1 files changed, 299 insertions, 0 deletions
diff --git a/xbmc/guilib/GUIListContainer.cpp b/xbmc/guilib/GUIListContainer.cpp
new file mode 100644
index 0000000..b078263
--- /dev/null
+++ b/xbmc/guilib/GUIListContainer.cpp
@@ -0,0 +1,299 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "GUIListContainer.h"
+
+#include "GUIListItemLayout.h"
+#include "GUIMessage.h"
+#include "input/Key.h"
+#include "utils/StringUtils.h"
+
+CGUIListContainer::CGUIListContainer(int parentID, int controlID, float posX, float posY, float width, float height, ORIENTATION orientation, const CScroller& scroller, int preloadItems)
+    : CGUIBaseContainer(parentID, controlID, posX, posY, width, height, orientation, scroller, preloadItems)
+{
+  ControlType = GUICONTAINER_LIST;
+  m_type = VIEW_TYPE_LIST;
+}
+
+CGUIListContainer::CGUIListContainer(const CGUIListContainer& other) : CGUIBaseContainer(other)
+{
+}
+
+CGUIListContainer::~CGUIListContainer(void) = default;
+
+bool CGUIListContainer::OnAction(const CAction &action)
+{
+  switch (action.GetID())
+  {
+  case ACTION_PAGE_UP:
+    {
+      if (GetOffset() == 0)
+      { // already on the first page, so move to the first item
+        SetCursor(0);
+      }
+      else
+      { // scroll up to the previous page
+        Scroll( -m_itemsPerPage);
+      }
+      return true;
+    }
+    break;
+  case ACTION_PAGE_DOWN:
+    {
+      if (GetOffset() == (int)m_items.size() - m_itemsPerPage || (int)m_items.size() < m_itemsPerPage)
+      { // already at the last page, so move to the last item.
+        SetCursor(m_items.size() - GetOffset() - 1);
+      }
+      else
+      { // scroll down to the next page
+        Scroll(m_itemsPerPage);
+      }
+      return true;
+    }
+    break;
+    // smooth scrolling (for analog controls)
+  case ACTION_SCROLL_UP:
+    {
+      m_analogScrollCount += action.GetAmount() * action.GetAmount();
+      bool handled = false;
+      while (m_analogScrollCount > 0.4f)
+      {
+        handled = true;
+        m_analogScrollCount -= 0.4f;
+        if (GetOffset() > 0 && GetCursor() <= m_itemsPerPage / 2)
+        {
+          Scroll(-1);
+        }
+        else if (GetCursor() > 0)
+        {
+          SetCursor(GetCursor() - 1);
+        }
+      }
+      return handled;
+    }
+    break;
+  case ACTION_SCROLL_DOWN:
+    {
+      m_analogScrollCount += action.GetAmount() * action.GetAmount();
+      bool handled = false;
+      while (m_analogScrollCount > 0.4f)
+      {
+        handled = true;
+        m_analogScrollCount -= 0.4f;
+        if (GetOffset() + m_itemsPerPage < (int)m_items.size() && GetCursor() >= m_itemsPerPage / 2)
+        {
+          Scroll(1);
+        }
+        else if (GetCursor() < m_itemsPerPage - 1 && GetOffset() + GetCursor() < (int)m_items.size() - 1)
+        {
+          SetCursor(GetCursor() + 1);
+        }
+      }
+      return handled;
+    }
+    break;
+  }
+  return CGUIBaseContainer::OnAction(action);
+}
+
+bool CGUIListContainer::OnMessage(CGUIMessage& message)
+{
+  if (message.GetControlId() == GetID() )
+  {
+    if (message.GetMessage() == GUI_MSG_LABEL_RESET)
+    {
+      SetCursor(0);
+      SetOffset(0);
+      m_scroller.SetValue(0);
+    }
+  }
+  return CGUIBaseContainer::OnMessage(message);
+}
+
+bool CGUIListContainer::MoveUp(bool wrapAround)
+{
+  if (GetCursor() > 0)
+  {
+    SetCursor(GetCursor() - 1);
+  }
+  else if (GetCursor() == 0 && GetOffset())
+  {
+    ScrollToOffset(GetOffset() - 1);
+  }
+  else if (wrapAround)
+  {
+    if (!m_items.empty())
+    { // move 2 last item in list, and set our container moving up
+      int offset = m_items.size() - m_itemsPerPage;
+      if (offset < 0) offset = 0;
+      SetCursor(m_items.size() - offset - 1);
+      ScrollToOffset(offset);
+      SetContainerMoving(-1);
+    }
+  }
+  else
+    return false;
+  return true;
+}
+
+bool CGUIListContainer::MoveDown(bool wrapAround)
+{
+  if (GetOffset() + GetCursor() + 1 < (int)m_items.size())
+  {
+    if (GetCursor() + 1 < m_itemsPerPage)
+    {
+      SetCursor(GetCursor() + 1);
+    }
+    else
+    {
+      ScrollToOffset(GetOffset() + 1);
+    }
+  }
+  else if(wrapAround)
+  { // move first item in list, and set our container moving in the "down" direction
+    SetCursor(0);
+    ScrollToOffset(0);
+    SetContainerMoving(1);
+  }
+  else
+    return false;
+  return true;
+}
+
+// scrolls the said amount
+void CGUIListContainer::Scroll(int amount)
+{
+  // increase or decrease the offset
+  int offset = GetOffset() + amount;
+  if (offset > (int)m_items.size() - m_itemsPerPage)
+  {
+    offset = m_items.size() - m_itemsPerPage;
+  }
+  if (offset < 0) offset = 0;
+  ScrollToOffset(offset);
+}
+
+void CGUIListContainer::ValidateOffset()
+{
+  if (!m_layout) return;
+  // first thing is we check the range of our offset
+  // don't validate offset if we are scrolling in case the tween image exceed <0, 1> range
+  int minOffset, maxOffset;
+  GetOffsetRange(minOffset, maxOffset);
+  if (GetOffset() > maxOffset || (!m_scroller.IsScrolling() && m_scroller.GetValue() > maxOffset * m_layout->Size(m_orientation)))
+  {
+    SetOffset(std::max(0, maxOffset));
+    m_scroller.SetValue(GetOffset() * m_layout->Size(m_orientation));
+  }
+  if (GetOffset() < 0 || (!m_scroller.IsScrolling() && m_scroller.GetValue() < 0))
+  {
+    SetOffset(0);
+    m_scroller.SetValue(0);
+  }
+}
+
+void CGUIListContainer::SetCursor(int cursor)
+{
+  if (cursor > m_itemsPerPage - 1) cursor = m_itemsPerPage - 1;
+  if (cursor < 0) cursor = 0;
+  if (!m_wasReset)
+    SetContainerMoving(cursor - GetCursor());
+  CGUIBaseContainer::SetCursor(cursor);
+}
+
+void CGUIListContainer::SelectItem(int item)
+{
+  // Check that our offset is valid
+  ValidateOffset();
+  // only select an item if it's in a valid range
+  if (item >= 0 && item < (int)m_items.size())
+  {
+    // Select the item requested
+    if (item >= GetOffset() && item < GetOffset() + m_itemsPerPage)
+    { // the item is on the current page, so don't change it.
+      SetCursor(item - GetOffset());
+    }
+    else if (item < GetOffset())
+    { // item is on a previous page - make it the first item on the page
+      SetCursor(0);
+      ScrollToOffset(item);
+    }
+    else // (item >= GetOffset()+m_itemsPerPage)
+    { // item is on a later page - make it the last item on the page
+      SetCursor(m_itemsPerPage - 1);
+      ScrollToOffset(item - GetCursor());
+    }
+  }
+}
+
+int CGUIListContainer::GetCursorFromPoint(const CPoint &point, CPoint *itemPoint) const
+{
+  if (!m_focusedLayout || !m_layout)
+    return -1;
+
+  int row = 0;
+  float pos = (m_orientation == VERTICAL) ? point.y : point.x;
+  while (row < m_itemsPerPage + 1)  // 1 more to ensure we get the (possible) half item at the end.
+  {
+    const CGUIListItemLayout *layout = (row == GetCursor()) ? m_focusedLayout : m_layout;
+    if (pos < layout->Size(m_orientation) && row + GetOffset() < (int)m_items.size())
+    { // found correct "row" -> check horizontal
+      if (!InsideLayout(layout, point))
+        return -1;
+
+      if (itemPoint)
+        *itemPoint = m_orientation == VERTICAL ? CPoint(point.x, pos) : CPoint(pos, point.y);
+      return row;
+    }
+    row++;
+    pos -= layout->Size(m_orientation);
+  }
+  return -1;
+}
+
+bool CGUIListContainer::SelectItemFromPoint(const CPoint &point)
+{
+  CPoint itemPoint;
+  int row = GetCursorFromPoint(point, &itemPoint);
+  if (row < 0)
+    return false;
+
+  SetCursor(row);
+  CGUIListItemLayout *focusedLayout = GetFocusedLayout();
+  if (focusedLayout)
+    focusedLayout->SelectItemFromPoint(itemPoint);
+  return true;
+}
+
+//#ifdef GUILIB_PYTHON_COMPATIBILITY
+CGUIListContainer::CGUIListContainer(int parentID, int controlID, float posX, float posY, float width, float height,
+                                 const CLabelInfo& labelInfo, const CLabelInfo& labelInfo2,
+                                 const CTextureInfo& textureButton, const CTextureInfo& textureButtonFocus,
+                                 float textureHeight, float itemWidth, float itemHeight, float spaceBetweenItems)
+: CGUIBaseContainer(parentID, controlID, posX, posY, width, height, VERTICAL, 200, 0)
+{
+  m_layouts.emplace_back();
+  m_layouts.back().CreateListControlLayouts(width, textureHeight + spaceBetweenItems, false, labelInfo, labelInfo2, textureButton, textureButtonFocus, textureHeight, itemWidth, itemHeight, "", "");
+  std::string condition = StringUtils::Format("control.hasfocus({})", controlID);
+  std::string condition2 = "!" + condition;
+  m_focusedLayouts.emplace_back();
+  m_focusedLayouts.back().CreateListControlLayouts(width, textureHeight + spaceBetweenItems, true, labelInfo, labelInfo2, textureButton, textureButtonFocus, textureHeight, itemWidth, itemHeight, condition2, condition);
+  m_height = floor(m_height / (textureHeight + spaceBetweenItems)) * (textureHeight + spaceBetweenItems);
+  ControlType = GUICONTAINER_LIST;
+}
+//#endif
+
+bool CGUIListContainer::HasNextPage() const
+{
+  return (GetOffset() != (int)m_items.size() - m_itemsPerPage && (int)m_items.size() >= m_itemsPerPage);
+}
+
+bool CGUIListContainer::HasPreviousPage() const
+{
+  return (GetOffset() > 0);
+}