package act.cli.util;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
* #L%
*/
import act.cli.CliContext;
import act.cli.view.CliView;
import act.util.PropertySpec;
import org.osgl.util.C;
import java.util.List;
/**
* Used to paginate table layout
*/
public class TableCursor implements CliCursor {
private List data;
private int pageSize;
private int pageNo;
private PropertySpec.MetaInfo propertySpec;
public TableCursor(List data, int pageSize, PropertySpec.MetaInfo propertySpec) {
this.data = data;
this.pageSize = pageSize;
this.propertySpec = propertySpec;
}
private List get() {
int history = pageSize * pageNo++;
if (history >= data.size()) {
return C.list();
}
return C.list(data).drop(history).take(pageSize);
}
@Override
public boolean hasNext() {
return pageSize * pageNo < data.size();
}
@Override
public void output(CliContext context) {
List list = get();
if (list.isEmpty()) {
context.session().removeCursor();
context.println("no cursor");
return;
} else {
CliView.TABLE.print(list, propertySpec, context);
}
}
@Override
public int records() {
return data.size();
}
}