private void SetCurrentSnapshot(HeapSnapshot snapshot)
{
// sanity checks
if (snapshot == null)
{
return;
}
// remove current "Current item"
SnapshotListViewItem currentItem = GetSnapshotItem(SnapshotListViewItemState.Current);
if (currentItem != null)
{
currentItem.State = SnapshotListViewItemState.None;
currentItem.ImageIndex = -1;
// Note: the item must be redrawn when the image is reset to -1
lvSnapshots.RedrawItems(currentItem.Index, currentItem.Index, "force redraw" == null);
}
// update the new "current" item
SnapshotListViewItem item = GetSnapshotItem(snapshot);
item.State = SnapshotListViewItemState.Current;
item.ImageIndex = CurrentImageIndex;
_current = snapshot;
}
private void SetReferenceSnapshot(HeapSnapshot snapshot)
{
// sanity checks
if (snapshot == null)
{
return;
}
// remove current "reference" item
SnapshotListViewItem referenceItem = GetSnapshotItem(SnapshotListViewItemState.Reference);
if (referenceItem != null)
{
referenceItem.State = SnapshotListViewItemState.None;
referenceItem.ImageIndex = -1;
// Note: the item must be redrawn when the image is reset to -1
lvSnapshots.RedrawItems(referenceItem.Index, referenceItem.Index, "force redraw" == null);
}
// update the new "reference" item
SnapshotListViewItem item = GetSnapshotItem(snapshot);
item.State = SnapshotListViewItemState.Reference;
item.ImageIndex = ReferenceImageIndex;
_reference = snapshot;
}
private void lvSnapshots_DoubleClick(object sender, EventArgs e)
{
if (lvSnapshots.SelectedItems.Count > 0)
{
SnapshotListViewItem item = (SnapshotListViewItem)lvSnapshots.SelectedItems[0];
if (item.State == SnapshotListViewItemState.None)
{
SetCurrentSnapshot((HeapSnapshot)item.Tag);
CompareSnapshots();
}
}
}
private void AddSnapshot(HeapSnapshot snapshot)
{
// update the list
SnapshotListViewItem lvSnapshot = new SnapshotListViewItem();
lvSnapshot.Tag = snapshot;
lvSnapshot.SubItems.Add(snapshot.ObjectCount.ToString("#,#"));
lvSnapshot.SubItems.Add(snapshot.Size.ToString("#,#"));
lvSnapshots.Items.Add(lvSnapshot);
// update the chart
chartCount.Series["Series2"].Points.AddY(snapshot.ObjectCount);
chartSize.Series["Series1"].Points.AddY(snapshot.Size);
}
private void btnSetReference_Click(object sender, EventArgs e)
{
if (lvSnapshots.SelectedItems.Count == 0)
{
MessageBox.Show("You first have to select a snapshot", "Changing Reference snapshot", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// sanity checks
SnapshotListViewItem item = (SnapshotListViewItem)lvSnapshots.SelectedItems[0];
if (item.State == SnapshotListViewItemState.None)
{
SetReferenceSnapshot((HeapSnapshot)lvSnapshots.SelectedItems[0].Tag);
CompareSnapshots();
}
}
private void lvSnapshots_KeyUp(object sender, KeyEventArgs e)
{
// only handle the DEL key
if (e.KeyCode != Keys.Delete)
{
return;
}
if (lvSnapshots.SelectedItems.Count > 0)
{
SnapshotListViewItem item = (SnapshotListViewItem)lvSnapshots.SelectedItems[0];
if (item.State == SnapshotListViewItemState.None)
{
int index = lvSnapshots.Items.IndexOf(item);
lvSnapshots.Items.Remove(item);
// update the chart
chartCount.Series["Series2"].Points.RemoveAt(index);
chartSize.Series["Series1"].Points.RemoveAt(index);
}
}
}
