Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils / src / org / simantics / utils / format / ValueFormat.java

diff --git a/bundles/org.simantics.utils/src/org/simantics/utils/format/ValueFormat.java b/bundles/org.simantics.utils/src/org/simantics/utils/format/ValueFormat.java
new file mode 100644 (file)
index 0000000..05dba81
--- /dev/null
+++ b/bundles/org.simantics.utils/src/org/simantics/utils/format/ValueFormat.java
@@ -0,0 +1,78 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
+ * Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.utils.format;\r
+\r
+import java.text.DecimalFormat;\r
+import java.text.DecimalFormatSymbols;\r
+import java.text.Format;\r
+import java.text.NumberFormat;\r
+import java.util.Locale;\r
+\r
+\r
+/**\r
+ * \r
+ * @author toni.kalajainen\r
+ */\r
+public enum ValueFormat {\r
+       \r
+       Currency ( new DecimalFormat("#,##0.#######;-#,##0.#####", Impl.SYMBOLS) ),\r
+       Scientific( new DecimalFormat("0.###E0", Impl.SYMBOLS) ),\r
+       Engineering( new DecimalFormat("##0.###E0", Impl.SYMBOLS) ),\r
+       Default ( new SwitchFormat(1e-5, 1e5, Scientific.format, Currency.format, Scientific.format) );\r
+\r
+       public final NumberFormat format;\r
+       ValueFormat(NumberFormat format) { this.format = format; };\r
+       \r
+       public Format toFormat( int noOfDecimals ) \r
+       {\r
+               switch ( this ) {\r
+                       case Currency: return noOfDecimals>decimalFormats.length||noOfDecimals<0 ? decimalFormats[decimalFormats.length-1] : decimalFormats[noOfDecimals]; \r
+                       case Scientific: return format;\r
+                       case Engineering: return format;\r
+                       case Default: return noOfDecimals>defaultFormats.length||noOfDecimals<0 ? defaultFormats[defaultFormats.length-1] : defaultFormats[noOfDecimals];\r
+                       default: return format;\r
+               }\r
+       }\r
+       \r
+       public static void main(String[] args) {\r
+               double value = 1234567.8901234567890123456;\r
+               for (int i=0; i<10; i++) {\r
+                       System.out.println("value="+value+", decimalformat["+i+"]="+decimalFormats[i].format(value));\r
+               }\r
+               value = 567.8901234567890123456;\r
+               for (int i=0; i<10; i++) {\r
+                       System.out.println("value="+value+", decimalformat["+i+"]="+decimalFormats[i].format(value));\r
+               }\r
+       }\r
+       \r
+       private static DecimalFormat decimalFormats[] = new DecimalFormat[17];\r
+       private static Format defaultFormats[] = new Format[17];\r
+       \r
+       static {\r
+               String decimals = "";\r
+               for ( int i=0; i<decimalFormats.length; i++ ) {\r
+                       decimalFormats[i] = new DecimalFormat("#,###"+decimals+";-#,###"+decimals, Impl.SYMBOLS);\r
+                       defaultFormats[i] = new SwitchFormat(1e-5, 1e5, Scientific.format, decimalFormats[i], Scientific.format);\r
+                       if ( i==0 ) decimals += ".";\r
+                       decimals += "#";\r
+               }\r
+       }\r
+\r
+       private static class Impl {\r
+               private static final DecimalFormatSymbols SYMBOLS;\r
+               static {\r
+                       SYMBOLS = DecimalFormatSymbols.getInstance(Locale.US);\r
+                       SYMBOLS.setGroupingSeparator(' ');\r
+               }\r
+       }\r
+\r
+}\r