# KAU :kpref-activity

KAU supports Preferences that are created without xmls and through AppCompat. 
The items are backed by a [FastAdapter](https://github.com/mikepenz/FastAdapter) and support [iicons](https://github.com/mikepenz/Android-Iconics)

![KPref Items Gif](https://raw.githubusercontent.com/AllanWang/Storage-Hub/master/kau/kau_kpref_items.gif)

The easiest way to create the settings is to extend `KPrefActivity`.

We will then override `onCreateKPrefs` to generate our adapter builder.

The adapter builder can easily add items using defined functions. 
Each item added extends one or more contracts to configure it.

The contracts are as follows:

Contract | Mandatory | Optional | Description
:--- | :--- | :--- | :---
`CoreAttributeContract` | `NA` | `textColor` `accentColor` | Defines stylings that are added in every item
`CoreContract` | `titleRes` | `descRes` `iicon` | Implemented by every item
`BaseContract` | `getter` `setter` | `enabler` `onClick` `onDisabledClick` | Implemented by every preference item
`KPrefColorContract` | `NA` | `showPreview` | Additional configurations for the color picker
`KPrefTextContract` | `NA` | `textGetter` | Additional configurations for the text item
`KPrefSubItemsContract` | `itemBuilder` | `NA` | Contains a new list for the adapter to load when clicked

The kpref items are as followed:

Item | Implements | Description
:--- | :--- | :---
`checkbox` | `CoreContract` `BaseContract` | Checkbox item; by default, clicking it will toggle the checkbox and the kpref
`colorPicker` | `CoreContract` `BaseContract` `KPrefColorContract` | Color picker item; by default, clicking it will open a dialog which will change the color (int)
`header` | `CoreContract` | Header; just a title that isn't clickable
`text` | `CoreContract` `BaseContract` `KPrefTextContract` | Text item; displays the kpref as a String on the right; does not have click implementation by default
`plainText` | `BaseContract` | Plain text item; like `text` but does not deal with any preferences directly, so it doesn't need a getter or setter
This can be used to display text or deal with preference that are completely handed within the click event (eg a dialog).
`subItems` | `CoreContract` `KPrefSubItemsContract` | Sub items; contains a new page for the activity to load when clicked
 
An example of the adapter builder:
 
```kotlin
override fun onCreateKPrefs(savedInstanceState: android.os.Bundle?): KPrefAdapterBuilder.() -> Unit = {
	
	textColor = { KPrefSample.textColor } // getter function so the new text color will be retrieved for every reload
	accentColor = { KPrefSample.accentColor }

	header(R.string.header)

	/**
	 * This is how the setup looks like with all the proper tags
	 */
	checkbox(title = R.string.checkbox_1, getter = { KPrefSample.check1 }, setter = { KPrefSample.check1 = it },
			builder = {
				descRes = R.string.desc
			})
			
	/**
	 * This is how it looks like without the tags
	 */
	checkbox(R.string.checkbox_3, { KPrefSample.check3 }, { KPrefSample.check3 = it }) {
		descRes = R.string.desc_dependent
		enabler = { KPrefSample.check2 }
		onDisabledClick = {
			itemView, _, _ ->
			itemView.context.toast("I am still disabled")
			true
		}
	}
}
```