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);

        }

    }

}