@aidinabedi/playcanvas

<!doctype html> <html lang="en"> <head> <title>pc.I18n | PlayCanvas API Reference</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="icon" type="image/png" href="images/playcanvas-favicon.png"> <link href="styles/styles.css" rel="stylesheet"> <link href="styles/playcanvas-theme.css" rel="stylesheet"> <script src="scripts/interface.js"></script> <script src="scripts/highlight.min.js"></script> <script>hljs.initHighlightingOnLoad();</script> </head> <body> <header> <nav class="header-width"> <a href="/" class="header-title"><img src="images/playcanvas-manual.png"></a> <ul class="header-menu"> <li class="user-manual"><a href="https://developer.playcanvas.com/en/user-manual/">User Manual</a></li> <li class="tutorials"><a href="https://developer.playcanvas.com/en/tutorials">Tutorials</a></li> <li class="forum"><a href="https://forum.playcanvas.com/" target="_blank">Forum</a></li> <li class="api active"><a href="/api/">API Reference</a></li> </ul> 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Responsible for loading localization assets and returning translations for a certain key. Can also handle plural forms. To override its default behaviour define a different implementation for <a href="pc.I18n.html#getText">pc.I18n#getText</a> and <a href="pc.I18n.html#getPluralText">pc.I18n#getPluralText</a>.</p></p>  <h1>Summary</h1>     <h3>Properties</h3> <table class="properties"> <tr> <td><a href="#assets">assets</a></td><td><p>An array of asset ids or assets that contain localization data in the expected format.</td> </tr> <tr> <td><a href="#locale">locale</a></td><td><p>The current locale for example "en-US".</td> </tr> </table>  <h3>Methods</h3> <table class="properties"> <tr> <td><a href="#addData">addData</a></td><td><p>Adds localization data.</td> </tr> <tr> <td><a href="#destroy">destroy</a></td><td><p>Frees up memory.</td> </tr> <tr> <td><a href="#findAvailableLocale">findAvailableLocale</a></td><td><p>Returns the first available locale based on the desired locale specified.</td> </tr> <tr> <td><a href="#getPluralText">getPluralText</a></td><td><p>Returns the pluralized translation for the specified key, number n and locale.</td> </tr> <tr> <td><a href="#getText">getText</a></td><td><p>Returns the translation for the specified key and locale.</td> </tr> <tr> <td><a href="#removeData">removeData</a></td><td><p>Removes localization data.</td> </tr> </table>  <h2>Inherited</h2>    <h3>Methods</h3> <table class="properties"> <tr> <td><a href="#fire">fire</a></td><td><p>Fire an event, all additional arguments are passed on to the event listener.</td> </tr> <tr> <td><a href="#hasEvent">hasEvent</a></td><td><p>Test if there are any handlers bound to an event name.</td> </tr> <tr> <td><a href="#off">off</a></td><td><p>Detach an event handler from an event.</td> </tr> <tr> <td><a href="#on">on</a></td><td><p>Attach an event handler to an event.</td> </tr> <tr> <td><a href="#once">once</a></td><td><p>Attach an event handler to an event.</td> </tr> </table>  <h1>Details</h1>    <h2>Constructor</h2>  <div id="I18n"> <h3 class="methodname">I18n(app) <a class="font-icon" href="#I18n"></a></h3> <p></p> <h4>Parameters</h4> <table> <tr> <td>app</td><td><a href="pc.Application.html">pc.Application</a></td><td><p>The application.</p></td> </tr> </table> </div>  <h2>Properties</h2> <div id="assets"> <span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number[]</a>, <a href="pc.Asset.html">pc.Asset[]</a></span><span class="property">assets <a class="font-icon" href="#assets"></a></span> <p><p>An array of asset ids or assets that contain localization data in the expected format. I18n will automatically load translations from these assets as the assets are loaded and it will also automatically unload translations if the assets get removed or unloaded at runtime.</p></p> </div> <div id="locale"> <span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></span><span class="property">locale <a class="font-icon" href="#locale"></a></span> <p><p>The current locale for example "en-US". Changing the locale will raise an event which will cause localized Text Elements to change language to the new locale.</p></p> </div>  <h2>Methods</h2> <div id="addData"> <h3 class="methodname">addData(data) <a class="font-icon" href="#addData"></a></h3> <p><p>Adds localization data. If the locale and key for a translation already exists it will be overwritten.</p></p> <pre><code class="javascript">this.app.i18n.addData({ header: { version: 1 }, data: [{ info: { locale: 'en-US' }, messages: { "key": "translation", // The number of plural forms depends on the locale. See the manual for more information. "plural_key": ["one item", "more than one items"] } }, { info: { locale: 'fr-FR' }, messages: { // ... } }] });</code></pre> <h4>Parameters</h4> <table> <tr> <td>data</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>The localization data. See example for the expected format of the data.</p></td> </tr> </table> </div> <div id="destroy"> <h3 class="methodname">destroy() <a class="font-icon" href="#destroy"></a></h3> <p><p>Frees up memory.</p></p> </div> <div id="findAvailableLocale"> <h3 class="methodname">findAvailableLocale(desiredLocale, availableLocales) <a class="font-icon" href="#findAvailableLocale"></a></h3> <p><p>Returns the first available locale based on the desired locale specified. First tries to find the desired locale and then tries to find an alternative locale based on the language.</p></p> <h4>Parameters</h4> <table> <tr> <td>desiredLocale</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>The desired locale e.g. En-US.</p></td> </tr> <tr> <td>availableLocales</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>A dictionary where each key is an available locale.</p></td> </tr> </table> <h4>Returns</h4> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a> <p>The locale found or if no locale is available returns the default en-US locale.</p> </div> <div id="getPluralText"> <h3 class="methodname">getPluralText(key, n, [locale]) <a class="font-icon" href="#getPluralText"></a></h3> <p><p>Returns the pluralized translation for the specified key, number n and locale. If the locale is not specified it will use the current locale.</p></p> <pre><code class="javascript">// manually replace {number} in the resulting translation with our number var localized = this.app.i18n.getPluralText('{number} apples', number).replace("{number}", number);</code></pre> <h4>Parameters</h4> <table> <tr> <td>key</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>The localization key.</p></td> </tr> <tr> <td>n</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></td><td><p>The number used to determine which plural form to use. E.g. For the phrase "5 Apples" n equals 5.</p></td> </tr> <tr> <td>locale</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>The desired locale.</p></td> </tr> </table> <h4>Returns</h4> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a> <p>The translated text. If no translations are found at all for the locale then it will return the en-US translation. If no translation exists for that key then it will return the localization key.</p> </div> <div id="getText"> <h3 class="methodname">getText(key, [locale]) <a class="font-icon" href="#getText"></a></h3> <p><p>Returns the translation for the specified key and locale. If the locale is not specified it will use the current locale.</p></p> <pre><code class="javascript">var localized = this.app.i18n.getText('localization-key'); var localizedFrench = this.app.i18n.getText('localization-key', 'fr-FR');</code></pre> <h4>Parameters</h4> <table> <tr> <td>key</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>The localization key.</p></td> </tr> <tr> <td>locale</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>The desired locale.</p></td> </tr> </table> <h4>Returns</h4> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a> <p>The translated text. If no translations are found at all for the locale then it will return the en-US translation. If no translation exists for that key then it will return the localization key.</p> </div> <div id="removeData"> <h3 class="methodname">removeData(data) <a class="font-icon" href="#removeData"></a></h3> <p><p>Removes localization data.</p></p> <h4>Parameters</h4> <table> <tr> <td>data</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>The localization data. The data is expected to be in the same format as <a href="pc.I18n.html#addData">pc.I18n#addData</a>.</p></td> </tr> </table> </div>  <h2>Inherited</h2>   <h2>Methods</h2> <div id="fire"> <h3 class="methodname">fire(name, [arg1], [arg2], [arg3], [arg4], [arg5], [arg6], [arg7], [arg8]) <a class="font-icon" href="#fire"></a></h3> <p><p>Fire an event, all additional arguments are passed on to the event listener.</p></p> <pre><code class="javascript">obj.fire('test', 'This is the message');</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Name of event to fire.</p></td> </tr> <tr> <td>arg1</td><td><a href="#">*</a></td><td><p>First argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg2</td><td><a href="#">*</a></td><td><p>Second argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg3</td><td><a href="#">*</a></td><td><p>Third argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg4</td><td><a href="#">*</a></td><td><p>Fourth argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg5</td><td><a href="#">*</a></td><td><p>Fifth argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg6</td><td><a href="#">*</a></td><td><p>Sixth argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg7</td><td><a href="#">*</a></td><td><p>Seventh argument that is passed to the event handler.</p></td> </tr> <tr> <td>arg8</td><td><a href="#">*</a></td><td><p>Eighth argument that is passed to the event handler.</p></td> </tr> </table> <h4>Returns</h4> <a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p> </div> <div id="hasEvent"> <h3 class="methodname">hasEvent(name) <a class="font-icon" href="#hasEvent"></a></h3> <p><p>Test if there are any handlers bound to an event name.</p></p> <pre><code class="javascript">obj.on('test', function () { }); // bind an event to 'test' obj.hasEvent('test'); // returns true obj.hasEvent('hello'); // returns false</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>The name of the event to test.</p></td> </tr> </table> <h4>Returns</h4> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a> <p>True if the object has handlers bound to the specified event name.</p> </div> <div id="off"> <h3 class="methodname">off([name], [callback], [scope]) <a class="font-icon" href="#off"></a></h3> <p><p>Detach an event handler from an event. If callback is not provided then all callbacks are unbound from the event, if scope is not provided then all events with the callback will be unbound.</p></p> <pre><code class="javascript">var handler = function () { }; obj.on('test', handler); obj.off(); // Removes all events obj.off('test'); // Removes all events called 'test' obj.off('test', handler); // Removes all handler functions, called 'test' obj.off('test', handler, this); // Removes all hander functions, called 'test' with scope this</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>Name of the event to unbind.</p></td> </tr> <tr> <td>callback</td><td><a href="pc.callbacks.html#HandleEvent">pc.callbacks.HandleEvent</a></td><td><p>Function to be unbound.</p></td> </tr> <tr> <td>scope</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Scope that was used as the this when the event is fired.</p></td> </tr> </table> <h4>Returns</h4> <a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p> </div> <div id="on"> <h3 class="methodname">on(name, callback, [scope]) <a class="font-icon" href="#on"></a></h3> <p><p>Attach an event handler to an event.</p></p> <pre><code class="javascript">obj.on('test', function (a, b) { console.log(a + b); }); obj.fire('test', 1, 2); // prints 3 to the console</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>Name of the event to bind the callback to.</p></td> </tr> <tr> <td>callback</td><td><a href="pc.callbacks.html#HandleEvent">pc.callbacks.HandleEvent</a></td><td><p>Function that is called when event is fired. Note the callback is limited to 8 arguments.</p></td> </tr> <tr> <td>scope</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Object to use as 'this' when the event is fired, defaults to current this.</p></td> </tr> </table> <h4>Returns</h4> <a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p> </div> <div id="once"> <h3 class="methodname">once(name, callback, [scope]) <a class="font-icon" href="#once"></a></h3> <p><p>Attach an event handler to an event. This handler will be removed after being fired once.</p></p> <pre><code class="javascript">obj.once('test', function (a, b) { console.log(a + b); }); obj.fire('test', 1, 2); // prints 3 to the console obj.fire('test', 1, 2); // not going to get handled</code></pre> <h4>Parameters</h4> <table> <tr> <td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>Name of the event to bind the callback to.</p></td> </tr> <tr> <td>callback</td><td><a href="pc.callbacks.html#HandleEvent">pc.callbacks.HandleEvent</a></td><td><p>Function that is called when event is fired. Note the callback is limited to 8 arguments.</p></td> </tr> <tr> <td>scope</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Object to use as 'this' when the event is fired, defaults to current this.</p></td> </tr> </table> <h4>Returns</h4> <a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p> </div>  </main> </div> </body> </html>