Eclipse 插件开发 5.3 编辑器 监听输入
Eclipse 插件开发 5.3 编辑器监 听输入
- 1 插件配置
- 2 添加监听
- 3 查看效果
Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: Click1
Bundle-SymbolicName: com.xu.click1;singleton:=true
Bundle-Version: 1.0.0
Bundle-Activator: com.xu.click1.Activator
Bundle-Vendor: XU
Require-Bundle: org.eclipse.ui,org.eclipse.core.runtime,org.eclipse.ui.editors,org.eclipse.ui.workbench.texteditor,org.eclipse.core.resources,org.eclipse.text
Bundle-RequiredExecutionEnvironment: JavaSE-24
Automatic-Module-Name: com.xu.click1
Bundle-ActivationPolicy: lazy
org.eclipse.ui.IStartup 是 Eclipse 插件开发中用于在 工作台启动时自动执行代码 的接口。
org.eclipse.ui.IStartup 适用于以下场景：
1、启动时注册监听器（如监听编辑器、视图、资源等）
2、启动时预加载某些资源或服务
3、提前初始化你的插件逻辑
4、注册全局快捷键、UI 元素等
IStartup 注意事项
| 注意点 | 说明 |
|---|---|
| UI 操作必须放在 UI 线程中 | 使用 Display.getDefault().asyncExec(...) |
插件必须在 plugin.xml 中注册扩展点 | 否则 earlyStartup() 不会执行 |
不要阻塞 earlyStartup() | 否则会影响 Eclipse 启动速度 |
IStartup 常见用途示例
| 用途 | 说明 |
|---|---|
| 自动附加文档监听器 | 监听所有打开的 ITextEditor 并获取实时输入 |
| 注册资源监听器 | 监听项目、文件变化 |
| 注册窗口、视图、编辑器监听器 | 管理 UI 生命周期 |
| 初始化日志系统、缓存等 | 提前准备插件运行环境 |
1 插件配置
<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin><extension point="org.eclipse.ui.startup"><startup class="com.xu.click1.StartupListener" /></extension></plugin>
2 添加监听
package com.xu.click1;import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IStartup;import com.xu.edit.EditUtil;public class StartupListener implements IStartup {@Overridepublic void earlyStartup() {Display.getDefault().asyncExec(() -> {new EditUtil().addEditListener();});}}
package com.xu.edit;import org.eclipse.jface.text.DocumentEvent;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IDocumentListener;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IPartListener2;
import org.eclipse.ui.IPartService;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchPartReference;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditor;public class EditUtil {public void addEditListener() {IWorkbench workbench = PlatformUI.getWorkbench();oldEditListener(workbench);newEditListener(workbench);}private void oldEditListener(IWorkbench workbench) {if (null == workbench) {return;}IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();if (null == window) {return;}IWorkbenchPage page = window.getActivePage();if (null == page) {return;}for (IEditorReference ref : page.getEditorReferences()) {IEditorPart editor = ref.getEditor(true);if (null == editor) {continue;}addListener((ITextEditor) editor);}}private void addListener(ITextEditor editor) {if (null == editor) {return;}IDocumentProvider provider = editor.getDocumentProvider();IDocument document = provider.getDocument(editor.getEditorInput());document.addDocumentListener(new IDocumentListener() {@Overridepublic void documentAboutToBeChanged(DocumentEvent arg0) {// TODO Auto-generated method stub}@Overridepublic void documentChanged(DocumentEvent arg0) {// TODO Auto-generated method stubSystem.out.println(String.format("%s:%s", arg0.getOffset(), arg0.getText()));}});}private void newEditListener(IWorkbench workbench) {if (null == workbench) {return;}for (IWorkbenchWindow window : workbench.getWorkbenchWindows()) {if (window == null) {continue;}IPartService service = window.getPartService();if (null == service) {continue;}service.addPartListener(new IPartListener2() {@Overridepublic void partOpened(IWorkbenchPartReference partRef) {IWorkbenchPart part = partRef.getPart(false);if (part instanceof ITextEditor) {addListener((ITextEditor) part);}}});}}}
3 查看效果
