Panel / Side Panels

Panel / Side Panels

Panel Layout

Let’s look how to add Side Panels to our App. We may include up to 2 panels to our App, one on left side and another one on right side. We should add panels’ HTML right in the beginning of the app root element (or in case there is no root element in use):

<body>
  <!-- App root element -->
  <div id="app">
    <!-- Left panel -->
    <div class="panel panel-left">
        ... panel content goes here ...
    </div>
    <!-- Right panel -->
    <div class="panel panel-right">
        ... panel content goes here ...
    </div>
    ...
  </div>
</body>

Panel Effect

After we added panels we need to choose opening effect for each panel. There could be one of two effects: “Reveal” (when panel moves out whole app’s content) or “Cover” (when panel overlays app’s content). If you want to use “Reveal” effect you should add additional **panel-reveal** class to Panel, or **panel-cover** for cover effect:

<body>
  <!-- App root element -->
  <div id="app">
    <!-- Left panel, let it be with reveal effect -->
    <div class="panel panel-left panel-reveal">
        ... panel content goes here ...
    </div>
    <!-- Right panel, with cover effect -->
    <div class="panel panel-right panel-cover">
        ... panel content goes here ...
    </div>
    ...
  </div>
</body>

Resizable Panel

Each Panel can be resizable. To make Panel resizable we just need to add panel-resizable class to Panel element:

<body>
  <!-- App root element -->
  <div id="app">
    <!-- Make left panel resizable -->
    <div class="panel panel-left panel-resizable">
        ... panel content goes here ...
    </div>
    <!-- Make right panel resizable -->
    <div class="panel panel-right panel-resizable">
        ... panel content goes here ...
    </div>
    ...
  </div>
</body>

Panel App Parameters

It is possible to control some default panels behavior using global app parameters by passing panels related parameters under panel parameter:

Parameter	Type	Default	Description
leftBreakpoint	number		Minimal app width (in px) when left panel becomes always visible
rightBreakpoint	number		Minimal app width (in px) when right panel becomes always visible
swipe	string		Disabled by default. If you want to enable ability to open/close side panels with swipe you can pass here `left` (for left panel) or `right` (for right panel) or `both` (for both panels).
swipeActiveArea	number	0	Width (in px) of invisible edge from the screen that triggers swipe panel
swipeCloseOpposite	boolean	true	This parameter gives ability to close opposite panel by swipe. For example, if your swipePanel is “left”, then you could close “right” panel also with swipe.
swipeOnlyClose	boolean	false	This parameter allows to close (but not open) panels with swipes
swipeNoFollow	boolean	false	Fallback option for potentially better performance on old/slow devices. If you enable it, then side panel will not follow your finger during touch, it will be automatically opened/closed on swipe left/right.
swipeThreshold	number	0	Panel will not move with swipe if “touch distance” will be less than this value (in px).
closeByBackdropClick	boolean	true	Enable/disable ability to close panel by clicking outside of panel (on panel’s backdrop)

For example:

var app = new Framework7({
  panel: {
    swipe: 'left',
    leftBreakpoint: 768,
    rightBreakpoint: 1440,
  }
});

Panel App Methods

Let’s look at related App methods to work with Panel:

app.panel.open(side, animate)- open panel

side - string. Panel to open: “left” or “right”. Required in case you have two panels.
animate - boolean. Should it be opened with animation or not. Optional, by default is true

app.panel.close(side, animate)- close panel

side - string. Panel to close. Optional, by default will close any opened panel.
animate - boolean. Should it be closed with animation or not. Optional, by default is true

app.panel.toggle(side, animate)- toggle panel

side - string. Panel to toggle. Optional, by default will toggle any opened panel.
animate - boolean. Should it be opened/closed with animation or not. Optional, by default is true

app.panel.create(parameters)- create new panel instance

parameters - object. Object with panel parameters.

Method returns created Panel instance

Use this method only in case you have added panel to DOM after app initialization. Otherwise it will be created automatically

app.panel.get(side)- get Panel instance by specified side

side - string. Panel to get

Method returns Panel instance

app.panel.enableSwipe(side)- enable swipes for panel (swipe-to-close and swipe-to-open)

side - string. Panel to enable swipe actions on

app.panel.disableSwipe(side)- disable swipes for panel (swipe-to-close and swipe-to-open)

side - string. Panel to disable swipe actions on

app.panel.enableResizable(side)- makes specified panel resizable

side - string. Side of the panel that needs to be resizable

app.panel.disableResizable(side)- disable resizable panel

side - string. Side of the panel to disable resizing

app.panel.left- left panel instance

app.panel.right- right panel instance

Panel Parameters

If we create Panel manually using app.panel.create method we need to pass object with panel parameters:

Parameter	Type	Description
el	HTMLElement	Panel element
side	string	Can be `left` or `right`. If not passed then will be determined based on `panel-left` or `panel-right` element classes
effect	string	Can be `cover` or `reveal`. If not passed then will be determined based on `panel-cover` or `panel-reveal` element classes
resizable	boolean	If not passed then will be determined based on `panel-resizable` class

For example:

var panel = app.panel.create({
  el: '.panel-left',
})

Panel Methods & Properties

After we created Panel instance (by calling app.panel.create) or after we got Panel instance (by calling app.panel.get) we may use its useful methods and properties:

Properties
panel.app	Link to global app instance
panel.side	String with panel side: `left` or `right`
panel.effect	String with panel effect: `cover` or `reveal`
panel.opened	Boolean property indicating whether it is opened or not
panel.el	Panel HTML element
panel.$el	Dom7 instance with panel HTML element
panel.backdropEl	Backdrop HTML element
panel.$backdropEl	Dom7 instance with backdrop HTML element
panel.params	Popup parameters
Methods
panel.open(animate)	Open panel. Where animate - boolean (by default `true`) - defines whether it should be opened with animation or not
panel.close(animate)	Close panel. Where animate - boolean (by default `true`) - defines whether it should be closed with animation or not
panel.toggle(animate)	Toggle panel. Where animate - boolean (by default `true`) - defines whether it should be closed with animation or not
panel.destroy()	Destroy panel instance
panel.on(event, handler)	Add event handler
panel.once(event, handler)	Add event handler that will be removed after it was fired
panel.off(event, handler)	Remove event handler
panel.off(event)	Remove all handlers for specified event
panel.emit(event, …args)	Fire event on instance

Control Panel With Links

It is possible to open and close required panel (if you have them in DOM) using special classes and data attributes on links:

To open panel we need to add **panel-open** class to any HTML element (prefered to link)
To close panel we need to add **panel-close** class to any HTML element (prefered to link)
To toggle panel we need to add **panel-toggle** class to any HTML element (prefered to link)
If you want to specify which panel should opened/closed, then it could be done via additional **data-panel="left** attribute on this HTML element

According to above note:

<body>
  <div id="app">
    <!-- Left Panel with Reveal effect -->
    <div class="panel panel-left panel-reveal">
      <div class="content-block">
        ...
        <!-- Clicking on link with "panel-close" class will close panel -->
        <p><a href="#" class="panel-close">Close me</a></p>
        <!-- Click on link with "panel-open" and data-panel="right" attribute will open Right panel -->
        <p><a href="#" data-panel="right" class="panel-close">Open Right Panel</a></p>
      </div>
    </div>
    <!-- Right Panel with Cover effect -->
    <div class="panel panel-right panel-cover">
      <div class="content-block">
        ...
        <!-- Click on link with "panel-close" class will close panel -->
        <p><a href="#" class="panel-close">Close me</a></p>
        <!-- Click on link with "panel-open" and data-panel="left" attribute will open Left panel -->
        <p><a href="#" data-panel="left" class="panel-open">Open Left Panel</a></p>
      </div>
    </div>
    ...
    <div class="page-content">
      <div class="content-block">
        <!-- If no data-panel attribute, Left panel will be opened by default -->
        <p><a href="#" class="panel-open">Open Left Panel</a></p>
        <!-- Click on link with "panel-open" and data-panel="right" attribute will open Right panel -->
        <p><a href="#" data-panel="right" class="panel-open">Open Right Panel</a></p>
      </div>
    </div>
  </div>
  ...
</body>

Routable Panels

Routable Panels available from Framework7 version 3.2.0.

Panels can also be routable with same features as for routable modals and pages:

it provides opportunity to open Panel by usual links instead of so called special links or API,
with enabled Push State, the same Panel will be opened when you refresh browser, navigate back and forward in history,
with routable Panels you can load Panel itself and its content in the same ways as for pages and modals, i.e. using url, content, template, templateUrl, component or componentUrl

routes = [
  ...
  // Creates Panel from passed HTML string
  {
    path: '/left-panel/',
    panel: {
      content: `
        <div class="panel panel-left panel-cover">
          <div class="view">
            <div class="page">
              ...
            </div>
          </div>
        </div>
      `
    }
  },
  // Load Panel from file via Ajax
  {
    path: '/right-panel-ajax/',
    panel: {
      url: './right-panel.html',
      /* right-panel.html contains:
      <div class="panel panel-right panel-reveal">
        <div class="view">
          <div class="page">
            ...
          </div>
        </div>
      </div>
      */
    },
  },
  // Load Panel from component file
  {
    path: '/panel-component/',
    panel: {
      componentUrl: './panel-component.html',
      /* panel-component.html contains:
      <template>
        <div class="panel panel-left panel-cover">
          <div class="view">
            <div class="page">
              ...
            </div>
          </div>
        </div>
      </template>
      <style>...</style>
      <script>...</script>
      */
    },
  },
]

According to example above:

when you click on link with /left-panel/ href attribute it will open Panel from specified string content,
when you click on link with /right-panel-ajax/ href attribute it will perform Ajax request to right-panel.html file and open it as a Right Panel,
when you click on link with /panel-component/ href attribute it will perform Ajax request to panel-component.html file, parse it as a Router Component and open it as a Panel,

Note that routable Panels can’t be mixed with static Panels. So if you have static left panel in the app, then only right panel can be loaded as routable panel.

Panel Events

Panel will fire the following DOM events on panel element and events on app and panel instance:

DOM Events

Event	Target	Description
panel:open	Panel Element<div class=”panel”>	Event will be triggered when Panel starts its opening animation
panel:opened	Panel Element<div class=”panel”>	Event will be triggered after Panel completes its opening animation
panel:close	Panel Element<div class=”panel”>	Event will be triggered when Panel starts its closing animation
panel:closed	Panel Element<div class=”panel”>	Event will be triggered after Panel completes its closing animation
panel:backdrop-click	Panel Overlay Element<div class=”panel-backdrop”>	Event will be triggered when the panel overlay is clicked
panel:swipeopen	Panel Element<div class=”panel”>	Event will be triggered in the very beginning of opening it with swipe
panel:swipe	Panel Element<div class=”panel”>	Event will be triggered for swipe panel during touch swipe action
panel:breakpoint	Panel Element<div class=”panel”>	Event will be triggered when it becomes visible/hidden when app width matches its breakpoint
panel:resize	Panel Element<div class=”panel”>	Event will be triggered on resizable panel resize
panel:beforedestroy	Panel Element<div class=”panel”>	Event will be triggered right before Panel instance will be destroyed

App and Panel Instance Events

Panel instance emits events on both self instance and app instance. App instance events has same names prefixed with panel.

Event	Target	Arguments	Description
open	panel	(panel)	Event will be triggered when Panel starts its opening animation. As an argument event handler receives panel instance
panelOpen	app	(panel)
opened	panel	(panel)	Event will be triggered when Panel completes its opening animation. As an argument event handler receives panel instance
panelOpened	app	(panel)
close	panel	(panel)	Event will be triggered when Panel starts its closing animation. As an argument event handler receives panel instance
panelClose	app	(panel)
closed	panel	(panel)	Event will be triggered when Panel completes its closing animation. As an argument event handler receives panel instance
panelClosed	app	(panel)
backdropClick	panel	(panel)	Event will be triggered when the panel backdrop is clicked. As an argument event handler receives panel instance
panelBackdropClick	app	(panel)
swipeOpen	panel	(panel)	Event will be triggered in the very beginning of opening it with swipe. As an argument event handler receives panel instance
panelSwipeOpen	app	(panel)
swipe	panel	(panel, progress)	Event will be triggered for swipe panel during touch swipe action. As an argument event handler receives panel instance and opened progress (from 0 to 1)
panelSwipe	app	(panel, progress)
breakpoint	panel	(panel)	Event will be triggered when it becomes visible/hidden when app width matches its breakpoint. As an argument event handler receives panel instance
panelBreakpoint	app	(panel)
resize	panel	(panel, newPanelWidth)	Event will be triggered on resizable panel resize
panelResize	app	(panel)	Event will be triggered on resizable panel resize
beforeDestroy	panel	(panel)	Event will be triggered right before Panel instance will be destroyed
panelBeforeDestroy	app	(panel)

CSS Variables

Below is the list of related CSS variables (CSS custom properties).

Note that commented variables are not specified by default and their values is what they fallback to in this case.

:root {
  --f7-panel-width: 260px;
  /*
  --f7-panel-left-width: var(--f7-panel-width);
  --f7-panel-right-width: var(--f7-panel-width);
  */
  --f7-panel-bg-color: #fff;
}
.ios {
  --f7-panel-backdrop-bg-color: rgba(0, 0, 0, 0);
  --f7-panel-transition-duration: 400ms;
  --f7-panel-shadow: transparent;
}
.md {
  --f7-panel-backdrop-bg-color: rgba(0, 0, 0, 0.2);
  --f7-panel-transition-duration: 300ms;
  --f7-panel-shadow: rgba(0, 0, 0, 0.25) 0%,
    rgba(0, 0, 0, 0.1) 30%,
    rgba(0, 0, 0, 0.05) 40%,
    rgba(0, 0, 0, 0) 60%,
    rgba(0, 0, 0, 0) 100%;
}
.aurora {
  --f7-panel-backdrop-bg-color: rgba(0, 0, 0, 0.2);
  --f7-panel-transition-duration: 400ms;
  --f7-panel-shadow: transparent;
}

Examples

<body>
  <div id="app">
    <div class="panel panel-left panel-reveal panel-resizable">
      <div class="block">
        <p>Left Panel content here</p>
        <p><a class="panel-close" href="#">Close me</a></p>
        <p><a class="panel-open" href="#" data-panel="right">Open Right Panel</a></p>
      </div>
    </div>
    <div class="panel panel-right panel-cover panel-resizable">
      <div class="block">
        <p>Right Panel content here</p>
        <p><a class="panel-close" href="#">Close me</a></p>
        <p><a class="panel-open" href="#" data-panel="left">Open Left Panel</a></p>
      </div>
    </div>
    <div class="view view-main view-init">
      <div class="page">
        <div class="navbar">
          <div class="navbar-inner">
            <div class="left"></div>
            <div class="title">Panels</div>
            <div class="right"></div>
          </div>
        </div>
        <div class="page-content">
          <div class="block">
            <p><a class="panel-open" href="#">Open Left Panel</a></p>
            <p><a class="panel-open" href="#" data-panel="right">Open Right Panel</a></p>
          </div>
        </div>
      </div>
    </div>
  </div>
</body>

/* Limit resizable panel width */
.panel {
  min-width: 100px;
  max-width: 90vw;
}

var app = new Framework7();
var $$ = Dom7;
// Dom Events
$$('.panel-left').on('panel:open', function () {
  console.log('Panel left: open');
});
$$('.panel-left').on('panel:opened', function () {
  console.log('Panel left: opened');
});
// Instance Events
var panelRight = app.panel.right;
panelRight.on('open', function () {
  console.log('Panel right: open');
});
panelRight.on('opened', function () {
  console.log('Panel right: opened');
});
// App Events
app.on('panelClose', function (panel) {
  console.log('Panel ' + panel.side + ': close');
});
app.on('panelClosed', function (panel) {
  console.log('Panel ' + panel.side + ': closed');
});
app.on('panelResize', function (panel, newPanelWidth) {
  console.log('Panel resized to ' + newPanelWidth + 'px');
});