Initial work on the new JavaScript port by shai-almog · Pull Request #4677 · codenameone/CodenameOne

shai-almog · 2026-03-31T03:38:33Z

No description provided.

github-actions · 2026-03-31T03:47:52Z

✅ Continuous Quality Report

Test & Coverage

✅ Tests: 2364 total, 0 failed, 0 skipped
📊 Line coverage: 53.36% [HTML preview] [Download]
- Lowest covered classes
  - com.codename1.ui.Display$EdtException – 0.00%
  - com.codename1.ui.plaf.CSSBorder$LinearGradient – 0.00%
  - com.codename1.util.EasyThread$InQueueRunnable – 0.00%
  - com.codename1.components.FloatingActionButton$ReleaseActionListener – 0.00%
  - com.codename1.io.Oauth2$ShowAuthenticationActionListener – 0.00%
  - com.codename1.io.Oauth2$RefreshTokenActionListener – 0.00%
  - com.codename1.util.EasyThread$RunAndWaitRunnable – 0.00%
  - com.codename1.components.ToastBar$FlushAnimationCallback – 0.00%
  - com.codename1.ui.plaf.CSSBorder$ColorStop – 0.00%
  - com.codename1.ui.ElevationComparator – 0.00%

Static Analysis

SpotBugs [HTML preview] [Download]
- ❌ ByteCodeTranslator: 114 findings (High: 2, Normal: 85, Low: 27)
  - Top findings
    - High: com/codename1/tools/translator/BytecodeMethod.java:561 – Method com.codename1.tools.translator.BytecodeMethod.findWritableFields(Set) seems to be useless (rule: UC_USELESS_VOID_METHOD)
    - High: com/codename1/tools/translator/bytecodes/TryCatch.java:91 – Write to static field com.codename1.tools.translator.bytecodes.TryCatch.hasTryCatch from instance method com.codename1.tools.translator.bytecodes.TryCatch.appendInstruction(StringBuilder, List) (rule: ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD)
    - Normal: com/codename1/tools/translator/ByteCodeClass.java:169 – Write to static field com.codename1.tools.translator.ByteCodeClass.mainClass from instance method com.codename1.tools.translator.ByteCodeClass.addMethod(BytecodeMethod) (rule: ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD)
    - …and 111 more
- ❌ android: 414 findings (High: 24, Normal: 196, Low: 194)
  - Top findings
    - High: CodenameOne/src/com/codename1/impl/CodenameOneThread.java:48 – com.codename1.impl.CodenameOneThread.STACK_FRAME_SIZE isn't final but should be (rule: MS_SHOULD_BE_FINAL)
    - High: com/codename1/impl/android/AndroidImplementation.java:1085 – Write to static field com.codename1.impl.android.AndroidImplementation.context from instance method com.codename1.impl.android.AndroidImplementation.setContext(Context) (rule: ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD)
    - High: com/codename1/impl/android/AndroidImplementation.java:1286 – com.codename1.impl.android.AndroidImplementation.isDarkMode() has Boolean return type and returns explicit null (rule: NP_BOOLEAN_RETURN_NULL)
    - …and 411 more
- ❌ codenameone-maven-plugin: 488 findings (High: 1, Normal: 315, Low: 172)
  - Top findings
    - High: com/codename1/maven/AbstractCN1Mojo.java:807 – com.codename1.maven.AbstractCN1Mojo.OS isn't final but should be (rule: MS_SHOULD_BE_FINAL)
    - Normal: com/codename1/builders/AndroidGradleBuilder.java:1018 – Dead store to googleServicesJson in com.codename1.builders.AndroidGradleBuilder.build(File, BuildRequest) (rule: DLS_DEAD_LOCAL_STORE)
    - Normal: com/codename1/builders/AndroidGradleBuilder.java:1043 – Possible null pointer dereference in com.codename1.builders.AndroidGradleBuilder.build(File, BuildRequest) due to return value of called method (rule: NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE)
    - …and 485 more
- ❌ core-unittests: 1 findings (Normal: 1)
  - Top findings
    - Normal: CodenameOne/src/com/codename1/ui/util/MutableResource.java:239 – com.codename1.ui.util.MutableResource.saveL10N(DataOutputStream, Hashtable) makes inefficient use of keySet iterator instead of entrySet iterator (rule: WMI_WRONG_MAP_ITERATOR)
- ❌ ios: 125 findings (High: 4, Normal: 75, Low: 46)
  - Top findings
    - High: com/codename1/impl/ios/IOSImplementation.java:1228 – com.codename1.impl.ios.IOSImplementation.isDarkMode() has Boolean return type and returns explicit null (rule: NP_BOOLEAN_RETURN_NULL)
    - High: com/codename1/impl/ios/IOSImplementation.java:128 – com.codename1.impl.ios.IOSImplementation.nativeInstance isn't final but should be (rule: MS_SHOULD_BE_FINAL)
    - High: com/codename1/impl/ios/IOSImplementation.java:214 – Write to static field com.codename1.impl.ios.IOSImplementation.instance from instance method com.codename1.impl.ios.IOSImplementation.init(Object) (rule: ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD)
    - …and 122 more
✅ PMD: 0 findings (no issues) [Report archive]
✅ Checkstyle: 0 findings (no issues) [Report archive]

Generated automatically by the PR CI workflow.

shai-almog · 2026-03-31T03:52:10Z

Android screenshot updates

Compared 35 screenshots: 34 matched, 1 updated.

ValidatorLightweightPicker — updated screenshot. Screenshot differs (320x640 px, bit depth 8).

Preview info: JPEG preview quality 70; JPEG preview quality 70.
Full-resolution PNG saved as ValidatorLightweightPicker.png in workflow artifacts.

Native Android coverage

📊 Line coverage: 7.93% (4062/51234 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 6.24% (20076/321686), branch 2.97% (928/31207), complexity 3.72% (1110/29865), method 6.52% (908/13930), class 10.61% (196/1848)
- Lowest covered classes
  - kotlin.collections.kotlin.collections.ArraysKt___ArraysKt – 0.00% (0/6327 lines covered)
  - kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2384 lines covered)
  - org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.ClassReader – 0.00% (0/1519 lines covered)
  - kotlin.collections.kotlin.collections.CollectionsKt___CollectionsKt – 0.00% (0/1148 lines covered)
  - org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.MethodWriter – 0.00% (0/923 lines covered)
  - kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/712 lines covered)
  - kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/623 lines covered)
  - org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.Frame – 0.00% (0/564 lines covered)
  - kotlin.collections.kotlin.collections.ArraysKt___ArraysJvmKt – 0.00% (0/495 lines covered)
  - kotlinx.coroutines.kotlinx.coroutines.JobSupport – 0.00% (0/423 lines covered)

Benchmark Results

Detailed Performance Metrics

Metric	Duration
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 native encode	1241.000 ms
Base64 CN1 encode	205.000 ms
Base64 encode ratio (CN1/native)	0.165x (83.5% faster)
Base64 native decode	1286.000 ms
Base64 CN1 decode	140.000 ms
Base64 decode ratio (CN1/native)	0.109x (89.1% faster)

shai-almog · 2026-03-31T04:32:05Z

iOS screenshot updates

Compared 35 screenshots: 34 matched, 1 updated.

landscape — updated screenshot. Screenshot differs (2556x1179 px, bit depth 8).

Preview info: Preview provided by instrumentation.
Full-resolution PNG saved as landscape.png in workflow artifacts.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 124 seconds

Detailed Performance Metrics

Metric	Duration
Simulator Boot	3000 ms
Simulator Boot (Run)	1000 ms
App Install	4000 ms
App Launch	7000 ms
Test Execution	179000 ms
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 native encode	1496.000 ms
Base64 CN1 encode	3063.000 ms
Base64 encode ratio (CN1/native)	2.047x (104.7% slower)
Base64 native decode	2222.000 ms
Base64 CN1 decode	2555.000 ms
Base64 decode ratio (CN1/native)	1.150x (15.0% slower)

github-actions · 2026-03-31T14:51:43Z

✅ ByteCodeTranslator Quality Report

Test & Coverage

✅ Tests: 437 total, 0 failed, 2 skipped

Benchmark Results

Execution Time: 11573 ms
Hotspots (Top 20 sampled methods):
- 21.34% java.lang.String.indexOf (404 samples)
- 21.18% com.codename1.tools.translator.Parser.isMethodUsed (401 samples)
- 14.37% java.util.ArrayList.indexOf (272 samples)
- 5.92% java.lang.Object.hashCode (112 samples)
- 3.96% com.codename1.tools.translator.Parser.addToConstantPool (75 samples)
- 3.43% com.codename1.tools.translator.BytecodeMethod.optimize (65 samples)
- 3.06% java.lang.System.identityHashCode (58 samples)
- 2.59% com.codename1.tools.translator.BytecodeMethod.addToConstantPool (49 samples)
- 1.58% com.codename1.tools.translator.ByteCodeClass.markDependent (30 samples)
- 1.32% com.codename1.tools.translator.Parser.generateClassAndMethodIndexHeader (25 samples)
- 1.27% com.codename1.tools.translator.Parser.cullMethods (24 samples)
- 1.16% com.codename1.tools.translator.ByteCodeClass.calcUsedByNative (22 samples)
- 1.16% com.codename1.tools.translator.BytecodeMethod.equals (22 samples)
- 1.16% com.codename1.tools.translator.BytecodeMethod.appendMethodC (22 samples)
- 1.06% java.lang.StringCoding.encode (20 samples)
- 1.00% com.codename1.tools.translator.BytecodeMethod.appendCMethodPrefix (19 samples)
- 0.79% java.lang.StringBuilder.append (15 samples)
- 0.69% sun.nio.ch.FileDispatcherImpl.write0 (13 samples)
- 0.69% com.codename1.tools.translator.BytecodeMethod.isMethodUsedByNative (13 samples)
- 0.48% com.codename1.tools.translator.bytecodes.Invoke.containsSignature (9 samples)
⚠️ Coverage report not generated.

Static Analysis

✅ SpotBugs: no findings (report was not generated by the build).
⚠️ PMD report not generated.
⚠️ Checkstyle report not generated.

Generated automatically by the PR CI workflow.

github-actions · 2026-04-02T07:24:41Z

Cloudflare Preview

URL: https://pr-4677-website-preview.codenameone.pages.dev
Branch: pr-4677-website-preview

… alerts

…ge operations, and the minimal network connection

And several other bugs

shai-almog · 2026-04-05T18:45:35Z

JavaScript port screenshot updates

Compared 5 screenshots: 0 matched, 5 missing references.

MainActivity — missing reference. Reference screenshot missing at /home/runner/work/CodenameOne/CodenameOne/scripts/javascript/screenshots/MainActivity.png.

Preview info: JPEG preview quality 70; JPEG preview quality 70.
Full-resolution PNG saved as MainActivity.png in workflow artifacts.
graphics-draw-line — missing reference. Reference screenshot missing at /home/runner/work/CodenameOne/CodenameOne/scripts/javascript/screenshots/graphics-draw-line.png.

Preview info: JPEG preview quality 70; JPEG preview quality 70.
Full-resolution PNG saved as graphics-draw-line.png in workflow artifacts.
graphics-draw-rect — missing reference. Reference screenshot missing at /home/runner/work/CodenameOne/CodenameOne/scripts/javascript/screenshots/graphics-draw-rect.png.

Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 896x630.
Full-resolution PNG saved as graphics-draw-rect.png in workflow artifacts.
graphics-fill-rect — missing reference. Reference screenshot missing at /home/runner/work/CodenameOne/CodenameOne/scripts/javascript/screenshots/graphics-fill-rect.png.

Preview info: JPEG preview quality 70; JPEG preview quality 70.
Full-resolution PNG saved as graphics-fill-rect.png in workflow artifacts.
kotlin — missing reference. Reference screenshot missing at /home/runner/work/CodenameOne/CodenameOne/scripts/javascript/screenshots/kotlin.png.

Preview info: JPEG preview quality 70; JPEG preview quality 70.
Full-resolution PNG saved as kotlin.png in workflow artifacts.

…tructure

…remove bogus file (#4719) - Add port.js shim for CodenameOneImplementation.initImpl to handle getClass().getName() failures in ParparVM JS translation - Simplify ParparVMBootstrap.bootstrap() to match JavaScriptPortBootstrap (remove intermediate hasNativeTheme/installNativeTheme calls) - Remove bogus root-level ParparVMBootstrap.java with incorrect imports - Update STATUS.md with fix descriptions Agent-Logs-Url: https://github.com/codenameone/CodenameOne/sessions/450e96a0-a954-4d81-b2c3-4743d2b2bbe3 Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: shai-almog <67850168+shai-almog@users.noreply.github.com>

shai-almog force-pushed the javascript-port-initial-work branch from bfdfa3c to 771920d Compare March 31, 2026 04:08

shai-almog force-pushed the javascript-port-initial-work branch from 771920d to 7b7456c Compare March 31, 2026 14:20

shai-almog force-pushed the javascript-port-initial-work branch 12 times, most recently from 00a257b to 3701252 Compare April 3, 2026 12:17

shai-almog added 11 commits April 3, 2026 19:52

Initial work on the new JavaScript port

5f3d922

Added improved JavaScript port coverage to CI and fixed port security…

0e523b8

… alerts

Adding initial placeholder facade for the full port

042e3bc

HTML5Implementation now delegates bootstrap main-class binding, stora…

8844c0f

…ge operations, and the minimal network connection

Added some event handling and delegation

10077e1

Refactored events into a more generic session state

9c4da78

Improved keyboard event handling

5564e63

Initial work on rendering layer

1464e68

Additional HTML Graphics support

38b13a4

Incorporated clipping and drawing logic

0a47a02

Additional fixes for the rendering code and updated status file

a8aaf54

shai-almog added 10 commits April 3, 2026 19:52

Fixed CI failure

5110f0d

Fixed CI and got the intial bootstrap running

5f0f918

Fixed CSS build issue

7425f92

Removing TeaVM from build

360da81

Added bootstrap code

db6111b

Fixed initialization loop and some thread issues

3b224a0

Fixed additional CI pipeline failures

b847afa

Fixed merge of String.format() change

27255f7

Added TeaVM stubs to get CI working with the new port

658c9bb

Removed TeaVM dependency and replaced it with similar code

8f402dc

shai-almog force-pushed the javascript-port-initial-work branch from 3701252 to 8f402dc Compare April 3, 2026 16:52

Cleaned up port and defined boundry with VM

cbf34ba

shai-almog force-pushed the javascript-port-initial-work branch from d869903 to 7296f83 Compare April 4, 2026 07:37

Added an initial JSBody implementation

392975a

shai-almog force-pushed the javascript-port-initial-work branch from 7296f83 to 392975a Compare April 4, 2026 08:21

shai-almog added 5 commits April 4, 2026 14:44

Trying to native function calls

445ede9

Fixed the Cn1ssDeviceRunner lambda bridge recursion

a71c3eb

And several other bugs

Fixed JS tests so they run (albeit all fail)

418da37

Fixed several blockers

9126c3c

Screenshot test should now produce screenshots

4a97abd

shai-almog force-pushed the javascript-port-initial-work branch from 03ee3fc to 4a97abd Compare April 5, 2026 16:33

Fixed another CI failure with array clone

5d03146

shai-almog and others added 7 commits April 6, 2026 07:31

Fixed invokespecial

e5c20fa

Trying to fix the broader CI regressions and JS Port

16ce63e

Improved debug logging

060916a

Added some fixes for form issue

5cda061

Fix bugs in ParparVMBootstrap.java: Remove duplicate call and align s…

05566bf

…tructure

Merge branch 'master' into javascript-port-initial-work

1df3c77

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Initial work on the new JavaScript port#4677

Initial work on the new JavaScript port#4677
shai-almog wants to merge 37 commits intomasterfrom
javascript-port-initial-work

shai-almog commented Mar 31, 2026

Uh oh!

github-actions bot commented Mar 31, 2026 •

edited

Loading

Uh oh!

shai-almog commented Mar 31, 2026 •

edited

Loading

Uh oh!

shai-almog commented Mar 31, 2026 •

edited

Loading

Uh oh!

github-actions bot commented Mar 31, 2026 •

edited

Loading

Uh oh!

github-actions bot commented Apr 2, 2026

Uh oh!

shai-almog commented Apr 5, 2026 •

edited

Loading

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

2 participants

Conversation

shai-almog commented Mar 31, 2026

Uh oh!

github-actions bot commented Mar 31, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

✅ Continuous Quality Report

Test & Coverage

Static Analysis

Uh oh!

shai-almog commented Mar 31, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Android screenshot updates

Native Android coverage

Benchmark Results

Detailed Performance Metrics

Uh oh!

shai-almog commented Mar 31, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

iOS screenshot updates

Benchmark Results

Detailed Performance Metrics

Uh oh!

github-actions bot commented Mar 31, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

✅ ByteCodeTranslator Quality Report

Test & Coverage

Benchmark Results

Static Analysis

Uh oh!

github-actions bot commented Apr 2, 2026

Cloudflare Preview

Uh oh!

shai-almog commented Apr 5, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

JavaScript port screenshot updates

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

2 participants

github-actions bot commented Mar 31, 2026 •

edited

Loading

shai-almog commented Mar 31, 2026 •

edited

Loading

shai-almog commented Mar 31, 2026 •

edited

Loading

github-actions bot commented Mar 31, 2026 •

edited

Loading

shai-almog commented Apr 5, 2026 •

edited

Loading