/// <summary>
/// Show safe dialog when Form is about to close
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
if (DiaLogClass.ShowSafeCloseFormDialog(tabControl) == "Cancel")
{
e.Cancel = true;
}
}
/// <summary>
/// close selected tab
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void closeToolStripMenuItem_Click(object sender, EventArgs e)
{
if (tabControl.TabPages.Count > 1) //we don't remove tab page when tabControl has only one tab page
{
//we can use this one line of code below to easily remove selected tab page but it causes flinking
// tabControl.TabPages.Remove(tabControl.SelectedTab);
//Show SaveDialog
string result = DiaLogClass.ShowSafeCloseTabDialog(tabControl.SelectedTab);
if (result == "Cancel")
{
return;
}
//Delete the selected tab page status
TabControlClass.RemoveTabPageStatus(tabControl.SelectedTab);
//that's the reason why use the number lines of code below
//somehow if we set the tab page we are about to remove to another one (in this case we are about to remove selected tab page),
//it doesn't cause the flinking
TabPage tabToRemove = tabControl.SelectedTab;
if (tabControl.SelectedIndex != 0)
{
//set the selectedtab to the first tab page
tabControl.SelectedIndex = tabControl.SelectedIndex - 1;
}
else //if the tab we are about to remove is the first tab, just simply set selectedtab to 1
{
tabControl.SelectedTab = tabControl.TabPages[1];
}
//remove tab
tabControl.TabPages.Remove(tabToRemove);
}
}
/// <summary>
/// close all tap except selected tab
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void closeAllToolStripMenuItem_Click(object sender, EventArgs e)
{
//remove all the tab except the selected Tab
foreach (TabPage tabPage in tabControl.TabPages)
{
if (tabPage != tabControl.SelectedTab)
{
string result = DiaLogClass.ShowSafeCloseTabDialog(tabPage);
if (result == "Cancel")
{
return;
}
//Delete tab status
TabControlClass.RemoveTabPageStatus(tabPage);
//Remove tab Page
tabControl.TabPages.Remove(tabPage);
}
}
}
/// <summary>
/// when user click "x" image
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private static void tabControl_MouseDown(object sender, MouseEventArgs e)
{
//this for loop check if user click mouse at the position of an "x" image
//loop through all tab page to demonstrate which tab tage is being clicked
foreach (TabPage tabPage in tabControl.TabPages)
{
//get the shape of the tab
Rectangle tabRect = tabControl.GetTabRect(tabControl.TabPages.IndexOf(tabPage));
//inflate
tabRect.Inflate(-2, -2);
//get the shape of the "x" image
Rectangle imageRect = new Rectangle(tabRect.Right - CloseImage.Width,
tabRect.Top,
CloseImage.Width,
CloseImage.Height);
//if mouse click in the shape of "x" image
if (imageRect.Contains(e.Location))
{
if ((DiaLogClass.ShowSafeCloseTabDialog(tabPage) == "Cancel"))
{
break;
}
//remove this tab
if (tabControl.TabPages.Count > 1) //if this is the last tab page remaining, don't close it
{
//we use selectedTab variable here because if we click mouse, tabControl will select the clicked tab
//and this if below will always false
//if the tab we are deleting is not the selected tab
if (tabPage != (TabPage)tabControl.Tag)
{
//Important Note: we can change the order of two lines of code below and the main result of us will be the same
//but if we do that, it will cause flinking
tabControl.SelectedTab = (TabPage)tabControl.Tag;
//remove tabpage status
RemoveTabPageStatus(tabPage);
//remove tab page
tabControl.TabPages.Remove(tabPage);
}
else //if the tab we are deleting is the selected tab
{
//if this isn't the first tab
if (tabControl.SelectedIndex != 0)
{
//set the selectedtab to the closest tab page
tabControl.SelectedIndex = tabControl.SelectedIndex - 1;
}
else //if the tab we are about to remove is the first tab, just simply set selectedtab to 1
{
tabControl.SelectedIndex = 1;
}
//remove tabpage status
RemoveTabPageStatus((TabPage)tabControl.Tag);
//remove tab page
tabControl.TabPages.Remove((TabPage)tabControl.Tag);
}
}
break;
}
}
}
/// <summary>
/// save as file
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
{
DiaLogClass.ShowSaveAsDialog(tabControl.SelectedTab);
}
/// <summary>
/// open the choosen file
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
DiaLogClass.ShowOpenDialog(tabControl);
}
