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A height auto growing text input bar for messaging apps written in Swift, adding accessories with simple configuration.

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lumiasaki/MessageInputBar

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MessageInputBar

What is it?

MessageInputBar is a simple text input bar implemented in modularized way, you can add any element you want to the bar at two types of location.

It provides some basic features like following:

  • Decouple action logic from input bar to element.
  • Handle with the height of input bar automatically.
  • Enhance capability of input bar by adding any element you want.

Example

How to use?

Create some elements then add them to input bar.

let inputBar = MessageInputBar()

// setup elements of input bar
do {
    let element = MessageInputElement(icon: .sfIconName("arrow.up.circle.fill"))
    element.enable = { $1.text.count > 0}
    element.action = { [weak self] element, inputBar in
        guard let `self` = self else {
            return
        }
        
        self.viewModel.sendMessage(text: inputBar.text)
        inputBar.resetText()
    }
    
    inputBar.add(element: element, at: .controlLocation)
}

do {
    let element = MessageInputElement(icon: .sfIconName("photo.fill"))
    element.action = { [weak self] element, inputBar in
        guard let `self` = self else {
            return
        }
        
        self.viewModel.selectPhoto()
    }
    
    inputBar.add(element: element, at: .functionLocation)
}

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A height auto growing text input bar for messaging apps written in Swift, adding accessories with simple configuration.

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