/// <summary>
/// Starts a find operation using the specified find data.
/// </summary>
/// <param name="owner">The dialog owner.</param>
/// <param name="findData">The data to find.</param>
/// <param name="findMode">Whether to find next, previous, or display a dialog.</param>
/// <returns>True if the find text was found and selected. False otherwise.</returns>
public bool Find(IWin32Window owner, FindData findData, FindMode findMode)
{
this.Data = findData;
// Use this.Data instead of findData in case the user passed in null.
using (IFindDialog dlg = this.Data.CreateFindDialog())
{
bool result;
switch (findMode)
{
case FindMode.ShowDialog:
result = this.Find(owner, dlg);
break;
case FindMode.FindPrevious:
result = this.FindPrevious(owner, dlg);
break;
default:
result = this.FindNext(owner, dlg);
break;
}
return(result);
}
}
/// <summary>
/// Finds the specified text in the target.
/// </summary>
/// <param name="findData">The text to search for.</param>
/// <param name="findMode">Whether to find next, previous, or display a dialog.</param>
/// <returns>True if the find text was found and selected. False otherwise.</returns>
public bool Find(FindData findData, FindMode findMode)
{
TextBoxFinder finder = new(this);
bool result = finder.Find(this, findData, findMode);
return(result);
}
/// <summary>
/// Used to display the Find dialog with the given data.
/// </summary>
/// <param name="owner">The dialog owner.</param>
/// <param name="data">The find data.</param>
/// <returns>True if OK was pressed.</returns>
public bool Execute(IWin32Window owner, FindData data)
{
this.Text = data.Caption;
this.findText.Text = data.Text;
this.matchCase.Checked = data.MatchCase;
this.searchUp.Checked = data.SearchUp;
bool result = false;
if (this.ShowDialog(owner) == DialogResult.OK)
{
data.Text = this.findText.Text;
data.MatchCase = this.matchCase.Checked;
data.SearchUp = this.searchUp.Checked;
result = true;
}
return(result);
}
/// <summary>
/// Called to execute the dialog. This allows you to do custom actions before
/// and after the dialog is executed.
/// </summary>
/// <param name="findDialog">The dialog to display.</param>
/// <param name="owner">The dialog owner.</param>
/// <param name="findData">The find data.</param>
/// <returns>True if OK was pressed.</returns>
protected virtual bool OnDialogExecute(IFindDialog findDialog, IWin32Window owner, FindData findData)
{
bool result = findDialog.Execute(owner, findData);
return(result);
}
/// <summary>
/// Handles displaying the find dialog.
/// </summary>
/// <param name="findDialog">The dialog to display.</param>
/// <param name="owner">The dialog owner.</param>
/// <param name="findData">The find data.</param>
/// <returns>True if the user pressed OK.</returns>
protected override bool OnDialogExecute(IFindDialog findDialog, IWin32Window owner, FindData findData)
{
// Initialize the find text from the selection.
string?oldFindText = null;
if (this.textBox.SelectionLength > 0)
{
// Only use the selection if it is one line or less.
string selectedText = this.textBox.SelectedText;
if (selectedText.IndexOf('\n') < 0)
{
oldFindText = findData.Text;
findData.Text = this.textBox.SelectedText;
}
}
// Call the base method to display the dialog.
bool result = base.OnDialogExecute(findDialog, owner, findData);
// If they canceled, then we may need to restore the old find text.
if (!result && oldFindText != null)
{
findData.Text = oldFindText;
}
return(result);
}
