internal DisplayDataChangedEventArgs(ITree tree, VirtualTreeDisplayDataChanges changes, int startRow, int column, int count)
{
myTree = tree;
myChanges = changes;
myStartRow = startRow;
myColumn = column;
myCount = count;
}
/// <summary>
/// All items in the branch have changed
/// </summary>
/// <param name="branch">The branch to modify</param>
public DisplayDataChangedData(IBranch branch)
{
myChanges = VirtualTreeDisplayDataChanges.VisibleElements;
myBranch = branch;
myStartRow = -1;
myColumn = -1;
myCount = 0;
}
/// <summary>
/// One or more items in the branch have changed
/// </summary>
/// <param name="changes">The fields that have changed</param>
/// <param name="branch">The branch that has changed</param>
/// <param name="startRow">The first index in the branch that changed</param>
/// <param name="column">The column to update, or -1 for all columns</param>
/// <param name="count">The number of items changed</param>
public DisplayDataChangedData(VirtualTreeDisplayDataChanges changes, IBranch branch, int startRow, int column, int count)
{
myChanges = changes;
myBranch = branch;
myStartRow = startRow;
myColumn = column;
myCount = count;
}
/// <summary>
/// All items in the branch have changed
/// </summary>
/// <param name="branch">The branch to modify</param>
public DisplayDataChangedData(IBranch branch)
{
myChanges = VirtualTreeDisplayDataChanges.VisibleElements;
myBranch = branch;
myStartRow = -1;
myColumn = -1;
myCount = 0;
}
/// <summary>
/// One or more items in the branch have changed
/// </summary>
/// <param name="changes">The fields that have changed</param>
/// <param name="branch">The branch that has changed</param>
/// <param name="startRow">The first index in the branch that changed</param>
/// <param name="column">The column to update, or -1 for all columns</param>
/// <param name="count">The number of items changed</param>
public DisplayDataChangedData(VirtualTreeDisplayDataChanges changes, IBranch branch, int startRow, int column, int count)
{
myChanges = changes;
myBranch = branch;
myStartRow = startRow;
myColumn = column;
myCount = count;
}
public BranchModificationDisplayData(BranchModificationAction action, ref DisplayDataChangedData changeData)
{
Action = action;
Changes = changeData.Changes;
Branch = changeData.Branch;
Index = changeData.StartRow;
Column = changeData.Column;
Count = changeData.Count;
Flag = false;
}
public BranchModificationDisplayData(BranchModificationAction action, ref DisplayDataChangedData changeData)
{
Action = action;
Changes = changeData.Changes;
Branch = changeData.Branch;
Index = changeData.StartRow;
Column = changeData.Column;
Count = changeData.Count;
Flag = false;
}
internal DisplayDataChangedEventArgs(ITree tree, VirtualTreeDisplayDataChanges changes, int startRow, int column, int count)
{
myTree = tree;
myChanges = changes;
myStartRow = startRow;
myColumn = column;
myCount = count;
}
private void OnDisplayDataChanged(VirtualTreeDisplayDataChanges changes, int row, int column, int count)
{
if (IsHandleCreated)
{
// Normalize column
var nativeColumn = column;
if (column < 0)
{
column = -1;
}
else if (myColumnPermutation != null)
{
column = myColumnPermutation.GetPermutedColumn(column);
}
if (changes != VirtualTreeDisplayDataChanges.AccessibleValue)
// no need to invalidate if AccessibleValue is only flag specified.
{
// UNDONE: Look at changes, only update the appropriate portions
InvalidateItem(row, column, NativeMethods.RedrawWindowFlags.Invalidate, count);
}
if (0 != (changes & VirtualTreeDisplayDataChanges.DependentUIElements))
{
int testIndex;
if (GetStyleFlag(VTCStyleFlags.MultiSelect))
{
if (TreatAsFocused)
{
var iter = CreateSelectedItemEnumerator();
if (iter != null)
{
while (iter.MoveNext())
{
if (column == -1
|| iter.ColumnInTree == column)
{
testIndex = iter.RowInTree;
if ((testIndex >= row)
&& (testIndex < row + count))
{
DoSelectionChanged();
// One call is enough, get out
break;
}
}
}
}
}
}
else
{
if (((column == -1) || (column == mySelectionColumn))
&&
(-1 != (testIndex = CurrentIndex))
&&
((testIndex >= row) && (testIndex < row + count))
&&
(TreatAsFocused))
{
DoSelectionChanged();
}
}
}
if (0 != (changes & VirtualTreeDisplayDataChanges.AccessibleValue)
&& nativeColumn >= 0)
{
// indicates a change in cell value, fire accessibility events. Fire value change event for
// simple cells, and name change event for outline items (because value in an outline item is the depth in the tree).
for (var curRow = row; curRow < (row + count); curRow++)
{
var info = Tree.GetItemInfo(curRow, nativeColumn, true);
if (!info.Blank)
{
if (AccTreeRoot.IsSimpleItem(this, curRow, nativeColumn - info.Column, nativeColumn))
{
if (VirtualTreeAccEvents.ShouldNotify(VirtualTreeAccEvents.eventObjectValueChange, this))
{
VirtualTreeAccEvents.Notify(VirtualTreeAccEvents.eventObjectValueChange, curRow, column, this);
}
}
else
{
if (VirtualTreeAccEvents.ShouldNotify(VirtualTreeAccEvents.eventObjectNameChange, this))
{
VirtualTreeAccEvents.Notify(VirtualTreeAccEvents.eventObjectNameChange, curRow, column, this);
}
}
}
}
}
}
}
