/*
GNU LESSER GENERAL PUBLIC LICENSE
Copyright (C) 2006 The XAMJ Project
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Contact info: lobochief@users.sourceforge.net
*/
package org.lobobrowser.html.js;
import org.lobobrowser.html.HtmlRendererContext;
import org.lobobrowser.js.AbstractScriptableDelegate;
public class History extends AbstractScriptableDelegate {
private final Window window;
History(final Window window) {
this.window = window;
}
public String getCurrent() {
final HtmlRendererContext ctx = this.window.getHtmlRendererContext();
return ctx != null ? ctx.getCurrentURL() : null;
}
public String getNext() {
final HtmlRendererContext ctx = this.window.getHtmlRendererContext();
return ctx != null ? ctx.getNextURL().orElse(null) : null;
}
public String getPrevious() {
final HtmlRendererContext ctx = this.window.getHtmlRendererContext();
return ctx != null ? ctx.getPreviousURL().orElse(null) : null;
}
public int getLength() {
final HtmlRendererContext ctx = this.window.getHtmlRendererContext();
return ctx != null ? ctx.getHistoryLength() : 0;
}
public void back() {
final HtmlRendererContext ctx = this.window.getHtmlRendererContext();
if (ctx != null) {
ctx.back();
}
}
public void forward() {
final HtmlRendererContext ctx = this.window.getHtmlRendererContext();
if (ctx != null) {
ctx.forward();
}
}
public void go(final int offset) {
final HtmlRendererContext ctx = this.window.getHtmlRendererContext();
if (ctx != null) {
ctx.moveInHistory(offset);
}
}
public void go(final String url) {
final HtmlRendererContext ctx = this.window.getHtmlRendererContext();
if (ctx != null) {
ctx.goToHistoryURL(url);
}
}
}