Customize the dropdown width of the typeahead feature in ng-bootstrap

Question

Customize the dropdown width of the typeahead feature in ng-bootstrap

I recently started using the ng-bootstrap Typeahead component and so far, I am quite satisfied with it.

One thing I am trying to figure out is how to make the width of the dropdown items in sync with the input field width. Currently, the default behavior adjusts the width based on the text length, but I want them to match the input field. It seems like a simple CSS tweak...

To demonstrate, I have put together a straightforward Example on Plunker.

If you take a look, you will notice that the specified style is not being applied:

.dropdown-menu { width: 100%;}

However, when I use the browser dev tools and apply the same rule, it works as expected.

Any insights on how to achieve the desired outcome purely through CSS?

css angular bootstrap-4 ng-bootstrap

Answer 1

Answer №1

To ensure there is no encapsulation, add

encapsulation: ViewEncapsulation.None

to the component's code.

import {Component, ViewEncapsulation} from '@angular/core';

@Component({
  selector: 'ngbd-typeahead-template',
  templateUrl: 'src/typeahead-template.html',
  styleUrls: ['src/typeahead-template.css'],
  encapsulation: ViewEncapsulation.None
})

For the updated code, refer to the following plunker

If ViewEncapsulation.None is not used, the styles defined within this component will only apply to this component and will not affect any other components on the page.

For further insights, check out this resource

Answer 2

To ensure there is no encapsulation, add

encapsulation: ViewEncapsulation.None

to the component's code.

import {Component, ViewEncapsulation} from '@angular/core';

@Component({
  selector: 'ngbd-typeahead-template',
  templateUrl: 'src/typeahead-template.html',
  styleUrls: ['src/typeahead-template.css'],
  encapsulation: ViewEncapsulation.None
})

For the updated code, refer to the following plunker

If ViewEncapsulation.None is not used, the styles defined within this component will only apply to this component and will not affect any other components on the page.

For further insights, check out this resource

Answer 3

Answer №2

In my experience, I have found that using ng-deep proves to be effective. It provides a sense of security and ensures a scoped approach:

::ng-deep .dropdown-menu { width: 100%; }

Answer 4

In my experience, I have found that using ng-deep proves to be effective. It provides a sense of security and ensures a scoped approach:

::ng-deep .dropdown-menu { width: 100%; }

Answer 5

Answer №3

Here is how I managed to make it function smoothly in a responsive col setup:

::ng-deep ngb-typeahead-window.dropdown-menu {
    width: calc(100% - 30px);
}

Alternatively, you could use:

::ng-deep .dropdown-menu.show {
    width:calc(100% - 30px);
}

Between the two options, I lean towards the first one as the better choice.

Answer 6

Here is how I managed to make it function smoothly in a responsive col setup:

::ng-deep ngb-typeahead-window.dropdown-menu {
    width: calc(100% - 30px);
}

Alternatively, you could use:

::ng-deep .dropdown-menu.show {
    width:calc(100% - 30px);
}

Between the two options, I lean towards the first one as the better choice.

Answer 7

Answer №4

Indeed, Nandita's solution is on point. Simply setting a width on the dropdown menu directly won't have any effect.

If you want the dropdown menu to match the width of the input, you can follow Nandita's advice and include the following CSS:

.dropdown-menu { width: 300px;}

Feel free to see the outcome for yourself:

Answer 8

Indeed, Nandita's solution is on point. Simply setting a width on the dropdown menu directly won't have any effect.

If you want the dropdown menu to match the width of the input, you can follow Nandita's advice and include the following CSS:

.dropdown-menu { width: 300px;}

Feel free to see the outcome for yourself:

Answer 9

Answer №5

Here is a solution that will work perfectly without affecting other dropdown elements:

::ng-deep .dropdown-menu { width: 100%; }

Instead of using the class .dropdown-menu, you can target elements with ngb-typeahead- as the ID:

::ng-deep [id^="ngb-typeahead-"]{ 
width: 100%!important; 
white-space: nowrap!important;
overflow: hidden!important;
text-overflow: ellipsis!important;}

Answer 10

Here is a solution that will work perfectly without affecting other dropdown elements:

::ng-deep .dropdown-menu { width: 100%; }

Instead of using the class .dropdown-menu, you can target elements with ngb-typeahead- as the ID:

::ng-deep [id^="ngb-typeahead-"]{ 
width: 100%!important; 
white-space: nowrap!important;
overflow: hidden!important;
text-overflow: ellipsis!important;}

Answer 11

Answer №6

Building upon the insights shared by Nandita Sharma, when disabling ViewEncapsulation within Angular, it is recommended to enclose CSS rules within the component's scope to prevent the leakage of generic class names into the global CSS environment.

One straightforward approach is to confine all styles within the component's selector:

// Component name housing the typeahead feature
app-parent-selector {
  // Styles defined here will not spill over to the global CSS environment
  .dropdown-menu {
    width: 400px;
  }
}

Furthermore, it is prudent to steer clear of techniques involving shadow-piercing descendant combinators (::ng-deep, /deep/, or >>>) as major browsers are gradually phasing out support for them, and Angular plans to remove them eventually.

Answer 12

Building upon the insights shared by Nandita Sharma, when disabling ViewEncapsulation within Angular, it is recommended to enclose CSS rules within the component's scope to prevent the leakage of generic class names into the global CSS environment.

One straightforward approach is to confine all styles within the component's selector:

// Component name housing the typeahead feature
app-parent-selector {
  // Styles defined here will not spill over to the global CSS environment
  .dropdown-menu {
    width: 400px;
  }
}

Furthermore, it is prudent to steer clear of techniques involving shadow-piercing descendant combinators (::ng-deep, /deep/, or >>>) as major browsers are gradually phasing out support for them, and Angular plans to remove them eventually.

Answer 13

Answer №7

To ensure consistency across all your pages, consider applying this globally if you intend to use the type-ahead field in the same manner. If you have a styles.scss file where you consolidate all your global styles, include the following code snippet:

ngb-typeahead-window {
    width:calc(100% - 30px);

    .dropdown-item {
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

Answer 14

To ensure consistency across all your pages, consider applying this globally if you intend to use the type-ahead field in the same manner. If you have a styles.scss file where you consolidate all your global styles, include the following code snippet:

ngb-typeahead-window {
    width:calc(100% - 30px);

    .dropdown-item {
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

Answer 15

Answer №8

If you want to achieve this effect, utilizing scss would be the way to go. Locate the containing div element in your document object model (dom) and assign it the class 'dropdown-wrapper'.

.dropdown-wrapper {
  .dropdown-menu {
    width: 90%;
  }
}

Be sure to incorporate this into your overarching scss file. Happy coding!

Answer 16

If you want to achieve this effect, utilizing scss would be the way to go. Locate the containing div element in your document object model (dom) and assign it the class 'dropdown-wrapper'.

.dropdown-wrapper {
  .dropdown-menu {
    width: 90%;
  }
}

Be sure to incorporate this into your overarching scss file. Happy coding!

Customize the dropdown width of the typeahead feature in ng-bootstrap

Answer №1

Answer №2

Answer №3

Answer №4

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Answer №6

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Answer №8

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