1 files changed, 24 insertions, 11 deletions

diff --git a/indra/llui/llscrolllistctrl.cpp b/indra/llui/llscrolllistctrl.cpp
index b9a253aac8..36a3b007b6 100644
--- a/indra/llui/llscrolllistctrl.cpp
+++ b/indra/llui/llscrolllistctrl.cpp
@@ -123,6 +123,7 @@ LLScrollListCtrl::Params::Params()
 	sort_ascending("sort_ascending", true),
 	commit_on_keyboard_movement("commit_on_keyboard_movement", true),
 	heading_height("heading_height"),
+	page_lines("page_lines", 0),
 	background_visible("background_visible"),
 	draw_stripes("draw_stripes"),
 	column_padding("column_padding"),
@@ -145,7 +146,7 @@ LLScrollListCtrl::LLScrollListCtrl(const LLScrollListCtrl::Params& p)
 :	LLUICtrl(p),
 	mLineHeight(0),
 	mScrollLines(0),
-	mPageLines(0),
+	mPageLines(p.page_lines),
 	mMaxSelectable(0),
 	mAllowKeyboardMovement(TRUE),
 	mCommitOnKeyboardMovement(p.commit_on_keyboard_movement),
@@ -196,8 +197,6 @@ LLScrollListCtrl::LLScrollListCtrl(const LLScrollListCtrl::Params& p)
 
 	updateLineHeight();
 
-	mPageLines = mLineHeight? (mItemListRect.getHeight()) / mLineHeight : 0;
-
 	// Init the scrollbar
 	static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
 
@@ -214,7 +213,7 @@ LLScrollListCtrl::LLScrollListCtrl(const LLScrollListCtrl::Params& p)
 	sbparams.orientation(LLScrollbar::VERTICAL);
 	sbparams.doc_size(getItemCount());
 	sbparams.doc_pos(mScrollLines);
-	sbparams.page_size(mPageLines);
+	sbparams.page_size( mPageLines ? mPageLines : getItemCount() );
 	sbparams.change_callback(boost::bind(&LLScrollListCtrl::onScrollChange, this, _1, _2));
 	sbparams.follows.flags(FOLLOWS_RIGHT | FOLLOWS_TOP | FOLLOWS_BOTTOM);
 	sbparams.visible(false);
@@ -469,8 +468,12 @@ void LLScrollListCtrl::updateLayout()
 	getChildView("comment_text")->setShape(mItemListRect);
 
 	// how many lines of content in a single "page"
-	mPageLines = mLineHeight? mItemListRect.getHeight() / mLineHeight : 0;
-	BOOL scrollbar_visible = getItemCount() > mPageLines;
+	S32 page_lines =  mLineHeight? mItemListRect.getHeight() / mLineHeight : getItemCount();
+	//if mPageLines is NOT provided display all item
+	if(mPageLines)
+		page_lines = mPageLines;
+
+	BOOL scrollbar_visible = mLineHeight * getItemCount() > mItemListRect.getHeight();
 	if (scrollbar_visible)
 	{
 		// provide space on the right for scrollbar
@@ -479,7 +482,7 @@ void LLScrollListCtrl::updateLayout()
 
 	mScrollbar->setOrigin(getRect().getWidth() - mBorderThickness - scrollbar_size, mItemListRect.mBottom);
 	mScrollbar->reshape(scrollbar_size, mItemListRect.getHeight() + (mDisplayColumnHeaders ? mHeadingHeight : 0));
-	mScrollbar->setPageSize( mPageLines );
+	mScrollbar->setPageSize(page_lines);
 	mScrollbar->setDocSize( getItemCount() );
 	mScrollbar->setVisible(scrollbar_visible);
 
@@ -491,6 +494,9 @@ void LLScrollListCtrl::updateLayout()
 void LLScrollListCtrl::fitContents(S32 max_width, S32 max_height)
 {
 	S32 height = llmin( getRequiredRect().getHeight(), max_height );
+	if(mPageLines)
+		height = llmin( mPageLines * mLineHeight + (mDisplayColumnHeaders ? mHeadingHeight : 0), height );
+
 	S32 width = getRect().getWidth();
 
 	reshape( width, height );
@@ -721,6 +727,12 @@ void LLScrollListCtrl::setHeadingHeight(S32 heading_height)
 	updateLayout();
 
 }
+void LLScrollListCtrl::setPageLines(S32 new_page_lines)
+{
+	mPageLines  = new_page_lines;
+	
+	updateLayout();
+}
 
 BOOL LLScrollListCtrl::selectFirstItem()
 {
@@ -1367,7 +1379,7 @@ void LLScrollListCtrl::drawItems()
 	S32 y = mItemListRect.mTop - mLineHeight;
 
 	// allow for partial line at bottom
-	S32 num_page_lines = mPageLines + 1;
+	S32 num_page_lines = (mPageLines)? mPageLines : getItemCount() + 1;
 
 	LLRect item_rect;
 
@@ -1856,7 +1868,7 @@ LLScrollListItem* LLScrollListCtrl::hitItem( S32 x, S32 y )
 		mLineHeight );
 
 	// allow for partial line at bottom
-	S32 num_page_lines = mPageLines + 1;
+	S32 num_page_lines = (mPageLines)? mPageLines : getItemCount() + 1;
 
 	S32 line = 0;
 	item_list::iterator iter;
@@ -2421,7 +2433,8 @@ void LLScrollListCtrl::scrollToShowSelected()
 	}
 
 	S32 lowest = mScrollLines;
-	S32 highest = mScrollLines + mPageLines;
+	S32 page_lines = (mPageLines)? mPageLines : getItemCount();
+	S32 highest = mScrollLines + page_lines;
 
 	if (index < lowest)
 	{
@@ -2430,7 +2443,7 @@ void LLScrollListCtrl::scrollToShowSelected()
 	}
 	else if (highest <= index)
 	{
-		setScrollPos(index - mPageLines + 1);
+		setScrollPos(index - page_lines + 1);
 	}
 }