JavaFX 分页

分页控件用于浏览多个页面。 我们典型地使用对网页的分页控制，例如博客。 在博客页面的底部，我们可以看到一个矩形区域，作为一个数字列表来指示页面索引，以及一个下一个/上一个按钮来链接到下一个/上一个页面。

创建分页控件

分页控件由页面内容和页面导航区域组成。

创建具有不确定页计数和当前页索引等于零的分页控件

Pagination pagination1 = new Pagination();

要创建一个5页的分页控件，当前页索引等于零

Pagination pagination2 = new Pagination(5);

要创建一个5页的分页控件，当前所选索引等于2

Pagination pagination3 = new Pagination(5, 2);
/*
 * Copyright (c) 2008, 2014, Oracle and/or its affiliates.
 * All rights reserved. Use is subject to license terms.
 *
 * This file is available and licensed under the following license:
 *
 * 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 Oracle 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 THE COPYRIGHT
 * OWNER OR CONTRIBUTORS 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.
 */
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Pagination;
import javafx.scene.control.Hyperlink;
import javafx.scene.control.Label;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class Main extends Application {
 private Pagination pagination;
 public static void main(String[] args) throws Exception {
 launch(args);
 }
 public int itemsPerPage() {
 return 8;
 }
 public VBox createPage(int pageIndex) {
 VBox box = new VBox(5);
 int page = pageIndex * itemsPerPage();
 for (int i = page; i < page + itemsPerPage(); i++) {
 VBox element = new VBox();
 Hyperlink link = new Hyperlink("Item " + (i + 1));
 link.setVisited(true);
 Label text = new Label("Search results\nfor " + link.getText());
 element.getChildren().addAll(link, text);
 box.getChildren().add(element);
 }
 return box;
 }
 @Override
 public void start(final Stage stage) throws Exception {
 pagination = new Pagination(28, 0);
 pagination.setStyle("-fx-border-color:red;");
 pagination.setPageFactory((Integer pageIndex) -> createPage(pageIndex));
 AnchorPane anchor = new AnchorPane();
 AnchorPane.setTopAnchor(pagination, 10.0);
 AnchorPane.setRightAnchor(pagination, 10.0);
 AnchorPane.setBottomAnchor(pagination, 10.0);
 AnchorPane.setLeftAnchor(pagination, 10.0);
 anchor.getChildren().addAll(pagination);
 Scene scene = new Scene(anchor);
 stage.setScene(scene);
 stage.setTitle("PaginationSample");
 stage.show();
 }
}

上面的代码生成以下结果。

将分段文本添加到分页控件

/*
 * Copyright (c) 2008, 2014, Oracle and/or its affiliates.
 * All rights reserved. Use is subject to license terms.
 *
 * This file is available and licensed under the following license:
 *
 * 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 Oracle 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 THE COPYRIGHT
 * OWNER OR CONTRIBUTORS 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.
 */
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Pagination;
import javafx.scene.control.TextArea;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class Main extends Application {
 
 private Pagination pagination;
 final String[] textPages = new String[]{
 "this is a test 1",
 "this is a test 2",
 "this is a test 3",
 "this is a test 4",
 "this is a test 5",
 "this is a test 6",
 "this is a test 7",
 "this is a test 8",
 "this is a test 8",
 };
 
 public static void main(String[] args) throws Exception {
 launch(args);
 }
 
 public int itemsPerPage() {
 return 1;
 }
 
 public VBox createPage(int pageIndex) {
 VBox box = new VBox(5);
 int page = pageIndex * itemsPerPage();
 for (int i = page; i < page + itemsPerPage(); i++) {
 TextArea text = new TextArea(textPages[i]);
 text.setWrapText(true);
 box.getChildren().add(text);
 }
 return box;
 }
 
 @Override
 public void start(final Stage stage) throws Exception {
 pagination = new Pagination(28, 0);
 pagination.setPageFactory((Integer pageIndex) -> {
 if (pageIndex >= textPages.length) {
 return null;
 } else {
 return createPage(pageIndex);
 }
 });
 
 AnchorPane anchor = new AnchorPane();
 AnchorPane.setTopAnchor(pagination, 10.0);
 AnchorPane.setRightAnchor(pagination, 10.0);
 AnchorPane.setBottomAnchor(pagination, 10.0);
 AnchorPane.setLeftAnchor(pagination, 10.0);
 anchor.getChildren().addAll(pagination);
 Scene scene = new Scene(anchor, 400, 250);
 stage.setScene(scene);
 stage.setTitle("PaginationSample");
 stage.show();
 }
}

上面的代码生成以下结果。

添加未确定大小的内容

/*
 * Copyright (c) 2008, 2014, Oracle and/or its affiliates.
 * All rights reserved. Use is subject to license terms.
 *
 * This file is available and licensed under the following license:
 *
 * 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 Oracle 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 THE COPYRIGHT
 * OWNER OR CONTRIBUTORS 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.
 */
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Pagination;
import javafx.scene.control.Label;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
 
public class Main extends Application {
 
 private Pagination pagination;
 String[] fonts = new String[]{};
 
 public static void main(String[] args) throws Exception {
 launch(args);
 }
 
 public int itemsPerPage() {
 return 15;
 }
 
 public VBox createPage(int pageIndex) { 
 VBox box = new VBox(5);
 int page = pageIndex * itemsPerPage();
 for (int i = page; i < page + itemsPerPage(); i++) {
 Label font = new Label(fonts[i]);
 box.getChildren().add(font);
 }
 return box;
 }
 
 @Override
 public void start(final Stage stage) throws Exception {
 fonts = Font.getFamilies().toArray(fonts);
 pagination = new Pagination(fonts.length/itemsPerPage(), 0);
 pagination.setPageFactory((Integer pageIndex) -> createPage(pageIndex));
 
 AnchorPane anchor = new AnchorPane();
 AnchorPane.setTopAnchor(pagination, 10.0);
 AnchorPane.setRightAnchor(pagination, 10.0);
 AnchorPane.setBottomAnchor(pagination, 10.0);
 AnchorPane.setLeftAnchor(pagination, 10.0);
 anchor.getChildren().addAll(pagination);
 Scene scene = new Scene(anchor, 400, 450);
 stage.setScene(scene);
 stage.show();
 }
}

上面的代码生成以下结果。