/**
* When a layer selection event comes in, the LayerTree must also select the correct node in the
* tree, update the selected layer text, and update all buttons icons.
*
* @since 1.6.0
*/
@Api
public void onSelectLayer(LayerSelectedEvent event) {
for (TreeNode node : tree.getAllNodes()) {
if (node.getName().equals(event.getLayer().getLabel())) {
selectedLayerTreeNode = (LayerTreeTreeNode) node;
treeGrid.selectRecord(selectedLayerTreeNode);
htmlSelectedLayer.setContents(
I18nProvider.getLayerTree().activeLayer(selectedLayerTreeNode.getLayer().getLabel()));
Canvas[] toolStripMembers = toolStrip.getMembers();
updateButtonIconsAndStates(toolStripMembers);
}
}
}
/**
* Causes the node to check its status (visible, showing labels,...) and to update its icon to
* match its status.
*/
public void updateIcon() {
if (getLayer().isShowing()) {
if (getLayer().isLabelsShowing()) {
// show icon labeled and showing
setIcon(WidgetLayout.iconLayerShowLabeled);
} else {
// show showing icon
setIcon(WidgetLayout.iconLayerShow);
}
} else {
// show not showing
setIcon(WidgetLayout.iconLayerHide);
}
tree.refreshIcons();
}
/**
* Builds up the tree showing the layers
*
* @param mapModel The mapModel containing the layerTree
*/
private void buildTree(MapModel mapModel) {
treeGrid.setWidth100();
treeGrid.setHeight100();
treeGrid.setShowHeader(false);
tree = new RefreshableTree();
final TreeNode nodeRoot = new TreeNode("ROOT");
tree.setRoot(nodeRoot); // invisible ROOT node (ROOT node is required)
ClientLayerTreeInfo layerTreeInfo = mapModel.getMapInfo().getLayerTree();
if (layerTreeInfo != null) {
ClientLayerTreeNodeInfo treeNode = layerTreeInfo.getTreeNode();
processNode(treeNode, nodeRoot, tree, mapModel, false);
}
treeGrid.setData(tree);
treeGrid.addLeafClickHandler(this);
treeGrid.addFolderClickHandler(this);
// -- add event listeners to layers
for (Layer<?> layer : mapModel.getLayers()) {
registrations.add(
layer.addLayerChangedHandler(
new LayerChangedHandler() {
public void onLabelChange(LayerLabeledEvent event) {}
public void onVisibleChange(LayerShownEvent event) {
for (TreeNode node : tree.getAllNodes()) {
if (node.getName().equals(event.getLayer().getLabel())) {
if (node instanceof LayerTreeTreeNode) {
((LayerTreeTreeNode) node).updateIcon();
}
}
}
}
}));
}
}