Android Open Source - bad List View Decorator

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License

The source code is released under:

Copyright (C) 2013 Madis Pink Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Softwa...

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Java Source Code

package com.madisp.bad.decor;
//w  w  w  .  j a va  2  s  . co  m
import android.text.TextUtils;
import android.util.TypedValue;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import com.madisp.bad.eval.BadConverter;
import com.madisp.bad.eval.Scope;
import com.madisp.bad.eval.Watcher;
import com.madisp.bad.expr.Expression;
import com.madisp.bad.expr.ExpressionFactory;
import com.madisp.bad.lib.BadLayoutFactory;
import com.madisp.bad.lib.R;
import com.madisp.bad.lib.ui.BadAdapter;

/**
 * Created with IntelliJ IDEA.
 * User: madis
 * Date: 5/9/13
 * Time: 2:03 PM
 */
public class ListViewDecorator extends BaseDecorator<ListView> {
  private int layout = -1;
  private String itemsExpr = "";

  public ListViewDecorator(ExpressionFactory expressionFactory) {
    super(expressionFactory);
  }

  @Override
  public int[] attrs() {
    return new int[] { R.attr.items, R.attr.itemClick, R.attr.itemLayout };
  }

  @Override
  public void decorate(final Scope scope, final int attr, final TypedValue tv, final ListView view) {
    if (attr == R.attr.itemLayout) {
      layout = tv.resourceId;
    } else if (attr == R.attr.items) {
      itemsExpr = tv.string.toString();
    } else if (attr == R.attr.itemClick) {
      final Expression expr = expressionFactory.buildExpression(tv.string.toString());
      view.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
          Scope scope = (Scope) view.getTag(R.id.tagScope);
          expr.value(scope); // don't care about return
        }
      });
    }
  }

  @Override
  public void apply(final Scope scope, final ListView view, final BadLayoutFactory layoutFactory) {
    if (layout != -1 && !TextUtils.isEmpty(itemsExpr)) {
      final Expression expr = expressionFactory.buildExpression(itemsExpr);
      final BadAdapter adapter = new BadAdapter(layout, layoutFactory, BadConverter.list(expr.value(scope)));
      view.setAdapter(adapter);
      expr.addWatcher(scope, new Watcher() {
        @Override
        public void fire(Scope scope) {
          adapter.notifyDataSetChanged();
        }
      });
    }
  }

  @Override
  public Class<ListView> clazz() {
    return ListView.class;
  }
}

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