content: /*
   * Copyright (C) 2014 Agens AS
   *
   * 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 no.agens.cassowarylayoutdemo;
  
  import android.app.Activity;
  import android.os.Bundle;
  import android.view.View;
  
  import no.agens.cassowarylayout.CassowaryLayout;
  import no.agens.cassowarylayout.ViewIdResolver;
  
  public class ProgrammaticDemoActivity extends Activity {
  
      private static String[] CONSTRAINTS = {
              "blue.x == 0",
              "blue.y == 0",
              "blue.width == 100dp",
              "blue.height == blue.width",
              "green.width == blue.width",
              "green.height == blue.height",
              "green.x == blue.y2",
              "green.y == blue.y2",
              "red.width == green.width",
              "red.height == green.height",
              "red.x == green.x2",
              "red.y == green.y2"
      };
  
      private CassowaryLayout cassowaryLayout;
  
      private View red;
      private View green;
      private View blue;
  
      private int nextId = 1000;
  
      private ViewIdResolver viewIdResolver = new ViewIdResolver() {
  
          @Override
          public int getViewIdByName(String viewName) {
              if ("red".equals(viewName)) {
                  return red.getId();
              } else if ("blue".equals(viewName)) {
                  return blue.getId();
              } else if ("green".equals(viewName)) {
                  return green.getId();
              }
              return 0;
          }
  
          @Override
          public String getViewNameById(int id) {
             if (id == red.getId()) {
                 return "red";
             } else if (id == blue.getId()) {
                 return "blue";
             } else if (id == green.getId()) {
                 return "green";
             }
             return "";
          }
      };
  
  
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
  
          cassowaryLayout = new CassowaryLayout(this, viewIdResolver);
  
          red = new View(this);
          // Each child view *MUST* have a unique ID
          red.setId(nextId++);
          red.setBackgroundColor(getResources().getColor(R.color.red));
          blue = new View(this);
          blue.setId(nextId++);
          blue.setBackgroundColor(getResources().getColor(R.color.blue));
          green = new View(this);
          green.setId(nextId++);
          green.setBackgroundColor(getResources().getColor(R.color.green));
  
          cassowaryLayout.addView(red);
          cassowaryLayout.addView(green);
          cassowaryLayout.addView(blue);
          cassowaryLayout.setupSolverAsync(CONSTRAINTS);
          setContentView(cassowaryLayout);
      }
  
  }
  