Fixed
Status Update
No update yet.
Comments
le...@google.com
Project: platform/frameworks/support
Branch: androidx-master-dev
commit 23a7d960caf43390a554700d3c56ada189a9d10e
Author: Louis Pullen-Freilich <lpf@google.com>
Date: Mon Aug 10 15:11:36 2020
IconButton / IconToggleButton API scrub
Test: ./gradlew updateApi
Bug:
Bug:
Relnote: "Adds enabled parameter to IconButton, and reorders parameters in IconToggleButton"
Change-Id: I0a9419b1a631cadad451395302ad87b7f9214f96
M ui/ui-material/api/current.txt
M ui/ui-material/api/public_plus_experimental_current.txt
M ui/ui-material/api/restricted_current.txt
M ui/ui-material/src/commonMain/kotlin/androidx/compose/material/IconButton.kt
https://android-review.googlesource.com/1394868
Branch: androidx-master-dev
commit 23a7d960caf43390a554700d3c56ada189a9d10e
Author: Louis Pullen-Freilich <lpf@google.com>
Date: Mon Aug 10 15:11:36 2020
IconButton / IconToggleButton API scrub
Test: ./gradlew updateApi
Bug:
Bug:
Relnote: "Adds enabled parameter to IconButton, and reorders parameters in IconToggleButton"
Change-Id: I0a9419b1a631cadad451395302ad87b7f9214f96
M ui/ui-material/api/current.txt
M ui/ui-material/api/public_plus_experimental_current.txt
M ui/ui-material/api/restricted_current.txt
M ui/ui-material/src/commonMain/kotlin/androidx/compose/material/IconButton.kt
ch...@google.com
1. We plan to support inheritance but we don't yet.
2. A is not reported nor is A transformed to add @Model behavior. This is a bug. We should report A as and error as well and, eventually, both should work and produce the classes with the expected semantics.
2. A is not reported nor is A transformed to add @Model behavior. This is a bug. We should report A as and error as well and, eventually, both should work and produce the classes with the expected semantics.
ap...@google.com
Project: platform/frameworks/support
Branch: androidx-master-dev
commit fcf76b3241844f18106d6e850004952046d4bfb6
Author: Leland Richardson <lelandr@google.com>
Date: Wed May 13 16:58:59 2020
Deprecate @Model
Relnote: “
@Model annotation is now deprecated. Use state and mutableStateOf as alternatives. This deprecation decision was reached after much careful discussion.
Justification
=============
Rationale includes but is not limited to:
- Reduces API surface area and concepts we need to teach
- More closely aligns with other comparable toolkits (Swift UI, React, Flutter)
- Reversible decision. We can always bring @Model back later.
- Removes corner-case usage and difficult to answer questions about configuring @Model as things we need to handle
- @Model data classes, equals, hashcode, etc.
- How do I have some properties “observed” and others not?
- How do I specify structural vs. referential equality to be used in observation?
- Reduces “magic” in the system. Would reduce the likelihood of someone assuming system was smarter than it is (ie, it knowing how to diff a list)
- Makes the granularity of observation more intuitive.
- Improves refactorability from variable -> property on class
- Potentially opens up possibilities to do hand-crafted State-specific optimizations
- More closely aligns with the rest of the ecosystem and reduces ambiguity towards immutable or us “embracing mutable state”
Migration Notes
===============
Almost all existing usages of @Model are fairly trivially transformed in one of two ways. The example below has a @Model class with two properties just for the sake of example, and has it being used in a composable.
```
@Model class Position(
var x: Int,
var y: Int
)
@Composable fun Example() {
var p = remember { Position(0, 0) }
PositionChanger(
position=p,
onXChange={ p.x = it }
onYChange={ p.y = it }
)
}
```
Alternative 1: Use State<OriginalClass> and create copies.
----------------------------------------------------------
This approach is made easier with Kotlin’s data classes. Essentially, make all previously `var` properties into `val` properties of a data class, and then use `state` instead of `remember`, and assign the state value to cloned copies of the original using the data class `copy(...)` convenience method.
It’s important to note that this approach only works when the only mutations to that class were done in the same scope that the `State` instance is created. If the class is internally mutating itself outside of the scope of usage, and you are relying on the observation of that, then the next approach is the one you will want to use.
```
data class Position(
val x: Int,
val y: Int
)
@Composable fun Example() {
var p by state { Position(0, 0) }
PositionChanger(
position=p,
onXChange={ p = p.copy(x=it) }
onYChange={ p = p.copy(y=it) }
)
}
```
Alternative 2: Use mutableStateOf and property delegates
--------------------------------------------------------
This approach is made easier with Kotlin’s property delegates and the `mutableStateOf` API which allows you to create MutableState instances outside of composition. Essentially, replace all `var` properties of the original class with `var` properties with `mutableStateOf` as their property delegate. This has the advantage that the usage of the class will not change at all, only the internal implementation of it. The behavior is not completely identical to the original example though, as each property is now observed/subscribed to individually, so the recompositions you see after this refactor could be more narrow (a good thing).
```
class Position(x: Int, y: Int) {
var x by mutableStateOf(x)
var y by mutableStateOf(y)
}
// source of Example is identical to original
@Composable fun Example() {
var p = remember { Position(0, 0) }
PositionChanger(
position=p,
onXChange={ p.x = it }
onYChange={ p.y = it }
)
}
```
“
Bug: 156546430
Bug: 152993135
Bug: 152050010
Bug: 148866188
Bug: 148422703
Bug: 148394427
Bug: 146362815
Bug: 146342522
Bug: 143413369
Bug: 135715219
Bug: 126418732
Bug: 147088098
Bug: 143263925
Bug: 139653744
Change-Id: I409e8c158841eae1dd548b33f1ec80bb609cba31
M compose/compose-compiler-hosted/integration-tests/src/test/java/androidx/compose/plugins/kotlin/frames/FrameDiagnosticTests.kt
M compose/compose-runtime/api/0.1.0-dev12.txt
M compose/compose-runtime/api/current.txt
M compose/compose-runtime/api/public_plus_experimental_0.1.0-dev12.txt
M compose/compose-runtime/api/public_plus_experimental_current.txt
M compose/compose-runtime/api/restricted_0.1.0-dev12.txt
M compose/compose-runtime/api/restricted_current.txt
M compose/compose-runtime/compose-runtime-benchmark/src/androidTest/java/androidx/compose/benchmark/ComposeBenchmark.kt
M compose/compose-runtime/compose-runtime-benchmark/src/androidTest/java/androidx/compose/benchmark/SiblingBenchmark.kt
M compose/compose-runtime/compose-runtime-benchmark/src/androidTest/java/androidx/compose/benchmark/dbmonster/DbMonster.kt
M compose/compose-runtime/compose-runtime-benchmark/src/androidTest/java/androidx/compose/benchmark/realworld4/RealWorld4_DataModels.kt
M compose/compose-runtime/samples/src/main/java/androidx/compose/samples/ModelSamples.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/FrameManager.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/Model.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/MutableState.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/Observe.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/Recompose.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/StableMarker.kt
M ui/integration-tests/benchmark/src/androidTest/java/androidx/ui/benchmark/test/ModelObserverBenchmark.kt
M ui/integration-tests/benchmark/src/androidTest/java/androidx/ui/benchmark/test/RadioGroupBenchmark.kt
M ui/integration-tests/demos/src/main/java/androidx/ui/demos/DemoColorPalette.kt
M ui/integration-tests/src/main/java/androidx/ui/integration/test/foundation/RectsInColumnSharedModelTestCase.kt
M ui/ui-android-view/integration-tests/android-view-demos/src/main/java/androidx/ui/androidview/demos/WebComponentActivity.kt
M ui/ui-animation/src/main/java/androidx/ui/animation/AnimatedValueEffects.kt
M ui/ui-animation/src/main/java/androidx/ui/animation/Transition.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/AndroidLayoutDrawTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/AndroidViewCompatTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/ClipTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/DrawShadowTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/ModelReadsTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/OpacityTest.kt
D ui/ui-core/src/androidTest/java/androidx/ui/core/test/ValueModel.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/WithConstraintsTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/res/ResourcesTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/semantics/SemanticsTests.kt
M ui/ui-core/src/main/java/androidx/ui/core/ModelObserver.kt
M ui/ui-core/src/main/java/androidx/ui/res/Resources.kt
M ui/ui-core/src/test/java/androidx/ui/core/selection/SelectionManagerDragTest.kt
M ui/ui-core/src/test/java/androidx/ui/core/selection/SelectionManagerLongPressDragTest.kt
M ui/ui-core/src/test/java/androidx/ui/core/selection/SelectionManagerTest.kt
M ui/ui-foundation/src/androidTest/java/androidx/ui/foundation/DeterminateProgressTest.kt
M ui/ui-layout/src/androidTest/java/androidx/ui/layout/test/ContainerTest.kt
M ui/ui-layout/src/androidTest/java/androidx/ui/layout/test/OnPositionedTest.kt
M ui/ui-material/api/0.1.0-dev12.txt
M ui/ui-material/api/current.txt
M ui/ui-material/api/public_plus_experimental_0.1.0-dev12.txt
M ui/ui-material/api/public_plus_experimental_current.txt
M ui/ui-material/api/restricted_0.1.0-dev12.txt
M ui/ui-material/api/restricted_current.txt
M ui/ui-material/integration-tests/material-demos/src/main/java/androidx/ui/material/demos/DynamicThemeActivity.kt
M ui/ui-material/src/androidTest/java/androidx/ui/material/DrawerTest.kt
M ui/ui-material/src/androidTest/java/androidx/ui/material/ProgressIndicatorTest.kt
M ui/ui-material/src/androidTest/java/androidx/ui/material/RadioGroupUiTest.kt
M ui/ui-material/src/main/java/androidx/ui/material/Color.kt
M ui/ui-material/src/main/java/androidx/ui/material/Scaffold.kt
M ui/ui-test/src/androidTest/java/androidx/ui/test/AndroidComposeTestCaseRunnerTest.kt
M ui/ui-test/src/androidTest/java/androidx/ui/test/MultipleComposeRootsTest.kt
M ui/ui-text/src/main/java/androidx/ui/text/CoreText.kt
M ui/ui-text/src/main/java/androidx/ui/text/CoreTextField.kt
https://android-review.googlesource.com/1311293
Branch: androidx-master-dev
commit fcf76b3241844f18106d6e850004952046d4bfb6
Author: Leland Richardson <lelandr@google.com>
Date: Wed May 13 16:58:59 2020
Deprecate @Model
Relnote: “
@Model annotation is now deprecated. Use state and mutableStateOf as alternatives. This deprecation decision was reached after much careful discussion.
Justification
=============
Rationale includes but is not limited to:
- Reduces API surface area and concepts we need to teach
- More closely aligns with other comparable toolkits (Swift UI, React, Flutter)
- Reversible decision. We can always bring @Model back later.
- Removes corner-case usage and difficult to answer questions about configuring @Model as things we need to handle
- @Model data classes, equals, hashcode, etc.
- How do I have some properties “observed” and others not?
- How do I specify structural vs. referential equality to be used in observation?
- Reduces “magic” in the system. Would reduce the likelihood of someone assuming system was smarter than it is (ie, it knowing how to diff a list)
- Makes the granularity of observation more intuitive.
- Improves refactorability from variable -> property on class
- Potentially opens up possibilities to do hand-crafted State-specific optimizations
- More closely aligns with the rest of the ecosystem and reduces ambiguity towards immutable or us “embracing mutable state”
Migration Notes
===============
Almost all existing usages of @Model are fairly trivially transformed in one of two ways. The example below has a @Model class with two properties just for the sake of example, and has it being used in a composable.
```
@Model class Position(
var x: Int,
var y: Int
)
@Composable fun Example() {
var p = remember { Position(0, 0) }
PositionChanger(
position=p,
onXChange={ p.x = it }
onYChange={ p.y = it }
)
}
```
Alternative 1: Use State<OriginalClass> and create copies.
----------------------------------------------------------
This approach is made easier with Kotlin’s data classes. Essentially, make all previously `var` properties into `val` properties of a data class, and then use `state` instead of `remember`, and assign the state value to cloned copies of the original using the data class `copy(...)` convenience method.
It’s important to note that this approach only works when the only mutations to that class were done in the same scope that the `State` instance is created. If the class is internally mutating itself outside of the scope of usage, and you are relying on the observation of that, then the next approach is the one you will want to use.
```
data class Position(
val x: Int,
val y: Int
)
@Composable fun Example() {
var p by state { Position(0, 0) }
PositionChanger(
position=p,
onXChange={ p = p.copy(x=it) }
onYChange={ p = p.copy(y=it) }
)
}
```
Alternative 2: Use mutableStateOf and property delegates
--------------------------------------------------------
This approach is made easier with Kotlin’s property delegates and the `mutableStateOf` API which allows you to create MutableState instances outside of composition. Essentially, replace all `var` properties of the original class with `var` properties with `mutableStateOf` as their property delegate. This has the advantage that the usage of the class will not change at all, only the internal implementation of it. The behavior is not completely identical to the original example though, as each property is now observed/subscribed to individually, so the recompositions you see after this refactor could be more narrow (a good thing).
```
class Position(x: Int, y: Int) {
var x by mutableStateOf(x)
var y by mutableStateOf(y)
}
// source of Example is identical to original
@Composable fun Example() {
var p = remember { Position(0, 0) }
PositionChanger(
position=p,
onXChange={ p.x = it }
onYChange={ p.y = it }
)
}
```
“
Bug: 156546430
Bug: 152993135
Bug: 152050010
Bug: 148866188
Bug: 148422703
Bug: 148394427
Bug: 146362815
Bug: 146342522
Bug: 143413369
Bug: 135715219
Bug: 126418732
Bug: 147088098
Bug: 143263925
Bug: 139653744
Change-Id: I409e8c158841eae1dd548b33f1ec80bb609cba31
M compose/compose-compiler-hosted/integration-tests/src/test/java/androidx/compose/plugins/kotlin/frames/FrameDiagnosticTests.kt
M compose/compose-runtime/api/0.1.0-dev12.txt
M compose/compose-runtime/api/current.txt
M compose/compose-runtime/api/public_plus_experimental_0.1.0-dev12.txt
M compose/compose-runtime/api/public_plus_experimental_current.txt
M compose/compose-runtime/api/restricted_0.1.0-dev12.txt
M compose/compose-runtime/api/restricted_current.txt
M compose/compose-runtime/compose-runtime-benchmark/src/androidTest/java/androidx/compose/benchmark/ComposeBenchmark.kt
M compose/compose-runtime/compose-runtime-benchmark/src/androidTest/java/androidx/compose/benchmark/SiblingBenchmark.kt
M compose/compose-runtime/compose-runtime-benchmark/src/androidTest/java/androidx/compose/benchmark/dbmonster/DbMonster.kt
M compose/compose-runtime/compose-runtime-benchmark/src/androidTest/java/androidx/compose/benchmark/realworld4/RealWorld4_DataModels.kt
M compose/compose-runtime/samples/src/main/java/androidx/compose/samples/ModelSamples.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/FrameManager.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/Model.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/MutableState.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/Observe.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/Recompose.kt
M compose/compose-runtime/src/commonMain/kotlin/androidx/compose/StableMarker.kt
M ui/integration-tests/benchmark/src/androidTest/java/androidx/ui/benchmark/test/ModelObserverBenchmark.kt
M ui/integration-tests/benchmark/src/androidTest/java/androidx/ui/benchmark/test/RadioGroupBenchmark.kt
M ui/integration-tests/demos/src/main/java/androidx/ui/demos/DemoColorPalette.kt
M ui/integration-tests/src/main/java/androidx/ui/integration/test/foundation/RectsInColumnSharedModelTestCase.kt
M ui/ui-android-view/integration-tests/android-view-demos/src/main/java/androidx/ui/androidview/demos/WebComponentActivity.kt
M ui/ui-animation/src/main/java/androidx/ui/animation/AnimatedValueEffects.kt
M ui/ui-animation/src/main/java/androidx/ui/animation/Transition.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/AndroidLayoutDrawTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/AndroidViewCompatTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/ClipTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/DrawShadowTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/ModelReadsTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/OpacityTest.kt
D ui/ui-core/src/androidTest/java/androidx/ui/core/test/ValueModel.kt
M ui/ui-core/src/androidTest/java/androidx/ui/core/test/WithConstraintsTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/res/ResourcesTest.kt
M ui/ui-core/src/androidTest/java/androidx/ui/semantics/SemanticsTests.kt
M ui/ui-core/src/main/java/androidx/ui/core/ModelObserver.kt
M ui/ui-core/src/main/java/androidx/ui/res/Resources.kt
M ui/ui-core/src/test/java/androidx/ui/core/selection/SelectionManagerDragTest.kt
M ui/ui-core/src/test/java/androidx/ui/core/selection/SelectionManagerLongPressDragTest.kt
M ui/ui-core/src/test/java/androidx/ui/core/selection/SelectionManagerTest.kt
M ui/ui-foundation/src/androidTest/java/androidx/ui/foundation/DeterminateProgressTest.kt
M ui/ui-layout/src/androidTest/java/androidx/ui/layout/test/ContainerTest.kt
M ui/ui-layout/src/androidTest/java/androidx/ui/layout/test/OnPositionedTest.kt
M ui/ui-material/api/0.1.0-dev12.txt
M ui/ui-material/api/current.txt
M ui/ui-material/api/public_plus_experimental_0.1.0-dev12.txt
M ui/ui-material/api/public_plus_experimental_current.txt
M ui/ui-material/api/restricted_0.1.0-dev12.txt
M ui/ui-material/api/restricted_current.txt
M ui/ui-material/integration-tests/material-demos/src/main/java/androidx/ui/material/demos/DynamicThemeActivity.kt
M ui/ui-material/src/androidTest/java/androidx/ui/material/DrawerTest.kt
M ui/ui-material/src/androidTest/java/androidx/ui/material/ProgressIndicatorTest.kt
M ui/ui-material/src/androidTest/java/androidx/ui/material/RadioGroupUiTest.kt
M ui/ui-material/src/main/java/androidx/ui/material/Color.kt
M ui/ui-material/src/main/java/androidx/ui/material/Scaffold.kt
M ui/ui-test/src/androidTest/java/androidx/ui/test/AndroidComposeTestCaseRunnerTest.kt
M ui/ui-test/src/androidTest/java/androidx/ui/test/MultipleComposeRootsTest.kt
M ui/ui-text/src/main/java/androidx/ui/text/CoreText.kt
M ui/ui-text/src/main/java/androidx/ui/text/CoreTextField.kt
Description
```
sealed class MyModel {
@androidx.compose.Model
data class A(var value: Int) : MyModel()
}
@androidx.compose.Model
data class B(var value: Int) : MyModel()
```
Observed behavior: the compilation fails only on class B with "Model objects do not support inheritance".
Expected behavior: the compilation fails for both A and B (or succeeds for both).
Q: Will inheritance be supported in the future?
Build: AI-192.6817.14.36.5959023, 201910230206,
AI-192.6817.14.36.5959023, JRE 1.8.0_212-release-1586-b4-5784211x64 JetBrains s.r.o, OS Mac OS X(x86_64) v10.15, screens 1280x800; Retina
AS: 4.0 Canary 1; Kotlin plugin: 1.3.60-eap-25; Android Gradle Plugin: 4.0.0-alpha01; Gradle: 5.6.1; NDK: from local.properties: (not specified), latest from SDK: (not found); LLDB: pinned revision 3.1 not found, latest from SDK: (package not found); CMake: from local.properties: (not specified), latest from SDK: (not found), from PATH: (not found)