private void ResetMouseState ()
{
clicked_item = null;
box_select_start = Point.Empty;
BoxSelectRectangle = Rectangle.Empty;
prev_selection = null;
box_select_mode = BoxSelect.None;
checking = false;
// Clean these bits in case the mouse buttons were
// released before firing ItemDrag
dragged_item_index = -1;
drag_begin = new Point (-1, -1);
}
private void ItemsMouseDown (object sender, MouseEventArgs me)
{
owner.OnMouseDown (owner.TranslateMouseEventArgs (me));
if (owner.items.Count == 0)
return;
bool box_selecting = false;
Size item_size = owner.ItemSize;
Point pt = new Point (me.X, me.Y);
for (int i = 0; i < owner.items.Count; i++) {
Rectangle item_rect = new Rectangle (owner.GetItemLocation (i), item_size);
if (!item_rect.Contains (pt))
continue;
// Actual item in 'i' position
ListViewItem item = owner.GetItemAtDisplayIndex (i);
if (item.CheckRectReal.Contains (pt)) {
// Don't modify check state if we have only one image
// and if we are in 1.1 profile only take into account
// double clicks
if (owner.StateImageList != null && owner.StateImageList.Images.Count < 2
)
return;
// Generate an extra ItemCheck event when we got two clicks
// (Match weird .Net behaviour)
if (me.Clicks == 2)
item.Checked = !item.Checked;
item.Checked = !item.Checked;
checking = true;
return;
}
if (owner.View == View.Details) {
bool over_text = item.TextBounds.Contains (pt);
if (owner.FullRowSelect) {
clicked_item = item;
bool over_item_column = (me.X > owner.Columns[0].X && me.X < owner.Columns[0].X + owner.Columns[0].Width);
if (!over_text && over_item_column && owner.MultiSelect)
box_selecting = true;
} else if (over_text)
clicked_item = item;
else
owner.SetFocusedItem (i);
} else
clicked_item = item;
break;
}
if (clicked_item != null) {
bool changed = !clicked_item.Selected;
if (me.Button == MouseButtons.Left || (XplatUI.State.ModifierKeys == Keys.None && changed))
owner.SetFocusedItem (clicked_item.DisplayIndex);
if (owner.MultiSelect) {
bool reselect = (!owner.LabelEdit || changed);
if (me.Button == MouseButtons.Left || (XplatUI.State.ModifierKeys == Keys.None && changed))
owner.UpdateMultiSelection (clicked_item.DisplayIndex, reselect);
} else {
clicked_item.Selected = true;
}
if (owner.VirtualMode && changed) {
// Broken event - It's not fired from Item.Selected also
ListViewVirtualItemsSelectionRangeChangedEventArgs args =
new ListViewVirtualItemsSelectionRangeChangedEventArgs (0, owner.items.Count - 1, false);
owner.OnVirtualItemsSelectionRangeChanged (args);
}
// Report clicks only if the item was clicked. On MS the
// clicks are only raised if you click an item
clicks = me.Clicks;
if (me.Clicks > 1) {
if (owner.CheckBoxes)
clicked_item.Checked = !clicked_item.Checked;
} else if (me.Clicks == 1) {
if (owner.LabelEdit && !changed)
BeginEdit (clicked_item); // this is probably not the correct place to execute BeginEdit
}
drag_begin = me.Location;
dragged_item_index = clicked_item.Index;
} else {
if (owner.MultiSelect)
box_selecting = true;
else if (owner.SelectedItems.Count > 0)
owner.SelectedItems.Clear ();
}
if (box_selecting) {
Keys mods = XplatUI.State.ModifierKeys;
if ((mods & Keys.Shift) != 0)
box_select_mode = BoxSelect.Shift;
else if ((mods & Keys.Control) != 0)
box_select_mode = BoxSelect.Control;
else
box_select_mode = BoxSelect.Normal;
box_select_start = pt;
prev_selection = owner.SelectedIndices.List.Clone () as IList;
}
}
