bug: Active segment button not highlighted when nested into async container #28816
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liamdebeasi
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package: core
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Thanks, I can reproduce this. Here is a dev build if you are interested in testing a proposed fix: |
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Jan 17, 2024
Issue number: resolves #28816 --------- <!-- Please do not submit updates to dependencies unless it fixes an issue. --> <!-- Please try to limit your pull request to one type (bugfix, feature, etc). Submit multiple pull requests if needed. --> ## What is the current behavior? <!-- Please describe the current behavior that you are modifying. --> The value is set on Segment asynchronously when binding it in Angular. However, the timing works out such that the value changes after `connectedCallback` is fired but before any Stencil Watchers are configured. As a result, our `value` property watcher does not fire which causes `ionSelect` to not be emitted. Segment Buttons rely on this event to know when to update their state (if the value changes such that a segment button is now selected). This results in a checked segment button not appearing checked. This is similar to other issues that have been fixed: #28510 #28488 #28526 ## What is the new behavior? <!-- Please describe the behavior or changes that are being added by this PR. --> - Segment now emits `ionSelect` on `componentDidLoad` so that any descendant segment buttons can update correctly. ## Does this introduce a breaking change? - [ ] Yes - [x] No <!-- If this introduces a breaking change: 1. Describe the impact and migration path for existing applications below. 2. Update the BREAKING.md file with the breaking change. 3. Add "BREAKING CHANGE: [...]" to the commit description when merging. See https://github.com/ionic-team/ionic-framework/blob/main/.github/CONTRIBUTING.md#footer for more information. --> ## Other information <!-- Any other information that is important to this PR such as screenshots of how the component looks before and after the change. --> Dev build: `7.6.5-dev.11705415448.16878103` This is a timing issue with Stencil, so I am unable to write a reliable automated test. Reviewers should test the dev build in the repro provided in the linked issue.
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Thanks for the issue. This has been resolved via #28837, and a fix will be available in an upcoming release of Ionic Framework. Feel free to keep testing the dev build, and let me know if you run into any issues. |
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Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out. |
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Prerequisites
Ionic Framework Version
v7.x
Current Behavior
A segment with dynamic value does not highlight the selected button when nested into an
asynccontainer.Expected Behavior
It should be highlighted just as it is usually the case.
Steps to Reproduce
<ion-segment [value]="customValue">with at least 2<ion-segment-button>s.<div *ngIf="observable$ | async">.Code Reproduction URL
https://github.com/leomazza/ionic-segment-bug
Ionic Info
Ionic:
Ionic CLI : 7.2.0 (/Users/leomazza/.nvm/versions/node/v20.10.0/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/angular 7.6.4
@angular-devkit/build-angular : 17.0.10
@angular-devkit/schematics : 17.0.10
@angular/cli : 17.0.10
@ionic/angular-toolkit : 9.0.0
Capacitor:
Capacitor CLI : 5.6.0
@capacitor/android : not installed
@capacitor/core : 5.6.0
@capacitor/ios : not installed
Utility:
cordova-res : 0.15.4
native-run : 2.0.0
System:
NodeJS : v20.10.0 (/Users/leomazza/.nvm/versions/node/v20.10.0/bin/node)
npm : 10.2.3
OS : macOS Unknown
Additional Information
NOTE: The issue is with the second segment block. The first segment button is the selected one but it is not shown as active/checked.
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