How to color a grid row conditionally in Vaadin 8?

Hiran Perera :

I want to change the color of a Vaadin grid row based on a value of a cell. I tried it as follows and did not work.

SCSS

@import "mytheme.scss";
@import "addons.scss";

// This file prefixes all rules with the theme name to avoid causing conflicts with other themes.
// The actual styles should be defined in mytheme.scss

.mytheme {
     @include addons;
     @include mytheme;

     .v-grid-row.error_row {
            // Tried following elements and didn't work.
            // background-color: red !important;
            // color: blue !important; // This changed the color of the font.
            background: green !important;
     }
}

Java Code

grid.setStyleGenerator(t -> {
            if (t.getLogLevel().trim().equals(ERROR) || t.getLogLevel().trim().equals(WARN)) {
                return "error_row";
            } else {
                return null;
            }
        });

Note: I check the css from the browser's developer tools and that shows the css is updated properly (See the below image).

Steffen Harbich :

You need to overwrite the background-color of the row's TD element:

.v-grid-row.error_row > td {
    background-color: red;
}

By using your browser's style inspection you can see how Vaadin has implemented styles.

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