Custom progress element

_includes/progress-ie9.html

@@ -0,0 +1,7 @@
+<progress class="progress" value="25" max="100">
+  <div class="progress">
+    <span class="progress-bar" style="width: 25%;">
+      25%
+    </span>
+  </div>
+</progress>

_includes/progress.html

@@ -0,0 +1,12 @@
+<progress class="progress" value="25" max="100">
+  25%
+</progress>
+<progress class="progress" value="50" max="100">
+  50%
+</progress>
+<progress class="progress" value="75" max="100">
+  75%
+</progress>
+<progress class="progress" value="100" max="100">
+  100%
+</progress>

_layouts/default.html

@@ -10,8 +10,8 @@
       {{ site.name }}
     </title>
 
-    <link rel="stylesheet" href="wtf-forms.css">
-    <link rel="stylesheet" href="docs.css">
+    <link rel="stylesheet" href="/wtf-forms.css">
+    <link rel="stylesheet" href="/docs.css">
     <link rel="stylesheet" href="http://fonts.googleapis.com/css?family=PT+Sans:400,700,400italic|PT+Mono&amp;subset=latin,cyrillic">
 
     <script>

index.md

@@ -99,10 +99,56 @@ 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.
 
 
+### Progress
+
+<form class="controls-stacked">
+  {% include progress.html %}
+</form>
+```html
+{% include progress.html %}
+```
+
+The `<progress>` element is actually pretty straightforward to style, but it does have some gotchas. Here's the deal:
+
+* Unlike most other custom inputs, we don't wrap it in an extra element. We just add `.progress`.
+* Using pseudo selectors, we target aspects of the `<progress>` element. For example, in WebKit browsers, `::-webkit-progress-bar` is the background bar and `::-webkit-progress-value` is the colored progress bar within.
+* Firefox has it's own pseudo selectors that must be applied with duplicate rulesets. Chaining `::-webkit-` and `::-moz-` pseudo selectors will nullify your styles. (It's worth noting this happens with other pseudo selectors like `placeholder`).
+* IE10 is the only version of IE to support `<progress>`. The only quirk there is that you must set the `color` property on the `<progress>` element to colorize the progress bar within.
+
+For more information, [read the rather thorough CSS Tricks article](http://css-tricks.com/html5-progress-element/). There you'll find gotchas around generated content, browser quirks, and more. The MDN also has an informative [article on the progress element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/progress).
+
+#### Custom width
+
+The `width` is autmatically set by the browser, but you can easily change it by adding some CSS to `.progress`.
+
+```css
+.progress {
+  width: 100%;
+}
+```
+
+#### Internet Explorer 9 support
+
+<form class="controls-stacked">
+  {% include progress-ie9.html %}
+</form>
+```html
+{% include progress-ie9.html %}
+```
+
+IE10 natively supports the `<progress>` element, but IE9 doesn't. Instead, they simply show as plain text values. However, IE9 support is just a few hacks away:
+
+* We add custom markup *within* the existing `<progress>` element to simulate the background and inner progress bar.
+* We copy-paste the styles from the pseudo selectors to a IE9-specific media query (like I said, a few hacks) to only apply when necessary.
+* Lastly, to simulate the native `<progress>` behavior, we add `text-indent: -999rem;` to the custom `.progress-bar` to hide the text value.
+
+**Once applied, you can use the IE9-compatible snippet in all browsers.** However, I encourage you to only do so should you need IE9 support.
+
+
 ### FAQs
 
 #### What about every other form control?
-For the time being, **WTF, forms?** is limited to checkboxes, radio buttons, select menus, and file inputs. Additional custom inputs will depend on browser support.
+For the time being, **WTF, forms?** is limited to checkboxes, radio buttons, select menus, file inputs, and progress bars. Additional custom inputs will depend on browser support.
 
 #### Why are there no `for` attributes?
 We nest our `<input>`s and `<select>`s within a `<label>`, so there's no need to specify a `for` attribute as the browser will automatically associate the two.

test.html

@@ -0,0 +1,28 @@
+---
+layout: default
+title: Test
+---
+
+<br><br><br><br>
+
+<form class="controls-stacked">
+  {% include checkbox.html %}
+</form>
+
+<form class="controls-stacked">
+  {% include radio.html %}
+</form>
+
+<form class="controls-stacked">
+  {% include select.html %}
+</form>
+
+<form class="controls-stacked">
+  {% include file.html %}
+</form>
+
+<form class="controls-stacked">
+  {% include progress.html %}
+</form>
+
+<br><br><br><br>

wtf-forms.css

@@ -275,17 +275,89 @@
 
 
 
+/*
+ * Progress
+ */
+
+.progress {
+  display: inline-block;
+  height: 1rem;
+}
+.progress[value] {
+  /* Reset the default appearance */
+  -webkit-appearance: none;
+     -moz-appearance: none;
+          appearance: none;
+  /* Remove Firefox and Opera border */
+  border: 0;
+  /* IE10 uses `color` to set the bar background-color */
+  color: #0074d9;
+}
+.progress[value]::-webkit-progress-bar {
+  background-color: #eee;
+  border-radius: .2rem;
+}
+.progress[value]::-webkit-progress-value {
+  background-color: #0074d9;
+  border-top-left-radius: .2rem;
+  border-bottom-left-radius: .2rem;
+}
+.progress[value="100"]::-webkit-progress-value {
+  border-top-right-radius: .2rem;
+  border-bottom-right-radius: .2rem;
+}
+
+/* Firefox styles must be entirely separate or it busts Webkit styles. */
+@-moz-document url-prefix() {
+  .progress[value] {
+    background-color: #eee;
+    border-radius: .2rem;
+  }
+  .progress[value]::-moz-progress-bar {
+    background-color: #0074d9;
+    border-top-left-radius: .2rem;
+    border-bottom-left-radius: .2rem;
+  }
+  .progress[value="100"]::-moz-progress-bar {
+    border-top-right-radius: .2rem;
+    border-bottom-right-radius: .2rem;
+  }
+}
+
+/* IE9 hacks to accompany custom markup. We don't need to scope this via media queries, but I feel better doing it anyway. */
+@media screen and (min-width:0\0) {
+  .progress {
+    background-color: #eee;
+    border-radius: .2rem;
+  }
+  .progress-bar {
+    display: inline-block;
+    height: 1rem;
+    text-indent: -999rem; /* Simulate hiding of value as in native `<progress>` */
+    background-color: #0074d9;
+    border-top-left-radius: .2rem;
+    border-bottom-left-radius: .2rem;
+  }
+  .progress[width="100%"] {
+    border-top-right-radius: .2rem;
+    border-bottom-right-radius: .2rem;
+  }
+}
+
+
 /*
  * Control layouts
  */
 
 .controls-stacked {
   margin: 1rem 0;
 }
-.controls-stacked .control {
+.controls-stacked .control,
+.controls-stacked .progress {
   display: block;
 }
-.controls-stacked .control + .control {
+.controls-stacked .control + .control,
+.controls-stacked .progress + .progress {
   margin-top: .5rem;
 }