Enable setting default alignment for VerticalLayout, HorizontalLayout, GridLayout (#11421)

Change-Id: I56b14a6a027dc700748f2bd7219b47e1134bb56a

3 files changed, 67 insertions, 1 deletions

diff --git a/server/src/com/vaadin/ui/AbstractOrderedLayout.java b/server/src/com/vaadin/ui/AbstractOrderedLayout.java
index 8c2f86926d..b06b2e0871 100644
--- a/server/src/com/vaadin/ui/AbstractOrderedLayout.java
+++ b/server/src/com/vaadin/ui/AbstractOrderedLayout.java
@@ -53,6 +53,8 @@ public abstract class AbstractOrderedLayout extends AbstractLayout implements
      */
     protected LinkedList<Component> components = new LinkedList<Component>();
 
+    private Alignment defaultComponentAlignment = Alignment.TOP_LEFT;
+
     /* Child component alignments */
 
     /**
@@ -147,7 +149,9 @@ public abstract class AbstractOrderedLayout extends AbstractLayout implements
     }
 
     private void componentAdded(Component c) {
-        getState().childData.put(c, new ChildComponentData());
+        ChildComponentData ccd = new ChildComponentData();
+        ccd.alignmentBitmask = getDefaultComponentAlignment().getBitMask();
+        getState().childData.put(c, ccd);
     }
 
     /**
@@ -417,4 +421,26 @@ public abstract class AbstractOrderedLayout extends AbstractLayout implements
     public void setMargin(MarginInfo marginInfo) {
         getState().marginsBitmask = marginInfo.getBitMask();
     }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see com.vaadin.ui.Layout.AlignmentHandler#getDefaultComponentAlignment()
+     */
+    @Override
+    public Alignment getDefaultComponentAlignment() {
+        return defaultComponentAlignment;
+    }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see
+     * com.vaadin.ui.Layout.AlignmentHandler#setDefaultComponentAlignment(com
+     * .vaadin.ui.Alignment)
+     */
+    public void setDefaultComponentAlignment(Alignment defaultAlignment) {
+        defaultComponentAlignment = defaultAlignment;
+    }
+
 }
diff --git a/server/src/com/vaadin/ui/GridLayout.java b/server/src/com/vaadin/ui/GridLayout.java
index e60d9c676a..60664c8937 100644
--- a/server/src/com/vaadin/ui/GridLayout.java
+++ b/server/src/com/vaadin/ui/GridLayout.java
@@ -92,6 +92,7 @@ public class GridLayout extends AbstractLayout implements
 
     private Map<Integer, Float> columnExpandRatio = new HashMap<Integer, Float>();
     private Map<Integer, Float> rowExpandRatio = new HashMap<Integer, Float>();
+    private Alignment defaultComponentAlignment = Alignment.TOP_LEFT;
 
     /**
      * Constructor for a grid of given size (number of columns and rows).
@@ -573,6 +574,7 @@ public class GridLayout extends AbstractLayout implements
                 int row2) {
             this.component = component;
             childData = new ChildComponentData();
+            childData.alignment = getDefaultComponentAlignment().getBitMask();
             childData.column1 = column1;
             childData.row1 = row1;
             childData.column2 = column2;
@@ -1226,4 +1228,25 @@ public class GridLayout extends AbstractLayout implements
         return new MarginInfo(getState().marginsBitmask);
     }
 
+    /*
+     * (non-Javadoc)
+     * 
+     * @see com.vaadin.ui.Layout.AlignmentHandler#getDefaultComponentAlignment()
+     */
+    @Override
+    public Alignment getDefaultComponentAlignment() {
+        return defaultComponentAlignment;
+    }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see
+     * com.vaadin.ui.Layout.AlignmentHandler#setDefaultComponentAlignment(com
+     * .vaadin.ui.Alignment)
+     */
+    public void setDefaultComponentAlignment(Alignment defaultAlignment) {
+        defaultComponentAlignment = defaultAlignment;
+    }
+
 }
diff --git a/server/src/com/vaadin/ui/Layout.java b/server/src/com/vaadin/ui/Layout.java
index cd6ffc42d2..dc16b186f2 100644
--- a/server/src/com/vaadin/ui/Layout.java
+++ b/server/src/com/vaadin/ui/Layout.java
@@ -61,6 +61,23 @@ public interface Layout extends ComponentContainer, Serializable {
          */
         public Alignment getComponentAlignment(Component childComponent);
 
+        /**
+         * Sets the alignment used for new components added to this layout. The
+         * default is {@link Alignment#TOP_LEFT}.
+         * 
+         * @param defaultComponentAlignment
+         *            The new default alignment
+         */
+        public void setDefaultComponentAlignment(
+                Alignment defaultComponentAlignment);
+
+        /**
+         * Returns the alignment used for new components added to this layout
+         * 
+         * @return The default alignment
+         */
+        public Alignment getDefaultComponentAlignment();
+
     }
 
     /**