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https://github.com/brrd/electron-tabs

Tab component for Electron
https://github.com/brrd/electron-tabs

electron tab tabs typescript webcomponent webview

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Tab component for Electron

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README 

        
# electron-tabs is discontinued



Thank you for your support and contributions all these years.



---



# electron-tabs



> Simple tabs for Electron applications



![Electron Tab Demo](image.jpg)



## Features



* :electron: Compatible with Electron ≥ 17.

* :lock: Compliant with [Electron security recommendations](https://www.electronjs.org/docs/latest/tutorial/security) (works without `nodeIntegration: true`).

* :toolbox: Written with TypeScript and Web Components.

* :hand: Supports drag and drop out of the box.

* :art: Easily customizable.



## Installation



```bash

npm install --save electron-tabs

```



## Getting started



Define the following `webPreferences` options in the main process:



```js

const mainWindow = new electron.BrowserWindow({

  webPreferences: {

    webviewTag: true

  }

});

```



Then add the following markup where you want the tabs to display:



```html



```



## Options



You can add options by setting `` element attributes:



```html



```



The following attributes are supported:



* `close-button-text` (string): text of the tabs "Close" button.

* `new-tab-button` (boolean): set it to true to display the "New Tab" button.

* `new-tab-button-text` (string): text of the "New Tab" button.

* `sortable` (boolean): set it to true to make the tabs sortable by drag and drop.

* `visibility-threshold` (number): the minimum number of tabs necessary for the tab bar to be displayed. 0 (default) means that it will always remain visible.



## Methods



Use `TabGroup` methods and manipulate tabs in a script after calling `electron-tabs.js`.



```html



  // Select tab-group

  const tabGroup = document.querySelector("tab-group");



  // Setup the default tab which is created when the "New Tab" button is clicked

  tabGroup.setDefaultTab({

    title: "New Page",

    src: "path/to/new-page.html",

    active: true

  });



  // Do stuff

  const tab = tabGroup.addTab({

    title: "electron-tabs on NPM",

    src: "https://www.npmjs.com/package/electron-tabs"

  });

  const pos = tab.getPosition();

  console.log("Tab position is " + pos);



```



### TabGroup



#### `tabGroup.addTab(options)`



Add a new tab and returns the related `Tab` instance.



* `title`: tab title.

* `src`: URL to the page which will be loaded into the view. This is actually the same than `options.webview.src`.

* `badge`: optional text to put into a badge, badge will be hidden if false.

* `iconURL`: optional URL to the tab icon.

* `icon`: optional code for a tab icon. Can be used with symbol libraries (example with Font Awesome: `icon: 'fa fa-icon-name'`). This attribute is ignored if an `iconURL` was given.

* `closable` (default: `true`): if set to `true` the close button won't be displayed and the user won't be able to close the tab. See also `tab.close()`.

* `visible` (default: `true`): set this to `false` if you don't want to display the tab once it is loaded. If set to `false` then you will need to call `tab.show()` to display the tab.

* `active` (default: `false`): set this to `true` if you want to activate the tab once it is loaded. Otherwise you will need to call `tab.activate()`.

* `ready`: a callback function to call once the tab is ready. The `Tab` instance is passed as the only parameter.

* `webviewAttributes`: attributes to add to the webview tag. See [webview documentation](http://electron.atom.io/docs/api/web-view-tag/#tag-attributes).



#### `tabGroup.setDefaultTab(options)`



Define default options to use for creating the tab when the "New Tab" button is clicked or when calling `tabGroup.addTab()` with no parameter.



```javascript

tabGroup.setDefaultTab({

  title: "New Page",

  src: "path/to/new-page.html",

  active: true

});

```



#### `tabGroup.getTab(id)`



Retrieve an instance of `Tab` from this `id` (return `null` if not found).



#### `tabGroup.getTabByPosition(position)`



Retrieve an instance of `Tab` from this `position` (return `null` if not found). A negative value is an offset from the right.



To get the tab in the leftmost position:



```javascript

tabGroup.getTabByPosition(1);

```



To get the tab in the rightmost position:



```javascript

tabGroup.getTabByPosition(-1);

```



#### `tabGroup.getTabByRelPosition(position)`



Retrieve an instance of `Tab` from this `position` relative to the active tab (return `null` if not found).



`tabGroup.getNextTab()` is an alias to `tabGroup.getTabByRelPosition(1)`.



`tabGroup.getPreviousTab()` is an alias to `tabGroup.getTabByRelPosition(-1)`.



#### `tabGroup.getActiveTab()`



Return the active tab (return `null` if none).



#### `tabGroup.getTabs()`



Return all registered tabs.



#### `tabGroup.eachTab(fn, thisArg)`



Loop through the list of tabs in `tabGroup` and execute the `fn` function for each tab. `fn` is called with the following parameters:



* `currentTab`: the current tab object.

* `index`: the index of the current tab being processed.

* `tabs`: the full array of tabs (similar to `tabGroup.getTabs()`).



`thisArg` (optional) is the value to use as `this` when executing `fn`.



### Tab



Instances of `Tab` are returned by the `tabGroup.addTab()` method.



#### `tab.setTitle(title)`



Set tab title.



#### `tab.getTitle()`



Get current tab title.



#### `tab.setBadge(badge)`



Set tab badge.



#### `tab.getBadge()`



Get current tab badge.



#### `tab.setIcon (iconURL, icon)`



Set tab icon (a iconURL or an icon must be given).



#### `tab.getIcon()`



Get current tab icon URL / icon.



#### `tab.setPosition(newPosition)`



Move tab to the specified position. See [`tabGroup.getTabByPosition`](#tabgroupgettabbypositionposition) for information about positions.



#### `tab.getPosition(fromRight)`



Get the tab position. If `fromRight` is true the index returned is negative and is the offset from the right.



#### `tab.activate()`



Activate this tab. The class "active" is added to the active tab.



#### `tab.show(flag)`



Toggle the "visible" class on the tab. `tab.hide()` is an alias to `tab.show(false)`.



#### `tab.hasClass(classname)`



Return `true` if the tab element has the specified classname. Useful for checking if a tab is "active" or "visible".



#### `tab.close(force)`



Close the tab (and activate another tab if relevant). When `force` is set to `true` the tab will be closed even if it is not `closable`.



## Events



The following events are emitted:



* `tabGroup.on("tab-added", (tab, tabGroup) => { ... });`

* `tabGroup.on("tab-removed", (tab, tabGroup) => { ... });`

* `tabGroup.on("tab-active", (tab, tabGroup) => { ... });`

* `tab.on("webview-ready", (tab) => { ... });`

* `tab.on("webview-dom-ready", (tab) => { ... });`

* `tab.on("title-changed", (title, tab) => { ... });`

* `tab.on("badge-changed", (badge, tab) => { ... });`

* `tab.on("icon-changed", (icon, tab) => { ... });`

* `tab.on("active", (tab) => { ... });`

* `tab.on("inactive", (tab) => { ... });`

* `tab.on("visible", (tab) => { ... });`

* `tab.on("hidden", (tab) => { ... });`

* `tab.on("close", (tab) => { ... });`

* `tab.on("closing", (tab, abort) => { ... });` (Use `abort()` function to cancel closing)



You can also use `tab.once` to automatically remove the listener when invoked:



* `tab.once("webview-ready", (tab) => { ... });`

* `tab.once("webview-dom-ready", (tab) => { ... });`



## Access Electron webview element



You can access the webview element and use its methods with through the `Tab.webview` attribute. See [webview documentation](https://electronjs.org/docs/api/webview-tag#methods).



```javascript

let webview = tab.webview;

webview.loadURL("file://path/to/new/page.html");

```



## Custom styles



To customize tab-group styles, set new values to [electron-tabs CSS variables](https://github.com/brrd/electron-tabs/blob/master/src/style.css) in your application stylesheet.



Since `TabGroup` is a Web Component you won't be able to change its styles directly from your app stylesheet. If you need more control over it then you can add a `` tag inside the `<tab-group >` element:



```html

<tab-group new-tab-button="true" sortable="true">

  <style>

    /* Write your own CSS rules here... */

  



```



This method is particularly useful when you need to define custom badges or tab styles:



```html



  

    /* Add custom styles */

    .my-badge {

      background-color: orange;

    }

    .my-custom-tab {

      color: red;

      font-weight: bold;

    }

  



  const tabGroup = document.querySelector("tab-group");



  tabGroup.addTab({

    title: "Tab with custom badge",

    src: "page.html",

    badge: {

      text: "5",

      classname: "my-badge"

    }

  });



  tabGroup.addTab({

    title: "Tab with custom style",

    src: "page.html",

    ready: function(tab) {

      tab.element.classList.add("my-custom-tab");

    }

  });



```



## Development



`electron-tabs` uses TypeScript and Parcel under the hood.



### Requirements



Git and Node 12+.



### Build



```bash

# Clone this repo

git clone [email protected]:brrd/electron-tabs.git

cd electron-tabs



# Install dependencies

npm install



# Build

npm run build



# ...or watch

npm run watch

```



### Demo



```bash

npm run demo

```



## License



The MIT License (MIT) - Copyright (c) 2022 Thomas Brouard