How can I put a tooltip on a specific grid cell in GXT on mouse over?
I can put a tooltip for the whole grid, but did not find a way to put for a specific grid cell.
More specific, how can I retrieve the informations from the grid cell and when the cursor is over the cell, to display some informations from the cell in a tooltip.
I think the simplest way is to use QuickTip class. This one listens mouseover on some container and shows tip for each children DOM element with qtip attribute presence. Example:
public class GxtToolTipInGxtGrid implements EntryPoint {
public static class Model {
private final String name;
public Model(String name) {
this.name = name;
}
public String getName() {
return name;
}
}
interface ModelProperties extends PropertyAccess<Model> {
ValueProvider<Model, String> name();
}
private static List<Model> MODELS = Arrays.asList(new Model("John"), new Model("Mary"));
private static ModelProperties PROPERTIES = GWT.create(ModelProperties.class);
public void onModuleLoad() {
ListStore<Model> store = new ListStore<>(Model::getName);
store.addAll(MODELS);
List<ColumnConfig<Model, ?>> columns = new ArrayList<>();
ColumnConfig<Model, Model> column = new ColumnConfig<>(new IdentityValueProvider<>(), 200, "Name with tooltip");
column.setCell(new SimpleSafeHtmlCell<>(new AbstractSafeHtmlRenderer<Model>() {
@Override
public SafeHtml render(Model object) {
SafeHtmlBuilder sb = new SafeHtmlBuilder();
//QuickTip will use this attribute (qtip) for showing the tip.
sb.appendHtmlConstant("<div qtip='" + object.getName() + "'>");
sb.appendEscaped(object.getName());
sb.appendHtmlConstant("</div>");
return sb.toSafeHtml();
}
}));
columns.add(column);
columns.add(new ColumnConfig<>(PROPERTIES.name(), 100, "Name w/o tooltip"));
Grid<Model> grid = new Grid<>(store, new ColumnModel<>(columns));
RootPanel.get().add(grid);
//Attach QuickTip to grid
Scheduler.get().scheduleDeferred(() -> new QuickTip(grid));
}
}
But this is a static approach. I mean, decision to show tooltip and what to show in tooltip has made on rendering phase. However, if you need a dynamic approach, then custom implemenation of the QuickTip analogue might be done.
Also, look at Ext GWT (GXT) tooltip over a grid row . It may contains another solutions.
new QuickTip(myGrid)
Override the render function of that cell to have a tooltip.
public void render(Context context, ImageResource value, SafeHtmlBuilder sb){ sb.appendHtmlConstant("<div qtip='TOOLTIPVALUE'>"); super.render(context, value, sb); sb.appendHtmlConstant("</div>"); }
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