// Copyright 2012 Google Inc. All Rights Reserved.
//
// 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.collide.shared.ot;
import com.google.collide.dto.DocOp;
import com.google.collide.dto.shared.DocOpFactory;
/**
* Helper to create document operations via a builder pattern.
*
*/
public class DocOpBuilder {
private DocOpCapturer capturer;
private final Runnable createCapturer;
public DocOpBuilder(final DocOpFactory factory, final boolean shouldCompact) {
createCapturer = new Runnable() {
@Override
public void run() {
capturer = new DocOpCapturer(factory, shouldCompact);
}
};
createCapturer.run();
}
/**
* Builds and returns the document operation, and prepares the builder for
* another building sequence.
*/
public DocOp build() {
DocOp op = capturer.getDocOp();
createCapturer.run();
return op;
}
/**
* Adds a delete component for the given {@code text} to the document
* operation being built.
*/
public DocOpBuilder delete(String text) {
capturer.delete(text);
return this;
}
/**
* Adds an insert component for the given {@code text} to the document
* operation being built.
*/
public DocOpBuilder insert(String text) {
capturer.insert(text);
return this;
}
/**
* Adds a retain component for the given number of characters to the document
* operation being built.
*/
public DocOpBuilder retain(int count, boolean hasTrailingNewline) {
capturer.retain(count, hasTrailingNewline);
return this;
}
/**
* Adds a retain line component for the given number of lines to the document
* operation being built.
*/
public DocOpBuilder retainLine(int lineCount) {
capturer.retainLine(lineCount);
return this;
}
}