Progress.java

package de.blau.android.dialogs;

import android.app.Dialog;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;

/**
 * ProgressDialog can't be styled, this rolls its own.
 * 
 * @author simon
 *
 */
public class Progress extends DialogFragment
{
	
	private static final String DEBUG_TAG = Progress.class.getSimpleName();
	
	public static final int PROGRESS_LOADING = 1;
	
	public static final int PROGRESS_DOWNLOAD = 2;
	
	public static final int PROGRESS_DELETING = 3;
	
	public static final int PROGRESS_SEARCHING = 4;
	
	public static final int PROGRESS_SAVING = 5;
	
	public static final int PROGRESS_OAUTH = 6;
	
	public static final int PROGRESS_UPLOADING = 7;
	
	public static final int PROGRESS_PRESET = 8;
	
	public static final int PROGRESS_RUNNING = 9;
	
	private int dialogType;
	
	static public void showDialog(FragmentActivity activity, int dialogType) {
		showDialog(activity, dialogType, null);
	}
	
	static public void showDialog(FragmentActivity activity, int dialogType, String tag) {
		dismissDialog(activity, dialogType, tag);

		FragmentManager fm = activity.getSupportFragmentManager();
	    Progress progressDialogFragment = newInstance(dialogType);
	    try {
	    	tag = getTag(dialogType) + (tag != null?"-"+tag:"");
	    	if (progressDialogFragment != null) {
	    		progressDialogFragment.show(fm, tag);
	    	} else {
	    		Log.e(DEBUG_TAG,"Unable to create dialog for value " + dialogType);
	    	}
	    } catch (IllegalStateException isex) {
	    	Log.e(DEBUG_TAG,"showDialog",isex);
	    }
	}
	
	static public void dismissDialog(FragmentActivity activity, int dialogType) {
		dismissDialog(activity, dialogType,null);
	}
	
	static public void dismissDialog(FragmentActivity activity, int dialogType, String tag) {
		FragmentManager fm = activity.getSupportFragmentManager();
		FragmentTransaction ft = fm.beginTransaction();
    	tag = getTag(dialogType) + (tag != null?"-"+tag:"");
	    Fragment fragment = fm.findFragmentByTag(tag);
	    try {
	    	if (fragment != null) {
	    		ft.remove(fragment);
		    	ft.commit(); 
	    	}
	    } catch (IllegalStateException isex) {
	    	Log.e(DEBUG_TAG,"dismissDialog",isex);
	    	// this is in general harmless and there is no real way of avoiding this 
	    	// except not to use progress dialogs at all, which however doesn't give
	    	// the user any reasonable amount of feed back
	    }
	}
	
	/**
	 * Dismiss all possible progress dialogs to stop them being recreated
	 * @param activity
	 */
	static public void dismissAll(FragmentActivity activity) {
		dismissDialog(activity,PROGRESS_LOADING);
		dismissDialog(activity,PROGRESS_DOWNLOAD);
		dismissDialog(activity,PROGRESS_DELETING);
		dismissDialog(activity,PROGRESS_SEARCHING);
		dismissDialog(activity,PROGRESS_SAVING);
		dismissDialog(activity,PROGRESS_OAUTH);
		dismissDialog(activity,PROGRESS_UPLOADING);
		dismissDialog(activity,PROGRESS_PRESET);
		dismissDialog(activity,PROGRESS_RUNNING);
	}
	
	private static String getTag(int dialogType) {
		switch (dialogType) {
		case PROGRESS_LOADING:
			return "dialog_progress_loading";
		case PROGRESS_DOWNLOAD:
			return "dialog_progress_download";
		case PROGRESS_DELETING:
			return "dialog_progress_deleting";
		case PROGRESS_SEARCHING:
			return "dialog_progress_searching";
		case PROGRESS_SAVING:
			return "dialog_progress_saving";
		case PROGRESS_OAUTH:
			return "dialog_progress_oauth";
		case PROGRESS_UPLOADING:
			return "dialog_progress_uploading";
		case PROGRESS_PRESET:
			return "dialog_progress_preset";
		case PROGRESS_RUNNING:
			return "dialog_progress_running";
		}
		return null;
	}
	
    static private Progress newInstance(final int dialogType) {
    	Progress f = new Progress();

        Bundle args = new Bundle();
        args.putSerializable("type", dialogType);

        f.setArguments(args);
        f.setShowsDialog(true);
        
        return f;
    }

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setCancelable(true);
        dialogType = (Integer) getArguments().getSerializable("type");
    }

    @NonNull
	@Override
    public Dialog onCreateDialog(Bundle savedInstanceState)
    {               
        return ProgressDialog.get(getActivity(), dialogType);
    }
}