gwt.material.design.demo.client.ui.charts.MaterialCandleStick.java Source code

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Here is the source code for gwt.material.design.demo.client.ui.charts.MaterialCandleStick.java

Source

package gwt.material.design.demo.client.ui.charts;

/*
 * #%L
 * GwtMaterial
 * %%
 * Copyright (C) 2015 - 2016 GwtMaterialDesign
 * %%
 * 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.
 * #L%
 */

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.JsArrayMixed;
import com.google.gwt.core.client.JsonUtils;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Widget;
import com.googlecode.gwt.charts.client.ChartLoader;
import com.googlecode.gwt.charts.client.ChartPackage;
import com.googlecode.gwt.charts.client.DataTable;
import com.googlecode.gwt.charts.client.corechart.CandlestickChart;
import com.googlecode.gwt.charts.client.corechart.CandlestickChartOptions;
import com.googlecode.gwt.charts.client.options.BackgroundColor;
import com.googlecode.gwt.charts.client.options.Legend;
import com.googlecode.gwt.charts.client.options.LegendPosition;
import com.googlecode.gwt.charts.client.util.ChartHelper;
import gwt.material.design.client.ui.MaterialCardContent;

public class MaterialCandleStick extends Composite {

    private static MaterialCandleStickUiBinder uiBinder = GWT.create(MaterialCandleStickUiBinder.class);

    interface MaterialCandleStickUiBinder extends UiBinder<Widget, MaterialCandleStick> {
    }

    @UiField
    MaterialCardContent cardContent;

    private CandlestickChart chart;

    public MaterialCandleStick() {
        initWidget(uiBinder.createAndBindUi(this));
        initialize();
    }

    private void initialize() {
        ChartLoader chartLoader = new ChartLoader(ChartPackage.CORECHART);
        chartLoader.loadApi(new Runnable() {

            @Override
            public void run() {
                // Create and attach the chart
                chart = new CandlestickChart();
                cardContent.add(chart);
                draw();
            }
        });
    }

    private void draw() {
        JsArrayMixed dataArray = JsonUtils.unsafeEval(
                "[['Mon',20,28,38,45],['Tue',31,38,55,66],['Wed',50,55,77,80],['Thu',77,77,66,50],['Fri',68,66,22,15]]");

        // Prepare the data
        DataTable dataTable = ChartHelper.arrayToDataTable(dataArray, true);

        // Set options
        CandlestickChartOptions options = CandlestickChartOptions.create();
        BackgroundColor bgColor = BackgroundColor.create();
        bgColor.setStroke("#2196f3");
        bgColor.setFill("#90caf9");
        bgColor.setStrokeWidth(2);

        options.setLegend(Legend.create(LegendPosition.NONE));
        options.setFallingColor(bgColor);
        options.setRisingColor(bgColor);

        // Draw the chart
        chart.draw(dataTable, options);
    }

}