public void update() {
LayerTreeTreeNode selected = tree.getSelectedLayerTreeNode();
if (selected != null && action.isEnabled(selected.getLayer())) {
setDisabled(false);
setIcon(action.getIcon());
setTooltip(action.getTooltip());
} else {
setDisabled(true);
setIcon(action.getDisabledIcon());
setTooltip("");
}
}
public LayerTreeButton(final LayerTree tree, final LayerTreeAction action) {
this.tree = tree;
this.action = action;
setWidth(WidgetLayout.layerTreeButtonSize);
setHeight(WidgetLayout.layerTreeButtonSize);
setIconSize(WidgetLayout.layerTreeButtonSize - WidgetLayout.layerTreeStripHeight);
setIcon(action.getIcon());
setTooltip(action.getTooltip());
setActionType(SelectionType.BUTTON);
setShowDisabledIcon(false);
addClickHandler(
new ClickHandler() {
public void onClick(ClickEvent event) {
try {
action.onClick(tree.getSelectedLayerTreeNode().getLayer());
update();
} catch (Throwable t) {
Log.logError("LayerTreeButton onClick error", t);
}
}
});
}