How can I move the cursor to the beginning of a long string in Mat-autocomplete when it appears at the end?

I'm struggling to figure out how to execute a code snippet for my Angular app on Stack Overflow.

Specifically, I am using mat-autocomplete. When I select a name that is 128 characters long, the cursor appears at the end of the selected string instead of at the beginning. Has anyone else experienced this issue with mat-autocomplete?

https://i.sstatic.net/FtaYD.png

For example, in this StackBlitz demo, I added the letter 'v' to the name 'California'. When I select 'California', the cursor is placed at the end of the string rather than where I would like it to be - at the beginning.

In the source code (located at app > app.component.ts in the provided link), look at the state variable and change the name property to a 128 character long string. Then, when you select an option from the drop-down menu, observe the cursor appearing at the end of the string.

angulartypescriptmat-autocomplete

Answer №1

Utilizing the built-in APIs of input and textarea eliminates the need for a custom Range implementation. In our scenario, calling setSelectionRange() is sufficient. However, even after this operation, the content within the input field remains hidden. It appears that invoking both blur() and focus() resolves this issue.

optionSelected(input: HTMLInputElement) {
  input.blur();
  input.setSelectionRange(0, 0);
  input.focus();
}

<input ... #input>
<mat-autocomplete ... (optionSelected)="optionSelected(input)">

DEMO

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