javafx.scene.control.TreeItem#getValue ( )源码实例Demo

void selectedRowChanged() {
    TreeItem<ModularFeatureListRow> selectedItem = featureTable.getSelectionModel()
        .getSelectedItem();
//    featureTable.getColumns().forEach(c -> logger.info(c.getText()));
    logger.info(
        "selected: " + featureTable.getSelectionModel().getSelectedCells().get(0).getTableColumn()
            .getText());

    if (selectedItem == null) {
      return;
    }

    ModularFeatureListRow selectedRow = selectedItem.getValue();
    if (selectedRow == null) {
      return;
    }

    updateXICPlot(selectedRow);
    updateSpectrumPlot(selectedRow);
  }
 

/**
 * 删除数据源
 */
private void deleteDataSource(ActionEvent actionEvent) {
    // 选中的数据源
    TreeItem<DataItem> dataItemTreeItem = mainController.getTreeViewDataSource().getSelectionModel().getSelectedItem();

    // 从根节点删除数据源
    mainController.getTreeItemDataSourceRoot().getChildren().remove(dataItemTreeItem);

    DataSource dataSource = (DataSource) dataItemTreeItem.getValue();

    // 关闭右边的 Border 展示
    this.rightBorderShowClose(dataSource);

    // 删除对应的文件
    dataSourceService.deleteDataSource(dataSource);

    // 删除全局的记录
    BaseConstants.allDataSources.remove(dataItemTreeItem);
}
 

/**
 * Load children of the tree item in the background.
 *
 * @param treeItem the tree item.
 */
@BackgroundThread
private void lazyLoadChildren(
        @NotNull TreeItem<ResourceElement> treeItem,
        @Nullable Consumer<TreeItem<ResourceElement>> callback
) {

    var element = treeItem.getValue();
    var children = element.getChildren(extensionFilter, isOnlyFolders());
    if (children == null) {
        return;
    }

    children.sort(NAME_COMPARATOR);

    EXECUTOR_MANAGER.addFxTask(() -> lazyLoadChildren(treeItem, children, callback));
}
 

public void setSelection(TreeItem<ConditionNode> item) {
    try {
        if (item == null || !(item instanceof CheckBoxTreeItem)) {
            return;
        }
        CheckBoxTreeItem<ConditionNode> citem = (CheckBoxTreeItem<ConditionNode>) item;
        ConditionNode node = item.getValue();
        if (selectedTitles.contains(node.getTitle())) {
            citem.setSelected(true);
            return;
        } else if (item.isLeaf()) {
            return;
        }
        for (TreeItem<ConditionNode> child : item.getChildren()) {
            setSelection(child);
        }
    } catch (Exception e) {
        logger.debug(e.toString());
    }
}
 

/**
 * Fill the tree item.
 *
 * @param item the tree item.
 */
@FxThread
private void fill(@NotNull final TreeItem<VirtualResourceElement<?>> item) {

    final VirtualResourceElement<?> element = item.getValue();
    if(!element.hasChildren()) {
        return;
    }

    final ObservableList<TreeItem<VirtualResourceElement<?>>> items = item.getChildren();

    final Array<VirtualResourceElement<?>> children = element.getChildren();
    children.sort(NAME_COMPARATOR);
    children.forEach(child -> items.add(new TreeItem<>(child)));

    items.forEach(this::fill);
}
 

@FXML
private void onSaveAllMaterial() {
	try {
		// current material could have been edited
		setAttributes(selectedMaterialItem);

		// save all modified materials
		for (TreeItem<MaterialNode> editedMaterialItem : editedMaterialItems) {
			MaterialNode node = editedMaterialItem.getValue();
			Material saved = (Material) PersistenceService.instance().save(node.getMaterial());
			node.setMaterial(saved);
			resetGraphic(editedMaterialItem);
		}
		editedMaterialItems.clear();

		// update category list
		populateCategories();
		tvMaterials.refresh();

	} catch (Exception e) {
		AppUtils.showErrorDialog(e);
	}
}
 

@FXML
private void onSaveAllEntities() {
	try {
		// current entity could have been edited
		setAttributes(selectedEntityItem);

		// save all modified entities
		for (TreeItem<EntityNode> editedEntityItem : editedEntityItems) {
			EntityNode node = editedEntityItem.getValue();
			PlantEntity entity = node.getPlantEntity();
			PlantEntity saved = (PlantEntity) PersistenceService.instance().save(entity);
			node.setPlantEntity(saved);
			setEntityGraphic(editedEntityItem);
		}

		editedEntityItems.clear();

		tvEntities.refresh();

	} catch (Exception e) {
		AppUtils.showErrorDialog(e);
	}
}
 

@SuppressWarnings("unchecked")
public void deleteItem(TreeItem<NamedTag> item) {
	if (item.getValue().parent != null) {
		// named tag is in compound tag, indexed tag is in list tag
		if (item.getValue().parent.getID() == 10) {
			CompoundTag comp = (CompoundTag) item.getValue().parent;
			comp.remove(item.getValue().name);
			item.getParent().getChildren().remove(item);
		} else if (item.getValue().parent.getID() == 9) {
			ListTag<Tag<?>> list = (ListTag<Tag<?>>) item.getValue().parent;
			int index;
			for (index = 0; index < list.size(); index++) {
				if (list.get(index) == item.getValue().tag) {
					list.remove(index);
					break;
				}
			}
			item.getParent().getChildren().remove(item);
		}
	}
}
 

/** @param items Model's root items or body of command
 *  @param command Command to remove
 *  @return <code>true</code> if command was found and tree item was removed
 */
private boolean remove(final List<TreeItem<ScanCommand>> items,
                       final ScanCommand command)
{
    for (TreeItem<ScanCommand> item : items)
        if (item.getValue() == command)
        {
            items.remove(item);
            return true;
        }
        else if (remove(item.getChildren(), command))
            return true;
    return false;
}
 

@Override
public void changed(ObservableValue<? extends TreeItem<Object>> observable, TreeItem<Object> oldValue,
        TreeItem<Object> newValue) {
    if (newValue == null) {
        okButton.setDisable(true);
        documentArea.setText("");
        argumentPane.getChildren().clear();
        return;
    }
    TreeItem<Object> item = tree.getSelectionModel().getSelectedItem();
    String doc = "";
    boolean disable = true;
    functionItem = item;
    Object value = item.getValue();
    if (value instanceof Module) {
        doc = ((Module) value).getDocumentation();
    } else {
        doc = ((Function) value).getDocumentation();
        disable = false;
    }
    okButton.setDisable(disable);
    documentArea.setText(doc);
    argumentPane.getChildren().clear();
    if (item.isLeaf()) {
        addArguments(item);
    }
}
 

private void assertTreeContains(final TreeItem<FileInfo> item, final Path file)
{
    final Path dir = item.getValue().file.toPath();
    if (! file.startsWith(dir))
    {
        logger.log(Level.WARNING, "Cannot check for " + file + " within " + dir);
        return;
    }

    // Are we looking for a directory, and this one is it? Done!
    if (dir.equals(file))
        return;

    final int dir_len = dir.getNameCount();
    final File sub = new File(item.getValue().file, file.getName(dir_len).toString());
    logger.log(Level.FINE, () -> "Looking for " + sub + " in " + dir);

    for (TreeItem<FileInfo> child : item.getChildren())
        if (sub.equals(child.getValue().file))
        {
            logger.log(Level.FINE,"Found it!");
            if (sub.isDirectory())
                assertTreeContains(child, file);
            return;
        }

    logger.log(Level.FINE, () -> "Forcing refresh of " + dir + " to show " + sub);
    Platform.runLater(() -> ((FileTreeItem)item).forceRefresh());
}
 

private void onModuleTrace(ActionEvent e) {
    TreeItem<ModFunc> selectedItem = selectedTreeItemProperty().get();

    if(selectedItem == null)
        return;
    if(selectedItem.getValue() == null)
        return;
    if(!selectedItem.getValue().isModule())
        selectedItem = selectedItem.getParent();

    HashSet<ModFunc> funcs = new HashSet<ModFunc>();
    recurseModFuncItems(selectedItem, funcs);

    toggleTraceMod(funcs);
}
 

public void removeFile(final RawDataFile rawDataFile) {
  super.removeFile(rawDataFile);
  for (TreeItem<?> df1 : rawDataRootItem.getChildren()) {
    if (df1.getValue() == rawDataFile) {
      rawDataRootItem.getChildren().remove(df1);
      break;
    }
  }
}
 

/** Paste commands from clipboard, append after currently selected item */
void pasteFromClipboard()
{
    final Clipboard clip = Clipboard.getSystemClipboard();
    if (ScanCommandDragDrop.hasCommands(clip))
    {
        final List<ScanCommand> commands = ScanCommandDragDrop.getCommands(clip);

        final TreeItem<ScanCommand> item = getSelectionModel().getSelectedItem();
        final ScanCommand location = item != null ? item.getValue() : null;
        undo.execute(new AddCommands(model, location, commands, true));
    }
}
 

public void checkSelection(TreeItem<ConditionNode> item) {
    try {
        if (item == null || !(item instanceof CheckBoxTreeItem)) {
            return;
        }
        CheckBoxTreeItem<ConditionNode> citem = (CheckBoxTreeItem<ConditionNode>) item;
        ConditionNode node = item.getValue();
        if (citem.isSelected()) {
            if (finalConditions == null || finalConditions.isBlank()) {
                if (node.getCondition() == null || node.getCondition().isBlank()) {
                    finalConditions = "";
                } else {
                    finalConditions = " ( " + node.getCondition() + ") ";
                }
            } else {
                if (node.getCondition() != null && !node.getCondition().isBlank()) {
                    finalConditions += " OR ( " + node.getCondition() + " ) ";
                }
            }

            if (finalTitle == null || finalTitle.isBlank()) {
                finalTitle = "\"" + node.getTitle() + "\"";
            } else {
                finalTitle += " + \"" + node.getTitle() + "\"";
            }
            if (!selectedTitles.contains(node.getTitle())) {
                selectedTitles.add(node.getTitle());
            }
            return;
        } else if (item.isLeaf() || !citem.isIndeterminate()) {
            return;
        }
        for (TreeItem<ConditionNode> child : item.getChildren()) {
            checkSelection(child);
        }
    } catch (Exception e) {
        logger.debug(e.toString());
    }
}
 

/** @param file File to move or copy
 *  @param target_item Destination directory's tree item
 */
private void move_or_copy(final File file, final TreeItem<FileInfo> target_item, final TransferMode transferMode)
{
    final File dir = target_item.getValue().file;
    // Ignore NOP move
    if (file.getParentFile().equals(dir))
        return;

    JobManager.schedule(Messages.MoveOrCopyJobName, monitor ->
    {
        // System.out.println("Move " + file + " into " + dir);
        final File new_name = new File(dir, file.getName());

        final DirectoryMonitor mon = ((FileTreeItem)target_item).getMonitor();
        try
        {
            if (transferMode.equals(TransferMode.MOVE))
                FileHelper.move(file, dir);
            else
                FileHelper.copy(file, dir);
            Platform.runLater(() ->
            {
                // System.out.println("Add tree item for " + new_name + " to " + target_item.getValue());
                final ObservableList<TreeItem<FileInfo>> siblings = target_item.getChildren();
                siblings.add(new FileTreeItem(mon, new_name));
                FileTreeItem.sortSiblings(siblings);
            });
        }
        catch (Exception ex)
        {
            final TreeTableView<FileInfo> tree = getTreeTableView();
            ExceptionDetailsErrorDialog.openError(tree, Messages.MoveOrCopyAlertTitle,
                                                  MessageFormat.format(Messages.MoveOrCopyAlert, file, target_item.getValue()), ex);
            // Force full refresh
            Platform.runLater(() ->
                tree.setRoot(new FileTreeItem(mon, tree.getRoot().getValue().file)) );
        }
    });
}
 

private void trigger(Event t) {
    BibleSearchTreeView tv = (BibleSearchTreeView) t.getSource();
    TreeItem<BibleInterface> ti = tv.getSelectionModel().getSelectedItem();
    if (ti != null) {
        if (ti.getValue() instanceof BibleVerse) {
            textPane.getChildren().clear();
            BibleChapter chapter = (BibleChapter) ti.getValue().getParent();
            BibleVerse[] verses = chapter.getVerses();
            BibleVerse selected = (BibleVerse) ti.getValue();

            int x = selected.getNum() - 1;
            for (int i = 0; i < verses.length; i++) {
                Text text = new Text(verses[i].toString() + " ");
                text.getStyleClass().add("text");
                if (i == x) {
                    text.setFont(Font.font("Sans", FontWeight.BOLD, 14));
                } else {
                    text.setFont(Font.font("Sans", 14));
                }
                textPane.getChildren().add(text);
                text.wrappingWidthProperty().bind(sp.widthProperty().subtract(20)); //-20 to account for scroll bar width
            }
        } else {
            ti.setExpanded(!ti.isExpanded());
        }
    } else {
        tv.selectionModelProperty().get().selectFirst();
    }
}
 

private void copy(ObservableList<TreeItem<Resource>> selectedItems) {
    Clipboard clipboard = Clipboard.getSystemClipboard();
    Map<DataFormat, Object> content = new HashMap<>();
    for (TreeItem<Resource> treeItem : selectedItems) {
        Resource resource = treeItem.getValue();
        if (resource != null) {
            if (!resource.copy(content)) {
                FXUIUtils.showMessageDialog(null, "Clipboard operation failed", "Unhandled resource selection",
                        AlertType.ERROR);
            }
        }
    }
    clipboard.setContent(content);
    clipboardOperation = Operation.COPY;
}
 

public static @Nonnull List<FeatureTable> getSelectedFeatureTables() {

    final ArrayList<FeatureTable> list = new ArrayList<>();
    final TreeView<Object> featureTableTree = mainWindowController.getFeatureTree();
    for (TreeItem<Object> item : featureTableTree.getSelectionModel().getSelectedItems()) {
      if (!(item.getValue() instanceof FeatureTable))
        continue;
      FeatureTable ft = (FeatureTable) item.getValue();
      list.add(ft);
    }

    return list;

  }
 

private void onNewFolder() {
    MarathonInputStage testNameStage = new MarathonInputStage("Folder name", "Create a new folder",
            FXUIUtils.getIcon("fldr_closed")) {

        @Override
        protected String validateInput(String name) {
            String errorMessage = null;
            if (name.length() == 0 || name.trim().isEmpty()) {
                errorMessage = "Enter a valid name";
            }
            return errorMessage;
        }

        @Override
        protected String getInputFiledLabelText() {
            return "Enter a folder name: ";
        }

        @Override
        protected void setDefaultButton() {
            okButton.setDefaultButton(true);
        }
    };
    FolderNameHandler testNameHandler = new FolderNameHandler();
    testNameStage.setInputHandler(testNameHandler);
    testNameStage.getStage().showAndWait();
    TreeItem<File> selectedItem = parentTreeView.getSelectionModel().getSelectedItem();
    String testName = testNameHandler.getTestName();
    if (testName == null || "".equals(testName)) {
        return;
    }
    File file = new File(selectedItem.getValue(), testName);
    if (file.exists()) {
        FXUIUtils.showMessageDialog(getStage(), "Folder with name '" + testName + "' already exists.", "File exists",
                AlertType.INFORMATION);
    } else {
        selectedItem.getChildren().add(new TreeItem<File>(file));
        if (!file.mkdir()) {
            FXUIUtils.showMessageDialog(getStage(), "Couldn't create folder with name '" + testName + "'", "Creation Fail",
                    AlertType.ERROR);
        }
    }
}