AbstractDecoratorView.java

package jetbrains.mps.lang.editor.diagram.runtime.jetpad.views;

/*Generated by MPS */

import jetbrains.jetpad.projectional.view.GroupView;
import jetbrains.jetpad.model.property.Property;
import jetbrains.jetpad.model.property.ValueProperty;
import jetbrains.jetpad.model.collections.list.ObservableSingleItemList;
import jetbrains.jetpad.mapper.Mapper;
import jetbrains.jetpad.mapper.Synchronizers;
import jetbrains.jetpad.model.collections.list.ObservableList;
import jetbrains.jetpad.projectional.view.View;
import jetbrains.jetpad.projectional.diagram.util.SubList;

public abstract class AbstractDecoratorView extends GroupView {
  protected static final int SELECTION_SQUARE_HALF_WIDTH = 3;
  public final Property<Boolean> hasError = new ValueProperty<Boolean>(false);
  public final Property<Boolean> isSelected = new ValueProperty<Boolean>(false);

  protected ObservableSingleItemList<Boolean> errorDecorator = new ObservableSingleItemList<Boolean>();
  protected ObservableSingleItemList<Boolean> selectionDecorator = new ObservableSingleItemList<Boolean>();
  private GroupView myDecoratorsContainer = new GroupView();
  public AbstractDecoratorView() {
    children().add(myDecoratorsContainer);
    new Mapper<AbstractDecoratorView, AbstractDecoratorView>(this, this) {
      @Override
      protected void registerSynchronizers(Mapper.SynchronizersConfiguration configuration) {
        super.registerSynchronizers(configuration);
        configuration.add(Synchronizers.forProperty(hasError, new Runnable() {
          public void run() {
            if (hasError.get()) {
              errorDecorator.setItem(Boolean.TRUE);
            } else {
              errorDecorator.setItem(null);
            }
          }
        }));
        configuration.add(Synchronizers.forProperty(isSelected, new Runnable() {
          public void run() {
            if (isSelected.get()) {
              selectionDecorator.setItem(Boolean.TRUE);
            } else {
              selectionDecorator.setItem(null);
            }
          }
        }));
      }
    }.attachRoot();
  }
  protected ObservableList<View> childSubList() {
    return new SubList<View>() {
      protected ObservableList<View> getBaseList() {
        return myDecoratorsContainer.children();
      }
    };
  }
}