SensorsAdapter.java

package com.saikali.android_skwissh.adapters;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.saikali.android_skwissh.R;
import com.saikali.android_skwissh.charts.SensorGraphViewBuilder;
import com.saikali.android_skwissh.objects.SkwisshSensorItem;
import com.saikali.android_skwissh.objects.SkwisshServerContent.SkwisshServerItem;

public class SensorsAdapter extends BaseExpandableListAdapter {

	public Context context;
	private List<SkwisshSensorItem> sensorsItems = new ArrayList<SkwisshSensorItem>();
	private LayoutInflater inflater;
	private Typeface tf;
	private SkwisshServerItem server;

	public SensorsAdapter(Context context, SkwisshServerItem server) {
		this.context = context;
		this.inflater = LayoutInflater.from(context);
		this.tf = Typeface.createFromAsset(context.getAssets(), "fonts/Oxygen.otf");
		this.server = server;
	}

	public SkwisshServerItem getServer() {
		return this.server;
	}

	@Override
	public boolean areAllItemsEnabled() {
		return true;
	}

	@Override
	public Object getChild(int gPosition, int cPosition) {
		return this.sensorsItems.get(gPosition);
	}

	@Override
	public long getChildId(int gPosition, int cPosition) {
		return gPosition;
	}

	@Override
	public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
		final SkwisshSensorItem sensor = (SkwisshSensorItem) this.getChild(groupPosition, childPosition);
		ChildViewHolder childViewHolder;

		if (convertView == null) {
			childViewHolder = new ChildViewHolder();
			convertView = this.inflater.inflate(R.layout.activity_serverdetail_mesure_item, null);
			childViewHolder.chartLayout = (LinearLayout) convertView.findViewById(R.id.chartLayout);
			convertView.setTag(childViewHolder);
		} else {
			childViewHolder = (ChildViewHolder) convertView.getTag();
		}

		View graphView = new SensorGraphViewBuilder(this.context, sensor).createGraphView();
		childViewHolder.chartLayout.removeAllViews();
		if (sensor.getGraphTypeName().equals("text")) {
			childViewHolder.chartLayout.addView(graphView);
		} else {
			double w = parent.getMeasuredWidth();
			double ratio = 0;
			if (parent.getMeasuredWidth() > parent.getMeasuredHeight()) {
				ratio = parent.getMeasuredWidth() / parent.getMeasuredHeight();
			} else {
				ratio = parent.getMeasuredHeight() / parent.getMeasuredWidth();
			}

			double h = w / (ratio * 1.5);

			childViewHolder.chartLayout.addView(graphView, (int) w, (int) h);
		}

		return convertView;
	}

	@Override
	public int getChildrenCount(int gPosition) {
		return 1;
	}

	@Override
	public Object getGroup(int gPosition) {
		return this.sensorsItems.get(gPosition);
	}

	@Override
	public int getGroupCount() {
		return this.sensorsItems.size();
	}

	@Override
	public long getGroupId(int gPosition) {
		return gPosition;
	}

	public void updateEntries() {
		this.sensorsItems = this.server.getSensors();
		this.notifyDataSetChanged();
	}

	@Override
	public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
		final SkwisshSensorItem sensor = (SkwisshSensorItem) this.getGroup(groupPosition);
		GroupViewHolder gholder;

		if (convertView == null) {
			gholder = new GroupViewHolder();
			convertView = this.inflater.inflate(R.layout.activity_serverdetail_sensor_item, null);
			gholder.sensorName = (TextView) convertView.findViewById(R.id.sensorName);
			convertView.setTag(gholder);
		} else {
			gholder = (GroupViewHolder) convertView.getTag();
		}
		gholder.sensorName.setText(sensor.getDisplayName());
		gholder.sensorName.setTypeface(this.tf);
		return convertView;
	}

	@Override
	public boolean hasStableIds() {
		return true;
	}

	@Override
	public boolean isChildSelectable(int groupPosition, int childPosition) {
		return true;
	}

	class GroupViewHolder {
		public TextView sensorName;
	}

	class ChildViewHolder {
		public LinearLayout chartLayout;
	}

}