//assumption: sender is either radio button or label with named tag pointing to corresponding button
private void buttonClick(object sender, EventArgs e)
{
if (sender == null)
{
return; //safeguard
}
RadioButtonElement rbt = sender as RadioButtonElement;
if (rbt == null) //it is a text label, not button
{
rbt = (sender as TextLabelElement).Tags[BUTTON_TAG] as RadioButtonElement;
}
rbt.Checked = !rbt.Checked;
if (rbt.Checked)
{
foreach (RadioButtonElement other in m_RadioList)
{
if (other != rbt)
{
other.Checked = false;
}
}
m_CheckedElement = rbt;
}
else
{
m_CheckedElement = null;
}
OnCheckedChanged(EventArgs.Empty);
}
/// <summary>
/// Tries to find a button with specified key and checks it. Returns true if button could be found
/// </summary>
public bool CheckButtonWithKey(object key)
{
m_CheckedElement = null;
foreach (RadioButtonElement other in m_RadioList)
{
other.Checked = false;
}
foreach (RadioButtonElement rbt in m_RadioList)
{
if (equal(rbt.Key, key))
{
rbt.Checked = true;
m_CheckedElement = rbt;
OnCheckedChanged(EventArgs.Empty);
return(true);
}
}
OnCheckedChanged(EventArgs.Empty);
return(false);
}
private void deleteAllButtons()
{
m_CheckedElement = null;
foreach (RadioButtonElement rbt in m_RadioList)
rbt.Dispose();
m_RadioList.Clear();
}
private void rebuild()
{
object wasCheckedKey = null;
if (m_CheckedElement!=null)
wasCheckedKey = m_CheckedElement.Key;
m_CheckedElement = null;
deleteAllButtons();
if (m_Items.Count==0) return;
int fh = Host.CurrentFontHeight;
int clientHeight = Region.Height - Padding.Vertical;
int rowHeight = fh + m_ButtonVSpacing;
int rowCount = clientHeight / rowHeight;
//see if last row fits without trailing spacing
if ((clientHeight-(rowCount*rowHeight))>=fh) rowCount++;
if (rowCount<1)
rowCount =1;
int colCount = (int)(m_Items.Count / rowCount) + (((m_Items.Count % rowCount)>0)? 1 : 0);
int colWidth = (int)((Region.Width- Padding.Horizontal) / colCount);
RadioButtonElement btn;
TextLabelElement lbl;
int x = Region.Left+m_Padding.Left;
IDictionaryEnumerator enm = m_Items.GetEnumerator();
try
{
for (int col = 1; col <= colCount; col++)
{
int y = Region.Top + m_Padding.Top;
for (int row = 1; row <= rowCount; row++)
{
if (!enm.MoveNext()) return;
m_RadioList.Add(btn = new RadioButtonElement(Host));
btn.Region = new Rectangle(x, y, fh, fh);
btn.ZOrder = ZOrder + 1;
btn.MouseClick += buttonClick;
btn.Key = enm.Key;
btn.OwnedElements.Add(lbl = new TextLabelElement(Host));
if (wasCheckedKey!=null)
if (enm.Key==wasCheckedKey)
{
btn.Checked = true;
m_CheckedElement = btn;
}
lbl.Region = new Rectangle(x + fh, y, colWidth - fh, fh);
lbl.ZOrder = btn.ZOrder;
lbl.Text = (enm.Value != null)? " "+enm.Value.ToString() : string.Empty;
lbl.MouseClick += buttonClick;
lbl.Tags[BUTTON_TAG] = btn;
y += fh + m_ButtonVSpacing;
}
x+= colWidth;
}
}
finally
{
FieldControlContextChanged();
}
}
private void deleteAllButtons()
{
m_CheckedElement = null;
foreach (RadioButtonElement rbt in m_RadioList)
rbt.Dispose();
m_RadioList.Clear();
}
//assumption: sender is either radio button or label with named tag pointing to corresponding button
private void buttonClick(object sender, EventArgs e)
{
if (sender==null) return; //safeguard
RadioButtonElement rbt = sender as RadioButtonElement;
if (rbt==null) //it is a text label, not button
{
rbt = (sender as TextLabelElement).Tags[BUTTON_TAG] as RadioButtonElement;
}
rbt.Checked = !rbt.Checked;
if (rbt.Checked)
{
foreach (RadioButtonElement other in m_RadioList)
if (other!=rbt) other.Checked = false;
m_CheckedElement = rbt;
}
else
m_CheckedElement = null;
OnCheckedChanged(EventArgs.Empty);
}
/// <summary>
/// Tries to find a button with specified key and checks it. Returns true if button could be found
/// </summary>
public bool CheckButtonWithKey(object key)
{
m_CheckedElement = null;
foreach (RadioButtonElement other in m_RadioList)
other.Checked = false;
foreach (RadioButtonElement rbt in m_RadioList)
if (equal(rbt.Key, key))
{
rbt.Checked = true;
m_CheckedElement = rbt;
OnCheckedChanged(EventArgs.Empty);
return true;
}
OnCheckedChanged(EventArgs.Empty);
return false;
}
private void rebuild()
{
object wasCheckedKey = null;
if (m_CheckedElement != null)
{
wasCheckedKey = m_CheckedElement.Key;
}
m_CheckedElement = null;
deleteAllButtons();
if (m_Items.Count == 0)
{
return;
}
int fh = Host.CurrentFontHeight;
int clientHeight = Region.Height - Padding.Vertical;
int rowHeight = fh + m_ButtonVSpacing;
int rowCount = clientHeight / rowHeight;
//see if last row fits without trailing spacing
if ((clientHeight - (rowCount * rowHeight)) >= fh)
{
rowCount++;
}
if (rowCount < 1)
{
rowCount = 1;
}
int colCount = (int)(m_Items.Count / rowCount) + (((m_Items.Count % rowCount) > 0)? 1 : 0);
int colWidth = (int)((Region.Width - Padding.Horizontal) / colCount);
RadioButtonElement btn;
TextLabelElement lbl;
int x = Region.Left + m_Padding.Left;
IDictionaryEnumerator enm = m_Items.GetEnumerator();
try
{
for (int col = 1; col <= colCount; col++)
{
int y = Region.Top + m_Padding.Top;
for (int row = 1; row <= rowCount; row++)
{
if (!enm.MoveNext())
{
return;
}
m_RadioList.Add(btn = new RadioButtonElement(Host));
btn.Region = new Rectangle(x, y, fh, fh);
btn.ZOrder = ZOrder + 1;
btn.MouseClick += buttonClick;
btn.Key = enm.Key;
btn.OwnedElements.Add(lbl = new TextLabelElement(Host));
if (wasCheckedKey != null)
{
if (enm.Key == wasCheckedKey)
{
btn.Checked = true;
m_CheckedElement = btn;
}
}
lbl.Region = new Rectangle(x + fh, y, colWidth - fh, fh);
lbl.ZOrder = btn.ZOrder;
lbl.Text = (enm.Value != null)? " " + enm.Value.ToString() : string.Empty;
lbl.MouseClick += buttonClick;
lbl.Tags[BUTTON_TAG] = btn;
y += fh + m_ButtonVSpacing;
}
x += colWidth;
}
}
finally
{
FieldControlContextChanged();
}
}