internal void NewHorizontalGroup(TabGroupLeaf sourceLeaf, bool before)
{
TabGroupSequence tgs = this.Parent as TabGroupSequence;
// We must have a parent sequence!
if (tgs != null)
{
tgs.Direction = Direction.Horizontal;
AddGroupToSequence(tgs, sourceLeaf, before);
}
}
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();
}
}
protected void CompactRemoveEmptyTabSequences(TabbedGroups.CompactFlags flags)
{
// Should we check for empty sequence nodes?
if ((flags & Controls.TabbedGroups.CompactFlags.RemoveEmptyTabSequence) != 0)
{
int count = _children.Count;
for (int index = 0; index < count; index++)
{
// Only interested in sequence entries
if (_children[index].IsSequence)
{
TabGroupSequence tgs = (TabGroupSequence)_children[index];
// Is this an empty sequence node?
if (tgs.Count == 0)
{
// Need to remove the redundant entry
RemoveAt(index);
// Reduce number of entries left to check
count--;
// Move backwards so the next increment stays on same index
index--;
// Mark layout as dirty
if (_tabbedGroups.AutoCalculateDirty)
{
_tabbedGroups.Dirty = true;
}
}
}
}
}
}
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));
}
}
protected void OnPopupMenuDisplay(object sender, CancelEventArgs e)
{
// Remove all existing menu items
_tabControl.ContextPopupMenu.MenuCommands.Clear();
// Add our standard set of menus
_tabControl.ContextPopupMenu.MenuCommands.AddRange(new MenuCommand[] { _mcClose, _mcSep1,
_mcProm, _mcReba,
_mcSep2, _mcHorz,
_mcVert, _mcNext,
_mcPrev });
// Are any pages selected
bool valid = (_tabControl.SelectedIndex != -1);
// Define the latest text string
_mcClose.Text = _tabbedGroups.CloseMenuText;
_mcProm.Text = _tabbedGroups.ProminentMenuText;
_mcReba.Text = _tabbedGroups.RebalanceMenuText;
_mcPrev.Text = _tabbedGroups.MovePreviousMenuText;
_mcNext.Text = _tabbedGroups.MoveNextMenuText;
_mcVert.Text = _tabbedGroups.NewVerticalMenuText;
_mcHorz.Text = _tabbedGroups.NewHorizontalMenuText;
// Only need to close option if the tab has close defined
_mcClose.Visible = _tabControl.ShowClose && valid;
_mcSep1.Visible = _tabControl.ShowClose && valid;
// Update the radio button for prominent
_mcProm.Checked = (_tabbedGroups.ProminentLeaf == this);
// Can only create new group if at least two pages exist
bool split = valid && (_tabControl.TabPages.Count > 1);
bool vertSplit = split;
bool horzSplit = split;
TabGroupSequence tgs = _parent as TabGroupSequence;
// If we are not the only leaf, then can only split in
// the same direction as the group we are in
if (tgs.Count > 1)
{
if (tgs.Direction == Direction.Vertical)
{
vertSplit = false;
}
else
{
horzSplit = false;
}
}
_mcVert.Visible = vertSplit;
_mcHorz.Visible = horzSplit;
// Can only how movement if group exists in that direction
_mcNext.Visible = valid && (_tabbedGroups.NextLeaf(this) != null);
_mcPrev.Visible = valid && (_tabbedGroups.PreviousLeaf(this) != null);
TGContextMenuEventArgs tge = new TGContextMenuEventArgs(this,
_tabControl,
_tabControl.SelectedTab,
_tabControl.ContextPopupMenu);
// Generate event so handlers can add/remove/cancel menu
_tabbedGroups.OnPageContextMenu(tge);
// Pass back cancel value
e.Cancel = tge.Cancel;
}
protected void CompactReduceSameDirection(TabbedGroups.CompactFlags flags)
{
bool changed = false;
// Should we check for same direction sub-sequences?
if ((flags & Controls.TabbedGroups.CompactFlags.ReduceSameDirection) != 0)
{
int count = _children.Count;
for (int index = 0; index < count; index++)
{
// Only interested in sequence entries
if (_children[index].IsSequence)
{
TabGroupSequence tgs = (TabGroupSequence)_children[index];
// Does it run in same direction as ourself?
if (_direction == tgs.Direction)
{
// Remember how much space the base entry occupies
Decimal temp = tgs.RealSpace;
// Find the child control to be replaced
int childPos = _control.Controls.IndexOf(tgs.GroupControl);
// Need to remove a resize bar before the control?
if (childPos > 0)
{
ControlHelper.RemoveAt(_control.Controls, childPos);
}
// Remove the actual control
ControlHelper.RemoveAt(_control.Controls, childPos);
// Remove the intermediate group
_children.RemoveAt(index);
// Reflect change in size
count--;
Decimal totalAllocated = 0m;
// Add in each sub group in turn
int subCount = tgs.Count;
bool firstInsert = true;
for (int subIndex = 0; subIndex < subCount; subIndex++)
{
TabGroupBase tgb = tgs[subIndex];
// What percentage of original space did it have?
Decimal orig = tgb.RealSpace;
// Give it the same proportion of new space
Decimal update = Decimal.Round(temp / 100 * orig, SPACE_PRECISION);
// Keep total actually allocated
totalAllocated += update;
// Use new proportion
tgb.RealSpace = update;
// Update parentage
tgb.SetParent(this);
// Does new child control need a resizing bar?
if ((childPos > 0) && !firstInsert)
{
// Create a resizing bar
ResizeBar bar = new ResizeBar(_direction, this);
_control.Controls.Add(bar);
_control.Controls.SetChildIndex(bar, childPos++);
}
// Add new child control in its place
_control.Controls.Add(tgb.GroupControl);
_control.Controls.SetChildIndex(tgb.GroupControl, childPos++);
// Insert at current position
_children.Insert(index, tgb);
// Adjust variables to reflect increased size
index++;
count++;
firstInsert = false;
}
// Assign any remainder to last group
_children[index - 1].RealSpace += temp - totalAllocated;
// Need controls repositioned
changed = true;
// Mark layout as dirty
if (_tabbedGroups.AutoCalculateDirty)
{
_tabbedGroups.Dirty = true;
}
}
}
}
}
// Change in contents requires entries to be repositioned
if (changed)
{
RepositionChildren();
}
}
protected void CompactReduceSingleEntries(TabbedGroups.CompactFlags flags)
{
bool changed = false;
// Should we check for single instance nodes?
if ((flags & Controls.TabbedGroups.CompactFlags.ReduceSingleEntries) != 0)
{
int count = _children.Count;
for (int index = 0; index < count; index++)
{
// Only interested in sequence entries
if (_children[index].IsSequence)
{
TabGroupSequence tgs = (TabGroupSequence)_children[index];
// Does this entry only have a single child
if (tgs.Count == 1)
{
// Remember how much space the base entry occupies
Decimal temp = tgs.RealSpace;
// Get reference to only child
TabGroupBase child = tgs[0];
// Update parentage
child.SetParent(this);
// Find the child control to be replaced
int childPos = _control.Controls.IndexOf(tgs.GroupControl);
// Remove it
ControlHelper.RemoveAt(_control.Controls, childPos);
// Add new child control in its place
_control.Controls.Add(child.GroupControl);
_control.Controls.SetChildIndex(child.GroupControl, childPos);
// Replace the middle object with the child
_children.RemoveAt(index);
_children.Insert(index, child);
// Restore its correct spacing
child.RealSpace = temp;
// Need controls repositioned
changed = true;
// Mark layout as dirty
if (_tabbedGroups.AutoCalculateDirty)
{
_tabbedGroups.Dirty = true;
}
}
}
}
}
// Change in contents requires entries to be repositioned
if (changed)
{
RepositionChildren();
}
}
public override void LoadFromXml(XmlTextReader xmlIn)
{
// Grab the expected attributes
string rawCount = xmlIn.GetAttribute(0);
string rawUnique = xmlIn.GetAttribute(1);
string rawSpace = xmlIn.GetAttribute(2);
string rawDirection = xmlIn.GetAttribute(3);
// Convert to correct types
int count = Convert.ToInt32(rawCount);
int unique = Convert.ToInt32(rawUnique);
Decimal space = Convert.ToDecimal(rawSpace);
Direction direction = (rawDirection == "Horizontal" ? Direction.Horizontal :
Direction.Vertical);
// Update myself with new values
_unique = unique;
_space = space;
_direction = direction;
// Load each of the children
for (int i = 0; i < count; i++)
{
// Read the next Element
if (!xmlIn.Read())
{
throw new ArgumentException("An element was expected but could not be read in");
}
TabGroupBase newElement = null;
// Is it another sequence?
if (xmlIn.Name == "Sequence")
{
newElement = new TabGroupSequence(_tabbedGroups, this);
}
else if (xmlIn.Name == "Leaf")
{
newElement = new TabGroupLeaf(_tabbedGroups, this);
}
else
{
throw new ArgumentException("Unknown element was encountered");
}
bool expectEndElement = !xmlIn.IsEmptyElement;
// Load its config
newElement.LoadFromXml(xmlIn);
// Add new element to the collection
Add(newElement);
// Do we expect and end element to occur?
if (expectEndElement)
{
// Move past the end element
if (!xmlIn.Read())
{
throw new ArgumentException("Could not read in next expected node");
}
// Check it has the expected name
if (xmlIn.NodeType != XmlNodeType.EndElement)
{
throw new ArgumentException("EndElement expected but not found");
}
}
}
}
