altosuilib: Build some common classes for displaying values in flight window

Right now, all of the flight displays have piles of custom code for
displaying values. These new widgets should be able to replace most of
that.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/altosuilib/AltosUIUnitsIndicator.java b/altosuilib/AltosUIUnitsIndicator.java
new file mode 100644
index 00000000..433cc0c2
--- /dev/null
+++ b/altosuilib/AltosUIUnitsIndicator.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright © 2014 Keith Packard <keithp@keithp.com>
+ *
+ * This program 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; version 2 of the License.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.altosuilib_2;
+
+import java.awt.*;
+import javax.swing.*;
+import org.altusmetrum.altoslib_4.*;
+
+public abstract class AltosUIUnitsIndicator extends AltosUIIndicator {
+
+	AltosUnits	units;
+
+	abstract public double value(AltosState state, int i);
+	public boolean good(double value) { return false; }
+
+	public double[] last_values;
+
+	public void show(double... v) {
+		for (int i = 0; i < values.length; i++) {
+			if (v[i] != last_values[i]) {
+				String	value_text;
+				boolean	good = false;
+
+				if (v[i] == AltosLib.MISSING) {
+					value_text = "Missing";
+				} else {
+					value_text = units.show(8, v[i]);
+					if (i == 0)
+						good = good(v[i]);
+				}
+				last_values[i] = v[i];
+				if (i == 0 && lights != null)
+					set_lights(good);
+				values[i].setText(value_text);
+			}
+		}
+	}
+
+	public void units_changed(boolean imperial_units) {
+		show(last_values);
+	}
+
+	public void show (AltosState state, AltosListenerState listener_state) {
+
+		double[] v = new double[values.length];
+
+		for (int i = 0; i < values.length; i++) {
+			if (state != null)
+				v[i] = value(state, i);
+			else
+				v[i] = AltosLib.MISSING;
+		}
+		show(v);
+
+	}
+
+	public AltosUIUnitsIndicator (Container container, int y, AltosUnits units, String name, int number_values, boolean has_lights, int width) {
+		super(container, y, name, number_values, has_lights, width);
+		this.units = units;
+		last_values = new double[values.length];
+		for (int i = 0; i < last_values.length; i++)
+			last_values[i] = AltosLib.MISSING - 1;
+	}
+}