/*
|
* 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.ArrayList;
|
import java.util.Collections;
|
import java.util.List;
|
|
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);
|
List<ChartValue> list = new ArrayList<ChartValue>();
|
|
int maxSlices = 10;
|
int maxCount = Math.min(maxSlices - 1, values.size());
|
|
for (int i = 0; i < maxCount; i++) {
|
ChartValue value = values.get(i);
|
list.add(value);
|
}
|
if (values.size() >= maxSlices) {
|
float others = 0;
|
for (int i = maxSlices - 1; i < values.size(); i++) {
|
others += values.get(i).value;
|
}
|
ChartValue other = new ChartValue("other", others);
|
list.add(other);
|
}
|
|
StringBuilder colors = new StringBuilder("colors:[");
|
for (int i = 0; i < list.size(); i++) {
|
ChartValue value = list.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, "");
|
}
|
}
|
