public Target(Rectangle hotRect, Rectangle drawRect, TabGroupLeaf leaf, TargetActions action)
{
// Define state
_hotRect = hotRect;
_drawRect = drawRect;
_leaf = leaf;
_action = action;
}
public TGCloseRequestEventArgs(TabGroupLeaf tgl, Controls.TabControl tc, Controls.TabPage tp)
{
// Definie initial state
_tgl = tgl;
_tc = tc;
_tp = tp;
_cancel = false;
}
protected void AddGroupToSequence(TabGroupSequence tgs, TabGroupLeaf sourceLeaf, bool before)
{
// Remember original auto compact mode
bool autoCompact = _tabbedGroups.AutoCompact;
// Turn mode off as it interferes with reorganisation
_tabbedGroups.AutoCompact = false;
// Find our index into parent collection
int pos = tgs.IndexOf(this);
TabGroupLeaf newGroup = null;
// New group inserted before existing one?
if (before)
newGroup = tgs.InsertNewLeaf(pos);
else
{
// No, are we at the end of the collection?
if (pos == (tgs.Count - 1))
newGroup = tgs.AddNewLeaf();
else
newGroup = tgs.InsertNewLeaf(pos + 1);
}
// Get tab control for source leaf
Controls.TabControl tc = sourceLeaf.GroupControl as Controls.TabControl;
TabPage tp = tc.SelectedTab;
// Remove page from ourself
tc.TabPages.Remove(tp);
// Add into the new leaf
newGroup.TabPages.Add(tp);
// Reset compacting mode as we have updated the structure
_tabbedGroups.AutoCompact = autoCompact;
// Do we need to compact?
if (_tabbedGroups.AutoCompact)
_tabbedGroups.Compact();
}
internal void NewVerticalGroup(TabGroupLeaf sourceLeaf, bool before)
{
TabGroupSequence tgs = this.Parent as TabGroupSequence;
// We must have a parent sequence!
if (tgs != null)
{
tgs.Direction = Direction.Vertical;
AddGroupToSequence(tgs, sourceLeaf, before);
}
}
internal void MovePageToLeaf(TabGroupLeaf leaf)
{
// Remember original auto compact mode
bool autoCompact = _tabbedGroups.AutoCompact;
// Turn mode off as it interferes with reorganisation
_tabbedGroups.AutoCompact = false;
// Get the requested tab page to be moved to new leaf
TabPage tp = _tabControl.SelectedTab;
// Remove page from ourself
_tabControl.TabPages.Remove(tp);
// Add into the new leaf
leaf.TabPages.Add(tp);
// Make new leaf the active one
_tabbedGroups.ActiveLeaf = leaf;
TabControl tc = leaf.GroupControl as Controls.TabControl;
// Select the newly added page
tc.SelectedTab = tp;
// Reset compacting mode as we have updated the structure
_tabbedGroups.AutoCompact = autoCompact;
// Do we need to compact?
if (_tabbedGroups.AutoCompact)
_tabbedGroups.Compact();
}
public TargetManager(TabbedGroups host, TabGroupLeaf leaf, Controls.TabControl source)
{
// Define state
_host = host;
_leaf = leaf;
_source = source;
_lastTarget = null;
// Create collection to hold generated targets
_targets = new TargetCollection();
// Process each potential leaf in turn
TabGroupLeaf tgl = host.FirstLeaf();
while(tgl != null)
{
// Create all possible targets for this leaf
CreateTargets(tgl);
// Enumerate all leafs
tgl = host.NextLeaf(tgl);
}
}
protected void CreateTargets(TabGroupLeaf leaf)
{
// Grab the underlying tab control
Controls.TabControl tc = leaf.GroupControl as Controls.TabControl;
// Get the total size of the tab control itself in screen coordinates
Rectangle totalSize = tc.RectangleToScreen(tc.ClientRectangle);
// We do not allow a page to be transfered to its own leaf!
if (leaf != _leaf)
{
Rectangle tabsSize = tc.RectangleToScreen(tc.TabsAreaRect);
// Give priority to the tabs area being used to transfer page
_targets.Add(new Target(tabsSize, totalSize, leaf, Target.TargetActions.Transfer));
}
// Can only create new groups if moving relative to a new group
// or we have more than one page in the originating group
if ((leaf != _leaf) || ((leaf == _leaf) && _leaf.TabPages.Count > 1))
{
int horzThird = totalSize.Width / 3;
int vertThird = totalSize.Height / 3;
// Create the four spacing rectangle
Rectangle leftRect = new Rectangle(totalSize.X, totalSize.Y, horzThird, totalSize.Height);
Rectangle rightRect = new Rectangle(totalSize.Right - horzThird, totalSize.Y, horzThird, totalSize.Height);
Rectangle topRect = new Rectangle(totalSize.X, totalSize.Y, totalSize.Width, vertThird);
Rectangle bottomRect = new Rectangle(totalSize.X, totalSize.Bottom - vertThird, totalSize.Width, vertThird);
TabGroupSequence tgs = _leaf.Parent as TabGroupSequence;
// Can only create new groups in same direction, unless this is the only leaf
if (tgs.Count <= 1)
{
// Add each new target
_targets.Add(new Target(leftRect, leftRect, leaf, Target.TargetActions.GroupLeft));
_targets.Add(new Target(rightRect, rightRect, leaf, Target.TargetActions.GroupRight));
_targets.Add(new Target(topRect, topRect, leaf, Target.TargetActions.GroupTop));
_targets.Add(new Target(bottomRect, bottomRect, leaf, Target.TargetActions.GroupBottom));
}
else
{
if (tgs.Direction == Direction.Vertical)
{
_targets.Add(new Target(topRect, topRect, leaf, Target.TargetActions.GroupTop));
_targets.Add(new Target(bottomRect, bottomRect, leaf, Target.TargetActions.GroupBottom));
}
else
{
_targets.Add(new Target(leftRect, leftRect, leaf, Target.TargetActions.GroupLeft));
_targets.Add(new Target(rightRect, rightRect, leaf, Target.TargetActions.GroupRight));
}
}
}
// We do not allow a page to be transfered to its own leaf!
if (leaf != _leaf)
{
// Any remaining space is used to
_targets.Add(new Target(totalSize, totalSize, leaf, Target.TargetActions.Transfer));
}
}
internal void EnforceAtLeastOneLeaf()
{
// Should not add items during compacting operation
if (!_compacting)
{
// Ensure we enfore policy of at least one leaf
if (_atLeastOneLeaf)
{
// Is there at least one?
if (_numLeafs == 0)
{
// No, create a default entry for the root sequence
_root.AddNewLeaf();
// Update the active leaf
_activeLeaf = FirstLeaf();
// Mark layout as dirty
if (_autoCalculateDirty)
_dirty = true;
}
}
}
}
public TabGroupLeaf PreviousLeaf(TabGroupLeaf current)
{
// Get parent of the provided leaf
TabGroupSequence tgs = current.Parent as TabGroupSequence;
// Must have a valid parent sequence
if (tgs != null)
return RecursiveFindLeafInSequence(tgs, current, false);
else
return null;
}
public virtual void OnExternalDrop(TabGroupLeaf tgl, Controls.TabControl tc, DragProvider dp)
{
// Has anyone registered for the event?
if (ExternalDrop != null)
ExternalDrop(this, tgl, tc, dp);
}
public TabGroupLeaf InsertNewLeaf(int index)
{
// Range check index
if (index < 0)
throw new ArgumentOutOfRangeException("index", index, "Insert index must be at least 0");
if (index >= _children.Count)
throw new ArgumentOutOfRangeException("index", index, "Cannot insert after end of current entries");
// Create a new leaf instance with correct back references
TabGroupLeaf tgl = new TabGroupLeaf(_tabbedGroups, this);
// Insert into correct collection position
Insert(index, tgl);
// Return its position in collection
return tgl;
}
public TabGroupLeaf AddNewLeaf()
{
// Create a new leaf instance with correct back references
TabGroupLeaf tgl = new TabGroupLeaf(_tabbedGroups, this);
// Add into the collection
Add(tgl);
// Return its position in collection
return tgl;
}
public void ResetActiveLeaf()
{
ActiveLeaf = null;
}
public void ResetProminentLeaf()
{
ProminentLeaf = null;
}