📄 simplechartengine.java

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			}
			return ChartFactory.createStackedBarChart(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				CategoryModelToCategoryDataset((CategoryModel)model),
				getOrientation(chart.getOrient()), 
				chart.isShowLegend(), 
				chart.isShowTooltiptext(), true);
		}
	}

	/** stackedbar3d chart */
	private class StackedBar3d extends StackedBar {
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof CategoryModel)) {
				throw new UiException("model must be a org.zkoss.zul.CategoryModel");
			}
			return ChartFactory.createStackedBarChart3D(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				CategoryModelToCategoryDataset((CategoryModel)model),
				getOrientation(chart.getOrient()), 
				chart.isShowLegend(), 
				chart.isShowTooltiptext(), true);
		}
	}

	/** stackedarea chart */
	//note: cutting area coordinate is not correct.
	private class StackedArea extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else if (info instanceof CategoryItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeCategoryInfo(area, (CategoryItemEntity)info);
			} else if (info instanceof XYItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeXYInfo(area, (XYItemEntity) info);
			} else if (info instanceof TickLabelEntity) {
				area.setAttribute("entity", "CATEGORY");
				Integer seq = (Integer)chart.getAttribute("TICK_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("TICK_SEQ", seq);
				decodeTickLabelInfo(area, (TickLabelEntity) info, chart);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}

		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (model instanceof CategoryModel) {
				return ChartFactory.createStackedAreaChart(
					chart.getTitle(),
					chart.getXAxis(),
					chart.getYAxis(),
					CategoryModelToCategoryDataset((CategoryModel)model),
					getOrientation(chart.getOrient()), 
					chart.isShowLegend(), 
					chart.isShowTooltiptext(), true);
			} else if (model instanceof XYModel) {
				return ChartFactory.createStackedXYAreaChart(
					chart.getTitle(),
					chart.getXAxis(),
					chart.getYAxis(),
					XYModelToTableXYDataset((XYModel) model),
					getOrientation(chart.getOrient()), 
					chart.isShowLegend(), 
					chart.isShowTooltiptext(), true);
			} else {
				throw new UiException("model must be a org.zkoss.zul.CategoryModel or a org.zkoss.zul.XYModel");
			}
		}
	}

	/** waterfall chart */
	//note: cuttin area corrdinate is not correct.
	private class Waterfall extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else if (info instanceof CategoryItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeCategoryInfo(area, (CategoryItemEntity)info);
			} else if (info instanceof TickLabelEntity) {
				area.setAttribute("entity", "CATEGORY");
				Integer seq = (Integer)chart.getAttribute("TICK_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("TICK_SEQ", seq);
				decodeTickLabelInfo(area, (TickLabelEntity) info, chart);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof CategoryModel)) {
				throw new UiException("model must be a org.zkoss.zul.CategoryModel");
			}
			return ChartFactory.createWaterfallChart(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				CategoryModelToCategoryDataset((CategoryModel)model),
				getOrientation(chart.getOrient()), 
				chart.isShowLegend(), 
				chart.isShowTooltiptext(), true);
		}
	}

	/** polar chart */
	private class Polar extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof XYModel)) {
				throw new UiException("model must be a org.zkoss.zul.XYModel");
			}
			return ChartFactory.createPolarChart(
				chart.getTitle(),
				XYModelToXYDataset((XYModel)model),
				chart.isShowLegend(), 
				chart.isShowTooltiptext(), true);
		}
	}

	/** scatter chart */
	private class Scatter extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else if (info instanceof XYItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeXYInfo(area, (XYItemEntity)info);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof XYModel)) {
				throw new UiException("model must be a org.zkoss.zul.XYModel");
			}
			return ChartFactory.createScatterPlot(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				XYModelToXYDataset((XYModel)model),
				getOrientation(chart.getOrient()), 
				chart.isShowLegend(), 
				chart.isShowTooltiptext(), true);
		}
	}

	/** timeseries chart */
	private class TimeSeries extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else if (info instanceof XYItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeXYInfo(area, (XYItemEntity) info);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof XYModel)) {
				throw new UiException("model must be a org.zkoss.zul.XYModel");
			}
			return ChartFactory.createTimeSeriesChart(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				XYModelToTimeDataset((XYModel)model, chart),
				chart.isShowLegend(), 
				chart.isShowTooltiptext(), true);
		}
	}

	/** steparea chart */
	private class StepArea extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else if (info instanceof XYItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeXYInfo(area, (XYItemEntity)info);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof XYModel)) {
				throw new UiException("model must be a org.zkoss.zul.XYModel");
			}
			return ChartFactory.createXYStepAreaChart(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				XYModelToXYDataset((XYModel)model),
				getOrientation(chart.getOrient()), 
				chart.isShowLegend(), 
				chart.isShowTooltiptext(), true);
		}
	}

	/** step chart */
	private class Step extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else if (info instanceof XYItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeXYInfo(area, (XYItemEntity)info);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof XYModel)) {
				throw new UiException("model must be a org.zkoss.zul.XYModel");
			}
			return ChartFactory.createXYStepChart(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				XYModelToXYDataset((XYModel)model),
				getOrientation(chart.getOrient()), 
				chart.isShowLegend(), 
				chart.isShowTooltiptext(), true);
		}
	}
	
	/** histogram */
	private class Histogram extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else if (info instanceof XYItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeXYInfo(area, (XYItemEntity)info);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof XYModel)) {
				throw new UiException("model must be a org.zkoss.zul.XYModel");
			}
			return ChartFactory.createHistogram(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				(IntervalXYDataset)XYModelToXYDataset((XYModel)model),
				getOrientation(chart.getOrient()), 
				chart.isShowLegend(), 
				chart.isShowTooltiptext(), true);
		}
	}

	/** candlestick */
	private class Candlestick extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else if (info instanceof XYItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeXYInfo(area, (XYItemEntity)info);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof HiLoModel)) {
				throw new UiException("model must be a org.zkoss.zul.HiLoModel");
			}
			return ChartFactory.createCandlestickChart(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				HiLoModelToOHLCDataset((HiLoModel)model),
				chart.isShowLegend());
		}
	}

	/** highlow */
	private class Highlow extends ChartImpl {
		public void render(Chart chart, Area area, ChartEntity info) {
			if (info instanceof LegendItemEntity) {
				area.setAttribute("entity", "LEGEND");
				Integer seq = (Integer)chart.getAttribute("LEGEND_SEQ");
				seq = seq == null ? new Integer(0) : new Integer(seq.intValue()+1);
				chart.setAttribute("LEGEND_SEQ", seq);
				decodeLegendInfo(area, (LegendItemEntity)info, chart);
			} else if (info instanceof XYItemEntity) {
				area.setAttribute("entity", "DATA");
				decodeXYInfo(area, (XYItemEntity)info);
			} else {
				area.setAttribute("entity", "TITLE");
				if (chart.isShowTooltiptext()) {
					area.setTooltiptext(chart.getTitle());
				}
			}
		}
		public JFreeChart createChart(Chart chart) {
			ChartModel model = (ChartModel) chart.getModel();
			if (!(model instanceof HiLoModel)) {
				throw new UiException("model must be a org.zkoss.zul.HiLoModel");
			}
			return ChartFactory.createHighLowChart(
				chart.getTitle(),
				chart.getXAxis(),
				chart.getYAxis(),
				HiLoModelToOHLCDataset((HiLoModel)model),
				chart.isShowLegend());
		}
	}

	private PlotOrientation getOrientation(String orient) {
		return "horizontal".equals(orient) ?
			PlotOrientation.HORIZONTAL : PlotOrientation.VERTICAL;
	}
}
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