unit FindWindowUnit;

{$MODE Delphi}

interface

uses
  LCLIntf, Messages, LMessages, SysUtils, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls,CEFuncProc,ComCtrls, ExtCtrls, LResources, memscan,
  commonTypeDefs, math, {$ifdef windows}win32proc,{$endif} symbolhandler, betterControls;

const wm_fw_scandone=wm_user+1;
type

  { TFindWindow }

  TFindWindow = class(TForm)
    Panel1: TPanel;
    labelType: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    labelArray: TLabel;
    editStart: TEdit;
    EditStop: TEdit;
    rbText: TRadioButton;
    rbArByte: TRadioButton;
    cbUnicode: TCheckBox;
    Panel2: TPanel;
    btnOK: TButton;
    btnCancel: TButton;
    Scanvalue: TEdit;
    procedure btnOKClick(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure FormShow(Sender: TObject);
  private
    { Private declarations }
    memscan: TMemScan;
    procedure scandone(Sender: TObject);

  public
    { Public declarations }
    firstscan: boolean;
  end;

var
  FindWindow: TFindWindow;

implementation

uses MemoryBrowserFormUnit, ProcessHandlerUnit, Parsers;

resourcestring
  rsNothingFound = 'Nothing found';
  rsTheSpecifiedRangeIsInvalid = 'The specified range is invalid';


procedure TFindWindow.scandone(sender: TObject);
var x: ptruint;
begin
  if TMemScan(sender).GetOnlyOneResult(x) then
  begin
    MemoryBrowser.memoryaddress:=x;
    modalresult:=mrok;
  end else
  begin
    MessageDlg(rsNothingFound, mtError, [mbok], 0);
  end;

  if memscan=sender then
    freeandnil(memscan);

  btnOK.enabled:=true;
end;

procedure TFindWindow.btnOKClick(Sender: TObject);
var startaddress,stopaddress: ptruint;
    //cb: TCheckbox;
    valtype: TVariableType;
    i: integer;

begin
  if memscan<>nil then
    freeandnil(memscan);
  
  try
    startaddress:=StrToQWordEx('$'+editstart.text);
  except
    startaddress:=symhandler.getAddressFromName(editstart.text);
  end;

  try
    stopaddress:=StrToQWordEx('$'+editstop.text);
  except
    stopaddress:=symhandler.getAddressFromName(editstop.text);
  end;

  if startaddress>stopaddress then
  begin  //xor swap
    startaddress:=startaddress xor stopaddress;
    stopaddress:=stopaddress xor startaddress;
    startaddress:=startaddress xor stopaddress;
  end;


  if rbText.checked then valtype:=vtString else valtype:=vtByteArray;


  memscan:=TMemscan.create(nil);
  memscan.onlyone:=true;
  memscan.scanCopyOnWrite:=scanDontCare;
  memscan.scanExecutable:=scanDontCare;
  memscan.scanWritable:=scanDontCare;


  memscan.firstscan(soExactValue, valtype, rtRounded, scanvalue.text, '', startaddress, stopaddress, true, false, cbunicode.checked, false, fsmNotAligned);
  memscan.OnScanDone:=ScanDone;

  btnOK.enabled:=false;
end;

procedure TFindWindow.FormDestroy(Sender: TObject);
begin
  if memscan<>nil then
    freeandnil(memscan);
end;

procedure TFindWindow.FormShow(Sender: TObject);
const EM_GETMARGINS=$d4;
var m: dword;

begin
  if firstscan then
  begin

    {$ifdef windows}
    if WindowsVersion>=wvVista then
      m:=sendmessage(editstart.Handle, EM_GETMARGINS, 0,0)
    else
    {$endif}
      m:=0;


    if processhandler.is64bit then
    begin
       //init just once if needed
       if (editstop.Text = '') or (editstart.Text = '') then  // if not initialized
       begin
          editstop.text:='7FFFFFFFFFFFFFFF';
          editstart.Text:='0000000000000000';
       end;
      editstart.clientwidth:=canvas.TextWidth('DDDDDDDDDDDDDDDD')+(m shr 16)+(m and $ffff);
    end
    else
    begin
      //init just once if needed
      if (editstop.Text = '') or (editstart.Text = '') then  // if not initialized
      begin
         editstop.text:='7FFFFFFF';
         editstart.Text:='00000000';
      end;
      editstart.clientwidth:=canvas.TextWidth('DDDDDDDD')+(m shr 16)+(m and $ffff);
    end;

    labelType.visible:=true;
    labelarray.visible:=true;
    rbtext.visible:=true;
    rbArByte.visible:=true;
    scanvalue.Visible:=true;
    btnOK.visible:=true;
    btnCancel.visible:=true;
    EditStop.visible:=true;
    editStart.visible:=true;
    label2.Visible:=true;
    label3.Visible:=true;
    Scanvalue.SetFocus;
  end
  else
  begin
    labelType.visible:=false;
    labelarray.visible:=false;
    rbtext.visible:=false;
    rbArByte.visible:=false;
    scanvalue.Visible:=false;
    btnOK.visible:=false;
    btnCancel.visible:=false;
    EditStop.visible:=false;
    editStart.visible:=false;
    label2.Visible:=false;
    label3.Visible:=false;
  end;

  btnok.AutoSize:=true;
  btnok.AutoSize:=false;

  btnCancel.autosize:=true;
  btnCancel.autosize:=false;

  btnok.width:=max(btnok.width, btncancel.width);
  btncancel.width:=max(btnok.width, btncancel.width);
end;

initialization
  {$i FindWindowUnit.lrs}

end.