eclipse FilteredTree

最新推荐文章于 2020-03-01 18:12:43 发布

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最新推荐文章于 2020-03-01 18:12:43 发布

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/dlbrant/archive/2009/02/17/1392659.html

本文介绍了一个使用Eclipse UI库中FilteredTree组件的示例代码，展示了如何创建一个包含过滤功能的树形界面，并配置了LabelProvider和自定义的ITreeContentProvider来实现节点的数据展示和加载。

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//org.eclipse.ui.dialogs.FilteredTree

Code
public class XXXPage extends WizardPage {
  // gui
  private FilteredTree projectList;

  public void createControl(Composite parent) {

        // create the composite to hold the widgets
        Composite composite = new Composite(parent, SWT.NULL);

        // create the desired layout for this wizard page
        GridLayout layout = new GridLayout();
        layout.numColumns = MAX_COLUMN;
        composite.setLayout(layout);


        // create the list of bug reports
        projectList = new FilteredTree(composite, SWT.SINGLE | SWT.BORDER, new PatternFilter());
        //projectList.setLayoutData(GridDataFactory.swtDefaults().align(SWT.FILL, SWT.FILL).grab(true, true).hint(
        //        SWT.DEFAULT, 200).create());
        GridData gridData = new GridData(GridData.FILL_BOTH);
        gridData.widthHint = 80;
        gridData.heightHint = 160;
        gridData.verticalSpan = VERT_SPAN;

        projectList.setLayoutData(gridData);
        final TreeViewer projectViewer = projectList.getViewer();

        projectViewer.setLabelProvider(new LabelProvider());
        projectViewer.setContentProvider(new ITreeContentProvider() {

            public Object[] getChildren(Object parentElement) {
                //if (parentElement instanceof Collection) {
                //    return ((Collection<?>) parentElement).toArray();
                //}
                if(parentElement instanceof XXX){

;
                    return node.getChildren().toArray();
                }
                return null;
            }

            public Object getParent(Object element) {
                if(element instanceof XXX){

                    return node.getParent();
                }
                return null;
            }

            public boolean hasChildren(Object element) {
                if(element instanceof XXX){

                    return (node.getChildren().size()>0);
                }
                return false;
            }

            public Object[] getElements(Object inputElement) {
                //return getChildren(inputElement);
                if(inputElement instanceof Collection  ){
                    return ((Collection<?>) inputElement).toArray();
                }
                return null;
            }

            public void dispose() {
            }

            public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
            }
        });

        projectViewer.addOpenListener(new IOpenListener() {
            public void open(OpenEvent event) {
                if (getWizard().canFinish()) {
                    if (getWizard().performFinish()) {
                        ((WizardDialog) getContainer()).close();
                    }
                }
            }
        });

        projectViewer.addPostSelectionChangedListener(new ISelectionChangedListener() {

            public void selectionChanged(SelectionChangedEvent event) {
                // Initialize a variable with the no error status
                Status status = new Status(IStatus.OK, DevTrackCorePlugin.PLUGIN_ID , 0, "", null);
                if (projectViewer.getSelection().isEmpty()) {

                }
                // Show the most serious error
                applyToStatusLine(status);
                isPageComplete();

            }

        });

        // set the composite as the control for this page
        setControl(composite);

        isPageComplete();
    }

}

转载于:https://www.cnblogs.com/dlbrant/archive/2009/02/17/1392659.html