--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.wizards.dialogfields;
+
+import net.sourceforge.phpdt.internal.ui.util.SWTUtil;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+
+/**
+ * Dialog Field containing a single button such as a radio or checkbox button.
+ */
+public class SelectionButtonDialogField extends DialogField {
+
+ private Button fButton;
+
+ private boolean fIsSelected;
+
+ private DialogField[] fAttachedDialogFields;
+
+ private int fButtonStyle;
+
+ /**
+ * Creates a selection button. Allowed button styles: SWT.RADIO, SWT.CHECK,
+ * SWT.TOGGLE, SWT.PUSH
+ */
+ public SelectionButtonDialogField(int buttonStyle) {
+ super();
+ fIsSelected = false;
+ fAttachedDialogFields = null;
+ fButtonStyle = buttonStyle;
+ }
+
+ /**
+ * Attaches a field to the selection state of the selection button. The
+ * attached field will be disabled if the selection button is not selected.
+ */
+ public void attachDialogField(DialogField dialogField) {
+ attachDialogFields(new DialogField[] { dialogField });
+ }
+
+ /**
+ * Attaches fields to the selection state of the selection button. The
+ * attached fields will be disabled if the selection button is not selected.
+ */
+ public void attachDialogFields(DialogField[] dialogFields) {
+ fAttachedDialogFields = dialogFields;
+ for (int i = 0; i < dialogFields.length; i++) {
+ dialogFields[i].setEnabled(fIsSelected);
+ }
+ }
+
+ /**
+ * Returns <code>true</code> is teh gived field is attached to the
+ * selection button.
+ */
+ public boolean isAttached(DialogField editor) {
+ if (fAttachedDialogFields != null) {
+ for (int i = 0; i < fAttachedDialogFields.length; i++) {
+ if (fAttachedDialogFields[i] == editor) {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ // ------- layout helpers
+
+ /*
+ * @see DialogField#doFillIntoGrid
+ */
+ public Control[] doFillIntoGrid(Composite parent, int nColumns) {
+ assertEnoughColumns(nColumns);
+
+ Button button = getSelectionButton(parent);
+ GridData gd = new GridData();
+ gd.horizontalSpan = nColumns;
+ gd.horizontalAlignment = GridData.FILL;
+ if (fButtonStyle == SWT.PUSH) {
+ gd.heightHint = SWTUtil.getButtonHeightHint(button);
+ gd.widthHint = SWTUtil.getButtonWidthHint(button);
+ }
+
+ button.setLayoutData(gd);
+
+ return new Control[] { button };
+ }
+
+ /*
+ * @see DialogField#getNumberOfControls
+ */
+ public int getNumberOfControls() {
+ return 1;
+ }
+
+ // ------- ui creation
+
+ /**
+ * Returns the selection button widget. When called the first time, the
+ * widget will be created.
+ *
+ * @param The
+ * parent composite when called the first time, or
+ * <code>null</code> after.
+ */
+ public Button getSelectionButton(Composite group) {
+ if (fButton == null) {
+ assertCompositeNotNull(group);
+
+ fButton = new Button(group, fButtonStyle);
+ fButton.setFont(group.getFont());
+ fButton.setText(fLabelText);
+ fButton.setEnabled(isEnabled());
+ fButton.setSelection(fIsSelected);
+ fButton.addSelectionListener(new SelectionListener() {
+ public void widgetDefaultSelected(SelectionEvent e) {
+ doWidgetSelected(e);
+ }
+
+ public void widgetSelected(SelectionEvent e) {
+ doWidgetSelected(e);
+ }
+ });
+ }
+ return fButton;
+ }
+
+ private void doWidgetSelected(SelectionEvent e) {
+ if (isOkToUse(fButton)) {
+ changeValue(fButton.getSelection());
+ }
+ }
+
+ private void changeValue(boolean newState) {
+ if (fIsSelected != newState) {
+ fIsSelected = newState;
+ if (fAttachedDialogFields != null) {
+ boolean focusSet = false;
+ for (int i = 0; i < fAttachedDialogFields.length; i++) {
+ fAttachedDialogFields[i].setEnabled(fIsSelected);
+ if (fIsSelected && !focusSet) {
+ focusSet = fAttachedDialogFields[i].setFocus();
+ }
+ }
+ }
+ dialogFieldChanged();
+ } else if (fButtonStyle == SWT.PUSH) {
+ dialogFieldChanged();
+ }
+ }
+
+ // ------ model access
+
+ /**
+ * Returns the selection state of the button.
+ */
+ public boolean isSelected() {
+ return fIsSelected;
+ }
+
+ /**
+ * Sets the selection state of the button.
+ */
+ public void setSelection(boolean selected) {
+ changeValue(selected);
+ if (isOkToUse(fButton)) {
+ fButton.setSelection(selected);
+ }
+ }
+
+ // ------ enable / disable management
+
+ /*
+ * @see DialogField#updateEnableState
+ */
+ protected void updateEnableState() {
+ super.updateEnableState();
+ if (isOkToUse(fButton)) {
+ fButton.setEnabled(isEnabled());
+ }
+ }
+
+}
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