com.google.gwt.sample.stockwatcher.client.MonitoringPage.java Source code

Introduction

Here is the source code for com.google.gwt.sample.stockwatcher.client.MonitoringPage.java

Source

package com.google.gwt.sample.stockwatcher.client;

import java.util.ArrayList;
import java.util.Date;

import org.moxieapps.gwt.highcharts.client.*;

import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.datepicker.client.DateBox;

public class MonitoringPage extends Composite {

    ContentPanel contentPanel = new ContentPanel();
    VerticalPanel parameterPanel = new VerticalPanel();

    public static HorizontalPanel chartPanel = new HorizontalPanel();
    HorizontalPanel buttonPanel = new HorizontalPanel();
    HorizontalPanel selectionPanel = new HorizontalPanel();

    ListBox siteListBox = new ListBox();
    ListBox siteControllerListBox = new ListBox();
    ListBox controllerSensorListBox = new ListBox();

    FlexTable table = new FlexTable();
    StockChart chart = new StockChart();

    Button backButton = new Button("Back");
    Button goButton = new Button("Go");

    DateBox sDateBox = new DateBox();
    DateBox eDateBox = new DateBox();
    DateBox formatHolder = new DateBox();

    String sDay;
    String sMonth;
    String sYear;
    String eDay;
    String eMonth;
    String eYear;

    public MonitoringPage() {
        Header.setHeaderTitle("Main Menu > Monitoring > Live Update Readings");
        setHandlers();
        setWidgetContent();

        VerticalPanel selectionPanel = new VerticalPanel();
        selectionPanel.setStyleName("mainStyle");
        selectionPanel.setSpacing(10);
        selectionPanel.add(new HTML("<h2>Selection Menu</h2></br>"));
        selectionPanel.add(new HTML("Please select site:"));
        selectionPanel.add(siteListBox);
        selectionPanel.add(new HTML("Please select controller:"));
        selectionPanel.add(siteControllerListBox);
        selectionPanel.add(new HTML("Please select sensor:"));
        selectionPanel.add(controllerSensorListBox);
        selectionPanel.add(goButton);

        parameterPanel.clear();
        parameterPanel.add(selectionPanel);
        parameterPanel.setHeight("100%");
        parameterPanel.setStyleName("parameterPanel");

        chartPanel.clear();
        chartPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
        chartPanel.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);

        contentPanel.clear();
        contentPanel.addLeft(parameterPanel);
        contentPanel.add(chartPanel);
        //      contentPanel.addRight(filterPanel);

        initWidget(contentPanel);
    }

    private Boolean validInputFields() {
        if (siteControllerListBox.getSelectedItemText().equals("None")) {
            Window.alert("No controller is selected");
            return false;
        }
        if (controllerSensorListBox.getSelectedItemText().equals("None")) {
            Window.alert("No sensor is selected");
            return false;
        }
        return true;
    }

    public void setHandlers() {
        siteListBox.addChangeHandler(new ChangeHandler() {
            public void onChange(ChangeEvent event) {
                showControllers(siteControllerListBox, siteListBox.getSelectedItemText());
                showSensors(controllerSensorListBox, siteControllerListBox.getSelectedItemText());
            }
        });
        siteControllerListBox.addChangeHandler(new ChangeHandler() {
            public void onChange(ChangeEvent event) {
                showSensors(controllerSensorListBox, siteControllerListBox.getSelectedItemText());
            }
        });
        goButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                sendDataToServer();
            };
        });
    }

    private void sendDataToServer() {
        if (validInputFields()) {
            chartPanel.clear();
            chartPanel.add(Utility.addTimer());
            ChartUtilities.getData(controllerSensorListBox.getSelectedItemText(),
                    ChartUtilities.stringToStartDate(getSDate()), ChartUtilities.stringToEndDate(getEDate()), false,
                    true, 1);
        }
    }

    private String getSDate() {
        return (formatHolder.getFormat().format(sDateBox, sDateBox.getValue()) + "");
    }

    private String getEDate() {
        return (formatHolder.getFormat().format(eDateBox, eDateBox.getValue()) + "");
    }

    @SuppressWarnings("deprecation")
    public void setWidgetContent() {

        Date past24Hours = new Date(new Date().getTime() - 86400000);
        Date today = new Date();

        formatHolder.setFormat(new DateBox.DefaultFormat(ChartUtilities.requestFormat));

        sDateBox.setFormat(new DateBox.DefaultFormat(ChartUtilities.calendarFormat));
        sDateBox.getDatePicker().setYearArrowsVisible(true);
        sDateBox.setValue(past24Hours);

        eDateBox.setFormat(new DateBox.DefaultFormat(ChartUtilities.calendarFormat));
        eDateBox.getDatePicker().setYearArrowsVisible(true);
        eDateBox.setValue(today);

        siteListBox.clear();
        siteControllerListBox.clear();

        for (String siteName : Data.siteList.keySet()) {
            siteListBox.addItem(siteName);
        }

        showControllers(siteControllerListBox, 0);
        showSensors(controllerSensorListBox, 0);
    }

    private void showControllers(ListBox listBox, int category) {
        showControllers(listBox, siteListBox.getSelectedItemText());
    }

    private void showControllers(ListBox listBox, String category) {
        siteControllerListBox.clear();
        try {
            for (String controllerName : Data.siteControllerList.get(category)) {
                siteControllerListBox.addItem(controllerName);
            }
        } catch (Exception e) {
            siteControllerListBox.addItem("None");
        }
    }

    private void showSensors(ListBox listBox, int category) {
        showSensors(listBox, siteControllerListBox.getSelectedItemText());
    }

    private void showSensors(ListBox listBox, String category) {
        controllerSensorListBox.clear();
        try {
            for (String sensorName : Data.controllerSensorList.get(category)) {
                controllerSensorListBox.addItem(sensorName);
            }
        } catch (Exception e) {
            controllerSensorListBox.addItem("None");
        }
    }

    public ArrayList<String> getSelectedItems() {
        ArrayList<String> selectedItems = new ArrayList<String>();
        for (int i = 0; i < siteControllerListBox.getItemCount(); i++) {
            if (siteControllerListBox.isItemSelected(i)) {
                selectedItems.add(siteControllerListBox.getItemText(i));
            }
        }
        return selectedItems;
    }
}