SpinnerDialog.java

package mobi.monaca.framework.nativeui.component;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Locale;

import mobi.monaca.framework.bootloader.LocalFileBootloader;
import mobi.monaca.framework.nativeui.UIContext;
import mobi.monaca.framework.nativeui.UIUtil;
import mobi.monaca.framework.psedo.R;
import mobi.monaca.framework.util.MyLog;

import org.json.JSONArray;
import org.json.JSONException;

import android.app.Dialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.text.TextUtils;
import android.view.Gravity;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;

public class SpinnerDialog extends Dialog {
	private static final String TAG = SpinnerDialog.class.getSimpleName();

	public class SpinnerDialogException extends Exception{
		public SpinnerDialogException(String message) {
			super(message);
		}
	}

	private TextView mTitleView;

	public SpinnerDialog(UIContext context, JSONArray args) throws SpinnerDialogException {
		super(context.getApplicationContext(), android.R.style.Theme_Black_NoTitleBar_Fullscreen);

		getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
		requestWindowFeature(Window.FEATURE_NO_TITLE);


		String spinnerImagePath = null;
		try {
			spinnerImagePath = args.getString(0);
		} catch (JSONException e) {
			e.printStackTrace();
			throw new SpinnerDialogException(e.getMessage());
		}

		int numFrames = args.optInt(1, 1);
		if (numFrames < 1) {
			throw new SpinnerDialogException("Spinner frames must be greater than 0. You provided: " + numFrames);
		}

		int interval = args.optInt(2, 100);
		if(interval < 50){
			throw new SpinnerDialogException("Spinner interval needs to be greater than 50 milliseconds. You provided: " + interval);
		}

		String spinnerBackgroundColor = args.optString(3, "#000000");
		if(spinnerBackgroundColor.equalsIgnoreCase("null")){
			spinnerBackgroundColor = "#000000";
		}

		float backgroundOpacity = (float) args.optDouble(4, 0.8f);
		if(backgroundOpacity < 0.0 || backgroundOpacity > 1.0){
			throw new SpinnerDialogException("Spinner backgroundOpacity value must be in the range 0.0-1.0, you provided: " + backgroundOpacity);
		}

		try{
			ColorDrawable windowDrawable = new ColorDrawable( Color.parseColor(spinnerBackgroundColor));
			getWindow().setBackgroundDrawable(windowDrawable);
			windowDrawable.setAlpha(UIUtil.buildOpacity(backgroundOpacity));
		}catch (IllegalArgumentException e){
			throw new SpinnerDialogException("Spinner backgroundColor is invalid. You provided: " + spinnerBackgroundColor);
		}

		Bitmap fullSpinner = null;
		if (spinnerImagePath == null || spinnerImagePath.equalsIgnoreCase("null")) {
			InputStream spinnerInputSteam = getContext().getResources().openRawResource(R.drawable.spinner);
			fullSpinner = BitmapFactory.decodeStream(spinnerInputSteam);
			numFrames = 12;
		} else {
			if(!spinnerImagePath.toLowerCase(Locale.ENGLISH).endsWith("png")){
				throw new SpinnerDialogException("Spinner image is not a PNG format: " + spinnerImagePath);
			}

			String fullImagePath = context.resolve(spinnerImagePath);
			if (fullImagePath.startsWith("file:///android_asset/")) {
				try {
					fullSpinner = BitmapFactory.decodeStream(LocalFileBootloader.openAsset(context, fullImagePath));
				} catch (IOException e) {
					throw new SpinnerDialogException("Spinner image not found: " + fullImagePath);
				}
			} else {
				File imageFile = new File(fullImagePath);
				if(imageFile.exists()){
					fullSpinner = BitmapFactory.decodeFile(fullImagePath);
				}else{
					throw new SpinnerDialogException("Spinner image not found: " + fullImagePath);
				}

			}
		}

		final AnimationDrawable animationDrawable = new AnimationDrawable();

		float frameHeight = (float) fullSpinner.getHeight() / numFrames;
		MyLog.v(TAG, "fullSpinnerHeight: " + fullSpinner.getHeight());
		MyLog.v(TAG, "numFrames: " + numFrames);
		MyLog.v(TAG, "frameHeight: " + frameHeight);
		int y = 0;
		for (int i = 0; i < numFrames; i++) {
			y = Math.round(frameHeight * i);
			MyLog.v(TAG, "y: " + y);
			if(y + frameHeight > fullSpinner.getHeight()){
				frameHeight = fullSpinner.getHeight() - y;
				MyLog.v(TAG, "frameHeight2: " + frameHeight);
			}
			Bitmap frameBitmap = Bitmap.createBitmap(fullSpinner, 0, y, fullSpinner.getWidth(), Math.round(frameHeight));
			animationDrawable.addFrame(new BitmapDrawable(getContext().getResources(), frameBitmap), interval);
		}


		LinearLayout spinnerContent = new LinearLayout(context);
		spinnerContent.setOrientation(LinearLayout.VERTICAL);
		spinnerContent.setBackgroundColor(Color.TRANSPARENT);

		LinearLayout.LayoutParams imageViewParams = new LayoutParams(fullSpinner.getWidth(), Math.round(frameHeight));
		imageViewParams.gravity = Gravity.CENTER;

		ImageView imageView = new ImageView(context);
		imageView.setImageDrawable(animationDrawable);
		imageView.setScaleType(ScaleType.CENTER_INSIDE);
		spinnerContent.addView(imageView, imageViewParams);


		mTitleView = new TextView(getContext());

		float titleFontScale = (float) args.optDouble(7, 1.0f);
		int defaultFontSize = context.getFontSizeFromDip(Component.SPINNER_TEXT_DIP);
		float titleFontSize = titleFontScale * defaultFontSize;
		mTitleView.setTextSize(titleFontSize);

		String titleColor = args.optString(6, "#FFFFFF");
		if(titleColor.equalsIgnoreCase("null")){
			titleColor = "#FFFFFF";
		}

		try{
			mTitleView.setTextColor(Color.parseColor(titleColor));
		}catch (IllegalArgumentException e){
			throw new SpinnerDialogException("Spinner titleColor is invalid. You provided: " + titleColor);
		}

		LinearLayout.LayoutParams titleParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
		titleParams.gravity = Gravity.CENTER;
		titleParams.topMargin = (int) (titleFontSize * 1.5);
		spinnerContent.addView(mTitleView, titleParams);
		String title = args.optString(5);
		if (title != null && !TextUtils.isEmpty(title) && !title.equals("null")) {
			mTitleView.setText(title);
		}


		FrameLayout.LayoutParams spinnerContentParams = new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
		spinnerContentParams.gravity = Gravity.CENTER;
		setContentView(spinnerContent, spinnerContentParams);

		imageView.post(new Runnable() {
			@Override
			public void run() {
				animationDrawable.setOneShot(false);
				animationDrawable.start();
			}
		});
	}

	public void updateTitleText(String title){
		mTitleView.setText(title);
	}

}