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fun ComponentDialog.setContent() replaces ScreenOverlayDialogFactory
With AndroidX 1.6.0, `ComponentDialog` serves as its own `LifecycleOwner` and `OnBackPressedDispatcherOwner`. To take advantage of this we introduce a new `ComponentDialog.setContent` extension function, deprecate `ScreenOverlayDialogFactory`, and deprecate our hooks for customizing `Dialog` back press handling. Related kdoc is improved, and a factory function is bound to `OverlayDialogFactory.Companion`.
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65 changes: 65 additions & 0 deletions
65
...re-android/src/main/java/com/squareup/workflow1/ui/container/ComponentDialogSetContent.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| package com.squareup.workflow1.ui.container | ||
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| import android.graphics.drawable.ColorDrawable | ||
| import android.util.TypedValue | ||
| import android.view.WindowManager.LayoutParams.FLAG_DIM_BEHIND | ||
| import androidx.activity.ComponentDialog | ||
| import androidx.activity.setViewTreeOnBackPressedDispatcherOwner | ||
| import com.squareup.workflow1.ui.Screen | ||
| import com.squareup.workflow1.ui.ViewEnvironment | ||
| import com.squareup.workflow1.ui.WorkflowUiExperimentalApi | ||
| import com.squareup.workflow1.ui.androidx.WorkflowLifecycleOwner | ||
| import com.squareup.workflow1.ui.show | ||
| import com.squareup.workflow1.ui.startShowing | ||
| import com.squareup.workflow1.ui.toViewFactory | ||
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| /** | ||
| * Given a [ComponentDialog], wrap it in an [OverlayDialogHolder] that can drive | ||
| * the Dialog's content via instances of a particular type of [ScreenOverlay]. | ||
| * | ||
| * Dialogs managed this way are compatible with | ||
| * [View.setBackHandler][com.squareup.workflow1.ui.setBackHandler], | ||
| * and honor the [OverlayArea] and [CoveredByModal] values placed in | ||
| * the [ViewEnvironment] by the standard [BodyAndOverlaysScreen] container. | ||
| */ | ||
| @WorkflowUiExperimentalApi | ||
| public fun <C : Screen, O : ScreenOverlay<C>> ComponentDialog.setContent( | ||
| overlay: O, | ||
| environment: ViewEnvironment | ||
| ): OverlayDialogHolder<O> { | ||
| val contentHolder = overlay.content.toViewFactory(environment) | ||
| .startShowing(overlay.content, environment, context) { view, doStart -> | ||
| view.setViewTreeOnBackPressedDispatcherOwner(this@setContent) | ||
| WorkflowLifecycleOwner.installOn(view) { | ||
| this@setContent.lifecycle | ||
| } | ||
| doStart() | ||
| } | ||
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| setCancelable(false) | ||
| setContentView(contentHolder.view) | ||
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| // Welcome to Android. Nothing workflow-related here, this is just how one | ||
| // finds the window background color for the theme. I sure hope it's better in Compose. | ||
| val maybeWindowColor = TypedValue() | ||
| context.theme.resolveAttribute(android.R.attr.windowBackground, maybeWindowColor, true) | ||
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| val background = | ||
| if (maybeWindowColor.type in TypedValue.TYPE_FIRST_COLOR_INT..TypedValue.TYPE_LAST_COLOR_INT) { | ||
| ColorDrawable(maybeWindowColor.data) | ||
| } else { | ||
| // If we don't at least set it to null, the window cannot go full bleed. | ||
| null | ||
| } | ||
| with(window!!) { | ||
| setBackgroundDrawable(background) | ||
| clearFlags(FLAG_DIM_BEHIND) | ||
| } | ||
|
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| return OverlayDialogHolder( | ||
| initialEnvironment = environment, | ||
| dialog = this, | ||
| ) { newOverlay, newEnvironment -> | ||
| contentHolder.show(newOverlay.content, newEnvironment) | ||
| } | ||
| } |
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25 changes: 25 additions & 0 deletions
25
.../core-android/src/main/java/com/squareup/workflow1/ui/container/FullScreenModalFactory.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| package com.squareup.workflow1.ui.container | ||
|
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| import android.content.Context | ||
| import androidx.activity.ComponentDialog | ||
| import com.squareup.workflow1.ui.Screen | ||
| import com.squareup.workflow1.ui.ViewEnvironment | ||
| import com.squareup.workflow1.ui.WorkflowUiExperimentalApi | ||
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| /** | ||
| * Default [OverlayDialogFactory] for the standard [FullScreenModal] rendering class. | ||
| * Nothing more than a direct call to [ComponentDialog.setContent]. | ||
| * | ||
| * To provide a custom binding for [FullScreenModal], see [OverlayDialogFactoryFinder]. | ||
| */ | ||
| @WorkflowUiExperimentalApi | ||
| internal class FullScreenModalFactory<C : Screen>() : OverlayDialogFactory<FullScreenModal<C>> { | ||
| override val type = FullScreenModal::class | ||
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| override fun buildDialog( | ||
| initialRendering: FullScreenModal<C>, | ||
| initialEnvironment: ViewEnvironment, | ||
| context: Context | ||
| ): OverlayDialogHolder<FullScreenModal<C>> = | ||
| ComponentDialog(context).setContent(initialRendering, initialEnvironment) | ||
| } |
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