ProjectActivity.java

package se.slide.timy;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.NavUtils;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;

import com.google.analytics.tracking.android.EasyTracker;

import se.slide.timy.db.DatabaseManager;
import se.slide.timy.model.Color;
import se.slide.timy.model.Project;

import java.util.List;

public class ProjectActivity extends FragmentActivity {

    public static final int ACTIVITY_CODE = 0;

    private int mPosition = 0;

    public static final String EXTRA_PROJECT_ID = "project_id";
    public static final String EXTRA_PROJECT_NAME = "project_name";
    public static final String EXTRA_PROJECT_COLOR_ID = "project_colorid";

    ColorAdapter mAdapter;
    ImageView mCheckmark;
    EditText mName;
    Project mProject;
    GridView mGridview;
    TextView mSelectColor;

    /*
     * (non-Javadoc)
     * @see android.support.v4.app.FragmentActivity#onCreate(android.os.Bundle)
     */
    @Override
    protected void onCreate(Bundle bundle) {
        super.onCreate(bundle);

        DatabaseManager.init(this);

        setContentView(R.layout.project_dialog);

        List<Color> colors = DatabaseManager.getInstance().getColors();

        Intent i = getIntent();

        if (i != null && i.hasExtra(EXTRA_PROJECT_ID)) {
            int id = i.getIntExtra(EXTRA_PROJECT_ID, -1);
            List<Project> projects = DatabaseManager.getInstance().getProject(id);

            if (projects.size() > 0)
                mProject = projects.get(0);
        }

        mName = (EditText) findViewById(R.id.name);

        if (mProject != null)
            mName.setText(mProject.getName());

        mGridview = (GridView) findViewById(R.id.gridview);
        mAdapter = new ColorAdapter(this, colors, mProject);
        mGridview.setAdapter(mAdapter);

        mGridview.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View v, int position, long id) {

                for (int i = 0; i < mGridview.getChildCount(); i++) {
                    View view = mGridview.getChildAt(i);
                    ImageView image = (ImageView) view.findViewById(R.id.checkmark);
                    image.setVisibility(View.INVISIBLE);
                }

                mCheckmark = (ImageView) v.findViewById(R.id.checkmark);
                mCheckmark.setVisibility(View.VISIBLE);

                mPosition = position;
            }
        });

        mSelectColor = (TextView) findViewById(R.id.select_color);
        if (colors == null || colors.size() < 1)
            mSelectColor.setText(R.string.no_color);

        getActionBar().setDisplayHomeAsUpEnabled(true);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.project_activity, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                // This ID represents the Home or Up button. In the case of this
                // activity, the Up button is shown. Use NavUtils to allow users
                // to navigate up one level in the application structure. For
                // more details, see the Navigation pattern on Android Design:
                //
                // http://developer.android.com/design/patterns/navigation.html#up-vs-back
                //
                // TODO: If Settings has multiple levels, Up should navigate up
                // that hierarchy.
                NavUtils.navigateUpFromSameTask(this);
                return true;
            case R.id.menu_cancel:
                finishActivity(RESULT_CANCELED);
                finish();
                return true;
            case R.id.menu_done:

                if (mName.getText().toString().trim().length() < 1)
                    return true;

                Color color = mAdapter.getColor(mPosition);
                String colorId = "1"; // Default color
                if (color != null)
                    colorId = color.getId();

                Intent result = new Intent();
                result.putExtra(EXTRA_PROJECT_NAME, mName.getText().toString());
                result.putExtra(EXTRA_PROJECT_COLOR_ID, colorId);

                if (mProject != null)
                    result.putExtra(EXTRA_PROJECT_ID, mProject.getId());

                setResult(RESULT_OK, result);
                finishActivity(RESULT_OK);
                finish();
                return true;
        }
        return super.onOptionsItemSelected(item);
    }
    
    @Override
    public void onStart() {
      super.onStart();
      EasyTracker.getInstance(this).activityStart(this);
    }

    @Override
    public void onStop() {
      super.onStop();
      EasyTracker.getInstance(this).activityStop(this);
    }

    public class ColorAdapter extends BaseAdapter {
        private Context mContext;
        private List<Color> mColors;
        private Project mProject;

        public ColorAdapter(Context c, List<Color> colors, Project project) {
            mContext = c;
            mColors = colors;
            mProject = project;
        }

        public Color getColor(int id) {
            if (mColors == null || mColors.size() == 0 || mColors.size() < id)
                return null;

            return mColors.get(id);
        }

        public int getCount() {
            return mColors.size();
        }

        public Object getItem(int position) {
            return null;
        }

        public long getItemId(int position) {
            return 0;
        }

        // create a new ImageView for each item referenced by the Adapter
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            View view;

            if (convertView == null) { // if it's not recycled, initialize some
                                       // attributes
                convertView = getLayoutInflater().inflate(R.layout.color_item, null);

                holder = new ViewHolder();
                holder.frame = (FrameLayout) convertView.findViewById(R.id.color);
                holder.checkmark = (ImageView) convertView.findViewById(R.id.checkmark);
                convertView.setTag(holder);

            } else {
                holder = (ViewHolder) convertView.getTag();
            }

            if (mProject != null && mColors.get(position).getId().equals(mProject.getColorId())) {
                holder.checkmark.setVisibility(View.VISIBLE);
                mCheckmark = holder.checkmark;
            }

            holder.frame.setBackgroundColor(android.graphics.Color.parseColor(mColors.get(position)
                    .getBackgroundColor()));

            return convertView;
        }

        /* private view holder class */
        private class ViewHolder {
            FrameLayout frame;
            ImageView checkmark;
        }

    }
}