| // Copyright 2005 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry.form.validator; |
| |
| import org.apache.tapestry.IMarkupWriter; |
| import org.apache.tapestry.IRequestCycle; |
| import org.apache.tapestry.form.FormComponentContributorContext; |
| import org.apache.tapestry.form.IFormComponent; |
| import org.apache.tapestry.form.ValidationMessages; |
| import org.apache.tapestry.form.translator.NumberTranslator; |
| import org.apache.tapestry.json.JSONLiteral; |
| import org.apache.tapestry.json.JSONObject; |
| import org.apache.tapestry.valid.ValidationConstants; |
| import org.apache.tapestry.valid.ValidationConstraint; |
| import org.apache.tapestry.valid.ValidationStrings; |
| import org.apache.tapestry.valid.ValidatorException; |
| |
| import java.text.DecimalFormat; |
| import java.text.DecimalFormatSymbols; |
| import java.util.Locale; |
| |
| /** |
| * Expects the object to be a number, and checks that the value not smaller than a specified value. |
| * |
| * @author Howard Lewis Ship |
| * @since 4.0 |
| */ |
| public class Min extends BaseValidator |
| { |
| private double _min; |
| |
| public Min() |
| { |
| } |
| |
| public Min(String initializer) |
| { |
| super(initializer); |
| } |
| |
| /** |
| * Does comparison based on the {@link Number#doubleValue()}. |
| */ |
| |
| public void validate(IFormComponent field, ValidationMessages messages, Object object) |
| throws ValidatorException |
| { |
| Number value = (Number) object; |
| |
| if (_min > value.doubleValue()) |
| throw new ValidatorException(buildMessage(messages, field), ValidationConstraint.TOO_SMALL); |
| } |
| |
| private String getStringValue(Locale locale, IFormComponent field) |
| { |
| String ret = null; |
| NumberTranslator translator = (NumberTranslator)super.getFieldTranslator(field, NumberTranslator.class); |
| |
| if (translator != null) |
| ret = translator.format(field, locale, new Double(_min)); |
| else |
| ret = String.valueOf(_min); |
| |
| return ret; |
| } |
| |
| private String buildMessage(ValidationMessages messages, IFormComponent field) |
| { |
| return messages.formatValidationMessage( |
| getMessage(), |
| ValidationStrings.VALUE_TOO_SMALL, |
| new Object[] { |
| field.getDisplayName(), getStringValue(messages.getLocale(), field) |
| }); |
| } |
| |
| public void renderContribution(IMarkupWriter writer, IRequestCycle cycle, |
| FormComponentContributorContext context, IFormComponent field) |
| { |
| JSONObject profile = context.getProfile(); |
| |
| if (!profile.has(ValidationConstants.CONSTRAINTS)) { |
| profile.put(ValidationConstants.CONSTRAINTS, new JSONObject()); |
| } |
| JSONObject cons = profile.getJSONObject(ValidationConstants.CONSTRAINTS); |
| |
| context.addInitializationScript(field, "dojo.require(\"dojo.i18n.number\");"); |
| |
| String minString = getStringValue(context.getLocale(), field); |
| String grouping = ""; |
| |
| DecimalFormatSymbols symbols = null; |
| NumberTranslator translator = (NumberTranslator)super.getFieldTranslator(field, NumberTranslator.class); |
| |
| if (translator != null) { |
| DecimalFormat format = translator.getDecimalFormat(context.getLocale()); |
| |
| if (format.isGroupingUsed()) { |
| |
| grouping += ",separator:" + JSONObject.quote(format.getDecimalFormatSymbols().getGroupingSeparator()); |
| grouping += ",groupSize:" + format.getGroupingSize(); |
| } else { |
| |
| grouping += ",separator:\"\""; |
| } |
| |
| symbols = format.getDecimalFormatSymbols(); |
| } else { |
| |
| symbols = new DecimalFormatSymbols(context.getLocale()); |
| } |
| |
| accumulateProperty(cons, field.getClientId(), |
| new JSONLiteral("[tapestry.form.validation.greaterThanOrEqual," |
| + JSONObject.quote(minString) |
| + ",{" |
| + "decimal:" + JSONObject.quote(symbols.getDecimalSeparator()) |
| + grouping |
| + "}]")); |
| |
| accumulateProfileProperty(field, profile, ValidationConstants.CONSTRAINTS, buildMessage(context, field)); |
| } |
| |
| public void setMin(double min) |
| { |
| _min = min; |
| } |
| |
| public double getMin() |
| { |
| return _min; |
| } |
| } |