importfeeddialog.java

RSS一般理解为Rich Site Summary的所写

package mynews;

import java.awt.Toolkit;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Dialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.TreeItem;

import org.jdom.input.SAXBuilder;
import com.swtdesigner.SWTResourceManager;
import org.jdom.*;

public class ImportFeedDialog extends Dialog {

	private Combo combo;
	private Text text;
	protected Object result;
	protected Shell shell;

	/**
	 * Create the dialog
	 * @param parent
	 * @param style
	 */
	public ImportFeedDialog(Shell parent, int style) {
		super(parent, style);
	}

	/**
	 * Create the dialog
	 * @param parent
	 */
	public ImportFeedDialog(Shell parent) {
		this(parent, SWT.NONE);
	}

	/**
	 * Open the dialog
	 * @return the result
	 */
	public Object open() {
		createContents();
		shell.open();
		shell.layout();
		Display display = getParent().getDisplay();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}
		return result;
	}

	/**
	 * Create contents of the dialog
	 */
	protected void createContents() {
		shell = new Shell(getParent(), SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
		shell.setSize(430, 159);
		Toolkit kit = Toolkit.getDefaultToolkit();
		shell.setLocation((kit.getScreenSize().width - 430) / 2, (kit.getScreenSize().height - 159) / 2);
		shell.setText("Import Feed");

		final Label opmlFileLabel = new Label(shell, SWT.NONE);
		opmlFileLabel.setText("OPML File:");
		opmlFileLabel.setBounds(43, 15, 62, 14);

		text = new Text(shell, SWT.BORDER);
		text.setBounds(111, 12, 225, 22);

		final Button browsersButton = new Button(shell, SWT.NONE);
		browsersButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(final SelectionEvent e) {
				FileDialog fd = new FileDialog(shell, SWT.OPEN);
				fd.setText("Choose a OPML file:");
				fd.setFilterExtensions(new String[]{"*.xml", "*.*"});
				text.setText(fd.open());
			}
		});
		browsersButton.setText("Browse...");
		browsersButton.setBounds(343, 10, 71, 24);

		final Label chooseAGroupLabel = new Label(shell, SWT.NONE);
		chooseAGroupLabel.setText("Choose a group:");
		chooseAGroupLabel.setBounds(15, 45, 90, 14);

		combo = new Combo(shell, SWT.READ_ONLY);
		combo.setBounds(111, 42, 225, 22);
		for(TreeItem tmp : (java.util.Vector<TreeItem>)shell.getParent().getData("groupItems")){
			combo.add(tmp.getText());
			combo.select(0);
		}
		final Label weSupportImportingLabel = new Label(shell, SWT.WRAP);
		weSupportImportingLabel.setForeground(SWTResourceManager.getColor(128, 128, 255));
		weSupportImportingLabel.setText("We support importing feeds from OPML files. First click 'Browse' to locate a OPML file, and then choose a group for the feeds, finally, hit 'Import' button.");
		weSupportImportingLabel.setBounds(20, 75, 392, 49);

		final Button importButton = new Button(shell, SWT.NONE);
		importButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(final SelectionEvent e) {
				if (text.getText().equals(""))
					return;
				Document doc = null;
				try {
					doc = new SAXBuilder().build(new java.io.File(text.getText()));
				} catch (Exception ex){
					MessageDialog.openError(shell, "Error", "OPML file: '" + text.getText() + "' seems got some errors, see below:\n\n" + ex.getMessage());
					return;
				}
				TreeItem groupItem = null;
				for(TreeItem tmp : (java.util.Vector<TreeItem>)shell.getParent().getData("groupItems")){
					if (combo.getItem(combo.getSelectionIndex()).equals(tmp.getText())){
						groupItem = tmp;
						break;
					}
				}
				java.util.Vector<TreeItem> tmpFeeds = (java.util.Vector<TreeItem>)shell.getParent().getData("feedItems");
				Element feeds = doc.getRootElement().getChild("body");
				int counter = 0;
				for(Object obj : feeds.getChildren()){
					for (Object item : ((Element)obj).getChildren()){
						counter++;
						Element el = (Element)item;
						TreeItem ti = new TreeItem(groupItem, SWT.NONE);
						ti.setText(el.getAttributeValue("title"));
						ti.setImage(SWTResourceManager.getImage(MyNewsMain.class, "/img/mbi_039.gif"));
						ti.setData("rss", el.getAttributeValue("xmlUrl"));
						ti.setData("url", el.getAttributeValue("htmlUrl"));
						ti.setData("title", el.getAttributeValue("title"));
						ti.setData("group", groupItem.getText());
						tmpFeeds.add(ti);
					}
				}
				MessageDialog.openInformation(shell, "Done", "" + counter + " feeds imported successfully!");
				shell.close();
			}
		});
		importButton.setFont(SWTResourceManager.getFont("Tahoma", 10, SWT.BOLD));
		importButton.setText("Import");
		importButton.setBounds(343, 40, 71, 24);
		//
	}

}