+++ /dev/null
----
-layout: page
-title: Custom forms
----
-
-In the interest of customization and cross browser consistency, Bootstrap include a handful of customized form elements. They're built on top of semantic and accessible markup, so they're solid replacements for default form controls.
-
-## Checkboxes and radios
-
-Each checkbox and radio is wrapped in a `<label>` for three reasons:
-
-- It provides a larger hit areas for checking the control.
-- It provides a helpful and semantic wrapper to help us replace the default `<input>`s.
-- It triggers the state of the `<input>` automatically, meaning no JavaScript is required.
-
-We hide the default `<input>` with `opacity` and use the `.c-indicator` to build a new custom form control. We can't build a custom one from just the `<input>` because CSS's `content` doesn't work on that element.
-
-With the sibling selector (`~`), we use the `:checked` state to trigger a makeshift checked state on the custom control.
-
-In the checked states, we use **base64 embedded SVG icons** from [Open Iconic](http://useiconic.com/open). This provides us the best control for styling and positioning across browsers and devices.
-
-### Checkboxes
-
-{% example html %}
-<label class="c-input c-checkbox">
- <input type="checkbox">
- <span class="c-indicator"></span>
- Check this custom checkbox
-</label>
-{% endexample %}
-
-Custom checkboxes can also utilize the `:indeterminate` pseudo class.
-
-<div class="bd-example bd-example-indeterminate">
- <label class="c-input c-checkbox">
- <input type="checkbox">
- <span class="c-indicator"></span>
- Check this custom checkbox
- </label>
-</div>
-
-**Heads up!** You'll need to set this state manually via JavaScript as there is no available HTML attribute for specifying it. If you're using jQuery, something like this should suffice:
-
-{% highlight js %}
-$('.your-checkbox').prop('indeterminate', true)
-{% endhighlight %}
-
-### Radios
-
-{% example html %}
-<label class="c-input c-radio">
- <input id="radio1" name="radio" type="radio">
- <span class="c-indicator"></span>
- Toggle this custom radio
-</label>
-<label class="c-input c-radio">
- <input id="radio2" name="radio" type="radio">
- <span class="c-indicator"></span>
- Or toggle this other custom radio
-</label>
-{% endexample %}
-
-### Stacked
-
-Custom checkboxes and radios are inline to start. Add a parent with class `.c-inputs-stacked` to ensure each form control is on separate lines.
-
-{% example html %}
-<div class="c-inputs-stacked">
- <label class="c-input c-radio">
- <input id="radioStacked1" name="radio-stacked" type="radio">
- <span class="c-indicator"></span>
- Toggle this custom radio
- </label>
- <label class="c-input c-radio">
- <input id="radioStacked2" name="radio-stacked" type="radio">
- <span class="c-indicator"></span>
- Or toggle this other custom radio
- </label>
-</div>
-{% endexample %}
-
-## Select menu
-
-Similar to the checkboxes and radios, we wrap the `<select>` in a `<label>` as a semantic wrapper that we can generate custom styles on with CSS's generated content.
-
-{% example html %}
-<label class="select">
- <select>
- <option selected>Open this select menu</option>
- <option value="1">One</option>
- <option value="2">Two</option>
- <option value="3">Three</option>
- </select>
-</label>
-{% endexample %}
-
-The `<select>` has quite a few styles to override and includes a few hacks to get things done. Here's what's happening:
-
-- The `appearance` is reset to `none` for nearly all styles to correctly apply across modern browsers (meaning not IE9).
-- The `:-moz-focusring` is overridden so that on focus there's no inner border in Firefox.
-- The arrow is hidden in Firefox with a media query hack. (There's a [longstanding open bug](https://bugzilla.mozilla.org/show_bug.cgi?id=649849) for a native method of addressing this.)
-- The arrow is hidden in IE10+ with a simple selector.
-- The arrow is hidden in IE9 with a separate media query hack which generates another pseudo-element to literally mask it. Not ideal, but doable.
-
-**Heads up!** This one comes with some quirks right now:
-
-- `select[multiple]` is currently currently **not supported**.
-- Clickability is limited in IE9.
-- Firefox's dropdown of `option`s looks rather ugly.
-- The custom caret is unable to receive the selected state's `color`.
-
-Any ideas on improving these are most welcome.
-
-## File browser
-
-{% example html %}
-<label class="file">
- <input type="file" id="file">
- <span class="file-custom"></span>
-</label>
-{% endexample %}
-
-The file input is the most gnarly of the bunch. Here's how it works:
-
-- We wrap the `<input>` in a `<label>` so the custom control properly triggers the file browser.
-- We hide the default file `<input>` via `opacity`.
-- We use `:after` to generate a custom background and directive (*Choose file...*).
-- We use `:before` to generate and position the *Browse* button.
-- We declare a `height` on the `<input>` for proper spacing for surrounding content.
-
-In other words, it's an entirely custom element, all generated via CSS.
-
-**Heads up!** The custom file input is currently unable to update the *Choose file...* text with the filename. Without JavaScript, this might not be possible to change, but I'm open to ideas.
projects / thirdparty / bootstrap.git / commitdiff
