com.google.gwt.gen2.logging.handler.client.PopupLogHandler.java Source code

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Here is the source code for com.google.gwt.gen2.logging.handler.client.PopupLogHandler.java

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/*
 * Copyright 2008 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.gwt.gen2.logging.handler.client;

import com.google.gwt.gen2.logging.shared.LogEvent;
import com.google.gwt.gen2.logging.shared.LogHandler;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * Shows a widget log handler in a {@link PopupPanel}.
 * 
 * @param <WidgetLogHandler> the widget log handler
 */
public class PopupLogHandler<WidgetLogHandler extends Widget & LogHandler> extends PopupPanel
        implements LogHandler {
    private final WidgetLogHandler widget;
    private boolean autoShow;

    /**
     * Constructor. If autoShow is true, the popup is shown whenever a new message
     * is added and hidden whenever the popup loses focus.
     * 
     * @param autoShow show popup when messages are logged
     * @param widget the underlying widget log handler
     */
    public PopupLogHandler(boolean autoShow, WidgetLogHandler widget) {
        super(autoShow);
        this.autoShow = autoShow;
        setStyleName("gwt-PopupLogHandler");
        this.widget = widget;
        setWidget(widget);
    }

    /**
     * Constructor.
     * 
     * @param widget the underlying widget log handler
     */
    public PopupLogHandler(WidgetLogHandler widget) {
        this(true, widget);
    }

    /**
     * Gets the underlying log handler widget.
     * 
     * @return the underlying widget
     */
    @Override
    public WidgetLogHandler getWidget() {
        return widget;
    }

    public void onLog(LogEvent event) {
        widget.onLog(event);
        if (autoShow) {
            this.show();
        }
    }

}