Subversion Repositories fastphp

unit EditorMain;

{$Include 'FastPHP.inc'}

(*

  This program requires

  - Microsoft Internet Controls (TWebBrowser)

    If you are using Delphi 10.1 Starter Edition, please import the ActiveX TLB

    "Microsoft Internet Controls"

  - SynEdit

    You can obtain SynEdit via Embarcadero GetIt

*)

// TODO: localize

// TODO: wieso geht copy paste im twebbrowser nicht???

// Wieso dauert webbrowser1 erste kompilierung so lange???

// TODO: wieso kommt syntax fehler zweimal? einmal stderr einmal stdout?

// TODO: Browser titlebar (link preview)

// TODO: todo liste

// Future ideas

// - code explorer / code insight

// - verschiedene php versionen?

// - webbrowser1 nur laden, wenn man den tab anwählt?

// - doppelklick auf tab soll diesen schließen

// - Onlinehelp (www) aufrufen

// - Let all colors be adjustable

// - code in bildschirmmitte (horizontal)?

interface

uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls, OleCtrls, ComCtrls, ExtCtrls, ToolWin, IniFiles,

  SynEditHighlighter, SynHighlighterPHP, SynEdit, FindReplace,

  ActnList, SynEditMiscClasses, SynEditSearch, SHDocVw{$IFDEF USE_SHDOCVW_TLB}_TLB{$ENDIF};

{.$DEFINE OnlineHelp}

type

  TForm1 = class(TForm)

    PageControl1: TPageControl;

    PlaintextTabSheet: TTabSheet;

    HtmlTabSheet: TTabSheet;

    Memo2: TMemo;

    WebBrowser1: TWebBrowser;

    Splitter1: TSplitter;

    PageControl2: TPageControl;

    CodeTabsheet: TTabSheet;

    HelpTabsheet: TTabSheet;

    WebBrowser2: TWebBrowser;

    OpenDialog1: TOpenDialog;

    Panel1: TPanel;

    OpenDialog3: TOpenDialog;

    SynEdit1: TSynEdit;

    SynPHPSyn1: TSynPHPSyn;

    Panel2: TPanel;

    SynEditFocusTimer: TTimer;

    Button1: TButton;

    Button2: TButton;

    Button3: TButton;

    Button4: TButton;

    Button5: TButton;

    Button6: TButton;

    ActionList: TActionList;

    ActionFind: TAction;

    ActionReplace: TAction;

    ActionFindNext: TAction;

    ActionGoto: TAction;

    ActionSave: TAction;

    ActionHelp: TAction;

    ActionRun: TAction;

    ActionESC: TAction;

    Button7: TButton;

    ActionOpen: TAction;

    Button8: TButton;

    Button9: TButton;

    ActionFindPrev: TAction;

    Timer1: TTimer;

    ActionSpaceToTab: TAction;

    Button11: TButton;

    SynEditSearch1: TSynEditSearch;

    procedure Run(Sender: TObject);

    procedure FormShow(Sender: TObject);

    procedure FormCreate(Sender: TObject);

    procedure FormDestroy(Sender: TObject);

    procedure FormClose(Sender: TObject; var Action: TCloseAction);

    procedure PageControl2Changing(Sender: TObject; var AllowChange: Boolean);

    procedure Memo2DblClick(Sender: TObject);

    procedure WebBrowser1BeforeNavigate2(ASender: TObject;

      const pDisp: IDispatch; {$IFDEF USE_SHDOCVW_TLB}const{$ELSE}var{$ENDIF} URL, Flags, TargetFrameName, PostData,

      Headers: OleVariant; var Cancel: WordBool);

    procedure SynEditFocusTimerTimer(Sender: TObject);

    procedure ActionFindExecute(Sender: TObject);

    procedure ActionReplaceExecute(Sender: TObject);

    procedure ActionFindNextExecute(Sender: TObject);

    procedure ActionGotoExecute(Sender: TObject);

    procedure ActionSaveExecute(Sender: TObject);

    procedure ActionHelpExecute(Sender: TObject);

    procedure ActionRunExecute(Sender: TObject);

    procedure ActionESCExecute(Sender: TObject);

    procedure SynEdit1MouseWheelDown(Sender: TObject; Shift: TShiftState;

      MousePos: TPoint; var Handled: Boolean);

    procedure SynEdit1MouseWheelUp(Sender: TObject; Shift: TShiftState;

      MousePos: TPoint; var Handled: Boolean);

    procedure ActionOpenExecute(Sender: TObject);

    procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);

    procedure Memo2KeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);

    procedure ActionFindPrevExecute(Sender: TObject);

    procedure SynEdit1MouseCursor(Sender: TObject;

      const aLineCharPos: TBufferCoord; var aCursor: TCursor);

    procedure Timer1Timer(Sender: TObject);

    procedure ActionSpaceToTabExecute(Sender: TObject);

  private

    CurSearchTerm: string;

    HlpPrevPageIndex: integer;

    SrcRep: TSynEditFindReplace;

    {$IFDEF OnlineHelp}

    gOnlineHelpWord: string;

    {$ENDIF}

    procedure Help;

    function MarkUpLineReference(cont: string): string;

    procedure SaveToFile(filename: string);

  protected

    ChmIndex: TMemIniFile;

    FScrapFile: string;

    procedure GotoLineNo(LineNo:integer);

    function GetScrapFile: string;

  end;

var

  Form1: TForm1;

implementation

{$R *.dfm}

uses

  Functions, StrUtils, WebBrowserUtils, FastPHPUtils, Math, ShellAPI, RichEdit,

  SynUnicode;

// TODO: FindPrev ?

procedure TForm1.ActionFindNextExecute(Sender: TObject);

begin

  SrcRep.FindNext;

end;

procedure TForm1.ActionFindPrevExecute(Sender: TObject);

begin

  SrcRep.FindPrev;

end;

procedure TForm1.ActionGotoExecute(Sender: TObject);

var

  val: string;

  lineno: integer;

begin

  // TODO: VK_LMENU does not work! only works with AltGr but not Alt

  // http://stackoverflow.com/questions/16828250/delphi-xe2-how-to-prevent-the-alt-key-stealing-focus ?

  InputQuery('Go to', 'Line number:', val);

  if not TryStrToInt(val, lineno) then

  begin

    if SynEdit1.CanFocus then SynEdit1.SetFocus;

    exit;

  end;

  GotoLineNo(lineno);

end;

procedure TForm1.ActionHelpExecute(Sender: TObject);

begin

  Help;

  if PageControl2.ActivePage = HelpTabsheet then

    WebBrowser2.SetFocus

  else if PageControl2.ActivePage = CodeTabsheet then

    SynEdit1.SetFocus;

end;

procedure TForm1.ActionOpenExecute(Sender: TObject);

begin

  If OpenDialog3.Execute then

  begin

    ShellExecute(0, 'open', PChar(ParamStr(0)), PChar(OpenDialog3.FileName), '', SW_NORMAL);

  end;

end;

procedure TForm1.ActionReplaceExecute(Sender: TObject);

begin

  SrcRep.ReplaceExecute;

end;

procedure TForm1.ActionRunExecute(Sender: TObject);

begin

  Run(Sender);

  SynEdit1.SetFocus;

end;

procedure TForm1.ActionSaveExecute(Sender: TObject);

begin

  SaveToFile(GetScrapFile);

  SynEdit1.Modified := false;

end;

procedure TForm1.ActionSpaceToTabExecute(Sender: TObject);

    function SpacesAtBeginning(line: string): integer;

    begin

      result := 0;

      if Trim(line) = '' then exit;

      while line[result+1] = ' ' do

      begin

        inc(result);

      end;

    end;

    function GuessIndent(lines: {$IFDEF UNICODE}TStrings{$ELSE}TUnicodeStrings{$ENDIF}): integer;

      function _Check(indent: integer): boolean;

      var

        i: integer;

      begin

        result := true;

        for i := 0 to lines.Count-1 do

          if SpacesAtBeginning(lines.Strings[i]) mod indent <> 0 then

          begin

            // ShowMessageFmt('Zeile "%s" nicht durch %d teilbar!', [lines.strings[i], indent]);

            result := false;

            exit;

          end;

      end;

    var

      i: integer;

    begin

      for i := 8 downto 2 do

      begin

        if _Check(i) then

        begin

          result := i;

          exit;

        end;

      end;

      result := -1;

    end;

    procedure SpaceToTab(lines: {$IFDEF UNICODE}TStrings{$ELSE}TUnicodeStrings{$ENDIF}; indent: integer);

    var

      i, spaces: integer;

    begin

      for i := 0 to lines.Count-1 do

      begin

        spaces := SpacesAtBeginning(lines.Strings[i]);

        lines.Strings[i] := StringOfChar(#9, spaces div indent) + StringOfChar(' ', spaces mod indent) + Copy(lines.Strings[i], spaces+1, Length(lines.Strings[i])-spaces);

      end;

    end;

    function SpacesAvailable(lines: {$IFDEF UNICODE}TStrings{$ELSE}TUnicodeStrings{$ENDIF}): boolean;

    var

      i, spaces: integer;

    begin

      for i := 0 to lines.Count-1 do

      begin

        spaces := SpacesAtBeginning(lines.Strings[i]);

        if spaces > 0 then

        begin

          result := true;

          exit;

        end;

      end;

      result := false;

      exit;

    end;

var

  val: string;

  ind: integer;

resourcestring

  SNoLinesAvailable = 'No lines with spaces at the beginning available';

begin

  // TODO: if something is selected, only process the selected part

  if not SpacesAvailable(SynEdit1.Lines) then

  begin

    ShowMessage(SNoLinesAvailable);

    exit;

  end;

  ind := GuessIndent(SynEdit1.Lines);

  if ind <> -1 then val := IntToStr(ind);

  InputQuery('Spaces to tabs', 'Indent:', val); // TODO: handle CANCEL correctly...

  if TryStrToInt(Trim(val), ind) then

  begin

    if ind = 0 then exit;

    SpaceToTab(SynEdit1.Lines, ind);

  end;

  if SynEdit1.CanFocus then SynEdit1.SetFocus;

end;

procedure TForm1.ActionESCExecute(Sender: TObject);

begin

  if (HlpPrevPageIndex <> -1) and (PageControl2.ActivePage = HelpTabSheet) and

     (HelpTabsheet.TabVisible) then

  begin

    PageControl2.ActivePageIndex := HlpPrevPageIndex;

    HelpTabsheet.TabVisible := false;

  end;

  // Dirty hack...

  SrcRep.CloseDialogs;

end;

procedure TForm1.ActionFindExecute(Sender: TObject);

begin

  SrcRep.FindExecute;

end;

var

  firstTimeBrowserLoad: boolean = true;

procedure TForm1.Run(Sender: TObject);

var

  bakTS: TTabSheet;

begin

  memo2.Lines.Text := '';

  if firstTimeBrowserLoad then

  begin

    bakTS := PageControl1.ActivePage;

    try

      PageControl1.ActivePage := HtmlTabSheet; // Required for the first time, otherwise, WebBrowser1.Clear will hang

      Webbrowser1.Clear;

    finally

      PageControl1.ActivePage := bakTS;

    end;

    firstTimeBrowserLoad := false;

  end

  else

    Webbrowser1.Clear;

  Screen.Cursor := crHourGlass;

  Application.ProcessMessages;

  try

    SaveToFile(GetScrapFile);

    memo2.Lines.Text := RunPHPScript(GetScrapFile);

    Webbrowser1.LoadHTML(MarkUpLineReference(memo2.Lines.Text), GetScrapFile);

    if IsTextHTML(memo2.lines.text) then

      PageControl1.ActivePage := HtmlTabSheet

    else

      PageControl1.ActivePage := PlaintextTabSheet;

  finally

    Screen.Cursor := crDefault;

  end;

end;

procedure TForm1.SaveToFile(filename: string);

{$IFNDEF UNICODE}

var

  sl: TStringList;

{$ENDIF}

begin

  {$IFDEF UNICODE}

  SynEdit1.Lines.SaveToFile(filename);

  {$ELSE}

  sl := TStringList.Create;

  try

    sl.Text := UTF8String(SynEdit1.Lines.Text);

    sl.SaveToFile(GetScrapFile);

  finally

    FreeAndNil(sl);

  end;

  {$ENDIF}

end;

procedure TForm1.SynEdit1MouseCursor(Sender: TObject; const aLineCharPos: TBufferCoord; var aCursor: TCursor);

{$IFDEF OnlineHelp}

var

  Line: Integer;

  Column: Integer;

  word: string;

begin

  Line  := aLineCharPos.Line-1;

  Column := aLineCharPos.Char-1;

  word := GetWordUnderPos(TSynEdit(Sender), Line, Column);

  if word <> gOnlineHelpWord then

  begin

    gOnlineHelpWord := word;

    Timer1.Enabled := false;

    Timer1.Enabled := true;

  end;

{$ELSE}

begin

{$ENDIF}

end;

procedure TForm1.SynEdit1MouseWheelDown(Sender: TObject; Shift: TShiftState;

  MousePos: TPoint; var Handled: Boolean);

begin

  if ssCtrl in Shift then

  begin

    SynEdit1.Font.Size := Max(SynEdit1.Font.Size - 1, 5);

    Handled := true;

  end

  else Handled := false;

end;

procedure TForm1.SynEdit1MouseWheelUp(Sender: TObject; Shift: TShiftState;

  MousePos: TPoint; var Handled: Boolean);

begin

  if ssCtrl in Shift then

  begin

    SynEdit1.Font.Size := SynEdit1.Font.Size + 1;

    Handled := true;

  end

  else Handled := false;

end;

procedure TForm1.SynEditFocusTimerTimer(Sender: TObject);

begin

  SynEditFocusTimer.Enabled := false;

  Button1.SetFocus; // Workaround for weird bug... This (and the timer) is necessary to get the focus to SynEdit1

  SynEdit1.SetFocus;

end;

procedure TForm1.Timer1Timer(Sender: TObject);

begin

  {$IFDEF OnlineHelp}

  Timer1.Enabled := false;

  // TODO: Insert a small online help hint

  //Caption := gOnlineHelpWord;

  {$ENDIF}

end;

procedure TForm1.WebBrowser1BeforeNavigate2(ASender: TObject;

  const pDisp: IDispatch; {$IFDEF USE_SHDOCVW_TLB}const{$ELSE}var{$ENDIF} URL, Flags, TargetFrameName, PostData,

  Headers: OleVariant; var Cancel: WordBool);

var

  s, myURL: string;

  lineno: integer;

  p: integer;

begin

  {$REGION 'Line number references (PHP errors and warnings)'}

  if Copy(URL, 1, length(FASTPHP_GOTO_URI_PREFIX)) = FASTPHP_GOTO_URI_PREFIX then

  begin

    try

      s := copy(URL, length(FASTPHP_GOTO_URI_PREFIX)+1, 99);

      if not TryStrToInt(s, lineno) then exit;

      GotoLineNo(lineno);

      SynEditFocusTimer.Enabled := true;

    finally

      Cancel := true;

    end;

    Exit;

  end;

  {$ENDREGION}

  {$REGION 'Intelligent browser (executes PHP scripts)'}

  if URL <> 'about:blank' then

  begin

    myUrl := URL;

    p := Pos('?', myUrl);

    if p >= 1 then myURL := copy(myURL, 1, p-1);

    // TODO: myURL urldecode

    // TODO: maybe we could even open that file in the editor!

    if FileExists(myURL) and (EndsText('.php', myURL) or EndsText('.php3', myURL) or EndsText('.php4', myURL) or EndsText('.php5', myURL) or EndsText('.phps', myURL)) then

    begin

      WebBrowser1.LoadHTML(GetDosOutput('"'+GetPHPExe+'" "'+myURL+'"', ExtractFileDir(Application.ExeName)), myUrl);

      Cancel := true;

    end;

  end;

  {$ENDREGION}

end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);

begin

  FastPHPConfig.WriteInteger('User', 'FontSize', SynEdit1.Font.Size);

end;

procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);

var

  r: integer;

begin

  if SynEdit1.Modified then

  begin

    if ParamStr(1) <> '' then

    begin

      r := MessageDlg('Do you want to save?', mtConfirmation, mbYesNoCancel, 0);

      if r = mrCancel then

      begin

        CanClose := false;

        Exit;

      end

      else if r = mrYes then

      begin

        SaveToFile(GetScrapFile);

        CanClose := true;

      end;

    end

    else

    begin

      SaveToFile(GetScrapFile);

      CanClose := true;

    end;

  end;

end;

procedure TForm1.FormCreate(Sender: TObject);

begin

  HlpPrevPageIndex := -1;

  CurSearchTerm := '';

  Caption := Caption + ' - ' + GetScrapFile;

  SrcRep := TSynEditFindReplace.Create(self);

  SrcRep.Editor := SynEdit1;

end;

procedure TForm1.FormDestroy(Sender: TObject);

begin

  if Assigned(ChmIndex) then

  begin

    FreeAndNil(ChmIndex);

  end;

  FreeAndNil(SrcRep);

end;

procedure TForm1.FormShow(Sender: TObject);

var

  ScrapFile: string;

begin

  ScrapFile := GetScrapFile;

  if ScrapFile = '' then

  begin

    Application.Terminate; // Close;

    exit;

  end;

  if FileExists(ScrapFile) then

    SynEdit1.Lines.LoadFromFile(ScrapFile)

  else

    SynEdit1.Lines.Clear;

  PageControl1.ActivePage := PlaintextTabSheet;

  PageControl2.ActivePage := CodeTabsheet;

  HelpTabsheet.TabVisible := false;

  SynEdit1.Font.Size := FastPHPConfig.ReadInteger('User', 'FontSize', SynEdit1.Font.Size);

  SynEdit1.SetFocus;

end;

function TForm1.GetScrapFile: string;

begin

  if FScrapFile <> '' then

  begin

    result := FScrapFile;

    exit;

  end;

  if ParamStr(1) <> '' then

    result := ParamStr(1)

  else

    result := FastPHPConfig.ReadString('Paths', 'ScrapFile', '');

  if not FileExists(result) then

  begin

    repeat

      if not OpenDialog3.Execute then

      begin

        Application.Terminate;

        result := '';

        exit;

      end;

      if not DirectoryExists(ExtractFilePath(OpenDialog3.FileName)) then

      begin

        ShowMessage('Path does not exist! Please try again.');

      end

      else

      begin

        result := OpenDialog3.FileName;

      end;

    until result <> '';

    SynEdit1.Lines.Clear;

    SaveToFile(result);

    FastPHPConfig.WriteString('Paths', 'ScrapFile', result);

    FScrapFile := result;

  end;

end;

procedure TForm1.Help;

var

  IndexFile, chmFile, w, OriginalWord, url: string;

  internalHtmlFile: string;

begin

  if not Assigned(ChmIndex) then

  begin

    IndexFile := FastPHPConfig.ReadString('Paths', 'HelpIndex', '');

    IndexFile := ChangeFileExt(IndexFile, '.ini'); // Just to be sure. Maybe someone wrote manually the ".chm" file in there

    if FileExists(IndexFile) then

    begin

      ChmIndex := TMemIniFile.Create(IndexFile);

    end;

  end;

  if Assigned(ChmIndex) then

  begin

    IndexFile := FastPHPConfig.ReadString('Paths', 'HelpIndex', '');

    // We don't check if IndexFile still exists. It is not important since we have ChmIndex pre-loaded in memory

    chmFile := ChangeFileExt(IndexFile, '.chm');

    if not FileExists(chmFile) then

    begin

      FreeAndNil(ChmIndex);

    end;

  end;

  if not Assigned(ChmIndex) then

  begin

    if not OpenDialog1.Execute then exit;

    chmFile := OpenDialog1.FileName;

    if not FileExists(chmFile) then exit;

    IndexFile := ChangeFileExt(chmFile, '.ini');

    if not FileExists(IndexFile) then

    begin

      Panel1.Align := alClient;

      Panel1.Visible := true;

      Panel1.BringToFront;

      Screen.Cursor := crHourGlass;

      Application.ProcessMessages;

      try

        if not ParseCHM(chmFile) then

        begin

          ShowMessage('The CHM file is not a valid PHP documentation. Cannot use help.');

          exit;

        end;

      finally

        Screen.Cursor := crDefault;

        Panel1.Visible := false;

      end;

      if not FileExists(IndexFile) then

      begin

        ShowMessage('Unknown error. Cannot use help.');

        exit;

      end;

    end;

    FastPHPConfig.WriteString('Paths', 'HelpIndex', IndexFile);

    FastPHPConfig.UpdateFile;

    ChmIndex := TMemIniFile.Create(IndexFile);

  end;

  w := GetWordUnderCaret(SynEdit1);

  if w = '' then exit;

  if CharInSet(w[1], ['0'..'9']) then exit;

  Originalword := w;

//  w := StringReplace(w, '_', '-', [rfReplaceAll]);

  w := LowerCase(w);

  CurSearchTerm := w;

  internalHtmlFile := ChmIndex.ReadString('_HelpWords_', CurSearchTerm, '');

  if internalHtmlFile = '' then

  begin

    HelpTabsheet.TabVisible := false;

    HlpPrevPageIndex := -1;

    ShowMessageFmt('No help for "%s" available', [Originalword]);

    Exit;

  end;

  url := 'mk:@MSITStore:'+ChmFile+'::'+internalHtmlFile;

  HlpPrevPageIndex := PageControl2.ActivePageIndex; // Return by pressing ESC

  HelpTabsheet.TabVisible := true;

  PageControl2.ActivePage := HelpTabsheet;

  WebBrowser2.Navigate(url);

  WebBrowser2.Wait;

end;

procedure TForm1.GotoLineNo(LineNo:integer);

var

  line: string;

  i: integer;

begin

  SynEdit1.GotoLineAndCenter(LineNo);

  // Skip indent

  line := SynEdit1.Lines[SynEdit1.CaretY];

  for i := 1 to Length(line) do

  begin

    if not CharInSet(line[i], [' ', #9]) then

    begin

      SynEdit1.CaretX := i-1;

      break;

    end;

  end;

  PageControl2.ActivePage := CodeTabsheet;

  if SynEdit1.CanFocus then SynEdit1.SetFocus;

end;

procedure TForm1.PageControl2Changing(Sender: TObject;

  var AllowChange: Boolean);

begin

  if PageControl2.ActivePage = HelpTabsheet then

    HlpPrevPageIndex := -1

  else

    HlpPrevPageIndex := PageControl2.ActivePageIndex;

  AllowChange := true;

end;

procedure TForm1.Memo2DblClick(Sender: TObject);

var

  line: string;

  procedure _process(toFind: string);

  var

    p, lineno: integer;

  begin

    if FileSystemCaseSensitive then

      p := Pos(toFind, line)

    else

      p := Pos(LowerCase(toFind), LowerCase(line));

    if p <> 0 then

    begin

      line := copy(line, p+length(toFind), 99);