Swift

Remove a Single Related Item from an Email

Demonstrates the Chilkat Email.DropRelatedItem method, which removes the related item at a given zero-based index. A related item is typically an embedded image or style sheet referenced from the HTML body (via a cid: link or Content-Location). This example adds a related style sheet, then removes it by index, printing the count before and after.

Background: Related items live in the message's multipart/related enclosure and are indexed from 0 to NumRelatedItems - 1. Removing one by index is useful when editing a received message — for example stripping a tracking pixel or an unwanted embedded image — while leaving the HTML body and any other related resources in place. To remove them all at once, use DropRelatedItems.

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Swift


func chilkatTest() {
    //  Demonstrates the DropRelatedItem method, which removes the related item at a given
    //  zero-based index.  A related item is typically an embedded image or style sheet
    //  referenced from the HTML body.

    let email = CkoEmail()!

    //  Set an HTML body that references a related style sheet by name (Content-Location).
    email.setHtmlBody(html: "<html><head><link rel=\"stylesheet\" href=\"styles.css\"/></head><body>Styled.</body></html>")

    //  Add the related item (becomes index 0).
    email.addRelatedString2(filenameInHtml: "styles.css", str: "body { color: navy; }", charset: "utf-8")
    print("NumRelatedItems before = \(email.numRelatedItems.intValue)")

    //  Remove the related item at index 0.
    email.dropRelatedItem(index: 0)

    print("NumRelatedItems after = \(email.numRelatedItems.intValue)")

}