eclipse插件开发学习笔记配套代码

首先，感谢您对eclipse插件开发学习的关注！下面是一些学习笔记配套代码的例子。

1. 创建一个最简单的插件：

public class HelloWorldPlugin implements IStartup {
    @Override
    public void earlyStartup() {
        System.out.println("Hello, Eclipse Plugin Development!");
    }
}

2. 在Eclipse菜单中添加一个新的命令：

public class MyCommandHandler extends AbstractHandler {
    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {
        MessageDialog.openInformation(HandlerUtil.getActiveWorkbenchWindow(event).getShell(), "My Command", "Hello, Eclipse Plugin Development!");
        return null;
    }
}

3. 在编辑器右键菜单中添加一个新的动作：

public class MyEditorAction extends Action {
    public MyEditorAction() {
        setText("My Action");
    }

    @Override
    public void run() {
        IEditorPart editor = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
        if (editor instanceof ITextEditor) {
            ITextEditor textEditor = (ITextEditor) editor;
            IDocumentProvider documentProvider = textEditor.getDocumentProvider();
            IDocument document = documentProvider.getDocument(textEditor.getEditorInput());
            selectCurrentWord(textEditor, document);
        }
    }

    private void selectCurrentWord(ITextEditor editor, IDocument document) {
        ISelectionProvider selectionProvider = editor.getSelectionProvider();
        ITextSelection selection = (ITextSelection) selectionProvider.getSelection();
        int offset = selection.getOffset();
        
        try {
            int lineStartOffset = document.getLineOffset(selection.getStartLine());
            int lineEndOffset = lineStartOffset + document.getLineLength(selection.getStartLine());

            String lineText = document.get(lineStartOffset, lineEndOffset - lineStartOffset);

            int wordStartOffset = lineText.lastIndexOf(' ', offset - lineStartOffset) + 1;
            int wordEndOffset = lineText.indexOf(' ', offset - lineStartOffset);

            if (wordEndOffset < wordStartOffset) { // The word is the last or only word on the line
                wordEndOffset = lineEndOffset - lineStartOffset;
            } else {
                wordEndOffset += lineStartOffset;
            }

            selectionProvider.setSelection(new TextSelection(wordStartOffset, wordEndOffset - wordStartOffset));
        } catch (BadLocationException e) {
            e.printStackTrace();
        }
    }
}

此处仅提供了一些简单的示例代码，以帮助您开始使用eclipse插件开发。有关更详细的学习和开发指导，请参阅Eclipse官方文档和教程。祝您在插件开发的学习过程中取得成功！