xyseriescollection.java

java图形利器

     * @param series  the series (zero-based index).
     *
     * @return The item count.
     * 
     * @throws IllegalArgumentException if <code>series</code> is not in the
     *     range <code>0</code> to <code>getSeriesCount() - 1</code>.
     */
    public int getItemCount(int series) {
        // defer argument checking
        return getSeries(series).getItemCount();
    }

    /**
     * Returns the x-value for the specified series and item.
     *
     * @param series  the series (zero-based index).
     * @param item  the item (zero-based index).
     *
     * @return The value.
     */
    public Number getX(int series, int item) {
        XYSeries ts = (XYSeries) this.data.get(series);
        XYDataItem xyItem = ts.getDataItem(item);
        return xyItem.getX();
    }

    /**
     * Returns the starting X value for the specified series and item.
     *
     * @param series  the series (zero-based index).
     * @param item  the item (zero-based index).
     *
     * @return The starting X value.
     */
    public Number getStartX(int series, int item) {
        return this.intervalDelegate.getStartX(series, item);
    }

    /**
     * Returns the ending X value for the specified series and item.
     *
     * @param series  the series (zero-based index).
     * @param item  the item (zero-based index).
     *
     * @return The ending X value.
     */
    public Number getEndX(int series, int item) {
        return this.intervalDelegate.getEndX(series, item);
    }

    /**
     * Returns the y-value for the specified series and item.
     *
     * @param series  the series (zero-based index).
     * @param index  the index of the item of interest (zero-based).
     *
     * @return The value (possibly <code>null</code>).
     */
    public Number getY(int series, int index) {

        XYSeries ts = (XYSeries) this.data.get(series);
        XYDataItem xyItem = ts.getDataItem(index);
        return xyItem.getY();

    }

    /**
     * Returns the starting Y value for the specified series and item.
     *
     * @param series  the series (zero-based index).
     * @param item  the item (zero-based index).
     *
     * @return The starting Y value.
     */
    public Number getStartY(int series, int item) {
        return getY(series, item);
    }

    /**
     * Returns the ending Y value for the specified series and item.
     *
     * @param series  the series (zero-based index).
     * @param item  the item (zero-based index).
     *
     * @return The ending Y value.
     */
    public Number getEndY(int series, int item) {
        return getY(series, item);
    }

    /**
     * Tests this collection for equality with an arbitrary object.
     *
     * @param obj  the object (<code>null</code> permitted).
     *
     * @return A boolean.
     */
    public boolean equals(Object obj) {
        /* 
         * XXX
         *  
         * what about  the interval delegate...?
         * The interval width etc wasn't considered
         * before, hence i did not add it here (AS)
         * 
         */

        if (obj == this) {
            return true;
        }
        if (!(obj instanceof XYSeriesCollection)) {
            return false;
        }
        XYSeriesCollection that = (XYSeriesCollection) obj;
        return ObjectUtilities.equal(this.data, that.data);
    }
    
    /**
     * Returns a clone of this instance.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException if there is a problem.
     */
    public Object clone() throws CloneNotSupportedException {
        XYSeriesCollection clone = (XYSeriesCollection) super.clone();
        clone.data = (List) ObjectUtilities.deepClone(this.data);
        clone.intervalDelegate 
                = (IntervalXYDelegate) this.intervalDelegate.clone();
        return clone;
    }

    /**
     * Returns a hash code.
     * 
     * @return A hash code.
     */
    public int hashCode() {
        // Same question as for equals (AS)
        return (this.data != null ? this.data.hashCode() : 0);
    }
       
    /**
     * Returns the minimum x-value in the dataset.
     *
     * @param includeInterval  a flag that determines whether or not the
     *                         x-interval is taken into account.
     * 
     * @return The minimum value.
     */
    public double getDomainLowerBound(boolean includeInterval) {
        return this.intervalDelegate.getDomainLowerBound(includeInterval);
    }

    /**
     * Returns the maximum x-value in the dataset.
     *
     * @param includeInterval  a flag that determines whether or not the
     *                         x-interval is taken into account.
     * 
     * @return The maximum value.
     */
    public double getDomainUpperBound(boolean includeInterval) {
        return this.intervalDelegate.getDomainUpperBound(includeInterval);
    }

    /**
     * Returns the range of the values in this dataset's domain.
     *
     * @param includeInterval  a flag that determines whether or not the
     *                         x-interval is taken into account.
     * 
     * @return The range.
     */
    public Range getDomainBounds(boolean includeInterval) {
        if (includeInterval) {
            return this.intervalDelegate.getDomainBounds(includeInterval);
        }
        else {
            return DatasetUtilities.iterateDomainBounds(this, includeInterval);
        }
            
    }
    
    /**
     * Returns the interval width. This is used to calculate the start and end 
     * x-values, if/when the dataset is used as an {@link IntervalXYDataset}.  
     * 
     * @return The interval width.
     */
    public double getIntervalWidth() {
        return this.intervalDelegate.getIntervalWidth();
    }
    
    /**
     * Sets the interval width and sends a {@link DatasetChangeEvent} to all 
     * registered listeners.
     * 
     * @param width  the width (negative values not permitted).
     */
    public void setIntervalWidth(double width) {
        if (width < 0.0) {
            throw new IllegalArgumentException("Negative 'width' argument.");
        }
        this.intervalDelegate.setFixedIntervalWidth(width);
        fireDatasetChanged();
    }

    /**
     * Returns the interval position factor.  
     * 
     * @return The interval position factor.
     */
    public double getIntervalPositionFactor() {
        return this.intervalDelegate.getIntervalPositionFactor();
    }
    
    /**
     * Sets the interval position factor. This controls where the x-value is in
     * relation to the interval surrounding the x-value (0.0 means the x-value 
     * will be positioned at the start, 0.5 in the middle, and 1.0 at the end).
     * 
     * @param factor  the factor.
     */
    public void setIntervalPositionFactor(double factor) {
        this.intervalDelegate.setIntervalPositionFactor(factor);
        fireDatasetChanged();
    }
    
    /**
     * Returns whether the interval width is automatically calculated or not.
     * 
     * @return Whether the width is automatically calculated or not.
     */
    public boolean isAutoWidth() {
        return this.intervalDelegate.isAutoWidth();
    }

    /**
     * Sets the flag that indicates wether the interval width is automatically
     * calculated or not. 
     * 
     * @param b  a boolean.
     */
    public void setAutoWidth(boolean b) {
        this.intervalDelegate.setAutoWidth(b);
        fireDatasetChanged();
    }
    
}