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Commit a81539e

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mstniymstniy
committedNov 14, 2023
Initial commit: POC
·
v0.3.0v0.0.1
0 parents  commit a81539e

34 files changed

+757
-0
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‎.gitignore

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# Miscellaneous
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*.class
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*.lock
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*.log
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*.pyc
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*.swp
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.DS_Store
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.atom/
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.buildlog/
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.history
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.svn/
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# IntelliJ related
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*.iml
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*.ipr
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*.iws
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.idea/
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# Visual Studio Code related
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.classpath
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.project
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.settings/
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.vscode/*
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# Flutter repo-specific
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/bin/cache/
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/bin/internal/bootstrap.bat
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/bin/internal/bootstrap.sh
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/bin/mingit/
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/dev/benchmarks/mega_gallery/
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/dev/bots/.recipe_deps
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/dev/bots/android_tools/
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/dev/devicelab/ABresults*.json
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/dev/docs/doc/
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/dev/docs/api_docs.zip
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/dev/docs/flutter.docs.zip
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/dev/docs/lib/
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/dev/docs/pubspec.yaml
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/dev/integration_tests/**/xcuserdata
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/dev/integration_tests/**/Pods
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/packages/flutter/coverage/
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version
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analysis_benchmark.json
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# packages file containing multi-root paths
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.packages.generated
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# Flutter/Dart/Pub related
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**/doc/api/
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.dart_tool/
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.flutter-plugins
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.flutter-plugins-dependencies
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**/generated_plugin_registrant.dart
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.packages
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.pub-preload-cache/
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.pub-cache/
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.pub/
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build/
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flutter_*.png
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linked_*.ds
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unlinked.ds
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unlinked_spec.ds
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# Android related
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**/android/**/gradle-wrapper.jar
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.gradle/
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**/android/captures/
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**/android/gradlew
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**/android/gradlew.bat
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**/android/local.properties
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**/android/**/GeneratedPluginRegistrant.java
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**/android/key.properties
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*.jks
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# iOS/XCode related
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**/ios/**/*.mode1v3
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**/ios/**/*.mode2v3
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**/ios/**/*.moved-aside
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**/ios/**/*.pbxuser
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**/ios/**/*.perspectivev3
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**/ios/**/*sync/
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**/ios/**/.sconsign.dblite
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**/ios/**/.tags*
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**/ios/**/.vagrant/
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**/ios/**/DerivedData/
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**/ios/**/Icon?
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**/ios/**/Pods/
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**/ios/**/.symlinks/
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**/ios/**/profile
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**/ios/**/xcuserdata
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**/ios/.generated/
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**/ios/Flutter/.last_build_id
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**/ios/Flutter/App.framework
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**/ios/Flutter/Flutter.framework
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**/ios/Flutter/Flutter.podspec
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**/ios/Flutter/Generated.xcconfig
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**/ios/Flutter/ephemeral
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**/ios/Flutter/app.flx
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**/ios/Flutter/app.zip
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**/ios/Flutter/flutter_assets/
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**/ios/Flutter/flutter_export_environment.sh
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**/ios/ServiceDefinitions.json
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**/ios/Runner/GeneratedPluginRegistrant.*
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# macOS
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**/Flutter/ephemeral/
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**/Pods/
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**/macos/Flutter/GeneratedPluginRegistrant.swift
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**/macos/Flutter/ephemeral
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**/xcuserdata/
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# Windows
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**/windows/flutter/generated_plugin_registrant.cc
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**/windows/flutter/generated_plugin_registrant.h
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**/windows/flutter/generated_plugins.cmake
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# Linux
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**/linux/flutter/generated_plugin_registrant.cc
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**/linux/flutter/generated_plugin_registrant.h
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**/linux/flutter/generated_plugins.cmake
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# Coverage
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coverage/
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# Symbols
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app.*.symbols
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# Exceptions to above rules.
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!**/ios/**/default.mode1v3
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!**/ios/**/default.mode2v3
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!**/ios/**/default.pbxuser
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!**/ios/**/default.perspectivev3
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!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
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!/dev/ci/**/Gemfile.lock
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!.vscode/settings.json
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.fvm

‎.metadata

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# This file tracks properties of this Flutter project.
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# Used by Flutter tool to assess capabilities and perform upgrades etc.
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#
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# This file should be version controlled and should not be manually edited.
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version:
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revision: "367f9ea16bfae1ca451b9cc27c1366870b187ae2"
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channel: "stable"
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project_type: app
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# Tracks metadata for the flutter migrate command
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migration:
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platforms:
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- platform: root
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create_revision: 367f9ea16bfae1ca451b9cc27c1366870b187ae2
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base_revision: 367f9ea16bfae1ca451b9cc27c1366870b187ae2
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- platform: android
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create_revision: 367f9ea16bfae1ca451b9cc27c1366870b187ae2
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base_revision: 367f9ea16bfae1ca451b9cc27c1366870b187ae2
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# User provided section
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# List of Local paths (relative to this file) that should be
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# ignored by the migrate tool.
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#
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# Files that are not part of the templates will be ignored by default.
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unmanaged_files:
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- 'lib/main.dart'
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- 'ios/Runner.xcodeproj/project.pbxproj'

‎.vscode/settings.json

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{
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"dart.sdkPath": "~/fvm/versions/3.13.9/bin/cache/dart-sdk"
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}

‎analysis_options.yaml

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# This file configures the analyzer, which statically analyzes Dart code to
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# check for errors, warnings, and lints.
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#
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# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
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# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
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# invoked from the command line by running `flutter analyze`.
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# The following line activates a set of recommended lints for Flutter apps,
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# packages, and plugins designed to encourage good coding practices.
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include: package:flutter_lints/flutter.yaml
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linter:
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# The lint rules applied to this project can be customized in the
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# section below to disable rules from the `package:flutter_lints/flutter.yaml`
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# included above or to enable additional rules. A list of all available lints
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# and their documentation is published at https://dart.dev/lints.
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#
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# Instead of disabling a lint rule for the entire project in the
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# section below, it can also be suppressed for a single line of code
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# or a specific dart file by using the `// ignore: name_of_lint` and
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# `// ignore_for_file: name_of_lint` syntax on the line or in the file
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# producing the lint.
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rules:
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# avoid_print: false # Uncomment to disable the `avoid_print` rule
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# prefer_single_quotes: true # Uncomment to enable the `prefer_single_quotes` rule
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# Additional information about this file can be found at
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# https://dart.dev/guides/language/analysis-options

‎android/.gitignore

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gradle-wrapper.jar
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/.gradle
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/captures/
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/gradlew
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/gradlew.bat
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/local.properties
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GeneratedPluginRegistrant.java
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# Remember to never publicly share your keystore.
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# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
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key.properties
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**/*.keystore
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**/*.jks

‎android/app/build.gradle

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plugins {
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id "com.android.application"
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id "kotlin-android"
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id "dev.flutter.flutter-gradle-plugin"
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}
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def localProperties = new Properties()
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def localPropertiesFile = rootProject.file('local.properties')
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if (localPropertiesFile.exists()) {
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localPropertiesFile.withReader('UTF-8') { reader ->
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localProperties.load(reader)
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}
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}
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def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
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if (flutterVersionCode == null) {
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flutterVersionCode = '1'
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}
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def flutterVersionName = localProperties.getProperty('flutter.versionName')
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if (flutterVersionName == null) {
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flutterVersionName = '1.0'
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}
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android {
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namespace "com.example.computed_flutter"
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compileSdkVersion flutter.compileSdkVersion
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ndkVersion flutter.ndkVersion
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compileOptions {
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sourceCompatibility JavaVersion.VERSION_1_8
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targetCompatibility JavaVersion.VERSION_1_8
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}
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kotlinOptions {
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jvmTarget = '1.8'
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}
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sourceSets {
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main.java.srcDirs += 'src/main/kotlin'
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}
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defaultConfig {
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// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
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applicationId "com.example.computed_flutter"
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// You can update the following values to match your application needs.
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// For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
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minSdkVersion flutter.minSdkVersion
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targetSdkVersion flutter.targetSdkVersion
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versionCode flutterVersionCode.toInteger()
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versionName flutterVersionName
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}
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buildTypes {
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release {
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// TODO: Add your own signing config for the release build.
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// Signing with the debug keys for now, so `flutter run --release` works.
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signingConfig signingConfigs.debug
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}
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}
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}
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flutter {
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source '../..'
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}
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dependencies {}

‎android/app/src/debug/AndroidManifest.xml

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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<!-- The INTERNET permission is required for development. Specifically,
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the Flutter tool needs it to communicate with the running application
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to allow setting breakpoints, to provide hot reload, etc.
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-->
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<uses-permission android:name="android.permission.INTERNET"/>
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</manifest>

‎android/app/src/main/AndroidManifest.xml

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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<application
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android:label="computed_flutter"
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android:name="${applicationName}"
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android:icon="@mipmap/ic_launcher">
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<activity
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android:name=".MainActivity"
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android:exported="true"
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android:launchMode="singleTop"
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android:theme="@style/LaunchTheme"
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android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
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android:hardwareAccelerated="true"
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android:windowSoftInputMode="adjustResize">
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<!-- Specifies an Android theme to apply to this Activity as soon as
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the Android process has started. This theme is visible to the user
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while the Flutter UI initializes. After that, this theme continues
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to determine the Window background behind the Flutter UI. -->
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<meta-data
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android:name="io.flutter.embedding.android.NormalTheme"
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android:resource="@style/NormalTheme"
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/>
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<intent-filter>
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<action android:name="android.intent.action.MAIN"/>
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<category android:name="android.intent.category.LAUNCHER"/>
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</intent-filter>
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</activity>
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<!-- Don't delete the meta-data below.
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This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
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<meta-data
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android:name="flutterEmbedding"
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android:value="2" />
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</application>
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</manifest>

‎android/app/src/main/kotlin/com/example/computed_flutter/MainActivity.kt

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package com.example.computed_flutter
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import io.flutter.embedding.android.FlutterActivity
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class MainActivity: FlutterActivity() {
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}

‎android/app/src/main/res/drawable-v21/launch_background.xml

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<?xml version="1.0" encoding="utf-8"?>
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<!-- Modify this file to customize your launch splash screen -->
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<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
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<item android:drawable="?android:colorBackground" />
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<!-- You can insert your own image assets here -->
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<!-- <item>
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<bitmap
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android:gravity="center"
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android:src="@mipmap/launch_image" />
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</item> -->
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</layer-list>

‎android/app/src/main/res/drawable/launch_background.xml

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<?xml version="1.0" encoding="utf-8"?>
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<!-- Modify this file to customize your launch splash screen -->
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<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
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<item android:drawable="@android:color/white" />
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<!-- You can insert your own image assets here -->
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<!-- <item>
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<bitmap
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android:gravity="center"
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android:src="@mipmap/launch_image" />
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</item> -->
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</layer-list>

‎android/app/src/main/res/mipmap-hdpi/ic_launcher.png

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‎android/app/src/main/res/mipmap-mdpi/ic_launcher.png

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‎android/app/src/main/res/mipmap-xhdpi/ic_launcher.png

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‎android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png

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‎android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png

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‎android/app/src/main/res/values-night/styles.xml

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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
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<style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
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<!-- Show a splash screen on the activity. Automatically removed when
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the Flutter engine draws its first frame -->
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<item name="android:windowBackground">@drawable/launch_background</item>
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</style>
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<!-- Theme applied to the Android Window as soon as the process has started.
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This theme determines the color of the Android Window while your
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Flutter UI initializes, as well as behind your Flutter UI while its
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running.
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This Theme is only used starting with V2 of Flutter's Android embedding. -->
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<style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
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<item name="android:windowBackground">?android:colorBackground</item>
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</style>
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</resources>

‎android/app/src/main/res/values/styles.xml

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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
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<style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
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<!-- Show a splash screen on the activity. Automatically removed when
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the Flutter engine draws its first frame -->
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<item name="android:windowBackground">@drawable/launch_background</item>
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</style>
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<!-- Theme applied to the Android Window as soon as the process has started.
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This theme determines the color of the Android Window while your
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Flutter UI initializes, as well as behind your Flutter UI while its
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running.
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This Theme is only used starting with V2 of Flutter's Android embedding. -->
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<style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
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<item name="android:windowBackground">?android:colorBackground</item>
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</style>
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</resources>

‎android/app/src/profile/AndroidManifest.xml

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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<!-- The INTERNET permission is required for development. Specifically,
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the Flutter tool needs it to communicate with the running application
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to allow setting breakpoints, to provide hot reload, etc.
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-->
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<uses-permission android:name="android.permission.INTERNET"/>
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</manifest>

‎android/build.gradle

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buildscript {
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ext.kotlin_version = '1.7.10'
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repositories {
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google()
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mavenCentral()
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}
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dependencies {
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classpath 'com.android.tools.build:gradle:7.3.0'
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classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
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}
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}
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allprojects {
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repositories {
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google()
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mavenCentral()
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}
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}
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rootProject.buildDir = '../build'
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subprojects {
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project.buildDir = "${rootProject.buildDir}/${project.name}"
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}
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subprojects {
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project.evaluationDependsOn(':app')
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}
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tasks.register("clean", Delete) {
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delete rootProject.buildDir
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}

‎android/gradle.properties

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org.gradle.jvmargs=-Xmx1536M
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android.useAndroidX=true
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android.enableJetifier=true

‎android/gradle/wrapper/gradle-wrapper.properties

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distributionBase=GRADLE_USER_HOME
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distributionPath=wrapper/dists
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zipStoreBase=GRADLE_USER_HOME
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zipStorePath=wrapper/dists
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distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-all.zip

‎android/settings.gradle

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pluginManagement {
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def flutterSdkPath = {
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def properties = new Properties()
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file("local.properties").withInputStream { properties.load(it) }
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def flutterSdkPath = properties.getProperty("flutter.sdk")
6+
assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
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return flutterSdkPath
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}
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settings.ext.flutterSdkPath = flutterSdkPath()
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includeBuild("${settings.ext.flutterSdkPath}/packages/flutter_tools/gradle")
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plugins {
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id "dev.flutter.flutter-gradle-plugin" version "1.0.0" apply false
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}
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}
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include ":app"
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apply from: "${settings.ext.flutterSdkPath}/packages/flutter_tools/gradle/app_plugin_loader.gradle"

‎example/main.dart

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import 'package:built_collection/built_collection.dart';
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import 'package:computed_flutter/computed_flutter.dart';
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import 'package:flutter/material.dart';
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final source = ValueNotifier(<int>[].toBuiltList());
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void main() {
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() async {
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source.value = [1, 2, -3, 4].toBuiltList();
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await Future.delayed(const Duration(seconds: 3));
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source.value = [1, 2, -3, -4].toBuiltList();
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await Future.delayed(const Duration(seconds: 3));
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source.value = [4, 5, 6].toBuiltList();
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await Future.delayed(const Duration(seconds: 3));
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source.value = [4, 5, 6].toBuiltList();
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}();
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print('a');
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runApp(const MyApp());
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}
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: 'Computed Flutter Demo',
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theme: ThemeData(
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colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
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useMaterial3: true,
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),
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home: const MyHomePage(title: 'Computed Flutter Demo'),
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);
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}
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}
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class MyHomePage extends StatelessWidget {
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const MyHomePage({super.key, required this.title});
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final String title;
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@override
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Widget build(BuildContext context) {
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final anyNegative =
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Computed(() => source.use.any((element) => element < 0));
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final maybeReversed = Computed(
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() => anyNegative.use ? source.use.reversed.toBuiltList() : source.use);
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final append0 = Computed(() {
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return maybeReversed.use.rebuild((p0) => p0.add(0));
54+
});
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return Scaffold(
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appBar: AppBar(
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backgroundColor: Theme.of(context).colorScheme.inversePrimary,
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title: Text(title),
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),
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body: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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ValueListenableBuilder(
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valueListenable: append0.asValueListenable,
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builder: (context, BuiltList<int> value, child) => Text(
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value.toString(),
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style: Theme.of(context).textTheme.headlineMedium,
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),
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)
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],
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),
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),
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);
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}
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}

‎lib/computed_flutter.dart

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export 'package:computed/computed.dart';
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import 'package:computed/computed.dart';
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import 'package:flutter/foundation.dart';
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import 'src/computed_flutter.dart';
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extension ComputedAsValueListenableExtension<T> on Computed<T> {
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ValueListenable<T> get asValueListenable =>
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ComputedAsValueListenableExtensionImpl<T>(this).asValueListenable;
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}
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extension ComputedValueListenableExtension<T> on ValueListenable<T> {
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T get use => ComputedValueListenableExtensionImpl<T>(this).use;
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}

‎lib/src/computed_flutter.dart

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import 'dart:async';
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import 'package:flutter/foundation.dart';
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import '../computed_flutter.dart';
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// ignore: implementation_imports
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import 'package:computed/src/computed.dart';
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class ComputedValueListenable<T> extends ValueListenable<T> {
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final ComputedImpl<T> _parent;
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final Set<VoidCallback> _listeners = {};
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StreamSubscription<T>? _parentSubscription;
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ComputedValueListenable(this._parent);
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void _onData(T data) {
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for (var listener in _listeners) {
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listener();
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}
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}
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@override
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void addListener(VoidCallback listener) {
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_listeners.add(listener);
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if (_listeners.length == 1) {
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// TODO: Use a lower-level integration instead of asStream
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// To keep a single source of truth for the listeners of the computation, inside ComputedImpl
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_parentSubscription = _parent.asStream.listen((event) => _onData(event));
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// ValueListenable does not propagate exceptions
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}
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}
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@override
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void removeListener(VoidCallback listener) {
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if (_listeners.remove(listener)) {
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if (_listeners.isEmpty) {
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_parentSubscription!.cancel();
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}
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}
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}
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@override
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T get value {
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return _parent.value;
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}
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}
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class ComputedAsValueListenableExtensionImpl<T> {
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final Computed<T> c;
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ComputedAsValueListenableExtensionImpl(this.c);
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ValueListenable<T> get asValueListenable {
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return ComputedValueListenable(c as ComputedImpl<T>);
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}
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}
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class ValueListenableDataSourceSubscription<T>
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implements DataSourceSubscription<T> {
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final void Function() voidCallback;
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final ValueListenable<T> v;
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ValueListenableDataSourceSubscription(this.v, void Function(T data) onData)
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: voidCallback = (() => onData(v.value)) {
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v.addListener(voidCallback);
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}
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@override
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Future<void> cancel() {
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v.removeListener(voidCallback);
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return Future.value();
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}
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@override
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bool get isPaused => false;
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@override
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void pause([Future<void>? resumeSignal]) {
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// TODO: implement pause
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throw UnimplementedError();
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}
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@override
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void resume() {
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// TODO: implement resume
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throw UnimplementedError();
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}
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}
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class ComputedValueListenableExtensionImpl<T> {
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final ValueListenable<T> v;
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ComputedValueListenableExtensionImpl(this.v);
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T get use {
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final caller = GlobalCtx.currentComputation;
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return caller.useDataSource(
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v,
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() => v.use,
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(onData) => ValueListenableDataSourceSubscription<T>(v, onData),
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true,
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v.value);
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}
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}

‎pubspec.yaml

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name: computed_flutter
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description: Computed for Flutter
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publish_to: "none"
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version: 0.0.0+0
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environment:
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sdk: ">=2.17.0 <3.0.0"
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dependencies:
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flutter:
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sdk: flutter
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built_collection: ^5.1.1
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computed:
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path: ../computed
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dev_dependencies:
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flutter_test:
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sdk: flutter
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flutter_lints: ^3.0.0

‎web/favicon.png

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‎web/icons/Icon-192.png

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‎web/icons/Icon-512.png

8.06 KB
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‎web/icons/Icon-maskable-192.png

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‎web/icons/Icon-maskable-512.png

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‎web/index.html

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<!DOCTYPE html>
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<html>
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<head>
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<!--
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If you are serving your web app in a path other than the root, change the
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href value below to reflect the base path you are serving from.
7+
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The path provided below has to start and end with a slash "/" in order for
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it to work correctly.
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For more details:
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* https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base
13+
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This is a placeholder for base href that will be replaced by the value of
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the `--base-href` argument provided to `flutter build`.
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-->
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<base href="$FLUTTER_BASE_HREF">
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<meta charset="UTF-8">
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<meta content="IE=Edge" http-equiv="X-UA-Compatible">
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<meta name="description" content="A new Flutter project.">
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<!-- iOS meta tags & icons -->
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<meta name="apple-mobile-web-app-capable" content="yes">
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<meta name="apple-mobile-web-app-status-bar-style" content="black">
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<meta name="apple-mobile-web-app-title" content="computed_flutter">
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<link rel="apple-touch-icon" href="icons/Icon-192.png">
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<!-- Favicon -->
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<link rel="icon" type="image/png" href="favicon.png"/>
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<title>computed_flutter</title>
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<link rel="manifest" href="manifest.json">
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<script>
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// The value below is injected by flutter build, do not touch.
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const serviceWorkerVersion = null;
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</script>
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<!-- This script adds the flutter initialization JS code -->
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<script src="flutter.js" defer></script>
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</head>
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<body>
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<script>
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window.addEventListener('load', function(ev) {
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// Download main.dart.js
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_flutter.loader.loadEntrypoint({
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serviceWorker: {
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serviceWorkerVersion: serviceWorkerVersion,
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},
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onEntrypointLoaded: function(engineInitializer) {
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engineInitializer.initializeEngine().then(function(appRunner) {
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appRunner.runApp();
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});
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}
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});
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});
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</script>
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</body>
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</html>

‎web/manifest.json

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{
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"name": "computed_flutter",
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"short_name": "computed_flutter",
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"start_url": ".",
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"display": "standalone",
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"background_color": "#0175C2",
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"theme_color": "#0175C2",
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"description": "A new Flutter project.",
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"orientation": "portrait-primary",
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"prefer_related_applications": false,
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"icons": [
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{
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"src": "icons/Icon-192.png",
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"sizes": "192x192",
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"type": "image/png"
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},
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{
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"src": "icons/Icon-512.png",
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"sizes": "512x512",
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"type": "image/png"
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},
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{
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"src": "icons/Icon-maskable-192.png",
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"sizes": "192x192",
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"type": "image/png",
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"purpose": "maskable"
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},
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{
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"src": "icons/Icon-maskable-512.png",
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"sizes": "512x512",
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"type": "image/png",
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"purpose": "maskable"
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}
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]
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}

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