/*
 * Copyright (c) 2011, 2019, 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.TabObservableList;
import com.sun.javafx.util.Utils;
import javafx.animation.Animation;
import javafx.animation.Interpolator;
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.animation.Transition;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.beans.WeakInvalidationListener;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.value.WritableValue;
import javafx.collections.FXCollections;
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.StyleableObjectProperty;
import javafx.css.StyleableProperty;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Bounds;
import javafx.geometry.HPos;
import javafx.geometry.NodeOrientation;
import javafx.geometry.Point2D;
import javafx.geometry.Pos;
import javafx.geometry.Side;
import javafx.geometry.VPos;
import javafx.scene.AccessibleAction;
import javafx.scene.AccessibleAttribute;
import javafx.scene.AccessibleRole;
import javafx.scene.Node;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.Control;
import javafx.scene.control.Label;
import javafx.scene.control.MenuItem;
import javafx.scene.control.RadioMenuItem;
import javafx.scene.control.SkinBase;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.control.TabPane.TabClosingPolicy;
import javafx.scene.control.TabPane.TabDragPolicy;
import javafx.scene.control.ToggleGroup;
import javafx.scene.control.Tooltip;
import javafx.scene.effect.DropShadow;
import javafx.scene.image.ImageView;
import javafx.scene.input.ContextMenuEvent;
import javafx.scene.input.MouseButton;
import javafx.scene.input.MouseEvent;
import javafx.scene.input.ScrollEvent;
import javafx.scene.input.SwipeEvent;
import javafx.scene.layout.Pane;
import javafx.scene.layout.Region;
import javafx.scene.layout.StackPane;
import javafx.scene.shape.Rectangle;
import javafx.scene.transform.Rotate;
import javafx.util.Duration;
import javafx.util.Pair;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import javafx.css.converter.EnumConverter;
import com.sun.javafx.scene.control.behavior.TabPaneBehavior;

import static com.sun.javafx.scene.control.skin.resources.ControlResources.getString;

Default skin implementation for the TabPane control.
See Also:
Since:9
/** * Default skin implementation for the {@link TabPane} control. * * @see TabPane * @since 9 */
public class TabPaneSkin extends SkinBase<TabPane> {
* Enums * *
/*************************************************************************** * * * Enums * * * **************************************************************************/
private enum TabAnimation { NONE, GROW // In future we could add FADE, ... } private enum TabAnimationState { SHOWING, HIDING, NONE; }
* Static fields * *
/*************************************************************************** * * * Static fields * * * **************************************************************************/
static int CLOSE_BTN_SIZE = 16;
* Private fields * *
/*************************************************************************** * * * Private fields * * * **************************************************************************/
private static final double ANIMATION_SPEED = 150; private static final int SPACER = 10; private TabHeaderArea tabHeaderArea; private ObservableList<TabContentRegion> tabContentRegions; private Rectangle clipRect; private Rectangle tabHeaderAreaClipRect; private Tab selectedTab; private boolean isSelectingTab; private final TabPaneBehavior behavior; /*************************************************************************** * * * Constructors * * * **************************************************************************/
Creates a new TabPaneSkin instance, installing the necessary child nodes into the Control children list, as well as the necessary input mappings for handling key, mouse, etc events.
Params:
  • control – The control that this skin should be installed onto.
/** * Creates a new TabPaneSkin instance, installing the necessary child * nodes into the Control {@link Control#getChildren() children} list, as * well as the necessary input mappings for handling key, mouse, etc events. * * @param control The control that this skin should be installed onto. */
public TabPaneSkin(TabPane control) { super(control); // install default input map for the TabPane control this.behavior = new TabPaneBehavior(control); // control.setInputMap(behavior.getInputMap()); clipRect = new Rectangle(control.getWidth(), control.getHeight()); getSkinnable().setClip(clipRect); tabContentRegions = FXCollections.<TabContentRegion>observableArrayList(); for (Tab tab : getSkinnable().getTabs()) { addTabContent(tab); } tabHeaderAreaClipRect = new Rectangle(); tabHeaderArea = new TabHeaderArea(); tabHeaderArea.setClip(tabHeaderAreaClipRect); getChildren().add(tabHeaderArea); if (getSkinnable().getTabs().size() == 0) { tabHeaderArea.setVisible(false); } initializeTabListener(); registerChangeListener(control.getSelectionModel().selectedItemProperty(), e -> { isSelectingTab = true; selectedTab = getSkinnable().getSelectionModel().getSelectedItem(); getSkinnable().requestLayout(); }); registerChangeListener(control.sideProperty(), e -> updateTabPosition()); registerChangeListener(control.widthProperty(), e -> clipRect.setWidth(getSkinnable().getWidth())); registerChangeListener(control.heightProperty(), e -> clipRect.setHeight(getSkinnable().getHeight())); selectedTab = getSkinnable().getSelectionModel().getSelectedItem(); // Could not find the selected tab try and get the selected tab using the selected index if (selectedTab == null && getSkinnable().getSelectionModel().getSelectedIndex() != -1) { getSkinnable().getSelectionModel().select(getSkinnable().getSelectionModel().getSelectedIndex()); selectedTab = getSkinnable().getSelectionModel().getSelectedItem(); } if (selectedTab == null) { // getSelectedItem and getSelectedIndex failed select the first. getSkinnable().getSelectionModel().selectFirst(); } selectedTab = getSkinnable().getSelectionModel().getSelectedItem(); isSelectingTab = false; initializeSwipeHandlers(); }
* Properties * *
/*************************************************************************** * * * Properties * * * **************************************************************************/
private ObjectProperty<TabAnimation> openTabAnimation = new StyleableObjectProperty<TabAnimation>(TabAnimation.GROW) { @Override public CssMetaData<TabPane,TabAnimation> getCssMetaData() { return StyleableProperties.OPEN_TAB_ANIMATION; } @Override public Object getBean() { return TabPaneSkin.this; } @Override public String getName() { return "openTabAnimation"; } }; private ObjectProperty<TabAnimation> closeTabAnimation = new StyleableObjectProperty<TabAnimation>(TabAnimation.GROW) { @Override public CssMetaData<TabPane,TabAnimation> getCssMetaData() { return StyleableProperties.CLOSE_TAB_ANIMATION; } @Override public Object getBean() { return TabPaneSkin.this; } @Override public String getName() { return "closeTabAnimation"; } }; /*************************************************************************** * * * Public API * * * **************************************************************************/
{@inheritDoc}
/** {@inheritDoc} */
@Override public void dispose() { super.dispose(); if (behavior != null) { behavior.dispose(); } }
{@inheritDoc}
/** {@inheritDoc} */
@Override protected double computePrefWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) { // The TabPane can only be as wide as it widest content width. double maxw = 0.0; for (TabContentRegion contentRegion: tabContentRegions) { maxw = Math.max(maxw, snapSizeX(contentRegion.prefWidth(-1))); } final boolean isHorizontal = isHorizontal(); final double tabHeaderAreaSize = isHorizontal ? snapSizeX(tabHeaderArea.prefWidth(-1)) : snapSizeY(tabHeaderArea.prefHeight(-1)); double prefWidth = isHorizontal ? Math.max(maxw, tabHeaderAreaSize) : maxw + tabHeaderAreaSize; return snapSizeX(prefWidth) + rightInset + leftInset; }
{@inheritDoc}
/** {@inheritDoc} */
@Override protected double computePrefHeight(double width, double topInset, double rightInset, double bottomInset, double leftInset) { // The TabPane can only be as high as it highest content height. double maxh = 0.0; for (TabContentRegion contentRegion: tabContentRegions) { maxh = Math.max(maxh, snapSizeY(contentRegion.prefHeight(-1))); } final boolean isHorizontal = isHorizontal(); final double tabHeaderAreaSize = isHorizontal ? snapSizeY(tabHeaderArea.prefHeight(-1)) : snapSizeX(tabHeaderArea.prefWidth(-1)); double prefHeight = isHorizontal ? maxh + snapSizeY(tabHeaderAreaSize) : Math.max(maxh, tabHeaderAreaSize); return snapSizeY(prefHeight) + topInset + bottomInset; }
{@inheritDoc}
/** {@inheritDoc} */
@Override public double computeBaselineOffset(double topInset, double rightInset, double bottomInset, double leftInset) { Side tabPosition = getSkinnable().getSide(); if (tabPosition == Side.TOP) { return tabHeaderArea.getBaselineOffset() + topInset; } return 0; }
{@inheritDoc}
/** {@inheritDoc} */
@Override protected void layoutChildren(final double x, final double y, final double w, final double h) { TabPane tabPane = getSkinnable(); Side tabPosition = tabPane.getSide(); double headerHeight = tabPosition.isHorizontal() ? snapSizeY(tabHeaderArea.prefHeight(-1)) : snapSizeX(tabHeaderArea.prefHeight(-1)); double tabsStartX = tabPosition.equals(Side.RIGHT)? x + w - headerHeight : x; double tabsStartY = tabPosition.equals(Side.BOTTOM)? y + h - headerHeight : y; final double leftInset = snappedLeftInset(); final double topInset = snappedTopInset(); if (tabPosition == Side.TOP) { tabHeaderArea.resize(w, headerHeight); tabHeaderArea.relocate(tabsStartX, tabsStartY); tabHeaderArea.getTransforms().clear(); tabHeaderArea.getTransforms().add(new Rotate(getRotation(Side.TOP))); } else if (tabPosition == Side.BOTTOM) { tabHeaderArea.resize(w, headerHeight); tabHeaderArea.relocate(w + leftInset, tabsStartY - headerHeight); tabHeaderArea.getTransforms().clear(); tabHeaderArea.getTransforms().add(new Rotate(getRotation(Side.BOTTOM), 0, headerHeight)); } else if (tabPosition == Side.LEFT) { tabHeaderArea.resize(h, headerHeight); tabHeaderArea.relocate(tabsStartX + headerHeight, h - headerHeight + topInset); tabHeaderArea.getTransforms().clear(); tabHeaderArea.getTransforms().add(new Rotate(getRotation(Side.LEFT), 0, headerHeight)); } else if (tabPosition == Side.RIGHT) { tabHeaderArea.resize(h, headerHeight); tabHeaderArea.relocate(tabsStartX, y - headerHeight); tabHeaderArea.getTransforms().clear(); tabHeaderArea.getTransforms().add(new Rotate(getRotation(Side.RIGHT), 0, headerHeight)); } tabHeaderAreaClipRect.setX(0); tabHeaderAreaClipRect.setY(0); if (isHorizontal()) { tabHeaderAreaClipRect.setWidth(w); } else { tabHeaderAreaClipRect.setWidth(h); } tabHeaderAreaClipRect.setHeight(headerHeight); // ================================== // position the tab content for the selected tab only // ================================== // if the tabs are on the left, the content needs to be indented double contentStartX = 0; double contentStartY = 0; if (tabPosition == Side.TOP) { contentStartX = x; contentStartY = y + headerHeight; if (isFloatingStyleClass()) { // This is to hide the top border content contentStartY -= 1; } } else if (tabPosition == Side.BOTTOM) { contentStartX = x; contentStartY = y + topInset; if (isFloatingStyleClass()) { // This is to hide the bottom border content contentStartY = 1 + topInset; } } else if (tabPosition == Side.LEFT) { contentStartX = x + headerHeight; contentStartY = y; if (isFloatingStyleClass()) { // This is to hide the left border content contentStartX -= 1; } } else if (tabPosition == Side.RIGHT) { contentStartX = x + leftInset; contentStartY = y; if (isFloatingStyleClass()) { // This is to hide the right border content contentStartX = 1 + leftInset; } } double contentWidth = w - (isHorizontal() ? 0 : headerHeight); double contentHeight = h - (isHorizontal() ? headerHeight: 0); for (int i = 0, max = tabContentRegions.size(); i < max; i++) { TabContentRegion tabContent = tabContentRegions.get(i); tabContent.setAlignment(Pos.TOP_LEFT); if (tabContent.getClip() != null) { ((Rectangle)tabContent.getClip()).setWidth(contentWidth); ((Rectangle)tabContent.getClip()).setHeight(contentHeight); } // we need to size all tabs, even if they aren't visible. For example, // see RT-29167 tabContent.resize(contentWidth, contentHeight); tabContent.relocate(contentStartX, contentStartY); } }
* Private implementation * *
/*************************************************************************** * * * Private implementation * * * **************************************************************************/
private static int getRotation(Side pos) { switch (pos) { case TOP: return 0; case BOTTOM: return 180; case LEFT: return -90; case RIGHT: return 90; default: return 0; } }
VERY HACKY - this lets us 'duplicate' Label and ImageView nodes to be used in a Tab and the tabs menu at the same time.
/** * VERY HACKY - this lets us 'duplicate' Label and ImageView nodes to be used in a * Tab and the tabs menu at the same time. */
private static Node clone(Node n) { if (n == null) { return null; } if (n instanceof ImageView) { ImageView iv = (ImageView) n; ImageView imageview = new ImageView(); imageview.imageProperty().bind(iv.imageProperty()); return imageview; } if (n instanceof Label) { Label l = (Label)n; Label label = new Label(l.getText(), clone(l.getGraphic())); label.textProperty().bind(l.textProperty()); return label; } return null; } private void removeTabs(List<? extends Tab> removedList) { for (final Tab tab : removedList) { stopCurrentAnimation(tab); // Animate the tab removal final TabHeaderSkin tabRegion = tabHeaderArea.getTabHeaderSkin(tab); if (tabRegion != null) { tabRegion.isClosing = true; tabRegion.removeListeners(tab); removeTabContent(tab); EventHandler<ActionEvent> cleanup = ae -> { tabRegion.animationState = TabAnimationState.NONE; tabHeaderArea.removeTab(tab); tabHeaderArea.requestLayout(); if (getSkinnable().getTabs().isEmpty()) { tabHeaderArea.setVisible(false); } }; if (closeTabAnimation.get() == TabAnimation.GROW) { tabRegion.animationState = TabAnimationState.HIDING; Timeline closedTabTimeline = tabRegion.currentAnimation = createTimeline(tabRegion, Duration.millis(ANIMATION_SPEED), 0.0F, cleanup); closedTabTimeline.play(); } else { cleanup.handle(null); } } } } private void stopCurrentAnimation(Tab tab) { final TabHeaderSkin tabRegion = tabHeaderArea.getTabHeaderSkin(tab); if (tabRegion != null) { // Execute the code immediately, don't wait for the animation to finish. Timeline timeline = tabRegion.currentAnimation; if (timeline != null && timeline.getStatus() == Animation.Status.RUNNING) { timeline.getOnFinished().handle(null); timeline.stop(); tabRegion.currentAnimation = null; } } } private void addTabs(List<? extends Tab> addedList, int from) { int i = 0; // RT-39984: check if any other tabs are animating - they must be completed first. List<Node> headers = new ArrayList<>(tabHeaderArea.headersRegion.getChildren()); for (Node n : headers) { TabHeaderSkin header = (TabHeaderSkin) n; if (header.animationState == TabAnimationState.HIDING) { stopCurrentAnimation(header.tab); } } // end of fix for RT-39984 for (final Tab tab : addedList) { stopCurrentAnimation(tab); // Note that this must happen before addTab() call below // A new tab was added - animate it out if (!tabHeaderArea.isVisible()) { tabHeaderArea.setVisible(true); } int index = from + i++; tabHeaderArea.addTab(tab, index); addTabContent(tab); final TabHeaderSkin tabRegion = tabHeaderArea.getTabHeaderSkin(tab); if (tabRegion != null) { if (openTabAnimation.get() == TabAnimation.GROW) { tabRegion.animationState = TabAnimationState.SHOWING; tabRegion.animationTransition.setValue(0.0); tabRegion.setVisible(true); tabRegion.currentAnimation = createTimeline(tabRegion, Duration.millis(ANIMATION_SPEED), 1.0, event -> { tabRegion.animationState = TabAnimationState.NONE; tabRegion.setVisible(true); tabRegion.inner.requestLayout(); }); tabRegion.currentAnimation.play(); } else { tabRegion.setVisible(true); tabRegion.inner.requestLayout(); } } } } private void initializeTabListener() { getSkinnable().getTabs().addListener((ListChangeListener<Tab>) c -> { List<Tab> tabsToRemove = new ArrayList<>(); List<Tab> tabsToAdd = new ArrayList<>(); int insertPos = -1; while (c.next()) { if (c.wasPermutated()) { if (dragState != DragState.REORDER) { TabPane tabPane = getSkinnable(); List<Tab> tabs = tabPane.getTabs(); // tabs sorted : create list of permutated tabs. // clear selection, set tab animation to NONE // remove permutated tabs, add them back in correct order. // restore old selection, and old tab animation states. int size = c.getTo() - c.getFrom(); Tab selTab = tabPane.getSelectionModel().getSelectedItem(); List<Tab> permutatedTabs = new ArrayList<Tab>(size); getSkinnable().getSelectionModel().clearSelection(); // save and set tab animation to none - as it is not a good idea // to animate on the same data for open and close. TabAnimation prevOpenAnimation = openTabAnimation.get(); TabAnimation prevCloseAnimation = closeTabAnimation.get(); openTabAnimation.set(TabAnimation.NONE); closeTabAnimation.set(TabAnimation.NONE); for (int i = c.getFrom(); i < c.getTo(); i++) { permutatedTabs.add(tabs.get(i)); } removeTabs(permutatedTabs); addTabs(permutatedTabs, c.getFrom()); openTabAnimation.set(prevOpenAnimation); closeTabAnimation.set(prevCloseAnimation); getSkinnable().getSelectionModel().select(selTab); } } if (c.wasRemoved()) { tabsToRemove.addAll(c.getRemoved()); } if (c.wasAdded()) { tabsToAdd.addAll(c.getAddedSubList()); insertPos = c.getFrom(); } } // now only remove the tabs that are not in the tabsToAdd list tabsToRemove.removeAll(tabsToAdd); removeTabs(tabsToRemove); // and add in any new tabs (that we don't already have showing) List<Pair<Integer, TabHeaderSkin>> headersToMove = new ArrayList(); if (!tabsToAdd.isEmpty()) { for (TabContentRegion tabContentRegion : tabContentRegions) { Tab tab = tabContentRegion.getTab(); TabHeaderSkin tabHeader = tabHeaderArea.getTabHeaderSkin(tab); if (!tabHeader.isClosing && tabsToAdd.contains(tabContentRegion.getTab())) { tabsToAdd.remove(tabContentRegion.getTab()); // If a tab is removed and added back at the same time, // then we must ensure that the index of tabHeader in // headersRegion is same as index of tab in getTabs(). int tabIndex = getSkinnable().getTabs().indexOf(tab); int tabHeaderIndex = tabHeaderArea.headersRegion.getChildren().indexOf(tabHeader); if (tabIndex != tabHeaderIndex) { headersToMove.add(new Pair(tabIndex, tabHeader)); } } } addTabs(tabsToAdd, insertPos == -1 ? tabContentRegions.size() : insertPos); for (Pair<Integer, TabHeaderSkin> move : headersToMove) { tabHeaderArea.moveTab(move.getKey(), move.getValue()); } } // Fix for RT-34692 getSkinnable().requestLayout(); }); } private void addTabContent(Tab tab) { TabContentRegion tabContentRegion = new TabContentRegion(tab); tabContentRegion.setClip(new Rectangle()); tabContentRegions.add(tabContentRegion); // We want the tab content to always sit below the tab headers getChildren().add(0, tabContentRegion); } private void removeTabContent(Tab tab) { for (TabContentRegion contentRegion : tabContentRegions) { if (contentRegion.getTab().equals(tab)) { contentRegion.removeListeners(tab); getChildren().remove(contentRegion); tabContentRegions.remove(contentRegion); break; } } } private void updateTabPosition() { tabHeaderArea.setScrollOffset(0.0F); getSkinnable().applyCss(); getSkinnable().requestLayout(); } private Timeline createTimeline(final TabHeaderSkin tabRegion, final Duration duration, final double endValue, final EventHandler<ActionEvent> func) { Timeline timeline = new Timeline(); timeline.setCycleCount(1); KeyValue keyValue = new KeyValue(tabRegion.animationTransition, endValue, Interpolator.LINEAR); timeline.getKeyFrames().clear(); timeline.getKeyFrames().add(new KeyFrame(duration, keyValue)); timeline.setOnFinished(func); return timeline; } private boolean isHorizontal() { Side tabPosition = getSkinnable().getSide(); return Side.TOP.equals(tabPosition) || Side.BOTTOM.equals(tabPosition); } private void initializeSwipeHandlers() { if (Properties.IS_TOUCH_SUPPORTED) { getSkinnable().addEventHandler(SwipeEvent.SWIPE_LEFT, t -> { behavior.selectNextTab(); }); getSkinnable().addEventHandler(SwipeEvent.SWIPE_RIGHT, t -> { behavior.selectPreviousTab(); }); } } //TODO need to cache this. private boolean isFloatingStyleClass() { return getSkinnable().getStyleClass().contains(TabPane.STYLE_CLASS_FLOATING); }
* CSS * *
/*************************************************************************** * * * CSS * * * **************************************************************************/
/* * Super-lazy instantiation pattern from Bill Pugh. */ private static class StyleableProperties { private static final List<CssMetaData<? extends Styleable, ?>> STYLEABLES; private final static CssMetaData<TabPane,TabAnimation> OPEN_TAB_ANIMATION = new CssMetaData<TabPane, TabPaneSkin.TabAnimation>("-fx-open-tab-animation", new EnumConverter<TabAnimation>(TabAnimation.class), TabAnimation.GROW) { @Override public boolean isSettable(TabPane node) { return true; } @Override public StyleableProperty<TabAnimation> getStyleableProperty(TabPane node) { TabPaneSkin skin = (TabPaneSkin) node.getSkin(); return (StyleableProperty<TabAnimation>)(WritableValue<TabAnimation>)skin.openTabAnimation; } }; private final static CssMetaData<TabPane,TabAnimation> CLOSE_TAB_ANIMATION = new CssMetaData<TabPane, TabPaneSkin.TabAnimation>("-fx-close-tab-animation", new EnumConverter<TabAnimation>(TabAnimation.class), TabAnimation.GROW) { @Override public boolean isSettable(TabPane node) { return true; } @Override public StyleableProperty<TabAnimation> getStyleableProperty(TabPane node) { TabPaneSkin skin = (TabPaneSkin) node.getSkin(); return (StyleableProperty<TabAnimation>)(WritableValue<TabAnimation>)skin.closeTabAnimation; } }; static { final List<CssMetaData<? extends Styleable, ?>> styleables = new ArrayList<CssMetaData<? extends Styleable, ?>>(SkinBase.getClassCssMetaData()); styleables.add(OPEN_TAB_ANIMATION); styleables.add(CLOSE_TAB_ANIMATION); STYLEABLES = Collections.unmodifiableList(styleables); } }
Returns the CssMetaData associated with this class, which may include the CssMetaData of its superclasses.
Returns:the CssMetaData associated with this class, which may include the CssMetaData of its superclasses
/** * 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<CssMetaData<? extends Styleable, ?>> getClassCssMetaData() { return StyleableProperties.STYLEABLES; }
{@inheritDoc}
/** * {@inheritDoc} */
@Override public List<CssMetaData<? extends Styleable, ?>> getCssMetaData() { return getClassCssMetaData(); } /*************************************************************************** * * * Support classes * * * **************************************************************************/
TabHeaderArea: Area responsible for painting all tabs
/************************************************************************** * * TabHeaderArea: Area responsible for painting all tabs * **************************************************************************/
class TabHeaderArea extends StackPane { private Rectangle headerClip; private StackPane headersRegion; private StackPane headerBackground; private TabControlButtons controlButtons; private boolean measureClosingTabs = false; private double scrollOffset; public TabHeaderArea() { getStyleClass().setAll("tab-header-area"); setManaged(false); final TabPane tabPane = getSkinnable(); headerClip = new Rectangle(); headersRegion = new StackPane() { @Override protected double computePrefWidth(double height) { double width = 0.0F; for (Node child : getChildren()) { TabHeaderSkin tabHeaderSkin = (TabHeaderSkin)child; if (tabHeaderSkin.isVisible() && (measureClosingTabs || ! tabHeaderSkin.isClosing)) { width += tabHeaderSkin.prefWidth(height); } } return snapSize(width) + snappedLeftInset() + snappedRightInset(); } @Override protected double computePrefHeight(double width) { double height = 0.0F; for (Node child : getChildren()) { TabHeaderSkin tabHeaderSkin = (TabHeaderSkin)child; height = Math.max(height, tabHeaderSkin.prefHeight(width)); } return snapSize(height) + snappedTopInset() + snappedBottomInset(); } @Override protected void layoutChildren() { if (tabsFit()) { setScrollOffset(0.0); } else { if (isSelectingTab) { ensureSelectedTabIsVisible(); } else { validateScrollOffset(); } } isSelectingTab = false; Side tabPosition = getSkinnable().getSide(); double tabBackgroundHeight = snapSize(prefHeight(-1)); double tabX = (tabPosition.equals(Side.LEFT) || tabPosition.equals(Side.BOTTOM)) ? snapSize(getWidth()) - getScrollOffset() : getScrollOffset(); updateHeaderClip(); for (Node node : getChildren()) { TabHeaderSkin tabHeader = (TabHeaderSkin)node; // size and position the header relative to the other headers double tabHeaderPrefWidth = snapSize(tabHeader.prefWidth(-1) * tabHeader.animationTransition.get()); double tabHeaderPrefHeight = snapSize(tabHeader.prefHeight(-1)); tabHeader.resize(tabHeaderPrefWidth, tabHeaderPrefHeight); // This ensures that the tabs are located in the correct position // when there are tabs of differing heights. double startY = tabPosition.equals(Side.BOTTOM) ? 0 : tabBackgroundHeight - tabHeaderPrefHeight - snappedBottomInset(); if (tabPosition.equals(Side.LEFT) || tabPosition.equals(Side.BOTTOM)) { // build from the right tabX -= tabHeaderPrefWidth; if (dragState != DragState.REORDER || (tabHeader != dragTabHeader && tabHeader != dropAnimHeader)) { tabHeader.relocate(tabX, startY); } } else { // build from the left if (dragState != DragState.REORDER || (tabHeader != dragTabHeader && tabHeader != dropAnimHeader)) { tabHeader.relocate(tabX, startY); } tabX += tabHeaderPrefWidth; } } } }; headersRegion.getStyleClass().setAll("headers-region"); headersRegion.setClip(headerClip); setupReordering(headersRegion); headerBackground = new StackPane(); headerBackground.getStyleClass().setAll("tab-header-background"); int i = 0; for (Tab tab: tabPane.getTabs()) { addTab(tab, i++); } controlButtons = new TabControlButtons(); controlButtons.setVisible(false); if (controlButtons.isVisible()) { controlButtons.setVisible(true); } getChildren().addAll(headerBackground, headersRegion, controlButtons); // support for mouse scroll of header area (for when the tabs exceed // the available space). // Scrolling the mouse wheel downwards results in the tabs scrolling left (i.e. exposing the right-most tabs) // Scrolling the mouse wheel upwards results in the tabs scrolling right (i.e. exposing th left-most tabs) addEventHandler(ScrollEvent.SCROLL, (ScrollEvent e) -> { Side side = getSkinnable().getSide(); side = side == null ? Side.TOP : side; switch (side) { default: case TOP: case BOTTOM: setScrollOffset(scrollOffset + e.getDeltaY()); break; case LEFT: case RIGHT: setScrollOffset(scrollOffset - e.getDeltaY()); break; } }); } private void updateHeaderClip() { Side tabPosition = getSkinnable().getSide(); double x = 0; double y = 0; double clipWidth = 0; double clipHeight = 0; double maxWidth = 0; double shadowRadius = 0; double clipOffset = firstTabIndent(); double controlButtonPrefWidth = snapSize(controlButtons.prefWidth(-1)); measureClosingTabs = true; double headersPrefWidth = snapSize(headersRegion.prefWidth(-1)); measureClosingTabs = false; double headersPrefHeight = snapSize(headersRegion.prefHeight(-1)); // Add the spacer if isShowTabsMenu is true. if (controlButtonPrefWidth > 0) { controlButtonPrefWidth = controlButtonPrefWidth + SPACER; } if (headersRegion.getEffect() instanceof DropShadow) { DropShadow shadow = (DropShadow)headersRegion.getEffect(); shadowRadius = shadow.getRadius(); } maxWidth = snapSize(getWidth()) - controlButtonPrefWidth - clipOffset; if (tabPosition.equals(Side.LEFT) || tabPosition.equals(Side.BOTTOM)) { if (headersPrefWidth < maxWidth) { clipWidth = headersPrefWidth + shadowRadius; } else { x = headersPrefWidth - maxWidth; clipWidth = maxWidth + shadowRadius; } clipHeight = headersPrefHeight; } else { // If x = 0 the header region's drop shadow is clipped. x = -shadowRadius; clipWidth = (headersPrefWidth < maxWidth ? headersPrefWidth : maxWidth) + shadowRadius; clipHeight = headersPrefHeight; } headerClip.setX(x); headerClip.setY(y); headerClip.setWidth(clipWidth); headerClip.setHeight(clipHeight); } private void addTab(Tab tab, int addToIndex) { TabHeaderSkin tabHeaderSkin = new TabHeaderSkin(tab); headersRegion.getChildren().add(addToIndex, tabHeaderSkin); } private void removeTab(Tab tab) { TabHeaderSkin tabHeaderSkin = getTabHeaderSkin(tab); if (tabHeaderSkin != null) { headersRegion.getChildren().remove(tabHeaderSkin); } } private void moveTab(int moveToIndex, TabHeaderSkin tabHeaderSkin) { headersRegion.getChildren().remove(tabHeaderSkin); headersRegion.getChildren().add(moveToIndex, tabHeaderSkin); } private TabHeaderSkin getTabHeaderSkin(Tab tab) { for (Node child: headersRegion.getChildren()) { TabHeaderSkin tabHeaderSkin = (TabHeaderSkin)child; if (tabHeaderSkin.getTab().equals(tab)) { return tabHeaderSkin; } } return null; } private boolean tabsFit() { double headerPrefWidth = snapSize(headersRegion.prefWidth(-1)); double controlTabWidth = snapSize(controlButtons.prefWidth(-1)); double visibleWidth = headerPrefWidth + controlTabWidth + firstTabIndent() + SPACER; return visibleWidth < getWidth(); } private void ensureSelectedTabIsVisible() { // work out the visible width of the tab header double tabPaneWidth = snapSize(isHorizontal() ? getSkinnable().getWidth() : getSkinnable().getHeight()); double controlTabWidth = snapSize(controlButtons.getWidth()); double visibleWidth = tabPaneWidth - controlTabWidth - firstTabIndent() - SPACER; // and get where the selected tab is in the header area double offset = 0.0; double selectedTabOffset = 0.0; double selectedTabWidth = 0.0; for (Node node : headersRegion.getChildren()) { TabHeaderSkin tabHeader = (TabHeaderSkin)node; double tabHeaderPrefWidth = snapSize(tabHeader.prefWidth(-1)); if (selectedTab != null && selectedTab.equals(tabHeader.getTab())) { selectedTabOffset = offset; selectedTabWidth = tabHeaderPrefWidth; } offset += tabHeaderPrefWidth; } final double scrollOffset = getScrollOffset(); final double selectedTabStartX = selectedTabOffset; final double selectedTabEndX = selectedTabOffset + selectedTabWidth; final double visibleAreaEndX = visibleWidth; if (selectedTabStartX < -scrollOffset) { setScrollOffset(-selectedTabStartX); } else if (selectedTabEndX > (visibleAreaEndX - scrollOffset)) { setScrollOffset(visibleAreaEndX - selectedTabEndX); } } public double getScrollOffset() { return scrollOffset; } private void validateScrollOffset() { setScrollOffset(getScrollOffset()); } private void setScrollOffset(double newScrollOffset) { // work out the visible width of the tab header double tabPaneWidth = snapSize(isHorizontal() ? getSkinnable().getWidth() : getSkinnable().getHeight()); double controlTabWidth = snapSize(controlButtons.getWidth()); double visibleWidth = tabPaneWidth - controlTabWidth - firstTabIndent() - SPACER; // measure the width of all tabs double offset = 0.0; for (Node node : headersRegion.getChildren()) { TabHeaderSkin tabHeader = (TabHeaderSkin)node; double tabHeaderPrefWidth = snapSize(tabHeader.prefWidth(-1)); offset += tabHeaderPrefWidth; } double actualNewScrollOffset; if ((visibleWidth - newScrollOffset) > offset && newScrollOffset < 0) { // need to make sure the right-most tab is attached to the // right-hand side of the tab header (e.g. if the tab header area width // is expanded), and if it isn't modify the scroll offset to bring // it into line. See RT-35194 for a test case. actualNewScrollOffset = visibleWidth - offset; } else if (newScrollOffset > 0) { // need to prevent the left-most tab from becoming detached // from the left-hand side of the tab header. actualNewScrollOffset = 0; } else { actualNewScrollOffset = newScrollOffset; } if (Math.abs(actualNewScrollOffset - scrollOffset) > 0.001) { scrollOffset = actualNewScrollOffset; headersRegion.requestLayout(); } } private double firstTabIndent() { switch (getSkinnable().getSide()) { case TOP: case BOTTOM: return snappedLeftInset(); case RIGHT: case LEFT: return snappedTopInset(); default: return 0; } } @Override protected double computePrefWidth(double height) { double padding = isHorizontal() ? snappedLeftInset() + snappedRightInset() : snappedTopInset() + snappedBottomInset(); return snapSize(headersRegion.prefWidth(height)) + controlButtons.prefWidth(height) + firstTabIndent() + SPACER + padding; } @Override protected double computePrefHeight(double width) { double padding = isHorizontal() ? snappedTopInset() + snappedBottomInset() : snappedLeftInset() + snappedRightInset(); return snapSize(headersRegion.prefHeight(-1)) + padding; } @Override public double getBaselineOffset() { if (getSkinnable().getSide() == Side.TOP) { return headersRegion.getBaselineOffset() + snappedTopInset(); } return 0; } @Override protected void layoutChildren() { final double leftInset = snappedLeftInset(); final double rightInset = snappedRightInset(); final double topInset = snappedTopInset(); final double bottomInset = snappedBottomInset(); double w = snapSize(getWidth()) - (isHorizontal() ? leftInset + rightInset : topInset + bottomInset); double h = snapSize(getHeight()) - (isHorizontal() ? topInset + bottomInset : leftInset + rightInset); double tabBackgroundHeight = snapSize(prefHeight(-1)); double headersPrefWidth = snapSize(headersRegion.prefWidth(-1)); double headersPrefHeight = snapSize(headersRegion.prefHeight(-1)); controlButtons.showTabsMenu(! tabsFit()); updateHeaderClip(); headersRegion.requestLayout(); // RESIZE CONTROL BUTTONS double btnWidth = snapSize(controlButtons.prefWidth(-1)); final double btnHeight = controlButtons.prefHeight(btnWidth); controlButtons.resize(btnWidth, btnHeight); // POSITION TABS headersRegion.resize(headersPrefWidth, headersPrefHeight); if (isFloatingStyleClass()) { headerBackground.setVisible(false); } else { headerBackground.resize(snapSize(getWidth()), snapSize(getHeight())); headerBackground.setVisible(true); } double startX = 0; double startY = 0; double controlStartX = 0; double controlStartY = 0; Side tabPosition = getSkinnable().getSide(); if (tabPosition.equals(Side.TOP)) { startX = leftInset; startY = tabBackgroundHeight - headersPrefHeight - bottomInset; controlStartX = w - btnWidth + leftInset; controlStartY = snapSize(getHeight()) - btnHeight - bottomInset; } else if (tabPosition.equals(Side.RIGHT)) { startX = topInset; startY = tabBackgroundHeight - headersPrefHeight - leftInset; controlStartX = w - btnWidth + topInset; controlStartY = snapSize(getHeight()) - btnHeight - leftInset; } else if (tabPosition.equals(Side.BOTTOM)) { startX = snapSize(getWidth()) - headersPrefWidth - leftInset; startY = tabBackgroundHeight - headersPrefHeight - topInset; controlStartX = rightInset; controlStartY = snapSize(getHeight()) - btnHeight - topInset; } else if (tabPosition.equals(Side.LEFT)) { startX = snapSize(getWidth()) - headersPrefWidth - topInset; startY = tabBackgroundHeight - headersPrefHeight - rightInset; controlStartX = leftInset; controlStartY = snapSize(getHeight()) - btnHeight - rightInset; } if (headerBackground.isVisible()) { positionInArea(headerBackground, 0, 0, snapSize(getWidth()), snapSize(getHeight()), /*baseline ignored*/0, HPos.CENTER, VPos.CENTER); } positionInArea(headersRegion, startX, startY, w, h, /*baseline ignored*/0, HPos.LEFT, VPos.CENTER); positionInArea(controlButtons, controlStartX, controlStartY, btnWidth, btnHeight, /*baseline ignored*/0, HPos.CENTER, VPos.CENTER); } } /* End TabHeaderArea */
TabHeaderSkin: skin for each tab
/************************************************************************** * * TabHeaderSkin: skin for each tab * **************************************************************************/
class TabHeaderSkin extends StackPane { private final Tab tab; public Tab getTab() { return tab; } private Label label; private StackPane closeBtn; private StackPane inner; private Tooltip oldTooltip; private Tooltip tooltip; private Rectangle clip; private boolean isClosing = false; private LambdaMultiplePropertyChangeListenerHandler listener = new LambdaMultiplePropertyChangeListenerHandler(); private final ListChangeListener<String> styleClassListener = new ListChangeListener<String>() { @Override public void onChanged(Change<? extends String> c) { getStyleClass().setAll(tab.getStyleClass()); } }; private final WeakListChangeListener<String> weakStyleClassListener = new WeakListChangeListener<>(styleClassListener); public TabHeaderSkin(final Tab tab) { getStyleClass().setAll(tab.getStyleClass()); setId(tab.getId()); setStyle(tab.getStyle()); setAccessibleRole(AccessibleRole.TAB_ITEM); setViewOrder(1); this.tab = tab; clip = new Rectangle(); setClip(clip); label = new Label(tab.getText(), tab.getGraphic()); label.getStyleClass().setAll("tab-label"); closeBtn = new StackPane() { @Override protected double computePrefWidth(double h) { return CLOSE_BTN_SIZE; } @Override protected double computePrefHeight(double w) { return CLOSE_BTN_SIZE; } @Override public void executeAccessibleAction(AccessibleAction action, Object... parameters) { switch (action) { case FIRE: { Tab tab = getTab(); if (behavior.canCloseTab(tab)) { behavior.closeTab(tab); setOnMousePressed(null); } break; } default: super.executeAccessibleAction(action, parameters); } } }; closeBtn.setAccessibleRole(AccessibleRole.BUTTON); closeBtn.setAccessibleText(getString("Accessibility.title.TabPane.CloseButton")); closeBtn.getStyleClass().setAll("tab-close-button"); closeBtn.setOnMousePressed(new EventHandler<MouseEvent>() { @Override public void handle(MouseEvent me) { Tab tab = getTab(); if (me.getButton().equals(MouseButton.PRIMARY) && behavior.canCloseTab(tab)) { behavior.closeTab(tab); setOnMousePressed(null); me.consume(); } } }); updateGraphicRotation(); final Region focusIndicator = new Region(); focusIndicator.setMouseTransparent(true); focusIndicator.getStyleClass().add("focus-indicator"); inner = new StackPane() { @Override protected void layoutChildren() { final TabPane skinnable = getSkinnable(); final double paddingTop = snappedTopInset(); final double paddingRight = snappedRightInset(); final double paddingBottom = snappedBottomInset(); final double paddingLeft = snappedLeftInset(); final double w = getWidth() - (paddingLeft + paddingRight); final double h = getHeight() - (paddingTop + paddingBottom); final double prefLabelWidth = snapSize(label.prefWidth(-1)); final double prefLabelHeight = snapSize(label.prefHeight(-1)); final double closeBtnWidth = showCloseButton() ? snapSize(closeBtn.prefWidth(-1)) : 0; final double closeBtnHeight = showCloseButton() ? snapSize(closeBtn.prefHeight(-1)) : 0; final double minWidth = snapSize(skinnable.getTabMinWidth()); final double maxWidth = snapSize(skinnable.getTabMaxWidth()); final double maxHeight = snapSize(skinnable.getTabMaxHeight()); double labelAreaWidth = prefLabelWidth; double labelWidth = prefLabelWidth; double labelHeight = prefLabelHeight; final double childrenWidth = labelAreaWidth + closeBtnWidth; final double childrenHeight = Math.max(labelHeight, closeBtnHeight); if (childrenWidth > maxWidth && maxWidth != Double.MAX_VALUE) { labelAreaWidth = maxWidth - closeBtnWidth; labelWidth = maxWidth - closeBtnWidth; } else if (childrenWidth < minWidth) { labelAreaWidth = minWidth - closeBtnWidth; } if (childrenHeight > maxHeight && maxHeight != Double.MAX_VALUE) { labelHeight = maxHeight; } if (animationState != TabAnimationState.NONE) { // if (prefWidth.getValue() < labelAreaWidth) { // labelAreaWidth = prefWidth.getValue(); // } labelAreaWidth *= animationTransition.get(); closeBtn.setVisible(false); } else { closeBtn.setVisible(showCloseButton()); } label.resize(labelWidth, labelHeight); double labelStartX = paddingLeft; // If maxWidth is less than Double.MAX_VALUE, the user has // clamped the max width, but we should // position the close button at the end of the tab, // which may not necessarily be the entire width of the // provided max width. double closeBtnStartX = (maxWidth < Double.MAX_VALUE ? Math.min(w, maxWidth) : w) - paddingRight - closeBtnWidth; positionInArea(label, labelStartX, paddingTop, labelAreaWidth, h, /*baseline ignored*/0, HPos.CENTER, VPos.CENTER); if (closeBtn.isVisible()) { closeBtn.resize(closeBtnWidth, closeBtnHeight); positionInArea(closeBtn, closeBtnStartX, paddingTop, closeBtnWidth, h, /*baseline ignored*/0, HPos.CENTER, VPos.CENTER); } // Magic numbers regretfully introduced for RT-28944 (so that // the focus rect appears as expected on Windows and Mac). // In short we use the vPadding to shift the focus rect down // into the content area (whereas previously it was being clipped // on Windows, whilst it still looked fine on Mac). In the // future we may want to improve this code to remove the // magic number. Similarly, the hPadding differs on Mac. final int vPadding = Utils.isMac() ? 2 : 3; final int hPadding = Utils.isMac() ? 2 : 1; focusIndicator.resizeRelocate( paddingLeft - hPadding, paddingTop + vPadding, w + 2 * hPadding, h - 2 * vPadding); } }; inner.getStyleClass().add("tab-container"); inner.setRotate(getSkinnable().getSide().equals(Side.BOTTOM) ? 180.0F : 0.0F); inner.getChildren().addAll(label, closeBtn, focusIndicator); getChildren().addAll(inner); tooltip = tab.getTooltip(); if (tooltip != null) { Tooltip.install(this, tooltip); oldTooltip = tooltip; } listener.registerChangeListener(tab.closableProperty(), e -> { inner.requestLayout(); requestLayout(); }); listener.registerChangeListener(tab.selectedProperty(), e -> { pseudoClassStateChanged(SELECTED_PSEUDOCLASS_STATE, tab.isSelected()); // Need to request a layout pass for inner because if the width // and height didn't not change the label or close button may have // changed. inner.requestLayout(); requestLayout(); }); listener.registerChangeListener(tab.textProperty(),e -> label.setText(getTab().getText())); listener.registerChangeListener(tab.graphicProperty(), e -> label.setGraphic(getTab().getGraphic())); listener.registerChangeListener(tab.tooltipProperty(), e -> { // uninstall the old tooltip if (oldTooltip != null) { Tooltip.uninstall(this, oldTooltip); } tooltip = tab.getTooltip(); if (tooltip != null) { // install new tooltip and save as old tooltip. Tooltip.install(this, tooltip); oldTooltip = tooltip; } }); listener.registerChangeListener(tab.disabledProperty(), e -> { updateTabDisabledState(); }); listener.registerChangeListener(tab.getTabPane().disabledProperty(), e -> { updateTabDisabledState(); }); listener.registerChangeListener(tab.styleProperty(), e -> setStyle(tab.getStyle())); tab.getStyleClass().addListener(weakStyleClassListener); listener.registerChangeListener(getSkinnable().tabClosingPolicyProperty(),e -> { inner.requestLayout(); requestLayout(); }); listener.registerChangeListener(getSkinnable().sideProperty(),e -> { final Side side = getSkinnable().getSide(); pseudoClassStateChanged(TOP_PSEUDOCLASS_STATE, (side == Side.TOP)); pseudoClassStateChanged(RIGHT_PSEUDOCLASS_STATE, (side == Side.RIGHT)); pseudoClassStateChanged(BOTTOM_PSEUDOCLASS_STATE, (side == Side.BOTTOM)); pseudoClassStateChanged(LEFT_PSEUDOCLASS_STATE, (side == Side.LEFT)); inner.setRotate(side == Side.BOTTOM ? 180.0F : 0.0F); if (getSkinnable().isRotateGraphic()) { updateGraphicRotation(); } }); listener.registerChangeListener(getSkinnable().rotateGraphicProperty(), e -> updateGraphicRotation()); listener.registerChangeListener(getSkinnable().tabMinWidthProperty(), e -> { requestLayout(); getSkinnable().requestLayout(); }); listener.registerChangeListener(getSkinnable().tabMaxWidthProperty(), e -> { requestLayout(); getSkinnable().requestLayout(); }); listener.registerChangeListener(getSkinnable().tabMinHeightProperty(), e -> { requestLayout(); getSkinnable().requestLayout(); }); listener.registerChangeListener(getSkinnable().tabMaxHeightProperty(), e -> { requestLayout(); getSkinnable().requestLayout(); }); getProperties().put(Tab.class, tab); getProperties().put(ContextMenu.class, tab.getContextMenu()); setOnContextMenuRequested((ContextMenuEvent me) -> { if (getTab().getContextMenu() != null) { getTab().getContextMenu().show(inner, me.getScreenX(), me.getScreenY()); me.consume(); } }); setOnMousePressed(new EventHandler<MouseEvent>() { @Override public void handle(MouseEvent me) { Tab tab = getTab(); if (tab.isDisable()) { return; } if (me.getButton().equals(MouseButton.MIDDLE) || me.getButton().equals(MouseButton.PRIMARY)) { if (tab.getContextMenu() != null && tab.getContextMenu().isShowing()) { tab.getContextMenu().hide(); } } if (me.getButton().equals(MouseButton.MIDDLE)) { if (showCloseButton()) { if (behavior.canCloseTab(tab)) { removeListeners(tab); behavior.closeTab(tab); } } } else if (me.getButton().equals(MouseButton.PRIMARY)) { behavior.selectTab(tab); } } }); // initialize pseudo-class state pseudoClassStateChanged(SELECTED_PSEUDOCLASS_STATE, tab.isSelected()); pseudoClassStateChanged(DISABLED_PSEUDOCLASS_STATE, tab.isDisabled()); final Side side = getSkinnable().getSide(); pseudoClassStateChanged(TOP_PSEUDOCLASS_STATE, (side == Side.TOP)); pseudoClassStateChanged(RIGHT_PSEUDOCLASS_STATE, (side == Side.RIGHT)); pseudoClassStateChanged(BOTTOM_PSEUDOCLASS_STATE, (side == Side.BOTTOM)); pseudoClassStateChanged(LEFT_PSEUDOCLASS_STATE, (side == Side.LEFT)); } private void updateTabDisabledState() { pseudoClassStateChanged(DISABLED_PSEUDOCLASS_STATE, tab.isDisabled()); inner.requestLayout(); requestLayout(); } private void updateGraphicRotation() { if (label.getGraphic() != null) { label.getGraphic().setRotate(getSkinnable().isRotateGraphic() ? 0.0F : (getSkinnable().getSide().equals(Side.RIGHT) ? -90.0F : (getSkinnable().getSide().equals(Side.LEFT) ? 90.0F : 0.0F))); } } private boolean showCloseButton() { return tab.isClosable() && (getSkinnable().getTabClosingPolicy().equals(TabClosingPolicy.ALL_TABS) || getSkinnable().getTabClosingPolicy().equals(TabClosingPolicy.SELECTED_TAB) && tab.isSelected()); } private final DoubleProperty animationTransition = new SimpleDoubleProperty(this, "animationTransition", 1.0) { @Override protected void invalidated() { requestLayout(); } }; private void removeListeners(Tab tab) { listener.dispose(); inner.getChildren().clear(); getChildren().clear(); setOnContextMenuRequested(null); setOnMousePressed(null); } private TabAnimationState animationState = TabAnimationState.NONE; private Timeline currentAnimation; @Override protected double computePrefWidth(double height) { // if (animating) { // return prefWidth.getValue(); // } double minWidth = snapSize(getSkinnable().getTabMinWidth()); double maxWidth = snapSize(getSkinnable().getTabMaxWidth()); double paddingRight = snappedRightInset(); double paddingLeft = snappedLeftInset(); double tmpPrefWidth = snapSize(label.prefWidth(-1)); // only include the close button width if it is relevant if (showCloseButton()) { tmpPrefWidth += snapSize(closeBtn.prefWidth(-1)); } if (tmpPrefWidth > maxWidth) { tmpPrefWidth = maxWidth; } else if (tmpPrefWidth < minWidth) { tmpPrefWidth = minWidth; } tmpPrefWidth += paddingRight + paddingLeft; // prefWidth.setValue(tmpPrefWidth); return tmpPrefWidth; } @Override protected double computePrefHeight(double width) { double minHeight = snapSize(getSkinnable().getTabMinHeight()); double maxHeight = snapSize(getSkinnable().getTabMaxHeight()); double paddingTop = snappedTopInset(); double paddingBottom = snappedBottomInset(); double tmpPrefHeight = snapSize(label.prefHeight(width)); if (tmpPrefHeight > maxHeight) { tmpPrefHeight = maxHeight; } else if (tmpPrefHeight < minHeight) { tmpPrefHeight = minHeight; } tmpPrefHeight += paddingTop + paddingBottom; return tmpPrefHeight; } @Override protected void layoutChildren() { double w = (snapSize(getWidth()) - snappedRightInset() - snappedLeftInset()) * animationTransition.getValue(); inner.resize(w, snapSize(getHeight()) - snappedTopInset() - snappedBottomInset()); inner.relocate(snappedLeftInset(), snappedTopInset()); } @Override protected void setWidth(double value) { super.setWidth(value); clip.setWidth(value); } @Override protected void setHeight(double value) { super.setHeight(value); clip.setHeight(value); }
{@inheritDoc}
/** {@inheritDoc} */
@Override public Object queryAccessibleAttribute(AccessibleAttribute attribute, Object... parameters) { switch (attribute) { case TEXT: return getTab().getText(); case SELECTED: return selectedTab == getTab(); default: return super.queryAccessibleAttribute(attribute, parameters); } }
{@inheritDoc}
/** {@inheritDoc} */
@Override public void executeAccessibleAction(AccessibleAction action, Object... parameters) { switch (action) { case REQUEST_FOCUS: getSkinnable().getSelectionModel().select(getTab()); break; default: super.executeAccessibleAction(action, parameters); } } } /* End TabHeaderSkin */ private static final PseudoClass SELECTED_PSEUDOCLASS_STATE = PseudoClass.getPseudoClass("selected"); private static final PseudoClass TOP_PSEUDOCLASS_STATE = PseudoClass.getPseudoClass("top"); private static final PseudoClass BOTTOM_PSEUDOCLASS_STATE = PseudoClass.getPseudoClass("bottom"); private static final PseudoClass LEFT_PSEUDOCLASS_STATE = PseudoClass.getPseudoClass("left"); private static final PseudoClass RIGHT_PSEUDOCLASS_STATE = PseudoClass.getPseudoClass("right"); private static final PseudoClass DISABLED_PSEUDOCLASS_STATE = PseudoClass.getPseudoClass("disabled");
TabContentRegion: each tab has one to contain the tab's content node
/************************************************************************** * * TabContentRegion: each tab has one to contain the tab's content node * **************************************************************************/
static class TabContentRegion extends StackPane { private Tab tab; private InvalidationListener tabContentListener = valueModel -> { updateContent(); }; private InvalidationListener tabSelectedListener = new InvalidationListener() { @Override public void invalidated(Observable valueModel) { setVisible(tab.isSelected()); } }; private WeakInvalidationListener weakTabContentListener = new WeakInvalidationListener(tabContentListener); private WeakInvalidationListener weakTabSelectedListener = new WeakInvalidationListener(tabSelectedListener); public Tab getTab() { return tab; } public TabContentRegion(Tab tab) { getStyleClass().setAll("tab-content-area"); setManaged(false); this.tab = tab; updateContent(); setVisible(tab.isSelected()); tab.selectedProperty().addListener(weakTabSelectedListener); tab.contentProperty().addListener(weakTabContentListener); } private void updateContent() { Node newContent = getTab().getContent(); if (newContent == null) { getChildren().clear(); } else { getChildren().setAll(newContent); } } private void removeListeners(Tab tab) { tab.selectedProperty().removeListener(weakTabSelectedListener); tab.contentProperty().removeListener(weakTabContentListener); } } /* End TabContentRegion */
TabControlButtons: controls to manipulate tab interaction
/************************************************************************** * * TabControlButtons: controls to manipulate tab interaction * **************************************************************************/
class TabControlButtons extends StackPane { private StackPane inner; private StackPane downArrow; private Pane downArrowBtn; private boolean showControlButtons; private ContextMenu popup; public TabControlButtons() { getStyleClass().setAll("control-buttons-tab"); TabPane tabPane = getSkinnable(); downArrowBtn = new Pane(); downArrowBtn.getStyleClass().setAll("tab-down-button"); downArrowBtn.setVisible(isShowTabsMenu()); downArrow = new StackPane(); downArrow.setManaged(false); downArrow.getStyleClass().setAll("arrow"); downArrow.setRotate(tabPane.getSide().equals(Side.BOTTOM) ? 180.0F : 0.0F); downArrowBtn.getChildren().add(downArrow); downArrowBtn.setOnMouseClicked(me -> { showPopupMenu(); }); setupPopupMenu(); inner = new StackPane() { @Override protected double computePrefWidth(double height) { double pw; double maxArrowWidth = ! isShowTabsMenu() ? 0 : snapSize(downArrow.prefWidth(getHeight())) + snapSize(downArrowBtn.prefWidth(getHeight())); pw = 0.0F; if (isShowTabsMenu()) { pw += maxArrowWidth; } if (pw > 0) { pw += snappedLeftInset() + snappedRightInset(); } return pw; } @Override protected double computePrefHeight(double width) { double height = 0.0F; if (isShowTabsMenu()) { height = Math.max(height, snapSize(downArrowBtn.prefHeight(width))); } if (height > 0) { height += snappedTopInset() + snappedBottomInset(); } return height; } @Override protected void layoutChildren() { if (isShowTabsMenu()) { double x = 0; double y = snappedTopInset(); double w = snapSize(getWidth()) - x + snappedLeftInset(); double h = snapSize(getHeight()) - y + snappedBottomInset(); positionArrow(downArrowBtn, downArrow, x, y, w, h); } } private void positionArrow(Pane btn, StackPane arrow, double x, double y, double width, double height) { btn.resize(width, height); positionInArea(btn, x, y, width, height, /*baseline ignored*/0, HPos.CENTER, VPos.CENTER); // center arrow region within arrow button double arrowWidth = snapSize(arrow.prefWidth(-1)); double arrowHeight = snapSize(arrow.prefHeight(-1)); arrow.resize(arrowWidth, arrowHeight); positionInArea(arrow, btn.snappedLeftInset(), btn.snappedTopInset(), width - btn.snappedLeftInset() - btn.snappedRightInset(), height - btn.snappedTopInset() - btn.snappedBottomInset(), /*baseline ignored*/0, HPos.CENTER, VPos.CENTER); } }; inner.getStyleClass().add("container"); inner.getChildren().add(downArrowBtn); getChildren().add(inner); tabPane.sideProperty().addListener(valueModel -> { Side tabPosition = getSkinnable().getSide(); downArrow.setRotate(tabPosition.equals(Side.BOTTOM)? 180.0F : 0.0F); }); tabPane.getTabs().addListener((ListChangeListener<Tab>) c -> setupPopupMenu()); showControlButtons = false; if (isShowTabsMenu()) { showControlButtons = true; requestLayout(); } getProperties().put(ContextMenu.class, popup); } private boolean showTabsMenu = false; private void showTabsMenu(boolean value) { final boolean wasTabsMenuShowing = isShowTabsMenu(); this.showTabsMenu = value; if (showTabsMenu && !wasTabsMenuShowing) { downArrowBtn.setVisible(true); showControlButtons = true; inner.requestLayout(); tabHeaderArea.requestLayout(); } else if (!showTabsMenu && wasTabsMenuShowing) { hideControlButtons(); } } private boolean isShowTabsMenu() { return showTabsMenu; } @Override protected double computePrefWidth(double height) { double pw = snapSize(inner.prefWidth(height)); if (pw > 0) { pw += snappedLeftInset() + snappedRightInset(); } return pw; } @Override protected double computePrefHeight(double width) { return Math.max(getSkinnable().getTabMinHeight(), snapSize(inner.prefHeight(width))) + snappedTopInset() + snappedBottomInset(); } @Override protected void layoutChildren() { double x = snappedLeftInset(); double y = snappedTopInset(); double w = snapSize(getWidth()) - x + snappedRightInset(); double h = snapSize(getHeight()) - y + snappedBottomInset(); if (showControlButtons) { showControlButtons(); showControlButtons = false; } inner.resize(w, h); positionInArea(inner, x, y, w, h, /*baseline ignored*/0, HPos.CENTER, VPos.BOTTOM); } private void showControlButtons() { setVisible(true); if (popup == null) { setupPopupMenu(); } } private void hideControlButtons() { // If the scroll arrows or tab menu is still visible we don't want // to hide it animate it back it. if (isShowTabsMenu()) { showControlButtons = true; } else { setVisible(false); clearPopupMenu(); popup = null; } // This needs to be called when we are in the left tabPosition // to allow for the clip offset to move properly (otherwise // it jumps too early - before the animation is done). requestLayout(); } private void setupPopupMenu() { if (popup == null) { popup = new ContextMenu(); } clearPopupMenu(); ToggleGroup group = new ToggleGroup(); ObservableList<RadioMenuItem> menuitems = FXCollections.<RadioMenuItem>observableArrayList(); for (final Tab tab : getSkinnable().getTabs()) { TabMenuItem item = new TabMenuItem(tab); item.setToggleGroup(group); item.setOnAction(t -> getSkinnable().getSelectionModel().select(tab)); menuitems.add(item); } popup.getItems().addAll(menuitems); } private void clearPopupMenu() { for (MenuItem item : popup.getItems()) { ((TabMenuItem) item).dispose(); } popup.getItems().clear(); } private void showPopupMenu() { for (MenuItem mi: popup.getItems()) { TabMenuItem tmi = (TabMenuItem)mi; if (selectedTab.equals(tmi.getTab())) { tmi.setSelected(true); break; } } popup.show(downArrowBtn, Side.BOTTOM, 0, 0); } } /* End TabControlButtons*/ static class TabMenuItem extends RadioMenuItem { Tab tab; private InvalidationListener disableListener = new InvalidationListener() { @Override public void invalidated(Observable o) { setDisable(tab.isDisable()); } }; private WeakInvalidationListener weakDisableListener = new WeakInvalidationListener(disableListener); public TabMenuItem(final Tab tab) { super(tab.getText(), TabPaneSkin.clone(tab.getGraphic())); this.tab = tab; setDisable(tab.isDisable()); tab.disableProperty().addListener(weakDisableListener); textProperty().bind(tab.textProperty()); } public Tab getTab() { return tab; } public void dispose() { textProperty().unbind(); tab.disableProperty().removeListener(weakDisableListener); tab = null; } } @Override public Object queryAccessibleAttribute(AccessibleAttribute attribute, Object... parameters) { switch (attribute) { case FOCUS_ITEM: return tabHeaderArea.getTabHeaderSkin(selectedTab); case ITEM_COUNT: return tabHeaderArea.headersRegion.getChildren().size(); case ITEM_AT_INDEX: { Integer index = (Integer)parameters[0]; if (index == null) return null; return tabHeaderArea.headersRegion.getChildren().get(index); } default: return super.queryAccessibleAttribute(attribute, parameters); } } // -------------------------- // Tab Reordering // -------------------------- private enum DragState { NONE, START, REORDER } private EventHandler<MouseEvent> headerDraggedHandler = this::handleHeaderDragged; private EventHandler<MouseEvent> headerMousePressedHandler = this::handleHeaderMousePressed; private EventHandler<MouseEvent> headerMouseReleasedHandler = this::handleHeaderMouseReleased; private int dragTabHeaderIndex; private TabHeaderSkin dragTabHeader; private TabHeaderSkin dropTabHeader; private StackPane headersRegion; private DragState dragState; private final int MIN_TO_MAX = 1; private final int MAX_TO_MIN = -1; private int xLayoutDirection; private double dragEventPrevLoc; private int prevDragDirection = MIN_TO_MAX; private final double DRAG_DIST_THRESHOLD = 0.75; // Reordering Animation private final double ANIM_DURATION = 120; private TabHeaderSkin dropAnimHeader; private Tab swapTab; private double dropHeaderSourceX; private double dropHeaderTransitionX; private final Animation dropHeaderAnim = new Transition() { { setInterpolator(Interpolator.EASE_BOTH); setCycleDuration(Duration.millis(ANIM_DURATION)); setOnFinished(event -> { completeHeaderReordering(); }); } protected void interpolate(double frac) { dropAnimHeader.setLayoutX(dropHeaderSourceX + dropHeaderTransitionX * frac); } }; private double dragHeaderStartX; private double dragHeaderDestX; private double dragHeaderSourceX; private double dragHeaderTransitionX; private final Animation dragHeaderAnim = new Transition() { { setInterpolator(Interpolator.EASE_OUT); setCycleDuration(Duration.millis(ANIM_DURATION)); setOnFinished(event -> { resetDrag(); }); } protected void interpolate(double frac) { dragTabHeader.setLayoutX(dragHeaderSourceX + dragHeaderTransitionX * frac); } }; // Helper methods for managing the listeners based on TabDragPolicy. private void addReorderListeners(Node n) { n.addEventHandler(MouseEvent.MOUSE_PRESSED, headerMousePressedHandler); n.addEventHandler(MouseEvent.MOUSE_RELEASED, headerMouseReleasedHandler); n.addEventHandler(MouseEvent.MOUSE_DRAGGED, headerDraggedHandler); } private void removeReorderListeners(Node n) { n.removeEventHandler(MouseEvent.MOUSE_PRESSED, headerMousePressedHandler); n.removeEventHandler(MouseEvent.MOUSE_RELEASED, headerMouseReleasedHandler); n.removeEventHandler(MouseEvent.MOUSE_DRAGGED, headerDraggedHandler); } private ListChangeListener childListener = new ListChangeListener<Node>() { public void onChanged(Change<? extends Node> change) { while (change.next()) { if (change.wasAdded()) { for(Node n : change.getAddedSubList()) { addReorderListeners(n); } } if (change.wasRemoved()) { for(Node n : change.getRemoved()) { removeReorderListeners(n); } } } } }; private void updateListeners() { if (getSkinnable().getTabDragPolicy() == TabDragPolicy.FIXED || getSkinnable().getTabDragPolicy() == null) { for (Node n : headersRegion.getChildren()) { removeReorderListeners(n); } headersRegion.getChildren().removeListener(childListener); } else if (getSkinnable().getTabDragPolicy() == TabDragPolicy.REORDER) { for (Node n : headersRegion.getChildren()) { addReorderListeners(n); } headersRegion.getChildren().addListener(childListener); } } private void setupReordering(StackPane headersRegion) { dragState = DragState.NONE; this.headersRegion = headersRegion; updateListeners(); getSkinnable().tabDragPolicyProperty().addListener((observable, oldValue, newValue) -> { if (oldValue != newValue) { updateListeners(); } }); } private void handleHeaderMousePressed(MouseEvent event) { if (event.getButton().equals(MouseButton.PRIMARY)) { ((StackPane) event.getSource()).setMouseTransparent(true); startDrag(event); } } private void handleHeaderMouseReleased(MouseEvent event) { if (event.getButton().equals(MouseButton.PRIMARY)) { ((StackPane) event.getSource()).setMouseTransparent(false); stopDrag(); event.consume(); } } private void handleHeaderDragged(MouseEvent event) { if (event.getButton().equals(MouseButton.PRIMARY)) { perfromDrag(event); } } private double getDragDelta(double curr, double prev) { if (getSkinnable().getSide().equals(Side.TOP) || getSkinnable().getSide().equals(Side.RIGHT)) { return curr - prev; } else { return prev - curr; } } private int deriveTabHeaderLayoutXDirection() { if (getSkinnable().getSide().equals(Side.TOP) || getSkinnable().getSide().equals(Side.RIGHT)) { // TabHeaderSkin are laid out in left to right direction inside headersRegion return MIN_TO_MAX; } // TabHeaderSkin are laid out in right to left direction inside headersRegion return MAX_TO_MIN; } private void perfromDrag(MouseEvent event) { int dragDirection; double dragHeaderNewLayoutX; Bounds dragHeaderBounds; Bounds dropHeaderBounds; double draggedDist; double mouseCurrentLoc = getHeaderRegionLocalX(event); double dragDelta = getDragDelta(mouseCurrentLoc, dragEventPrevLoc); if (dragDelta > 0) { // Dragging the tab header towards higher indexed tab headers inside headersRegion. dragDirection = MIN_TO_MAX; } else { // Dragging the tab header towards lower indexed tab headers inside headersRegion. dragDirection = MAX_TO_MIN; } // Stop dropHeaderAnim if direction of drag is changed if (prevDragDirection != dragDirection) { stopAnim(dropHeaderAnim); prevDragDirection = dragDirection; } dragHeaderNewLayoutX = dragTabHeader.getLayoutX() + xLayoutDirection * dragDelta; if (dragHeaderNewLayoutX >= 0 && dragHeaderNewLayoutX + dragTabHeader.getWidth() <= headersRegion.getWidth()) { dragState = DragState.REORDER; dragTabHeader.setLayoutX(dragHeaderNewLayoutX); dragHeaderBounds = dragTabHeader.getBoundsInParent(); if (dragDirection == MIN_TO_MAX) { // Dragging the tab header towards higher indexed tab headers // Last tab header can not be dragged outside headersRegion. // When the mouse is moved too fast, sufficient number of events // are not generated. Hence it is required to check all possible // headers to be reordered. for (int i = dragTabHeaderIndex + 1; i < headersRegion.getChildren().size(); i++) { dropTabHeader = (TabHeaderSkin) headersRegion.getChildren().get(i); // dropTabHeader should not be already reordering. if (dropAnimHeader != dropTabHeader) { dropHeaderBounds = dropTabHeader.getBoundsInParent(); if (xLayoutDirection == MIN_TO_MAX) { draggedDist = dragHeaderBounds.getMaxX() - dropHeaderBounds.getMinX(); } else { draggedDist = dropHeaderBounds.getMaxX() - dragHeaderBounds.getMinX(); } // A tab header is reordered when dragged tab header crosses DRAG_DIST_THRESHOLD% of next tab header's width. if (draggedDist > dropHeaderBounds.getWidth() * DRAG_DIST_THRESHOLD) { stopAnim(dropHeaderAnim); // Distance by which tab header should be animated. dropHeaderTransitionX = xLayoutDirection * -dragHeaderBounds.getWidth(); if (xLayoutDirection == MIN_TO_MAX) { dragHeaderDestX = dropHeaderBounds.getMaxX() - dragHeaderBounds.getWidth(); } else { dragHeaderDestX = dropHeaderBounds.getMinX(); } startHeaderReorderingAnim(); } else { break; } } } } else { // dragDirection is MAX_TO_MIN // Dragging the tab header towards lower indexed tab headers. // First tab header can not be dragged outside headersRegion. // When the mouse is moved too fast, sufficient number of events // are not generated. Hence it is required to check all possible // tab headers to be reordered. for (int i = dragTabHeaderIndex - 1; i >= 0; i--) { dropTabHeader = (TabHeaderSkin) headersRegion.getChildren().get(i); // dropTabHeader should not be already reordering. if (dropAnimHeader != dropTabHeader) { dropHeaderBounds = dropTabHeader.getBoundsInParent(); if (xLayoutDirection == MIN_TO_MAX) { draggedDist = dropHeaderBounds.getMaxX() - dragHeaderBounds.getMinX(); } else { draggedDist = dragHeaderBounds.getMaxX() - dropHeaderBounds.getMinX(); } // A tab header is reordered when dragged tab crosses DRAG_DIST_THRESHOLD% of next tab header's width. if (draggedDist > dropHeaderBounds.getWidth() * DRAG_DIST_THRESHOLD) { stopAnim(dropHeaderAnim); // Distance by which tab header should be animated. dropHeaderTransitionX = xLayoutDirection * dragHeaderBounds.getWidth(); if (xLayoutDirection == MIN_TO_MAX) { dragHeaderDestX = dropHeaderBounds.getMinX(); } else { dragHeaderDestX = dropHeaderBounds.getMaxX() - dragHeaderBounds.getWidth(); } startHeaderReorderingAnim(); } else { break; } } } } } dragEventPrevLoc = mouseCurrentLoc; event.consume(); } private void startDrag(MouseEvent event) { // Stop the animations if any are running from previous reorder. stopAnim(dropHeaderAnim); stopAnim(dragHeaderAnim); dragTabHeader = (TabHeaderSkin) event.getSource(); if (dragTabHeader != null) { dragState = DragState.START; swapTab = null; xLayoutDirection = deriveTabHeaderLayoutXDirection(); dragEventPrevLoc = getHeaderRegionLocalX(event); dragTabHeaderIndex = headersRegion.getChildren().indexOf(dragTabHeader); dragTabHeader.setViewOrder(0); dragHeaderStartX = dragHeaderDestX = dragTabHeader.getLayoutX(); } } private double getHeaderRegionLocalX(MouseEvent ev) { // The event is converted to tab header's parent i.e. headersRegion's local space. // This will provide a value of X co-ordinate with all transformations of TabPane // and transformations of all nodes in the TabPane's parent hierarchy. Point2D sceneToLocalHR = headersRegion.sceneToLocal(ev.getSceneX(), ev.getSceneY()); return sceneToLocalHR.getX(); } private void stopDrag() { if (dragState == DragState.START) { // No drag action was performed. resetDrag(); return; } // Animate tab header being dragged to its final position. dragHeaderSourceX = dragTabHeader.getLayoutX(); dragHeaderTransitionX = dragHeaderDestX - dragHeaderSourceX; dragHeaderAnim.playFromStart(); // Reorder the tab list. if (dragHeaderStartX != dragHeaderDestX) { ((TabObservableList<Tab>) getSkinnable().getTabs()).reorder(dragTabHeader.tab, swapTab); swapTab = null; } } private void resetDrag() { dragState = DragState.NONE; dragTabHeader.setViewOrder(1); dragTabHeader = null; dropTabHeader = null; headersRegion.requestLayout(); } // Animate tab header being dropped-on to its new position. private void startHeaderReorderingAnim() { dropAnimHeader = dropTabHeader; swapTab = dropAnimHeader.tab; dropHeaderSourceX = dropAnimHeader.getLayoutX(); dropHeaderAnim.playFromStart(); } // Remove dropAnimHeader and add at the index position of dragTabHeader. private void completeHeaderReordering() { if (dropAnimHeader != null) { headersRegion.getChildren().remove(dropAnimHeader); headersRegion.getChildren().add(dragTabHeaderIndex, dropAnimHeader); dropAnimHeader = null; headersRegion.requestLayout(); dragTabHeaderIndex = headersRegion.getChildren().indexOf(dragTabHeader); } } // Helper method to stop an animation. private void stopAnim(Animation anim) { if (anim.getStatus() == Animation.Status.RUNNING) { anim.getOnFinished().handle(null); anim.stop(); } } // For testing purpose. ContextMenu test_getTabsMenu() { return tabHeaderArea.controlButtons.popup; } }