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A Java API to generate highchart json on the server side.

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package nl.pvanassen.geckoboard.api.widget;

import nl.pvanassen.geckoboard.api.Push;
import nl.pvanassen.geckoboard.api.error.ValidationException;
import nl.pvanassen.geckoboard.api.json.common.GraphType;
import nl.pvanassen.geckoboard.api.json.common.TextValuePrefixItem;

import com.google.gson.annotations.SerializedName;

public class RAGColumnsAndNumbers extends Push {

    @SerializedName("item")
    private final TextValuePrefixItem[] items = new TextValuePrefixItem[3];

    @SerializedName("type")
    private final GraphType graphType;

    public RAGColumnsAndNumbers(String widgetKey, GraphType graphType) {
        super(widgetKey);
        this.graphType = graphType;
    }

    public void setAmber(String label, int value) {
        setAmber(label, value, null);
    }

    public void setAmber(String label, int value, String prefix) {
        items[1] = new TextValuePrefixItem(label, value, prefix);
    }

    public void setGreen(String label, int value) {
        setGreen(label, value, null);
    }

    public void setGreen(String label, int value, String prefix) {
        items[0] = new TextValuePrefixItem(label, value, prefix);
    }

    public void setRed(String label, int value) {
        setRed(label, value, null);
    }

    public void setRed(String label, int value, String prefix) {
        items[2] = new TextValuePrefixItem(label, value, prefix);
    }

    @Override
    protected void validate() throws ValidationException {
        if (graphType == null) {
            throw new ValidationException("graphType", "Cannot be null");
        }
    }
}