how to add css to selected row in treegrid GXT 3

Question

I created a treegrid using GXT 3.now iwant to change background color of selected row and also i want to change the background of root node(leaf row i.e Parent row).

Answer 1

I think it is the same with GXT 2.x

Just add your own CellRenderer on your ColumnConfig :

List<ColumnConfig> columns = new ArrayList<ColumnConfig>();
ColumnConfig levelColumnConfig = new ColumnConfig("level", "Level", 50);
levelColumnConfig.setRenderer(getGridCellRenderer());
columns.add(levelColumnConfig);
ColumnModel cm = new ColumnModel(columns);



private GridCellRenderer<BeanModel> getGridCellRenderer() {
        if (gridCellRenderer == null) {
            gridCellRenderer = new GridCellRenderer<BeanModel>() {
                @Override
                public Object render(BeanModel model, String property, ColumnData config, int rowIndex, int colIndex,
                    ListStore<BeanModel> store, Grid<BeanModel> grid) {

                    //add some logic for example

                    String color = "#000000";
                    MyBean mybean = (MyBean) model.getBean();
                    switch (mybean.getLevel()) {
                    case TRACE:
                        color = "#f0f0f0";
                        break;
                    default:
                        color = "#000000";
                    }

                    // add some background-color

                    config.style = config.style + ";background-color:" + color + ";";
                    Object value = model.get(property);
                    return value;
                }
            };
        }
        return gridCellRenderer;
    }

Answer 2

I was also having the same problem, I wanted to color the background of a row depending on some condition. In the end, I found a solution:

You need to create a GridViewConfig and override the getColumnStyle method to return the color want, it took me a while to find out, but overriding the getRowStyle method doesn't do the trick, at least not for me.

grid.getView().setViewConfig(new GridViewConfig<Model>() {

    @Override
    public String getColStyle(  Model model, 
                                ValueProvider<? super Model, ?> valueProvider,
                                int rowIndex, int colIndex)
    {
        if ("Other2".equals(model.getName())){
            return "bold";
        }else if ("Other".equals(model.getName())){
            return "red-row";
        }
        return null;
    }

    @Override
    public String getRowStyle(Model model, int rowIndex) {
        return null;
    }
});

Note: Modify CSS file accordingly.

Answer 3

I found out that you also can adjust CSS like this:

grid.getCellFormatter().addStyleName(0, colNo - 1, MC_GWT.MC_STYLE_VERTICAL_ICON_HOLDER);

It's a little easier i think :) Especially when you want to style the , f.e. alignment of icons inside of it. In my case i needed to display icons in a vertical row. So i needed to change the Cells display to 'block';