diff options
Diffstat (limited to 'target_explorer/plugins/org.eclipse.tcf.te.ui.controls/src/org/eclipse/tcf/te/ui/controls/validator/NumberValidator.java')
-rw-r--r-- | target_explorer/plugins/org.eclipse.tcf.te.ui.controls/src/org/eclipse/tcf/te/ui/controls/validator/NumberValidator.java | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/target_explorer/plugins/org.eclipse.tcf.te.ui.controls/src/org/eclipse/tcf/te/ui/controls/validator/NumberValidator.java b/target_explorer/plugins/org.eclipse.tcf.te.ui.controls/src/org/eclipse/tcf/te/ui/controls/validator/NumberValidator.java new file mode 100644 index 000000000..9178c2dd9 --- /dev/null +++ b/target_explorer/plugins/org.eclipse.tcf.te.ui.controls/src/org/eclipse/tcf/te/ui/controls/validator/NumberValidator.java @@ -0,0 +1,100 @@ +/******************************************************************************* + * Copyright (c) 2011 Wind River Systems, Inc. and others. All rights reserved. + * This program and the accompanying materials are made available under the terms + * of the Eclipse Public License v1.0 which accompanies this distribution, and is + * available at http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * Wind River Systems - initial API and implementation + *******************************************************************************/ +package org.eclipse.tcf.te.ui.controls.validator; + +import java.text.MessageFormat; + +/** + * Positive integer number validator for text widgets. + */ +public class NumberValidator extends RegexValidator { + + // keys for error messages + public static final String ERROR_INVALID_RANGE = "NumberValidator_Error_InvalidRange"; //$NON-NLS-1$ + + // regular expressions + protected static final String NUMBER_REGEX = "([0-9]*)"; //$NON-NLS-1$ + + private int min = 0; + private int max = Integer.MAX_VALUE; + + /** + * Constructor + */ + public NumberValidator() { + this(-1, -1); + } + + /** + * Constructor + * + * @param min The lower boundary of the allowed input range. + * If less than zero the value is set to 0. + * @param max The upper boundary of the allowed input range. + * If less than zero the value is set to INTEGER.MAX_VALUE. + */ + public NumberValidator(int min, int max) { + this(NO_ATTR, NUMBER_REGEX, min, max); + } + + /** + * Constructor + * + * @param attributes The verify listener attributes. + * @param regEx The regular expression. + * @param min The minimum allowed input. + * If less than zero the value is set to 0. + * @param max The maximum allowed input. + * If less than zero the value is set to INTEGER.MAX_VALUE. + */ + public NumberValidator(int attributes, String regEx, int min, int max) { + super(attributes, regEx); + setBounds(min, max); + } + + /** + * Sets the lower and upper value boundary. + * + * @param min The minimum allowed input. + * If less than zero the value is set to 0. + * @param max The maximum allowed input. + * If less than zero the value is set to INTEGER.MAX_VALUE. + */ + public void setBounds(int min, int max) { + min = (min >= 0) ? min : 0; + max = (max >= 0) ? max : Integer.MAX_VALUE; + this.min = Math.min(min, max); + this.max = Math.max(min, max); + } + + /* (non-Javadoc) + * @see org.eclipse.tcf.te.ui.controls.validator.RegexValidator#isValid(java.lang.String) + */ + @Override + public boolean isValid(String newText) { + boolean valid = super.isValid(newText); + + // If the value is a valid number matching the regex, check if + // the range is valid + if (valid) { + try { + // Decode the string into an integer object + int value = Integer.decode(newText).intValue(); + if (value < min || value > max) { + // Value is out of range -> set error message + setMessage(MessageFormat.format(getMessageText(ERROR_INVALID_RANGE), Integer.valueOf(min), Integer.valueOf(max)), getMessageTextType(ERROR_INVALID_RANGE, ERROR)); + valid = getMessageType() != ERROR; + } + } catch (NumberFormatException e) { /* ignored on purpose */ } + } + + return valid; + } +} |