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java自己造编程IDE【3】，对…_java n-ide

作者：我家小花儿 | 2024-08-17 19:10:36

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java n-ide

效果图：

可以看到，终于达到了当时设想的预期，能够真正超越边界的代码提示。当然，目前仅仅用了国家代号作为代码库。基本的判断也是很简单的，就是查看光标前到空格处的文字，是否能在代码库里面搜索到相应的内容。

这次将整个代码提示控件封装成了一个类，用界面编辑器绘制好界面以后，只需要将JEditorPane塞到构造函数里面就可以了，这个类将为JEditorPane添加相应的监听器，捕捉事件，并在相应的时候弹出代码提示框。

下一步考虑如何将判断逻辑抽象出来，毕竟提示什么样的代码，是语言相关的。

import java.awt.Point;

import java.awt.Toolkit;

import java.awt.event.FocusEvent;

import java.awt.event.FocusListener;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.util.ArrayList;

import java.util.Locale;

import java.util.logging.Level;

import java.util.logging.Logger;

import javax.swing.DefaultListModel;

import javax.swing.JEditorPane;

import javax.swing.JList;

import javax.swing.JPopupMenu;

import javax.swing.JScrollPane;

import javax.swing.event.CaretEvent;

import javax.swing.event.CaretListener;

import javax.swing.text.BadLocationException;

import javax.swing.text.Caret;

public class JCodeCompletePopupMenu {

private final JEditorPane jep1;

private DefaultListModel dlm;

private JList jl1;

private JPopupMenu popupMenu;

private final ArrayList<String> items;

private String curtAnalysStr;

private int rate;

public String getCurtAnalysStr() {

return curtAnalysStr;

}

public JCodeCompletePopupMenu(JEditorPane jep1, ArrayList<String> items) {

this.jep1 = jep1;

this.items = items;

initComponent();

}

public JCodeCompletePopupMenu(JEditorPane jep1) {

this.jep1 = jep1;

Locale[] locales = Locale.getAvailableLocales();

items = new ArrayList<>();

for (Locale locale : locales) {

String item = locale.getDisplayName();

items.add(item);

}

initComponent();

}

private void initComponent(){

rate = Toolkit.getDefaultToolkit().getScreenResolution()/288;

dlm = new DefaultListModel();

jl1 = new JList();

jl1.setModel(dlm);

jl1.addFocusListener(new FocusListener(){

@Override

public void focusGained(FocusEvent fe) {

jep1.requestFocus();

}

@Override public void focusLost(FocusEvent fe) {}

});

JScrollPane jsp1=new JScrollPane(jl1);

popupMenu = new JPopupMenu();

popupMenu.add(jsp1);

jep1.addKeyListener(new mKeyListener());

jep1.addCaretListener(new mCaretListener());

}

private class mKeyListener implements KeyListener{

//用于监听所有在文本框的按键指令

@Override public void keyTyped(KeyEvent e) {

}

@Override public void keyPressed(KeyEvent e) {

int keycode = e.getKeyCode();

if(keycode == KeyEvent.VK_DOWN || keycode == KeyEvent.VK_UP){

// 如果输入的上下方向键

if (popupMenu.isShowing()) { //所以增加该窗口是否show的判断

e.setSource(jl1); //设置新的event源

jl1.dispatchEvent(e);//传输给jl1，dispatch: vt. 派遣；分派

}

}else if(keycode == KeyEvent.VK_ENTER){

//System.out.println("e.getKeyCode()=="+e.getKeyCode());

e.setSource(popupMenu);

popupMenu.dispatchEvent(e);

if(popupMenu.isVisible()){

String selectedValue=jl1.getSelectedValue().toString();

System.out.println("Selected Value==" + selectedValue);

int removeWords = getCurtAnalysStr().length();

try {

jep1.getDocument().remove(jep1.getCaretPosition()-removeWords, removeWords);

} catch (BadLocationException ex) {

Logger.getLogger(JCodeCompletePopupMenu.class.getName()).log(Level.SEVERE, null, ex);

}

try {

jep1.getDocument().insertString(jep1.getCaretPosition(), selectedValue, null);

} catch (BadLocationException ex) {

Logger.getLogger(JCodeCompletePopupMenu.class.getName()).log(Level.SEVERE, null, ex);

}

popupMenu.setVisible(false);

}

}else if (e.isControlDown() && e.getKeyCode() == KeyEvent.VK_BACK_SLASH && !popupMenu.isShowing()) {

//按键k开启提示窗口

Caret crt = jep1.getCaret();

Point p = crt.getMagicCaretPosition();

if (p == null) {

} else {

int x = (int)p.getX();

int y = (int)p.getY();

//设置窗体的显示位置，相对于母组件

popupMenu.show(e.getComponent(), x, y+jl1.getFont().getSize());

jl1.setSelectedIndex(0);

//System.out.println(x+" "+y+20);

jep1.requestFocusInWindow();

}

}else{

}

@Override public void keyReleased(KeyEvent e) {

//throw new UnsupportedOperationException("Not supported yet.");

}

private class mCaretListener implements CaretListener{

@Override

public void caretUpdate(CaretEvent ce) {

//该【光标监听器】用于获取光标附近所取得的文本，用于判断和显示提示符

int dotposi = ce.getDot();

Caret crt = jep1.getCaret();

Point p = crt.getMagicCaretPosition();//获取该光标的像素点位置，用于打印

if (p == null) {

//System.out.println(";

} else {

String str = jep1.getText();

// i从光标处的前一个字符开始历遍，直到找到空格

int i = ce.getDot()-1;

str=rmMicroSoftWindowsEnter(str);

for(;i>0;i--){

if(i==0 || str.charAt(i)==' '){

break;

}else if(str.charAt(i)=='\n'){

break;

}

String tmp;

if(dotposi!=0 && i==0){

tmp = str.substring(i, dotposi);

}else if(dotposi!=0 && i!=0){

tmp = str.substring(i+1, dotposi);

}else{

tmp = "";

}

curtAnalysStr=tmp;

if(updateList(tmp)){

p = crt.getMagicCaretPosition();

//crt.get

int x = (int)p.getX();

int y = (int)p.getY();

//设置窗体的显示位置，相对于母组件 30*rate

popupMenu.show(jep1, x, y+jl1.getFont().getSize());

jl1.setSelectedIndex(0);

jep1.requestFocusInWindow();

}else{

popupMenu.setVisible(false);

}

private boolean updateList(String input){

dlm.removeAllElements();

if (!input.isEmpty()) {

items.stream().filter((item) -> (item.toLowerCase().startsWith(input.toLowerCase()))).forEach((item) -> {

dlm.addElement(item);

//dlm.set(5, item);

});

}

return dlm.size()!=0;

}

private void showPopupList(){

}

private String rmMicroSoftWindowsEnter(String str){

String[] strArry = str.split("\r");

int lineCount = strArry.length;

StringBuilder sb = new StringBuilder();

for (String stmp : strArry) {

sb.append(stmp);

}

return sb.toString();

}

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java自己造 编程IDE【3】，对…_java n-ide

java自己造编程IDE【3】，对…_java n-ide