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https://github.com/BookStackApp/BookStack.git
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7590ecd37c
- Updated comment routes to be simpler. - Updated comments JS to align better with updated component system. - Documented available global JS functions/services. - Removed redundant controller method. - Added window.$events helpers for validation messages and success/error. - Updated JS events system to not be class based for simplicity. - Added window.trans_plural method to handle pluralisation/replacements where you already have the translation string itself. Fixes #1836
99 lines
2.5 KiB
Markdown
99 lines
2.5 KiB
Markdown
# JavaScript Components
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This document details the format for JavaScript components in BookStack. This is a really simple class-based setup with a few helpers provided.
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#### Defining a Component in JS
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```js
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class Dropdown {
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setup() {
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this.toggle = this.$refs.toggle;
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this.menu = this.$refs.menu;
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this.speed = parseInt(this.$opts.speed);
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}
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}
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```
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All usage of $refs, $manyRefs and $opts should be done at the top of the `setup` function so any requirements can be easily seen.
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#### Using a Component in HTML
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A component is used like so:
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```html
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<div component="dropdown"></div>
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<!-- or, for multiple -->
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<div components="dropdown image-picker"></div>
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```
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The names will be parsed and new component instance will be created if a matching name is found in the `components/index.js` componentMapping.
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#### Element References
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Within a component you'll often need to refer to other element instances. This can be done like so:
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```html
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<div component="dropdown">
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<span refs="dropdown@toggle othercomponent@handle">View more</span>
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</div>
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```
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You can then access the span element as `this.$refs.toggle` in your component.
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#### Component Options
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```html
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<div component="dropdown"
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option:dropdown:delay="500"
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option:dropdown:show>
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</div>
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```
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Will result with `this.$opts` being:
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```json
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{
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"delay": "500",
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"show": ""
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}
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```
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#### Global Helpers
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There are various global helper libraries which can be used in components:
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```js
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// HTTP service
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window.$http.get(url, params);
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window.$http.post(url, data);
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window.$http.put(url, data);
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window.$http.delete(url, data);
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window.$http.patch(url, data);
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// Global event system
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// Emit a global event
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window.$events.emit(eventName, eventData);
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// Listen to a global event
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window.$events.listen(eventName, callback);
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// Show a success message
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window.$events.success(message);
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// Show an error message
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window.$events.error(message);
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// Show validation errors, if existing, as an error notification
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window.$events.showValidationErrors(error);
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// Translator
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// Take the given plural text and count to decide on what plural option
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// to use, Similar to laravel's trans_choice function but instead
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// takes the direction directly instead of a translation key.
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window.trans_plural(translationString, count, replacements);
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// Component System
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// Parse and initialise any components from the given root el down.
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window.components.init(rootEl);
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// Get the first active component of the given name
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window.components.first(name);
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``` |