/*******************************************************************************
* Copyright (c) 2000, 2011 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
* Les Jones <lesojones@gmail.com> - bug 190717
*
* Source:
* https://github.com/eclipse/eclipse.pde.ui/blob/master/ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/parts/SharedPartWithButtons.java
*******************************************************************************/
package com.dubture.composer.ui.parts;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.layout.PixelConverter;
import org.eclipse.jface.resource.JFaceResources;
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.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.forms.widgets.FormToolkit;
public abstract class SharedPartWithButtons extends SharedPart {
private String[] fButtonLabels;
private Button[] fButtons;
protected Composite fButtonContainer;
private class SelectionHandler implements SelectionListener {
public void widgetSelected(SelectionEvent e) {
buttonSelected(e);
}
public void widgetDefaultSelected(SelectionEvent e) {
buttonSelected(e);
}
private void buttonSelected(SelectionEvent e) {
Integer index = (Integer) e.widget.getData();
SharedPartWithButtons.this.buttonSelected((Button) e.widget, index.intValue());
}
}
public SharedPartWithButtons(String[] buttonLabels) {
fButtonLabels = buttonLabels;
}
public void setButtonEnabled(int index, boolean enabled) {
if (fButtons != null && index >= 0 && fButtons.length > index) {
fButtons[index].setEnabled(enabled);
}
}
/**
* Set the specified button's visibility.
* Fix for defect 190717.
* @param index The index of the button to be changed
* @param visible true if the button is to be shown, false if hidden
*/
public void setButtonVisible(int index, boolean visible) {
if (fButtons != null && index >= 0 && fButtons.length > index) {
fButtons[index].setVisible(visible);
}
}
protected abstract void createMainControl(Composite parent, int style, int span, FormToolkit toolkit);
protected abstract void buttonSelected(Button button, int index);
/*
* @see SharedPart#createControl(Composite, FormWidgetFactory)
*/
public void createControl(Composite parent, int style, int span, FormToolkit toolkit) {
createMainLabel(parent, span, toolkit);
createMainControl(parent, style, span - 1, toolkit);
createButtons(parent, toolkit);
}
protected void createButtons(Composite parent, FormToolkit toolkit) {
if (fButtonLabels != null && fButtonLabels.length > 0) {
fButtonContainer = createComposite(parent, toolkit);
GridData gd = new GridData(GridData.FILL_VERTICAL);
fButtonContainer.setLayoutData(gd);
fButtonContainer.setLayout(createButtonsLayout());
fButtons = new Button[fButtonLabels.length];
SelectionHandler listener = new SelectionHandler();
for (int i = 0; i < fButtonLabels.length; i++) {
String label = fButtonLabels[i];
if (label != null) {
Button button = createButton(fButtonContainer, label, i, toolkit);
button.addSelectionListener(listener);
fButtons[i] = button;
} else {
createEmptySpace(fButtonContainer, 1, toolkit);
}
}
}
}
protected GridLayout createButtonsLayout() {
GridLayout layout = new GridLayout();
layout.marginWidth = layout.marginHeight = 0;
return layout;
}
protected Button createButton(Composite parent, String label, int index, FormToolkit toolkit) {
Button button;
if (toolkit != null)
button = toolkit.createButton(parent, label, SWT.PUSH);
else {
button = new Button(parent, SWT.PUSH);
button.setText(label);
}
GridData gd = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_BEGINNING);
button.setLayoutData(gd);
button.setData(new Integer(index));
// Set the default button size
button.setFont(JFaceResources.getDialogFont());
PixelConverter converter = new PixelConverter(button);
int widthHint = converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
gd.widthHint = Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
return button;
}
protected void updateEnabledState() {
for (int i = 0; i < fButtons.length; i++) {
fButtons[i].setEnabled(isEnabled());
}
}
protected void createMainLabel(Composite parent, int span, FormToolkit toolkit) {
}
public Button getButton(int index) {
//
if ((fButtons == null) || (index < 0) || (index >= fButtons.length)) {
return null;
}
//
return fButtons[index];
}
}