Parse floating point values using current default locale

Fixes #55 : Locales that use a decimal separator other than dot "."
would throw NumberFormatException when parsing the content of the Estimated
field.

Detected three other places in the code that would also parse
potentially locale-formatted strings with the universal .valueOf()
parsing methods that expect dots.

Changed them to use an instance of NumberFormat instead.

net.sf.redmine_mylyn.ui/src/net/sf/redmine_mylyn/internal/ui/editor/EstimatedEditor.java

@@ -1,5 +1,8 @@
 package net.sf.redmine_mylyn.internal.ui.editor;
 
+import java.text.NumberFormat;
+import java.text.ParseException;
+
 import net.sf.redmine_mylyn.core.RedmineCorePlugin;
 import net.sf.redmine_mylyn.internal.ui.Images;
 import net.sf.redmine_mylyn.internal.ui.Messages;
@@ -120,9 +123,20 @@ private int getValue() {
 
 	private void setValue(String val) {
 		if(!val.equals(getTaskAttribute().getValue())) {
-			if(Float.valueOf(val) == 0) {
+
+			NumberFormat nf = NumberFormat.getInstance();
+			float value = 0;
+
+			try {
+				value = nf.parse(val).floatValue();
+			} catch (ParseException parsex) {
+				// do nothing
+			}
+
+			if(value == 0) {
 				val = "";
 			}
+
 			getTaskAttribute().setValue(val);
 			attributeChanged();
 		}

net.sf.redmine_mylyn.ui/src/net/sf/redmine_mylyn/internal/ui/editor/TaskDataValidator.java

@@ -1,5 +1,7 @@
 package net.sf.redmine_mylyn.internal.ui.editor;
 
+import java.text.NumberFormat;
+import java.text.ParseException;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.regex.Pattern;
@@ -78,8 +80,9 @@ protected void validateEstimatedHours(TaskData taskData, ErrorMessageCollector c
 		if (attribute != null) {
 			if (!attribute.getValue().trim().isEmpty()) {
 				try {
-					Double.valueOf(attribute.getValue().trim());
-				} catch (NumberFormatException e) {
+					NumberFormat nf = NumberFormat.getInstance();
+					nf.parse(attribute.getValue().trim()).doubleValue();
+				} catch (ParseException e) {
 					collector.add(attribute, RedmineAttribute.ESTIMATED.getLabel() + Messages.ERRMSG_FLOAT);
 				}
 			}
@@ -91,8 +94,9 @@ protected void validateTimeEntry(TaskData taskData, ErrorMessageCollector collec
 		if (attribute != null) {
 			if (!attribute.getValue().trim().isEmpty()) {
 				try {
-					Double.valueOf(attribute.getValue().trim());
-				} catch (NumberFormatException e) {
+					NumberFormat nf = NumberFormat.getInstance();
+					nf.parse(attribute.getValue().trim());
+				} catch (ParseException e) {
 					collector.add(attribute, RedmineAttribute.TIME_ENTRY_HOURS.getLabel() + Messages.ERRMSG_FLOAT);
 				}
 
@@ -169,13 +173,18 @@ protected void validateCustomAttribute(TaskAttribute taskAttribute, CustomField
 	protected boolean validateCustomAttributeType(String value, CustomField customField) {
 		try {
 			switch (customField.getFieldFormat()) {
-			case FLOAT: Double.valueOf(value); break;
+			case FLOAT: 
+				NumberFormat nf = NumberFormat.getInstance();
+				nf.parse(value);
 			case INT: Integer.valueOf(value); break;
 			default: return true;
 			}
 		} catch (NumberFormatException e) {
 			return false;
+		} catch (ParseException e) {
+			return false;
 		}
+
 		return true;
 	}