Example usage for com.google.gwt.accounts.client User login

Introduction

In this page you can find the example usage for com.google.gwt.accounts.client User login.

Prototype

public static final native String login(String scope) ;

Source Link

Document

Retrieves a valid authentication token.

Usage

From source file:com.google.gwt.gdata.sample.hellogdata.client.AccountsAuthSubAuthenticationDemo.java

License:Apache License

/**
 * Display the AuthSub authentication statuses in a
 * tabular fashion with the help of a GWT FlexTable widget.
 * We initialize an array containing the name, scope, icon
 * and url for each of the supported GData systems.
 * For each system a table row is added displaying the name,
 * page, link and icon, in addition to the AuthSub status
 * and a hyperlink for logging in or logging, as appropriate.
 * The User class contains the getStatus method which is used
 * to retrieve the authentication status for the current user
 * and for a given system (scope).//from w ww.  j  a v  a 2 s .c o  m
 */
private void showAuthSubStatus() {
    String[][] systems = new String[][] {
            new String[] { "Google Analytics", "https://www.google.com/analytics/feeds/", "gdata-analytics.png",
                    "http://code.google.com/apis/analytics/" },
            new String[] { "Google Base", "http://www.google.com/base/feeds/", "gdata-base.png",
                    "http://code.google.com/apis/base/" },
            new String[] { "Google Blogger", "http://www.blogger.com/feeds/", "gdata-blogger.png",
                    "http://code.google.com/apis/blogger/" },
            new String[] { "Google Calendar", "http://www.google.com/calendar/feeds/", "gdata-calendar.png",
                    "http://code.google.com/apis/calendar/" },
            new String[] { "Google Contacts", "http://www.google.com/m8/feeds/", "gdata-contacts.png",
                    "http://code.google.com/apis/contacts/" },
            new String[] { "Google Finance", "http://finance.google.com/finance/feeds/", "gdata-finance.png",
                    "http://code.google.com/apis/finance/" },
            new String[] { "Google Maps", "http://maps.google.com/maps/feeds/", "gdata-maps.png",
                    "http://code.google.com/apis/maps/documentation/mapsdata/" },
            new String[] { "Google Sidewiki", "http://www.google.com/sidewiki/feeds/", "gdata-sidewiki.png",
                    "http://code.google.com/apis/sidewiki/" } };
    for (int i = 0; i < systems.length; i++) {
        String[] sys = systems[i];
        final String scope = sys[1];
        mainPanel.insertRow(i);
        mainPanel.addCell(i);
        mainPanel.addCell(i);
        mainPanel.addCell(i);
        mainPanel.addCell(i);
        Image icon = new Image(sys[2]);
        mainPanel.setWidget(i, 0, icon);
        Label name = new HTML("<a href=\"" + sys[3] + "\">" + sys[0] + "</a>");
        mainPanel.setWidget(i, 1, name);
        Label statusLabel = new Label();
        Anchor actionLink = new Anchor();
        AuthSubStatus status = User.getStatus(scope);
        if (status == AuthSubStatus.LOGGED_IN) {
            statusLabel.setText("Logged in");
            actionLink.setText("Log out");
            actionLink.addClickHandler(new ClickHandler() {
                public void onClick(ClickEvent event) {
                    User.logout(scope);
                    refreshDemo();
                }
            });
        } else if (status == AuthSubStatus.LOGGED_OUT) {
            statusLabel.setText("Logged out");
            actionLink.setText("Log in");
            actionLink.addClickHandler(new ClickHandler() {
                public void onClick(ClickEvent event) {
                    User.login(scope);
                }
            });
        }
        mainPanel.setWidget(i, 2, statusLabel);
        mainPanel.setWidget(i, 3, actionLink);
    }
}

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