/// <summary>
/// Expands selection to file end.
/// </summary>
public static void SelectToFileEnd(IUserInterface ui)
{
// change selection
CaretMoveLogic.SelectTo(CaretMoveLogic.Calc_FileEnd, ui);
// update desired column
ui.View.SetDesiredColumn();
}
/// <summary>
/// Expands selection to the first non-whitespace char at the line.
/// </summary>
public static void SelectToLineHeadSmart(IUserInterface ui)
{
// change selection
CaretMoveLogic.SelectTo(CaretMoveLogic.Calc_LineHeadSmart, ui);
// update desired column
ui.View.SetDesiredColumn();
}
/// <summary>
/// Deletes one word before caret if nothing was selected, otherwise delete selection.
/// </summary>
public static void BackSpaceWord(IUserInterface ui)
{
var doc = ui.Document;
var view = ui.View as IViewInternal;
// do nothing if the document is read-only
if (doc.IsReadOnly)
{
Plat.Inst.MessageBeep();
return;
}
// switch logic according to selection state
if (doc.RectSelectRanges != null)
{
//--- case of rectangle selection ---
doc.BeginUndo();
doc.DeleteRectSelectText();
doc.EndUndo();
ui.View.Invalidate();
}
else if (doc.AnchorIndex != doc.CaretIndex)
{
//--- case of normal selection ---
doc.Replace(String.Empty);
}
else
{
//--- case of no selection ---
// if the caret is at document head, there is no chars to delete
if (doc.CaretIndex <= 0)
{
Plat.Inst.MessageBeep();
return;
}
// delete between previous word start position and the caret position
int prevWordIndex = CaretMoveLogic.Calc_PrevWord(view);
doc.Replace(String.Empty, prevWordIndex, doc.CaretIndex);
}
// update desired column
if (ui.UsesStickyCaret == false)
{
view.SetDesiredColumn();
}
view.ScrollToCaret();
}
/// <summary>
/// Deletes one word after caret if nothing was selected, otherwise delete selection.
/// </summary>
public static void DeleteWord(IUserInterface ui)
{
var doc = ui.Document;
var view = ui.View as IViewInternal;
// do nothing if the document is read-only
if (doc.IsReadOnly)
{
Plat.Inst.MessageBeep();
return;
}
// switch logic according to selection state
if (doc.RectSelectRanges != null)
{
//--- case of rectangle selection ---
doc.BeginUndo();
doc.DeleteRectSelectText();
doc.EndUndo();
ui.View.Invalidate();
}
else if (doc.AnchorIndex != doc.CaretIndex)
{
//--- case of normal selection ---
doc.Replace(String.Empty);
}
else
{
//--- case of no selection ---
int nextWordIndex = CaretMoveLogic.Calc_NextWord(view);
if (nextWordIndex == doc.Length && doc.CaretIndex == nextWordIndex)
{
Plat.Inst.MessageBeep();
return;
}
// delete char(s).
doc.Replace(String.Empty, doc.CaretIndex, nextWordIndex);
}
// update desired column
if (ui.UsesStickyCaret == false)
{
view.SetDesiredColumn();
}
view.ScrollToCaret();
}
/// <summary>
/// Moves caret to next word.
/// </summary>
public static void MoveToNextWord(IUserInterface ui)
{
Document doc = ui.View.Document;
int selBegin, selEnd;
// if there are something selected, release selection
doc.GetSelection(out selBegin, out selEnd);
if (selEnd != selBegin)
{
doc.SetSelection(doc.CaretIndex, doc.CaretIndex);
}
// then, move caret
CaretMoveLogic.MoveCaret(CaretMoveLogic.Calc_NextWord, ui);
// update desired column
ui.View.SetDesiredColumn();
}
/// <summary>
/// Moves caret to left.
/// </summary>
public static void MoveLeft(IUserInterface ui)
{
IView view = ui.View;
int selBegin, selEnd;
// if there are something selected,
// release selection and set caret at where the selection starts
view.Document.GetSelection(out selBegin, out selEnd);
if (selEnd != selBegin)
{
view.Document.SetSelection(selBegin, selBegin);
view.ScrollToCaret();
}
// otherwise, move caret left
else
{
CaretMoveLogic.MoveCaret(CaretMoveLogic.Calc_Left, ui);
}
// update desired column
view.SetDesiredColumn();
}
/// <summary>
/// Moves caret up.
/// </summary>
public static void MoveUp(IUserInterface ui)
{
// move caret
CaretMoveLogic.MoveCaret(CaretMoveLogic.Calc_Up, ui);
}
/// <summary>
/// Moves caret down.
/// </summary>
public static void MoveDown(IUserInterface ui)
{
// move caret
CaretMoveLogic.MoveCaret(CaretMoveLogic.Calc_Down, ui);
}
/// <summary>
/// Expands selection up.
/// </summary>
public static void SelectToUp(IUserInterface ui)
{
// change selection
CaretMoveLogic.SelectTo(CaretMoveLogic.Calc_Up, ui);
}