See demo here
npm install ember-collapsible-layout --save-dev
In your template:
{{#collapsible-layout as |layout|}}
{{#collapsible-panel
layout=layout
config=centerPanel
}}
Center panel content here
{{/collapsible-panel}}
{{#collapsible-panel
layout=layout
config=leftPanel
}}
Left panel content here
{{/collapsible-panel}}
{{/collapsible-layout}}
In the controller:
export default Ember.Controller.extend({
leftPanel: {
region: "left", // required field
width: 300,
resizeable: true
},
centerPanel: { // center panel is only required panel
region: "center"
}
});