[V2 Appbar] Added Tooltips to AppBar

[Dhruv-Mishra]

Problem

V2 AppBar Title gets truncated when text size is large, leading to accessibility problems

Fix

Added tooltip when long holding V2 AppBar Title, Subtitle and Navigation Icon

Screenshots

Before	After

Pull request checklist

This PR has considered:

• Light and Dark appearances
• Automated Tests
• Documentation and demo app examples
• VoiceOver and Keyboard Accessibility
• Internationalization and RTL layouts
• Size classes and window sizes (notched devices, multitasking, different window sizes, etc)

[Copilot]

Pull Request Overview

This PR adds tooltip support to the V2 AppBar by showing full title, subtitle, or navigation icon content on long press.

• Introduced a clickableWithTooltip modifier and Tooltip composable for displaying tooltips.
• Updated AppBar implementation to wrap title, subtitle, and navigation icon with tooltip support.
• Extended AppBarTokens with tooltip-related token APIs and updated the demo activity and string resources.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
fluentui_topappbars/src/main/java/com/microsoft/fluentui/tokenized/AppBar.kt	Adds clickableWithTooltip, Tooltip, and integrates tooltips into AppBar.
fluentui_core/src/main/java/com/microsoft/fluentui/theme/token/controlTokens/AppBarTokens.kt	Adds TooltipControls class and tooltip token methods.
FluentUI.Demo/src/main/res/values/strings.xml	Adds enable_tooltips string resource.
FluentUI.Demo/src/main/java/com/microsoft/fluentuidemo/demos/V2AppBarActivity.kt	Adds toggle for enabling tooltips in the demo and overrides token behavior.

Comments suppressed due to low confidence (5)

FluentUI.Demo/src/main/res/values/strings.xml:58

• [nitpick] For consistency with other AppBar resource keys, consider renaming this to app_bar_enable_tooltips.

    <string name="enable_tooltips">Enable Tooltips</string>

fluentui_topappbars/src/main/java/com/microsoft/fluentui/tokenized/AppBar.kt:55

• [nitpick] Consider adding unit or UI tests for clickableWithTooltip to verify tooltip display and dismissal behavior.

private fun Modifier.clickableWithTooltip(

fluentui_topappbars/src/main/java/com/microsoft/fluentui/tokenized/AppBar.kt:79

• The call to rememberRipple will not compile without the proper import. Please add import androidx.compose.material.ripple.rememberRipple.

        indication = rememberRipple(color = clickRippleColor)

fluentui_core/src/main/java/com/microsoft/fluentui/theme/token/controlTokens/AppBarTokens.kt:8

• The Offset import is unused in this file and can be removed to clean up unused imports.

import androidx.compose.ui.geometry.Offset

FluentUI.Demo/src/main/java/com/microsoft/fluentuidemo/demos/V2AppBarActivity.kt:18

• The rememberUpdatedState import is not used in this file and should be removed to reduce clutter.

import androidx.compose.runtime.rememberUpdatedState

[joyeeta26]

is there a way possible to selectively import components from a module?
such that we can just import tootlip and its dependencies from the specific module. then we won't have to add implementation again here.

[Dhruv-Mishra]

is there a way possible to selectively import components from a module? such that we can just import tootlip and its dependencies from the specific module. then we won't have to add implementation again here.

Just checked. It seems like there is no way to selectively have dependencies from components within the module without importing the entire module. The best we can do is move the shared code within the core module so that all the components can leverage it.