Dynamic Tabbar

Tabbar can take the following modifications:

Tabbar may have non-static tab width and quantity that are both changed dynamically on window resizing;
Tabs can be pushed to a related popup while retaining their default behavior.

Everything is done fully automatically - when window size changes, tabs are minimized and then pushed to a popup. So following code is enough:

Default tabbar

{ view:"tabbar", options:["First tab", "Second Tab"] }

Customization

The minimal width of each tab is 100px by default. It is common for all the tabs of this tabbar and can be changed with the help of tabMinWidth property;
The minimal width of an area to the right that triggers a popup is 40px. By default an ellipsis icon is used. Both parameters can be changed:
- tabMoreWidth sets the width of this area;
- moreTemplate sets other icon/text/HTML of this area. Either function or string can be used;
The width of the popup is 200px by default. It can be changed with the popupWidth property;
The default number of list items in the popup is 7. It can be changed with the yCount parameter. If there are more items in the popup, scroll will appear.
By default list items feature #value# template. Other template can be set by popupTemplate property.

Customized tabbar

{ 
    view:"tabbar", 
    tabMinWidth:150, 
    tabMoreWidth:80,
    moreTemplate:"Show more", 
    //or moreTemplate:function(){ return "Show more" },
    popupWidth:250,
    popupTemplate:"#text#",
    yCount:10,
    options:[
        {id:1, value:"First Tab", text:"Some text for first tab"},
        {id:2, value:"Second Tab", text:"Some text for second tab"}
        ...
    ] 
}

Note that options config for tabbar must include the value property, otherwise it will render id on tabs and throw an error. Still, there can be other properties rendered in a popup list with popupTemplate.

More info about Webix data templates can be found in the dedicated documentation article.