[Android, iOS] Dynamically setting SearchHandler Query property does not update text in the search box

[HarishwaranVijayakumar]

Reverting this PR

#30222

Root Cause of the issue

• On Android and iOS, the change to the Query property was not implemented in the SearchHandlerPropertyChanged method, which results in the SearchHandler's Query property not being updated during runtime.

Description of Change

• To resolve this, I have implemented the query property change in SearchHandlerPropertyChanged method on both Android and iOS platforms.

Issues Fixed

Fixes #14497

Tested the behaviour in the following platforms

• Windows
• Android
• iOS
• Mac

Output

Before Fix	After Fix
SearchHandlerBeforeFixAndroid.mov	SearchHandlerAfterFixAndroid.mov
SearchHandlerBeforeFixiOS.mov	SearchHandlerAfterFixiOS.mov

[dotnet-policy-service]

Hey there @HarishwaranVijayakumar! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[HarishwaranVijayakumar]

@dotnet-policy-service agree company="Syncfusion, Inc."

[jsuarezruiz]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[jsuarezruiz]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[jsuarezruiz]

Could you commit the pending test snapshot for macOS?

[rmarinho]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[jsuarezruiz]

Maybe have sense to have an extension method to access the Shell SearchBar.

[HarishwaranVijayakumar]

@jsuarezruiz, as suggested added a method in the helper extension class to access Shell SearchBar

[jsuarezruiz]

This will always places the cursor at the end of the text. I think could manage the cursor position in this way:

• Storing the cursor position before changing the text
• Only placing the cursor at the end if there was a selection or if necessary

[jsuarezruiz]

Something like:

 void UpdateText()
{
    int cursorPosition = editText.SelectionStart;
    bool selectionExists = editText.HasSelection;

    editText.Text = searchHandler.Query ?? string.Empty;
    
    UpdateTextTransform();
    
    // If we had a selection, place the cursor at the end of text
    // Otherwise try to maintain the cursor at its previous position
    int textLength = editText.Text?.Length ?? 0;
    int newPosition = selectionExists ? textLength : Math.Min(cursorPosition, textLength);
    
    // Prevents the cursor from resetting to position zero when text is set programmatically
    editText.SetSelection(newPosition);
}

[HarishwaranVijayakumar]

@jsuarezruiz, as suggested modified the method UpdateText for android platform

[jsuarezruiz]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[jsuarezruiz]

Could be:

 IUIElement? element = app switch
    {
        AppiumAndroidApp => app.WaitForElement(AppiumQuery.ByXPath("//android.widget.EditText")),
        AppiumIOSApp or AppiumCatalystApp => app.WaitForElement(AppiumQuery.ByXPath("//XCUIElementTypeSearchField")),
        AppiumWindowsApp => app.WaitForElement("TextBox"),
        _ => null // Fallback for unsupported platforms
    };