package com.onaro.util.jfc.tables.filter;

import com.onaro.sanscreen.client.view.tabular.value.*;

public class NumberColumnFilter extends NumberFilter {
	private String format;
	
	public NumberColumnFilter(){
		this(null);
	}
    public NumberColumnFilter(final String format) {
		super();
		this.format = format;
	}

	public boolean isAccepted(Object value) {
    	if (value == null) return false;
    	
    	if (value instanceof Number) {
    		Number number = (Number)value;
    		return super.isAccepted(Double.valueOf(number.doubleValue()));
    	}
    	
        NumberValue numValue = (NumberValue) value;
        
        // Bug 12098 - Distribution and Utilization columns are not filtered correctly 
        return super.isAccepted(figureOutFormat(numValue));
    }
	
	/**
	 * Returns the value that is going to be used for filtering purposes.<p>
	 * 
	 * Based on "config.xml" property named "format", a Column may be set to display percentages.   In this situation the<br> 
	 * value displayed is not the original raw numeric value.  <p>
	 * 
	 * When <b><code>format="percent" </code></b> a raw value is a decimal number usually between 0 and 1.  On the other hand, a display value will represent a percentage number between 0 and 100
	 * plus a "%" symbol at the end<p>
	 * 
	 * This method will check <code>format</code> in order to return the right value used during filtering.
	 *  
	 * @param numValue original raw numeric value.
	 * @return modified value affected by its format.
	 */
	private Double figureOutFormat(final NumberValue numValue) {
		// In case the format is "percent" 
		if ("percent".equals(format)){ //$NON-NLS-1$
        	String cacheStringValue = numValue.toString();
        	int idx = cacheStringValue.indexOf("%"); //$NON-NLS-1$
        	if (idx != -1){
        		cacheStringValue = cacheStringValue.substring(0, idx);
        	}        	
        	return Double.valueOf(cacheStringValue);
        }
        
		// Default behaviour.
        return Double.valueOf(numValue.getNumber());
	}
}