How can I make a specific row unselectable in a Vaadin Grid with a mult-selection model?

Question

I'm trying to disable the checkbox on a specific row based on some property of it's Bean (or just make the whole row generally unselectable), but I can't really see any method or property I could use to get a handle of the checkboxes on the left hand side added when using a multi-selection model or something as broad as disabling the whole row. Any thoughts on how this could be achieved, or where I should be looking?

Answer 1

You can use CSS to hide uncheckable rows. First set their styles using setRowStyleGenerator:

grid.setRowStyleGenerator(row -> {
    boolean uncheckable = (Boolean) 
        row.getItem().getItemProperty("uncheckable").getValue();
    return uncheckable ? "uncheckable-row" : "";
});

Then change styles in your .scss, they should look something like:

.v-grid-row.uncheckable-row td {
    background: #b1b9d6 none repeat scroll 0 0;
}

.v-grid-row.uncheckable-row td:first-child {
    visibility: hidden;
}

.v-grid-row.uncheckable-row.v-grid-row-selected > .v-grid-cell {
    background-image: none;
    border-color: #d4d4d4;
    color: inherit;
    text-shadow: inherit;
}

Here I hide the whole cell with checkbox (if hiding the content of td itself, user will still be available to select the row), use a different color for these rows and prevent them from being highlighted when "select all" checkbox is active. Surely, further styling is available. Since we only hide them from user, they still can be selected with grid.select() and located in grid.getSelectedRows() collection, you should filter them manually (by using some "uncheckable" property, as shown above).