JavaFX聊天界面

/** * Copyright (c) 2013, 2016 ControlsFX * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of ControlsFX, any associated website, nor the * names of its contributors may be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL CONTROLSFX BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package com.only.fx; import static java.util.Objects.requireNonNull; import static javafx.scene.input.MouseEvent.MOUSE_CLICKED; import com.only.fx.skin.OnlyPopupOverSkin; import javafx.animation.FadeTransition; import javafx.beans.InvalidationListener; import javafx.beans.Observable; import javafx.beans.WeakInvalidationListener; import javafx.beans.property.BooleanProperty; import javafx.beans.property.DoubleProperty; import javafx.beans.property.ObjectProperty; import javafx.beans.property.SimpleBooleanProperty; import javafx.beans.property.SimpleDoubleProperty; import javafx.beans.property.SimpleObjectProperty; import javafx.beans.property.SimpleStringProperty; import javafx.beans.property.StringProperty; import javafx.beans.value.ChangeListener; import javafx.beans.value.ObservableValue; import javafx.beans.value.WeakChangeListener; import javafx.event.EventHandler; import javafx.event.WeakEventHandler; import javafx.geometry.Bounds; import javafx.geometry.Insets; import javafx.scene.Node; import javafx.scene.control.Label; import javafx.scene.control.PopupControl; import javafx.scene.control.Skin; import javafx.scene.layout.StackPane; import javafx.stage.Window; import javafx.stage.WindowEvent; import javafx.util.Duration; /** * The PopOver control provides detailed information about an owning node in a * popup window. The popup window has a very lightweight appearance (no default * window decorations) and an arrow pointing at the owner. Due to the nature of * popup windows the PopOver will move around with the parent window when the * user drags it. <br> * <center> <img src="popover.png" alt="Screenshot of PopOver"> </center> <br> * The PopOver can be detached from the owning node by dragging it away from the * owner. It stops displaying an arrow and starts displaying a title and a close * icon. <br> * <br> * <center> <img src="popover-detached.png" alt= * "Screenshot of a detached PopOver"> </center> <br> * The following image shows a popover with an accordion content node. PopOver * controls are automatically resizing themselves when the content node changes * its size.<br> * <br> * <center> <img src="popover-accordion.png" alt= * "Screenshot of PopOver containing an Accordion"> </center> <br> * For styling apply stylesheets to the root pane of the PopOver. * * <h3>Example:</h3> * * <pre> * PopOver popOver = new PopOver(); * popOver.getRoot().getStylesheets().add(...); * </pre> * */ public class OnlyPopupOver extends PopupControl { private static final String DEFAULT_STYLE_CLASS = "only-popup-over"; //$NON-NLS-1$ private static final Duration DEFAULT_FADE_DURATION = Duration.seconds(.2); private double targetX; private double targetY; private final SimpleBooleanProperty animated = new SimpleBooleanProperty(true); private final ObjectProperty<Duration> fadeInDuration = new SimpleObjectProperty<>(DEFAULT_FADE_DURATION); private final ObjectProperty<Duration> fadeOutDuration = new SimpleObjectProperty<>(DEFAULT_FADE_DURATION); /** * Creates a pop over with a label as the content node. */ public OnlyPopupOver() { super(); getStyleClass().add(DEFAULT_STYLE_CLASS); //getRoot().getStylesheets().add(OnlyPopupOver.class.getResource("/com/only/fx/OnlyPopupOver.css").toExternalForm()); //$NON-NLS-1$ getRoot().getStylesheets().add(this.getClass().getResource("/com/only/fx/OnlyPopupOver.css").toString()); setAnchorLocation(AnchorLocation.WINDOW_TOP_LEFT); setOnHiding(new EventHandler<WindowEvent>() { @Override public void handle(WindowEvent evt) { setDetached(false); } }); /* * Create some initial content. */ Label label = new Label(""); //$NON-NLS-1$ label.setPrefSize(30, 10); label.setPadding(new Insets(4)); setContentNode(label); InvalidationListener repositionListener = observable -> { if (isShowing() && !isDetached()) { show(getOwnerNode(), targetX, targetY); adjustWindowLocation(); } }; arrowSize.addListener(repositionListener); cornerRadius.addListener(repositionListener); arrowLocation.addListener(repositionListener); arrowIndent.addListener(repositionListener); headerAlwaysVisible.addListener(repositionListener); /* * A detached popover should of course not automatically hide itself. */ detached.addListener(it -> { if (isDetached()) { setAutoHide(false); } else { setAutoHide(true); } }); setAutoHide(true); } /** * Creates a pop over with the given node as the content node. * * @param content * The content shown by the pop over */ public OnlyPopupOver(Node content) { this(); setContentNode(content); } private final StackPane root = new StackPane(); /** * The root pane stores the content node of the popover. It is accessible * via this method in order to support proper styling. * * <h3>Example:</h3> * * <pre> * PopOver popOver = new PopOver(); * popOver.getRoot().getStylesheets().add(...); * </pre> * * @return the root pane */ public final StackPane getRoot() { return root; } // Content support. private final ObjectProperty<Node> contentNode = new SimpleObjectProperty<Node>(this, "contentNode") { //$NON-NLS-1$ @Override public void setValue(Node node) { if (node == null) { throw new IllegalArgumentException("content node can not be null"); //$NON-NLS-1$ } }; }; /** * Returns the content shown by the pop over. * * @return the content node property */ public final ObjectProperty<Node> contentNodeProperty() { return contentNode; } /** * Returns the value of the content property * * @return the content node * * @see #contentNodeProperty() */ public final Node getContentNode() { return contentNodeProperty().get(); } /** * Sets the value of the content property. * * @param content * the new content node value * * @see #contentNodeProperty() */ public final void setContentNode(Node content) { contentNodeProperty().set(content); } private InvalidationListener hideListener = new InvalidationListener() { @Override public void invalidated(Observable observable) { if (!isDetached()) { hide(D