package com.freerdp.freerdpcore.utils;

import android.annotation.TargetApi;

import android.content.ClipData;

import android.content.ClipboardManager;

import android.content.Context;

import android.os.Build.VERSION;

import android.os.Build.VERSION_CODES;

public abstract class ClipboardManagerProxy

{

	public static ClipboardManagerProxy getClipboardManager(Context ctx)

	{

		if (VERSION.SDK_INT < VERSION_CODES.HONEYCOMB)

			return new PreHCClipboardManager(ctx);

		else

			return new HCClipboardManager(ctx);

	}

	public abstract void setClipboardData(String data);

	public abstract void addClipboardChangedListener(OnClipboardChangedListener listener);

	public abstract void removeClipboardboardChangedListener(OnClipboardChangedListener listener);

	public static interface OnClipboardChangedListener {

		void onClipboardChanged(String data);

	}

	private static class PreHCClipboardManager extends ClipboardManagerProxy

	{

		public PreHCClipboardManager(Context ctx)

		{

		}

		@Override public void setClipboardData(String data)

		{

		}

		@Override public void addClipboardChangedListener(OnClipboardChangedListener listener)

		{

		}

		@Override

		public void removeClipboardboardChangedListener(OnClipboardChangedListener listener)

		{

		}

	}

	@TargetApi(11)

	private static class HCClipboardManager

	    extends ClipboardManagerProxy implements ClipboardManager.OnPrimaryClipChangedListener

	{

		private ClipboardManager mClipboardManager;

		private OnClipboardChangedListener mListener;

		public HCClipboardManager(Context ctx)

		{

			mClipboardManager = (ClipboardManager)ctx.getSystemService(Context.CLIPBOARD_SERVICE);

		}

		@Override public void setClipboardData(String data)

		{

			mClipboardManager.setPrimaryClip(

			    ClipData.newPlainText("rdp-clipboard", data == null ? "" : data));

		}

		@Override public void onPrimaryClipChanged()

		{

			ClipData clip = mClipboardManager.getPrimaryClip();

			String data = null;

			if (clip != null && clip.getItemCount() > 0)

			{

				CharSequence cs = clip.getItemAt(0).getText();

				if (cs != null)

					data = cs.toString();

			}

			if (mListener != null)

			{

				mListener.onClipboardChanged(data);

			}

		}

		@Override public void addClipboardChangedListener(OnClipboardChangedListener listener)

		{

			mListener = listener;

			mClipboardManager.addPrimaryClipChangedListener(this);

		}

		@Override

		public void removeClipboardboardChangedListener(OnClipboardChangedListener listener)

		{

			mListener = null;

			mClipboardManager.removePrimaryClipChangedListener(this);

		}

	}

}