在swt中按下按钮时如何在列表中搜索字符串

Posted 2023-02-22

【中文标题】在swt中按下按钮时如何在列表中搜索字符串

【英文标题】：How to search for a string in the list when the button is pressed in swt

【发布时间】：2015-02-21 06:02:57

【问题描述】：

我创建了一个选项卡文件夹并创建了一些选项卡，在选项卡中我有一个包含列表的组合。所以我有一个文本框，所以当在文本框中键入字符串并按下查找按钮时，列表应该显示包含字符串，那么如何做到这一点。

创建文本框和查找按钮的代码如下

public void postConstruct (Composite parentComposite) 
        parentComposite.setLayout(new GridLayout(1, true));

        Composite topComposite = new Composite(parentComposite, SWT.NONE);
        topComposite.setLayout(new GridLayout(2, false));
        topComposite.setLayoutData(new GridData(SWT.FILL, GridData.FILL, true, true));

        Composite bottomComposite = new Composite(parentComposite, SWT.NONE);
        GridData bottomCompositeGD = new GridData(SWT.FILL, SWT.BOTTOM, true, false);
        bottomCompositeGD.heightHint = 100;
        bottomComposite.setLayout(new GridLayout(2, false));
        bottomComposite.setLayoutData(bottomCompositeGD);

        Composite topLeftComposite = new Composite(topComposite, SWT.NONE);
        topLeftComposite.setLayout(new GridLayout(1, false));
        topLeftComposite.setLayoutData(new GridData(SWT.FILL, GridData.FILL, false, true));

        Composite topRightComposite = new Composite(topComposite, SWT.NONE);
        topRightComposite.setLayout(new GridLayout(1, false));
        topRightComposite.setLayoutData(new GridData(SWT.FILL, GridData.FILL, true, true));

                Composite findTCComposite = new Composite(topRightComposite, SWT.NONE);
        findTCComposite.setLayout(new GridLayout(2, true));
        findTCComposite.setLayoutData(new GridData(SWT.FILL, GridData.FILL, true, false));

        txtFindTC = new Text(findTCComposite, SWT.BORDER | SWT.WRAP | SWT.SINGLE);
        txtFindTC.setLayoutData(new GridData(SWT.FILL, GridData.FILL, true, false));


Button btnFindTC = new Button(findTCComposite, SWT.NONE);
        btnFindTC.setLayoutData(new GridData(SWT.BEGINNING, GridData.BEGINNING, false, false));
        btnFindTC.setText("Find TC");

TabFolder tabFolder = new TabFolder(topRightComposite, SWT.NONE);
        tabFolder.setLayoutData(new GridData(SWT.FILL, GridData.FILL, true, true));

        TabItem itemBasicTC = new TabItem(tabFolder, SWT.NONE);
        itemBasicTC.setText("Basic TCs");

        createListViewBasicTc(tabFolder,itemBasicTC);






the the tab is created is below
private void createListViewBasicTc(Composite composite,TabItem itemBasicTC)
        final List list = new List(composite, SWT.BORDER);
        itemBasicTC.setControl(list);

        creatingDragSource(list);
        //final java.util.List<String> listSort = new ArrayList<String>();
        //for(int i = 1; i <=10 ; i++)
            list.add("TestCase          
            list.add("Test_)");
            list.add("something");


       

所以现在当用户在文本框中输入“some”并按下选项卡中的查找按钮时，它应该只在选项卡中显示“something”。那么如何做到这一点。

【参考方案1】：

试试这样的

 button.addListener (SWT.Selection,  new Listener()



    public void handleEvent(Event e) 
        //This depends on your search criteria
        String search = "A";
        Boolean  found = false;
        for (String str : list) 
            if (str.trim().contains(search)) 
                return true;
            
        
        if (!found) 
            return false;
        
    

);