1 files changed, 152 insertions, 0 deletions
diff --git a/src/com/itmill/toolkit/ui/Alignment.java b/src/com/itmill/toolkit/ui/Alignment.java
new file mode 100644
index 0000000000..6d7ad9accf
--- /dev/null
+++ b/src/com/itmill/toolkit/ui/Alignment.java
@@ -0,0 +1,152 @@
+package com.itmill.toolkit.ui;
+
+import com.itmill.toolkit.terminal.gwt.client.ui.AlignmentInfo.Bits;
+
+/**
+ * Class containing information about alignment of a component. Use the
+ * pre-instantiated classes.
+ */
+public final class Alignment {
+
+    public static final Alignment TOP_RIGHT = new Alignment(Bits.ALIGNMENT_TOP
+            + Bits.ALIGNMENT_RIGHT);
+    public static final Alignment TOP_LEFT = new Alignment(Bits.ALIGNMENT_TOP
+            + Bits.ALIGNMENT_LEFT);
+    public static final Alignment TOP_CENTER = new Alignment(Bits.ALIGNMENT_TOP
+            + Bits.ALIGNMENT_HORIZONTAL_CENTER);
+    public static final Alignment MIDDLE_RIGHT = new Alignment(
+            Bits.ALIGNMENT_VERTICAL_CENTER + Bits.ALIGNMENT_RIGHT);
+    public static final Alignment MIDDLE_LEFT = new Alignment(
+            Bits.ALIGNMENT_VERTICAL_CENTER + Bits.ALIGNMENT_LEFT);
+    public static final Alignment MIDDLE_CENTER = new Alignment(
+            Bits.ALIGNMENT_VERTICAL_CENTER + Bits.ALIGNMENT_HORIZONTAL_CENTER);
+    public static final Alignment BOTTOM_RIGHT = new Alignment(
+            Bits.ALIGNMENT_BOTTOM + Bits.ALIGNMENT_RIGHT);
+    public static final Alignment BOTTOM_LEFT = new Alignment(
+            Bits.ALIGNMENT_BOTTOM + Bits.ALIGNMENT_LEFT);
+    public static final Alignment BOTTOM_CENTER = new Alignment(
+            Bits.ALIGNMENT_BOTTOM + Bits.ALIGNMENT_HORIZONTAL_CENTER);
+
+    private final int bitMask;
+
+    public Alignment(int bitMask) {
+        this.bitMask = bitMask;
+    }
+
+    /**
+     * Returns a bitmask representation of the alignment value. Used internally
+     * by terminal.
+     * 
+     * @return the bitmask representation of the alignment value
+     */
+    public int getBitMask() {
+        return bitMask;
+    }
+
+    /**
+     * Checks if component is aligned to the top of the available space.
+     * 
+     * @return true if aligned top
+     */
+    public boolean isTop() {
+        return (bitMask & Bits.ALIGNMENT_TOP) == Bits.ALIGNMENT_TOP;
+    }
+
+    /**
+     * Checks if component is aligned to the bottom of the available space.
+     * 
+     * @return true if aligned bottom
+     */
+    public boolean isBottom() {
+        return (bitMask & Bits.ALIGNMENT_BOTTOM) == Bits.ALIGNMENT_BOTTOM;
+    }
+
+    /**
+     * Checks if component is aligned to the left of the available space.
+     * 
+     * @return true if aligned left
+     */
+    public boolean isLeft() {
+        return (bitMask & Bits.ALIGNMENT_LEFT) == Bits.ALIGNMENT_LEFT;
+    }
+
+    /**
+     * Checks if component is aligned to the right of the available space.
+     * 
+     * @return true if aligned right
+     */
+    public boolean isRight() {
+        return (bitMask & Bits.ALIGNMENT_RIGHT) == Bits.ALIGNMENT_RIGHT;
+    }
+
+    /**
+     * Checks if component is aligned middle (vertically center) of the
+     * available space.
+     * 
+     * @return true if aligned bottom
+     */
+    public boolean isMiddle() {
+        return (bitMask & Bits.ALIGNMENT_VERTICAL_CENTER) == Bits.ALIGNMENT_VERTICAL_CENTER;
+    }
+
+    /**
+     * Checks if component is aligned center (horizontally) of the available
+     * space.
+     * 
+     * @return true if aligned center
+     */
+    public boolean isCenter() {
+        return (bitMask & Bits.ALIGNMENT_HORIZONTAL_CENTER) == Bits.ALIGNMENT_HORIZONTAL_CENTER;
+    }
+
+    /**
+     * Returns string representation of vertical alignment.
+     * 
+     * @return vertical alignment as CSS value
+     */
+    public String getVerticalAlignment() {
+        if (isBottom()) {
+            return "bottom";
+        } else if (isMiddle()) {
+            return "middle";
+        }
+        return "top";
+    }
+
+    /**
+     * Returns string representation of horizontal alignment.
+     * 
+     * @return horizontal alignment as CSS value
+     */
+    public String getHorizontalAlignment() {
+        if (isRight()) {
+            return "right";
+        } else if (isCenter()) {
+            return "center";
+        }
+        return "left";
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if ((obj == null) || (obj.getClass() != this.getClass())) {
+            return false;
+        }
+        Alignment a = (Alignment) obj;
+        return bitMask == a.bitMask;
+    }
+
+    @Override
+    public int hashCode() {
+        return bitMask;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(bitMask);
+    }
+
+}