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{
***************************************************************************
* *
* This source is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This code is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* A copy of the GNU General Public License is available on the World *
* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
* obtain it by writing to the Free Software Foundation, *
* Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1335, USA. *
* *
***************************************************************************
}
unit JumpHistoryView;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils,
// LCL
Forms, Controls, StdCtrls, Menus,
// LazUtils
LazUTF8, LazStringUtils,
// CodeTools
CodeToolManager, CodeCache,
// IDE
IDEOptionDefs, EnvironmentOpts, LazarusIDEStrConsts, Project, ProjectDefs;
type
{ TJumpHistoryViewWin }
TJumpHistoryViewWin = class(TForm)
listHistory : TListBox;
procedure FormCreate(Sender : TObject);
procedure listHistoryClick(Sender : TObject);
procedure listHistoryDblClick(Sender : TObject);
procedure listHistoryKeyPress(Sender: TObject; var Key: char);
procedure OnIdle(Sender : TObject; var {%H-}Done: Boolean);
private
{ private declarations }
fOnSelectionChanged : TNotifyEvent;
fProjectChangeStamp: integer;
function GetSelectedIndex : Integer;
function BeautifyLine(const Filename: string; X, Y: integer;
const Line: string): string;
procedure InitDisplay;
protected
procedure IndexChanged(Sender: TObject; {%H-}Index: Integer);
procedure ListChanged(Sender: TObject; {%H-}Index: Integer);
public
{ public declarations }
property SelectedIndex : Integer read GetSelectedIndex;
property OnSelectionChanged: TNotifyEvent read fOnSelectionChanged
write fOnSelectionChanged;
end;
var
JumpHistoryViewWin : TJumpHistoryViewWin = nil;
implementation
{$R *.lfm}
const
MaxTextLen = 80;
{ TJumpHistoryViewWin }
procedure TJumpHistoryViewWin.FormCreate(Sender : TObject);
begin
Caption := lisJHJumpHistory;
Name := NonModalIDEWindowNames[nmiwJumpHistory];
InitDisplay;
Application.AddOnIdleHandler(@OnIdle);
end;
procedure TJumpHistoryViewWin.listHistoryClick(Sender : TObject);
begin
if EnvironmentOptions.MsgViewDblClickJumps then exit;
if Assigned(fOnSelectionChanged) then fOnSelectionChanged(self);
end;
procedure TJumpHistoryViewWin.listHistoryDblClick(Sender : TObject);
begin
if not EnvironmentOptions.MsgViewDblClickJumps then exit;
if Assigned(fOnSelectionChanged) then fOnSelectionChanged(self);
end;
procedure TJumpHistoryViewWin.listHistoryKeyPress(Sender: TObject; var Key: char);
begin
if Key = #13 then begin
if Assigned(fOnSelectionChanged) then fOnSelectionChanged(self);
end;
end;
procedure TJumpHistoryViewWin.OnIdle(Sender: TObject; var Done: Boolean);
begin
if (Project1<>nil)
and (Project1.JumpHistory.ChangeStamp<>fProjectChangeStamp) then
InitDisplay;
end;
function TJumpHistoryViewWin.GetSelectedIndex : Integer;
begin
Result := listHistory.ItemIndex;
end;
function TJumpHistoryViewWin.BeautifyLine(const Filename : string; X, Y : integer;
const Line : string) : string;
begin
Result:=SpecialCharsToHex(Line);
if UTF8Length(Result)>MaxTextLen then
Result:=UTF8Copy(Result,1,MaxTextLen)+'...';
Result:=Filename
+' ('+IntToStr(Y)
+','+IntToStr(X)+')'
+' '+Result;
end;
procedure TJumpHistoryViewWin.InitDisplay;
var
i : integer;
jh_item : TProjectJumpHistoryPosition;
SrcLine: String;
CodeBuf: TCodeBuffer;
Filename: String;
begin
if (Project1<>nil)
and (fProjectChangeStamp=Project1.JumpHistory.ChangeStamp) then exit;
listHistory.Items.BeginUpdate;
listHistory.Clear;
if (Project1<>nil) then begin
fProjectChangeStamp:=Project1.JumpHistory.ChangeStamp;
for i := 0 to Project1.JumpHistory.Count -1 do begin
jh_item := Project1.JumpHistory.Items[i];
SrcLine:='';
CodeBuf:=CodeToolBoss.LoadFile(jh_item.Filename,true,false);
if CodeBuf<>nil then
SrcLine:=CodeBuf.GetLine(jh_item.CaretXY.Y-1,false);
Filename:=jh_item.Filename;
if Project1<>nil then
Filename:=Project1.GetShortFilename(Filename,true);
listHistory.Items.Append
(BeautifyLine(Filename,
jh_item.CaretXY.X,
jh_item.CaretXY.Y,
SrcLine
)
);
end;
//DebugLn(['TJumpHistoryViewWin.InitDisplay Project1.JumpHistory.HistoryIndex=',Project1.JumpHistory.HistoryIndex]);
listHistory.ItemIndex := Project1.JumpHistory.HistoryIndex;
end;
listHistory.Items.EndUpdate;
end;
procedure TJumpHistoryViewWin.IndexChanged(Sender : TObject; Index : Integer);
begin
listHistory.ItemIndex := Project1.JumpHistory.HistoryIndex;
end;
procedure TJumpHistoryViewWin.ListChanged(Sender : TObject; Index : Integer);
begin
InitDisplay;
end;
end.
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