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| package org.apache.tapestry.form.validator; |
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| import org.apache.tapestry.IMarkupWriter; |
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| import org.apache.tapestry.IRequestCycle; |
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| import org.apache.tapestry.form.FormComponentContributorContext; |
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| import org.apache.tapestry.form.IFormComponent; |
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| import org.apache.tapestry.form.ValidationMessages; |
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| import org.apache.tapestry.valid.ValidationConstraint; |
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| import org.apache.tapestry.valid.ValidationStrings; |
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| import org.apache.tapestry.valid.ValidatorException; |
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| public class MaxLength extends BaseValidator |
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| { |
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| private int _maxLength; |
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| public MaxLength()
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| { |
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| } |
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| public MaxLength(String initializer)
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| { |
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| super(initializer);
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| } |
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| public void setMaxLength(int maxLength)
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| { |
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| _maxLength = maxLength;
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| } |
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| public void validate(IFormComponent field, ValidationMessages messages, Object object)
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| throws ValidatorException |
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| { |
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| String string = (String) object;
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| if (string.length() > _maxLength)
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| throw new ValidatorException(buildMessage(messages, field),
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| ValidationConstraint.MAXIMUM_WIDTH); |
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| } |
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| protected String buildMessage(ValidationMessages messages, IFormComponent field)
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| { |
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| return messages.formatValidationMessage(
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| getMessage(), |
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| ValidationStrings.VALUE_TOO_LONG, |
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| new Object[] |
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| { new Integer(_maxLength), field.getDisplayName() }); |
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| } |
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| public void renderContribution(IMarkupWriter writer, IRequestCycle cycle,
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| FormComponentContributorContext context, IFormComponent field) |
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| { |
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| context.includeClasspathScript("/org/apache/tapestry/form/validator/StringValidator.js");
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| StringBuffer buffer = new StringBuffer("function(event) { validate_max_length(event, ");
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| buffer.append(context.getFieldDOM());
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| buffer.append(", ");
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| buffer.append(_maxLength);
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| buffer.append(", '");
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| buffer.append(ValidatorUtils.escapeReservedCharacters(buildMessage(context, field)));
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| buffer.append("'); }");
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| context.addSubmitListener(buffer.toString());
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| } |
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| } |