using System.Drawing;

using System.Windows.Forms;

using ScintillaNet;

namespace PluginCore.Controls

{

public class MethodCallTip: RichToolTip

{

public delegate void UpdateCallTipHandler(ScintillaControl sender, int position);

// events

public event UpdateCallTipHandler OnUpdateCallTip;

public static string HLTextStyleBeg = "[B]";

public static string HLTextStyleEnd = "[/B]";

public static string HLBgStyleBeg = "[BGCOLOR=#000:OVERLAY]";

public static string HLBgStyleEnd = "[/BGCOLOR]";

// state

protected string currentText;

protected int currentHLStart;

protected int currentHLEnd;

protected bool isActive;

protected int memberPos;

protected int startPos;

protected int currentPos;

protected int deltaPos;

protected int currentLine;

public MethodCallTip(IMainForm mainForm): base(mainForm)

{

}

public bool CallTipActive

{

get { return isActive; }

}

public bool Focused

{

get { return toolTipRTB.Focused; }

}

public override void Hide()

{

if (isActive)

{

isActive = false;

UITools.Manager.UnlockControl(); // unlock keys

}

faded = false;

currentText = null;

currentHLStart = -1;

currentHLEnd = -1;

base.Hide();

}

public bool CheckPosition(int position)

{

return position == currentPos;

}

public void CallTipShow(ScintillaControl sci, int position, string text)

{

CallTipShow(sci, position, text, true);

}

public void CallTipShow(ScintillaControl sci, int position, string text, bool redraw)

{

if (toolTip.Visible && position == memberPos && text == currentText)

return;

toolTip.Visible = false;

currentText = text;

SetText(text, true);

memberPos = position;

startPos = memberPos + toolTipRTB.Text.IndexOf('(');

currentPos = sci.CurrentPos;

deltaPos = startPos - currentPos + 1;

currentLine = sci.CurrentLine;

PositionControl(sci);

// state

isActive = true;

faded = false;

UITools.Manager.LockControl(sci);

}

public void PositionControl(ScintillaControl sci)

{

// compute control location

Point p = new Point(sci.PointXFromPosition(memberPos), sci.PointYFromPosition(memberPos));

p = ((Form)PluginBase.MainForm).PointToClient(((Control)sci).PointToScreen(p));

toolTip.Left = p.X /*+ sci.Left*/;

bool hasListUp = !CompletionList.Active || CompletionList.listUp;

if (currentLine > sci.LineFromPosition(memberPos) || !hasListUp) toolTip.Top = p.Y - toolTip.Height /*+ sci.Top*/;

else toolTip.Top = p.Y + UITools.Manager.LineHeight(sci) /*+ sci.Top*/;

// Keep on control area

if (toolTip.Right > ((Form)PluginBase.MainForm).ClientRectangle.Right)

{

toolTip.Left = ((Form)PluginBase.MainForm).ClientRectangle.Right - toolTip.Width;

}

toolTip.Show();

toolTip.BringToFront();

}

public void CallTipSetHlt(int start, int end)

{

CallTipSetHlt(start, end, true);

}

public void CallTipSetHlt(int start, int end, bool forceRedraw)

{

if (currentHLStart == start && currentHLEnd == end)

return;

currentHLStart = start;

currentHLEnd = end;

if (start != end)

{

string savedRawText = rawText;

try

{

rawText = rawText.Substring(0, start)

+ HLBgStyleBeg + HLTextStyleBeg

+ rawText.Substring(start, end - start)

+ HLTextStyleEnd + HLBgStyleEnd

+ rawText.Substring(end);

Redraw();

}

catch { }

rawText = savedRawText;

}

else

{

Redraw();

}

}

#region Keys handling

public void OnChar(ScintillaControl sci, int value)

{

currentPos++;

UpdateTip(sci);

}

public new void UpdateTip(ScintillaControl sci)

{

if (OnUpdateCallTip != null) OnUpdateCallTip(sci, currentPos);

}

public bool HandleKeys(ScintillaControl sci, Keys key)

{

switch (key)

{

case Keys.Multiply:

case Keys.Subtract:

case Keys.Divide:

case Keys.Decimal:

case Keys.Add:

return false;

case Keys.Up:

if (!CompletionList.Active) sci.LineUp();

return false;

case Keys.Down:

if (!CompletionList.Active) sci.LineDown();

return false;

case Keys.Up | Keys.Shift:

sci.LineUpExtend();

return false;

case Keys.Down | Keys.Shift:

sci.LineDownExtend();

return false;

case Keys.Left | Keys.Shift:

sci.CharLeftExtend();

return false;

case Keys.Right | Keys.Shift:

sci.CharRightExtend();

return false;

case Keys.Right:

if (!CompletionList.Active)

{

sci.CharRight();

currentPos = sci.CurrentPos;

if (sci.CurrentLine != currentLine) Hide();

else if (OnUpdateCallTip != null) OnUpdateCallTip(sci, currentPos);

}

return true;

case Keys.Left:

if (!CompletionList.Active)

{

sci.CharLeft();

currentPos = sci.CurrentPos;

if (currentPos < startPos) Hide();

else

{

if (sci.CurrentLine != currentLine) Hide();

else if (OnUpdateCallTip != null) OnUpdateCallTip(sci, currentPos);

}

}

return true;

case Keys.Back:

sci.DeleteBack();

currentPos = sci.CurrentPos;

if (currentPos + deltaPos < startPos) Hide();

else if (OnUpdateCallTip != null) OnUpdateCallTip(sci, currentPos);

return true;

case Keys.Tab:

case Keys.Space:

return false;

default:

if (!CompletionList.Active) Hide();

return false;

}

}

#endregion

#region Controls fading on Control key

private static bool faded;

internal void FadeOut()

{

if (faded) return;

faded = true;

//base.Hide();

toolTip.Visible = false;

}

internal void FadeIn()

{

if (!faded) return;

faded = false;

//base.Show();

toolTip.Visible = true;

}

#endregion

}

}