/// <summary>
/// 增加一个窗体
/// </summary>
/// <param name="frm"></param>
public void AddAForm(Form frm)
{
var parent = this.ParentForm;
if (!parent.IsMdiContainer)
{
throw new Exception("父窗体要设置成MDI窗体");
}
frm.MdiParent = parent;
frm.FormBorderStyle = FormBorderStyle.None;
frm.ShowInTaskbar = false;
frm.WindowState = FormWindowState.Normal;
frm.Dock = DockStyle.Fill;
FormHeader header = new FormHeader();
header.RenderForm = frm;
frm.FormClosed -= new FormClosedEventHandler(frm_FormClosed);
frm.FormClosed += new FormClosedEventHandler(frm_FormClosed);
frm.Show();
this.pHeader.Controls.Add(header);
_Headers.Add(header);
header.Click -= new EventHandler(header_Click);
header.Click += new EventHandler(header_Click);
header.BorderStyle = BorderStyle.None;
_ActiveHeader = header;
HighLightForm(header);
FreshHeader();
}
/// <summary>
/// 移除一个窗体，如果在列表中存在的话
/// </summary>
/// <param name="frm"></param>
public void RemoveForm(Form frm)
{
foreach (FormHeader header in _Headers)
{
if (object.ReferenceEquals(header.RenderForm, frm))
{
if (object.ReferenceEquals(header, _ActiveHeader)) //如果关闭的是当前的活动窗体
{
int index = _Headers.IndexOf(header);
//如果当前活动窗体处理列表末尾，则前一个窗体变成活动窗体,其它情况下右边一个窗体为活动窗体
if (index == _Headers.Count - 1)
{
index -= 1;
}
else
{
index += 1;
}
if (index >= 0)
{
if (_Headers.Count > 0)
{
HighLightForm(_Headers[index]);
}
}
else
{
_ActiveHeader = null;
}
}
frm.FormClosed -= new FormClosedEventHandler(frm_FormClosed);
_Headers.Remove(header);
header.Click -= new EventHandler(header_Click);
this.pHeader.Controls.Remove(header);
FreshHeader();
break;
}
}
}
/// <summary>
/// 高亮显示窗体
/// </summary>
/// <param name="header"></param>
private void HighLightForm(FormHeader header)
{
foreach (FormHeader h in _Headers)
{
if (object.ReferenceEquals(h, header))
{
h.Active();
header.RenderForm.Activate();
header.RenderForm.Show();
if (!object.ReferenceEquals(h, _ActiveHeader))
{
_ActiveHeader = h;
if (this.FormActivated != null)
{
this.FormActivated(header.RenderForm, EventArgs.Empty);
}
}
}
else
{
h.Deactive();
}
}
}
private void header_Click(object sender, EventArgs e)
{
FormHeader header = sender as FormHeader;
HighLightForm(header);
}