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Fixes: #2 BREAKING CHANGE: SwapperView now uses a generic View identifier. This makes using enums way easier. * Use `SwapperViewContainer` in XML instead of `SwapperView` * Call `swapperViewContainer.init(...)` to setup strongly typed `SwapperView`
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80
swapper/src/main/java/com/levibostian/swapper/SwapperViewContainer.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| package com.levibostian.swapper | ||
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| import android.annotation.TargetApi | ||
| import android.content.Context | ||
| import android.os.Build | ||
| import android.util.AttributeSet | ||
| import android.view.View | ||
| import android.widget.FrameLayout | ||
| import java.lang.ref.WeakReference | ||
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| class SwapperViewContainer : FrameLayout { | ||
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| private var attrs: AttributeSet? = null | ||
| private var defStyleAttr: Int = -1 | ||
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| internal val childrenExceptSwapperView: List<View> | ||
| get() { | ||
| val children: MutableList<View> = mutableListOf() | ||
| val swapperViewIndex = this.swapperViewChildIndex | ||
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| for (index in 0 until childCount) { | ||
| if (index != swapperViewIndex) { | ||
| children.add(getChildAt(index)) | ||
| } | ||
| } | ||
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| return children | ||
| } | ||
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| private val swapperViewChildIndex: Int? | ||
| get() { | ||
| for (index in 0 until childCount) { | ||
| val view = getChildAt(index) | ||
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| if (view is SwapperView<*>) { | ||
| return index | ||
| } | ||
| } | ||
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| return null | ||
| } | ||
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| constructor(context: Context) : this(context, null) | ||
| constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0) | ||
| constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super( | ||
| context, | ||
| attrs, | ||
| defStyleAttr | ||
| ) { | ||
| initialize(context, attrs, defStyleAttr) | ||
| } | ||
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| @TargetApi(Build.VERSION_CODES.LOLLIPOP) | ||
| constructor( | ||
| context: Context, | ||
| attrs: AttributeSet?, | ||
| defStyleAttr: Int, | ||
| defStyleRes: Int | ||
| ) : super(context, attrs, defStyleAttr, defStyleRes) { | ||
| initialize(context, attrs, defStyleAttr) | ||
| } | ||
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| private fun initialize(context: Context, attrs: AttributeSet?, defStyleAttr: Int) { | ||
| layoutParams = LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT) | ||
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| this.attrs = attrs | ||
| this.defStyleAttr = defStyleAttr | ||
| } | ||
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| fun <SwapperViewId : Any> init(views: Map<SwapperViewId, View>, swapTo: SwapperViewId): SwapperView<SwapperViewId> { | ||
| swapperViewChildIndex?.let { removeViewAt(it) } | ||
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| val swapperView = SwapperView<SwapperViewId>(context, attrs, defStyleAttr) | ||
| addView(swapperView) | ||
| swapperView.container = WeakReference(this) | ||
| swapperView.init(views, swapTo) | ||
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| return swapperView | ||
| } | ||
| } |