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TabbedPane: fixed NPE in scroll layout when removing last tab

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This commit is contained in:
Karl Tauber
2020-10-20 10:37:31 +02:00
parent 700bb9b567
commit 9bc656a5c5
2 changed files with 8 additions and 1 deletions
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2
CHANGELOG.md
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@@ -16,7 +16,7 @@ FlatLaf Change Log
- TabbedPane: Support adding custom components to left and right sides of tabs - TabbedPane: Support adding custom components to left and right sides of tabs
area. (set client property `JTabbedPane.leadingComponent` or area. (set client property `JTabbedPane.leadingComponent` or
`JTabbedPane.trailingComponent` to a `java.awt.Component`) (issue #40) `JTabbedPane.trailingComponent` to a `java.awt.Component`) (issue #40)
- TabbedPane: Support closable tabs. (issue #40) - TabbedPane: Support closable tabs. (issues #31 and #40)
- Support painting separator line between window title and content (use UI value - Support painting separator line between window title and content (use UI value
`TitlePane.borderColor`). (issue #184) `TitlePane.borderColor`). (issue #184)

7
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTabbedPaneUI.java
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@@ -1844,6 +1844,13 @@ public class FlatTabbedPaneUI
if( !useMoreButton && (backwardButton == null || forwardButton == null) ) if( !useMoreButton && (backwardButton == null || forwardButton == null) )
return; // should never occur return; // should never occur
if( rects.length == 0 ) {
moreTabsButton.setVisible( false );
backwardButton.setVisible( false );
forwardButton.setVisible( false );
return;
}
Rectangle bounds = tabPane.getBounds(); Rectangle bounds = tabPane.getBounds();
Insets insets = tabPane.getInsets(); Insets insets = tabPane.getInsets();
int tabPlacement = tabPane.getTabPlacement(); int tabPlacement = tabPane.getTabPlacement();