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v4: Flex media redux #21405

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Dec 23, 2016
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v4: Flex media redux #21405

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5afc12c
reduce .media styles to their bare minimum
mdo Dec 23, 2016
e954dd6
small unrelated addition—adds .d-flex-inline util
mdo Dec 23, 2016
2adfe4b
overhauls media object docs
mdo Dec 23, 2016
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156 changes: 63 additions & 93 deletions docs/layout/media-object.md
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Expand Up @@ -5,50 +5,53 @@ description: Documentation and examples for Bootstrap's media object to construc
group: layout
---

The [media object](http://www.stubbornella.org/content/2010/06/25/the-media-object-saves-hundreds-of-lines-of-code/) is an abstract element used as the basis for building more complex and repetitive components (like blog comments, Tweets, etc). Included is support for left and right aligned content, content alignment options, nesting, and more.
The [media object](http://www.stubbornella.org/content/2010/06/25/the-media-object-saves-hundreds-of-lines-of-code/) helps build complex and repetitive components where some media is positioned alongside content that doesn't wrap around said media. Plus, it does this with only two required classes thanks to flexbox.

## Contents

* Will be replaced with the ToC, excluding the "Contents" header
{:toc}

## Default media
## Example

The default media allow to float a media object (images, video, audio) to the left or right of a content block.
Below is an example of a single media object. Only two classes are required—the wrapping `.media` and the `.media-body` around your content. Optional padding and margin can be controlled through [spacing utilities]({{ site.baseurl }}/utilities/spacing/).

{% example html %}
<div class="media">
<a class="media-left" href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
<img class="d-flex mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
<div class="media-body">
<h4 class="media-heading">Media heading</h4>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
<h5 class="mt-0">Media heading</h5>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
</div>
</div>
{% endexample %}

{% callout warning %}
##### Flexbug #12: Inline elements aren't treated as flex items

Internet Explorer 10-11 do not render inline elements like links or images (or `::before` and `::after` pseudo-elements) as flex items. The only workaround is to set a non-inline `display` value (e.g., `block`, `inline-block`, or `flex`). We suggest using `.d-flex`, one of our [display utilities]({{ site.baseurl }}/utilities/display-property/), as an easy fix.

**Source:** [Flexbugs on GitHub](https://github.com/philipwalton/flexbugs#12-inline-elements-are-not-treated-as-flex-items)
{% endcallout %}

## Nesting

Media components can also be nested.
Media objects can be infinitely nested, though we suggest you stop at some point. Place nested `.media` within the `.media-body` of a parent media object.

{% example html %}
<div class="media">
<div class="media-left">
<a href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
</div>
<img class="d-flex mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
<div class="media-body">
<h4 class="media-heading">Media heading</h4>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
<h5 class="mt-0">Media heading</h5>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.

<div class="media mt-3">
<a class="media-left" href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
<a class="d-flex pr-3" href="#">
<img data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
<div class="media-body">
<h4 class="media-heading">Nested media heading</h4>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
<h5 class="mt-0">Media heading</h5>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
</div>
</div>
</div>
Expand All @@ -57,113 +60,80 @@ Media components can also be nested.

## Alignment

The images or other media can be aligned top, middle, or bottom. The default is top aligned.
Media in a media object can be aligned with flexbox utilities to the top (default), middle, or end of your `.media-body` content.

{% example html %}
<div class="media">
<div class="media-left">
<a href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
</div>
<img class="d-flex mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
<div class="media-body">
<h4 class="media-heading">Top aligned media</h4>
<p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
<h5 class="mt-0">Top-aligned media</h5>
<p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
<p>Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
</div>
</div>
{% endexample %}

{% example html %}
<div class="media">
<div class="media-left media-middle">
<a href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
</div>
<img class="d-flex mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
<div class="media-body">
<h4 class="media-heading">Middle aligned media</h4>
<p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
<p>Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
<h5 class="mt-0">Center-aligned media</h5>
<p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
<p class="mb-0">Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
</div>
</div>
{% endexample %}

{% example html %}
<div class="media">
<div class="media-left media-bottom">
<a href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
<img class="d-flex mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
<div class="media-body">
<h5 class="mt-0">Bottom-aligned media</h5>
<p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
<p class="mb-0">Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
</div>
</div>
{% endexample %}

## Order

Change the order of content in media objects by modifying the HTML itself, or by adding some custom flexbox CSS to set the `order` property (to an integer of your choosing).

{% example html %}
<div class="media">
<div class="media-body">
<h4 class="media-heading">Bottom aligned media</h4>
<p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
<p>Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
<h5 class="mt-0 mb-1">Media object</h5>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
</div>
<img class="d-flex ml-3" data-src="holder.js/64x64" alt="Generic placeholder image">
</div>
{% endexample %}

## Media list

With a bit of extra markup, you can use media inside list (useful for comment threads or articles lists).
Because the media object has so few structural requirements, you can also use these classes on list HTML elements. On your `<ul>` or `<ol>`, add the `.list-unstyled` to remove any browser default list styles, and then apply `.media` to your `<li>`s. As always, use spacing utilities wherever needed to fine tune.

{% example html %}
<ul class="media-list">
<ul class="list-unstyled">
<li class="media">
<div class="media-left">
<a href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
</div>
<img class="d-flex mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
<div class="media-body">
<h4 class="media-heading">Media heading</h4>
<p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.</p>
<!-- Nested media object -->
<div class="media mt-3">
<a class="media-left" href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
<div class="media-body">
<h4 class="media-heading">Nested media heading</h4>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.
<!-- Nested media object -->
<div class="media mt-3">
<div class="media-left">
<a href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
</div>
<div class="media-body">
<h4 class="media-heading">Nested media heading</h4>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.
</div>
</div>
</div>
</div>
<!-- Nested media object -->
<div class="media mt-3">
<div class="media-left">
<a href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
</div>
<div class="media-body">
<h4 class="media-heading">Nested media heading</h4>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.
</div>
</div>
<h5 class="mt-0 mb-1">List-based media object</h5>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
</div>
</li>
<li class="media mt-3">
<li class="media my-4">
<img class="d-flex mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
<div class="media-body">
<h4 class="media-heading">Media heading</h4>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.
<h5 class="mt-0 mb-1">List-based media object</h5>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
</div>
<div class="media-right">
<a href="#">
<img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
</a>
</li>
<li class="media">
<img class="d-flex mr-3" data-src="holder.js/64x64" alt="Generic placeholder image">
<div class="media-body">
<h5 class="mt-0 mb-1">List-based media object</h5>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
</div>
</li>
</ul>
Expand Down
55 changes: 2 additions & 53 deletions scss/_media.scss
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Original file line number Diff line number Diff line change
@@ -1,59 +1,8 @@
.media {
display: flex;
align-items: flex-start;
}

.media-body {
flex: 1;
}
.media-middle {
align-self: center;
}
.media-bottom {
align-self: flex-end;
}


//
// Images/elements as the media anchor
//

.media-object {
display: block;

// Fix collapse in webkit from max-width: 100% and display: table-cell.
&.img-thumbnail {
max-width: none;
}
}


//
// Alignment
//

.media-right {
padding-left: $media-alignment-padding-x;
}

.media-left {
padding-right: $media-alignment-padding-x;
}


//
// Headings
//

.media-heading {
margin-top: 0;
margin-bottom: $media-heading-margin-bottom;
}


//
// Media list variation
//

.media-list {
padding-left: 0;
list-style: none;
}
1 change: 1 addition & 0 deletions scss/utilities/_display.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -14,5 +14,6 @@
.d#{$infix}-table { display: table !important; }
.d#{$infix}-table-cell { display: table-cell !important; }
.d#{$infix}-flex { display: flex !important; }
.d#{$infix}-flex-inline { display: inline-flex !important; }
}
}