unitstab.java

The ElectricTM VLSI Design System is an open-source Electronic Design Automation (EDA) system that c

/* -*- tab-width: 4 -*-
 *
 * Electric(tm) VLSI Design System
 *
 * File: UnitsTab.java
 *
 * Copyright (c) 2004 Sun Microsystems and Static Free Software
 *
 * Electric(tm) is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * Electric(tm) is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Electric(tm); see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, Mass 02111-1307, USA.
 */
package com.sun.electric.tool.user.dialogs.options;

import com.sun.electric.database.text.TextUtils;
import com.sun.electric.tool.user.User;

import javax.swing.JPanel;

/**
 * Class to handle the "Units" tab of the Preferences dialog.
 */
public class UnitsTab extends PreferencePanel
{
	/** Creates new form Units Options */
	public UnitsTab(java.awt.Frame parent, boolean modal)
	{
		super(parent, modal);
		initComponents();
	}

	/** return the panel to use for this preferences tab. */
	public JPanel getPanel() { return units; }

	/** return the name of this preferences tab. */
	public String getName() { return "Units"; }

	private static final int DISTANCE_OFFSET = TextUtils.UnitScale.MILLI.getIndex();
	private static final int RESISTANCE_OFFSET = TextUtils.UnitScale.GIGA.getIndex();
	private static final int CAPACITANCE_OFFSET = TextUtils.UnitScale.NONE.getIndex();
	private static final int INDUCTANCE_OFFSET = TextUtils.UnitScale.NONE.getIndex();
	private static final int CURRENT_OFFSET = TextUtils.UnitScale.NONE.getIndex();
	private static final int VOLTAGE_OFFSET = TextUtils.UnitScale.KILO.getIndex();
	private static final int TIME_OFFSET = TextUtils.UnitScale.NONE.getIndex();

	private TextUtils.UnitScale initialUnitsDistance;
	private TextUtils.UnitScale initialUnitsResistance;
	private TextUtils.UnitScale initialUnitsCapacitance;
	private TextUtils.UnitScale initialUnitsInductance;
	private TextUtils.UnitScale initialUnitsAmperage;
	private TextUtils.UnitScale initialUnitsVoltage;
	private TextUtils.UnitScale initialUnitsTime;

	/**
	 * Method called at the start of the dialog.
	 * Caches current values and displays them in the Units tab.
	 */
	public void init()
	{
		unitsDistance.addItem("Millimeters");
		unitsDistance.addItem("Microns");
		unitsDistance.addItem("Nanometers");
		initialUnitsDistance = User.getDistanceUnits();
		int index = initialUnitsDistance.getIndex() - DISTANCE_OFFSET;
		if (index < 0) index = 0;
		if (index >= unitsDistance.getItemCount()) index = unitsDistance.getItemCount() - 1;
		unitsDistance.setSelectedIndex(index);

		unitsResistance.addItem("Giga-ohms");
		unitsResistance.addItem("Mega-ohms");
		unitsResistance.addItem("Kilo-ohms");
		unitsResistance.addItem("Ohms");
		initialUnitsResistance = User.getResistanceUnits();
		index = initialUnitsResistance.getIndex() - RESISTANCE_OFFSET;
		if (index < 0) index = 0;
		if (index >= unitsDistance.getItemCount()) index = unitsDistance.getItemCount() - 1;
		unitsResistance.setSelectedIndex(index);

		unitsCapacitance.addItem("Farads");
		unitsCapacitance.addItem("Milli-farads");
		unitsCapacitance.addItem("Micro-farads");
		unitsCapacitance.addItem("Nano-farads");
		unitsCapacitance.addItem("Pico-farads");
		unitsCapacitance.addItem("Femto-farads");
		initialUnitsCapacitance = User.getCapacitanceUnits();
		index = initialUnitsCapacitance.getIndex() - CAPACITANCE_OFFSET;
		if (index < 0) index = 0;
		if (index >= unitsDistance.getItemCount()) index = unitsDistance.getItemCount() - 1;
		unitsCapacitance.setSelectedIndex(index);

		unitsInductance.addItem("Henrys");
		unitsInductance.addItem("Milli-henrys");
		unitsInductance.addItem("Micro-henrys");
		unitsInductance.addItem("Nano-henrys");
		initialUnitsInductance = User.getInductanceUnits();
		index = initialUnitsInductance.getIndex() - INDUCTANCE_OFFSET;
		if (index < 0) index = 0;
		if (index >= unitsDistance.getItemCount()) index = unitsDistance.getItemCount() - 1;
		unitsInductance.setSelectedIndex(index);

		unitsCurrent.addItem("Amps");
		unitsCurrent.addItem("Milli-amps");
		unitsCurrent.addItem("Micro-amps");
		initialUnitsAmperage = User.getAmperageUnits();
		index = initialUnitsAmperage.getIndex() - CURRENT_OFFSET;
		if (index < 0) index = 0;
		if (index >= unitsDistance.getItemCount()) index = unitsDistance.getItemCount() - 1;
		unitsCurrent.setSelectedIndex(index);

		unitsVoltage.addItem("Kilo-volts");
		unitsVoltage.addItem("Volts");
		unitsVoltage.addItem("Milli-volts");
		unitsVoltage.addItem("Micro-volts");
		initialUnitsVoltage = User.getVoltageUnits();
		index = initialUnitsVoltage.getIndex() - VOLTAGE_OFFSET;
		if (index < 0) index = 0;
		if (index >= unitsDistance.getItemCount()) index = unitsDistance.getItemCount() - 1;
		unitsVoltage.setSelectedIndex(index);

		unitsTime.addItem("Seconds");
		unitsTime.addItem("Milli-seconds");
		unitsTime.addItem("Micro-seconds");
		unitsTime.addItem("Nano-seconds");
		unitsTime.addItem("Pico-seconds");
		unitsTime.addItem("Femto-seconds");
		initialUnitsTime = User.getTimeUnits();
		index = initialUnitsTime.getIndex() - TIME_OFFSET;
		if (index < 0) index = 0;
		if (index >= unitsDistance.getItemCount()) index = unitsDistance.getItemCount() - 1;
		unitsTime.setSelectedIndex(index);

		// Units no longer mean anything - all numbers are in real units, and are
		// displayed scaled with appropriate post-fix.
		index = TextUtils.UnitScale.NONE.getIndex();
		unitsResistance.setSelectedIndex(-1);
		unitsResistance.setEnabled(false);
		unitsCapacitance.setSelectedIndex(-1);
		unitsCapacitance.setEnabled(false);
		unitsInductance.setSelectedIndex(-1);
		unitsInductance.setEnabled(false);
		unitsCurrent.setSelectedIndex(-1);
		unitsCurrent.setEnabled(false);
		unitsVoltage.setSelectedIndex(-1);
		unitsVoltage.setEnabled(false);
		unitsTime.setSelectedIndex(-1);
		unitsTime.setEnabled(false);
	}

	/**
	 * Method called when the "OK" panel is hit.
	 * Updates any changed fields in the Units tab.
	 */
	public void term()
	{
		TextUtils.UnitScale currentDistance = TextUtils.UnitScale.findFromIndex(unitsDistance.getSelectedIndex() + DISTANCE_OFFSET);
		if (currentDistance != initialUnitsDistance)
			User.setDistanceUnits(currentDistance);

		TextUtils.UnitScale currentResistance = TextUtils.UnitScale.findFromIndex(unitsResistance.getSelectedIndex() + RESISTANCE_OFFSET);
		if (currentResistance != initialUnitsResistance)
			User.setResistanceUnits(currentResistance);

		TextUtils.UnitScale currentCapacitance = TextUtils.UnitScale.findFromIndex(unitsCapacitance.getSelectedIndex() + CAPACITANCE_OFFSET);
		if (currentCapacitance != initialUnitsCapacitance)
			User.setCapacitanceUnits(currentCapacitance);

		TextUtils.UnitScale currentInductance = TextUtils.UnitScale.findFromIndex(unitsInductance.getSelectedIndex() + INDUCTANCE_OFFSET);
		if (currentInductance != initialUnitsInductance)
			User.setInductanceUnits(currentInductance);

		TextUtils.UnitScale currentAmperage = TextUtils.UnitScale.findFromIndex(unitsCurrent.getSelectedIndex() + CURRENT_OFFSET);
		if (currentAmperage != initialUnitsAmperage)
			User.setAmperageUnits(currentAmperage);

		TextUtils.UnitScale currentVoltage = TextUtils.UnitScale.findFromIndex(unitsVoltage.getSelectedIndex() + VOLTAGE_OFFSET);
		if (currentVoltage != initialUnitsVoltage)
			User.setVoltageUnits(currentVoltage);

		TextUtils.UnitScale currentTime = TextUtils.UnitScale.findFromIndex(unitsTime.getSelectedIndex() + TIME_OFFSET);
		if (currentTime != initialUnitsTime)
			User.setTimeUnits(currentTime);
	}

	/**
	 * Method called when the factory reset is requested.
	 */
	public void reset()
	{
		if (!User.getFactoryDistanceUnits().equals(User.getDistanceUnits()))