// break;
// }
// }
// fParameterInfos.add(insertIndex, newInfo);
// fListener.parameterAdded(newInfo);
// fTableViewer.refresh();
// fTableViewer.getControl().setFocus();
// fTableViewer.setSelection(new StructuredSelection(newInfo), true);
// updateButtonsEnabledState();
// editColumnOrNextPossible(0);
// }
// });
return button;
}
private Button createButton(Composite buttonComposite, String text, final boolean up) {
Button button = new Button(buttonComposite, SWT.PUSH);
button.setText(text);
button.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
SWTUtil.setButtonDimensionHint(button);
button.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
ISelection savedSelection = fTableViewer.getSelection();
if (savedSelection == null) {
return;
}
Parameter[] selection = getSelectedElements();
if (selection.length == 0) {
return;
}
if (up) {
moveUp(selection);
} else {
moveDown(selection);
}
fTableViewer.refresh();
fTableViewer.setSelection(savedSelection);
fListener.parameterListChanged();
fTableViewer.getControl().setFocus();
}
});
return button;
}
// ---- Button bar --------------------------------------------------------------------------------------
private void createButtonComposite(Composite parent) {
Composite buttonComposite = new Composite(parent, SWT.NONE);
buttonComposite.setLayoutData(new GridData(GridData.FILL_VERTICAL));
GridLayout gl = new GridLayout();
gl.marginHeight = 0;
gl.marginWidth = 0;
buttonComposite.setLayout(gl);
if (fMode.canAddParameters()) {
fAddButton = createAddButton(buttonComposite);
}
fEditButton = createEditButton(buttonComposite);
if (fMode.canAddParameters()) {
fRemoveButton = createRemoveButton(buttonComposite);
}
if (buttonComposite.getChildren().length != 0) {
addSpacer(buttonComposite);
}
fUpButton = createButton(
buttonComposite,
RefactoringMessages.ChangeParametersControl_buttons_move_up,
true);
fDownButton = createButton(
buttonComposite,
RefactoringMessages.ChangeParametersControl_buttons_move_down,
false);
updateButtonsEnabledState();
}
private Button createEditButton(Composite buttonComposite) {
Button button = new Button(buttonComposite, SWT.PUSH);
button.setText(RefactoringMessages.ChangeParametersControl_buttons_edit);
button.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
SWTUtil.setButtonDimensionHint(button);
button.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
try {
Parameter[] selected = getSelectedElements();
Assert.isTrue(selected.length == 1);
Parameter parameter = selected[0];
ParameterEditDialog_OLD dialog = new ParameterEditDialog_OLD(
getShell(),
parameter,
fMode.canChangeTypes(),
fMode.canChangeDefault());
dialog.open();
fListener.parameterChanged(parameter);
fTableViewer.update(parameter, PROPERTIES);
} finally {
fTableViewer.getControl().setFocus();
}
}
});
return button;
}
private void createParameterList(Composite parent) {
TableLayoutComposite layouter = new TableLayoutComposite(parent, SWT.NONE);
addColumnLayoutData(layouter);
final Table table = new Table(layouter, SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION);
table.setHeaderVisible(true);
table.setLinesVisible(true);
TableColumn tc;
tc = new TableColumn(table, SWT.NONE, TYPE_PROP);
tc.setResizable(true);
tc.setText(RefactoringMessages.ChangeParametersControl_table_type);
tc = new TableColumn(table, SWT.NONE, NEWNAME_PROP);
tc.setResizable(true);
tc.setText(RefactoringMessages.ChangeParametersControl_table_name);
if (fMode.canChangeDefault()) {
tc = new TableColumn(table, SWT.NONE, DEFAULT_PROP);
tc.setResizable(true);
tc.setText(RefactoringMessages.ChangeParametersControl_table_defaultValue);
}
GridData gd = new GridData(GridData.FILL_BOTH);
gd.heightHint = SWTUtil.getTableHeightHint(table, ROW_COUNT);
gd.widthHint = 40;
layouter.setLayoutData(gd);
fTableViewer = new TableViewer(table);
fTableViewer.setUseHashlookup(true);
fTableViewer.setContentProvider(new ParameterInfoContentProvider());
fTableViewer.setLabelProvider(new ParameterInfoLabelProvider());
fTableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
@Override
public void selectionChanged(SelectionChangedEvent event) {
updateButtonsEnabledState();
}
});
table.addTraverseListener(new TraverseListener() {
@Override
public void keyTraversed(TraverseEvent e) {
if (e.detail == SWT.TRAVERSE_RETURN && e.stateMask == SWT.NONE) {
editColumnOrNextPossible(0);
e.detail = SWT.TRAVERSE_NONE;
}
}
});
table.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.keyCode == SWT.F2 && e.stateMask == SWT.NONE) {
editColumnOrNextPossible(0);
e.doit = false;
}
}
});
addCellEditors();
}
private Button createRemoveButton(Composite buttonComposite) {
final Button button = new Button(buttonComposite, SWT.PUSH);
button.setText(RefactoringMessages.ChangeParametersControl_buttons_remove);
button.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
SWTUtil.setButtonDimensionHint(button);
// TODO(scheglov)
// button.addSelectionListener(new SelectionAdapter() {
// @Override
// public void widgetSelected(SelectionEvent e) {
// int index = getTable().getSelectionIndices()[0];
// ParameterInfo[] selected = getSelectedElements();
// for (int i = 0; i < selected.length; i++) {
// if (selected[i].isAdded()) {
// fParameterInfos.remove(selected[i]);
// } else {
// selected[i].markAsDeleted();
// }
// }
// restoreSelection(index);
// }
//
// private void restoreSelection(int index) {
// fTableViewer.refresh();
// fTableViewer.getControl().setFocus();
// int itemCount = getTableItemCount();
// if (itemCount != 0) {
// if (index >= itemCount) {
// index = itemCount - 1;
// }
// getTable().setSelection(index);
// }
// fListener.parameterListChanged();
// updateButtonsEnabledState();
// }
// });
return button;
}
private void editColumnOrNextPossible(int column) {
Parameter[] selected = getSelectedElements();
if (selected.length != 1) {
return;
}
int nextColumn = column;
do {
fTableViewer.editElement(selected[0], nextColumn);
if (fTableViewer.isCellEditorActive()) {
return;
}
nextColumn = nextColumn(nextColumn);
} while (nextColumn != column);
}
private void editColumnOrPrevPossible(int column) {
Parameter[] selected = getSelectedElements();
if (selected.length != 1) {
return;
}
int prevColumn = column;
do {
fTableViewer.editElement(selected[0], prevColumn);
if (fTableViewer.isCellEditorActive()) {
return;
}
prevColumn = prevColumn(prevColumn);
} while (prevColumn != column);
}
private int getNotDeletedInfosCount() {
if (fParameters == null) {
return 0;
}
int result = 0;
for (Iterator<Parameter> iter = fParameters.iterator(); iter.hasNext();) {
Parameter parameter = iter.next();
if (!parameter.isDeleted()) {
result++;
}
}
return result;
}
private Parameter[] getSelectedElements() {
ISelection selection = fTableViewer.getSelection();
if (selection == null) {
return new Parameter[0];
}
if (!(selection instanceof IStructuredSelection)) {
return new Parameter[0];
}
List<?> selected = ((IStructuredSelection) selection).toList();
return selected.toArray(new Parameter[selected.size()]);
}
private Table getTable() {
return fTableViewer.getTable();
}
// private int getTableItemCount() {
// return getTable().getItemCount();
// }
//---- editing -----------------------------------------------------------------------------------------------
private int getTableSelectionCount() {
return getTable().getSelectionCount();
}
private SubjectControlContentAssistant installParameterNameContentAssist(Text text) {
VariableNamesProcessor processor = new VariableNamesProcessor(fParamNameProposals);
SubjectControlContentAssistant contentAssistant = ControlContentAssistHelper.createJavaContentAssistant(processor);
fNameContentAssistHandler = ContentAssistHandler.createHandlerForText(text, contentAssistant);
return contentAssistant;
}
// TODO(scheglov)
// private SubjectControlContentAssistant installParameterTypeContentAssist(Text text) {
// DartTypeCompletionProcessor processor = new DartTypeCompletionProcessor(true, false);
// if (fTypeContext == null) {
// processor.setCompletionContext(null, null, null);
// } else {
// processor.setCompletionContext(
// fTypeContext.getCuHandle(),
// fTypeContext.getBeforeString(),
// fTypeContext.getAfterString());
// }
// SubjectControlContentAssistant contentAssistant = ControlContentAssistHelper.createJavaContentAssistant(processor);
// ContentAssistHandler.createHandlerForText(text, contentAssistant);
// return contentAssistant;
// }
//---- change order ----------------------------------------------------------------------------------------
private void moveDown(Parameter[] selection) {
Collections.reverse(fParameters);
moveUp(fParameters, Arrays.asList(selection));
Collections.reverse(fParameters);
}
private void moveUp(Parameter[] selection) {
moveUp(fParameters, Arrays.asList(selection));
}
private int nextColumn(int column) {
return (column >= getTable().getColumnCount() - 1) ? 0 : column + 1;
}
private int prevColumn(int column) {
return (column <= 0) ? getTable().getColumnCount() - 1 : column - 1;
}
private void updateButtonsEnabledState() {
fUpButton.setEnabled(canMove(true));
fDownButton.setEnabled(canMove(false));
if (fEditButton != null) {
fEditButton.setEnabled(getTableSelectionCount() == 1);
}
if (fAddButton != null) {
fAddButton.setEnabled(true);
}
if (fRemoveButton != null) {
fRemoveButton.setEnabled(getTableSelectionCount() != 0);
}
}
}