Allow grid columns to optionally shrink to be narrower than contents

Fixes #8548

1 files changed, 54 insertions, 0 deletions

diff --git a/server/src/main/java/com/vaadin/ui/Grid.java b/server/src/main/java/com/vaadin/ui/Grid.java
index d5bdfe45e8..3ae03679cf 100644
--- a/server/src/main/java/com/vaadin/ui/Grid.java
+++ b/server/src/main/java/com/vaadin/ui/Grid.java
@@ -1472,9 +1472,12 @@ public class Grid<T> extends AbstractListing<T> implements HasComponents,
          * This defines the minimum guaranteed pixel width of the column
          * <em>when it is set to expand</em>.
          *
+         * @param pixels
+         *            the minimum width for the column
          * @throws IllegalStateException
          *             if the column is no longer attached to any grid
          * @see #setExpandRatio(int)
+         * @return the column itself
          */
         public Column<T, V> setMinimumWidth(double pixels)
                 throws IllegalStateException {
@@ -1502,6 +1505,57 @@ public class Grid<T> extends AbstractListing<T> implements HasComponents,
         }
 
         /**
+         * Sets whether the width of the contents in the column should be
+         * considered minimum width for this column.
+         * <p>
+         * If this is set to <code>true</code> (default for backwards
+         * compatibility), then a column will not shrink to smaller than the
+         * width required to show the contents available when calculating the
+         * widths (only the widths of the initially rendered rows are
+         * considered).
+         * <p>
+         * If this is set to <code>false</code> and the column has been set to
+         * expand using #setExpandRatio(int), then the contents of the column
+         * will be ignored when calculating the width, and the column will thus
+         * shrink down to the minimum width defined by #setMinimumWidth(double)
+         * if necessary.
+         *
+         * @param minimumWidthFromContent
+         *            <code>true</code> to reserve space for all contents,
+         *            <code>false</code> to allow the column to shrink smaller
+         *            than the contents
+         * @return the column itself
+         * @throws IllegalStateException
+         *             if the column is no longer attached to any grid
+         * @see #setMinimumWidth(double)
+         * @since
+         */
+        public Column<T, V> setMinimumWidthFromContent(
+                boolean minimumWidthFromContent) throws IllegalStateException {
+            checkColumnIsAttached();
+
+            if (isMinimumWidthFromContent() != minimumWidthFromContent) {
+                getState().minimumWidthFromContent = minimumWidthFromContent;
+                getGrid().markAsDirty();
+            }
+            return this;
+        }
+
+        /**
+         * Gets whether the width of the contents in the column should be
+         * considered minimum width for this column.
+         *
+         * @return <code>true</code> to reserve space for all contents,
+         *         <code>false</code> to allow the column to shrink smaller than
+         *         the contents
+         * @see #setMinimumWidthFromContent(boolean)
+         * @since
+         */
+        public boolean isMinimumWidthFromContent() {
+            return getState(false).minimumWidthFromContent;
+        }
+
+        /**
          * Sets the maximum width for this column.
          * <p>
          * This defines the maximum allowed pixel width of the column <em>when