/*******************************************************************************
* Copyright (c) 2000, 2005 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.erlide.ui.dialogfields;
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;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
/**
* Dialog field containing a label, text control and a button control.
*/
public class StringButtonDialogField extends StringDialogField {
private Button fBrowseButton;
private String fBrowseButtonLabel;
private final IStringButtonAdapter fStringButtonAdapter;
private boolean fButtonEnabled;
public StringButtonDialogField(final IStringButtonAdapter adapter) {
super();
fStringButtonAdapter = adapter;
fBrowseButtonLabel = "!Browse...!"; //$NON-NLS-1$
fButtonEnabled = true;
}
/**
* Sets the label of the button.
*/
public void setButtonLabel(final String label) {
fBrowseButtonLabel = label;
}
// ------ adapter communication
/**
* Programmatical pressing of the button
*/
public void changeControlPressed() {
fStringButtonAdapter.changeControlPressed(this);
}
// ------- layout helpers
/*
* @see DialogField#doFillIntoGrid
*/
@Override
public Control[] doFillIntoGrid(final Composite parent, final int nColumns) {
assertEnoughColumns(nColumns);
final Label label = getLabelControl(parent);
label.setLayoutData(gridDataForLabel(1));
final Text text = getTextControl(parent);
text.setLayoutData(gridDataForText(nColumns - 2));
final Button button = getChangeControl(parent);
button.setLayoutData(gridDataForButton(button, 1));
return new Control[] { label, text, button };
}
/*
* @see DialogField#getNumberOfControls
*/
@Override
public int getNumberOfControls() {
return 3;
}
protected static GridData gridDataForButton(final Button button, final int span) {
final GridData gd = new GridData();
gd.horizontalAlignment = GridData.FILL;
gd.grabExcessHorizontalSpace = false;
gd.horizontalSpan = span;
// gd.widthHint = SWTUtil.getButtonWidthHint(button);
return gd;
}
// ------- ui creation
/**
* Creates or returns the created buttom widget.
*
* @param parent
* The parent composite or <code>null</code> if the widget has
* already been created.
*/
public Button getChangeControl(final Composite parent) {
if (fBrowseButton == null) {
assertCompositeNotNull(parent);
fBrowseButton = new Button(parent, SWT.PUSH);
fBrowseButton.setFont(parent.getFont());
fBrowseButton.setText(fBrowseButtonLabel);
fBrowseButton.setEnabled(isEnabled() && fButtonEnabled);
fBrowseButton.addSelectionListener(new SelectionListener() {
@Override
public void widgetDefaultSelected(final SelectionEvent e) {
changeControlPressed();
}
@Override
public void widgetSelected(final SelectionEvent e) {
changeControlPressed();
}
});
}
return fBrowseButton;
}
// ------ enable / disable management
/**
* Sets the enable state of the button.
*/
public void enableButton(final boolean enable) {
if (isOkToUse(fBrowseButton)) {
fBrowseButton.setEnabled(isEnabled() && enable);
}
fButtonEnabled = enable;
}
/*
* @see DialogField#updateEnableState
*/
@Override
protected void updateEnableState() {
super.updateEnableState();
if (isOkToUse(fBrowseButton)) {
fBrowseButton.setEnabled(isEnabled() && fButtonEnabled);
}
}
}