// Copyright (C) 2011 The Android Open Source Project
//
// 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.admin;
import com.google.gwt.dom.client.Document;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.text.shared.Parser;
import com.google.gwt.text.shared.Renderer;
import com.google.gwt.user.client.ui.ValueBox;
import com.google.gwtexpui.globalkey.client.GlobalKey;
import java.io.IOException;
import java.text.ParseException;
public class RefPatternBox extends ValueBox<String> {
private static final Renderer<String> RENDERER = new Renderer<String>() {
public String render(String ref) {
return ref;
}
public void render(String ref, Appendable dst) throws IOException {
dst.append(render(ref));
}
};
private static final Parser<String> PARSER = new Parser<String>() {
public String parse(CharSequence text) throws ParseException {
String ref = text.toString();
if (ref.isEmpty()) {
throw new ParseException(Util.C.refErrorEmpty(), 0);
}
if (ref.charAt(0) == '/') {
throw new ParseException(Util.C.refErrorBeginSlash(), 0);
}
if (ref.charAt(0) == '^') {
if (!ref.startsWith("^refs/")) {
ref = "^refs/heads/" + ref.substring(1);
}
} else if (!ref.startsWith("refs/")) {
ref = "refs/heads/" + ref;
}
for (int i = 0; i < ref.length(); i++) {
final char c = ref.charAt(i);
if (c == '/' && 0 < i && ref.charAt(i - 1) == '/') {
throw new ParseException(Util.C.refErrorDoubleSlash(), i);
}
if (c == ' ') {
throw new ParseException(Util.C.refErrorNoSpace(), i);
}
if (c < ' ') {
throw new ParseException(Util.C.refErrorPrintable(), i);
}
}
return ref;
}
};
public RefPatternBox() {
super(Document.get().createTextInputElement(), RENDERER, PARSER);
addKeyPressHandler(GlobalKey.STOP_PROPAGATION);
addKeyPressHandler(new KeyPressHandler() {
@Override
public void onKeyPress(KeyPressEvent event) {
if (event.getCharCode() == ' ') {
event.preventDefault();
}
}
});
}
}