From c1d5a801b4bc66e3866f815be00e11d1b20d3539 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 24 Jun 2023 14:44:36 +0200 Subject: Adding upstream version 5.3.0+dfsg. Signed-off-by: Daniel Baumann --- site/content/docs/5.3/components/alerts.md | 242 +++++++++++++++++++++++++++++ 1 file changed, 242 insertions(+) create mode 100644 site/content/docs/5.3/components/alerts.md (limited to 'site/content/docs/5.3/components/alerts.md') diff --git a/site/content/docs/5.3/components/alerts.md b/site/content/docs/5.3/components/alerts.md new file mode 100644 index 0000000..d634ce2 --- /dev/null +++ b/site/content/docs/5.3/components/alerts.md @@ -0,0 +1,242 @@ +--- +layout: docs +title: Alerts +description: Provide contextual feedback messages for typical user actions with the handful of available and flexible alert messages. +group: components +toc: true +--- + +## Examples + +Alerts are available for any length of text, as well as an optional close button. For proper styling, use one of the eight **required** contextual classes (e.g., `.alert-success`). For inline dismissal, use the [alerts JavaScript plugin](#dismissing). + +{{< callout info >}} +**Heads up!** As of v5.3.0, the `alert-variant()` Sass mixin is deprecated. Alert variants now have their CSS variables overridden in [a Sass loop](#sass-loops). +{{< /callout >}} + +{{< example >}} +{{< alerts.inline >}} +{{- range (index $.Site.Data "theme-colors") }} +{{- end -}} +{{< /alerts.inline >}} +{{< /example >}} + +{{< callout info >}} +{{< partial "callouts/warning-color-assistive-technologies.md" >}} +{{< /callout >}} + +### Live example + +Click the button below to show an alert (hidden with inline styles to start), then dismiss (and destroy) it with the built-in close button. + +{{< example stackblitz_add_js="true" >}} +
+ +{{< /example >}} + +We use the following JavaScript to trigger our live alert demo: + +{{< js-docs name="live-alert" file="site/assets/js/snippets.js" >}} + +### Link color + +Use the `.alert-link` utility class to quickly provide matching colored links within any alert. + +{{< example >}} +{{< alerts.inline >}} +{{- range (index $.Site.Data "theme-colors") }} +{{ end -}} +{{< /alerts.inline >}} +{{< /example >}} + +### Additional content + +Alerts can also contain additional HTML elements like headings, paragraphs and dividers. + +{{< example >}} + +{{< /example >}} + +### Icons + +Similarly, you can use [flexbox utilities]({{< docsref "/utilities/flex" >}}) and [Bootstrap Icons]({{< param icons >}}) to create alerts with icons. Depending on your icons and content, you may want to add more utilities or custom styles. + +{{< example >}} + +{{< /example >}} + +Need more than one icon for your alerts? Consider using more Bootstrap Icons and making a local SVG sprite like so to easily reference the same icons repeatedly. + +{{< example >}} + + + + + + + + + + + + + + + + +{{< /example >}} + +### Dismissing + +Using the alert JavaScript plugin, it's possible to dismiss any alert inline. Here's how: + +- Be sure you've loaded the alert plugin, or the compiled Bootstrap JavaScript. +- Add a [close button]({{< docsref "/components/close-button" >}}) and the `.alert-dismissible` class, which adds extra padding to the right of the alert and positions the close button. +- On the close button, add the `data-bs-dismiss="alert"` attribute, which triggers the JavaScript functionality. Be sure to use the ` + +{{< /example >}} + +{{< callout warning >}} +When an alert is dismissed, the element is completely removed from the page structure. If a keyboard user dismisses the alert using the close button, their focus will suddenly be lost and, depending on the browser, reset to the start of the page/document. For this reason, we recommend including additional JavaScript that listens for the `closed.bs.alert` event and programmatically sets `focus()` to the most appropriate location in the page. If you're planning to move focus to a non-interactive element that normally does not receive focus, make sure to add `tabindex="-1"` to the element. +{{< /callout >}} + +## CSS + +### Variables + +{{< added-in "5.2.0" >}} + +As part of Bootstrap's evolving CSS variables approach, alerts now use local CSS variables on `.alert` for enhanced real-time customization. Values for the CSS variables are set via Sass, so Sass customization is still supported, too. + +{{< scss-docs name="alert-css-vars" file="scss/_alert.scss" >}} + +### Sass variables + +{{< scss-docs name="alert-variables" file="scss/_variables.scss" >}} + +### Sass mixins + +{{< deprecated-in "5.3.0" >}} + +Used in combination with `$theme-colors` to create contextual modifier classes for our alerts. + +{{< scss-docs name="alert-variant-mixin" file="scss/mixins/_alert.scss" >}} + +### Sass loops + +Loop that generates the modifier classes with the `alert-variant()` mixin. + +{{< scss-docs name="alert-modifiers" file="scss/_alert.scss" >}} + +## JavaScript behavior + +### Initialize + +Initialize elements as alerts + +```js +const alertList = document.querySelectorAll('.alert') +const alerts = [...alertList].map(element => new bootstrap.Alert(element)) +``` + +{{< callout info >}} +For the sole purpose of dismissing an alert, it isn't necessary to initialize the component manually via the JS API. By making use of `data-bs-dismiss="alert"`, the component will be initialized automatically and properly dismissed. + +See the [triggers](#triggers) section for more details. +{{< /callout >}} + +### Triggers + +{{% js-dismiss "alert" %}} + +**Note that closing an alert will remove it from the DOM.** + +### Methods + +You can create an alert instance with the alert constructor, for example: + +```js +const bsAlert = new bootstrap.Alert('#myAlert') +``` + +This makes an alert listen for click events on descendant elements which have the `data-bs-dismiss="alert"` attribute. (Not necessary when using the data-api’s auto-initialization.) + +{{< bs-table >}} +| Method | Description | +| --- | --- | +| `close` | Closes an alert by removing it from the DOM. If the `.fade` and `.show` classes are present on the element, the alert will fade out before it is removed. | +| `dispose` | Destroys an element's alert. (Removes stored data on the DOM element) | +| `getInstance` | Static method which allows you to get the alert instance associated to a DOM element. For example: `bootstrap.Alert.getInstance(alert)`. | +| `getOrCreateInstance` | Static method which returns an alert instance associated to a DOM element or create a new one in case it wasn't initialized. You can use it like this: `bootstrap.Alert.getOrCreateInstance(element)`. | +{{< /bs-table >}} + +Basic usage: + +```js +const alert = bootstrap.Alert.getOrCreateInstance('#myAlert') +alert.close() +``` + +### Events + +Bootstrap's alert plugin exposes a few events for hooking into alert functionality. + +{{< bs-table >}} +| Event | Description | +| --- | --- | +| `close.bs.alert` | Fires immediately when the `close` instance method is called. | +| `closed.bs.alert` | Fired when the alert has been closed and CSS transitions have completed. | +{{< /bs-table >}} + +```js +const myAlert = document.getElementById('myAlert') +myAlert.addEventListener('closed.bs.alert', event => { + // do something, for instance, explicitly move focus to the most appropriate element, + // so it doesn't get lost/reset to the start of the page + // document.getElementById('...').focus() +}) +``` -- cgit v1.2.3