Android Open Source - masterdetail-j2objc-swift Detail View Model

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2014 Kirk C. Vogen//from   w  w w  . j a  v a2 s  .  c  o m
 *
 * 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 masterdetail.viewmodel;

import java.util.Arrays;
import java.util.List;

import masterdetail.model.DetailEntry;
import masterdetail.service.DetailService;

/**
 * A view model for presenting detail items.
 */
public class DetailViewModel extends ViewModel {

    public static final String TITLE = "title";
    public static final String WORDS = "words";

    private String title;
  private String words;
  private DetailService detailService;
  private DetailEntry detailEntry = new DetailEntry();
  private String listDelimiter = System.getProperty("line.separator");

  public DetailViewModel(DetailService detailService) {
    this.detailService = detailService;
  }
  
  /**
   * Creates a new instance using the provided delimiter. The delimiter will be used to display
   * the content in the view. For example, using newline as a delimiter will present each word
   * on one line. Another view might wish to present the words as one line, so a space character
   * could be used.
   * 
   * @param detailService The service for detail item persistence
   * @param listDelimiter The delimiter.
   */
  public DetailViewModel(DetailService detailService, String listDelimiter) {
    this(detailService);
    this.listDelimiter = listDelimiter;
  }

    public void init(int id) {
    detailEntry = detailService.find(id);
    setTitle(detailEntry.getTitle());
    setWords(detailEntry.getWords());    
  }

    public String getTitle() {
    return title;
  }

  public void setTitle(String title) {
    firePropertyChange(TITLE, this.title, title);
    this.title = title;
  }
  
  public String getWords() {
    return words;
  }
  
  public void setWords(String words) {
    firePropertyChange(WORDS, this.words, words);
    this.words = words;
  }
  
  public void setWords(List<String> words) {
    if (words == null)
      return;
    
    StringBuilder content = new StringBuilder();
    for (String word : words) {
      content.append(word);
      content.append(listDelimiter);
    }
    
    setWords(content.toString());
  }

  public void save(String newTitle, String newWords) {
    title = newTitle;
    words = newWords;

    detailEntry.setTitle(title);
    
    detailEntry.setWords(Arrays.asList(words.split(System.getProperty("line.separator"))));
    
    detailService.update(detailEntry);
  }
}

Java Source Code List

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