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package org.apache.tapestry.valid; |
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import java.util.HashMap; |
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import java.util.Locale; |
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import java.util.Map; |
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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.IFormComponent; |
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public class EmailValidator extends BaseValidator |
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{ |
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private int _minimumLength; |
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private String _minimumLengthMessage; |
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private String _invalidEmailFormatMessage; |
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private String _scriptPath = "/org/apache/tapestry/valid/EmailValidator.script"; |
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public EmailValidator() |
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{ |
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} |
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public EmailValidator(String initializer) |
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{ |
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super(initializer); |
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} |
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public String toString(IFormComponent field, Object value) |
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{ |
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if (value == null) return null; |
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return value.toString(); |
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} |
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public Object toObject(IFormComponent field, String input) |
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throws ValidatorException |
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{ |
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if (checkRequired(field, input)) return null; |
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if (_minimumLength > 0 && input.length() < _minimumLength) |
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throw new ValidatorException(buildMinimumLengthMessage(field), |
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ValidationConstraint.MINIMUM_WIDTH); |
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if (!isValidEmail(input)) |
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throw new ValidatorException(buildInvalidEmailFormatMessage(field), |
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ValidationConstraint.EMAIL_FORMAT); |
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return input; |
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} |
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public int getMinimumLength() |
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{ |
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return _minimumLength; |
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} |
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public void setMinimumLength(int minimumLength) |
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{ |
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_minimumLength = minimumLength; |
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} |
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public void renderValidatorContribution(IFormComponent field, |
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IMarkupWriter writer, IRequestCycle cycle) |
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{ |
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if (!isClientScriptingEnabled()) return; |
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Map symbols = new HashMap(); |
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Locale locale = field.getPage().getLocale(); |
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String displayName = field.getDisplayName(); |
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if (isRequired()) |
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symbols.put("requiredMessage", buildRequiredMessage(field)); |
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if (_minimumLength > 0) |
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symbols.put("minimumLengthMessage", |
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buildMinimumLengthMessage(field)); |
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String pattern = getPattern(getInvalidEmailFormatMessage(), |
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"invalid-email-format", locale); |
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symbols.put("emailFormatMessage", formatString(pattern, displayName)); |
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processValidatorScript(_scriptPath, cycle, field, symbols); |
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} |
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public String getScriptPath() |
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{ |
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return _scriptPath; |
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} |
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public void setScriptPath(String scriptPath) |
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{ |
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_scriptPath = scriptPath; |
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} |
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protected boolean isValidEmail(String email) |
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{ |
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int atIndex = email.indexOf('@'); |
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return !((atIndex <= 0) || (atIndex == email.length() - 1)); |
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} |
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public String getInvalidEmailFormatMessage() |
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{ |
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return _invalidEmailFormatMessage; |
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} |
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public String getMinimumLengthMessage() |
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{ |
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return _minimumLengthMessage; |
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} |
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public void setInvalidEmailFormatMessage(String string) |
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{ |
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_invalidEmailFormatMessage = string; |
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} |
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public void setMinimumLengthMessage(String string) |
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{ |
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_minimumLengthMessage = string; |
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} |
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protected String buildMinimumLengthMessage(IFormComponent field) |
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{ |
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String pattern = getPattern(_minimumLengthMessage, "field-too-short", |
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field.getPage().getLocale()); |
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return formatString(pattern, Integer.toString(_minimumLength), field |
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.getDisplayName()); |
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} |
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protected String buildInvalidEmailFormatMessage(IFormComponent field) |
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{ |
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String pattern = getPattern(_invalidEmailFormatMessage, |
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"invalid-email-format", field.getPage().getLocale()); |
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return formatString(pattern, field.getDisplayName()); |
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} |
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} |