/*
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* Copyright 2011 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit.wicket.charting;
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import java.text.MessageFormat;
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/**
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* Builds an interactive line chart using the Visualization API.
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*
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* @author James Moger
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*
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*/
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public class GoogleLineChart extends GoogleChart {
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private static final long serialVersionUID = 1L;
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public GoogleLineChart(String tagId, String title, String keyName, String valueName) {
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super(tagId, title, keyName, valueName);
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}
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@Override
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protected void appendChart(StringBuilder sb) {
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String dName = "data_" + dataName;
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line(sb, MessageFormat.format("var {0} = new google.visualization.DataTable();", dName));
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line(sb, MessageFormat.format("{0}.addColumn(''string'', ''{1}'');", dName, keyName));
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line(sb, MessageFormat.format("{0}.addColumn(''number'', ''{1}'');", dName, valueName));
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line(sb, MessageFormat.format("{0}.addRows({1,number,0});", dName, values.size()));
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for (int i = 0; i < values.size(); i++) {
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ChartValue value = values.get(i);
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line(sb, MessageFormat.format("{0}.setValue({1,number,0}, 0, ''{2}'');", dName, i,
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value.name));
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line(sb, MessageFormat.format("{0}.setValue({1,number,0}, 1, {2,number,0.0});", dName,
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i, value.value));
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}
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String cName = "chart_" + dataName;
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line(sb, MessageFormat.format(
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"var {0} = new google.visualization.LineChart(document.getElementById(''{1}''));",
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cName, tagId));
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line(sb,
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MessageFormat
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.format("{0}.draw({1}, '{'width: {2,number,0}, height: {3,number,0}, pointSize: 4, chartArea:'{'left:20,top:20'}', vAxis: '{' textPosition: ''none'' '}', legend: ''none'', title: ''{4}'' '}');",
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cName, dName, width, height, title));
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line(sb, "");
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}
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}
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