Add a JBrowser component + example

This adds a JBrowser Swing component that is intended to work similarly
to how the NSBrowser component in Swing works

1 files changed, 16 insertions, 0 deletions

diff --git a/base/src/main/java/bjc/utils/gui/browser/BlankHeaderProvider.java b/base/src/main/java/bjc/utils/gui/browser/BlankHeaderProvider.java
new file mode 100644
index 0000000..77013b4
--- /dev/null
+++ b/base/src/main/java/bjc/utils/gui/browser/BlankHeaderProvider.java
@@ -0,0 +1,16 @@
+package bjc.utils.gui.browser;
+
+/** Provides header text for reserved blank columns. */
+@FunctionalInterface
+public interface BlankHeaderProvider {
+	/**
+	 * @param depthFromRoot 0 = first real column (children of root), 1 = second,
+	 *                      etc. For blanks, this is the depth they would represent
+	 *                      if populated now.
+	 * @param blankOrdinal  0-based ordinal among the consecutive blanks
+	 *                      (left-to-right).
+	 * @param model         current model.
+	 * @return header text; return null/empty to hide the header for that blank.
+	 */
+	String getBlankHeader(int depthFromRoot, int blankOrdinal, JBrowserModel model);
+}
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