Left floating header

README.md

@@ -205,6 +205,24 @@ You can call `expand` or `collapse` method to hide or show subitems.
 You can also define a AnimationExecutor which implements `ExpandableStickyListHeadersListView.IAnimationExecutor`,
 and put it into the ExpandableStickyListHeadersListView by `setAnimExecutor` method,if you want more fancy animation when hiding or showing subitems.
 
+###Floating left headers support
+Just like Cyberplus tablet, StickyListHeadersListView supports now floating left header.
+
+<img src="https://github.com/LivioGama/StickyListHeaders/raw/master/cyberplus.png" width="640" />
+
+To use it, in Java code :
+```java
+stickyList.setShowHeaderOnLeft(true);
+```
+
+You can also define a width for the header using styleable `headerWidth` or in the style this way :
+```xml
+<resources>
+    <style name="Theme.MyApp" parent="android:Theme.NoTitleBar">
+        <item name="headerWidth">100</item>
+    </style>
+</resources>
+```
 
 Upgrading from 1.x versions
 ---------------------------

library/res/values/attrs.xml

@@ -30,6 +30,9 @@
         <attr name="android:transcriptMode" />
         <attr name="android:stackFromBottom" />
 
+        <!-- Header attributes -->
+        <attr name="headerWidth" format="dimension" />
+
         <!-- StickyListHeaders attributes -->
         <attr name="hasStickyHeaders" format="boolean" />
         <attr name="isDrawingListUnderStickyHeader" format="boolean" />

library/src/se/emilsjolander/stickylistheaders/AdapterWrapper.java

@@ -25,7 +25,17 @@
  */
 class AdapterWrapper extends BaseAdapter implements StickyListHeadersAdapter {
 
-	interface OnHeaderClickListener {
+    private int mStickyHeaderWidth;
+
+    public void setStickyHeaderWidth(int stickyHeaderWidth) {
+	mStickyHeaderWidth = stickyHeaderWidth;
+    }
+
+    void setShowHeaderOnLeft(boolean showHeaderOnLeft) {
+	mShowHeaderOnLeft = showHeaderOnLeft;
+    }
+
+    interface OnHeaderClickListener {
 		void onHeaderClick(View header, int itemPosition, long headerId);
 	}
 
@@ -35,6 +45,7 @@ interface OnHeaderClickListener {
 	private Drawable mDivider;
 	private int mDividerHeight;
 	private OnHeaderClickListener mOnHeaderClickListener;
+	private boolean mShowHeaderOnLeft;
 	private DataSetObserver mDataSetObserver = new DataSetObserver() {
 
 		@Override
@@ -175,6 +186,8 @@ public WrapperView getView(int position, View convertView, ViewGroup parent) {
 			wv = new WrapperView(mContext);
 		}
 		wv.update(item, header, mDivider, mDividerHeight);
+		wv.setShowHeaderOnLeft(mShowHeaderOnLeft);
+		wv.setHeaderWidth(mStickyHeaderWidth);
 		return wv;
 	}
 

library/src/se/emilsjolander/stickylistheaders/StickyListHeadersListView.java

@@ -90,6 +90,7 @@ void onStickyHeaderChanged(StickyListHeadersListView l, View header,
 
     /* --- Settings --- */
     private boolean mAreHeadersSticky = true;
+    private boolean mShowHeaderOnLeft = false;
     private boolean mClippingToPadding = true;
     private boolean mIsDrawingListUnderStickyHeader = true;
     private int mStickyHeaderTopOffset = 0;
@@ -110,6 +111,8 @@ void onStickyHeaderChanged(StickyListHeadersListView l, View header,
     private AdapterWrapperDataSetObserver mDataSetObserver;
     private Drawable mDivider;
     private int mDividerHeight;
+    private int mStickyHeaderWidth;
+    private int mStickyHeaderHeight;
 
     public StickyListHeadersListView(Context context) {
         this(context, null);
@@ -127,6 +130,7 @@ public StickyListHeadersListView(Context context, AttributeSet attrs, int defSty
 
         // Initialize the wrapped list
         mList = new WrapperViewList(context);
+        mList.setTag(this.getTag());
 
         // null out divider, dividers are handled by adapter so they look good with headers
         mDivider = mList.getDivider();
@@ -213,6 +217,9 @@ public StickyListHeadersListView(Context context, AttributeSet attrs, int defSty
                 mList.setTranscriptMode(a.getInt(R.styleable.StickyListHeadersListView_android_transcriptMode,
                         ListView.TRANSCRIPT_MODE_DISABLED));
 
+                // -- Header attributes --
+                mStickyHeaderWidth = a.getDimensionPixelSize(R.styleable.StickyListHeadersListView_headerWidth, 100);
+
                 // -- StickyListHeaders attributes --
                 mAreHeadersSticky = a.getBoolean(R.styleable.StickyListHeadersListView_hasStickyHeaders, true);
                 mIsDrawingListUnderStickyHeader = a.getBoolean(
@@ -266,8 +273,13 @@ protected void onLayout(boolean changed, int left, int top, int right, int botto
         if (mHeader != null) {
             MarginLayoutParams lp = (MarginLayoutParams) mHeader.getLayoutParams();
             int headerTop = lp.topMargin;
-            mHeader.layout(mPaddingLeft, headerTop, mHeader.getMeasuredWidth()
-                    + mPaddingLeft, headerTop + mHeader.getMeasuredHeight());
+            if (mShowHeaderOnLeft) {
+                mHeader.layout(mPaddingLeft, headerTop, mPaddingLeft + mStickyHeaderWidth,
+                        headerTop + mHeader.getMeasuredHeight());
+            } else {
+                mHeader.layout(mPaddingLeft, headerTop, mHeader.getMeasuredWidth()
+                        + mPaddingLeft, headerTop + mHeader.getMeasuredHeight());
+            }
         }
     }
 
@@ -581,6 +593,10 @@ private int stickyHeaderTop() {
 
     /* ---------- StickyListHeaders specific API ---------- */
 
+    public void setShowHeaderOnLeft(boolean showHeaderOnLeft) {
+        mShowHeaderOnLeft = showHeaderOnLeft;
+    }
+
     public void setAreHeadersSticky(boolean areHeadersSticky) {
         mAreHeadersSticky = areHeadersSticky;
         if (!areHeadersSticky) {
@@ -719,6 +735,8 @@ public void setAdapter(StickyListHeadersAdapter adapter) {
 
         mAdapter.setDivider(mDivider, mDividerHeight);
 
+        mAdapter.setShowHeaderOnLeft(mShowHeaderOnLeft);
+        mAdapter.setStickyHeaderWidth(mStickyHeaderWidth);
         mList.setAdapter(mAdapter);
         clearHeader();
     }
@@ -908,6 +926,10 @@ public void smoothScrollToPositionFromTop(int position, int offset,
         }
     }
 
+    public void performItemClick(View view, int position, long id) {
+        mList.performItemClick(view, position, id);
+    }
+
     public void setSelection(int position) {
         setSelectionFromTop(position, 0);
     }

library/src/se/emilsjolander/stickylistheaders/WrapperView.java

@@ -21,11 +21,21 @@ public class WrapperView extends ViewGroup {
 	int mDividerHeight;
 	View mHeader;
 	int mItemTop;
+	boolean mShowHeaderOnLeft;
+    	private int mHeaderWidth;
 
 	WrapperView(Context c) {
 		super(c);
 	}
 
+	public void setShowHeaderOnLeft(boolean showHeaderOnLeft) {
+		mShowHeaderOnLeft = showHeaderOnLeft;
+	}
+
+	public void setHeaderWidth(int headerWidth) {
+		mHeaderWidth = headerWidth;
+	}
+
 	public boolean hasHeader() {
 		return mHeader != null;
 	}
@@ -65,7 +75,13 @@ void update(View item, View header, Drawable divider, int dividerHeight) {
 			}
 			this.mHeader = header;
 			if (header != null) {
-				addView(header);
+				if (mShowHeaderOnLeft) {
+					ViewGroup.LayoutParams params = header.getLayoutParams();
+					params.width = mHeaderWidth;
+					addView(header, params);
+				} else {
+			 		addView(header);
+				}
 			}
 		}
 
@@ -90,14 +106,20 @@ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 				mHeader.measure(childWidthMeasureSpec,
 						MeasureSpec.makeMeasureSpec(params.height, MeasureSpec.EXACTLY));
 			} else {
-				mHeader.measure(childWidthMeasureSpec,
-						MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
+				if (mShowHeaderOnLeft) {
+					mHeader.measure(MeasureSpec.makeMeasureSpec(mHeaderWidth, MeasureSpec.EXACTLY),
+					MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
+				} else {
+					mHeader.measure(childWidthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
+				}
+			}
+			if (!mShowHeaderOnLeft) {
+				measuredHeight += mHeader.getMeasuredHeight();
 			}
-			measuredHeight += mHeader.getMeasuredHeight();
 		} else if (mDivider != null&&mItem.getVisibility()!=View.GONE) {
 			measuredHeight += mDividerHeight;
 		}
-		
+
 		//measure item
 		ViewGroup.LayoutParams params = mItem.getLayoutParams();
         //enable hiding listview item,ex. toggle off items in group
@@ -109,6 +131,9 @@ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 					MeasureSpec.makeMeasureSpec(params.height, MeasureSpec.EXACTLY));
             measuredHeight += mItem.getMeasuredHeight();
 		} else {
+		 	if (mShowHeaderOnLeft) {
+				childWidthMeasureSpec = childWidthMeasureSpec - mHeaderWidth;
+			}
 			mItem.measure(childWidthMeasureSpec,
 					MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
             measuredHeight += mItem.getMeasuredHeight();
@@ -126,18 +151,31 @@ protected void onLayout(boolean changed, int l, int t, int r, int b) {
 		r = getWidth();
 		b = getHeight();
 
-		if (mHeader != null) {
-			int headerHeight = mHeader.getMeasuredHeight();
-			mHeader.layout(l, t, r, headerHeight);
-			mItemTop = headerHeight;
-			mItem.layout(l, headerHeight, r, b);
-		} else if (mDivider != null) {
-			mDivider.setBounds(l, t, r, mDividerHeight);
-			mItemTop = mDividerHeight;
-			mItem.layout(l, mDividerHeight, r, b);
+		if (mShowHeaderOnLeft) {
+		    if (mDivider != null) {
+			    mDivider.setBounds(mHeaderWidth, t, r, mDividerHeight);
+			    t += mDividerHeight;
+		    }
+		    if (mHeader != null) {
+			    int headerHeight = mHeader.getMeasuredHeight();
+			    mHeader.layout(l, t, mHeaderWidth, headerHeight);
+		    }
+		    mItem.layout(mHeaderWidth, t, r, b);
+		    mItemTop = t;
 		} else {
-			mItemTop = t;
-			mItem.layout(l, t, r, b);
+			if (mHeader != null) {
+				int headerHeight = mHeader.getMeasuredHeight();
+				mHeader.layout(l, t, r, headerHeight);
+				mItemTop = headerHeight;
+				mItem.layout(l, headerHeight, r, b);
+		    } else if (mDivider != null) {
+				mDivider.setBounds(l, t, r, mDividerHeight);
+				mItemTop = mDividerHeight;
+				mItem.layout(l, mDividerHeight, r, b);
+		    } else {
+				mItemTop = t;
+				mItem.layout(l, t, r, b);
+		    }
 		}
 	}
 

sample/src/se/emilsjolander/stickylistheaders/sample/TestActivity.java

@@ -76,6 +76,7 @@ public void run() {
         stickyList.setEmptyView(findViewById(R.id.empty));
         stickyList.setDrawingListUnderStickyHeader(true);
         stickyList.setAreHeadersSticky(true);
+        stickyList.setShowHeaderOnLeft(true);
         stickyList.setAdapter(mAdapter);
 
         mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
@@ -111,7 +112,6 @@ public void run() {
         fastScrollCheckBox = (CheckBox) findViewById(R.id.fast_scroll_checkBox);
         fastScrollCheckBox.setOnCheckedChangeListener(checkBoxListener);
 
-        stickyList.setStickyHeaderTopOffset(-20);
     }
 
     @Override