UISwitcher.java

/*
 * Copyright (C) 2012 Wu Tong
 *
 * 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 org.cocoa4android.ui;

import org.cocoa4android.R;
import org.cocoa4android.cg.CGRect;

import android.graphics.Color;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ToggleButton;

public class UISwitcher extends UIControl {
	protected ToggleButton switcher = null;
	private boolean on = NO;
	
	private UIImage onImage;
	private UIImage offImage;
	
	public ToggleButton getSwitcher() {
		return switcher;
	}
	public void setSwitcher(ToggleButton switcher) {
		this.switcher = switcher;
	}
	public UISwitcher(){
		ToggleButton btn = new ToggleButton(context);
		btn.setTextColor(Color.TRANSPARENT);
		btn.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			
			@Override
			public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
				UISwitcher.this.setOn(isChecked, YES);
			}
		});
		this.setSwitcher(btn);
		btn.setFocusable(NO);
		this.setView(btn);
		this.setFrame(CGRectMake(0, 0, 0, 0));
		
		onImage = new UIImage(R.drawable.zz_c4a_switcher_on);
		offImage = new UIImage(R.drawable.zz_c4a_switcher_off);
		this.setOn(YES, YES);
	}
	
	// This class enforces a size appropriate for the control. The frame size is ignored.
	public UISwitcher(CGRect frame){
		this();
		this.setFrame(frame);
	}
	//FIXME no animation
	public void setOn(boolean on,boolean animated){
		if (on!=this.on) {
			this.on = on;
			if (on) {
				this.setBackgroundImage(onImage);
			}else{
				this.setBackgroundImage(offImage);
			}
			switcher.setChecked(on);
		}
	}
	public boolean isOn(){
		return on;
	}
	
	public void setFrame(CGRect frame){
		CGRect appFrame = UIScreen.mainScreen().applicationFrame();
		frame.size.width = appFrame.size.width*0.24f;
		frame.size.height = frame.size.width*0.35f;
		super.setFrame(frame);
	}
}