// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package org.chromium.ui;

import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;

/**
 * The class provides the WindowAndroid's implementation which requires
 * Activity Instance.
 * Only instantiate this class when you need the implemented features.
 */
public class ActivityWindowAndroid extends WindowAndroid {
    // Constants used for intent request code bounding.
    private static final int REQUEST_CODE_PREFIX = 1000;
    private static final int REQUEST_CODE_RANGE_SIZE = 100;
    private static final String TAG = "ActivityWindowAndroid";

    private Activity mActivity;
    private int mNextRequestCode = 0;

    public ActivityWindowAndroid(Activity activity) {
        super(activity.getApplicationContext());
        mActivity = activity;
    }

    @Override
    public boolean showIntent(Intent intent, IntentCallback callback, int errorId) {
        int requestCode = REQUEST_CODE_PREFIX + mNextRequestCode;
        mNextRequestCode = (mNextRequestCode + 1) % REQUEST_CODE_RANGE_SIZE;

        try {
            mActivity.startActivityForResult(intent, requestCode);
        } catch (ActivityNotFoundException e) {
            return false;
        }

        mOutstandingIntents.put(requestCode, callback);
        mIntentErrors.put(requestCode, mApplicationContext.getString(errorId));

        return true;
    }

    @Override
    public boolean onActivityResult(int requestCode, int resultCode, Intent data) {
        IntentCallback callback = mOutstandingIntents.get(requestCode);
        mOutstandingIntents.delete(requestCode);
        String errorMessage = mIntentErrors.remove(requestCode);

        if (callback != null) {
            callback.onIntentCompleted(this, resultCode,
                    mApplicationContext.getContentResolver(), data);
            return true;
        } else {
            if (errorMessage != null) {
                showCallbackNonExistentError(errorMessage);
                return true;
            }
        }
        return false;
    }

    @Override
    @Deprecated
    public Context getContext() {
        return mActivity;
    }
}