RCP定制自己的搜索插件-实例

你的名字 2022-04-14 03:56 183阅读 0赞

本文介绍如何扩展/定制 Eclipse 的搜索插件 org.eclipse.search（后面附实例）

资源查找是 Eclipse 的一个重要功能。可是，当我们做RCP开发时，Eclipse 搜索功能不一定适合个性化的需求，这是我们就需要扩展 Eclipse 的搜索插件 org.eclipse.search。

这里以Spring IDE Bean Search为例，介绍应扩展之处和其中的关键点。搜索页的类名为BeanSearchPage, 搜索结果页的类名为BeanSearchResultPage

1. 菜单加入显示搜索页（这是入口）

方法一：在org.eclipse.search.menu/dialogGroup中加一个action，以在java\\file search 的旁边加一 Tab , 显示你的搜索页 MyBeanSearchPage。

方法二：菜单加入高级查找和替换。如图

![17e70648-8daf-346c-84b1-7d91a34be968.jpg][]

2. 扩展org.eclipse.search.searchPages，定制自己的搜索页 MyBeanSearchPage

public class MyBeanSearchPage extends DialogPage implements ISearchPage
    {
        private Text txtDirectory;
    
        private ISearchPageContainer fContainer;
    
        private Text txtPath;
    
        public MyBeanSearchPage()
        {
        }
    
        @Override
        public void createControl(Composite parent)
        {
            initializeDialogUnits(parent);
    
            Composite composite = new Composite(parent, SWT.NONE);
            composite.setFont(parent.getFont());
            GridLayout gridLayout = new GridLayout(3, false);
            composite.setLayout(gridLayout);
    
            Label lblNewLabel = new Label(composite, SWT.NONE);
            lblNewLabel.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false,
                    false, 1, 1));
            lblNewLabel.setText("搜索关键字");
    
            txtDirectory = new Text(composite, SWT.BORDER);
            txtDirectory.setText("directory");
            txtDirectory.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true,
                    false, 1, 1));
            setControl(composite);
            new Label(composite, SWT.NONE);
    
            Label lblNewLabel_1 = new Label(composite, SWT.NONE);
            lblNewLabel_1.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false,
                    false, 1, 1));
            lblNewLabel_1.setText("目录路径");
    
            txtPath = new Text(composite, SWT.BORDER);
            txtPath.setText("E:\\yucheng\\bsp\\trunk\\runtime-BankITIDE.product\\HelloBSP\\HelloWorld\\HelloCommu\\Hello\\input\\pcs");
            txtPath.setEditable(false);
            txtPath.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false,
                    1, 1));
    
            Button btnNewButton = new Button(composite, SWT.NONE);
            btnNewButton.addSelectionListener(new SelectionAdapter()
            {
                @Override
                public void widgetSelected(SelectionEvent e)
                {
                    DirectoryDialog directoryDialog = new DirectoryDialog(
                            getShell());
                    directoryDialog.setText("选择目录路径");
                    String directoryPath = directoryDialog.open();
                    txtPath.setText(directoryPath);
                }
            });
            btnNewButton.setText("选择目录路径");
        }
    
        @Override
        public boolean performAction()
        {
            NewSearchUI.activateSearchResultView();
            MyBeanSearchQuery myBeanSearchQuery = new MyBeanSearchQuery();
            myBeanSearchQuery.setKeyword(txtDirectory.getText());
            myBeanSearchQuery.setDirectoryPath(txtPath.getText());
            NewSearchUI.runQueryInBackground(myBeanSearchQuery);
            return true;
        }
    
        @Override
        public void setContainer(ISearchPageContainer container)
        {
            fContainer = container;
        }
    
    }

3. 扩展org.eclipse.search.searchResultViewPages，定制自己的搜索结果页BeanSearchResultPage

public class MySearchResultPage extends AbstractTextSearchViewPage
    {
        private MyFileTreeContentProvider fContentProvider;
    
        @Override
        protected void elementsChanged(Object[] objects)
        {
            if (fContentProvider != null)
            {
                fContentProvider.elementsChanged(objects);
            }
        }
    
        @Override
        protected void clear()
        {
            if (fContentProvider != null)
                fContentProvider.clear();
        }
    
        @Override
        protected void configureTreeViewer(TreeViewer viewer)
        {
            viewer.setUseHashlookup(true);
            MyFileLabelProvider myFileLabelProvider = new MyFileLabelProvider();
            viewer.setLabelProvider(myFileLabelProvider);
            viewer.setContentProvider(new MyFileTreeContentProvider(viewer));
            fContentProvider = (MyFileTreeContentProvider) viewer
                    .getContentProvider();
            this.setElementLimit(50);
        }
    
        @Override
        protected void configureTableViewer(TableViewer viewer)
        {
            // TODO Auto-generated method stub
    
        }
    
    }

2和3的扩展点

![d390f08c-50d5-3c99-94aa-0c70f287f5dd.jpg][]

4. 此外，还用到的相关接口，详见附件的插件工程

ISearchQuery.java，搜索的入口

Match.java，结果集

NewSearchUI.java，UI启动类

5. 运行

搜索输入界面

![18df6fed-cb85-3551-b51b-7c477e7da24e.jpg][]

搜索结果显示界面

![21d559f6-c9d7-39fb-9bf0-9808191aa55b.jpg][]

6. 附件是一个简单的示例。

[17e70648-8daf-346c-84b1-7d91a34be968.jpg]: /images/20220414/f4a5e6661fb644e6b7e91d61726c7fdd.png
[d390f08c-50d5-3c99-94aa-0c70f287f5dd.jpg]: /images/20220414/acb21e584f104935880d74f77728611d.png
[18df6fed-cb85-3551-b51b-7c477e7da24e.jpg]: /images/20220414/d60f0507d90f4ee1b0885b34ae5809b2.png
[21d559f6-c9d7-39fb-9bf0-9808191aa55b.jpg]: /images/20220414/d02f8d7271294d8e90d43aca9b3d23ee.png