1 files changed, 75 insertions, 0 deletions
diff --git a/src/main/java/com/gitblit/wicket/charting/GooglePieChart.java b/src/main/java/com/gitblit/wicket/charting/GooglePieChart.java
new file mode 100644
index 00000000..119a8248
--- /dev/null
+++ b/src/main/java/com/gitblit/wicket/charting/GooglePieChart.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2011 gitblit.com.
+ *
+ * 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.
+ */
+package com.gitblit.wicket.charting;
+
+import java.text.MessageFormat;
+import java.util.Collections;
+
+import com.gitblit.utils.StringUtils;
+
+/**
+ * Builds an interactive pie chart using the Visualization API.
+ * 
+ * @author James Moger
+ * 
+ */
+public class GooglePieChart extends GoogleChart {
+
+	private static final long serialVersionUID = 1L;
+
+	public GooglePieChart(String tagId, String title, String keyName, String valueName) {
+		super(tagId, title, keyName, valueName);
+	}
+
+	@Override
+	protected void appendChart(StringBuilder sb) {
+		// create dataset
+		String dName = "data_" + dataName;
+		line(sb, MessageFormat.format("var {0} = new google.visualization.DataTable();", dName));
+		line(sb, MessageFormat.format("{0}.addColumn(''string'', ''{1}'');", dName, keyName));
+		line(sb, MessageFormat.format("{0}.addColumn(''number'', ''{1}'');", dName, valueName));
+		line(sb, MessageFormat.format("{0}.addRows({1,number,0});", dName, values.size()));
+
+		Collections.sort(values);
+
+		StringBuilder colors = new StringBuilder("colors:[");
+		for (int i = 0; i < values.size(); i++) {
+			ChartValue value = values.get(i);
+			colors.append('\'');
+			colors.append(StringUtils.getColor(value.name));
+			colors.append('\'');
+			if (i < values.size() - 1) {
+				colors.append(',');
+			}
+			line(sb, MessageFormat.format("{0}.setValue({1,number,0}, 0, ''{2}'');", dName, i,
+					value.name));
+			line(sb, MessageFormat.format("{0}.setValue({1,number,0}, 1, {2,number,0.0});", dName,
+					i, value.value));
+		}
+		colors.append(']');
+
+		// instantiate chart
+		String cName = "chart_" + dataName;
+		line(sb, MessageFormat.format(
+				"var {0} = new google.visualization.PieChart(document.getElementById(''{1}''));",
+				cName, tagId));
+		line(sb,
+				MessageFormat
+						.format("{0}.draw({1}, '{'width: {2,number,0}, height: {3,number,0}, chartArea:'{'left:20,top:20'}', title: ''{4}'', {5} '}');",
+								cName, dName, width, height, title, colors.toString()));
+		line(sb, "");
+	}
+}
+\ No newline at end of file