Example usage for com.google.gwt.gears.client Factory getPermission

Introduction

In this page you can find the example usage for com.google.gwt.gears.client Factory getPermission.

Prototype

public native boolean getPermission(String siteName, String imageUrl, String extraMessage) ;

Source Link

Document

Lets a site manually trigger the Gears security dialog, with UI customizations.

Usage

From source file:org.sigmah.client.offline.sigmah.OnlineMode.java

License:Open Source License

/**
 * Verify if the usage of Google Gears has been approved by the user.<br>
 * If the permission hasn't been granted yet, this method will ask for
 * permission if <code>askForPermission</code> is true.<br>
 * <br>//from www.  j a v a 2 s  .  co m
 * Also, this method creates the database
 * @param askForPermission <code>true</code> to ask for permission to use
 * Google Gears (only if needed), <code>false</code> otherwise.
 */
private void checkPermission(boolean askForPermission) {
    final Factory factory = Factory.getInstance();

    if (factory != null && !databaseCheckIsDone) {

        if (!factory.hasPermission() && askForPermission)
            factory.getPermission("Sigmah", "desktopicons/48x48.png",
                    I18N.CONSTANTS.sigmahOfflineDescription());

        if (factory.hasPermission()) {
            localDatabase = factory.createDatabase();

            // Verifying the existence of the "status" table
            localDatabase.open(LOCAL_DATABASE_NAME);
            try {
                localDatabase.execute("SELECT online FROM status WHERE id = 1");

            } catch (DatabaseException ex) {
                // Most likely, the database doesn't exists.

                // Creating the database
                createStatusTable();

            } finally {
                try {
                    localDatabase.close();
                } catch (DatabaseException ex) {
                    Log.debug("Database closing error.", ex);
                }
            }

            databaseCheckIsDone = true;
        }
    }
}

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