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// Copyright 2008 Google Inc.
//
// 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.
package com.google.gerrit.client.changes;
import com.google.gerrit.client.data.ChangeInfo;
import com.google.gerrit.client.data.SingleListChangeInfo;
import com.google.gerrit.client.ui.Screen;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Hyperlink;
import java.util.List;
public abstract class AllSingleListScreen extends Screen {
protected static final String MIN_SORTKEY = "";
protected static final String MAX_SORTKEY = "z";
protected static final int pageSize = 25;
private ChangeTable table;
private ChangeTable.Section section;
protected Hyperlink prev;
protected Hyperlink next;
protected List<ChangeInfo> changes;
protected final String anchorPrefix;
protected boolean useLoadPrev;
protected String pos;
public AllSingleListScreen(final String title, final String anchorToken,
final String positionToken) {
super(title);
anchorPrefix = anchorToken;
useLoadPrev = positionToken.startsWith("p,");
pos = positionToken.substring(2);
}
@Override
public Object getScreenCacheToken() {
return anchorPrefix;
}
@Override
public Screen recycleThis(final Screen newScreen) {
final AllSingleListScreen o = (AllSingleListScreen) newScreen;
useLoadPrev = o.useLoadPrev;
pos = o.pos;
return this;
}
@Override
public void onLoad() {
if (table == null) {
table = new ChangeTable();
section = new ChangeTable.Section();
table.addSection(section);
table.setSavePointerId(anchorPrefix);
add(table);
prev = new Hyperlink(Util.C.pagedChangeListPrev(), true, "");
prev.setVisible(false);
next = new Hyperlink(Util.C.pagedChangeListNext(), true, "");
next.setVisible(false);
final HorizontalPanel buttons = new HorizontalPanel();
buttons.setStyleName("gerrit-ChangeTable-PrevNextLinks");
buttons.add(prev);
buttons.add(next);
add(buttons);
}
super.onLoad();
if (useLoadPrev) {
loadPrev();
} else {
loadNext();
}
}
protected abstract void loadPrev();
protected abstract void loadNext();
protected void display(final SingleListChangeInfo result) {
changes = result.getChanges();
if (!changes.isEmpty()) {
final ChangeInfo f = changes.get(0);
final ChangeInfo l = changes.get(changes.size() - 1);
prev.setTargetHistoryToken(anchorPrefix + ",p," + f.getSortKey());
next.setTargetHistoryToken(anchorPrefix + ",n," + l.getSortKey());
if (useLoadPrev) {
prev.setVisible(!result.isAtEnd());
next.setVisible(!MIN_SORTKEY.equals(pos));
} else {
prev.setVisible(!MAX_SORTKEY.equals(pos));
next.setVisible(!result.isAtEnd());
}
}
table.setAccountInfoCache(result.getAccounts());
section.display(result.getChanges());
table.finishDisplay(true);
}
}
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