Catenis API Client Plugin for Wordpress - Rating, Reviews, Demo & Download

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Free

Plugin Description

Catenis API Client for WordPress enables (JavaScript) code on WordPress pages to interact with the Catenis API.

Enabling the Catenis API client

To enable the Catenis API client for a given WordPress page, go to the page’s edit page and look for a section (meta box) named “Catenis API Client” below the page’s main editing panel. Make sure the section is expanded, and check the Load Catenis API Client checkbox.

You can then choose to override the global settings used for instantiating the Catenis API client on that given page, like using a different device ID and its associated API access secret. Otherwise, whatever is configured in the plugin’s global settings — configured under “Settings” | “Catenis API Client” — is going to be used.

Using the Catenis API client

Once enabled, a global JavaScript variable named ctnApiClient is made available on the page. That variable holds the instantiated Catenis API client object.

Use the ctnApiClient variable to call the Catenis API methods by invoking the corresponding method on that object.

For a reference of the available methods, please refer to the Catenis API JavaScript Client as it is functionally identical to the Catenis API Client for WordPress, except for notifications support and error handling.

Notifications support

The notification feature on Catenis API Client for WordPress is almost identical to the one found on the Catenis API JavaScript client. The two noticeable differences are:

1. The Catenis API client object can emit a comm-error event.
2. The open event emitted by the WebSocket notification channel object may return an error.

Please refer to the “Receiving Notifications” section below for detailed information on how to receive Catenis notifications from within WordPress pages.

Error handling

Errors that take place while calling the Catenis API methods are returned as standard JavaScript Error objects.

Receiving Notifications

= Instantiate WebSocket notification channel object

Create a WebSocket notification channel for a given Catenis notification event.

var wsNotifyChannel = ctnApiClient.createWsNotifyChannel(eventName);

Add listeners

Add event listeners to monitor activity on the notification channel.

ctnApiClient.on('comm-error', function (error) {
    // Error communicating with Catenis notification process
});

wsNotifyChannel.on('open', function (error) {
    if (error) {
        // Error establishing underlying WebSocket connection
    }
    else {
        // Notification channel successfully open
    }
});

wsNotifyChannel.on('error', function (error) {
    // Error in the underlying WebSocket connection
});

wsNotifyChannel.on('close', function (code, reason) {
    // Underlying WebSocket connection has been closed
});

wsNotifyChannel.on('notify', function (eventData) {
    // Received notification
});

Note: the ‘comm-error’ event is emitted by the Catenis API client object while all other events are emitted by the WebSocket notification channel object.

Open the notification channel

Open the WebSocket notification channel to start receiving notifications.

wsNotifyChannel.open(function (error) {
    if (err) {
        // Error sending command to open notification channel
    }
});

Close the notification channel

Close the WebSocket notification channel to stop receiving notifications.

wsNotifyChannel.close(function (error) {
    if (err) {
        // Error sending command to close notification channel
    }
});

Screenshots

1. 

   The plugin’s global settings menu

2. 

   The “Catenis API Client” meta box on a WordPress page’s edit page.

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