com.kk_electronic.kkportal.core.util.DebugPanel.java Source code

Introduction

Here is the source code for com.kk_electronic.kkportal.core.util.DebugPanel.java

Source

/*
 * Copyright 2010 kk-electronic a/s. 
 * 
 * This file is part of KKPortal.
 *
 * KKPortal is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * KKPortal is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with KKPortal.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package com.kk_electronic.kkportal.core.util;

import java.util.LinkedList;
import java.util.List;

import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.dom.client.Style.Overflow;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.Event.NativePreviewEvent;
import com.google.gwt.user.client.Event.NativePreviewHandler;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.LayoutPanel;
import com.google.gwt.user.client.ui.RootLayoutPanel;
import com.google.inject.Inject;
import com.kk_electronic.kkportal.core.inject.ConstructFromLiteral;

@ConstructFromLiteral
public class DebugPanel {
    static HTML panel;
    static boolean showing = false;

    private NativePreviewHandler handler = new NativePreviewHandler() {

        @Override
        public void onPreviewNativeEvent(NativePreviewEvent event) {
            if (event.getTypeInt() == Event.ONKEYDOWN) {
                NativeEvent e = event.getNativeEvent();
                if (e.getAltKey() && e.getShiftKey()) {
                    toggleDebugWindow();
                }
            }
        }
    };
    private final LayoutPanel p;

    @Inject
    public DebugPanel() {
        p = RootLayoutPanel.get();
        Event.addNativePreviewHandler(handler);
        refire();
        attachListener();
    }

    protected void toggleDebugWindow() {
        ensureWidget();
        showing = !showing;
        p.setWidgetTopHeight(panel, 0, Unit.PCT, showing ? 100 : 0, Unit.PCT);
        p.animate(250);
    }

    private void ensureWidget() {
        if (panel != null)
            return;
        panel = new HTML();
        panel.getElement().getStyle().setZIndex(200);
        panel.getElement().getStyle().setBackgroundColor("black");
        panel.getElement().getStyle().setColor("green");
        panel.getElement().getStyle().setOverflow(Overflow.SCROLL);
        RootLayoutPanel.get().add(panel);
        updatelog();
    }

    private static void updatelog() {
        SafeHtmlBuilder builder = new SafeHtmlBuilder();
        builder.appendEscaped("Raw log");
        builder.appendHtmlConstant(
                "<table><tr><th>Time</th><th>Sub System</th><th>Group Key</th><th>Type</th></tr>");
        for (MetricInfo i : infos) {
            builder.appendHtmlConstant("<tr><td>");
            builder.append((long) (i.getMillis() - start));
            builder.appendHtmlConstant("</td><td>");
            builder.appendEscaped(i.getSubSystem());
            builder.appendHtmlConstant("</td><td>");
            builder.appendEscaped(i.getEvtGroup());
            builder.appendHtmlConstant("</td><td>");
            builder.appendEscaped(i.getType());
            builder.appendHtmlConstant("</td></tr>");
        }
        builder.appendHtmlConstant("</table>");
        panel.setHTML(builder.toSafeHtml());
    }

    static List<MetricInfo> infos = new LinkedList<MetricInfo>();

    static Double start;

    @SuppressWarnings("unused")
    private static void onMetric(MetricInfo info) {
        if (start == null) {
            start = info.getMillis();
        }
        infos.add(info);
        if (panel != null) {
            updatelog();
        }
    }

    private native void refire() /*-{
                                 for (key in $wnd.__stats){
                                 @com.kk_electronic.kkportal.core.util.DebugPanel::onMetric(Lcom/kk_electronic/kkportal/core/util/MetricInfo;)($wnd.__stats[key]);
                                 }
                                 }-*/;

    private native void attachListener() /*-{
                                         $wnd.__stats_listener = @com.kk_electronic.kkportal.core.util.DebugPanel::onMetric(Lcom/kk_electronic/kkportal/core/util/MetricInfo;);
                                         }-*/;
}