Eclipse 插件开发 5.2 编辑器 获取当前编辑器

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

1 获取活跃编辑器

在 Eclipse RCP 插件开发中，获取编辑区（Editor）及其内容、判断当前活跃的编辑器，需要使用 Eclipse Platform 提供的 API，特别是 IWorkbench, IWorkbenchWindow, IWorkbenchPage, IEditorPart 等接口。

package com.xu.click1.handlers;import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditor;public class SampleHandler extends AbstractHandler {@Overridepublic Object execute(ExecutionEvent event) throws ExecutionException {IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();IEditorPart part = page.getActiveEditor();if (part instanceof ITextEditor) {ITextEditor editor = (ITextEditor) part;IDocumentProvider provider = editor.getDocumentProvider();IDocument document = provider.getDocument(editor.getEditorInput());System.out.println(String.format("%s:%s", editor.getTitle(), document.get()));}return null;}}

2 获取全部编辑器

package com.xu.click1.handlers;import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditor;public class SampleHandler extends AbstractHandler {@Overridepublic Object execute(ExecutionEvent event) throws ExecutionException {IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();for (IEditorReference ref : page.getEditorReferences()) {IEditorPart editor = ref.getEditor(false);if (null == editor) {System.out.println(String.format("%s未被编辑", ref.getTitle()));continue;}System.out.println(String.format("%s正在编辑:%s", ref.getTitle(), getEditContent(editor)));}return null;}private String getEditContent(IEditorPart part) {if (part instanceof ITextEditor) {ITextEditor editor = (ITextEditor) part;IDocumentProvider provider = editor.getDocumentProvider();IDocument document = provider.getDocument(editor.getEditorInput());return document.get();}return null;}}