Javaにドロップダウンリストを使用してオートコンプリートテキストボックスを作成します
各キーリリースイベントでデータベースを照会する自動提案テキストボックスを作成します。その部分は簡単ですが、素敵なビジュアルを提供したいと思います。 Facebookでの検索など、Webサイトで表示される自動提案テキストボックスに似たもの。
そのようなインターフェースを作るには？
素朴なアイデアは、テキストボックスのすぐ下にJListを配置し、それを見つけたときに結果を表示するように設定することです。
より良いアイデアやそれを行う標準的な方法はありますか？
@ syb0rgの答えは、サードパーティのライブラリを使用しているため、簡単です。
ただし、別のアプローチを使用しました。
AutoSuggestor、そのJTextFieldおよび_ArrayList<String>_を受け入れるWindowというカスタムクラスを使用して、入力された単語、背景色、テキスト色をチェックします。提案フォーカス色と不透明度の値。 JTextField参照を渡すことでDocumentListenerが追加され、Wordの入力内容、候補を表示するかどうか、表示する場合はどの候補を表示するかを確認します。 Wordが入力されると、DocumentListenerは、入力されている現在のWordまたは（少なくともWordがどれだけ入力されたか）wordTyped(String wordTyped)で、wordTyped(..)メソッドを起動します。 WordはAutoSuggestorsクラスのものと照合されます辞書これは基本的なArrayList of Stringです。以下の例では：
（今のところ、マウスを使用して、オートコンプリートするWordをクリックするか、 DOWN 横方向の提案とtextfieldに ENTER downキーを使用して移動するときに提案を選択します。まだ実装していません UP まだ）：
_import Java.awt.Color;
import Java.awt.Dimension;
import Java.awt.GridLayout;
import Java.awt.Window;
import Java.awt.event.ActionEvent;
import Java.awt.event.KeyEvent;
import Java.awt.event.MouseAdapter;
import Java.awt.event.MouseEvent;
import Java.util.ArrayList;
import javax.swing.AbstractAction;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JWindow;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
import javax.swing.border.LineBorder;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
/**
* @author David
*/
public class Test {
public Test() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JTextField f = new JTextField(10);
AutoSuggestor autoSuggestor = new AutoSuggestor(f, frame, null, Color.WHITE.brighter(), Color.BLUE, Color.RED, 0.75f) {
@Override
boolean wordTyped(String typedWord) {
//create list for dictionary this in your case might be done via calling a method which queries db and returns results as arraylist
ArrayList<String> words = new ArrayList<>();
words.add("hello");
words.add("heritage");
words.add("happiness");
words.add("goodbye");
words.add("cruel");
words.add("car");
words.add("war");
words.add("will");
words.add("world");
words.add("wall");
setDictionary(words);
//addToDictionary("bye");//adds a single Word
return super.wordTyped(typedWord);//now call super to check for any matches against newest dictionary
}
};
JPanel p = new JPanel();
p.add(f);
frame.add(p);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new Test();
}
});
}
}
class AutoSuggestor {
private final JTextField textField;
private final Window container;
private JPanel suggestionsPanel;
private JWindow autoSuggestionPopUpWindow;
private String typedWord;
private final ArrayList<String> dictionary = new ArrayList<>();
private int currentIndexOfSpace, tW, tH;
private DocumentListener documentListener = new DocumentListener() {
@Override
public void insertUpdate(DocumentEvent de) {
checkForAndShowSuggestions();
}
@Override
public void removeUpdate(DocumentEvent de) {
checkForAndShowSuggestions();
}
@Override
public void changedUpdate(DocumentEvent de) {
checkForAndShowSuggestions();
}
};
private final Color suggestionsTextColor;
private final Color suggestionFocusedColor;
public AutoSuggestor(JTextField textField, Window mainWindow, ArrayList<String> words, Color popUpBackground, Color textColor, Color suggestionFocusedColor, float opacity) {
this.textField = textField;
this.suggestionsTextColor = textColor;
this.container = mainWindow;
this.suggestionFocusedColor = suggestionFocusedColor;
this.textField.getDocument().addDocumentListener(documentListener);
setDictionary(words);
typedWord = "";
currentIndexOfSpace = 0;
tW = 0;
tH = 0;
autoSuggestionPopUpWindow = new JWindow(mainWindow);
autoSuggestionPopUpWindow.setOpacity(opacity);
suggestionsPanel = new JPanel();
suggestionsPanel.setLayout(new GridLayout(0, 1));
suggestionsPanel.setBackground(popUpBackground);
addKeyBindingToRequestFocusInPopUpWindow();
}
private void addKeyBindingToRequestFocusInPopUpWindow() {
textField.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0, true), "Down released");
textField.getActionMap().put("Down released", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent ae) {//focuses the first label on popwindow
for (int i = 0; i < suggestionsPanel.getComponentCount(); i++) {
if (suggestionsPanel.getComponent(i) instanceof SuggestionLabel) {
((SuggestionLabel) suggestionsPanel.getComponent(i)).setFocused(true);
autoSuggestionPopUpWindow.toFront();
autoSuggestionPopUpWindow.requestFocusInWindow();
suggestionsPanel.requestFocusInWindow();
suggestionsPanel.getComponent(i).requestFocusInWindow();
break;
}
}
}
});
suggestionsPanel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0, true), "Down released");
suggestionsPanel.getActionMap().put("Down released", new AbstractAction() {
int lastFocusableIndex = 0;
@Override
public void actionPerformed(ActionEvent ae) {//allows scrolling of labels in pop window (I know very hacky for now :))
ArrayList<SuggestionLabel> sls = getAddedSuggestionLabels();
int max = sls.size();
if (max > 1) {//more than 1 suggestion
for (int i = 0; i < max; i++) {
SuggestionLabel sl = sls.get(i);
if (sl.isFocused()) {
if (lastFocusableIndex == max - 1) {
lastFocusableIndex = 0;
sl.setFocused(false);
autoSuggestionPopUpWindow.setVisible(false);
setFocusToTextField();
checkForAndShowSuggestions();//fire method as if document listener change occured and fired it
} else {
sl.setFocused(false);
lastFocusableIndex = i;
}
} else if (lastFocusableIndex <= i) {
if (i < max) {
sl.setFocused(true);
autoSuggestionPopUpWindow.toFront();
autoSuggestionPopUpWindow.requestFocusInWindow();
suggestionsPanel.requestFocusInWindow();
suggestionsPanel.getComponent(i).requestFocusInWindow();
lastFocusableIndex = i;
break;
}
}
}
} else {//only a single suggestion was given
autoSuggestionPopUpWindow.setVisible(false);
setFocusToTextField();
checkForAndShowSuggestions();//fire method as if document listener change occured and fired it
}
}
});
}
private void setFocusToTextField() {
container.toFront();
container.requestFocusInWindow();
textField.requestFocusInWindow();
}
public ArrayList<SuggestionLabel> getAddedSuggestionLabels() {
ArrayList<SuggestionLabel> sls = new ArrayList<>();
for (int i = 0; i < suggestionsPanel.getComponentCount(); i++) {
if (suggestionsPanel.getComponent(i) instanceof SuggestionLabel) {
SuggestionLabel sl = (SuggestionLabel) suggestionsPanel.getComponent(i);
sls.add(sl);
}
}
return sls;
}
private void checkForAndShowSuggestions() {
typedWord = getCurrentlyTypedWord();
suggestionsPanel.removeAll();//remove previos words/jlabels that were added
//used to calcualte size of JWindow as new Jlabels are added
tW = 0;
tH = 0;
boolean added = wordTyped(typedWord);
if (!added) {
if (autoSuggestionPopUpWindow.isVisible()) {
autoSuggestionPopUpWindow.setVisible(false);
}
} else {
showPopUpWindow();
setFocusToTextField();
}
}
protected void addWordToSuggestions(String Word) {
SuggestionLabel suggestionLabel = new SuggestionLabel(Word, suggestionFocusedColor, suggestionsTextColor, this);
calculatePopUpWindowSize(suggestionLabel);
suggestionsPanel.add(suggestionLabel);
}
public String getCurrentlyTypedWord() {//get newest Word after last white spaceif any or the first Word if no white spaces
String text = textField.getText();
String wordBeingTyped = "";
if (text.contains(" ")) {
int tmp = text.lastIndexOf(" ");
if (tmp >= currentIndexOfSpace) {
currentIndexOfSpace = tmp;
wordBeingTyped = text.substring(text.lastIndexOf(" "));
}
} else {
wordBeingTyped = text;
}
return wordBeingTyped.trim();
}
private void calculatePopUpWindowSize(JLabel label) {
//so we can size the JWindow correctly
if (tW < label.getPreferredSize().width) {
tW = label.getPreferredSize().width;
}
tH += label.getPreferredSize().height;
}
private void showPopUpWindow() {
autoSuggestionPopUpWindow.getContentPane().add(suggestionsPanel);
autoSuggestionPopUpWindow.setMinimumSize(new Dimension(textField.getWidth(), 30));
autoSuggestionPopUpWindow.setSize(tW, tH);
autoSuggestionPopUpWindow.setVisible(true);
int windowX = 0;
int windowY = 0;
windowX = container.getX() + textField.getX() + 5;
if (suggestionsPanel.getHeight() > autoSuggestionPopUpWindow.getMinimumSize().height) {
windowY = container.getY() + textField.getY() + textField.getHeight() + autoSuggestionPopUpWindow.getMinimumSize().height;
} else {
windowY = container.getY() + textField.getY() + textField.getHeight() + autoSuggestionPopUpWindow.getHeight();
}
autoSuggestionPopUpWindow.setLocation(windowX, windowY);
autoSuggestionPopUpWindow.setMinimumSize(new Dimension(textField.getWidth(), 30));
autoSuggestionPopUpWindow.revalidate();
autoSuggestionPopUpWindow.repaint();
}
public void setDictionary(ArrayList<String> words) {
dictionary.clear();
if (words == null) {
return;//so we can call constructor with null value for dictionary without exception thrown
}
for (String Word : words) {
dictionary.add(Word);
}
}
public JWindow getAutoSuggestionPopUpWindow() {
return autoSuggestionPopUpWindow;
}
public Window getContainer() {
return container;
}
public JTextField getTextField() {
return textField;
}
public void addToDictionary(String Word) {
dictionary.add(Word);
}
boolean wordTyped(String typedWord) {
if (typedWord.isEmpty()) {
return false;
}
//System.out.println("Typed Word: " + typedWord);
boolean suggestionAdded = false;
for (String Word : dictionary) {//get words in the dictionary which we added
boolean fullymatches = true;
for (int i = 0; i < typedWord.length(); i++) {//each string in the Word
if (!typedWord.toLowerCase().startsWith(String.valueOf(Word.toLowerCase().charAt(i)), i)) {//check for match
fullymatches = false;
break;
}
}
if (fullymatches) {
addWordToSuggestions(Word);
suggestionAdded = true;
}
}
return suggestionAdded;
}
}
class SuggestionLabel extends JLabel {
private boolean focused = false;
private final JWindow autoSuggestionsPopUpWindow;
private final JTextField textField;
private final AutoSuggestor autoSuggestor;
private Color suggestionsTextColor, suggestionBorderColor;
public SuggestionLabel(String string, final Color borderColor, Color suggestionsTextColor, AutoSuggestor autoSuggestor) {
super(string);
this.suggestionsTextColor = suggestionsTextColor;
this.autoSuggestor = autoSuggestor;
this.textField = autoSuggestor.getTextField();
this.suggestionBorderColor = borderColor;
this.autoSuggestionsPopUpWindow = autoSuggestor.getAutoSuggestionPopUpWindow();
initComponent();
}
private void initComponent() {
setFocusable(true);
setForeground(suggestionsTextColor);
addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent me) {
super.mouseClicked(me);
replaceWithSuggestedText();
autoSuggestionsPopUpWindow.setVisible(false);
}
});
getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, true), "Enter released");
getActionMap().put("Enter released", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent ae) {
replaceWithSuggestedText();
autoSuggestionsPopUpWindow.setVisible(false);
}
});
}
public void setFocused(boolean focused) {
if (focused) {
setBorder(new LineBorder(suggestionBorderColor));
} else {
setBorder(null);
}
repaint();
this.focused = focused;
}
public boolean isFocused() {
return focused;
}
private void replaceWithSuggestedText() {
String suggestedWord = getText();
String text = textField.getText();
String typedWord = autoSuggestor.getCurrentlyTypedWord();
String t = text.substring(0, text.lastIndexOf(typedWord));
String tmp = t + text.substring(text.lastIndexOf(typedWord)).replace(typedWord, suggestedWord);
textField.setText(tmp + " ");
}
}
_現時点で必要な追加機能はIMOのみです。
- UP ポップアップ自動提案ボックス内の項目のフォーカストラバーサビリティにより、上方向に進むことができます。
よじれがあれば、私に何ができるかがわかります。しかし、正常に実行されているようです（木に触れる）。
これを行う簡単な方法は、オートコンプリートのGlazedList実装を使用することです。起動して実行するのは非常に簡単です。あなたはそれを見つけることができます こちら 。
次のように、Glazedコードを1行だけ使用して、オートコンプリートをJComboBoxにインストールできます。
_JComboBox comboBox = new JComboBox();
Object[] elements = new Object[] {"Cat", "Dog", "Lion", "Mouse"};
AutoCompleteSupport.install(comboBox, GlazedLists.eventListOf(elements));
_また、SwingXはオートコンプリートをサポートしており、GlazedListよりも使いやすいかもしれません。 SwingXで書くのはAutoCompleteDecorator.decorate(comboBox);だけです
TextAutoCompleterクラスを使用するには、jarファイルAutoCompleter.jarをダウンロードし、プロジェクトのライブラリフォルダーに追加する必要があります。ダウンロードするリンクは次のとおりです。 http://download1689.mediafire.com/4grrthscpsug/7pwzgefiomu392o/AutoCompleter .jar -Nawin
// Mainクラスで次のコードを記述します
package autocomplete;
import com.mxrck.autocompleter.TextAutoCompleter;
import Java.sql.SQLException;
import javax.swing.JFrame;
import javax.swing.JTextField;
public class AutoComplete {
JFrame f=new JFrame();
JTextField t1;
AutoComplete() throws ClassNotFoundException, SQLException{
f.setSize(500,500);
f.setLocation(500,100);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setLayout(null);
f.setVisible(true);
t1=new JTextField();
t1.setBounds(50,80,200,20);
f.add(t1);
TextAutoCompleter complete=new TextAutoCompleter(t1);
DBConn conn=new DBConn();
conn.connection();
conn.retrieve();
while(conn.rs.next()){
complete.addItem(conn.rs.getString("number"));
}
}
public static void main(String[] args) throws ClassNotFoundException,
SQLException{
new AutoComplete();
}
}
//Create seperate class for database connection and write the following code
package autocomplete;
import Java.sql.Connection;
import Java.sql.DriverManager;
import Java.sql.PreparedStatement;
import Java.sql.ResultSet;
import Java.sql.SQLException;
import Java.sql.Statement;
public class DBConn {
Connection con; ResultSet rs;PreparedStatement stat;
public void connection() throws ClassNotFoundException, SQLException{
String url="jdbc:mysql://localhost:3306/";
String driver="com.mysql.jdbc.Driver";
String db="demo";
String username="root";
String password="root";
stat =null;
Class.forName(driver);
con=(Connection)DriverManager.getConnection
(url+db,username,password);
System.out.println("Connecttion SuccessFul");
}
public void retrieve() throws SQLException{
Statement stmt=con.createStatement();
String query="select number from phone";
rs = stmt.executeQuery(query);
System.out.println("retrieve succesfully");
}
}
の機能を追加しました UP キーと同様に追加された機能 ESC ポップアップウィンドウを非表示にするためのキー。それに加えて、リストから提案が選択されたときに呼び出されるAutoSuggestorオブジェクトの作成時にコールバック関数を指定できます。
import javax.swing.border.LineBorder
import Java.util.ArrayList
import javax.swing.event.DocumentListener
import Java.awt.*
import Java.awt.event.*
import javax.swing.*
import javax.swing.event.DocumentEvent
/**
* Author of the original version: David @ https://stackoverflow.com/users/1133011/david-kroukamp
*/
class Test {
init {
val frame = JFrame()
frame.defaultCloseOperation = JFrame.EXIT_ON_CLOSE
val f = JTextField(10)
val autoSuggestor = object : AutoSuggestor(f, frame, ArrayList(), Color.WHITE.brighter(), Color.BLUE, Color.RED, 0.75f) {
override fun wordTyped(typedWord: String?): Boolean {
//create list for dictionary this in your case might be done via calling a method which queries db and returns results as arraylist
val words = ArrayList<String>()
words.add("hello")
words.add("heritage")
words.add("happiness")
words.add("goodbye")
words.add("cruel")
words.add("car")
words.add("war")
words.add("will")
words.add("world")
words.add("wall")
setDictionary(words)
//addToDictionary("bye");//adds a single Word
return super.wordTyped(typedWord)//now call super to check for any matches against newest dictionary
}
}
val p = JPanel()
p.add(f)
frame.add(p)
frame.pack()
frame.isVisible = true
}
companion object {
@JvmStatic
fun main(args: Array<String>) {
SwingUtilities.invokeLater { Test() }
}
}
}
internal open class AutoSuggestor(val textField: JTextField, val container: Window, words: ArrayList<String>, popUpBackground: Color, private val suggestionsTextColor: Color, private val suggestionFocusedColor: Color, opacity: Float, private val callback: (String) -> Unit = {}) {
private val suggestionsPanel: JPanel
val autoSuggestionPopUpWindow: JWindow
private var typedWord: String? = null
private val dictionary = ArrayList<String>()
private var currentIndexOfSpace: Int = 0
private var tW: Int = 0
private var tH: Int = 0
private val documentListener = object : DocumentListener {
override fun insertUpdate(de: DocumentEvent) {
checkForAndShowSuggestions()
}
override fun removeUpdate(de: DocumentEvent) {
checkForAndShowSuggestions()
}
override fun changedUpdate(de: DocumentEvent) {
checkForAndShowSuggestions()
}
}
val addedSuggestionLabels: ArrayList<SuggestionLabel>
get() {
val sls = ArrayList<SuggestionLabel>()
for (i in 0 until suggestionsPanel.componentCount) {
if (suggestionsPanel.getComponent(i) is SuggestionLabel) {
val sl = suggestionsPanel.getComponent(i) as SuggestionLabel
sls.add(sl)
}
}
return sls
}
//get newest Word after last white space if any or the first Word if no white spaces
val currentlyTypedWord: String
get() {
val text = textField.text
var wordBeingTyped = ""
if (text.contains(" ")) {
val tmp = text.lastIndexOf(" ")
if (tmp >= currentIndexOfSpace) {
currentIndexOfSpace = tmp
wordBeingTyped = text.substring(text.lastIndexOf(" "))
}
} else {
wordBeingTyped = text
}
return wordBeingTyped.trim { it <= ' ' }
}
init {
this.textField.document.addDocumentListener(documentListener)
setDictionary(words)
typedWord = ""
currentIndexOfSpace = 0
tW = 0
tH = 0
autoSuggestionPopUpWindow = JWindow(container)
autoSuggestionPopUpWindow.opacity = opacity
suggestionsPanel = JPanel()
suggestionsPanel.layout = GridLayout(0, 1)
suggestionsPanel.background = popUpBackground
addFocusListenersToHandleVisibilityOfPopUpWindow()
addKeyBindingToRequestFocusInPopUpWindow()
}
private fun addFocusListenersToHandleVisibilityOfPopUpWindow() {
textField.addFocusListener(object:FocusListener {
override fun focusLost(e: FocusEvent?) {
var focusOnPopUp = false
for (i in 0 until suggestionsPanel.componentCount) {
if (suggestionsPanel.getComponent(i) is SuggestionLabel) {
val label = suggestionsPanel.getComponent(i) as SuggestionLabel
if (label.isFocused)
focusOnPopUp = true
}
}
if (!focusOnPopUp && !shouldShowPopUpWindow) {
autoSuggestionPopUpWindow.isVisible = false
}
}
override fun focusGained(e: FocusEvent?) {
shouldShowPopUpWindow = false
}
})
}
private fun addKeyBindingToRequestFocusInPopUpWindow() {
textField.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0, true), "Escape released")
textField.actionMap.put("Escape released", object : AbstractAction() {
override fun actionPerformed(ae: ActionEvent) {// Hide the popwindow
shouldShowPopUpWindow = false
autoSuggestionPopUpWindow.isVisible = false
}
})
textField.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0, true), "Down released")
textField.actionMap.put("Down released", object : AbstractAction() {
override fun actionPerformed(ae: ActionEvent) {//focuses the first label on popwindow
for (i in 0 until suggestionsPanel.componentCount) {
if (suggestionsPanel.getComponent(i) is SuggestionLabel) {
(suggestionsPanel.getComponent(i) as SuggestionLabel).isFocused = true
autoSuggestionPopUpWindow.toFront()
autoSuggestionPopUpWindow.requestFocusInWindow()
suggestionsPanel.requestFocusInWindow()
suggestionsPanel.getComponent(i).requestFocusInWindow()
break
}
}
}
})
textField.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0, true), "Up released")
textField.actionMap.put("Up released", object : AbstractAction() {
override fun actionPerformed(ae: ActionEvent) {//focuses the last label on popwindow
for (i in 0 until suggestionsPanel.componentCount) {
val reverseIndex = suggestionsPanel.componentCount-1 - i
if (suggestionsPanel.getComponent(reverseIndex) is SuggestionLabel) {
(suggestionsPanel.getComponent(reverseIndex) as SuggestionLabel).isFocused = true
autoSuggestionPopUpWindow.toFront()
autoSuggestionPopUpWindow.requestFocusInWindow()
suggestionsPanel.requestFocusInWindow()
suggestionsPanel.getComponent(reverseIndex).requestFocusInWindow()
break
}
}
}
})
suggestionsPanel.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0, true), "Escape released")
suggestionsPanel.actionMap.put("Escape released", object : AbstractAction() {
override fun actionPerformed(ae: ActionEvent) {// Hide the popwindow
shouldShowPopUpWindow = false
autoSuggestionPopUpWindow.isVisible = false
}
})
suggestionsPanel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0, true), "Up released")
suggestionsPanel.actionMap.put("Up released", object : AbstractAction() {
override fun actionPerformed(ae: ActionEvent) {//allows scrolling of labels in pop window (I know very hacky for now :))
val sls = addedSuggestionLabels
val max = sls.size
var indexOfFocusedSuggestion = -1
for (i in 0 until max) {
val sl = sls[i]
if ( sl.isFocused )
indexOfFocusedSuggestion = i
}
if (indexOfFocusedSuggestion - 1 < 0) {
sls[indexOfFocusedSuggestion].isFocused = false
autoSuggestionPopUpWindow.isVisible = false
setFocusToTextField()
checkForAndShowSuggestions()//fire method as if document listener change occured and fired it
}
else {
sls[indexOfFocusedSuggestion].isFocused = false
sls[indexOfFocusedSuggestion-1].isFocused = true
autoSuggestionPopUpWindow.toFront()
autoSuggestionPopUpWindow.requestFocusInWindow()
suggestionsPanel.requestFocusInWindow()
suggestionsPanel.getComponent(indexOfFocusedSuggestion-1).requestFocusInWindow()
}
}
})
suggestionsPanel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0, true), "Down released")
suggestionsPanel.actionMap.put("Down released", object : AbstractAction() {
override fun actionPerformed(ae: ActionEvent) {//allows scrolling of labels in pop window (I know very hacky for now :))
val sls = addedSuggestionLabels
val max = sls.size
var indexOfFocusedSuggestion = -1
for (i in 0 until max) {
val sl = sls[i]
if ( sl.isFocused )
indexOfFocusedSuggestion = i
}
if (indexOfFocusedSuggestion + 1 >= max) {
sls[indexOfFocusedSuggestion].isFocused = false
autoSuggestionPopUpWindow.isVisible = false
setFocusToTextField()
checkForAndShowSuggestions()//fire method as if document listener change occured and fired it
}
else {
sls[indexOfFocusedSuggestion].isFocused = false
sls[indexOfFocusedSuggestion+1].isFocused = true
autoSuggestionPopUpWindow.toFront()
autoSuggestionPopUpWindow.requestFocusInWindow()
suggestionsPanel.requestFocusInWindow()
suggestionsPanel.getComponent(indexOfFocusedSuggestion+1).requestFocusInWindow()
}
}
})
}
private fun setFocusToTextField() {
container.toFront()
container.requestFocusInWindow()
textField.requestFocusInWindow()
}
var shouldShowPopUpWindow = false
private fun checkForAndShowSuggestions() {
typedWord = currentlyTypedWord
suggestionsPanel.removeAll()//remove previos words/jlabels that were added
//used to calcualte size of JWindow as new Jlabels are added
tW = 0
tH = 0
val added = wordTyped(typedWord)
if (!added) {
if (autoSuggestionPopUpWindow.isVisible) {
autoSuggestionPopUpWindow.isVisible = false
}
} else {
shouldShowPopUpWindow = true
showPopUpWindow()
setFocusToTextField()
}
}
protected fun addWordToSuggestions(Word: String) {
val suggestionLabel = SuggestionLabel(Word, suggestionFocusedColor, suggestionsTextColor, this, callback)
calculatePopUpWindowSize(suggestionLabel)
suggestionsPanel.add(suggestionLabel)
}
private fun calculatePopUpWindowSize(label: JLabel) {
//so we can size the JWindow correctly
if (tW < label.preferredSize.width) {
tW = label.preferredSize.width
}
tH += label.preferredSize.height
}
private fun showPopUpWindow() {
autoSuggestionPopUpWindow.contentPane.add(suggestionsPanel)
autoSuggestionPopUpWindow.minimumSize = Dimension(textField.width, 30)
autoSuggestionPopUpWindow.setSize(tW, tH)
autoSuggestionPopUpWindow.isVisible = true
var windowX = 0
var windowY = 0
windowX = container.getX() + textField.x + 5
if (suggestionsPanel.height > autoSuggestionPopUpWindow.minimumSize.height) {
windowY = container.getY() + textField.y + textField.height + autoSuggestionPopUpWindow.minimumSize.height
} else {
windowY = container.getY() + textField.y + textField.height + autoSuggestionPopUpWindow.height
}
autoSuggestionPopUpWindow.setLocation(windowX, windowY)
autoSuggestionPopUpWindow.minimumSize = Dimension(textField.width, 30)
autoSuggestionPopUpWindow.revalidate()
autoSuggestionPopUpWindow.repaint()
}
fun setDictionary(words: ArrayList<String>?) {
dictionary.clear()
if (words == null) {
return //so we can call constructor with null value for dictionary without exception thrown
}
for (Word in words) {
dictionary.add(Word)
}
}
fun addToDictionary(Word: String) {
dictionary.add(Word)
}
open fun wordTyped(typedWord: String?): Boolean {
if (typedWord!!.isEmpty()) {
return false
}
var suggestionAdded = false
for (Word in dictionary) {//get words in the dictionary which we added
var fullyMatches = Word.length >= typedWord.length
for (i in 0 until typedWord.length) {//each string in the Word
if (Word.length > i && !typedWord.toLowerCase().startsWith(Word.toLowerCase()[i].toString(), i)) {//check for match
fullyMatches = false
break
}
}
if (fullyMatches) {
addWordToSuggestions(Word)
suggestionAdded = true
}
}
return suggestionAdded
}
}
internal class SuggestionLabel(string: String, private val suggestionBorderColor: Color, private val suggestionsTextColor: Color, private val autoSuggestor: AutoSuggestor, private val callback: (String) -> Unit) : JLabel(string) {
var isFocused = false
set(focused) {
if (focused) {
border = LineBorder(suggestionBorderColor)
} else {
border = null
}
repaint()
field = focused
}
private val autoSuggestionsPopUpWindow: JWindow
private val textField: JTextField
init {
this.textField = autoSuggestor.textField
this.autoSuggestionsPopUpWindow = autoSuggestor.autoSuggestionPopUpWindow
initComponent()
}
private fun initComponent() {
isFocusable = true
foreground = suggestionsTextColor
addMouseListener(object : MouseAdapter() {
override fun mouseClicked(me: MouseEvent) {
super.mouseClicked(me)
replaceWithSuggestedText()
autoSuggestionsPopUpWindow.isVisible = false
}
})
getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, true), "Enter released")
actionMap.put("Enter released", object : AbstractAction() {
override fun actionPerformed(ae: ActionEvent) {
replaceWithSuggestedText()
autoSuggestionsPopUpWindow.isVisible = false
}
})
getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0, true), "Escape released")
actionMap.put("Escape released", object : AbstractAction() {
override fun actionPerformed(ae: ActionEvent) {// Hide the popwindow
autoSuggestionsPopUpWindow.isVisible = false
}
})
}
private fun replaceWithSuggestedText() {
val suggestedWord = text
val text = textField.text
val typedWord = autoSuggestor.currentlyTypedWord
val t = text.substring(0, text.lastIndexOf(typedWord))
val tmp = t + text.substring(text.lastIndexOf(typedWord)).replace(typedWord, suggestedWord)
textField.text = tmp
callback(tmp)
}
}
注：上記はKotlinで記述されていますが、本当にJavaコードが必要な場合は、簡単に Javaに戻す にできます。
AVRアセンブラーでエディターの自動補完が必要でしたIDE so 実装を作成しました Eclipseの自動補完と同様に機能します（CTRL-SPACEアクティベーション、スクロールバー付きのドロップダウンリスト、カーソルキー+マウスナビゲーション）外部依存関係はなく、単一のクラスです。すべてのJTextComponentサブクラスで機能するはずです;使用例はsrc/testフォルダーにあります。
プロジェクトで使用した作業方法は、JComboBoxの上にJTextFieldを配置し、ドキュメントリスナーを使用してJTextFieldに入力するときに、基になるコンボボックスを開くことでした。おそらく、カスタムモデルを使用してアイテムをより効率的に変更できるようにする必要があります。既定のモデルでは、パフォーマンスが低下する可能性があるアイテムは一度に1つずつしか追加できません。コンボボックスを開くには、UIを取得した場合に表示する方法があると思います。開いているときにアイテムを変更しようとしたときに、スクロールでいくつかのバグに遭遇したため、アイテムを閉じて、アイテムを変更してから再表示する必要があります。キーボードの場合は、JTextFieldでキーボードのキーを押して、JComboBoxを適切に呼び出すことができます。
uPキーを実装するには、この行を最初の回答のプライベートvoid addKeyBindingToRequestFocusInPopUpWindow（）に追加します。彼の答えは完璧です。
//here I have to do my code for up key
//---------------------------------------------------------------------
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
textField.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0, true), "Up released");
textField.getActionMap().put("Up released", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent ae) {//focuses the first label on popwindow
for (int i = suggestionsPanel.getComponentCount()-1; i >=0; i--) {
if (suggestionsPanel.getComponent(i) instanceof SuggestionLabel) {
((SuggestionLabel) suggestionsPanel.getComponent(i)).setFocused(true);
autoSuggestionPopUpWindow.toFront();
autoSuggestionPopUpWindow.requestFocusInWindow();
suggestionsPanel.requestFocusInWindow();
suggestionsPanel.getComponent(i).requestFocusInWindow();
break;
}
}
}
});
suggestionsPanel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0, true), "Up released");
suggestionsPanel.getActionMap().put("Up released", new AbstractAction() {
//######int lastFocusableIndex = 0;
int lastFocusableIndex = 0;
//lastFocusableIndex=lastFocusableIndex___;
@Override
public void actionPerformed(ActionEvent ae) {//allows scrolling of labels in pop window (I know very hacky for now :))
ArrayList<SuggestionLabel> sls = getAddedSuggestionLabels();
int max = sls.size();
lastFocusableIndex=lastFocusableIndex___;
System.out.println("UP UP UP UP");//***//
System.out.println("max = "+String.valueOf(max));//***//
System.out.println("lastFocusableIndex = "+String.valueOf(lastFocusableIndex));//***//
System.out.println("UP UP UP UP");//***//
if (max > 1) {//more than 1 suggestion
for (int i = max-1; i >=0; i--) {
SuggestionLabel sl = sls.get(i);
if (sl.isFocused()) {
if (lastFocusableIndex == 0) {
lastFocusableIndex = max - 1;
lastFocusableIndex___=lastFocusableIndex;
sl.setFocused(false);
autoSuggestionPopUpWindow.setVisible(false);
setFocusToTextField();
checkForAndShowSuggestions();//fire method as if document listener change occured and fired it
} else {
sl.setFocused(false);
lastFocusableIndex = i;
lastFocusableIndex___=lastFocusableIndex;
}
} else if (lastFocusableIndex > i) {
if (i < max ) {
sl.setFocused(true);
autoSuggestionPopUpWindow.toFront();
autoSuggestionPopUpWindow.requestFocusInWindow();
suggestionsPanel.requestFocusInWindow();
suggestionsPanel.getComponent(i).requestFocusInWindow();
lastFocusableIndex = i;
lastFocusableIndex___=lastFocusableIndex;
break;
}
}
}
} else {//only a single suggestion was given
autoSuggestionPopUpWindow.setVisible(false);
setFocusToTextField();
checkForAndShowSuggestions();//fire method as if document listener change occured and fired it
}
}
});