javafx.scene.control.skin.TableColumnHeader Maven / Gradle / Ivy
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* Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package javafx.scene.control.skin;
import com.sun.javafx.scene.control.LambdaMultiplePropertyChangeListenerHandler;
import com.sun.javafx.scene.control.Properties;
import com.sun.javafx.scene.control.TableColumnBaseHelper;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.ReadOnlyObjectProperty;
import javafx.beans.property.ReadOnlyObjectWrapper;
import javafx.beans.value.WritableValue;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.collections.WeakListChangeListener;
import javafx.css.CssMetaData;
import javafx.css.PseudoClass;
import javafx.css.Styleable;
import javafx.css.StyleableDoubleProperty;
import javafx.css.StyleableProperty;
import javafx.event.EventHandler;
import javafx.geometry.HPos;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.geometry.VPos;
import javafx.scene.AccessibleAttribute;
import javafx.scene.AccessibleRole;
import javafx.scene.Node;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableColumnBase;
import javafx.scene.input.ContextMenuEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.scene.layout.Region;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
import javafx.css.converter.SizeConverter;
import static com.sun.javafx.scene.control.TableColumnSortTypeWrapper.getSortTypeName;
import static com.sun.javafx.scene.control.TableColumnSortTypeWrapper.getSortTypeProperty;
import static com.sun.javafx.scene.control.TableColumnSortTypeWrapper.isAscending;
import static com.sun.javafx.scene.control.TableColumnSortTypeWrapper.isDescending;
import static com.sun.javafx.scene.control.TableColumnSortTypeWrapper.setSortType;
/**
* Region responsible for painting a single column header. A subcomponent used by
* subclasses of {@link TableViewSkinBase}.
*
* @since 9
*/
public class TableColumnHeader extends Region {
/***************************************************************************
* *
* Static Fields *
* *
**************************************************************************/
static final String DEFAULT_STYLE_CLASS = "column-header";
// Copied from TableColumn. The value here should always be in-sync with
// the value in TableColumn
static final double DEFAULT_COLUMN_WIDTH = 80.0F;
/***************************************************************************
* *
* Private Fields *
* *
**************************************************************************/
private boolean autoSizeComplete = false;
private double dragOffset;
private NestedTableColumnHeader nestedColumnHeader;
private TableHeaderRow tableHeaderRow;
private NestedTableColumnHeader parentHeader;
// work out where this column currently is within its parent
Label label;
// sort order
int sortPos = -1;
private Region arrow;
private Label sortOrderLabel;
private HBox sortOrderDots;
private Node sortArrow;
private boolean isSortColumn;
private boolean isSizeDirty = false;
boolean isLastVisibleColumn = false;
// package for testing
int columnIndex = -1;
private int newColumnPos;
// the line drawn in the table when a user presses and moves a column header
// to indicate where the column will be dropped. This is provided by the
// table skin, but manipulated by the header
Region columnReorderLine;
/***************************************************************************
* *
* Constructor *
* *
**************************************************************************/
/**
* Creates a new TableColumnHeader instance to visually represent the given
* {@link TableColumnBase} instance.
*
* @param tc The table column to be visually represented by this instance.
*/
public TableColumnHeader(final TableColumnBase tc) {
setTableColumn(tc);
setFocusTraversable(false);
initStyleClasses();
initUI();
// change listener for multiple properties
changeListenerHandler = new LambdaMultiplePropertyChangeListenerHandler();
changeListenerHandler.registerChangeListener(sceneProperty(), e -> updateScene());
if (getTableColumn() != null) {
changeListenerHandler.registerChangeListener(tc.idProperty(), e -> setId(tc.getId()));
changeListenerHandler.registerChangeListener(tc.styleProperty(), e -> setStyle(tc.getStyle()));
changeListenerHandler.registerChangeListener(tc.widthProperty(), e -> {
// It is this that ensures that when a column is resized that the header
// visually adjusts its width as necessary.
isSizeDirty = true;
requestLayout();
});
changeListenerHandler.registerChangeListener(tc.visibleProperty(), e -> setVisible(getTableColumn().isVisible()));
changeListenerHandler.registerChangeListener(tc.sortNodeProperty(), e -> updateSortGrid());
changeListenerHandler.registerChangeListener(tc.sortableProperty(), e -> {
// we need to notify all headers that a sortable state has changed,
// in case the sort grid in other columns needs to be updated.
if (TableSkinUtils.getSortOrder(getTableSkin()).contains(getTableColumn())) {
NestedTableColumnHeader root = getTableHeaderRow().getRootHeader();
updateAllHeaders(root);
}
});
changeListenerHandler.registerChangeListener(tc.textProperty(), e -> label.setText(tc.getText()));
changeListenerHandler.registerChangeListener(tc.graphicProperty(), e -> label.setGraphic(tc.getGraphic()));
setId(tc.getId());
setStyle(tc.getStyle());
/* Having TableColumn role parented by TableColumn causes VoiceOver to be unhappy */
setAccessibleRole(AccessibleRole.TABLE_COLUMN);
}
}
/***************************************************************************
* *
* Listeners *
* *
**************************************************************************/
final LambdaMultiplePropertyChangeListenerHandler changeListenerHandler;
private ListChangeListener> sortOrderListener = c -> {
updateSortPosition();
};
private ListChangeListener> visibleLeafColumnsListener = c -> {
updateColumnIndex();
updateSortPosition();
};
private ListChangeListener styleClassListener = c -> {
while (c.next()) {
if (c.wasRemoved()) {
getStyleClass().removeAll(c.getRemoved());
}
if (c.wasAdded()) {
getStyleClass().addAll(c.getAddedSubList());
}
}
};
private WeakListChangeListener> weakSortOrderListener =
new WeakListChangeListener>(sortOrderListener);
private final WeakListChangeListener> weakVisibleLeafColumnsListener =
new WeakListChangeListener>(visibleLeafColumnsListener);
private final WeakListChangeListener weakStyleClassListener =
new WeakListChangeListener(styleClassListener);
private static final EventHandler mousePressedHandler = me -> {
TableColumnHeader header = (TableColumnHeader) me.getSource();
TableColumnBase tableColumn = header.getTableColumn();
ContextMenu menu = tableColumn.getContextMenu();
if (menu != null && menu.isShowing()) {
menu.hide();
}
if (me.isConsumed()) return;
me.consume();
header.getTableHeaderRow().columnDragLock = true;
// pass focus to the table, so that the user immediately sees
// the focus rectangle around the table control.
header.getTableSkin().getSkinnable().requestFocus();
if (me.isPrimaryButtonDown() && header.isColumnReorderingEnabled()) {
header.columnReorderingStarted(me.getX());
}
};
private static final EventHandler mouseDraggedHandler = me -> {
if (me.isConsumed()) return;
me.consume();
TableColumnHeader header = (TableColumnHeader) me.getSource();
if (me.isPrimaryButtonDown() && header.isColumnReorderingEnabled()) {
header.columnReordering(me.getSceneX(), me.getSceneY());
}
};
private static final EventHandler mouseReleasedHandler = me -> {
if (me.isPopupTrigger()) return;
if (me.isConsumed()) return;
me.consume();
TableColumnHeader header = (TableColumnHeader) me.getSource();
header.getTableHeaderRow().columnDragLock = false;
if (header.getTableHeaderRow().isReordering() && header.isColumnReorderingEnabled()) {
header.columnReorderingComplete();
} else if (me.isStillSincePress()) {
header.sortColumn(me.isShiftDown());
}
};
private static final EventHandler contextMenuRequestedHandler = me -> {
TableColumnHeader header = (TableColumnHeader) me.getSource();
TableColumnBase tableColumn = header.getTableColumn();
ContextMenu menu = tableColumn.getContextMenu();
if (menu != null) {
menu.show(header, me.getScreenX(), me.getScreenY());
me.consume();
}
};
/***************************************************************************
* *
* Properties *
* *
**************************************************************************/
// --- size
private DoubleProperty size;
private final double getSize() {
return size == null ? 20.0 : size.doubleValue();
}
private final DoubleProperty sizeProperty() {
if (size == null) {
size = new StyleableDoubleProperty(20) {
@Override
protected void invalidated() {
double value = get();
if (value <= 0) {
if (isBound()) {
unbind();
}
set(20);
throw new IllegalArgumentException("Size cannot be 0 or negative");
}
}
@Override public Object getBean() {
return TableColumnHeader.this;
}
@Override public String getName() {
return "size";
}
@Override public CssMetaData getCssMetaData() {
return StyleableProperties.SIZE;
}
};
}
return size;
}
/**
* A property that refers to the {@link TableColumnBase} instance that this
* header is visually represents.
*/
// --- table column
private ReadOnlyObjectWrapper> tableColumn = new ReadOnlyObjectWrapper<>(this, "tableColumn");
private final void setTableColumn(TableColumnBase column) {
tableColumn.set(column);
}
public final TableColumnBase getTableColumn() {
return tableColumn.get();
}
public final ReadOnlyObjectProperty> tableColumnProperty() {
return tableColumn.getReadOnlyProperty();
}
/***************************************************************************
* *
* Public API *
* *
**************************************************************************/
/** {@inheritDoc} */
@Override protected void layoutChildren() {
if (isSizeDirty) {
resize(getTableColumn().getWidth(), getHeight());
isSizeDirty = false;
}
double sortWidth = 0;
double w = snapSizeX(getWidth()) - (snappedLeftInset() + snappedRightInset());
double h = getHeight() - (snappedTopInset() + snappedBottomInset());
double x = w;
// a bit hacky, but we REALLY don't want the arrow shape to fluctuate
// in size
if (arrow != null) {
arrow.setMaxSize(arrow.prefWidth(-1), arrow.prefHeight(-1));
}
if (sortArrow != null && sortArrow.isVisible()) {
sortWidth = sortArrow.prefWidth(-1);
x -= sortWidth;
sortArrow.resize(sortWidth, sortArrow.prefHeight(-1));
positionInArea(sortArrow, x, snappedTopInset(),
sortWidth, h, 0, HPos.CENTER, VPos.CENTER);
}
if (label != null) {
double labelWidth = w - sortWidth;
label.resizeRelocate(snappedLeftInset(), 0, labelWidth, getHeight());
}
}
/** {@inheritDoc} */
@Override protected double computePrefWidth(double height) {
if (getNestedColumnHeader() != null) {
double width = getNestedColumnHeader().prefWidth(height);
if (getTableColumn() != null) {
TableColumnBaseHelper.setWidth(getTableColumn(), width);
}
return width;
} else if (getTableColumn() != null && getTableColumn().isVisible()) {
return snapSizeX(getTableColumn().getWidth());
}
return 0;
}
/** {@inheritDoc} */
@Override protected double computeMinHeight(double width) {
return label == null ? 0 : label.minHeight(width);
}
/** {@inheritDoc} */
@Override protected double computePrefHeight(double width) {
if (getTableColumn() == null) return 0;
return Math.max(getSize(), label.prefHeight(-1));
}
/** {@inheritDoc} */
@Override public List> getCssMetaData() {
return getClassCssMetaData();
}
/** {@inheritDoc} */
@Override public Object queryAccessibleAttribute(AccessibleAttribute attribute, Object... parameters) {
switch (attribute) {
case INDEX: return getIndex(getTableColumn());
case TEXT: return getTableColumn() != null ? getTableColumn().getText() : null;
default: return super.queryAccessibleAttribute(attribute, parameters);
}
}
/***************************************************************************
* *
* Private Implementation *
* *
**************************************************************************/
void initStyleClasses() {
getStyleClass().setAll(DEFAULT_STYLE_CLASS);
installTableColumnStyleClassListener();
}
void installTableColumnStyleClassListener() {
TableColumnBase tc = getTableColumn();
if (tc != null) {
// add in all styleclasses from the table column into the header, and also set up a listener
// so that any subsequent changes to the table column are also applied to the header
getStyleClass().addAll(tc.getStyleClass());
tc.getStyleClass().addListener(weakStyleClassListener);
}
}
NestedTableColumnHeader getNestedColumnHeader() { return nestedColumnHeader; }
void setNestedColumnHeader(NestedTableColumnHeader nch) { nestedColumnHeader = nch; }
/**
* Returns the {@link TableHeaderRow} associated with this {@code TableColumnHeader}.
*
* @return the {@code TableHeaderRow} associated with this {@code TableColumnHeader}
* @since 12
*/
protected TableHeaderRow getTableHeaderRow() {
return tableHeaderRow;
}
void setTableHeaderRow(TableHeaderRow thr) {
tableHeaderRow = thr;
updateTableSkin();
}
private void updateTableSkin() {
// when we get the table header row, we are also given the skin,
// so this is the time to hook up listeners, etc.
TableViewSkinBase tableSkin = getTableSkin();
if (tableSkin == null) return;
updateColumnIndex();
this.columnReorderLine = tableSkin.getColumnReorderLine();
if (getTableColumn() != null) {
updateSortPosition();
TableSkinUtils.getSortOrder(tableSkin).addListener(weakSortOrderListener);
TableSkinUtils.getVisibleLeafColumns(tableSkin).addListener(weakVisibleLeafColumnsListener);
}
}
/**
* Returns the {@code TableViewSkinBase} in which this {@code TableColumnHeader} is inserted. This will return
* {@code null} until the {@code TableHeaderRow} has been set.
*
* @return the {@code TableViewSkinBase} in which this {@code TableColumnHeader} is inserted, or {@code null}
* @since 12
*/
protected TableViewSkinBase getTableSkin() {
return tableHeaderRow == null ? null : tableHeaderRow.tableSkin;
}
NestedTableColumnHeader getParentHeader() { return parentHeader; }
void setParentHeader(NestedTableColumnHeader ph) { parentHeader = ph; }
// RT-29682: When the sortable property of a TableColumnBase changes this
// may impact other TableColumnHeaders, as they may need to change their
// sort order representation. Rather than install listeners across all
// TableColumn in the sortOrder list for their sortable property, we simply
// update the sortPosition of all headers whenever the sortOrder property
// changes, assuming the column is within the sortOrder list.
private void updateAllHeaders(TableColumnHeader header) {
if (header instanceof NestedTableColumnHeader) {
List children = ((NestedTableColumnHeader)header).getColumnHeaders();
for (int i = 0; i < children.size(); i++) {
updateAllHeaders(children.get(i));
}
} else {
header.updateSortPosition();
}
}
private void updateScene() {
// RT-17684: If the TableColumn widths are all currently the default,
// we attempt to 'auto-size' based on the preferred width of the first
// n rows (we can't do all rows, as that could conceivably be an unlimited
// number of rows retrieved from a very slow (e.g. remote) data source.
// Obviously, the bigger the value of n, the more likely the default
// width will be suitable for most values in the column
final int n = 30;
if (! autoSizeComplete) {
if (getTableColumn() == null || getTableColumn().getWidth() != DEFAULT_COLUMN_WIDTH || getScene() == null) {
return;
}
doColumnAutoSize(getTableColumn(), n);
autoSizeComplete = true;
}
}
void dispose() {
TableViewSkinBase tableSkin = getTableSkin();
if (tableSkin != null) {
TableSkinUtils.getVisibleLeafColumns(tableSkin).removeListener(weakVisibleLeafColumnsListener);
TableSkinUtils.getSortOrder(tableSkin).removeListener(weakSortOrderListener);
}
changeListenerHandler.dispose();
}
private boolean isSortingEnabled() {
// this used to check if ! PlatformUtil.isEmbedded(), but has been changed
// to always return true (for now), as we want to support column sorting
// everywhere
return true;
}
private boolean isColumnReorderingEnabled() {
// we only allow for column reordering if there are more than one column,
return !Properties.IS_TOUCH_SUPPORTED && TableSkinUtils.getVisibleLeafColumns(getTableSkin()).size() > 1;
}
private void initUI() {
// TableColumn will be null if we are dealing with the root NestedTableColumnHeader
if (getTableColumn() == null) return;
// set up mouse events
setOnMousePressed(mousePressedHandler);
setOnMouseDragged(mouseDraggedHandler);
setOnDragDetected(event -> event.consume());
setOnContextMenuRequested(contextMenuRequestedHandler);
setOnMouseReleased(mouseReleasedHandler);
// --- label
label = new Label();
label.setText(getTableColumn().getText());
label.setGraphic(getTableColumn().getGraphic());
label.setVisible(getTableColumn().isVisible());
// ---- container for the sort arrow (which is not supported on embedded
// platforms)
if (isSortingEnabled()) {
// put together the grid
updateSortGrid();
}
}
private void doColumnAutoSize(TableColumnBase column, int cellsToMeasure) {
double prefWidth = column.getPrefWidth();
// if the prefWidth has been set, we do _not_ autosize columns
if (prefWidth == DEFAULT_COLUMN_WIDTH) {
TableSkinUtils.resizeColumnToFitContent(getTableSkin(), column, cellsToMeasure);
// getTableViewSkin().resizeColumnToFitContent(column, cellsToMeasure);
}
}
private void updateSortPosition() {
this.sortPos = ! getTableColumn().isSortable() ? -1 : getSortPosition();
updateSortGrid();
}
private void updateSortGrid() {
// Fix for RT-14488
if (this instanceof NestedTableColumnHeader) return;
getChildren().clear();
getChildren().add(label);
// we do not support sorting in embedded devices
if (! isSortingEnabled()) return;
isSortColumn = sortPos != -1;
if (! isSortColumn) {
if (sortArrow != null) {
sortArrow.setVisible(false);
}
return;
}
// RT-28016: if the tablecolumn is not a visible leaf column, we should ignore this
int visibleLeafIndex = TableSkinUtils.getVisibleLeafIndex(getTableSkin(), getTableColumn());
if (visibleLeafIndex == -1) return;
final int sortColumnCount = getVisibleSortOrderColumnCount();
boolean showSortOrderDots = sortPos <= 3 && sortColumnCount > 1;
Node _sortArrow = null;
if (getTableColumn().getSortNode() != null) {
_sortArrow = getTableColumn().getSortNode();
getChildren().add(_sortArrow);
} else {
GridPane sortArrowGrid = new GridPane();
_sortArrow = sortArrowGrid;
sortArrowGrid.setPadding(new Insets(0, 3, 0, 0));
getChildren().add(sortArrowGrid);
// if we are here, and the sort arrow is null, we better create it
if (arrow == null) {
arrow = new Region();
arrow.getStyleClass().setAll("arrow");
arrow.setVisible(true);
arrow.setRotate(isAscending(getTableColumn()) ? 180.0F : 0.0F);
changeListenerHandler.registerChangeListener(getSortTypeProperty(getTableColumn()), e -> {
updateSortGrid();
if (arrow != null) {
arrow.setRotate(isAscending(getTableColumn()) ? 180 : 0.0);
}
});
}
arrow.setVisible(isSortColumn);
if (sortPos > 2) {
if (sortOrderLabel == null) {
// ---- sort order label (for sort positions greater than 3)
sortOrderLabel = new Label();
sortOrderLabel.getStyleClass().add("sort-order");
}
// only show the label if the sortPos is greater than 3 (for sortPos
// values less than three, we show the sortOrderDots instead)
sortOrderLabel.setText("" + (sortPos + 1));
sortOrderLabel.setVisible(sortColumnCount > 1);
// update the grid layout
sortArrowGrid.add(arrow, 1, 1);
GridPane.setHgrow(arrow, Priority.NEVER);
GridPane.setVgrow(arrow, Priority.NEVER);
sortArrowGrid.add(sortOrderLabel, 2, 1);
} else if (showSortOrderDots) {
if (sortOrderDots == null) {
sortOrderDots = new HBox(0);
sortOrderDots.getStyleClass().add("sort-order-dots-container");
}
// show the sort order dots
boolean isAscending = isAscending(getTableColumn());
int arrowRow = isAscending ? 1 : 2;
int dotsRow = isAscending ? 2 : 1;
sortArrowGrid.add(arrow, 1, arrowRow);
GridPane.setHalignment(arrow, HPos.CENTER);
sortArrowGrid.add(sortOrderDots, 1, dotsRow);
updateSortOrderDots(sortPos);
} else {
// only show the arrow
sortArrowGrid.add(arrow, 1, 1);
GridPane.setHgrow(arrow, Priority.NEVER);
GridPane.setVgrow(arrow, Priority.ALWAYS);
}
}
sortArrow = _sortArrow;
if (sortArrow != null) {
sortArrow.setVisible(isSortColumn);
}
requestLayout();
}
private void updateSortOrderDots(int sortPos) {
double arrowWidth = arrow.prefWidth(-1);
sortOrderDots.getChildren().clear();
for (int i = 0; i <= sortPos; i++) {
Region r = new Region();
r.getStyleClass().add("sort-order-dot");
String sortTypeName = getSortTypeName(getTableColumn());
if (sortTypeName != null && ! sortTypeName.isEmpty()) {
r.getStyleClass().add(sortTypeName.toLowerCase(Locale.ROOT));
}
sortOrderDots.getChildren().add(r);
// RT-34914: fine tuning the placement of the sort dots. We could have gone to a custom layout, but for now
// this works fine.
if (i < sortPos) {
Region spacer = new Region();
double lp = sortPos == 1 ? 1 : 0;
spacer.setPadding(new Insets(0, 1, 0, lp));
sortOrderDots.getChildren().add(spacer);
}
}
sortOrderDots.setAlignment(Pos.TOP_CENTER);
sortOrderDots.setMaxWidth(arrowWidth);
}
// Package for testing purposes only.
void moveColumn(TableColumnBase column, final int newColumnPos) {
if (column == null || newColumnPos < 0) return;
ObservableList> columns = getColumns(column);
final int columnsCount = columns.size();
final int currentPos = columns.indexOf(column);
int actualNewColumnPos = newColumnPos;
// Fix for RT-35141: We need to account for hidden columns.
// We keep iterating until we see 'requiredVisibleColumns' number of visible columns
final int requiredVisibleColumns = actualNewColumnPos;
int visibleColumnsSeen = 0;
for (int i = 0; i < columnsCount; i++) {
if (visibleColumnsSeen == (requiredVisibleColumns + 1)) {
break;
}
if (columns.get(i).isVisible()) {
visibleColumnsSeen++;
} else {
actualNewColumnPos++;
}
}
// --- end of RT-35141 fix
if (actualNewColumnPos >= columnsCount) {
actualNewColumnPos = columnsCount - 1;
} else if (actualNewColumnPos < 0) {
actualNewColumnPos = 0;
}
if (actualNewColumnPos == currentPos) return;
List> tempList = new ArrayList<>(columns);
tempList.remove(column);
tempList.add(actualNewColumnPos, column);
columns.setAll(tempList);
}
private ObservableList> getColumns(TableColumnBase column) {
return column.getParentColumn() == null ?
TableSkinUtils.getColumns(getTableSkin()) :
column.getParentColumn().getColumns();
}
private int getIndex(TableColumnBase column) {
if (column == null) return -1;
ObservableList> columns = getColumns(column);
int index = -1;
for (int i = 0; i < columns.size(); i++) {
TableColumnBase _column = columns.get(i);
if (! _column.isVisible()) continue;
index++;
if (column.equals(_column)) break;
}
return index;
}
private void updateColumnIndex() {
// TableView tv = getTableView();
TableColumnBase tc = getTableColumn();
TableViewSkinBase tableSkin = getTableSkin();
columnIndex = tableSkin == null || tc == null ? -1 :TableSkinUtils.getVisibleLeafIndex(tableSkin,tc);
// update the pseudo class state regarding whether this is the last
// visible cell (i.e. the right-most).
isLastVisibleColumn = getTableColumn() != null &&
columnIndex != -1 &&
columnIndex == TableSkinUtils.getVisibleLeafColumns(tableSkin).size() - 1;
pseudoClassStateChanged(PSEUDO_CLASS_LAST_VISIBLE, isLastVisibleColumn);
}
private void sortColumn(final boolean addColumn) {
if (! isSortingEnabled()) return;
// we only allow sorting on the leaf columns and columns
// that actually have comparators defined, and are sortable
if (getTableColumn() == null || getTableColumn().getColumns().size() != 0 || getTableColumn().getComparator() == null || !getTableColumn().isSortable()) return;
// final int sortPos = getTable().getSortOrder().indexOf(column);
// final boolean isSortColumn = sortPos != -1;
final ObservableList> sortOrder = TableSkinUtils.getSortOrder(getTableSkin());
// addColumn is true e.g. when the user is holding down Shift
if (addColumn) {
if (!isSortColumn) {
setSortType(getTableColumn(), TableColumn.SortType.ASCENDING);
sortOrder.add(getTableColumn());
} else if (isAscending(getTableColumn())) {
setSortType(getTableColumn(), TableColumn.SortType.DESCENDING);
} else {
int i = sortOrder.indexOf(getTableColumn());
if (i != -1) {
sortOrder.remove(i);
}
}
} else {
// the user has clicked on a column header - we should add this to
// the TableView sortOrder list if it isn't already there.
if (isSortColumn && sortOrder.size() == 1) {
// the column is already being sorted, and it's the only column.
// We therefore move through the 2nd or 3rd states:
// 1st click: sort ascending
// 2nd click: sort descending
// 3rd click: natural sorting (sorting is switched off)
if (isAscending(getTableColumn())) {
setSortType(getTableColumn(), TableColumn.SortType.DESCENDING);
} else {
// remove from sort
sortOrder.remove(getTableColumn());
}
} else if (isSortColumn) {
// the column is already being used to sort, so we toggle its
// sortAscending property, and also make the column become the
// primary sort column
if (isAscending(getTableColumn())) {
setSortType(getTableColumn(), TableColumn.SortType.DESCENDING);
} else if (isDescending(getTableColumn())) {
setSortType(getTableColumn(), TableColumn.SortType.ASCENDING);
}
// to prevent multiple sorts, we make a copy of the sort order
// list, moving the column value from the current position to
// its new position at the front of the list
List> sortOrderCopy = new ArrayList>(sortOrder);
sortOrderCopy.remove(getTableColumn());
sortOrderCopy.add(0, getTableColumn());
sortOrder.setAll(getTableColumn());
} else {
// add to the sort order, in ascending form
setSortType(getTableColumn(), TableColumn.SortType.ASCENDING);
sortOrder.setAll(getTableColumn());
}
}
}
// Because it is possible that some columns are in the sortOrder list but are
// not themselves sortable, we cannot just do sortOrderList.indexOf(column).
// Therefore, this method does the proper work required of iterating through
// and ignoring non-sortable (and null) columns in the sortOrder list.
private int getSortPosition() {
if (getTableColumn() == null) {
return -1;
}
final List sortOrder = getVisibleSortOrderColumns();
int pos = 0;
for (int i = 0; i < sortOrder.size(); i++) {
TableColumnBase _tc = sortOrder.get(i);
if (getTableColumn().equals(_tc)) {
return pos;
}
pos++;
}
return -1;
}
private List getVisibleSortOrderColumns() {
final ObservableList> sortOrder = TableSkinUtils.getSortOrder(getTableSkin());
List visibleSortOrderColumns = new ArrayList<>();
for (int i = 0; i < sortOrder.size(); i++) {
TableColumnBase _tc = sortOrder.get(i);
if (_tc == null || ! _tc.isSortable() || ! _tc.isVisible()) {
continue;
}
visibleSortOrderColumns.add(_tc);
}
return visibleSortOrderColumns;
}
// as with getSortPosition above, this method iterates through the sortOrder
// list ignoring the null and non-sortable columns, so that we get the correct
// number of columns in the sortOrder list.
private int getVisibleSortOrderColumnCount() {
return getVisibleSortOrderColumns().size();
}
/***************************************************************************
* *
* Private Implementation: Column Reordering *
* *
**************************************************************************/
// package for testing
void columnReorderingStarted(double dragOffset) {
if (! getTableColumn().isReorderable()) return;
// Used to ensure the column ghost is positioned relative to where the
// user clicked on the column header
this.dragOffset = dragOffset;
// Note here that we only allow for reordering of 'root' columns
getTableHeaderRow().setReorderingColumn(getTableColumn());
getTableHeaderRow().setReorderingRegion(this);
}
// package for testing
void columnReordering(double sceneX, double sceneY) {
if (! getTableColumn().isReorderable()) return;
// this is for handling the column drag to reorder columns.
// It shows a line to indicate where the 'drop' will be.
// indicate that we've started dragging so that the dragging
// line overlay is shown
getTableHeaderRow().setReordering(true);
// Firstly we need to determine where to draw the line.
// Find which column we're over
TableColumnHeader hoverHeader = null;
// x represents where the mouse is relative to the parent
// NestedTableColumnHeader
final double x = getParentHeader().sceneToLocal(sceneX, sceneY).getX();
// calculate where the ghost column header should be
double dragX = getTableSkin().getSkinnable().sceneToLocal(sceneX, sceneY).getX() - dragOffset;
getTableHeaderRow().setDragHeaderX(dragX);
double startX = 0;
double endX = 0;
double headersWidth = 0;
newColumnPos = 0;
for (TableColumnHeader header : getParentHeader().getColumnHeaders()) {
if (! header.isVisible()) continue;
double headerWidth = header.prefWidth(-1);
headersWidth += headerWidth;
startX = header.getBoundsInParent().getMinX();
endX = startX + headerWidth;
if (x >= startX && x < endX) {
hoverHeader = header;
break;
}
newColumnPos++;
}
// hoverHeader will be null if the drag occurs outside of the
// tableview. In this case we handle the newColumnPos specially
// and then short-circuit. This results in the drop action
// resulting in the correct result (the column will drop at
// the start or end of the table).
if (hoverHeader == null) {
newColumnPos = x > headersWidth ? (getParentHeader().getColumns().size() - 1) : 0;
return;
}
// This is the x-axis value midway through hoverHeader. It's
// used to determine whether the drop should be to the left
// or the right of hoverHeader.
double midPoint = startX + (endX - startX) / 2;
boolean beforeMidPoint = x <= midPoint;
// Based on where the mouse actually is, we have to shuffle
// where we want the column to end up. This code handles that.
int currentPos = getIndex(getTableColumn());
newColumnPos += newColumnPos > currentPos && beforeMidPoint ?
-1 : (newColumnPos < currentPos && !beforeMidPoint ? 1 : 0);
double lineX = getTableHeaderRow().sceneToLocal(hoverHeader.localToScene(hoverHeader.getBoundsInLocal())).getMinX();
lineX = lineX + ((beforeMidPoint) ? (0) : (hoverHeader.getWidth()));
if (lineX >= -0.5 && lineX <= getTableSkin().getSkinnable().getWidth()) {
columnReorderLine.setTranslateX(lineX);
// then if this is the first event, we set the property to true
// so that the line becomes visible until the drop is completed.
// We also set reordering to true so that the various reordering
// effects become visible (ghost, transparent overlay, etc).
columnReorderLine.setVisible(true);
}
getTableHeaderRow().setReordering(true);
}
// package for testing
void columnReorderingComplete() {
if (! getTableColumn().isReorderable()) return;
// Move col from where it is now to the new position.
moveColumn(getTableColumn(), newColumnPos);
// cleanup
columnReorderLine.setTranslateX(0.0F);
columnReorderLine.setLayoutX(0.0F);
newColumnPos = 0;
getTableHeaderRow().setReordering(false);
columnReorderLine.setVisible(false);
getTableHeaderRow().setReorderingColumn(null);
getTableHeaderRow().setReorderingRegion(null);
dragOffset = 0.0F;
}
double getDragRectHeight() {
return getHeight();
}
// Used to test whether this column header properly represents the given column.
// In particular, whether it has child column headers for all child columns
boolean represents(TableColumnBase column) {
if (!column.getColumns().isEmpty()) {
// this column has children, but we are in a TableColumnHeader instance,
// so the match is bad.
return false;
}
return column == getTableColumn();
}
/***************************************************************************
* *
* Stylesheet Handling *
* *
**************************************************************************/
private static final PseudoClass PSEUDO_CLASS_LAST_VISIBLE =
PseudoClass.getPseudoClass("last-visible");
/*
* Super-lazy instantiation pattern from Bill Pugh.
*/
private static class StyleableProperties {
private static final CssMetaData SIZE =
new CssMetaData("-fx-size",
SizeConverter.getInstance(), 20.0) {
@Override
public boolean isSettable(TableColumnHeader n) {
return n.size == null || !n.size.isBound();
}
@Override
public StyleableProperty getStyleableProperty(TableColumnHeader n) {
return (StyleableProperty)(WritableValue)n.sizeProperty();
}
};
private static final List> STYLEABLES;
static {
final List> styleables =
new ArrayList>(Region.getClassCssMetaData());
styleables.add(SIZE);
STYLEABLES = Collections.unmodifiableList(styleables);
}
}
/**
* Returns the CssMetaData associated with this class, which may include the
* CssMetaData of its superclasses.
*
* @return the CssMetaData associated with this class, which may include the
* CssMetaData of its superclasses
*/
public static List> getClassCssMetaData() {
return StyleableProperties.STYLEABLES;
}
}
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