Swt/Jface listviewer的实现

前边将过了TableViewer和TreeViewer再来看ListViewer就简单了，操作步骤一样，但更简单。这里只给出使用的代码一、代码，这个实现不同于前边是分开实现（都是public 的类），这里给出的是内部类的实现方式。

import java.util.ArrayList;import java.util.List;import org.eclipse.jface.viewers.IStructuredContentProvider;import org.eclipse.jface.viewers.LabelProvider;import org.eclipse.jface.viewers.ListViewer;import org.eclipse.jface.viewers.Viewer;import org.eclipse.swt.SWT;import org.eclipse.swt.graphics.Image;import org.eclipse.swt.layout.FillLayout;import org.eclipse.swt.widgets.Display;import org.eclipse.swt.widgets.Shell;public class TestListViewer {    static class ListLabelProvider extends LabelProvider {        public String getText(Object element) {            Country country = (Country)element;            return country.getName();        }        public Image getImage(Object element) {            return null;        }    }    static class ContentProvider implements IStructuredContentProvider {        public Object[] getElements(Object inputElement) {            if(inputElement instanceof List){                List list = (List)inputElement;                return list.toArray();            }            return new Object[0];        }        public void dispose() {        }        public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {        }    }    static class Country {        private String name;        public Country(){        }        public Country(String name){            this.name = name;        }        public String getName() {            return name;        }        public void setName(String name) {            this.name = name;        }        public static List getCountryList(){            List list = new ArrayList();            list.add(new Country("中国"));            list.add(new Country("美国"));            list.add(new Country("日本"));            return list;        }            }    private static org.eclipse.swt.widgets.List list;    /** *//**     * Launch the application     * @param args     */    public static void main(String[] args) {        final Display display = Display.getDefault();        final Shell shell = new Shell();        shell.setSize(500, 375);        shell.setText("SWT Application");        //                shell.open();        final ListViewer listViewer = new ListViewer(shell, SWT.BORDER);        listViewer.setLabelProvider(new ListLabelProvider());        listViewer.setContentProvider(new ContentProvider());        listViewer.setInput(new Object());        list = listViewer.getList();        list.setBounds(122, 63, 100, 100);                listViewer.setContentProvider(new ContentProvider());        listViewer.setLabelProvider(new ListLabelProvider());        listViewer.setInput(Country.getCountryList());        //可以直接添加        listViewer.add(new Country("英国"));        shell.setLayout(new FillLayout());        shell.layout();        while (!shell.isDisposed()) {            if (!display.readAndDispatch())                display.sleep();        }    }}

二、注意代码的注释部分，可以直接添加和移除。