Question

我正在使用附加的Properties视图的自定义编辑器（eclipse提供的默认属性视图）。在编辑器中，我有TreeViewer，我在属性视图中显示所选节点属性。

TreeViewer正在处理XML文件。在createpartControl方法中，我正在设置选择提供程序。

public void createPartControl(Composite parent) {
    .........       
    treeViewer.getTree().setHeaderVisible(true);
    treeViewer.getTree().setLinesVisible(true);
    treeViewer.setContentProvider(new CopybookXMLEditorContentProvider());

    //creating columns
    createColumns(treeColLayout);
    //setting tree input
    treeViewer.setInput(inputFileDoc.getDocumentElement());
    //adding tree to workbench selection service for providing properties
    getSite().setSelectionProvider(treeViewer);
    .....
}

由于选择将是一个DOM节点，我添加了一个提供IPropertySourceProvider对象的适配器。

public <T> T getAdapter(Object adaptableObject, Class<T> adapterType) {
    if(adaptableObject instanceof Node && adapterType == IPropertySourceProvider.class){
        return (T) new CopybookXMLEditorPropertyProvider(((Node)adaptableObject));
    }
    return null;
}

@Override
public Class<?>[] getAdapterList() {
    return new Class[]{IPropertySourceProvider.class};
}

在实现IPropertySourceProvider接口的类中，我从传递的节点获取属性并将其设置在POJO类中。我在IPropertySource方法中将此对象设为getPropertySource()类。

public class CopybookXMLEditorPropertyProvider implements IPropertySourceProvider {

private Node selectedNode;

public CopybookXMLEditorPropertyProvider(Node selectedNode) {
    this.selectedNode = selectedNode;
}

@Override
public IPropertySource getPropertySource(Object object) {
    CopybookItem item = prepareItemValues();
    return new CopybookXMLEditorPropertySource(item);
}

private CopybookItem prepareItemValues() {
    CopybookItem item = new CopybookItem();

    Node nameNode = selectedNode.getAttributes().getNamedItem("name");
    if(nameNode!=null) {
        item.setCopybookFieldName(nameNode.getNodeValue());
    }
    ....
    return item;
}

CopybookItem类

public class CopybookItem {

private String copybookFieldName = CommonConstants.EMPTY_STRING;
.......


public String getCopybookFieldName() {
    return copybookFieldName;
}

public void setCopybookFieldName(String copybookFieldName) {
    this.copybookFieldName = copybookFieldName;
}
//....remaining getter setters

}

在实现IPropertySource接口

的类中

public class CopybookXMLEditorPropertySource implements IPropertySource{

private CopybookItem copybookItem;

public CopybookXMLEditorPropertySource(CopybookItem copybookItem) {
    this.copybookItem = copybookItem;
}

@Override
public Object getEditableValue() {
    return this;
}

@Override
public IPropertyDescriptor[] getPropertyDescriptors() {
    IPropertyDescriptor[] propertyDescArr = new IPropertyDescriptor[7];
    TextPropertyDescriptor javaBeanDescriptor = new TextPropertyDescriptor("javaBean", "Java Property Name");
    .....
    return propertyDescArr;
}

@Override
public Object getPropertyValue(Object id) {
    String property = (String)id;
    switch (property) {
        case "javaBean":
            return copybookItem.getJavaPropertyName();
        ....
    }
}

@Override
public void setPropertyValue(Object id, Object value) {
    String property = (String)id;
    String propertyvalue = String.valueOf(value);
    switch (property) {
        case "javaBean":
             copybookItem.setJavaPropertyName(propertyvalue);
            ...more cases
    }
}

属性是可编辑的，因此一旦用户更改它们，我想将树查看器与更改同步并将编辑器标记为脏。如何在树查看器中监听这些更改并更新原始XML节点。

任何人都可以就如何实现这一点给出一些指示。谢谢！

将编辑器与“属性”视图中的更改同步

0 个答案: