/*
* Copyright 2010, 2011, 2012 mapsforge.org
*
* This program is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.mapsforge.map.rendertheme;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
/**
* An ExternalRenderTheme allows for customizing the rendering style of the map via an XML file.
*/
public class ExternalRenderTheme implements XmlRenderTheme {
private static final long serialVersionUID = 1L;
private final long lastModifiedTime;
private final File renderThemeFile;
/**
* @param renderThemeFile
* the XML render theme file.
* @throws FileNotFoundException
* if the file does not exist or cannot be read.
*/
public ExternalRenderTheme(File renderThemeFile) throws FileNotFoundException {
if (!renderThemeFile.exists()) {
throw new FileNotFoundException("file does not exist: " + renderThemeFile.getAbsolutePath());
} else if (!renderThemeFile.isFile()) {
throw new FileNotFoundException("not a file: " + renderThemeFile.getAbsolutePath());
} else if (!renderThemeFile.canRead()) {
throw new FileNotFoundException("cannot read file: " + renderThemeFile.getAbsolutePath());
}
this.lastModifiedTime = renderThemeFile.lastModified();
if (this.lastModifiedTime == 0L) {
throw new FileNotFoundException("cannot read last modified time: " + renderThemeFile.getAbsolutePath());
}
this.renderThemeFile = renderThemeFile;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
} else if (!(obj instanceof ExternalRenderTheme)) {
return false;
}
ExternalRenderTheme other = (ExternalRenderTheme) obj;
if (this.lastModifiedTime != other.lastModifiedTime) {
return false;
}
if (this.renderThemeFile == null) {
if (other.renderThemeFile != null) {
return false;
}
} else if (!this.renderThemeFile.equals(other.renderThemeFile)) {
return false;
}
return true;
}
@Override
public String getRelativePathPrefix() {
return this.renderThemeFile.getParent();
}
@Override
public InputStream getRenderThemeAsStream() throws FileNotFoundException {
return new FileInputStream(this.renderThemeFile);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (int) (this.lastModifiedTime ^ (this.lastModifiedTime >>> 32));
result = prime * result + ((this.renderThemeFile == null) ? 0 : this.renderThemeFile.hashCode());
return result;
}
}