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1015 lines
35 KiB
1015 lines
35 KiB
/*
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* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package javax.swing.text;
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import java.io.*;
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import java.text.*;
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import java.util.*;
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import javax.swing.*;
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/**
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* <code>MaskFormatter</code> is used to format and edit strings. The behavior
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* of a <code>MaskFormatter</code> is controlled by way of a String mask
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* that specifies the valid characters that can be contained at a particular
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* location in the <code>Document</code> model. The following characters can
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* be specified:
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*
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* <table border=1 summary="Valid characters and their descriptions">
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* <tr>
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* <th>Character </th>
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* <th><p style="text-align:left">Description</p></th>
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* </tr>
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* <tr>
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* <td>#</td>
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* <td>Any valid number, uses <code>Character.isDigit</code>.</td>
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* </tr>
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* <tr>
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* <td>'</td>
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* <td>Escape character, used to escape any of the
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* special formatting characters.</td>
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* </tr>
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* <tr>
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* <td>U</td><td>Any character (<code>Character.isLetter</code>). All
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* lowercase letters are mapped to upper case.</td>
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* </tr>
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* <tr><td>L</td><td>Any character (<code>Character.isLetter</code>). All
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* upper case letters are mapped to lower case.</td>
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* </tr>
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* <tr><td>A</td><td>Any character or number (<code>Character.isLetter</code>
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* or <code>Character.isDigit</code>)</td>
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* </tr>
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* <tr><td>?</td><td>Any character
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* (<code>Character.isLetter</code>).</td>
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* </tr>
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* <tr><td>*</td><td>Anything.</td></tr>
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* <tr><td>H</td><td>Any hex character (0-9, a-f or A-F).</td></tr>
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* </table>
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*
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* <p>
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* Typically characters correspond to one char, but in certain languages this
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* is not the case. The mask is on a per character basis, and will thus
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* adjust to fit as many chars as are needed.
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* <p>
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* You can further restrict the characters that can be input by the
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* <code>setInvalidCharacters</code> and <code>setValidCharacters</code>
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* methods. <code>setInvalidCharacters</code> allows you to specify
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* which characters are not legal. <code>setValidCharacters</code> allows
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* you to specify which characters are valid. For example, the following
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* code block is equivalent to a mask of '0xHHH' with no invalid/valid
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* characters:
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* <pre>
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* MaskFormatter formatter = new MaskFormatter("0x***");
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* formatter.setValidCharacters("0123456789abcdefABCDEF");
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* </pre>
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* <p>
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* When initially formatting a value if the length of the string is
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* less than the length of the mask, two things can happen. Either
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* the placeholder string will be used, or the placeholder character will
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* be used. Precedence is given to the placeholder string. For example:
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* <pre>
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* MaskFormatter formatter = new MaskFormatter("###-####");
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* formatter.setPlaceholderCharacter('_');
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* formatter.getDisplayValue(tf, "123");
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* </pre>
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* <p>
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* Would result in the string '123-____'. If
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* <code>setPlaceholder("555-1212")</code> was invoked '123-1212' would
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* result. The placeholder String is only used on the initial format,
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* on subsequent formats only the placeholder character will be used.
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* <p>
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* If a <code>MaskFormatter</code> is configured to only allow valid characters
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* (<code>setAllowsInvalid(false)</code>) literal characters will be skipped as
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* necessary when editing. Consider a <code>MaskFormatter</code> with
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* the mask "###-####" and current value "555-1212". Using the right
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* arrow key to navigate through the field will result in (| indicates the
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* position of the caret):
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* <pre>
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* |555-1212
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* 5|55-1212
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* 55|5-1212
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* 555-|1212
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* 555-1|212
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* </pre>
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* The '-' is a literal (non-editable) character, and is skipped.
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* <p>
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* Similar behavior will result when editing. Consider inserting the string
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* '123-45' and '12345' into the <code>MaskFormatter</code> in the
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* previous example. Both inserts will result in the same String,
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* '123-45__'. When <code>MaskFormatter</code>
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* is processing the insert at character position 3 (the '-'), two things can
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* happen:
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* <ol>
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* <li>If the inserted character is '-', it is accepted.
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* <li>If the inserted character matches the mask for the next non-literal
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* character, it is accepted at the new location.
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* <li>Anything else results in an invalid edit
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* </ol>
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* <p>
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* By default <code>MaskFormatter</code> will not allow invalid edits, you can
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* change this with the <code>setAllowsInvalid</code> method, and will
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* commit edits on valid edits (use the <code>setCommitsOnValidEdit</code> to
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* change this).
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* <p>
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* By default, <code>MaskFormatter</code> is in overwrite mode. That is as
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* characters are typed a new character is not inserted, rather the character
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* at the current location is replaced with the newly typed character. You
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* can change this behavior by way of the method <code>setOverwriteMode</code>.
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* <p>
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* <strong>Warning:</strong>
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* Serialized objects of this class will not be compatible with
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* future Swing releases. The current serialization support is
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* appropriate for short term storage or RMI between applications running
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* the same version of Swing. As of 1.4, support for long term storage
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* of all JavaBeans™
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* has been added to the <code>java.beans</code> package.
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* Please see {@link java.beans.XMLEncoder}.
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*
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* @since 1.4
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*/
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public class MaskFormatter extends DefaultFormatter {
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// Potential values in mask.
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private static final char DIGIT_KEY = '#';
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private static final char LITERAL_KEY = '\'';
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private static final char UPPERCASE_KEY = 'U';
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private static final char LOWERCASE_KEY = 'L';
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private static final char ALPHA_NUMERIC_KEY = 'A';
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private static final char CHARACTER_KEY = '?';
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private static final char ANYTHING_KEY = '*';
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private static final char HEX_KEY = 'H';
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private static final MaskCharacter[] EmptyMaskChars = new MaskCharacter[0];
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/** The user specified mask. */
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private String mask;
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private transient MaskCharacter[] maskChars;
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/** List of valid characters. */
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private String validCharacters;
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/** List of invalid characters. */
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private String invalidCharacters;
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/** String used for the passed in value if it does not completely
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* fill the mask. */
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private String placeholderString;
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/** String used to represent characters not present. */
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private char placeholder;
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/** Indicates if the value contains the literal characters. */
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private boolean containsLiteralChars;
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/**
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* Creates a MaskFormatter with no mask.
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*/
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public MaskFormatter() {
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setAllowsInvalid(false);
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containsLiteralChars = true;
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maskChars = EmptyMaskChars;
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placeholder = ' ';
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}
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/**
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* Creates a <code>MaskFormatter</code> with the specified mask.
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* A <code>ParseException</code>
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* will be thrown if <code>mask</code> is an invalid mask.
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*
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* @throws ParseException if mask does not contain valid mask characters
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*/
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public MaskFormatter(String mask) throws ParseException {
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this();
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setMask(mask);
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}
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/**
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* Sets the mask dictating the legal characters.
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* This will throw a <code>ParseException</code> if <code>mask</code> is
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* not valid.
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*
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* @throws ParseException if mask does not contain valid mask characters
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*/
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public void setMask(String mask) throws ParseException {
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this.mask = mask;
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updateInternalMask();
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}
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/**
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* Returns the formatting mask.
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*
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* @return Mask dictating legal character values.
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*/
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public String getMask() {
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return mask;
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}
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/**
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* Allows for further restricting of the characters that can be input.
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* Only characters specified in the mask, not in the
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* <code>invalidCharacters</code>, and in
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* <code>validCharacters</code> will be allowed to be input. Passing
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* in null (the default) implies the valid characters are only bound
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* by the mask and the invalid characters.
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*
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* @param validCharacters If non-null, specifies legal characters.
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*/
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public void setValidCharacters(String validCharacters) {
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this.validCharacters = validCharacters;
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}
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/**
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* Returns the valid characters that can be input.
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*
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* @return Legal characters
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*/
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public String getValidCharacters() {
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return validCharacters;
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}
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/**
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* Allows for further restricting of the characters that can be input.
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* Only characters specified in the mask, not in the
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* <code>invalidCharacters</code>, and in
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* <code>validCharacters</code> will be allowed to be input. Passing
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* in null (the default) implies the valid characters are only bound
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* by the mask and the valid characters.
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*
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* @param invalidCharacters If non-null, specifies illegal characters.
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*/
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public void setInvalidCharacters(String invalidCharacters) {
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this.invalidCharacters = invalidCharacters;
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}
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/**
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* Returns the characters that are not valid for input.
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*
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* @return illegal characters.
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*/
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public String getInvalidCharacters() {
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return invalidCharacters;
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}
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/**
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* Sets the string to use if the value does not completely fill in
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* the mask. A null value implies the placeholder char should be used.
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*
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* @param placeholder String used when formatting if the value does not
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* completely fill the mask
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*/
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public void setPlaceholder(String placeholder) {
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this.placeholderString = placeholder;
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}
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/**
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* Returns the String to use if the value does not completely fill
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* in the mask.
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*
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* @return String used when formatting if the value does not
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* completely fill the mask
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*/
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public String getPlaceholder() {
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return placeholderString;
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}
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/**
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* Sets the character to use in place of characters that are not present
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* in the value, ie the user must fill them in. The default value is
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* a space.
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* <p>
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* This is only applicable if the placeholder string has not been
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* specified, or does not completely fill in the mask.
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*
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* @param placeholder Character used when formatting if the value does not
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* completely fill the mask
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*/
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public void setPlaceholderCharacter(char placeholder) {
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this.placeholder = placeholder;
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}
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/**
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* Returns the character to use in place of characters that are not present
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* in the value, ie the user must fill them in.
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*
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* @return Character used when formatting if the value does not
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* completely fill the mask
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*/
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public char getPlaceholderCharacter() {
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return placeholder;
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}
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/**
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* If true, the returned value and set value will also contain the literal
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* characters in mask.
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* <p>
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* For example, if the mask is <code>'(###) ###-####'</code>, the
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* current value is <code>'(415) 555-1212'</code>, and
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* <code>valueContainsLiteralCharacters</code> is
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* true <code>stringToValue</code> will return
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* <code>'(415) 555-1212'</code>. On the other hand, if
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* <code>valueContainsLiteralCharacters</code> is false,
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* <code>stringToValue</code> will return <code>'4155551212'</code>.
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*
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* @param containsLiteralChars Used to indicate if literal characters in
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* mask should be returned in stringToValue
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*/
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public void setValueContainsLiteralCharacters(
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boolean containsLiteralChars) {
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this.containsLiteralChars = containsLiteralChars;
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}
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/**
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* Returns true if <code>stringToValue</code> should return literal
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* characters in the mask.
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*
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* @return True if literal characters in mask should be returned in
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* stringToValue
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*/
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public boolean getValueContainsLiteralCharacters() {
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return containsLiteralChars;
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}
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/**
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* Parses the text, returning the appropriate Object representation of
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* the String <code>value</code>. This strips the literal characters as
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* necessary and invokes supers <code>stringToValue</code>, so that if
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* you have specified a value class (<code>setValueClass</code>) an
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* instance of it will be created. This will throw a
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* <code>ParseException</code> if the value does not match the current
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* mask. Refer to {@link #setValueContainsLiteralCharacters} for details
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* on how literals are treated.
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*
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* @throws ParseException if there is an error in the conversion
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* @param value String to convert
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* @see #setValueContainsLiteralCharacters
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* @return Object representation of text
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*/
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public Object stringToValue(String value) throws ParseException {
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return stringToValue(value, true);
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}
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/**
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* Returns a String representation of the Object <code>value</code>
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* based on the mask. Refer to
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* {@link #setValueContainsLiteralCharacters} for details
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* on how literals are treated.
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*
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* @throws ParseException if there is an error in the conversion
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* @param value Value to convert
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* @see #setValueContainsLiteralCharacters
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* @return String representation of value
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*/
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public String valueToString(Object value) throws ParseException {
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String sValue = (value == null) ? "" : value.toString();
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StringBuilder result = new StringBuilder();
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String placeholder = getPlaceholder();
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int[] valueCounter = { 0 };
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append(result, sValue, valueCounter, placeholder, maskChars);
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return result.toString();
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}
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/**
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* Installs the <code>DefaultFormatter</code> onto a particular
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* <code>JFormattedTextField</code>.
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* This will invoke <code>valueToString</code> to convert the
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* current value from the <code>JFormattedTextField</code> to
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* a String. This will then install the <code>Action</code>s from
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* <code>getActions</code>, the <code>DocumentFilter</code>
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* returned from <code>getDocumentFilter</code> and the
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* <code>NavigationFilter</code> returned from
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* <code>getNavigationFilter</code> onto the
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* <code>JFormattedTextField</code>.
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* <p>
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* Subclasses will typically only need to override this if they
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* wish to install additional listeners on the
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* <code>JFormattedTextField</code>.
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* <p>
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* If there is a <code>ParseException</code> in converting the
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* current value to a String, this will set the text to an empty
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* String, and mark the <code>JFormattedTextField</code> as being
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* in an invalid state.
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* <p>
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* While this is a public method, this is typically only useful
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* for subclassers of <code>JFormattedTextField</code>.
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* <code>JFormattedTextField</code> will invoke this method at
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* the appropriate times when the value changes, or its internal
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* state changes.
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*
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* @param ftf JFormattedTextField to format for, may be null indicating
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* uninstall from current JFormattedTextField.
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*/
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public void install(JFormattedTextField ftf) {
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super.install(ftf);
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// valueToString doesn't throw, but stringToValue does, need to
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// update the editValid state appropriately
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if (ftf != null) {
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Object value = ftf.getValue();
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try {
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stringToValue(valueToString(value));
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} catch (ParseException pe) {
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setEditValid(false);
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}
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}
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}
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/**
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* Actual <code>stringToValue</code> implementation.
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* If <code>completeMatch</code> is true, the value must exactly match
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* the mask, on the other hand if <code>completeMatch</code> is false
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* the string must match the mask or the placeholder string.
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*/
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private Object stringToValue(String value, boolean completeMatch) throws
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ParseException {
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int errorOffset;
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if ((errorOffset = getInvalidOffset(value, completeMatch)) == -1) {
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if (!getValueContainsLiteralCharacters()) {
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value = stripLiteralChars(value);
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}
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return super.stringToValue(value);
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}
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throw new ParseException("stringToValue passed invalid value",
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errorOffset);
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}
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/**
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* Returns -1 if the passed in string is valid, otherwise the index of
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* the first bogus character is returned.
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*/
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private int getInvalidOffset(String string, boolean completeMatch) {
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int iLength = string.length();
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if (iLength != getMaxLength()) {
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// trivially false
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return iLength;
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}
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for (int counter = 0, max = string.length(); counter < max; counter++){
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char aChar = string.charAt(counter);
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if (!isValidCharacter(counter, aChar) &&
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(completeMatch || !isPlaceholder(counter, aChar))) {
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return counter;
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}
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}
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return -1;
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}
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/**
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* Invokes <code>append</code> on the mask characters in
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* <code>mask</code>.
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*/
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private void append(StringBuilder result, String value, int[] index,
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String placeholder, MaskCharacter[] mask)
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throws ParseException {
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for (int counter = 0, maxCounter = mask.length;
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counter < maxCounter; counter++) {
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mask[counter].append(result, value, index, placeholder);
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}
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}
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/**
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* Updates the internal representation of the mask.
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*/
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private void updateInternalMask() throws ParseException {
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String mask = getMask();
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ArrayList<MaskCharacter> fixed = new ArrayList<MaskCharacter>();
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ArrayList<MaskCharacter> temp = fixed;
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if (mask != null) {
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for (int counter = 0, maxCounter = mask.length();
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counter < maxCounter; counter++) {
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char maskChar = mask.charAt(counter);
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switch (maskChar) {
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case DIGIT_KEY:
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temp.add(new DigitMaskCharacter());
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break;
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case LITERAL_KEY:
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if (++counter < maxCounter) {
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maskChar = mask.charAt(counter);
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temp.add(new LiteralCharacter(maskChar));
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}
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// else: Could actually throw if else
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break;
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case UPPERCASE_KEY:
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temp.add(new UpperCaseCharacter());
|
|
break;
|
|
case LOWERCASE_KEY:
|
|
temp.add(new LowerCaseCharacter());
|
|
break;
|
|
case ALPHA_NUMERIC_KEY:
|
|
temp.add(new AlphaNumericCharacter());
|
|
break;
|
|
case CHARACTER_KEY:
|
|
temp.add(new CharCharacter());
|
|
break;
|
|
case ANYTHING_KEY:
|
|
temp.add(new MaskCharacter());
|
|
break;
|
|
case HEX_KEY:
|
|
temp.add(new HexCharacter());
|
|
break;
|
|
default:
|
|
temp.add(new LiteralCharacter(maskChar));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (fixed.size() == 0) {
|
|
maskChars = EmptyMaskChars;
|
|
}
|
|
else {
|
|
maskChars = new MaskCharacter[fixed.size()];
|
|
fixed.toArray(maskChars);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the MaskCharacter at the specified location.
|
|
*/
|
|
private MaskCharacter getMaskCharacter(int index) {
|
|
if (index >= maskChars.length) {
|
|
return null;
|
|
}
|
|
return maskChars[index];
|
|
}
|
|
|
|
/**
|
|
* Returns true if the placeholder character matches aChar.
|
|
*/
|
|
private boolean isPlaceholder(int index, char aChar) {
|
|
return (getPlaceholderCharacter() == aChar);
|
|
}
|
|
|
|
/**
|
|
* Returns true if the passed in character matches the mask at the
|
|
* specified location.
|
|
*/
|
|
private boolean isValidCharacter(int index, char aChar) {
|
|
return getMaskCharacter(index).isValidCharacter(aChar);
|
|
}
|
|
|
|
/**
|
|
* Returns true if the character at the specified location is a literal,
|
|
* that is it can not be edited.
|
|
*/
|
|
private boolean isLiteral(int index) {
|
|
return getMaskCharacter(index).isLiteral();
|
|
}
|
|
|
|
/**
|
|
* Returns the maximum length the text can be.
|
|
*/
|
|
private int getMaxLength() {
|
|
return maskChars.length;
|
|
}
|
|
|
|
/**
|
|
* Returns the literal character at the specified location.
|
|
*/
|
|
private char getLiteral(int index) {
|
|
return getMaskCharacter(index).getChar((char)0);
|
|
}
|
|
|
|
/**
|
|
* Returns the character to insert at the specified location based on
|
|
* the passed in character. This provides a way to map certain sets
|
|
* of characters to alternative values (lowercase to
|
|
* uppercase...).
|
|
*/
|
|
private char getCharacter(int index, char aChar) {
|
|
return getMaskCharacter(index).getChar(aChar);
|
|
}
|
|
|
|
/**
|
|
* Removes the literal characters from the passed in string.
|
|
*/
|
|
private String stripLiteralChars(String string) {
|
|
StringBuilder sb = null;
|
|
int last = 0;
|
|
|
|
for (int counter = 0, max = string.length(); counter < max; counter++){
|
|
if (isLiteral(counter)) {
|
|
if (sb == null) {
|
|
sb = new StringBuilder();
|
|
if (counter > 0) {
|
|
sb.append(string.substring(0, counter));
|
|
}
|
|
last = counter + 1;
|
|
}
|
|
else if (last != counter) {
|
|
sb.append(string.substring(last, counter));
|
|
}
|
|
last = counter + 1;
|
|
}
|
|
}
|
|
if (sb == null) {
|
|
// Assume the mask isn't all literals.
|
|
return string;
|
|
}
|
|
else if (last != string.length()) {
|
|
if (sb == null) {
|
|
return string.substring(last);
|
|
}
|
|
sb.append(string.substring(last));
|
|
}
|
|
return sb.toString();
|
|
}
|
|
|
|
|
|
/**
|
|
* Subclassed to update the internal representation of the mask after
|
|
* the default read operation has completed.
|
|
*/
|
|
private void readObject(ObjectInputStream s)
|
|
throws IOException, ClassNotFoundException {
|
|
s.defaultReadObject();
|
|
try {
|
|
updateInternalMask();
|
|
} catch (ParseException pe) {
|
|
// assert();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns true if the MaskFormatter allows invalid, or
|
|
* the offset is less than the max length and the character at
|
|
* <code>offset</code> is a literal.
|
|
*/
|
|
boolean isNavigatable(int offset) {
|
|
if (!getAllowsInvalid()) {
|
|
return (offset < getMaxLength() && !isLiteral(offset));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Returns true if the operation described by <code>rh</code> will
|
|
* result in a legal edit. This may set the <code>value</code>
|
|
* field of <code>rh</code>.
|
|
* <p>
|
|
* This is overriden to return true for a partial match.
|
|
*/
|
|
boolean isValidEdit(ReplaceHolder rh) {
|
|
if (!getAllowsInvalid()) {
|
|
String newString = getReplaceString(rh.offset, rh.length, rh.text);
|
|
|
|
try {
|
|
rh.value = stringToValue(newString, false);
|
|
|
|
return true;
|
|
} catch (ParseException pe) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* This method does the following (assuming !getAllowsInvalid()):
|
|
* iterate over the max of the deleted region or the text length, for
|
|
* each character:
|
|
* <ol>
|
|
* <li>If it is valid (matches the mask at the particular position, or
|
|
* matches the literal character at the position), allow it
|
|
* <li>Else if the position identifies a literal character, add it. This
|
|
* allows for the user to paste in text that may/may not contain
|
|
* the literals. For example, in pasing in 5551212 into ###-####
|
|
* when the 1 is evaluated it is illegal (by the first test), but there
|
|
* is a literal at this position (-), so it is used. NOTE: This has
|
|
* a problem that you can't tell (without looking ahead) if you should
|
|
* eat literals in the text. For example, if you paste '555' into
|
|
* #5##, should it result in '5555' or '555 '? The current code will
|
|
* result in the latter, which feels a little better as selecting
|
|
* text than pasting will always result in the same thing.
|
|
* <li>Else if at the end of the inserted text, the replace the item with
|
|
* the placeholder
|
|
* <li>Otherwise the insert is bogus and false is returned.
|
|
* </ol>
|
|
*/
|
|
boolean canReplace(ReplaceHolder rh) {
|
|
// This method is rather long, but much of the burden is in
|
|
// maintaining a String and swapping to a StringBuilder only if
|
|
// absolutely necessary.
|
|
if (!getAllowsInvalid()) {
|
|
StringBuilder replace = null;
|
|
String text = rh.text;
|
|
int tl = (text != null) ? text.length() : 0;
|
|
|
|
if (tl == 0 && rh.length == 1 && getFormattedTextField().
|
|
getSelectionStart() != rh.offset) {
|
|
// Backspace, adjust to actually delete next non-literal.
|
|
while (rh.offset > 0 && isLiteral(rh.offset)) {
|
|
rh.offset--;
|
|
}
|
|
}
|
|
int max = Math.min(getMaxLength() - rh.offset,
|
|
Math.max(tl, rh.length));
|
|
for (int counter = 0, textIndex = 0; counter < max; counter++) {
|
|
if (textIndex < tl && isValidCharacter(rh.offset + counter,
|
|
text.charAt(textIndex))) {
|
|
char aChar = text.charAt(textIndex);
|
|
if (aChar != getCharacter(rh.offset + counter, aChar)) {
|
|
if (replace == null) {
|
|
replace = new StringBuilder();
|
|
if (textIndex > 0) {
|
|
replace.append(text.substring(0, textIndex));
|
|
}
|
|
}
|
|
}
|
|
if (replace != null) {
|
|
replace.append(getCharacter(rh.offset + counter,
|
|
aChar));
|
|
}
|
|
textIndex++;
|
|
}
|
|
else if (isLiteral(rh.offset + counter)) {
|
|
if (replace != null) {
|
|
replace.append(getLiteral(rh.offset + counter));
|
|
if (textIndex < tl) {
|
|
max = Math.min(max + 1, getMaxLength() -
|
|
rh.offset);
|
|
}
|
|
}
|
|
else if (textIndex > 0) {
|
|
replace = new StringBuilder(max);
|
|
replace.append(text.substring(0, textIndex));
|
|
replace.append(getLiteral(rh.offset + counter));
|
|
if (textIndex < tl) {
|
|
// Evaluate the character in text again.
|
|
max = Math.min(max + 1, getMaxLength() -
|
|
rh.offset);
|
|
}
|
|
else if (rh.cursorPosition == -1) {
|
|
rh.cursorPosition = rh.offset + counter;
|
|
}
|
|
}
|
|
else {
|
|
rh.offset++;
|
|
rh.length--;
|
|
counter--;
|
|
max--;
|
|
}
|
|
}
|
|
else if (textIndex >= tl) {
|
|
// placeholder
|
|
if (replace == null) {
|
|
replace = new StringBuilder();
|
|
if (text != null) {
|
|
replace.append(text);
|
|
}
|
|
}
|
|
replace.append(getPlaceholderCharacter());
|
|
if (tl > 0 && rh.cursorPosition == -1) {
|
|
rh.cursorPosition = rh.offset + counter;
|
|
}
|
|
}
|
|
else {
|
|
// Bogus character.
|
|
return false;
|
|
}
|
|
}
|
|
if (replace != null) {
|
|
rh.text = replace.toString();
|
|
}
|
|
else if (text != null && rh.offset + tl > getMaxLength()) {
|
|
rh.text = text.substring(0, getMaxLength() - rh.offset);
|
|
}
|
|
if (getOverwriteMode() && rh.text != null) {
|
|
rh.length = rh.text.length();
|
|
}
|
|
}
|
|
return super.canReplace(rh);
|
|
}
|
|
|
|
|
|
//
|
|
// Interal classes used to represent the mask.
|
|
//
|
|
private class MaskCharacter {
|
|
/**
|
|
* Subclasses should override this returning true if the instance
|
|
* represents a literal character. The default implementation
|
|
* returns false.
|
|
*/
|
|
public boolean isLiteral() {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns true if <code>aChar</code> is a valid reprensentation of
|
|
* the receiver. The default implementation returns true if the
|
|
* receiver represents a literal character and <code>getChar</code>
|
|
* == aChar. Otherwise, this will return true is <code>aChar</code>
|
|
* is contained in the valid characters and not contained
|
|
* in the invalid characters.
|
|
*/
|
|
public boolean isValidCharacter(char aChar) {
|
|
if (isLiteral()) {
|
|
return (getChar(aChar) == aChar);
|
|
}
|
|
|
|
aChar = getChar(aChar);
|
|
|
|
String filter = getValidCharacters();
|
|
|
|
if (filter != null && filter.indexOf(aChar) == -1) {
|
|
return false;
|
|
}
|
|
filter = getInvalidCharacters();
|
|
if (filter != null && filter.indexOf(aChar) != -1) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns the character to insert for <code>aChar</code>. The
|
|
* default implementation returns <code>aChar</code>. Subclasses
|
|
* that wish to do some sort of mapping, perhaps lower case to upper
|
|
* case should override this and do the necessary mapping.
|
|
*/
|
|
public char getChar(char aChar) {
|
|
return aChar;
|
|
}
|
|
|
|
/**
|
|
* Appends the necessary character in <code>formatting</code> at
|
|
* <code>index</code> to <code>buff</code>.
|
|
*/
|
|
public void append(StringBuilder buff, String formatting, int[] index,
|
|
String placeholder)
|
|
throws ParseException {
|
|
boolean inString = index[0] < formatting.length();
|
|
char aChar = inString ? formatting.charAt(index[0]) : 0;
|
|
|
|
if (isLiteral()) {
|
|
buff.append(getChar(aChar));
|
|
if (getValueContainsLiteralCharacters()) {
|
|
if (inString && aChar != getChar(aChar)) {
|
|
throw new ParseException("Invalid character: " +
|
|
aChar, index[0]);
|
|
}
|
|
index[0] = index[0] + 1;
|
|
}
|
|
}
|
|
else if (index[0] >= formatting.length()) {
|
|
if (placeholder != null && index[0] < placeholder.length()) {
|
|
buff.append(placeholder.charAt(index[0]));
|
|
}
|
|
else {
|
|
buff.append(getPlaceholderCharacter());
|
|
}
|
|
index[0] = index[0] + 1;
|
|
}
|
|
else if (isValidCharacter(aChar)) {
|
|
buff.append(getChar(aChar));
|
|
index[0] = index[0] + 1;
|
|
}
|
|
else {
|
|
throw new ParseException("Invalid character: " + aChar,
|
|
index[0]);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Used to represent a fixed character in the mask.
|
|
*/
|
|
private class LiteralCharacter extends MaskCharacter {
|
|
private char fixedChar;
|
|
|
|
public LiteralCharacter(char fixedChar) {
|
|
this.fixedChar = fixedChar;
|
|
}
|
|
|
|
public boolean isLiteral() {
|
|
return true;
|
|
}
|
|
|
|
public char getChar(char aChar) {
|
|
return fixedChar;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Represents a number, uses <code>Character.isDigit</code>.
|
|
*/
|
|
private class DigitMaskCharacter extends MaskCharacter {
|
|
public boolean isValidCharacter(char aChar) {
|
|
return (Character.isDigit(aChar) &&
|
|
super.isValidCharacter(aChar));
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Represents a character, lower case letters are mapped to upper case
|
|
* using <code>Character.toUpperCase</code>.
|
|
*/
|
|
private class UpperCaseCharacter extends MaskCharacter {
|
|
public boolean isValidCharacter(char aChar) {
|
|
return (Character.isLetter(aChar) &&
|
|
super.isValidCharacter(aChar));
|
|
}
|
|
|
|
public char getChar(char aChar) {
|
|
return Character.toUpperCase(aChar);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Represents a character, upper case letters are mapped to lower case
|
|
* using <code>Character.toLowerCase</code>.
|
|
*/
|
|
private class LowerCaseCharacter extends MaskCharacter {
|
|
public boolean isValidCharacter(char aChar) {
|
|
return (Character.isLetter(aChar) &&
|
|
super.isValidCharacter(aChar));
|
|
}
|
|
|
|
public char getChar(char aChar) {
|
|
return Character.toLowerCase(aChar);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Represents either a character or digit, uses
|
|
* <code>Character.isLetterOrDigit</code>.
|
|
*/
|
|
private class AlphaNumericCharacter extends MaskCharacter {
|
|
public boolean isValidCharacter(char aChar) {
|
|
return (Character.isLetterOrDigit(aChar) &&
|
|
super.isValidCharacter(aChar));
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Represents a letter, uses <code>Character.isLetter</code>.
|
|
*/
|
|
private class CharCharacter extends MaskCharacter {
|
|
public boolean isValidCharacter(char aChar) {
|
|
return (Character.isLetter(aChar) &&
|
|
super.isValidCharacter(aChar));
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Represents a hex character, 0-9a-fA-F. a-f is mapped to A-F
|
|
*/
|
|
private class HexCharacter extends MaskCharacter {
|
|
public boolean isValidCharacter(char aChar) {
|
|
return ((aChar == '0' || aChar == '1' ||
|
|
aChar == '2' || aChar == '3' ||
|
|
aChar == '4' || aChar == '5' ||
|
|
aChar == '6' || aChar == '7' ||
|
|
aChar == '8' || aChar == '9' ||
|
|
aChar == 'a' || aChar == 'A' ||
|
|
aChar == 'b' || aChar == 'B' ||
|
|
aChar == 'c' || aChar == 'C' ||
|
|
aChar == 'd' || aChar == 'D' ||
|
|
aChar == 'e' || aChar == 'E' ||
|
|
aChar == 'f' || aChar == 'F') &&
|
|
super.isValidCharacter(aChar));
|
|
}
|
|
|
|
public char getChar(char aChar) {
|
|
if (Character.isDigit(aChar)) {
|
|
return aChar;
|
|
}
|
|
return Character.toUpperCase(aChar);
|
|
}
|
|
}
|
|
}
|