protected virtual IList<ListViewDataItem> CreateItemsInGroups(ListViewPagedDataSource dataSource, bool dataBinding, InsertItemPosition insertPosition, ArrayList keyArray) {
// If this is the first time we're creating the control items, we need
// to locate the groupPlaceholder container.
// If this is a scenario where we are recreating control items, we already
// have the cached groupPlaceholder container.
if (_groupsOriginalIndexOfGroupPlaceholderInContainer == -1) {
_groupsGroupPlaceholderContainer = GetPreparedContainerInfo(this, false, out _groupsOriginalIndexOfGroupPlaceholderInContainer);
}
int groupInsertLocation = _groupsOriginalIndexOfGroupPlaceholderInContainer;
_groupsItemCreatedCount = 0;
int itemInsertLocation = 0;
Control itemPlaceholderContainer = null;
// Reset the selected index if we have a persisted datakey so we
// can figure out what index to select based on the key
ResetPersistedSelectedIndex();
List<ListViewDataItem> items = new List<ListViewDataItem>();
int itemIndex = 0;
int dataItemIndex = 0;
if (insertPosition == InsertItemPosition.FirstItem) {
ListViewContainer groupContainer = new ListViewContainer();
AutoIDControl(groupContainer);
InstantiateGroupTemplate(groupContainer);
AddControlToContainer(groupContainer, _groupsGroupPlaceholderContainer, groupInsertLocation);
groupInsertLocation++;
itemPlaceholderContainer = GetPreparedContainerInfo(groupContainer, true, out itemInsertLocation);
ListViewItem insertItem = CreateInsertItem();
AddControlToContainer(insertItem, itemPlaceholderContainer, itemInsertLocation);
insertItem.DataBind();
itemInsertLocation++;
itemIndex++;
}
foreach (object o in dataSource) {
if (itemIndex % _groupItemCount == 0) {
if (itemIndex != 0 && _groupSeparatorTemplate != null) {
ListViewContainer groupSeparatorContainer = new ListViewContainer();
AutoIDControl(groupSeparatorContainer);
InstantiateGroupSeparatorTemplate(groupSeparatorContainer);
AddControlToContainer(groupSeparatorContainer, _groupsGroupPlaceholderContainer, groupInsertLocation);
groupInsertLocation++;
}
ListViewContainer groupContainer = new ListViewContainer();
AutoIDControl(groupContainer);
InstantiateGroupTemplate(groupContainer);
AddControlToContainer(groupContainer, _groupsGroupPlaceholderContainer, groupInsertLocation);
groupInsertLocation++;
itemPlaceholderContainer = GetPreparedContainerInfo(groupContainer, true, out itemInsertLocation);
}
ListViewDataItem item = CreateDataItem(dataItemIndex + StartRowIndex, dataItemIndex);
if (dataBinding) {
item.DataItem = o;
OrderedDictionary keyTable = new OrderedDictionary(DataKeyNamesInternal.Length);
foreach (string keyName in DataKeyNamesInternal) {
object keyValue = DataBinder.GetPropertyValue(o, keyName);
keyTable.Add(keyName, keyValue);
}
if (keyArray.Count == dataItemIndex) {
keyArray.Add(new DataKey(keyTable, DataKeyNamesInternal));
}
else {
keyArray[dataItemIndex] = new DataKey(keyTable, DataKeyNamesInternal);
}
}
// If persisted selection is enabled and we have a data key then compare it to get the selected index
if (EnablePersistedSelection) {
if (dataItemIndex < keyArray.Count) {
DataKey currentKey = (DataKey)keyArray[dataItemIndex];
SetPersistedDataKey(dataItemIndex, currentKey);
}
}
InstantiateItemTemplate(item, dataItemIndex);
OnItemCreated(new ListViewItemEventArgs(item));
if (itemIndex % _groupItemCount != 0 && _itemSeparatorTemplate != null) {
ListViewContainer itemSeparatorContainer = new ListViewContainer();
InstantiateItemSeparatorTemplate(itemSeparatorContainer);
AddControlToContainer(itemSeparatorContainer, itemPlaceholderContainer, itemInsertLocation);
itemInsertLocation++;
}
AddControlToContainer(item, itemPlaceholderContainer, itemInsertLocation);
itemInsertLocation++;
items.Add(item);
if (dataBinding) {
item.DataBind();
OnItemDataBound(new ListViewItemEventArgs(item));
item.DataItem = null;
}
itemIndex++;
dataItemIndex++;
}
if (insertPosition == InsertItemPosition.LastItem) {
if (itemIndex % _groupItemCount == 0) {
// start a new group
if (itemIndex != 0 && _groupSeparatorTemplate != null) {
ListViewContainer groupSeparatorContainer = new ListViewContainer();
AutoIDControl(groupSeparatorContainer);
InstantiateGroupSeparatorTemplate(groupSeparatorContainer);
AddControlToContainer(groupSeparatorContainer, _groupsGroupPlaceholderContainer, groupInsertLocation);
groupInsertLocation++;
}
ListViewContainer groupContainer = new ListViewContainer();
AutoIDControl(groupContainer);
InstantiateGroupTemplate(groupContainer);
AddControlToContainer(groupContainer, _groupsGroupPlaceholderContainer, groupInsertLocation);
groupInsertLocation++;
itemPlaceholderContainer = GetPreparedContainerInfo(groupContainer, true, out itemInsertLocation);
}
// use the existing group
if (itemIndex % _groupItemCount != 0 && _itemSeparatorTemplate != null) {
ListViewContainer itemSeparatorContainer = new ListViewContainer();
InstantiateItemSeparatorTemplate(itemSeparatorContainer);
AddControlToContainer(itemSeparatorContainer, itemPlaceholderContainer, itemInsertLocation);
itemInsertLocation++;
}
ListViewItem insertItem = CreateInsertItem();
AddControlToContainer(insertItem, itemPlaceholderContainer, itemInsertLocation);
insertItem.DataBind();
itemInsertLocation++;
itemIndex++;
}
// fill in the rest of the items if there's an emptyItemTemplate
if (_emptyItemTemplate != null) {
while (itemIndex % _groupItemCount != 0) {
if (_itemSeparatorTemplate != null) {
ListViewContainer itemSeparatorContainer = new ListViewContainer();
InstantiateItemSeparatorTemplate(itemSeparatorContainer);
AddControlToContainer(itemSeparatorContainer, itemPlaceholderContainer, itemInsertLocation);
itemInsertLocation++;
}
ListViewItem emptyItem = CreateEmptyItem();
AddControlToContainer(emptyItem, itemPlaceholderContainer, itemInsertLocation);
itemInsertLocation++;
itemIndex++;
}
}
_groupsItemCreatedCount = groupInsertLocation - _groupsOriginalIndexOfGroupPlaceholderInContainer;
return items;
}
protected virtual IList<ListViewDataItem> CreateItemsWithoutGroups(ListViewPagedDataSource dataSource, bool dataBinding, InsertItemPosition insertPosition, ArrayList keyArray) {
// If this is the first time we're creating the control items, we need
// to locate the itemPlaceholder container.
// If this is a scenario where we are recreating control items, we already
// have the cached itemPlaceholder container.
if (_noGroupsOriginalIndexOfItemPlaceholderInContainer == -1) {
_noGroupsItemPlaceholderContainer = GetPreparedContainerInfo(this, true, out _noGroupsOriginalIndexOfItemPlaceholderInContainer);
}
// We need to keep track of where we're inserting items and how many items we have
// inserted so that if we need to remove them we know what to do.
int itemInsertLocation = _noGroupsOriginalIndexOfItemPlaceholderInContainer;
List<ListViewDataItem> items = new List<ListViewDataItem>();
int itemIndex = 0;
int dataItemIndex = 0;
if (insertPosition == InsertItemPosition.FirstItem) {
ListViewItem insertItem = CreateInsertItem();
AddControlToContainer(insertItem, _noGroupsItemPlaceholderContainer, itemInsertLocation);
insertItem.DataBind();
itemInsertLocation++;
itemIndex++;
}
// Reset the selected index if we have a persisted datakey so we
// can figure out what index to select based on the key
ResetPersistedSelectedIndex();
foreach (object o in dataSource) {
if (itemIndex != 0 && _itemSeparatorTemplate != null) {
ListViewContainer itemSeparatorContainer = new ListViewContainer();
AutoIDControl(itemSeparatorContainer);
InstantiateItemSeparatorTemplate(itemSeparatorContainer);
AddControlToContainer(itemSeparatorContainer, _noGroupsItemPlaceholderContainer, itemInsertLocation);
itemInsertLocation++;
}
ListViewDataItem item = CreateDataItem(dataItemIndex + dataSource.StartRowIndex, dataItemIndex);
AutoIDControl(item);
if (dataBinding) {
item.DataItem = o;
OrderedDictionary keyTable = new OrderedDictionary(DataKeyNamesInternal.Length);
foreach (string keyName in DataKeyNamesInternal) {
object keyValue = DataBinder.GetPropertyValue(o, keyName);
keyTable.Add(keyName, keyValue);
}
if (keyArray.Count == dataItemIndex) {
keyArray.Add(new DataKey(keyTable, DataKeyNamesInternal));
}
else {
keyArray[dataItemIndex] = new DataKey(keyTable, DataKeyNamesInternal);
}
}
// If persisted selection is enabled and we have a data key then compare it to get the selected index
if (EnablePersistedSelection) {
if (dataItemIndex < keyArray.Count) {
DataKey currentKey = (DataKey)keyArray[dataItemIndex];
SetPersistedDataKey(dataItemIndex, currentKey);
}
}
InstantiateItemTemplate(item, dataItemIndex);
OnItemCreated(new ListViewItemEventArgs(item));
AddControlToContainer(item, _noGroupsItemPlaceholderContainer, itemInsertLocation);
itemInsertLocation++;
items.Add(item);
if (dataBinding) {
item.DataBind();
OnItemDataBound(new ListViewItemEventArgs(item));
item.DataItem = null;
}
dataItemIndex++;
itemIndex++;
}
if (insertPosition == InsertItemPosition.LastItem) {
if (_itemSeparatorTemplate != null) {
ListViewContainer itemSeparatorContainer = new ListViewContainer();
AutoIDControl(itemSeparatorContainer);
InstantiateItemSeparatorTemplate(itemSeparatorContainer);
AddControlToContainer(itemSeparatorContainer, _noGroupsItemPlaceholderContainer, itemInsertLocation);
itemInsertLocation++;
}
ListViewItem insertItem = CreateInsertItem();
AddControlToContainer(insertItem, _noGroupsItemPlaceholderContainer, itemInsertLocation);
insertItem.DataBind();
itemInsertLocation++;
itemIndex++;
}
_noGroupsItemCreatedCount = itemInsertLocation - _noGroupsOriginalIndexOfItemPlaceholderInContainer;
return items;
}
