1 files changed, 160 insertions, 0 deletions
diff --git a/com_actionbarsherlock/src/com/actionbarsherlock/internal/widget/IcsLinearLayout.java b/com_actionbarsherlock/src/com/actionbarsherlock/internal/widget/IcsLinearLayout.java
new file mode 100644
index 000000000..2edda7264
--- /dev/null
+++ b/com_actionbarsherlock/src/com/actionbarsherlock/internal/widget/IcsLinearLayout.java
@@ -0,0 +1,160 @@
+package com.actionbarsherlock.internal.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.view.View;
+import com.actionbarsherlock.internal.nineoldandroids.widget.NineLinearLayout;
+
+/**
+ * A simple extension of a regular linear layout that supports the divider API
+ * of Android 4.0+.
+ */
+public class IcsLinearLayout extends NineLinearLayout {
+    private static final int[] LinearLayout = new int[] {
+        /* 0 */ android.R.attr.divider,
+        /* 1 */ android.R.attr.showDividers,
+        /* 2 */ android.R.attr.dividerPadding,
+    };
+    private static final int LinearLayout_divider = 0;
+    private static final int LinearLayout_showDividers = 1;
+    private static final int LinearLayout_dividerPadding = 2;
+
+    /**
+     * Don't show any dividers.
+     */
+    public static final int SHOW_DIVIDER_NONE = 0;
+    /**
+     * Show a divider at the beginning of the group.
+     */
+    public static final int SHOW_DIVIDER_BEGINNING = 1;
+    /**
+     * Show dividers between each item in the group.
+     */
+    public static final int SHOW_DIVIDER_MIDDLE = 2;
+    /**
+     * Show a divider at the end of the group.
+     */
+    public static final int SHOW_DIVIDER_END = 4;
+
+
+    private Drawable mDivider;
+    private int mDividerWidth;
+    private int mShowDividers;
+    private int mDividerPadding;
+
+
+    public IcsLinearLayout(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        TypedArray a = context.obtainStyledAttributes(attrs, /*com.android.internal.R.styleable.*/LinearLayout);
+
+        setDividerDrawable(a.getDrawable(/*com.android.internal.R.styleable.*/LinearLayout_divider));
+        mShowDividers = a.getInt(/*com.android.internal.R.styleable.*/LinearLayout_showDividers, SHOW_DIVIDER_NONE);
+        mDividerPadding = a.getDimensionPixelSize(/*com.android.internal.R.styleable.*/LinearLayout_dividerPadding, 0);
+
+        a.recycle();
+    }
+
+    /**
+     * Set a drawable to be used as a divider between items.
+     * @param divider Drawable that will divide each item.
+     * @see #setShowDividers(int)
+     */
+    public void setDividerDrawable(Drawable divider) {
+        if (divider == mDivider) {
+            return;
+        }
+        mDivider = divider;
+        if (divider != null) {
+            mDividerWidth = divider.getIntrinsicWidth();
+        } else {
+            mDividerWidth = 0;
+        }
+        setWillNotDraw(divider == null);
+        requestLayout();
+    }
+
+    /**
+     * Get the width of the current divider drawable.
+     *
+     * @hide Used internally by framework.
+     */
+    public int getDividerWidth() {
+        return mDividerWidth;
+    }
+
+    @Override
+    protected void measureChildWithMargins(View child, int parentWidthMeasureSpec, int widthUsed, int parentHeightMeasureSpec, int heightUsed) {
+        final int index = indexOfChild(child);
+        if (hasDividerBeforeChildAt(index)) {
+            //Account for the divider by pushing everything left
+            ((LayoutParams)child.getLayoutParams()).leftMargin = mDividerWidth;
+        }
+        super.measureChildWithMargins(child, parentWidthMeasureSpec, widthUsed, parentHeightMeasureSpec, heightUsed);
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        if (mDivider != null) {
+            final int count = getChildCount();
+            for (int i = 0; i < count; i++) {
+                final View child = getChildAt(i);
+                if (child != null && child.getVisibility() != GONE) {
+                    if (hasDividerBeforeChildAt(i)) {
+                        final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+                        final int left = child.getLeft() - lp.leftMargin;
+                        drawVerticalDivider(canvas, left);
+                    }
+                }
+            }
+
+            if (hasDividerBeforeChildAt(count)) {
+                final View child = getChildAt(count - 1);
+                int right = 0;
+                if (child == null) {
+                    right = getWidth() - getPaddingRight() - mDividerWidth;
+                } else {
+                    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+                    right = child.getRight() + lp.rightMargin;
+                }
+                drawVerticalDivider(canvas, right);
+            }
+        }
+
+        super.onDraw(canvas);
+    }
+
+    void drawVerticalDivider(Canvas canvas, int left) {
+        mDivider.setBounds(left, getPaddingTop() + mDividerPadding,
+                left + mDividerWidth, getHeight() - getPaddingBottom() - mDividerPadding);
+        mDivider.draw(canvas);
+    }
+
+    /**
+     * Determines where to position dividers between children.
+     *
+     * @param childIndex Index of child to check for preceding divider
+     * @return true if there should be a divider before the child at childIndex
+     * @hide Pending API consideration. Currently only used internally by the system.
+     */
+    protected boolean hasDividerBeforeChildAt(int childIndex) {
+        if (childIndex == 0) {
+            return (mShowDividers & SHOW_DIVIDER_BEGINNING) != 0;
+        } else if (childIndex == getChildCount()) {
+            return (mShowDividers & SHOW_DIVIDER_END) != 0;
+        } else if ((mShowDividers & SHOW_DIVIDER_MIDDLE) != 0) {
+            boolean hasVisibleViewBefore = false;
+            for (int i = childIndex - 1; i >= 0; i--) {
+                if (getChildAt(i).getVisibility() != GONE) {
+                    hasVisibleViewBefore = true;
+                    break;
+                }
+            }
+            return hasVisibleViewBefore;
+        }
+        return false;
+    }
+}