Mercurial > hg > Applications > tvnjviewer

comparison src/viewer_swing/java/com/glavsoft/viewer/swing/gui/AutoCompletionComboEditorDocument.java @ 0:daa24f8a557b

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TightVNC original
author YU
date Thu, 11 Sep 2014 07:30:03 +0900
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-1:000000000000 0:daa24f8a557b
1 package com.glavsoft.viewer.swing.gui;
2
3 import javax.swing.*;
4 import javax.swing.text.AttributeSet;
5 import javax.swing.text.BadLocationException;
6 import javax.swing.text.JTextComponent;
7 import javax.swing.text.PlainDocument;
8 import java.awt.event.ActionEvent;
9 import java.awt.event.ActionListener;
10 import java.awt.event.FocusAdapter;
11 import java.awt.event.FocusEvent;
12
13 /**
14 * @author dime at tightvnc.com
15 *
16 * Using idea by Thomas Bierhance from http://www.orbital-computer.de/JComboBox/
17 */
18 public class AutoCompletionComboEditorDocument extends PlainDocument {
19
20 private ComboBoxModel model;
21 private boolean selecting;
22 private JComboBox comboBox;
23 private final boolean hidePopupOnFocusLoss;
24 private JTextComponent editor;
25
26 public AutoCompletionComboEditorDocument(final JComboBox comboBox) {
27 this.comboBox = comboBox;
28 this.model = comboBox.getModel();
29 this.editor = (JTextComponent)comboBox.getEditor().getEditorComponent();
30 editor.setDocument(this);
31 comboBox.addActionListener(new ActionListener() {
32 @Override
33 public void actionPerformed(ActionEvent e) {
34 if (!selecting) highlightCompletedText(0);
35 }
36 });
37
38 Object selectedItem = comboBox.getSelectedItem();
39 if (selectedItem!=null) {
40 setText(selectedItem.toString());
41 highlightCompletedText(0);
42 }
43 hidePopupOnFocusLoss = System.getProperty("java.version").startsWith("1.5");
44 editor.addFocusListener(new FocusAdapter() {
45 @Override
46 public void focusLost(FocusEvent e) {
47 if (hidePopupOnFocusLoss) comboBox.setPopupVisible(false);
48 }
49 });
50 }
51
52 @Override
53 public void remove(int offs, int len) throws BadLocationException {
54 if (selecting) return;
55 super.remove(offs, len);
56 }
57
58 @Override
59 public void insertString(int offs, String str, AttributeSet a) throws BadLocationException {
60 if (selecting) return;
61 super.insertString(offs, str, a);
62 Object item = lookupItem(getText(0, getLength()));
63 if (item != null) {
64 setSelectedItem(item);
65 setText(item.toString());
66 highlightCompletedText(offs + str.length());
67 if (comboBox.isDisplayable()) comboBox.setPopupVisible(true);
68 }
69 }
70
71 private void setText(String text) {
72 try {
73 super.remove(0, getLength());
74 super.insertString(0, text, null);
75 } catch (BadLocationException e) {
76 throw new RuntimeException(e);
77 }
78 }
79
80 private void setSelectedItem(Object item) {
81 selecting = true;
82 model.setSelectedItem(item);
83 selecting = false;
84 }
85
86 private void highlightCompletedText(int offs) {
87 JTextComponent editor = (JTextComponent) comboBox.getEditor().getEditorComponent();
88 editor.setSelectionStart(offs);
89 editor.setSelectionEnd(getLength());
90 }
91
92 private Object lookupItem(String pattern) {
93 Object selectedItem = model.getSelectedItem();
94 if (selectedItem != null && startsWithIgnoreCase(selectedItem, pattern)) {
95 return selectedItem;
96 } else {
97 for (int i = 0, n = model.getSize(); i < n; i++) {
98 Object currentItem = model.getElementAt(i);
99 if (startsWithIgnoreCase(currentItem, pattern)) {
100 return currentItem;
101 }
102 }
103 }
104 return null;
105 }
106
107 private boolean startsWithIgnoreCase(Object currentItem, String pattern) {
108 return currentItem.toString().toLowerCase().startsWith(pattern.toLowerCase());
109 }
110
111
112 }