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Chatbot Bubble Widget

The Bubble Widget provides an elegant, customizable chat interface that sits at the bottom corner of your webpage. When clicked, it expands to reveal a full-featured chatbot interface for your users.

Quick Start​

Here's the minimum code required to implement the Bubble Widget:

<script type="module">
  import Agent from 'https://cdn.jsdelivr.net/npm/@agent-embed/js@latest/dist/web.js'
  Agent.initBubble({
    agentName: "your assistant name", //generated on the predictable dialogs app.
  });
</script>

Configuration Options​

Required Properties​

PropertyTypeDescription
agentNamestringSpecifies the Predictable Dialogs agent name or your custom agent name

Optional Properties​

PropertyTypeDescription
streambooleanDefault is true. A flag that indicates whether messages should be streamed.
persistSessionbooleanDefault is true. A flag that indicates whether the seession persists, if set to false a new session is started every time the chatbot loads. (Read more)
initialPromptstringInitial message displayed when chat opens (only used when server's initial response is disabled)
filterResponsefunction(response: string) => string - Function to process the AI's responses before display (see example).
onClosefunction() => void - Function executed when the chat popup closes
onOpenfunction() => void - Function executed when the chat popup opens
themeobjectContains customization properties for the widget's appearance
autoShowDelaynumberTime in milliseconds after which the chat opens automatically
previewMessageobjectConfiguration for the preview message bubble
onPreviewMessageClickfunction() => void - Function executed when preview message is clicked
apiHoststringPoints to the Predictable Dialogs backend or your custom backend

Internal Elements Styling​

To customize the appearance of elements within the chat interface itself (such as message bubbles, fonts, colors), use the "Theme" tab in the Predictable Dialogs app dashboard.

External Styling​

The widget's external appearance can be extensively customized using the theme property.

Theme Property Structure​

theme: {
  placement?: 'left' | 'right',
  button?: {
    size?: 'medium' | 'large',
    backgroundColor?: string,
    iconColor?: string,
    customIconSrc?: string,
    customCloseIconSrc?: string
  },
  previewMessage?: {
    backgroundColor?: string,
    textColor?: string,
    closeButtonBackgroundColor?: string,
    closeButtonIconColor?: string
  }
}

Positioning the Bubble​

Control where the bubble appears on your page using the placement option:

<script type="module">
  import Agent from 'https://cdn.jsdelivr.net/npm/@agent-embed/js@latest/dist/web.js'
  Agent.initBubble({
    agentName: "your assistant name",
    theme: {
      placement: 'left' // Places bubble in bottom-left corner (default is right)
    }
  });
</script>

Customizing the Bubble Appearance​

Changing Bubble Size​

<script type="module">
  import Agent from 'https://cdn.jsdelivr.net/npm/@agent-embed/js@latest/dist/web.js'
  Agent.initBubble({
    agentName: "your assistant name",
    theme: {
      button: {
        size: 'large', // Options: 'medium' (default) or 'large'
      }
    },
  });
</script>

Changing Bubble Background Color​

<script type="module">
  import Agent from 'https://cdn.jsdelivr.net/npm/@agent-embed/js@latest/dist/web.js'
  Agent.initBubble({
    agentName: "your assistant name",
    theme: {
      button: {
        backgroundColor: "#4CAF50", // Any valid CSS color value
      }
    },
  });
</script>

Customizing Bubble Icons​

<script type="module">
  import Agent from 'https://cdn.jsdelivr.net/npm/@agent-embed/js@latest/dist/web.js'
  Agent.initBubble({
    agentName: "your assistant name",
    theme: {
      button: {
        iconColor: "#007BFF",        // Color for default icons
        customIconSrc: "https://cdn.jsdelivr.net/npm/simple-icons@3.13.0/icons/airbnb.svg", // Custom open icon
        customCloseIconSrc: "https://unpkg.com/feather-icons@4.29.2/dist/icons/x.svg" // Custom close icon
      }
    },
  });
</script>

Tip: You can find attractive SVG icons at Feather Icons. To use an icon, simply replace the filename in the URL. For example, to use the "message-square" icon, the URL would be: https://unpkg.com/feather-icons@4.29.2/dist/icons/message-square.svg

Preview Message Configuration​

The preview message appears as a speech bubble connected to the chat button, providing a prompt to engage users.

Preview Message Sample

Adding a Basic Preview Message​

<script type="module">
  import Agent from 'https://cdn.jsdelivr.net/npm/@agent-embed/js@latest/dist/web.js'
  Agent.initBubble({
    agentName: "your assistant name",
    previewMessage: {
      message: "Need help? Tap here to chat with us!", // Text to display
      avatarUrl: "https://unpkg.com/feather-icons@4.29.2/dist/icons/user.svg", // Optional avatar
      autoShowDelay: 5000, // Delay in milliseconds before showing the message
    },
  });
</script>

Styling the Preview Message​

Here is an example styled preview message.

Custom Message Sample

<script type="module">
  import Agent from 'https://cdn.jsdelivr.net/npm/@agent-embed/js@latest/dist/web.js'
  Agent.initBubble({
    agentName: "your assistant name",
    previewMessage: {
      message: "Need help? Tap here to chat with us!",
      avatarUrl: "https://unpkg.com/feather-icons@4.29.2/dist/icons/user.svg",
      autoShowDelay: 5000,
    },
    theme: {
      previewMessage: { 
        backgroundColor: '#969F42', // Background color of message bubble
        textColor: '#ffffff', // Text color
        closeButtonBackgroundColor: '#969F42', // Color of close button background
        closeButtonIconColor: '#FFFFFF' // Color of close button icon
      },
    },
  });
</script>

Programmatic Control​

You can control the widget through JavaScript using the following methods:

MethodDescription
Agent.open()Opens the chat popup or bubble
Agent.close()Closes the chat popup or bubble
Agent.toggle()Toggles between open and closed states
Agent.showPreviewMessage()Shows the preview message
Agent.hidePreviewMessage()Hides the preview message

Example: Binding to HTML Elements​

<button onclick="Agent.open()">Chat Now</button>
<button onclick="Agent.close()">Close Chat</button>
<button onclick="Agent.toggle()">Toggle Chat</button>

Complete Configuration Example​

Here's an example showing most customization options:

<script type="module">
  import Agent from 'https://cdn.jsdelivr.net/npm/@agent-embed/js@latest/dist/web.js'
  
  Agent.initBubble({
    // Required properties
    agentName: "Support Assistant", //generated on the predictable dialogs app
    
    // Optional functionality
    initialPrompt: "Hello! How can I help you today?",
    filterResponse: (response) => response.replace(/\[internal\].*?\[\/internal\]/g, ''),
    onOpen: () => console.log("Chat opened"),
    onClose: () => console.log("Chat closed"),
    
    // Preview message
    previewMessage: {
      message: "Have questions? Chat with our support team!",
      avatarUrl: "https://unpkg.com/feather-icons@4.29.2/dist/icons/message-circle.svg",
      autoShowDelay: 3000,
    },
    onPreviewMessageClick: () => console.log("Preview message clicked"),
    
    // Styling customizations
    theme: {
      placement: 'right',
      button: {
        size: 'large',
        backgroundColor: "#007BFF",
        iconColor: "#FFFFFF",
        customIconSrc: "https://unpkg.com/feather-icons@4.29.2/dist/icons/message-square.svg",
        customCloseIconSrc: "https://unpkg.com/feather-icons@4.29.2/dist/icons/x.svg"
      },
      previewMessage: {
        backgroundColor: '#007BFF',
        textColor: '#FFFFFF',
        closeButtonBackgroundColor: '#0056b3',
        closeButtonIconColor: '#FFFFFF'
      }
    },
  });
</script>