org.geomajas.gwt2.client.widget.exception.ExceptionDialog.java Source code

Introduction

Here is the source code for org.geomajas.gwt2.client.widget.exception.ExceptionDialog.java

Source

/*
 * This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
 *
 * Copyright 2008-2014 Geosparc nv, http://www.geosparc.com/, Belgium.
 *
 * The program is available in open source according to the GNU Affero
 * General Public License. All contributions in this program are covered
 * by the Geomajas Contributors License Agreement. For full licensing
 * details, see LICENSE.txt in the project root.
 */
package org.geomajas.gwt2.client.widget.exception;

import org.geomajas.gwt2.client.i18n.GlobalMessages;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.PopupPanel.PositionCallback;

/**
 * Dialog for showing Exceptions. It is not recommended to use this in your applications, it is meant only for internal
 * Geomajas affairs.
 * 
 * @author Jan De Moerloose
 * @author Jan Venstermans
 */
public class ExceptionDialog {

    static {
        ExceptionDialogResource resource = GWT.create(ExceptionDialogResource.class);
        resource.css().ensureInjected();
    };

    /**
     * {@link UiBinder} for this class.
     * 
     * @author Jan De Moerloose / Jan Venstermans
     */
    interface ExceptionUiBinder extends UiBinder<ExceptionDialogBox, ExceptionDialog> {
    }

    private static final ExceptionUiBinder UIBINDER = GWT.create(ExceptionUiBinder.class);

    private String message;

    private String stack = "This is a stack trace\nWith a lot of lines\nand so on\nand so on\nand so on\nand so on";

    private ExceptionDialogBox exceptionDialog;

    private static GlobalMessages messages = GWT.create(GlobalMessages.class);

    @UiField
    protected Label messageLabel;

    @UiField
    protected Button detailsButton;

    @UiField
    protected HTML stackPanel;

    public ExceptionDialog(String message, String stack) {
        exceptionDialog = UIBINDER.createAndBindUi(this);
        exceptionDialog.setText(messages.exceptionDialogCaptionText());
        stackPanel.setVisible(false);
        this.message = message;
        this.stack = stack;
    }

    public void clear() {
        messageLabel.setText("");
        stackPanel.setHTML("");
    }

    public void show() {
        clear();
        stackPanel.setHTML(new SafeHtmlBuilder().appendEscapedLines(stack).toSafeHtml());
        messageLabel.setText(message);
        messageLabel.setWordWrap(true);
        exceptionDialog.setPopupPositionAndShow(new PositionCallback() {

            @Override
            public void setPosition(int offsetWidth, int offsetHeight) {
                exceptionDialog.center();
            }
        });
        exceptionDialog.center();
    }

    @UiHandler("detailsButton")
    void handleDetail(ClickEvent e) {
        toggleStackPanel();
    }

    private void toggleStackPanel() {
        stackPanel.setVisible(!stackPanel.isVisible());
        detailsButton.setText(stackPanel.isVisible() ? messages.exceptionDialogCloseDetails()
                : messages.exceptionDialogShowDetails());
    }
}