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134 lines
4.3 KiB
JavaScript
134 lines
4.3 KiB
JavaScript
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/*
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* The facebook_onload statement is printed out in the PHP. If the user's logged in
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* status has changed since the last page load, then refresh the page to pick up
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* the change.
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*
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* This helps enforce the concept of "single sign on", so that if a user is signed into
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* Facebook when they visit your site, they will be automatically logged in -
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* without any need to click the login button.
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*
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* @param already_logged_into_facebook reports whether the server thinks the user
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* is logged in, based on their cookies
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*
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*/
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function facebook_onload(already_logged_into_facebook) {
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// user state is either: has a session, or does not.
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// if the state has changed, detect that and reload.
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FB.ensureInit(function() {
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FB.Connect.get_status().waitUntilReady( function( status ) {
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switch ( status ) {
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case FB.ConnectState.connected:
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loggedIn = true;
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break;
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case FB.ConnectState.appNotAuthorized:
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case FB.ConnectState.userNotLoggedIn:
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loggedIn = false;
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}
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});
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/* FB.Facebook.get_sessionState().waitUntilReady(function(session) {
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var is_now_logged_into_facebook = session ? true : false;
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// if the new state is the same as the old (i.e., nothing changed)
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// then do nothing
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if (is_now_logged_into_facebook == already_logged_into_facebook) {
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return;
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}
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// otherwise, refresh to pick up the state change
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refresh_page();
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}); */
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});
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}
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/*
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* Our <fb:login-button> specifies this function in its onlogin attribute,
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* which is triggered after the user authenticates the app in the Connect
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* dialog and the Facebook session has been set in the cookies.
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*/
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function facebook_onlogin_ready() {
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FB.Connect.ifUserConnected("/index.php?login", null);
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// In this app, we redirect the user back to index.php. The server will read
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// the cookie and see that the user is logged in, and will deliver a new page
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// with content appropriate for a logged-in user.
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//
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// However, a more complex app could use this function to do AJAX calls
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// and/or in-place replacement of page contents to avoid a full page refresh.
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// refresh_page();
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}
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/*
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* Do a page refresh after login state changes.
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* This is the easiest but not the only way to pick up changes.
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* If you have a small amount of Facebook-specific content on a large page,
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* then you could change it in Javascript without refresh.
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*/
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function refresh_page() {
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window.location = 'index.php';
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}
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/*
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* Prompts the user to grant a permission to the application.
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*/
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function facebook_prompt_permission(permission) {
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FB.ensureInit(function() {
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FB.Connect.showPermissionDialog(permission);
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});
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}
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function facebook_log_out(){
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FB.ensureInit(function() {
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FB.Connect.logout(function() { refresh_page(); });
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});
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}
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/*
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* Show the feed form. This would be typically called in response to the
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* onclick handler of a "Publish" button, or in the onload event after
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* the user submits a form with info that should be published.
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*
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*/
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function facebook_publish_feed_story(user_message) {
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// Load the feed form
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FB.ensureInit(function() {
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// FB.Connect.showFeedDialog(form_bundle_id, template_data);
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// FB.Connect.showFeedDialog(form_bundle_id, template_data, null, null, FB.FeedStorySize.shortStory, FB.RequireConnect.promptConnect);
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FB.Connect.streamPublish(user_message,'');
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// hide the "Loading feed story ..." div
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ge('feed_loading').style.visibility = "hidden";
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});
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}
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/*
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* If a user is not connected, then the checkbox that says "Publish To Facebook"
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* is hidden in the "add run" form.
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*
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* This function detects whether the user is logged into facebook but just
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* not connected, and shows the checkbox if that's true.
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*/
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function facebook_show_feed_checkbox() {
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FB.ensureInit(function() {
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FB.Connect.get_status().waitUntilReady(function(status) {
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if (status != FB.ConnectState.userNotLoggedIn) {
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// If the user is currently logged into Facebook, but has not
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// authorized the app, then go ahead and show them the feed dialog + upsell
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checkbox = ge('publish_fb_checkbox');
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if (checkbox) {
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checkbox.style.visibility = "visible";
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}
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}
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});
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});
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}
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