SocialWebClient

/**
    CONFIG VARS:
    public static final String PatternFBLogin      = "login";
    public static final String PatternFBSendLogin  = "skip_api_login";
    public static final String PatternFBShareLogin = "FBSuccessLogin";
    public static final String PatternTWShareLogin = "TWSuccessLogin";
        public static final String PatternGetUserId    = "mt://fbconnect/close/?userId=";
    public static final String PatternErrorCode    = "mt://fbconnect/close/?errorCode=";
**/


public class SocialWebClient extends WebViewClient{

    public static final String TAG = SocialWebClient.class.getSimpleName();
    private static final boolean DEBUG = Config.DEBUG;

    private static final Pattern patternUserId    = Pattern.compile( ".*(userId)+=([0-9]+)$" );
    private static final Pattern patternErrorCode = Pattern.compile( ".*(errorMessage)+=(\\w.*)$" );

    private boolean loadingFinished;
    private boolean redirect;
    public boolean userFbReady;
    public boolean errorCodeReady;
    public boolean userTwReady;
    private boolean userIdReady;
    private WebView webview;

    private ProgressDialog loader;
    private OnSocialWebClient listener;


    public SocialWebClient(WebView webview,OnSocialWebClient listener,ProgressDialog loader) {
        this.webview=webview;
        this.loader=loader;
        this.listener=listener;
    }

    public interface OnSocialWebClient {
        void onFacebookShareReady();
        void onTwitterShareReady();
        void onFacebookLoginReady(String userId);
        void onSeviceError(String msg);
    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {

        if (!loadingFinished)redirect = true;

        view.loadUrl(url);
        if(DEBUG)Log.d(TAG,"[WEB VIEW] shouldOverrideUrlLoading: URL: "+url);


        if(searchSubString(url, Config.PatternGetUserId)){
            if(DEBUG)Log.d(TAG,"[WEB VIEW] FACEBOOK USER READY");
            webview.stopLoading();
            webview.clearCache(true);
            String userId = getUserId(url);

            if(DEBUG)Log.d(TAG,"[WEB VIEW] USERID: "+userId);
            listener.onFacebookLoginReady(userId);
        }

        if(searchSubString(url, Config.PatternFBShareLogin)){
            if(DEBUG)Log.d(TAG,"[WEB VIEW] FACEBOOK SHARE READY");
            webview.stopLoading();
            webview.clearCache(true);

            listener.onFacebookShareReady();
        }

        if(searchSubString(url, Config.PatternTWShareLogin)){
            if(DEBUG)Log.d(TAG,"[WEB VIEW] TWITTER SHARE READY");
            webview.stopLoading();
            webview.clearCache(true);

            listener.onTwitterShareReady();
        }

        if(searchSubString(url, Config.PatternErrorCode)){
            webview.stopLoading();
            errorCodeReady=false;
            String msg = getMsg(url);

            if(DEBUG)Log.d(TAG,"[WEB VIEW] ERROR MSG: "+msg);
            listener.onSeviceError(msg);
        }

        return true;
    }

    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        if (DEBUG)Log.d(TAG, "[WEB VIEW] onPageStarted: URL: " + url);
        loadingFinished = false;
        showLoader();
        super.onPageStarted(view, url, favicon);
    }

    @Override
    public void onPageFinished(WebView view, String url) {
        if (DEBUG)Log.d(TAG, "[WEB VIEW] onPageFinished: URL: " + url);

        if (!redirect) loadingFinished = true;

        if (loadingFinished && !redirect) {
            dismissLoader();
        } else {
            redirect = false;
        }
        super.onPageFinished(view, url);
    }

    @Override
    public WebResourceResponse shouldInterceptRequest(WebView view, String url) {
        if(DEBUG)Log.d(TAG,"[WEB VIEW] shouldInterceptRequest: URL: "+url);
        return super.shouldInterceptRequest(view, url);
    }

    private boolean searchSubString (String full, String pattern){
        return full.toUpperCase().indexOf(pattern.toUpperCase()) != -1;
    }

    private String getUserId(String url) {
        final Matcher m = patternUserId.matcher(url);
        if ( m.matches())return m.group(2);
        return null;
    }

    private String getMsg(String url) {
        final Matcher m = patternErrorCode.matcher(URLDecoder.decode(url));
        if ( m.matches())return m.group(2);
        return null;
    }

}