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Code Issues Releases Wiki Activity

Clean ups to combo box code

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This commit is contained in:
Patrick Simpson 2017-06-29 12:36:56 +02:00
parent a0640739e8
commit af97aae748
1 changed files with 63 additions and 88 deletions
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151
src/AcaciaZPushPlugin/AcaciaZPushPlugin/Controls/KAbstractComboBox.cs
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@ -16,6 +16,9 @@ namespace Acacia.Controls
{
#region Properties
/// <summary>
/// Hide the AutoSize property, it is always enabled
/// </summary>
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
override public bool AutoSize { get { return base.AutoSize; } set { base.AutoSize = value; } }
@ -41,61 +44,22 @@ namespace Acacia.Controls
set { _edit.PlaceholderFont = value; }
}
/// <summary>
/// The control to set in the drop-down
/// </summary>
protected Control DropControl
{
get
{
return _dropControl;
return _dropDown?.Control;
}
set
{
_dropControl = value;
SetupDropDown();
_dropDown = new DropDown(this, value);
}
}
#endregion
#region Components
private KTextBox _edit;
#endregion
#region Init
public KAbstractComboBox()
{
AutoSize = true;
SetupRenderer();
_edit = new KTextBox();
_edit.BorderStyle = BorderStyle.None;
Controls.Add(_edit);
_state.AddControl(_edit);
_edit.TextChanged += _edit_TextChanged;
_edit.LostFocus += _edit_LostFocus;
_edit.PreviewKeyDown += _edit_PreviewKeyDown;
_edit.Leave += _edit_Leave;
_edit.Enter += _edit_Enter;
}
private void _edit_Enter(object sender, EventArgs e)
{
System.Diagnostics.Trace.WriteLine(string.Format("_edit_Enter"));
}
private void _edit_Leave(object sender, EventArgs e)
{
System.Diagnostics.Trace.WriteLine(string.Format("_edit_Leave"));
DroppedDown = false;
}
#endregion
#region Text edit
override public string Text
{
get { return _edit.Text; }
@ -107,6 +71,34 @@ namespace Acacia.Controls
}
}
#endregion
#region Init
public KAbstractComboBox()
{
AutoSize = true;
SetupRenderer();
SetupEdit();
}
#endregion
#region Text edit
private KTextBox _edit;
private void SetupEdit()
{
_edit = new KTextBox();
_edit.BorderStyle = BorderStyle.None;
Controls.Add(_edit);
_state.AddControl(_edit);
_edit.TextChanged += _edit_TextChanged;
_edit.LostFocus += _edit_LostFocus;
_edit.PreviewKeyDown += _edit_PreviewKeyDown;
}
public void FocusEdit()
{
_edit.Select();
@ -117,10 +109,11 @@ namespace Acacia.Controls
switch (e.KeyCode)
{
case Keys.Escape:
// Escape closes the dropdown
// Escape closes the drop-down
if (DroppedDown)
{
DroppedDown = false;
// Grab the keypress to prevent closing a dialog
e.IsInputKey = true;
return;
}
@ -130,7 +123,7 @@ namespace Acacia.Controls
if (!DroppedDown)
{
DroppedDown = true;
e.IsInputKey = false;
e.IsInputKey = true;
return;
}
break;
@ -140,14 +133,9 @@ namespace Acacia.Controls
private void _edit_LostFocus(object sender, EventArgs e)
{
// Close the drop down when losing focus. This also handles the case when another window is selected,
// as that causes the focus to be taken away
DroppedDown = false;
System.Diagnostics.Trace.WriteLine(string.Format("_edit_LostFocus"));
}
protected override void OnGotFocus(EventArgs e)
{
base.OnGotFocus(e);
System.Diagnostics.Trace.WriteLine("OnGotFocus");
}
private void _edit_TextChanged(object sender, EventArgs e)
@ -160,7 +148,7 @@ namespace Acacia.Controls
#region Drop down
/// <summary>
/// Custom drop down. Registers a message filter when shown to close on clicks outside the dropdown.
/// Custom drop down. Registers a message filter when shown to close on clicks outside the drop-down.
/// This is required as the default AutoClose behaviour consumes all keyboard events.
/// </summary>
private class DropDown : ToolStripDropDown, IMessageFilter
@ -185,7 +173,15 @@ namespace Acacia.Controls
private readonly KAbstractComboBox _owner;
public DropDown(KAbstractComboBox owner)
public Control Control
{
get
{
return ((ToolStripControlHost)Items[0]).Control;
}
}
public DropDown(KAbstractComboBox owner, Control control)
{
this._owner = owner;
@ -202,7 +198,7 @@ namespace Acacia.Controls
AutoClose = false;
// Add a host for the control
ToolStripControlHost host = new ToolStripControlHost(owner._dropControl);
ToolStripControlHost host = new ToolStripControlHost(control);
host.Padding = new Padding(0);
host.Margin = new Padding(0);
host.AutoSize = true;
@ -213,6 +209,7 @@ namespace Acacia.Controls
{
base.OnVisibleChanged(e);
// Only register the message filter when it can do something useful
if (Visible)
Application.AddMessageFilter(this);
else
@ -221,6 +218,7 @@ namespace Acacia.Controls
public bool PreFilterMessage(ref Message m)
{
// Handle mouse clicks to close the popup
switch ((WM)m.Msg)
{
case WM.LBUTTONDOWN:
@ -245,10 +243,10 @@ namespace Acacia.Controls
User32.MapWindowPoints(m.HWnd, IntPtr.Zero, ref pt, 1);
}
// Check if the click was inside the dropdown
// Check if the click was inside the drop-down
if (!Bounds.Contains(pt))
{
// Outside the dropdown, check if it was inside the combo box
// Outside the drop-down, check if it was inside the combo box
// Map to the combo box coordinates
User32.MapWindowPoints(IntPtr.Zero, _owner.Handle, ref pt, 1);
@ -263,7 +261,7 @@ namespace Acacia.Controls
}
else
{
// Outside the dropdown, close it
// Outside the drop-down, close it
Close();
}
}
@ -272,26 +270,9 @@ namespace Acacia.Controls
}
private DropDown _dropDown;
private Control _dropControl;
private void SetupDropDown()
{
_dropDown = new DropDown(this);
_dropDown.Closed += _dropDown_Closed;
}
// Cannot use visibility of _dropDown to keep the open state, as clicking on the button already
// hides the popup before the event handler is shown.
private bool _isDroppedDown;
private void _dropDown_Closed(object sender, ToolStripDropDownClosedEventArgs e)
{
_isDroppedDown = false;
}
private void Button_Clicked()
{
System.Diagnostics.Trace.WriteLine("Button_Clicked");
DroppedDown = !DroppedDown;
this._edit.Focus();
}
@ -301,12 +282,12 @@ namespace Acacia.Controls
{
get
{
return _isDroppedDown;
return _dropDown?.Visible == true;
}
set
{
if (value != _isDroppedDown)
if (value != DroppedDown)
{
if (value)
{
@ -316,30 +297,24 @@ namespace Acacia.Controls
{
_dropDown.Close();
}
_isDroppedDown = value;
}
}
}
private void ShowDropDown()
{
// Calculate the dimensions of the dropdown
// Calculate the dimensions of the drop-down
int maxHeight = GetDropDownHeightMax();
int minHeight = GetDropDownHeightMin();
//Size prefSize = new Size(minHeight, maxHeight);
Size prefSize = _dropControl.GetPreferredSize(new Size(Width - _dropDown.Padding.Horizontal, maxHeight - _dropDown.Padding.Vertical));
Size prefSize = DropControl.GetPreferredSize(new Size(Width - _dropDown.Padding.Horizontal, maxHeight - _dropDown.Padding.Vertical));
int width = Util.Bound(prefSize.Width, Width - _dropDown.Padding.Horizontal, Width * 2);
int height = Util.Bound(prefSize.Height, minHeight, maxHeight);
System.Diagnostics.Trace.WriteLine(string.Format("DROPDOWN1: {0} - {1} - {2}", prefSize, width,
((ListBox)_dropControl).ItemHeight));
_dropControl.MaximumSize = _dropControl.MinimumSize = new Size(width, height);
DropControl.MaximumSize = DropControl.MinimumSize = new Size(width, height);
// Show the drop down below the current control
_dropDown.Show(this.PointToScreen(new Point(0, Height - 1)));
//_dropListHost.Height = _dropDown.Height - _dropDown.Padding.Vertical;
System.Diagnostics.Trace.WriteLine(string.Format("DROPDOWN2: {0} - {1} - {2} - {3}: {4}",
_dropDown.Width, 0, _dropControl.Width, width, this.Width));
}
protected abstract int GetDropDownHeightMax();