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package com.mapbox.mapboxsdk.attribution;
import android.text.Html;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.style.URLSpan;
import java.util.LinkedHashSet;
import java.util.Set;
public class AttributionParser {
private final Set<Attribution> attributions = new LinkedHashSet<>();
private String attributionDataString;
private boolean withImproveMap;
private boolean withCopyrightSign;
private boolean withTelemetryAttribution;
private boolean withMapboxAttribution;
AttributionParser(String attributionDataString, boolean withImproveMap, boolean withCopyrightSign,
boolean withTelemetryAttribution, boolean withMapboxAttribution) {
this.attributionDataString = attributionDataString;
this.withImproveMap = withImproveMap;
this.withCopyrightSign = withCopyrightSign;
this.withTelemetryAttribution = withTelemetryAttribution;
this.withMapboxAttribution = withMapboxAttribution;
}
public Set<Attribution> getAttributions() {
return attributions;
}
public String getAttributionString() {
StringBuilder stringBuilder = new StringBuilder(withCopyrightSign ? "" : "© ");
int counter = 0;
for (Attribution attribution : attributions) {
counter++;
stringBuilder.append(attribution.getTitle());
if (counter != attributions.size()) {
stringBuilder.append(" / ");
}
}
return stringBuilder.toString();
}
void parse() {
parseAttributions();
addAdditionalAttributions();
}
private void parseAttributions() {
SpannableStringBuilder htmlBuilder = (SpannableStringBuilder) fromHtml(attributionDataString);
URLSpan[] urlSpans = htmlBuilder.getSpans(0, htmlBuilder.length(), URLSpan.class);
for (URLSpan urlSpan : urlSpans) {
parseUrlSpan(htmlBuilder, urlSpan);
}
}
private void parseUrlSpan(SpannableStringBuilder htmlBuilder, URLSpan urlSpan) {
String url = urlSpan.getURL();
if (isUrlSpanValid(url)) {
String title = parseAnchorValue(htmlBuilder, urlSpan);
attributions.add(new Attribution(title, url));
}
}
private boolean isUrlSpanValid(String url) {
return isValidForImproveThisMap(url) && isValidForMapbox(url);
}
private boolean isValidForImproveThisMap(String url) {
return withImproveMap || !url.equals("https://www.mapbox.com/map-feedback/");
}
private boolean isValidForMapbox(String url) {
return withMapboxAttribution || !url.equals("https://www.mapbox.com/about/maps/");
}
private String parseAnchorValue(SpannableStringBuilder htmlBuilder, URLSpan urlSpan) {
int start = htmlBuilder.getSpanStart(urlSpan);
int end = htmlBuilder.getSpanEnd(urlSpan);
int length = end - start;
char[] charKey = new char[length];
htmlBuilder.getChars(start, end, charKey, 0);
return stripCopyright(String.valueOf(charKey));
}
private String stripCopyright(String anchor) {
if (!withCopyrightSign && anchor.startsWith("© ")) {
anchor = anchor.substring(2, anchor.length());
}
return anchor;
}
private void addAdditionalAttributions() {
if (withTelemetryAttribution) {
String telemetryKey = "Telemetry Settings";
String telemetryLink = "https://www.mapbox.com/telemetry/";
attributions.add(new Attribution(telemetryKey, telemetryLink));
}
}
/**
* Convert a string to a spanned html representation.
*
* @param html the string to convert
* @return the spanned html representation
*/
private static Spanned fromHtml(String html) {
Spanned result;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
result = Html.fromHtml(html, Html.FROM_HTML_MODE_LEGACY);
} else {
result = Html.fromHtml(html);
}
return result;
}
public static class Options {
private boolean withImproveMap = true;
private boolean withCopyrightSign = true;
private boolean withTelemetryAttribution = false;
private boolean withMapboxAttribution = true;
private String[] attributionDataStringArray;
public Options withAttributionData(String... attributionData) {
this.attributionDataStringArray = attributionData;
return this;
}
public Options withImproveMap(boolean withImproveMap) {
this.withImproveMap = withImproveMap;
return this;
}
public Options withCopyrightSign(boolean withCopyrightSign) {
this.withCopyrightSign = withCopyrightSign;
return this;
}
public Options withTelemetryAttribution(boolean withTelemetryAttribution) {
this.withTelemetryAttribution = withTelemetryAttribution;
return this;
}
public Options withMapboxAttribution(boolean withMapboxAttribution) {
this.withMapboxAttribution = withMapboxAttribution;
return this;
}
public AttributionParser build() {
if (attributionDataStringArray == null) {
throw new IllegalStateException("Using builder without providing attribution data");
}
String fullAttributionString = parseAttribution(attributionDataStringArray);
AttributionParser attributionParser = new AttributionParser(
fullAttributionString,
withImproveMap,
withCopyrightSign,
withTelemetryAttribution,
withMapboxAttribution
);
attributionParser.parse();
return attributionParser;
}
private String parseAttribution(String[] attribution) {
StringBuilder builder = new StringBuilder();
for (String attr : attribution) {
if (!attr.isEmpty()) {
builder.append(attr);
}
}
return builder.toString();
}
}
}
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