[input like]: align implementation of all input like components

[nnaydenow]

Bug Description

Components that Look Like ui5-input

We have these components that look the same or similar to ui5-input:

• ui5-combobox
• ui5-date-picker
• ui5-daterange-picker
• ui5-datetime-picker
• ui5-file-uploader
• ui5-input
• ui5-multi-combobox
• ui5-multi-input
• ui5-select
• ui5-textarea
• ui5-time-picker
• ui5-step-input

These components look the same because:

• They extend ui5-input.
• They follow the ui5-input DOM structure and use its styles.
• They use ui5-input in the component shadow DOM.

We should make all input-like components look like the input field.

Note: Since each input like component is implemented in its own way they don't support customization in the same way.

Proposed Solution

Provide an HTML DOM structure that can be reused in every input-like component. (probably the input styles and their complexity will be reduced too)

Expected solution

Provide and document HTML DOM structure that can be reused by different input like components to reduce the maintainability of input like component styles and to prevent deviations between different components.

Affected Component

All input like components

[nnaydenow]

Hi @SAP/ui5-webcomponents-topic-rl,

Could you please check this enhancement?