How to customize layout header collapse icon?

Suite and Optimus Suite 7
#1

How to customize layout header collapse icon?

I would like to change the default collapse icon in the layout header, is it possible?

The headerIcon option just adds an icon on the opposite side.

image

#2

You may override the default icons using the css.
Like:

<style>
    .dxi.dxi-chevron-left:before {
        content: "\F114";
    }

    .dxi.dxi-chevron-down:before {
        content: "\F113";
    }

    .dxi.dxi-chevron-up:before {
        content: "\F116";
    }

    .dxi.dxi-chevron-right:before {
        content: "\F115";
    }
</style>

Just define the needed oicons in the “content” property