org.eclipse.emf.eef.runtime.ui.gwt.dialog.ErrorDialog.java Source code

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Here is the source code for org.eclipse.emf.eef.runtime.ui.gwt.dialog.ErrorDialog.java

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/*******************************************************************************
 * Copyright (c) 2008, 2011 Obeo.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Obeo - initial API and implementation
 *******************************************************************************/
package org.eclipse.emf.eef.runtime.ui.gwt.dialog;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.emf.common.util.Diagnostic;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.Tree;
import com.google.gwt.user.client.ui.TreeItem;

/**
 * @author glefur
 *
 */
public class ErrorDialog extends DialogBox {

    private Tree tree;
    private Object selection;

    public ErrorDialog(String errorText, Throwable caught) {
        super();
        this.setText(errorText);
        List<Throwable> throwables = new ArrayList<Throwable>();
        throwables.add(caught);
        createDialogControl();
        tree.addItem(createTreeItems(caught));
    }

    public ErrorDialog(String errorText, Diagnostic diagnostic) {
        this.setText(errorText);
        createDialogControl();
        tree.addItem(createTreeItems(diagnostic));
    }

    public ErrorDialog(String errorText, List<Diagnostic> children) {
        this.setText(errorText);
        createDialogControl();
        for (Diagnostic diagnostic : children) {
            tree.addItem(createTreeItems(diagnostic));
        }
    }

    public void open() {
        this.show();
    }

    protected void createDialogControl() {
        final Button okButton = new Button("OK");
        tree = new Tree();
        Grid grid = new Grid();
        grid.setWidth("150em");
        grid.resize(2, 1);
        grid.setWidget(0, 0, tree);
        grid.setWidget(1, 0, okButton);
        this.setWidget(grid);
        okButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                TreeItem selectedItem = tree.getSelectedItem();
                ErrorDialog.this.hide();
                processError(selectedItem);
            }
        });
    }

    private TreeItem createTreeItems(Throwable throwable) {
        return new TreeItem(throwable.getLocalizedMessage());
    }

    private TreeItem createTreeItems(Diagnostic diagnostic) {
        if (diagnostic.getSeverity() == Diagnostic.OK) {
            return new TreeItem("No problems detected");
        } else {
            TreeItem treeItem = new TreeItem(diagnostic.getMessage());
            List<?> data = diagnostic.getData();
            if (!data.isEmpty()) {
                treeItem.setUserObject(data.get(0));
            }
            for (Diagnostic child : diagnostic.getChildren()) {
                treeItem.addItem(createTreeItems(child));
            }
            return treeItem;
        }
    }

    protected Object processError(TreeItem selection) {
        return null;
    }

    /**
     * @return the selection
     */
    public Object getSelection() {
        return selection;
    }

}