Preliminary charting classes for Google's Visualization API
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| | | /*
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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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| | |
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| | | import java.io.Serializable;
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| | | import java.util.ArrayList;
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| | | import java.util.List;
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| | |
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| | | import com.gitblit.utils.StringUtils;
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| | |
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| | | /**
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| | | * Abstract parent class for Google Charts built with the Visualization API.
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| | | * |
| | | * @author James Moger
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| | | * |
| | | */
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| | | public abstract class GoogleChart implements Serializable {
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| | | private static final long serialVersionUID = 1L;
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| | | final String tagId;
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| | | final String dataName;
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| | | final String title;
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| | | final String keyName;
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| | | final String valueName;
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| | | final List<ChartValue> values;
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| | | int width;
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| | | int height;
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| | | public GoogleChart(String tagId, String title, String keyName, String valueName) {
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| | | this.tagId = tagId;
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| | | this.dataName = StringUtils.getSHA1(title).substring(0, 8);
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| | | this.title = title;
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| | | this.keyName = keyName;
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| | | this.valueName = valueName;
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| | | values = new ArrayList<ChartValue>();
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| | | }
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| | | public void setWidth(int width) {
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| | | this.width = width;
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| | | }
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| | | public void setHeight(int height) {
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| | | this.height = height;
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| | | }
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| | | public void addValue(String name, int value) {
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| | | values.add(new ChartValue(name, value));
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| | | }
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| | | public void addValue(String name, float value) {
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| | | values.add(new ChartValue(name, value));
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| | | }
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| | | public void addValue(String name, double value) {
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| | | values.add(new ChartValue(name, (float) value));
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| | | }
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| | | protected abstract void appendChart(StringBuilder sb);
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| | | protected void line(StringBuilder sb, String line) {
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| | | sb.append(line);
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| | | sb.append('\n');
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| | | }
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| | | protected class ChartValue implements Serializable, Comparable<ChartValue> {
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| | |
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| | | private static final long serialVersionUID = 1L;
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| | | final String name;
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| | | final float value;
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| | | ChartValue(String name, float value) {
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| | | this.name = name;
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| | | this.value = value;
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| | | }
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| | | @Override
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| | | public int compareTo(ChartValue o) {
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| | | // sorts the dataset by largest value first
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| | | if (value > o.value) {
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| | | return -1;
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| | | } else if (value < o.value) {
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| | | return 1;
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| | | }
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| | | return 0;
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| | | }
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| | | }
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| | | }
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| | | /*
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| | | Copyright 2011 comSysto GmbH
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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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| | |
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| | | package com.gitblit.wicket.charting;
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| | |
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| | | import java.util.ArrayList;
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| | | import java.util.List;
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| | | import org.apache.wicket.markup.html.IHeaderContributor;
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| | | import org.apache.wicket.markup.html.IHeaderResponse;
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| | |
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| | | /**
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| | | * The Google Visualization API provides interactive JavaScript based charts and
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| | | * graphs. This class implements the JavaScript header necessary to display
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| | | * complete graphs and charts.
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| | | * |
| | | * @author James Moger
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| | | * |
| | | */
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| | | public class GoogleCharts implements IHeaderContributor {
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| | | private static final long serialVersionUID = 1L;
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| | | private List<GoogleChart> charts = new ArrayList<GoogleChart>();
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| | | public void addChart(GoogleChart chart) {
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| | | charts.add(chart);
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| | | }
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| | | @Override
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| | | public void renderHead(IHeaderResponse response) {
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| | | // add Google Chart JS API reference
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| | | response.renderJavascriptReference("https://www.google.com/jsapi");
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| | |
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| | | // prepare draw chart function
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| | | StringBuilder sb = new StringBuilder();
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| | | line(sb, "google.load(\"visualization\", \"1\", {packages:[\"corechart\"]});");
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| | | line(sb, "google.setOnLoadCallback(drawChart);");
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| | | line(sb, "function drawChart() {");
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| | |
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| | | // add charts to header
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| | | for (GoogleChart chart : charts) {
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| | | chart.appendChart(sb);
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| | | }
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| | |
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| | | // end draw chart function
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| | | line(sb, "}");
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| | | response.renderJavascript(sb.toString(), null);
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| | | }
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| | | private void line(StringBuilder sb, String line) {
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| | | sb.append(line);
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| | | sb.append('\n');
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| | | }
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| | | } |
New file |
| | |
| | | /*
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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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| | |
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| | | import java.text.MessageFormat;
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| | |
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| | | /**
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| | | * Builds an interactive line chart using the Visualization API.
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| | | * |
| | | * @author James Moger
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| | | * |
| | | */
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| | | public class GoogleLineChart extends GoogleChart {
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| | |
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| | | private static final long serialVersionUID = 1L;
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| | |
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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'}', 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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| | | } |
New file |
| | |
| | | /*
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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.
|
| | | * You may obtain a copy of the License at
|
| | | *
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| | | * http://www.apache.org/licenses/LICENSE-2.0
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| | | *
|
| | | * 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.
|
| | | */
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| | | package com.gitblit.wicket.charting;
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| | |
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| | | import java.text.MessageFormat;
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| | | import java.util.Collections;
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| | |
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| | | /**
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| | | * Builds an interactive pie chart using the Visualization API.
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| | | * |
| | | * @author James Moger
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| | | * |
| | | */
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| | | public class GooglePieChart extends GoogleChart {
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| | |
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| | | private static final long serialVersionUID = 1L;
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| | |
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| | | public GooglePieChart(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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| | |
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| | | @Override
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| | | protected void appendChart(StringBuilder sb) {
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| | | // create dataset
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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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| | |
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| | | Collections.sort(values);
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| | |
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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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| | |
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| | | // instantiate chart
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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.PieChart(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}, chartArea:'{'left:20,top:20'}', 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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| | | } |