Java DataObject.isValid方法代碼示例

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
/**
 * Check whether the file object is valid and a valid data object can be
 * found for it. It should be checked after original node is destroyed. It
 * does not have to mean the the file was deleted, but also that a module
 * that contain data loader was enabled. In the letter case, the node should
 * be updated for new data object.
 */
private void checkFileObjectValid() {
    FileObject fo = matchingObject.getFileObject();
    if (fo != null && fo.isValid()) {
        try {
            DataObject reloaded = DataObject.find(fo);
            matchingObject.updateDataObject(reloaded);
            valid = reloaded.isValid();
            if (valid) {
                EventQueue.invokeLater(new Runnable() {
                    @Override
                    public void run() {
                        resetValidOriginal();
                    }
                });
            }
        } catch (DataObjectNotFoundException ex) {
            // still invalid, the file was probably really deleted
        }
    }
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
private Reader getFileStreamFromDocument(File resultFile) {
    FileObject fo = FileUtil.toFileObject(FileUtil.normalizeFile(resultFile));
    if(fo != null){
        DataObject dobj = null;
        try {
            dobj = DataObject.find(fo);
        } catch (DataObjectNotFoundException ex) {
            return null;
        }
        if(dobj.isValid() && dobj.isModified()){
            // DataObjectAdapters does not implement getByteStream
            // so calling this here will effectively return null
            return DataObjectAdapters.inputSource(dobj).getCharacterStream();
        } else{
            //return null so that the validator will use normal file path to access doc
            return null;
        }
    }
    return null;
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
/** Create a new presenter.
 * @param obj XML file describing it
 */
public ShortcutAction(DataObject obj, String helpID, boolean showmaster) {
    this.obj = obj;
    this.helpID = helpID;
    this.showmaster = showmaster;
    putValue("noIconInMenu", true); // NOI18N
    Installer.log.log(Level.FINE, "new ShortcutAction: {0} {1} showmaster={2}", new Object[] {obj, helpID, showmaster});
    updateText();
    updateIcon();
    updateEnabled();
    if (obj.isValid()) {
        Node n = obj.getNodeDelegate();
        n.addNodeListener(org.openide.nodes.NodeOp.weakNodeListener (this, n));
    }
    Help h = findHelp();
    if (h != null) {
        h.addChangeListener(WeakListeners.change(this, h));
    }
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
public Transferable paste() throws IOException {
    if (targetFolder != null) {
        for (Iterator iterator = sourceDataObjects.iterator(); iterator.hasNext();) {
            DataObject dataObject = (DataObject) iterator.next();
            boolean isValid = dataObject != null && dataObject.isValid();
            
            if (isValid && pasteOperation == LoaderTransfer.CLIPBOARD_COPY) {
                dataObject.createShadow(targetFolder);
            } 
            
            if (isValid && pasteOperation == LoaderTransfer.CLIPBOARD_CUT) {
                dataObject.move(targetFolder);
            }
                                
        }                
    }
    return null;
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
/** Sets navigator title according to active context */
private void updateTCTitle (Node[] nodes) {
    String newTitle;
    if (nodes != null && nodes.length > 0) {
        Node node = nodes[0];
        DataObject dObj = obtainNodeDO(node);
        if (dObj != null && dObj.isValid() || updateWhenNotShown) { // updateWhenNotShown is used because of tests - test nodes does not have DO
            newTitle = NbBundle.getMessage(NavigatorTC.class, "FMT_Navigator", node.getDisplayName());  //NOI18N
        } else {
            newTitle = NbBundle.getMessage(NavigatorTC.class, "LBL_Navigator");  //NOI18N
        }
    } else {
        newTitle = NbBundle.getMessage(NavigatorTC.class, "LBL_Navigator");  //NOI18N
    }
    navigatorTC.setDisplayName(newTitle);
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
private void display(Collection<? extends DataObject> selectedFiles) {
    // Show list of targets for selected file:
    if (selectedFiles.size() == 1) {
        DataObject d = selectedFiles.iterator().next();
        if (d.isValid()) { // #145571
            manager.setRootContext(d.getNodeDelegate());
            return;
        }
    }
    // Fallback:
    manager.setRootContext(Node.EMPTY);
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
@Override
public Component getListCellRendererComponent (JList list, Object value, int index, boolean isSelected, boolean cellHasFocus)    // the list and the cell have the focus
{
    final DataObject obj = (DataObject)value;
    if (!obj.isValid()) {
        // #17059: it might be invalid already.
        // #18886: but if so, remove it later, otherwise BasicListUI gets confused.
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                listModel.removeElement(obj);
            }
        });
        setText("");
        return this;
    }

    Node node = obj.getNodeDelegate();

    ImageIcon icon = new ImageIcon(node.getIcon(BeanInfo.ICON_COLOR_16x16));
    super.setIcon(icon);

    setText(node.getDisplayName());
    if (isSelected){
        this.setBackground(UIManager.getColor("List.selectionBackground")); // NOI18N
        this.setForeground(UIManager.getColor("List.selectionForeground")); // NOI18N
    }
    else {
        this.setBackground(list.getBackground());
        this.setForeground(list.getForeground());
    }

    this.setBorder(cellHasFocus ? hasFocusBorder : noFocusBorder);

    return this;
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
/**
 * Returns the project that the active node's fileobject belongs to. 
 * If this cannot be determined for some reason, returns the main project.
 *  
 * @return the project that the active node's fileobject belongs to
 */ 
private Project getCurrentProject() {
    Node[] nodes = TopComponent.getRegistry ().getActivatedNodes ();
    if (nodes == null || nodes.length == 0) {
        return MainProjectManager.getDefault().getMainProject();
    }
    DataObject dao = (DataObject) nodes[0].getLookup().lookup(DataObject.class);
    if (dao == null || !dao.isValid()) {
        return MainProjectManager.getDefault().getMainProject();
    }
    return FileOwnerQuery.getOwner(dao.getPrimaryFile());        
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
@Override
protected Pane createPane() {
    DataObject dobj = getDataObject();
    if (dobj == null || !dobj.isValid()) {
        return super.createPane();
    }
    return (Pane) MultiViews.createCloneableMultiView(MIME_BEAN_INFO, getDataObject());
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
/** 
 * Returns current editor component instance.
 *
 * @return current editor component instance
 */
private static EditorCookie getCurrentEditorCookie () {
    Node[] nodes = TopComponent.getRegistry ().getActivatedNodes ();
    if ((nodes == null) || (nodes.length != 1)) return null;
    Node node = nodes [0];
    DataObject dob = node.getLookup().lookup (DataObject.class);
    if (dob != null && !dob.isValid()) {
        return null;
    }
    return node.getLookup().lookup (EditorCookie.class);
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
@Override
protected boolean close(boolean ask) {
    boolean closed = super.close(ask);
    DataObject dobj = getDataObject();
    if(closed && dobj.isValid()) {
        //set the original property sets
        HtmlDataNode nodeDelegate = (HtmlDataNode)dobj.getNodeDelegate();
        nodeDelegate.setPropertySets(null);
    }
    return closed;
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
@Override
public ClassSource getCopiedBeanClassSource(Transferable transferable) {
    DataObject dobj = NodeTransfer.cookie(transferable, NodeTransfer.COPY, DataObject.class);
    FileObject fo = (dobj != null && dobj.isValid()) ? dobj.getPrimaryFile() : null;
    if (fo == null) {
        return null;
    }

    String clsName = BeanInstaller.findJavaBeanName(fo);
    if (clsName == null) {
        return null;
    }

    return BeanInstaller.getProjectClassSource(fo, clsName);
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
private static FileObject getOpenFileObj() {
    TopComponent activatedTopComponent = TopComponent.getRegistry()
                                         .getActivated();
    if (activatedTopComponent == null) {
        return null;
    }

    DataObject dataObj = activatedTopComponent.getLookup()
                         .lookup(DataObject.class);
    if ((dataObj == null) || !dataObj.isValid()) {
        return null;
    }

    return dataObj.getPrimaryFile();
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
@Override protected Node createNodeForKey(DataObject key) {
    if (!key.isValid()) {
        return null;
    }
    return key instanceof DataFolder ? new PackageFilterNode((DataFolder) key, folder, filter, g) : key.getNodeDelegate().cloneNode();
}
 

import org.openide.loaders.DataObject; //導入方法依賴的package包/類
private static void createMainClass(
        final @NonNull String mainClassName,
        final @NonNull FileObject srcFolder,
        @NullAllowed String mainClassTemplate) throws IOException {

    int lastDotIdx = mainClassName.lastIndexOf( '.' );
    String mName, pName;
    if ( lastDotIdx == -1 ) {
        mName = mainClassName.trim();
        pName = null;
    }
    else {
        mName = mainClassName.substring( lastDotIdx + 1 ).trim();
        pName = mainClassName.substring( 0, lastDotIdx ).trim();
    }

    if ( mName.length() == 0 ) {
        return;
    }

    if (mainClassTemplate == null) {
        mainClassTemplate = "Templates/Classes/Main.java";  //NOI18N
    }
    final FileObject mainTemplate = FileUtil.getConfigFile(mainClassTemplate);

    if ( mainTemplate == null ) {
        LOG.log(
            Level.WARNING,
            "Template {0} not found!",  //NOI18N
            mainClassTemplate);
        return; // Don't know the template
    }

    DataObject mt = DataObject.find( mainTemplate );

    FileObject pkgFolder = srcFolder;
    if ( pName != null ) {
        String fName = pName.replace( '.', '/' ); // NOI18N
        pkgFolder = FileUtil.createFolder( srcFolder, fName );
    }
    DataFolder pDf = DataFolder.findFolder( pkgFolder );
    DataObject res = mt.createFromTemplate( pDf, mName );
    if (res == null || !res.isValid()) {
        LOG.log(
            Level.WARNING,
            "Template {0} created an invalid DataObject in folder {1}!",  //NOI18N
            new Object[] {
                mainClassTemplate,
                FileUtil.getFileDisplayName(pkgFolder)
            });
    }
}