unit1.pas

delphi老牌的浏览器控件

//***********************************************************
//                      WebUpdater  demo                    *
//                                                          *
//               For Delphi 5,6, 7 , 2005, 2006             *
//                     Freeware demo                        *
// By:  Eran Bodankin (bsalsa)   [e-mail]          *
//           Documentation and updated versions:            *
//               http://www.bsalsa.com                      *
//***********************************************************
{*******************************************************************************}
{LICENSE:
THIS SOFTWARE IS PROVIDED TO YOU "AS IS" WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE APPLIED
WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
YOU ASSUME THE ENTIRE RISK AS TO THE ACCURACY AND THE USE OF THE SOFTWARE
AND ALL OTHER RISK ARISING OUT OF THE USE OR PERFORMANCE OF THIS SOFTWARE
AND DOCUMENTATION. [YOUR NAME] DOES NOT WARRANT THAT THE SOFTWARE IS ERROR-FREE
OR WILL OPERATE WITHOUT INTERRUPTION. THE SOFTWARE IS NOT DESIGNED, INTENDED
OR LICENSED FOR USE IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE CONTROLS,
INCLUDING WITHOUT LIMITATION, THE DESIGN, CONSTRUCTION, MAINTENANCE OR
OPERATION OF NUCLEAR FACILITIES, AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS,
AIR TRAFFIC CONTROL, AND LIFE SUPPORT OR WEAPONS SYSTEMS. VSOFT SPECIFICALLY
DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR SUCH PURPOSE.

You may use, change or modify the component under 4 conditions:
1. In your website, add a link to "http://www.bsalsa.com"
2. In your application, add credits to "Embedded Web Browser"
3. Mail me  ([e-mail]) any code change in the unit
   for the benefit of the other users.
4. Please consider donation in our web site!
{*******************************************************************************}

unit Unit1;

interface

uses
  Windows, SysUtils, Classes, Controls, forms, Dialogs, ShellAPI, Grids,
  LibXmlParser, LibXmlComps, StdCtrls, ComCtrls, ExtCtrls, RichEditBrowser,
  OleCtrls, EmbeddedWB, Buttons, SHDocVw_EWB, EwbCore;

type
  Tform1 = class(Tform)
    PageControl1: TPageControl;
    TabSheet1: TTabSheet;
    TabSheet2: TTabSheet;
    XmlScanner1: TXmlScanner;
    TreeView: TTreeView;
    TabSheet3: TTabSheet;
    RichEditWB1: TRichEditWB;
    Panel1: TPanel;
    memInfo: TMemo;
    Panel2: TPanel;
    GroupBox1: TGroupBox;
    Panel3: TPanel;
    Panel4: TPanel;
    stgrInst: TStringGrid;
    Panel5: TPanel;
    Panel6: TPanel;
    GroupBox2: TGroupBox;
    cbOverWrite: TCheckBox;
    Panel7: TPanel;
    Button1: TButton;
    Button2: TButton;
    TabSheet4: TTabSheet;
    EmbeddedWB1: TEmbeddedWB;
    BitBtn2: TBitBtn;
    BitBtn3: TBitBtn;
    BitBtn1: TBitBtn;
    BitBtn4: TBitBtn;
    gbFile: TGroupBox;
    BitBtn5: TBitBtn;
    BitBtn6: TBitBtn;
    BitBtn7: TBitBtn;
    edtPath: TEdit;
    cbNumerator: TCheckBox;
    SpeedButton1: TSpeedButton;
    SpeedButton2: TSpeedButton;
    SpeedButton3: TSpeedButton;
    edtName: TEdit;
    edtVersion: TEdit;
    edtAuthor: TEdit;
    edtCompany: TEdit;
    Label1: TLabel;
    Label3: TLabel;
    Author: TLabel;
    Label4: TLabel;
    Label2: TLabel;
    Label5: TLabel;
    procedure SpeedButton2Click(Sender: TObject);
    procedure SpeedButton1Click(Sender: TObject);
    procedure SpeedButton3Click(Sender: TObject);
    procedure FormResize(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure XmlScanner1XmlProlog(Sender: TObject; XmlVersion,
      Encoding: string; Standalone: Boolean);
    procedure XmlScanner1StartTag(Sender: TObject; TagName: string;
      Attributes: TAttrList);
    procedure XmlScanner1PI(Sender: TObject; Target, Content: string;
      Attributes: TAttrList);
    procedure XmlScanner1EndTag(Sender: TObject; TagName: string);
    procedure XmlScanner1EmptyTag(Sender: TObject; TagName: string;
      Attributes: TAttrList);
    procedure XmlScanner1DtdRead(Sender: TObject; RootElementName: string);
    procedure XmlScanner1Content(Sender: TObject; Content: string);
    procedure XmlScanner1Comment(Sender: TObject; Comment: string);
    procedure XmlScanner1CData(Sender: TObject; Content: string);
    procedure btnLoadClick(Sender: TObject);
    procedure btnExploreClick(Sender: TObject);
    procedure stgrInstKeyPress(Sender: TObject; var Key: Char);
    procedure btnOpenIEClick(Sender: TObject);
    procedure btnOpenNotepadClick(Sender: TObject);
    procedure ledtVersionKeyPress(Sender: TObject; var Key: Char);
    procedure ledtCompanyKeyPress(Sender: TObject; var Key: Char);
    procedure ledtAuthorKeyPress(Sender: TObject; var Key: Char);
    procedure ledtNameKeyPress(Sender: TObject; var Key: Char);
    procedure btnLoadDemoClick(Sender: TObject);
    procedure btnClearClick(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure btnCreateXMLClick(Sender: TObject);
  private
     CurNode : TTreeNode;
     fXmlParser : TXmlParser;
     procedure HideControls();
     procedure UpdateControls(Name: string);
     procedure UpdateComponents();
     procedure ParseInit(XmlFile: string);
     procedure SetAttr(AttrName: string; var st: string);
    { Private declarations }
  public
    { Public declarations }
  end;

var
  form1: Tform1;

implementation

{$R *.dfm}

procedure Tform1.UpdateComponents();
begin
  TreeView.Items.BeginUpdate;
  TreeView.Items.Clear;
  CurNode := nil;
  XmlScanner1.Filename := edtPath.Text;
  XmlScanner1.Execute;
  TreeView.Items.EndUpdate;
  TreeView.FullExpand;
  RichEditWB1.LoadFromFile(edtPath.Text);
  RichEditWB1.DoHighlightXML;
 // EmbeddedWB1.Navigate(edtPath.Text);
end;

procedure Tform1.UpdateControls(Name: string);
var
 i: integer;
begin
  edtPath.Text := Name;
  gbFile.Visible:= true;
  Caption := 'Updates XML creator : '+ Name;
  for i :=1 to PageControl1.PageCount -1 do
  PageControl1.Pages[i].TabVisible := true;
end;

procedure Tform1.HideControls();
var
 i: integer;
begin
   gbFile.Visible := false;
   RichEditWB1.Clear;
   TreeView.Items.Clear;
   Caption := 'XML creator : by bsalsa';
   EmbeddedWB1.Navigate('About:Blank');
   for i :=1 to PageControl1.PageCount -1 do
   PageControl1.Pages[i].TabVisible := false;
end;

procedure Tform1.FormShow(Sender: TObject);
var
i : integer;
begin
   Caption := 'Updates XML creator : by bsalsa';
   stgrInst.Cols[0].Text := '#';
   for i := 1 to stgrInst.RowCount -1 do
   begin
     stgrInst.Cells[0, i] := IntToStr(i);
   end;
   stgrInst.Cols[1].Text := 'File Name';
   stgrInst.Cols[2].Text := 'Destination folder (Include SubFolders if needed)';
   stgrInst.Cols[3].Text := 'Terminate (yes/no)';
   memInfo.Lines.Text := 'The Change Log: ';
   PageControl1.ActivePageIndex :=0;
   HideControls();
end;

procedure Tform1.btnClearClick(Sender: TObject);
var
  i, j : integer;
begin
   for i:=1 to stgrInst.RowCount -1 do
     for j:= 1 to stgrInst.ColCount -1 do
      stgrInst.Cells[j, i] := '';
   memInfo.Lines.Clear;
   edtName.Text := '';
   edtVersion.Text := '';
   edtCompany.Text := '';
   edtAuthor.Text := '';
   TreeView.Items.Clear;
   HideControls();
end;

procedure Tform1.btnLoadDemoClick(Sender: TObject);
begin
  edtName.Text := 'project1';
  edtVersion.Text := '1.132';
  edtCompany.Text := 'bsalsa Productions';
  edtAuthor.Text := 'bsalsa';
  memInfo.Lines.Add('*Added new demo for the updater.');
  memInfo.Lines.Add('*Added an option to create XML files.');
  memInfo.Lines.Add('*Cleaned up the code.');
  memInfo.Lines.Add('*Faster update proceures.');
  memInfo.Lines.Add('*Option to add personal details.');
  memInfo.Lines.Add('*Option to match details (application and remote file).');
  memInfo.Lines.Add('and so on...');
  stgrInst.Cells[1, 1] := 'Test.txt';
  stgrInst.Cells[2, 1] := 'ApplicationFolder';
  stgrInst.Cells[3, 1] := 'no';
  stgrInst.Cells[1, 2] := 'Credits.txt';
  stgrInst.Cells[2, 2] := 'Updater_Test';
  stgrInst.Cells[3, 2] := 'no';
  stgrInst.Cells[1, 3] := 'ReadMe.txt';
  stgrInst.Cells[2, 3] := 'Updater_Test';
  stgrInst.Cells[3, 3] := 'yes';
  stgrInst.Cells[1, 4] := 'Project1.exe';
  stgrInst.Cells[2, 4] := 'ApplicationFolder';
  stgrInst.Cells[3, 4] := 'yes';
end;

procedure Tform1.ledtNameKeyPress(Sender: TObject; var Key: Char);
begin
  if (key = #13) or (key = #09) then EdtVersion.SetFocus;
end;

procedure Tform1.ledtVersionKeyPress(Sender: TObject; var Key: Char);
begin
   if (key = #13) or (key = #09) then EdtAuthor.SetFocus;
end;

procedure Tform1.ledtAuthorKeyPress(Sender: TObject; var Key: Char);
begin
   if (key = #13) or (key = #09) then EdtCompany.SetFocus;
end;

procedure Tform1.ledtCompanyKeyPress(Sender: TObject; var Key: Char);
begin
   if (key = #13) or (key = #09) then memInfo.SetFocus;
end;

procedure Tform1.btnOpenNotepadClick(Sender: TObject);
begin
   if edtPath.Text <> '' then
   ShellExecute(Handle,'open','notepad.exe',Pchar(edtPath.Text), nil, SW_SHOWNORMAL)
   else
     MessageDlg('What file exactly you want to open?' ,
                 mtError, [mbCancel], 0);
end;

procedure Tform1.btnOpenIEClick(Sender: TObject);
begin
   if edtPath.Text <> '' then
   ShellExecute(Handle,'open','Explorer',Pchar(edtPath.Text), nil, SW_SHOWNORMAL)
   else
     MessageDlg('What file exactly you want to open?' ,mtError, [mbCancel], 0);
end;

procedure Tform1.btnExploreClick(Sender: TObject);
begin
  if edtPath.Text <> '' then
   ShellExecute(Application.Handle, PChar('explore'),
                Pchar(ExtractFilePath(edtPath.Text)), nil,nil, SW_SHOWNORMAL)
   else
     MessageDlg('What file exactly you want to open?',
                 mtError, [mbCancel], 0); 
end;           ///ExtractFilePath

procedure Tform1.stgrInstKeyPress(Sender: TObject; var Key: Char);
begin
     if (key = #13) or (key = #09) then
     if stgrInst.Col < stgrInst.ColCount -1 then
       with stgrInst do
          begin
            if col < 3 then
             begin
               Col := Col + 1;
               SetFocus;
             end
         end
  else
     with stgrInst do
            begin
               Row := Row + 1;
               Col :=  1;
               SetFocus;
             end;
    if stgrInst.Row = stgrInst.RowCount -1 then
      MessageDlg('You have reached the limit of 50 lines (You can change it '+
                  'to what ever, if you need more).' ,mtError, [mbCancel], 0);
end;

procedure Tform1.btnLoadClick(Sender: TObject);
var
  Container : string;
  od : TOpenDialog;
  i : integer;
  Node      : TNvpNode;
function GetXmlHead(): boolean;
begin
  Result:=false;