我在排序JFXTreeTableView
(来自Jfoenix)时遇到了麻烦
我创建了一个名为ScanModel的对象,它扩展了Jfoenix的RecursiveTreeObject<ScanModel>
。
我在那里拥有的众多物业之一是:
private IntegerProperty id;
这是它的吸气剂和制定者
public final IntegerProperty idProperty() {
if (id == null) {
id = new SimpleIntegerProperty();
}
return id;
}
public final int getId() {
return idProperty().get();
}
public void setId(int value) {
idProperty().set(value);
}
两个类扩展了抽象的ScanModel类:StudyModel和SeriesModel
StudyModel(包含多个SeriesModel)覆盖Jfoenix RecursiveTreeObject的getChildren()
方法,并返回其系列可观察列表。
以下是我如何将包含项目的observable列表绑定到表本身:
protected void createTree(JFXTreeTableView<ScanModel> tree, ObservableList<ScanModel> elements) {
tree.setRoot(new RecursiveTreeItem<ScanModel>(elements, RecursiveTreeObject::getChildren));
tree.setShowRoot(false);
tree.getSelectionModel().clearSelection();
}
到目前为止,一切都运行良好,我已将新的ScanModel项添加到可观察列表中,并且它已在UI中自动显示。
现在我的问题:
客户端请求排序表:Descending StudyModels和Ascending SeriesModels。
首次尝试时,我只尝试对StudyModels进行排序 我已将createTree方法更改为此实现:
protected void createTree(JFXTreeTableView<ScanModel> tree, ObservableList<ScanModel> elements) {
SortedList<ScanModel> sortedElements = elements.sorted((l, r) -> Integer.compare(l.getId(), r.getId()));
tree.setRoot(new RecursiveTreeItem<ScanModel>(sortedElements, RecursiveTreeObject::getChildren));
tree.setShowRoot(false);
tree.getSelectionModel().clearSelection();
}
我在这里想念的是什么? 感谢。
更新
以防万一,这是表格的fxml
<JFXTreeTableView fx:id="_treeTableView">
<placeholder>
<Label text="No Normal Studies to display" />
</placeholder>
<columnResizePolicy>
<JFXTreeTableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
</columnResizePolicy>
<columns>
<JFXTreeTableColumn text="ID" sortable="false"
minWidth="150" maxWidth="150">
<cellValueFactory>
<TreeTableErrorIndicationCellFactory value="id" />
</cellValueFactory>
</JFXTreeTableColumn>
<JFXTreeTableColumn text="Scan Time" sortable="false"
minWidth="140" maxWidth="140">
<cellValueFactory>
<TreeTableErrorIndicationCellFactory value="formattedScanTime" />
</cellValueFactory>
</JFXTreeTableColumn>
<JFXTreeTableColumn text="Selected" sortable="false"
minWidth="60" maxWidth="60">
<cellValueFactory>
<ScanSelectedValueFactory />
</cellValueFactory>
</JFXTreeTableColumn>
<JFXTreeTableColumn sortable="false">
</JFXTreeTableColumn>
<JFXTreeTableColumn text="Archived" sortable="false"
style="-fx-alignment: CENTER-RIGHT;" minWidth="60" maxWidth="60">
<cellValueFactory>
<IsArchivedCellFactory />
</cellValueFactory>
</JFXTreeTableColumn>
</columns>
</JFXTreeTableView>
答案 0 :(得分:0)
问题问题已经有一段时间了,我看到有些人看过这个话题 这是一个答案。当然不是最好的 - 但它确实有效。
首先,在创建树时 - 需要setSortPolicy
树
以下是我的项目中的样子:
protected void createTree(JFXTreeTableView<ScanModel> tree, ObservableList<ScanModel> elements) {
tree.setRoot(new RecursiveTreeItem<ScanModel>(elements, RecursiveTreeObject::getChildren));
tree.setShowRoot(false);
tree.getSelectionModel().clearSelection();
// set sort policy for the table in two levels
tree.setSortPolicy(t -> {
Comparator<TreeItem<ScanModel>> studiesComparator = (r1, r2) -> {
try {
int r1Value = Integer.parseInt(r1.getValue().getDisplayName());
int r2Value = Integer.parseInt(r2.getValue().getDisplayName());
return Integer.compare(r2Value, r1Value);
} catch (NumberFormatException e) {
return r2.getValue().getDisplayName().compareToIgnoreCase(r1.getValue().getDisplayName());
}
};
FXCollections.sort(tree.getRoot().getChildren(), studiesComparator);
for (TreeItem<ScanModel> series : tree.getRoot().getChildren()) {
Comparator<TreeItem<ScanModel>> seriesComparator = (r1, r2) -> {
try {
int r1Value = Integer.parseInt(r1.getValue().getDisplayName());
int r2Value = Integer.parseInt(r2.getValue().getDisplayName());
return Integer.compare(r1Value, r2Value);
} catch (NumberFormatException e) {
return r1.getValue().getDisplayName().compareToIgnoreCase(r2.getValue().getDisplayName());
}
};
series.getChildren().sort(seriesComparator);
}
return true;
});
}
其次,对于添加到树中的每个新项目 - 我调用sort
方法。
/**
* Sort the table according to the configured sort policy
*
* @param tree
*/
protected void sortTree(JFXTreeTableView<ScanModel> tree) {
// Keep selected row and set it again after sort
TreeItem<ScanModel> selectedRow = tree.getSelectionModel().getSelectedItem();
tree.sort();
tree.getSelectionModel().select(selectedRow);
}
希望它能帮助一些未来的观众。
NAOR