addgroupdialog.java

RSS一般理解为Rich Site Summary的所写

package mynews;

import java.awt.Toolkit;

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.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.Tree;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.jface.dialogs.MessageDialog;

import com.swtdesigner.SWTResourceManager;

public class AddGroupDialog extends Dialog {

	private Text group;
	protected Object result;
	protected Shell shell;

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

	/**
	 * Create the dialog
	 * @param parent
	 */
	public AddGroupDialog(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(259, 127);
		Toolkit kit = Toolkit.getDefaultToolkit();
		shell.setLocation((kit.getScreenSize().width - 259) / 2, (kit.getScreenSize().height - 127) / 2);
		shell.setText("Add Group");

		final Label groupNameLabel = new Label(shell, SWT.NONE);
		groupNameLabel.setText("Group Name:");
		groupNameLabel.setBounds(16, 28, 78, 14);

		group = new Text(shell, SWT.BORDER);
		group.setBounds(100, 25, 129, 22);

		final Button okButton = new Button(shell, SWT.NONE);
		okButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(final SelectionEvent e) {
				if (group.getText() == null || group.getText().equals("")){
					MessageDialog.openWarning(shell, "Warning", "Complete the new group name, please!");
					return;
				}
				Tree t = (Tree)shell.getParent().getData("tree");
				for(TreeItem tmp : (java.util.Vector<TreeItem>)shell.getParent().getData("groupItems")){
					if (group.getText().equals(tmp.getText())){
						MessageDialog.openError(shell, "Error", "Group with the same name already exists!");
						return;
					}
				}
				TreeItem ti = new TreeItem(t, SWT.NONE);
				ti.setText(group.getText());
				ti.setImage(SWTResourceManager.getImage(MyNewsMain.class, "/img/mbi_023.gif"));
				MessageDialog.openInformation(shell, "Adding Group", "Group added successfully!");
				shell.close();
			}
		});
		okButton.setText("OK");
		okButton.setBounds(100, 68, 64, 24);

		final Button cancelButton = new Button(shell, SWT.NONE);
		cancelButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(final SelectionEvent e) {
				shell.close();
			}
		});
		cancelButton.setBounds(170, 68, 64, 24);
		cancelButton.setText("Cancel");
		//
	}

}