javafx

Canonical way to cancel a table cell edit if parse fails

由 瘦欲@ 提交于 2020-04-30 06:25:27
问题 Edit : I first voted to close as a duplicate after finding this answer by James_D, which sets a TextFormatter on a TextField . But then firstly I found that (in a TableView context) the method TextFieldTableCell.forTableColumn() does not in fact draw a TextField when it starts editing, but instead a LabeledText , which does not subclass TextInputControl , and therefore does not have setTextFormatter() . Secondly, I wanted something which acted in a familiar sort of way. I may have produced

Canonical way to cancel a table cell edit if parse fails

由 本秂侑毒 提交于 2020-04-30 06:25:27
问题 Edit : I first voted to close as a duplicate after finding this answer by James_D, which sets a TextFormatter on a TextField . But then firstly I found that (in a TableView context) the method TextFieldTableCell.forTableColumn() does not in fact draw a TextField when it starts editing, but instead a LabeledText , which does not subclass TextInputControl , and therefore does not have setTextFormatter() . Secondly, I wanted something which acted in a familiar sort of way. I may have produced

How to avoid closing popup menu on mouse clicking in javafx combobox?

由 久未见 提交于 2020-04-30 02:50:28
问题 I have combobox with custom ListCell: private class SeverityCell extends ListCell<CustomItem> { private final CustomBox custombox; { setContentDisplay(ContentDisplay.GRAPHIC_ONLY); custombox = new CustomBox(); } @Override protected void updateItem(CustomItem item, boolean empty) { super.updateItem(item, empty); if (null != item) { //... } setGraphic(custombox); } } and combobox.setCellFactory(new Callback<ListView<CustomItem>, ListCell<CustomItem>>() { @Override public ListCell<CustomItem>

阿里面试官：JVM类加载器是否可以加载自定义的String？

由 青春壹個敷衍的年華 提交于 2020-04-26 11:40:56
曾经有一次，面试官问到类加载机制，相信大多数小伙伴都可以答上来双亲委派机制，也都知道JVM出于安全性的考虑，全限定类名相同的String是不能被加载的。 但是如果加载了，会出现什么样的结果呢？异常？那是什么样的异常。如果包名不相同呢？自定义类加载器是否可以加载呢？ 相信面试官从各种不同的角度出击，很快就会答出漏洞，毕竟咱没有深入研究过虚拟机…… 接下来笔者就针对上述问题进行一一验证。该篇文章抱着求证答案的方向出发，并无太多理论方面的详解。如有理解上的偏差，还望大家不吝赐教。 JVM都有哪些类加载器 首先我们放上一张节选自网络的JVM类加载机制示意图 JVM 中内置了三个重要的 ClassLoader，除了 BootstrapClassLoader 其他类加载器均由 Java 实现且全部继承自java.lang.ClassLoader： BootstrapClassLoader(启动类加载器) ：最顶层的加载类，由C++实现，负责加载 %JAVA_HOME%/lib目录下的jar包和类或者或被 -Xbootclasspath参数指定的路径中的所有类。 ExtensionClassLoader(扩展类加载器) ：主要负责加载目录 %JRE_HOME%/lib/ext 目录下的jar包和类，或被 java.ext.dirs 系统变量所指定的路径下的jar包。 AppClassLoader

Giving 2 elements seperate alignments in a single hbox

由 夙愿已清 提交于 2020-04-19 05:45:41
问题 I am trying to get 2 elements, a button and a label, to have their own individual alignments in a single HBox in javafx. My code thus far: Button bt1= new Button("left"); bt1.setAlignment(Pos.BASELINE_LEFT); Label tst= new Label("right"); tst.setAlignment(Pos.BASELINE_RIGHT); BorderPane barLayout = new BorderPane(); HBox bottomb = new HBox(20); barLayout.setBottom(bottomb); bottomb.getChildren().addAll(bt1, tst); by default, the hbox shoves both elements to the left, next to each other. The

Giving 2 elements seperate alignments in a single hbox

由 强颜欢笑 提交于 2020-04-19 05:43:45
问题 I am trying to get 2 elements, a button and a label, to have their own individual alignments in a single HBox in javafx. My code thus far: Button bt1= new Button("left"); bt1.setAlignment(Pos.BASELINE_LEFT); Label tst= new Label("right"); tst.setAlignment(Pos.BASELINE_RIGHT); BorderPane barLayout = new BorderPane(); HBox bottomb = new HBox(20); barLayout.setBottom(bottomb); bottomb.getChildren().addAll(bt1, tst); by default, the hbox shoves both elements to the left, next to each other. The

Giving 2 elements seperate alignments in a single hbox

由 家住魔仙堡 提交于 2020-04-19 05:42:41
问题 I am trying to get 2 elements, a button and a label, to have their own individual alignments in a single HBox in javafx. My code thus far: Button bt1= new Button("left"); bt1.setAlignment(Pos.BASELINE_LEFT); Label tst= new Label("right"); tst.setAlignment(Pos.BASELINE_RIGHT); BorderPane barLayout = new BorderPane(); HBox bottomb = new HBox(20); barLayout.setBottom(bottomb); bottomb.getChildren().addAll(bt1, tst); by default, the hbox shoves both elements to the left, next to each other. The

Giving 2 elements seperate alignments in a single hbox

由 匆匆过客 提交于 2020-04-19 05:39:53
问题 I am trying to get 2 elements, a button and a label, to have their own individual alignments in a single HBox in javafx. My code thus far: Button bt1= new Button("left"); bt1.setAlignment(Pos.BASELINE_LEFT); Label tst= new Label("right"); tst.setAlignment(Pos.BASELINE_RIGHT); BorderPane barLayout = new BorderPane(); HBox bottomb = new HBox(20); barLayout.setBottom(bottomb); bottomb.getChildren().addAll(bt1, tst); by default, the hbox shoves both elements to the left, next to each other. The

Use Groovy app and test code in combination with jlink solution for bundling JavaFX

由 末鹿安然 提交于 2020-04-17 22:50:12
问题 This follows on from this excellent solution to the question of how to get Gradle to bundle up JavaFX with your distributions. NB specs: Linux Mint 18.3, Java 11, JavaFX 13. That stuff, involving jlink and a module-info.java, is beyond my pay grade (although I'm trying to read up on these things). I want to move to using Groovy in my app and test code (i.e. Spock) rather than Java. The trouble is, the minute I include the "normal" dependency in my build.gradle i.e. implementation 'org
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