gov.nist.spectrumbrowser.common.AbstractSpectrumBrowserScreen.java Source code

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Here is the source code for gov.nist.spectrumbrowser.common.AbstractSpectrumBrowserScreen.java

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/*
* Conditions Of Use 
* 
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), and others. 
* This software has been contributed to the public domain. 
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain. 
* As a result, a formal license is not needed to use this software.
* 
* This software is provided "AS IS."  
* NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY.  NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* this software.
*/
package gov.nist.spectrumbrowser.common;

import gov.nist.spectrumbrowser.client.SpectrumBrowser;

import java.util.ArrayList;

import com.google.gwt.canvas.client.Canvas;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONValue;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.MenuBar;
import com.google.gwt.user.client.ui.VerticalPanel;

public abstract class AbstractSpectrumBrowserScreen implements SpectrumBrowserScreen {

    private String endLabel;
    private ArrayList<SpectrumBrowserScreen> navigationScreens;
    private VerticalPanel verticalPanel;
    private AbstractSpectrumBrowser abstractSpectrumBrowser;

    public abstract void draw();

    @Override
    public String getLabel() {
        return endLabel + " >> ";
    }

    @Override
    public String getEndLabel() {
        return endLabel;
    }

    public static float round2(double val) {
        return (float) ((int) ((val + .005) * 100) / 100.0);
    }

    public static float round3(double val) {
        return (float) ((int) ((val + .0005) * 1000) / 1000.0);

    }

    public static float round(double val) {
        return (float) ((int) ((val + .05) * 10) / 10.0);
    }

    public void setNavigation(VerticalPanel verticalPanel, ArrayList<SpectrumBrowserScreen> navigation,
            AbstractSpectrumBrowser spectrumBrowser, String endLabel) {
        this.navigationScreens = navigation;
        this.verticalPanel = verticalPanel;
        this.abstractSpectrumBrowser = spectrumBrowser;
        this.endLabel = endLabel;
    }

    public ArrayList<SpectrumBrowserScreen> getNavigation() {
        return this.navigationScreens;
    }

    public void drawNavigation() {

        if (navigationScreens != null) {
            MenuBar menuBar = new MenuBar();
            verticalPanel.add(menuBar);
            for (int i = 0; i < navigationScreens.size() - 1; i++) {
                final SpectrumBrowserScreen thisScreen = navigationScreens.get(i);
                menuBar.addItem(
                        new SafeHtmlBuilder().appendEscaped(navigationScreens.get(i).getLabel()).toSafeHtml(),
                        new Scheduler.ScheduledCommand() {

                            @Override
                            public void execute() {
                                thisScreen.draw();
                            }
                        });
            }

            menuBar.addItem(new SafeHtmlBuilder()
                    .appendEscaped(navigationScreens.get(navigationScreens.size() - 1).getEndLabel()).toSafeHtml(),
                    new Scheduler.ScheduledCommand() {

                        @Override
                        public void execute() {
                            navigationScreens.get(navigationScreens.size() - 1).draw();
                        }
                    });

            if (abstractSpectrumBrowser.isUserLoggedIn()) {
                menuBar.addItem(new SafeHtmlBuilder().appendEscaped("Log Off").toSafeHtml(),
                        new Scheduler.ScheduledCommand() {
                            @Override
                            public void execute() {
                                abstractSpectrumBrowser.logoff();
                            }
                        });

            }

        }

    }

    public void navigateToPreviousScreen() {
        if (this.navigationScreens != null) {
            SpectrumBrowserScreen lastScreen = this.navigationScreens.get(this.navigationScreens.size() - 1);
            lastScreen.draw();
        }
    }

    protected String getAsString(JSONValue jsonValue, String keyName) {
        JSONObject jsonObject = jsonValue.isObject();
        if (jsonObject.containsKey(keyName)) {
            return jsonObject.get(keyName).isString().stringValue();
        } else {
            return "UNDEFINED";
        }

    }

    protected int getAsInt(JSONValue jsonValue, String keyName) {
        JSONObject jsonObject = jsonValue.isObject();
        if (jsonObject.containsKey(keyName)) {
            return (int) jsonObject.get(keyName).isNumber().doubleValue();
        } else {
            return 0;
        }
    }

    protected long getAsLong(JSONValue jsonValue, String keyName) {
        JSONObject jsonObject = jsonValue.isObject();
        if (jsonObject.containsKey(keyName)) {
            return (long) jsonObject.get(keyName).isNumber().doubleValue();
        } else {
            return 0;
        }
    }

    protected boolean getAsBoolean(JSONValue jsonValue, String keyName) {
        JSONObject jsonObject = jsonValue.isObject();
        if (jsonObject.containsKey(keyName)) {
            return jsonObject.get(keyName).isBoolean().booleanValue();
        } else {
            return false;
        }
    }

}