/// <summary>
/// Constructor
/// </summary>
/// <param name="form">form</param>
/// <param name="allowedDock">allowed dock mode</param>
/// <param name="identifier">identifier of the form info</param>
internal DockableFormInfo(Form form, zAllowedDock allowedDock, Guid identifier)
{
if (identifier == Guid.Empty)
{
throw new ArgumentException("Err");
}
_identifier = identifier;
_dockableForm = form;
_allowedDock = allowedDock;
_button = new TabButton(form);
_button.ExplicitDisposing += OnButtonDisposing;
form.GotFocus += OnFormGotFocus;
}
/// <summary>
/// End mouse action
/// </summary>
/// <param name="cancel">cancel</param>
private void EndMouseAction(bool cancel)
{
_isMouseDownInTabButton = false;
if (_isMovingTabButton)
{
if (_isDraggingTabButton)
{
EndButtonDrag(cancel);
}
_isMovingTabButton = false;
_buttonDisplaced = null;
}
IsMouseDownInScrollBackButton = false;
IsMouseDownInScrollNextButton = false;
}
/// <summary>
/// Remove button
/// </summary>
/// <param name="button">button</param>
/// <returns>true if button was removed</returns>
protected bool RemoveButton(TabButton button)
{
if (_buttons.Contains(button) == false)
{
return(false);
}
// If the selected index is the last button index, must decrement the selected index
// to prevent index out of range exception after the count of buttons is updated.
if (SelectedIndex > 0 && SelectedIndex == ButtonsCount - 1)
{
SelectedIndex--;
}
_buttons.Remove(button);
OnButtonRemoved(button);
button.TextChanged -= OnButtonTextChanged;
button.ExplicitDisposing -= OnButtonDisposing;
if (_buttons.Count == 0)
{
if (Disposing == false && IsDisposed == false)
{
using (Graphics graphics = CreateGraphics())
{
UpdatePositions(graphics, false);
}
}
}
else
{
_updatePositionsOnDraw = true;
}
if (Disposing == false && IsDisposed == false)
{
UpdateSize();
Invalidate();
}
return(true);
}
/// <summary>
/// Occurs when the mouse id down
/// </summary>
/// <param name="e">event argument</param>
protected override void OnMouseDown(MouseEventArgs e)
{
_isMouseDownInTabButton = false;
_isMovingTabButton = false;
if (IsMouseOverScrollBackButton)
{
IsMouseDownInScrollBackButton = true;
ScrollBack();
}
else if (IsMouseOverScrollNextButton)
{
IsMouseDownInScrollNextButton = true;
ScrollNext();
}
else if (_captionButtonsBounds.Contains(e.Location))
{
int captionIndex = ButtonsRenderer.GetCaptionButtonIndex(_captionButtonsBounds, e.Location);
OnMouseDownInCaptionButton(captionIndex, e);
}
else
{
int index = 0;
TabButton button = GetButtonFromPoint(e.Location, out index);
if (button != null)
{
SelectedIndex = index;
Invalidate();
_isMouseDownInTabButton = e.Button == MouseButtons.Left;
OnMouseDownInTabButton(button);
}
}
base.OnMouseDown(e);
}
/// <summary>
/// Occurs when tab button is added
/// </summary>
/// <param name="button">button added</param>
protected override void OnButtonAdded(TabButton button)
{
EventHandler<FormEventArgs> handler = FormAdded;
if (handler != null)
{
FormEventArgs args = new FormEventArgs((Form)button.Page);
handler(this, args);
}
}
/// <summary>
/// Occurs when tab button is added
/// </summary>
/// <param name="button">button added</param>
protected override void OnButtonAdded(TabButton button)
{
EventHandler<FormEventArgs> handler = FormAdded;
if (handler != null)
{
DockableFormInfo info = GetPageInfo((Form)button.Page);
FormEventArgs args = new FormEventArgs(info.DockableForm, info.Id);
handler(this, args);
}
}
/// <summary>
/// Checks if can scroll next
/// </summary>
/// <param name="lastButton">last button</param>
/// <param name="scrollNextBounds">scroll-next bounds</param>
/// <returns>true if can scroll next</returns>
internal override bool CanScrollNext(TabButton lastButton, Rectangle scrollNextBounds)
{
return(lastButton.Left + lastButton.Width > scrollNextBounds.Left);
}
/// <summary>
/// Can undo the displacement of the next button (the next button was displaced before)
/// </summary>
/// <param name="displacedButton">displaced button</param>
/// <param name="selectedButton">selected button</param>
/// <param name="mouseLocation">current mouse location</param>
/// <returns>true if can undo</returns>
internal override bool CanUndoDisplaceNext(TabButton displacedButton, TabButton selectedButton, Point mouseLocation)
{
return(true);
}
/// <summary>
/// Begin button drag
/// </summary>
/// <param name="selected">selected button</param>
/// <param name="mousePosition">mouse position</param>
/// <param name="cursor">cursor</param>
/// <returns>true if button drag is started</returns>
protected virtual bool BeginButtonDrag(TabButton selected, Point mousePosition, ref Cursor cursor)
{
return false;
}
/// <summary>
/// Insert a button
/// </summary>
/// <param name="button">button to insert</param>
/// <param name="insertIndex">zero based insert index</param>
protected void InsertButton(TabButton button, int insertIndex)
{
if (button != null && insertIndex >= 0 && insertIndex <= _buttons.Count)
{
_buttons.Insert(insertIndex, button);
OnButtonAdded(button);
button.TextChanged += OnButtonTextChanged;
button.ExplicitDisposing += OnButtonDisposing;
SelectedIndex = insertIndex;
if (_buttons.Count == 1)
{
using (Graphics graphics = CreateGraphics())
{
UpdatePositions(graphics, true);
}
}
else
{
_updatePositionsOnDraw = true;
}
UpdateSize();
Invalidate();
}
}
/// <summary>
/// Occurs when mouse cursor is moved over the panel
/// </summary>
/// <param name="e">event argument</param>
protected override void OnMouseMove(MouseEventArgs e)
{
Cursor cursor = Cursors.Default;
if (_isMouseDownInTabButton && e.Button == MouseButtons.Left)
{
cursor = Cursors.Hand;
if (_isMovingTabButton)
{
TabButton selected = _buttons[SelectedIndex];
if (selected.Contains(e.Location) == false)
{
if (_isDraggingTabButton)
{
ContinueButtonDrag(e.Location, ref cursor);
}
else
{
int index = -1;
TabButton underMouse = GetButtonFromPoint(e.Location, true, out index);
if (underMouse != null)
{
bool displace = false;
if (underMouse == _buttonDisplaced)
{
if (index < SelectedIndex)
{
displace = ButtonsRenderer.CanUndoDisplaceBack(underMouse, selected, e.Location);
}
else if (index > SelectedIndex)
{
displace = ButtonsRenderer.CanUndoDisplaceNext(underMouse, selected, e.Location);
}
}
_buttonDisplaced = underMouse;
if (displace)
{
_buttons[index] = selected;
_buttons[SelectedIndex] = underMouse;
_updatePositionsOnDraw = true;
SelectedIndex = index;
}
}
else
{
_isDraggingTabButton = BeginButtonDrag(selected, e.Location, ref cursor);
}
}
}
}
else
{
_isMovingTabButton = _buttons[SelectedIndex].Contains(e.Location);
_isDraggingTabButton = false;
}
}
else if (GetButtonFromPoint(e.Location) != null)
{
cursor = Cursors.Hand;
}
CheckIfIsMouseOverScrollButtons(e.Location);
if (IsMouseOverScrollBackButton && _firstShownButtonIndex > 0)
{
cursor = Cursors.Hand;
}
else if (IsMouseOverScrollNextButton && _canScrollNext)
{
cursor = Cursors.Hand;
}
int captionIndex = ButtonsRenderer.GetCaptionButtonIndex(_captionButtonsBounds, e.Location);
if (captionIndex < 0 || captionIndex >= ButtonsCount)
{
captionIndex = -1;
}
else
{
cursor = Cursors.Hand;
}
if (_captionButtonIndexUnderMouse != captionIndex)
{
_captionButtonIndexUnderMouse = captionIndex;
OnMouseMoveOverCaptionButton(captionIndex, e);
Invalidate();
}
int buttonIndex = -1;
TabButton buttonUnderMouse = GetButtonFromPoint(e.Location, false, out buttonIndex);
if (buttonUnderMouse != null)
{
OnMouseMoveOverTabButton(buttonUnderMouse);
}
Cursor = cursor;
base.OnMouseMove(e);
}
/// <summary>
/// Occurs when mouse button was moved over a tab button
/// </summary>
/// <param name="buttonUnderMouse">button under mouse</param>
protected override void OnMouseMoveOverTabButton(TabButton buttonUnderMouse)
{
EventHandler<PreviewEventArgs> handler = ShowPreview;
if (handler != null)
{
PreviewEventArgs args = new PreviewEventArgs(new Point(buttonUnderMouse.Left, buttonUnderMouse.Top), (Form)buttonUnderMouse.Page);
handler(this, args);
}
}
/// <summary>
/// Add button
/// </summary>
/// <param name="button">button</param>
protected void AddButton(TabButton button)
{
InsertButton(button, _buttons.Count);
}
/// <summary>
/// Occurs when tab button is added
/// </summary>
/// <param name="button">button added</param>
protected virtual void OnButtonAdded(TabButton button)
{
}
/// <summary>
/// Occurs when tab button is removed
/// </summary>
/// <param name="button">button removed</param>
protected virtual void OnButtonRemoved(TabButton button)
{
}
/// <summary>
/// Occurs when mouse button was pressed while the cursor was over a tab button
/// </summary>
/// <param name="buttonUnderMouse">button under mouse</param>
protected virtual void OnMouseDownInTabButton(TabButton buttonUnderMouse)
{
}
/// <summary>
/// Occurs when mouse button was moved over a tab button
/// </summary>
/// <param name="buttonUnderMouse">button under mouse</param>
protected virtual void OnMouseMoveOverTabButton(TabButton buttonUnderMouse)
{
}
/// <summary>
/// Checks if can scroll next
/// </summary>
/// <param name="lastButton">last button</param>
/// <param name="scrollNextBounds">scroll-next bounds</param>
/// <returns>true if can scroll next</returns>
internal override bool CanScrollNext(TabButton lastButton, Rectangle scrollNextBounds)
{
return lastButton.Top + lastButton.Height > scrollNextBounds.Top;
}
/// <summary>
/// Can undo the displacement of the next button (the next button was displaced before)
/// </summary>
/// <param name="displacedButton">displaced button</param>
/// <param name="selectedButton">selected button</param>
/// <param name="mouseLocation">current mouse location</param>
/// <returns>true if can undo</returns>
internal override bool CanUndoDisplaceNext(TabButton displacedButton, TabButton selectedButton, Point mouseLocation)
{
return true;
}
/// <summary> /// Checks if can scroll next /// </summary> /// <param name="lastButton">last button</param> /// <param name="scrollNextBounds">scroll-next bounds</param> /// <returns>true if can scroll next</returns> internal abstract bool CanScrollNext(TabButton lastButton, Rectangle scrollNextBounds);
/// <summary> /// Checks if can scroll next /// </summary> /// <param name="lastButton">last button</param> /// <param name="scrollNextBounds">scroll-next bounds</param> /// <returns>true if can scroll next</returns> internal abstract bool CanScrollNext(TabButton lastButton, Rectangle scrollNextBounds);
/// <summary>
/// Begin button drag
/// </summary>
/// <param name="selected">selected button</param>
/// <param name="mousePosition">mouse position</param>
/// <param name="cursor">cursor</param>
/// <returns>true if button drag is started</returns>
protected virtual bool BeginButtonDrag(TabButton selected, Point mousePosition, ref Cursor cursor)
{
return(false);
}
/// <summary>
/// Remove button
/// </summary>
/// <param name="button">button</param>
/// <returns>true if button was removed</returns>
protected bool RemoveButton(TabButton button)
{
if (_buttons.Contains(button) == false)
{
return false;
}
if (SelectedIndex >= 0 && SelectedIndex < ButtonsCount)
{
if (_buttons[SelectedIndex] == button && (SelectedIndex == ButtonsCount - 1 && SelectedIndex > 0))
{
SelectedIndex--;
}
}
_buttons.Remove(button);
OnButtonRemoved(button);
button.TextChanged -= OnButtonTextChanged;
if (_buttons.Count == 0)
{
using (Graphics graphics = CreateGraphics())
{
UpdatePositions(graphics, false);
}
}
else
{
_updatePositionsOnDraw = true;
}
UpdateSize();
Invalidate();
return true;
}
/// <summary>
/// Default constructor
/// </summary>
public TabPageView()
{
InitializeComponent();
_button = new TabButton(this);
}
/// <summary>
/// Remove button
/// </summary>
/// <param name="button">button</param>
/// <returns>true if button was removed</returns>
protected bool RemoveButton(TabButton button)
{
if (_buttons.Contains(button) == false)
{
return false;
}
// If the selected index is the last button index, must decrement the selected index
// to prevent index out of range exception after the count of buttons is updated.
if (SelectedIndex > 0 && SelectedIndex == ButtonsCount - 1)
{
SelectedIndex--;
}
_buttons.Remove(button);
OnButtonRemoved(button);
button.TextChanged -= OnButtonTextChanged;
button.ExplicitDisposing -= OnButtonDisposing;
if (_buttons.Count == 0)
{
if (Disposing == false && IsDisposed == false)
{
using (Graphics graphics = CreateGraphics())
{
UpdatePositions(graphics, false);
}
}
}
else
{
_updatePositionsOnDraw = true;
}
if (Disposing == false && IsDisposed == false)
{
UpdateSize();
Invalidate();
}
return true;
}
/// <summary>
/// Checks if can scroll next
/// </summary>
/// <param name="lastButton">last button</param>
/// <param name="scrollNextBounds">scroll-next bounds</param>
/// <returns>true if can scroll next</returns>
internal override bool CanScrollNext(TabButton lastButton, Rectangle scrollNextBounds)
{
return lastButton.Left + lastButton.Width > scrollNextBounds.Left;
}
/// <summary>
/// Default constructor
/// </summary>
public TabPageView()
{
InitializeComponent();
_button = new TabButton(this);
}
/// <summary>
/// Can undo the displacement of the previous button (the previous button was displaced before)
/// </summary>
/// <param name="displacedButton">displaced button</param>
/// <param name="selectedButton">selected button</param>
/// <param name="mouseLocation">current mouse location</param>
/// <returns>true if can undo</returns>
internal override bool CanUndoDisplaceBack(TabButton displacedButton, TabButton selectedButton, Point mouseLocation)
{
return mouseLocation.X < displacedButton.Left + selectedButton.Width;
}
/// <summary>
/// Can undo the displacement of the previous button (the previous button was displaced before)
/// </summary>
/// <param name="displacedButton">displaced button</param>
/// <param name="selectedButton">selected button</param>
/// <param name="mouseLocation">current mouse location</param>
/// <returns>true if can undo</returns>
internal override bool CanUndoDisplaceBack(TabButton displacedButton, TabButton selectedButton, Point mouseLocation)
{
return(mouseLocation.X < displacedButton.Left + selectedButton.Width);
}
/// <summary>
/// Can undo the displacement of the previous button (the previous button was displaced before)
/// </summary>
/// <param name="displacedButton">displaced button</param>
/// <param name="selectedButton">selected button</param>
/// <param name="mouseLocation">current mouse location</param>
/// <returns>true if can undo</returns>
internal override bool CanUndoDisplaceBack(TabButton displacedButton, TabButton selectedButton, Point mouseLocation)
{
return(mouseLocation.Y < displacedButton.Top + selectedButton.Height);
}
/// <summary>
/// Occurs when tab button is removed
/// </summary>
/// <param name="button">button removed</param>
protected override void OnButtonRemoved(TabButton button)
{
Form page = (Form)button.Page;
page.FormClosing -= OnPageClosing;
page.FormClosed -= OnPageClosed;
page.ParentChanged -= OnPageParentChanged;
PagesPanel.Remove(page);
DockableFormInfo info = null;
for (int index = _cachedInfos.Count - 1; index >= 0; index--)
{
if (_cachedInfos[index].Button == button)
{
info = _cachedInfos[index];
_cachedInfos.RemoveAt(index);
info.ExplicitDisposing -= OnInfoDisposing;
info.SelectedChanged -= OnInfoSelectedChanged;
break;
}
}
EventHandler<FormEventArgs> handler = FormRemoved;
if (handler != null)
{
FormEventArgs args = new FormEventArgs(page, info.Id);
handler(this, args);
}
}
/// <summary>
/// Checks if can scroll next
/// </summary>
/// <param name="lastButton">last button</param>
/// <param name="scrollNextBounds">scroll-next bounds</param>
/// <returns>true if can scroll next</returns>
internal override bool CanScrollNext(TabButton lastButton, Rectangle scrollNextBounds)
{
return(lastButton.Top + lastButton.Height > scrollNextBounds.Top);
}
/// <summary>
/// Begin button drag
/// </summary>
/// <param name="selected">selected button</param>
/// <param name="mousePosition">mouse position</param>
/// <param name="cursor">cursor</param>
/// <returns>true if button drag is started</returns>
protected override bool BeginButtonDrag(TabButton selected, Point mousePosition, ref Cursor cursor)
{
EventHandler<FormEventArgs> handler = UndockForm;
if (handler != null)
{
_movedButton = selected;
_movedForm = (Form)_movedButton.Page;
_movedIndex = SelectedIndex;
Point mouseScreenPosition = Control.MousePosition;
FormEventArgs args = new FormEventArgs(_movedForm);
handler(this, args);
RemoveButton(_movedButton);
_movedDecorator = HierarchyUtility.GetFormsDecorator(_movedForm);
_movedDecorator.BeginMovementByMouse(mouseScreenPosition);
cursor = Cursors.SizeAll;
}
return true;
}
/// <summary>
/// End mouse action
/// </summary>
/// <param name="cancel">cancel</param>
private void EndMouseAction(bool cancel)
{
_isMouseDownInTabButton = false;
if (_isMovingTabButton)
{
if (_isDraggingTabButton)
{
EndButtonDrag(cancel);
}
_isMovingTabButton = false;
_buttonDisplaced = null;
}
IsMouseDownInScrollBackButton = false;
IsMouseDownInScrollNextButton = false;
}
/// <summary>
/// Occurs when tab button is removed
/// </summary>
/// <param name="button">button removed</param>
protected override void OnButtonRemoved(TabButton button)
{
PagesPanel.Remove((Form)button.Page);
for (int index = _cachedInfos.Count - 1; index >= 0; index--)
{
if (_cachedInfos[index].Button == button)
{
_cachedInfos.RemoveAt(index);
break;
}
}
EventHandler<FormEventArgs> handler = FormRemoved;
if (handler != null)
{
FormEventArgs args = new FormEventArgs((Form)button.Page);
handler(this, args);
}
}
/// <summary>
/// Occurs when mouse cursor is moved over the panel
/// </summary>
/// <param name="e">event argument</param>
protected override void OnMouseMove(MouseEventArgs e)
{
Cursor cursor = Cursors.Default;
if (_isMouseDownInTabButton && e.Button == MouseButtons.Left)
{
cursor = Cursors.Hand;
if (_isMovingTabButton)
{
TabButton selected = _buttons[SelectedIndex];
if (selected.Contains(e.Location) == false)
{
if (_isDraggingTabButton)
{
ContinueButtonDrag(e.Location, ref cursor);
}
else
{
int index = -1;
TabButton underMouse = GetButtonFromPoint(e.Location, true, out index);
if (underMouse != null)
{
bool displace = false;
if (underMouse == _buttonDisplaced)
{
if (index < SelectedIndex)
{
displace = ButtonsRenderer.CanUndoDisplaceBack(underMouse, selected, e.Location);
}
else if (index > SelectedIndex)
{
displace = ButtonsRenderer.CanUndoDisplaceNext(underMouse, selected, e.Location);
}
}
_buttonDisplaced = underMouse;
if (displace)
{
_buttons[index] = selected;
_buttons[SelectedIndex] = underMouse;
_updatePositionsOnDraw = true;
SelectedIndex = index;
}
}
else
{
_isDraggingTabButton = BeginButtonDrag(selected, e.Location, ref cursor);
}
}
}
}
else
{
_isMovingTabButton = _buttons[SelectedIndex].Contains(e.Location);
_isDraggingTabButton = false;
}
}
else if (GetButtonFromPoint(e.Location) != null)
{
cursor = Cursors.Hand;
}
CheckIfIsMouseOverScrollButtons(e.Location);
if (IsMouseOverScrollBackButton && _firstShownButtonIndex > 0)
{
cursor = Cursors.Hand;
}
else if (IsMouseOverScrollNextButton && _canScrollNext)
{
cursor = Cursors.Hand;
}
int captionIndex = ButtonsRenderer.GetCaptionButtonIndex(_captionButtonsBounds, e.Location);
if (captionIndex < 0 || captionIndex >= ButtonsCount)
{
captionIndex = -1;
}
else
{
cursor = Cursors.Hand;
}
if (_captionButtonIndexUnderMouse != captionIndex)
{
_captionButtonIndexUnderMouse = captionIndex;
OnMouseMoveOverCaptionButton(captionIndex, e);
Invalidate();
}
int buttonIndex = -1;
TabButton buttonUnderMouse = GetButtonFromPoint(e.Location, false, out buttonIndex);
if (buttonUnderMouse != null)
{
OnMouseMoveOverTabButton(buttonUnderMouse);
}
Cursor = cursor;
base.OnMouseMove(e);
}
/// <summary>
/// Can undo the displacement of the previous button (the previous button was displaced before)
/// </summary>
/// <param name="displacedButton">displaced button</param>
/// <param name="selectedButton">selected button</param>
/// <param name="mouseLocation">current mouse location</param>
/// <returns>true if can undo</returns>
internal override bool CanUndoDisplaceBack(TabButton displacedButton, TabButton selectedButton, Point mouseLocation)
{
return mouseLocation.Y < displacedButton.Top + selectedButton.Height;
}
/// <summary>
/// Occurs when mouse button was moved over a tab button
/// </summary>
/// <param name="buttonUnderMouse">button under mouse</param>
protected virtual void OnMouseMoveOverTabButton(TabButton buttonUnderMouse)
{
}
/// <summary>
/// Occurs when mouse button was pressed while the cursor was over a tab button
/// </summary>
/// <param name="buttonUnderMouse">button under mouse</param>
protected override void OnMouseDownInTabButton(TabButton buttonUnderMouse)
{
EventHandler<ControlEventArgs> handler = SelectButton;
if (handler != null)
{
ControlEventArgs args = new ControlEventArgs(buttonUnderMouse.Page);
handler(this, args);
}
}
/// <summary>
/// Occurs when mouse button was pressed while the cursor was over a tab button
/// </summary>
/// <param name="buttonUnderMouse">button under mouse</param>
protected virtual void OnMouseDownInTabButton(TabButton buttonUnderMouse)
{
}
/// <summary> /// Can undo the displacement of the previous button (the previous button was displaced before) /// </summary> /// <param name="displacedButton">displaced button</param> /// <param name="selectedButton">selected button</param> /// <param name="mouseLocation">current mouse location</param> /// <returns>true if can undo</returns> internal abstract bool CanUndoDisplaceBack(TabButton displacedButton, TabButton selectedButton, Point mouseLocation);
/// <summary>
/// Occurs when tab button is removed
/// </summary>
/// <param name="button">button removed</param>
protected virtual void OnButtonRemoved(TabButton button)
{
}
/// <summary> /// Can undo the displacement of the previous button (the previous button was displaced before) /// </summary> /// <param name="displacedButton">displaced button</param> /// <param name="selectedButton">selected button</param> /// <param name="mouseLocation">current mouse location</param> /// <returns>true if can undo</returns> internal abstract bool CanUndoDisplaceBack(TabButton displacedButton, TabButton selectedButton, Point mouseLocation);
/// <summary>
/// Occurs when tab button is added
/// </summary>
/// <param name="button">button added</param>
protected virtual void OnButtonAdded(TabButton button)
{
}
/// <summary>
/// Add button
/// </summary>
/// <param name="button">button</param>
protected void AddButton(TabButton button)
{
InsertButton(button, _buttons.Count);
}
/// <summary>
/// Get the page at given index
/// </summary>
/// <param name="pageIndex">zero based page index</param>
/// <returns>page at given index</returns>
public TabPageView GetPageAt(int pageIndex)
{
TabButton buton = GetButtonAt(pageIndex);
return((TabPageView)buton.Page);
}
