forked from fanruan/design
xiqiu
3 years ago
18 changed files with 1062 additions and 795 deletions
@ -0,0 +1,76 @@
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package com.fr.design.gui.itextfield; |
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import javax.swing.text.AttributeSet; |
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import javax.swing.text.BadLocationException; |
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import javax.swing.text.PlainDocument; |
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import java.awt.Toolkit; |
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public class UIPositiveAndNegativeIntNumberField extends UINumberField { |
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private static final long serialVersionUID = 4946379346015964509L; |
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public void setFieldDocument() { |
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setDocument(createNumberDocument()); |
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} |
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public class NumberDocument extends PlainDocument { |
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private static final long serialVersionUID = 1024213269275179172L; |
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public NumberDocument() { |
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} |
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public boolean checkString(int offset, String s, String str) { |
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String strNew = str.substring(0, offset) + s + str.substring(offset, getLength()); |
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return isMinusSignOnly(strNew) || (isIntNumber(strNew) && isInputIllegalNumber(strNew) && !isOverMaxOrMinValue(strNew)); |
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} |
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public void insertString(int offset, String s, AttributeSet a) throws BadLocationException { |
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String str = getText(0, getLength()); |
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if (!checkString(offset, s, str)) { |
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Toolkit.getDefaultToolkit().beep(); |
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return; |
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} |
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setisContentChanged(true); |
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super.insertString(offset, s, a); |
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} |
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private boolean isMinusSignOnly(String s) { |
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return s.contains("-") && s.length() == 1; |
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} |
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/** |
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* 输入字符是否是不合法数字 |
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* @param s 输入的字符串 |
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* @return 是否不合法 |
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*/ |
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private boolean isInputIllegalNumber(String s) { |
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try { |
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Integer.parseInt(s); |
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} catch (Exception e) { |
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return false; |
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} |
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return true; |
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} |
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private boolean isIntNumber(String s) { |
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boolean result = true; |
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for (int i = 0; i < s.length(); i++) { |
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String ch = s.charAt(i) + ""; |
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if (!ch.matches("^[0-9\\-]+$")) { |
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result = false; |
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} |
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} |
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return result; |
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} |
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private boolean isOverMaxOrMinValue(String s) { |
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int value = Integer.parseInt(s); |
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return (value < getMinValue() || value > getMaxValue()); |
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} |
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} |
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public NumberDocument createNumberDocument() { |
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return new NumberDocument(); |
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} |
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} |
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