From bf39bb3ac3d2aef4687b3cd4762015d5f218e2bc Mon Sep 17 00:00:00 2001 From: Starsam80 Date: Thu, 27 Oct 2016 16:13:17 -0600 Subject: Rename `.active` to `.show` --- docs/components/dropdowns.md | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'docs/components/dropdowns.md') diff --git a/docs/components/dropdowns.md b/docs/components/dropdowns.md index 3e9948b3d..d26de6eef 100644 --- a/docs/components/dropdowns.md +++ b/docs/components/dropdowns.md @@ -21,7 +21,7 @@ Wrap the dropdown's toggle (your button or link) and the dropdown menu within `. Any single `.btn` can be turned into a dropdown toggle with some markup changes. Here's how you can put them to work with either ` @@ -36,7 +36,7 @@ Any single `.btn` can be turned into a dropdown toggle with some markup changes. And with `` elements: {% example html %} -
+
@@ -407,7 +407,7 @@ Trigger dropdown menus above elements by adding `.dropup` to the parent element. Historically dropdown menu contents *had* to be links, but that's no longer the case with v4. Now you can optionally use ` @@ -480,7 +480,7 @@ Add `.disabled` to items in the dropdown to **style them as disabled**. ## Usage -Via data attributes or JavaScript, the dropdown plugin toggles hidden content (dropdown menus) by toggling the `.active` class on the parent list item. +Via data attributes or JavaScript, the dropdown plugin toggles hidden content (dropdown menus) by toggling the `.show` class on the parent list item. On mobile devices, opening a dropdown adds a `.dropdown-backdrop` as a tap area for closing dropdown menus when tapping outside the menu, a requirement for proper iOS support. **This means that switching from an open dropdown menu to a different dropdown menu requires an extra tap on mobile.** -- cgit v1.2.3 From f3d0fee91ec30aa6cde08de821b06fd6f337a3a3 Mon Sep 17 00:00:00 2001 From: Mark Otto Date: Tue, 3 Jan 2017 19:24:24 -0800 Subject: fixes #21454 by revamping some docs styles for dropdowns --- docs/components/dropdowns.md | 60 +++++++++++++++++++++----------------------- 1 file changed, 29 insertions(+), 31 deletions(-) (limited to 'docs/components/dropdowns.md') diff --git a/docs/components/dropdowns.md b/docs/components/dropdowns.md index d26de6eef..3c68f9453 100644 --- a/docs/components/dropdowns.md +++ b/docs/components/dropdowns.md @@ -21,7 +21,7 @@ Wrap the dropdown's toggle (your button or link) and the dropdown menu within `. Any single `.btn` can be turned into a dropdown toggle with some markup changes. Here's how you can put them to work with either ` @@ -252,7 +252,7 @@ Button dropdowns work with buttons of all sizes, including default and split dro Separated link
-
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@@ -407,7 +405,7 @@ Trigger dropdown menus above elements by adding `.dropup` to the parent element. Historically dropdown menu contents *had* to be links, but that's no longer the case with v4. Now you can optionally use ` @@ -510,7 +508,7 @@ $('.dropdown-toggle').dropdown() {% endhighlight %} {% callout info %} -#### `data-toggle="dropdown"` still required +##### `data-toggle="dropdown"` still required Regardless of whether you call your dropdown via JavaScript or instead use the data-api, `data-toggle="dropdown"` is always required to be present on the dropdown's trigger element. {% endcallout %} -- cgit v1.2.3 From 3275ca4b30383390d3475beb8c4f43343ab31f5c Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Wed, 12 Apr 2017 13:54:16 +0100 Subject: Reword "mobile" to "touch-enabled" ...as touch is not exclusive to "mobile" anymore nowadays. also explicitly clarifies this is a fix for iOS, and that it impacts touch laptops etc as well. lastly, renames the variable from "dropdown" to "backdrop" for clarity/consistency --- docs/components/dropdowns.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'docs/components/dropdowns.md') diff --git a/docs/components/dropdowns.md b/docs/components/dropdowns.md index 3c68f9453..bb54c040e 100644 --- a/docs/components/dropdowns.md +++ b/docs/components/dropdowns.md @@ -480,7 +480,7 @@ Add `.disabled` to items in the dropdown to **style them as disabled**. Via data attributes or JavaScript, the dropdown plugin toggles hidden content (dropdown menus) by toggling the `.show` class on the parent list item. -On mobile devices, opening a dropdown adds a `.dropdown-backdrop` as a tap area for closing dropdown menus when tapping outside the menu, a requirement for proper iOS support. **This means that switching from an open dropdown menu to a different dropdown menu requires an extra tap on mobile.** +On touch-enabled devices, opening a dropdown adds a `.dropdown-backdrop` as a tap area for closing dropdown menus when tapping outside the menu, to work around a quirk in iOS' event delegation. **This means that once a dropdown menu is open, any tap or click (including with a mouse, on a multi-input device such as a laptop with a touchscreen) outside of the menu will be intercepted to close the menu. Opening another dropdown menu, or activating any other control or link, will therefore require an extra tap or click.** Note: The `data-toggle="dropdown"` attribute is relied on for closing dropdown menus at an application level, so it's a good idea to always use it. -- cgit v1.2.3 From 6d64afe508bfd0bcfb5831a9a4708cef4ad88334 Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Fri, 14 Apr 2017 09:19:00 +0100 Subject: Replace dropdown backdrop hack with cleaner JS-only hack * Replace backdrop with simple noop mouse listener As discussed in https://github.com/twbs/bootstrap/pull/22422 the current approach of injecting a backdrop (to work around iOS' broken event delegation for the `click` event) has annoying consequences on touch-enabled laptop/desktop devices. Instead of a backdrop `
`, here we simply add extra empty/noop mouse listeners to the immediate children of `` (and remove them when the dropdown is closed) in order to force iOS to properly bubble a `click` resulting from a tap (essentially, method 2 from https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html) This is sufficient (except in rare cases where the user does manage to tap on the body itself, rather than any child elements of body - which is not very likely in an iOS phone/tablet scenario for most layouts) to get iOS to get a grip and do the correct event bubbling/delegation, meaning the regular "click" event will bubble back to the `` when tapping outside of the dropdown, and the dropdown will close properly (just like it already does, even without this fix, in non-iOS touchscreen devices/browsers, like Chrome/Android and Windows on a touch laptop). This approach, though a bit hacky, has no impact on the DOM structure, and has no unforeseen side effects on touch-enabled laptops/desktops. And crucially, it works just fine in iOS. * Remove dropdown backdrop styles * Update doc for dropdowns and touch-enabled devices --- docs/components/dropdowns.md | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'docs/components/dropdowns.md') diff --git a/docs/components/dropdowns.md b/docs/components/dropdowns.md index bb54c040e..0be8d4d74 100644 --- a/docs/components/dropdowns.md +++ b/docs/components/dropdowns.md @@ -480,7 +480,9 @@ Add `.disabled` to items in the dropdown to **style them as disabled**. Via data attributes or JavaScript, the dropdown plugin toggles hidden content (dropdown menus) by toggling the `.show` class on the parent list item. -On touch-enabled devices, opening a dropdown adds a `.dropdown-backdrop` as a tap area for closing dropdown menus when tapping outside the menu, to work around a quirk in iOS' event delegation. **This means that once a dropdown menu is open, any tap or click (including with a mouse, on a multi-input device such as a laptop with a touchscreen) outside of the menu will be intercepted to close the menu. Opening another dropdown menu, or activating any other control or link, will therefore require an extra tap or click.** +{% callout info %} +On touch-enabled devices, opening a dropdown adds empty (`$.noop`) `mouseover` handlers to the immediate children of the `` element. This admittedly ugly hack is necessary to work around a [quirk in iOS' event delegation](https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html), which would otherwise prevent a tap anywhere outside of the dropdown from triggering the code that closes the dropdown. Once the dropdown is closed, these additional empty `mouseover` handlers are removed. +{% endcallout %} Note: The `data-toggle="dropdown"` attribute is relied on for closing dropdown menus at an application level, so it's a good idea to always use it. -- cgit v1.2.3 From 9a3e002e8f92b09d027083d3fc74750d6e56ef6e Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Tue, 18 Apr 2017 09:34:55 +0100 Subject: Add dropdown menu accessibility callout and fix example As the question often comes up about why Bootstrap does not do "true" ARIA menus (with their `role="menu"` etc), add an admittedly lengthy note (tl;dr because BS is generic, and ARIA menus are specific and quite limiting). Additionally, fixes up the `` example for dropdown trigger, with the missing `role="button"` and neutering the `href` (which would be useless anyway since BS overrides the link-like nature of the `` so it could never be triggered/followed anyway) --- docs/components/dropdowns.md | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'docs/components/dropdowns.md') diff --git a/docs/components/dropdowns.md b/docs/components/dropdowns.md index 0be8d4d74..4da232b7d 100644 --- a/docs/components/dropdowns.md +++ b/docs/components/dropdowns.md @@ -16,6 +16,16 @@ Dropdowns are toggleable, contextual overlays for displaying lists of links and Wrap the dropdown's toggle (your button or link) and the dropdown menu within `.dropdown`, or another element that declares `position: relative;`. Dropdowns can be triggered from `` or ` -
- Action - Another action - Something else here -
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-{% endexample %} - -And with `` elements: - -{% example html %} -
- - -
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-{% endexample %} - -The best part is you can do this with any button variant, too: - -
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- -{% highlight html %} - -
- -
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-{% endhighlight %} - -### Split button dropdowns - -Similarly, create split button dropdowns with virtually the same markup as single button dropdowns, but with the addition of `.dropdown-toggle-split` for proper spacing around the dropdown caret. - -We use this extra class to reduce the horizontal `padding` on either side of the caret by 25% and remove the `margin-left` that's added for regular button dropdowns. Those extra changes keep the caret centered in the split button and provide a more appropriately sized hit area next to the main button. - -
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- -{% highlight html %} - -
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-{% endhighlight %} - -## Sizing - -Button dropdowns work with buttons of all sizes, including default and split dropdown buttons. - -
- - -
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-{% endhighlight %} - -## Dropup variation - -Trigger dropdown menus above elements by adding `.dropup` to the parent element. - -
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- -{% highlight html %} - -
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-{% endhighlight %} - -## Menu items - -Historically dropdown menu contents *had* to be links, but that's no longer the case with v4. Now you can optionally use ` -
- - - -
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-{% endexample %} - -## Menu alignment - -By default, a dropdown menu is automatically positioned 100% from the top and along the left side of its parent. Add `.dropdown-menu-right` to a `.dropdown-menu` to right align the dropdown menu. - -{% callout info %} -**Heads up!** Dropdowns are positioned only with CSS and may need some additional styles for exact alignment. -{% endcallout %} - -{% example html %} -
- -
- - - -
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-{% endexample %} - -## Menu headers - -Add a header to label sections of actions in any dropdown menu. - -{% example html %} -
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Dropdown header
- Action - Another action -
-{% endexample %} - -## Menu dividers - -Separate groups of related menu items with a divider. - -{% example html %} -
- Action - Another action - Something else here -
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-{% endexample %} - -## Disabled menu items - -Add `.disabled` to items in the dropdown to **style them as disabled**. - -{% example html %} -
- Regular link - Disabled link - Another link -
-{% endexample %} - -## Usage - -Via data attributes or JavaScript, the dropdown plugin toggles hidden content (dropdown menus) by toggling the `.show` class on the parent list item. - -{% callout info %} -On touch-enabled devices, opening a dropdown adds empty (`$.noop`) `mouseover` handlers to the immediate children of the `` element. This admittedly ugly hack is necessary to work around a [quirk in iOS' event delegation](https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html), which would otherwise prevent a tap anywhere outside of the dropdown from triggering the code that closes the dropdown. Once the dropdown is closed, these additional empty `mouseover` handlers are removed. -{% endcallout %} - -Note: The `data-toggle="dropdown"` attribute is relied on for closing dropdown menus at an application level, so it's a good idea to always use it. - -### Via data attributes - -Add `data-toggle="dropdown"` to a link or button to toggle a dropdown. - -{% highlight html %} -
- -
- ... -
-
-{% endhighlight %} - -### Via JavaScript - -Call the dropdowns via JavaScript: - -{% highlight js %} -$('.dropdown-toggle').dropdown() -{% endhighlight %} - -{% callout info %} -##### `data-toggle="dropdown"` still required - -Regardless of whether you call your dropdown via JavaScript or instead use the data-api, `data-toggle="dropdown"` is always required to be present on the dropdown's trigger element. -{% endcallout %} - -### Options - -Options can be passed via data attributes or JavaScript. For data attributes, append the option name to `data-`, as in `data-placement=""`. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
NameTypeDefaultDescription
placementstring'bottom' -

How to position the popover - top | bottom.

-
offsetnumber | string0Offset of the dropdown relative to its target. For more information refer to Popper.js's offset docs.
flipbooleantrueAllow Dropdown to flip in case of an overlapping on the reference element. For more information refer to Popper.js's flip docs.
- -### Methods - -| Method | Description | -| --- | --- | -| `$().dropdown('toggle')` | Toggles the dropdown menu of a given navbar or tabbed navigation. | -| `$().dropdown('update')` | Updates the position of an element's dropdown. | - -### Events - -All dropdown events are fired at the `.dropdown-menu`'s parent element and have a `relatedTarget` property, whose value is the toggling anchor element. - -| Event | Description | -| --- | --- | -| `show.bs.dropdown` | This event fires immediately when the show instance method is called. | -| `shown.bs.dropdown` | This event is fired when the dropdown has been made visible to the user (will wait for CSS transitions, to complete). | -| `hide.bs.dropdown` | This event is fired immediately when the hide instance method has been called. | -| `hidden.bs.dropdown`| This event is fired when the dropdown has finished being hidden from the user (will wait for CSS transitions, to complete). | - -{% highlight js %} -$('#myDropdown').on('show.bs.dropdown', function () { - // do something… -}) -{% endhighlight %} -- cgit v1.2.3