ProgressBarTab.java

/*******************************************************************************
 * Copyright (c) 2000, 2007 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.swt.examples.controlexample;

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Widget;

class ProgressBarTab extends RangeTab {
	Button		indeterminateButton;
	/* Example widgets and groups that contain them */
	ProgressBar	progressBar1;

	Group		progressBarGroup;
	/* Style widgets added to the "Style" group */
	Button		smoothButton;

	/**
	 * Creates the Tab within a given instance of ControlExample.
	 */
	ProgressBarTab(ControlExample instance) {
		super(instance);
	}

	/**
	 * Gets the short text for the tab folder item.
	 */
	public String getShortTabText() {
		return "PB";
	}

	/**
	 * Creates the "Example" group.
	 */
	void createExampleGroup() {
		super.createExampleGroup();

		/* Create a group for the progress bar */
		progressBarGroup = new Group(exampleGroup, SWT.NONE);
		progressBarGroup.setLayout(new GridLayout());
		progressBarGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
		progressBarGroup.setText("ProgressBar");
	}

	/**
	 * Creates the "Example" widgets.
	 */
	void createExampleWidgets() {

		/* Compute the widget style */
		int style = getDefaultStyle();
		if (horizontalButton.getSelection())
			style |= SWT.HORIZONTAL;
		if (verticalButton.getSelection())
			style |= SWT.VERTICAL;
		if (smoothButton.getSelection())
			style |= SWT.SMOOTH;
		if (borderButton.getSelection())
			style |= SWT.BORDER;
		if (indeterminateButton.getSelection())
			style |= SWT.INDETERMINATE;

		/* Create the example widgets */
		progressBar1 = new ProgressBar(progressBarGroup, style);
	}

	/**
	 * Creates the "Style" group.
	 */
	void createStyleGroup() {
		super.createStyleGroup();

		/* Create the extra widgets */
		smoothButton = new Button(styleGroup, SWT.CHECK);
		smoothButton.setText("SWT.SMOOTH");
		indeterminateButton = new Button(styleGroup, SWT.CHECK);
		indeterminateButton.setText("SWT.INDETERMINATE");
	}

	/**
	 * Gets the default maximum of the "Example" widgets.
	 */
	int getDefaultMaximum() {
		return progressBar1.getMaximum();
	}

	/**
	 * Gets the default minimim of the "Example" widgets.
	 */
	int getDefaultMinimum() {
		return progressBar1.getMinimum();
	}

	/**
	 * Gets the default selection of the "Example" widgets.
	 */
	int getDefaultSelection() {
		return progressBar1.getSelection();
	}

	/**
	 * Gets the "Example" widget children.
	 */
	Widget[] getExampleWidgets() {
		return new Widget[] { progressBar1 };
	}

	/**
	 * Returns a list of set/get API method names (without the set/get prefix) that can be used to set/get values in the
	 * example control(s).
	 */
	String[] getMethodNames() {
		return new String[] { "Selection", "ToolTipText" };
	}

	/**
	 * Gets the text for the tab folder item.
	 */
	String getTabText() {
		return "ProgressBar";
	}

	/**
	 * Sets the state of the "Example" widgets.
	 */
	void setExampleWidgetState() {
		super.setExampleWidgetState();
		if (indeterminateButton.getSelection()) {
			selectionSpinner.setEnabled(false);
			minimumSpinner.setEnabled(false);
			maximumSpinner.setEnabled(false);
		} else {
			selectionSpinner.setEnabled(true);
			minimumSpinner.setEnabled(true);
			maximumSpinner.setEnabled(true);
		}
		smoothButton.setSelection((progressBar1.getStyle() & SWT.SMOOTH) != 0);
		indeterminateButton.setSelection((progressBar1.getStyle() & SWT.INDETERMINATE) != 0);
	}

	/**
	 * Sets the maximum of the "Example" widgets.
	 */
	void setWidgetMaximum() {
		progressBar1.setMaximum(maximumSpinner.getSelection());
		updateSpinners();
	}

	/**
	 * Sets the minimim of the "Example" widgets.
	 */
	void setWidgetMinimum() {
		progressBar1.setMinimum(minimumSpinner.getSelection());
		updateSpinners();
	}

	/**
	 * Sets the selection of the "Example" widgets.
	 */
	void setWidgetSelection() {
		progressBar1.setSelection(selectionSpinner.getSelection());
		updateSpinners();
	}

	/**
	 * Update the Spinner widgets to reflect the actual value set on the "Example" widget.
	 */
	void updateSpinners() {
		minimumSpinner.setSelection(progressBar1.getMinimum());
		selectionSpinner.setSelection(progressBar1.getSelection());
		maximumSpinner.setSelection(progressBar1.getMaximum());
	}
}