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- /*
- * 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}, '{' title: ''{4}'', {5}, legend: '{' position:''{6}'' '}' '}');",
- cName, dName, width, height, title, colors.toString(), showLegend ? "right" : "none"));
- line(sb, "");
- }
- }
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