1 | unit fOMHTML;
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2 |
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3 | {$OPTIMIZATION OFF} // REMOVE AFTER UNIT IS DEBUGGED
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4 |
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5 | interface
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6 |
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7 | uses
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8 | Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
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9 | fOMAction, StdCtrls, OleCtrls, SHDocVw, MSHTML, activex, rOrders, uConst,
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10 | ExtCtrls, VA508AccessibilityManager;
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11 |
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12 | type
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13 | TfrmOMHTML = class(TfrmOMAction)
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14 | btnOK: TButton;
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15 | btnCancel: TButton;
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16 | btnBack: TButton;
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17 | pnlWeb: TPanel;
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18 | webView: TWebBrowser;
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19 | btnShow: TButton;
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20 | procedure btnOKClick(Sender: TObject);
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21 | procedure btnCancelClick(Sender: TObject);
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22 | procedure FormCreate(Sender: TObject);
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23 | procedure webViewDocumentComplete(Sender: TObject;
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24 | const pDisp: IDispatch; var URL: OleVariant);
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25 | procedure webViewBeforeNavigate2(Sender: TObject;
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26 | const pDisp: IDispatch; var URL, Flags, TargetFrameName, PostData,
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27 | Headers: OleVariant; var Cancel: WordBool);
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28 | procedure FormDestroy(Sender: TObject);
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29 | procedure FormClose(Sender: TObject; var Action: TCloseAction);
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30 | procedure btnBackClick(Sender: TObject);
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31 | procedure btnShowClick(Sender: TObject);
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32 | private
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33 | FOwnedBy: TComponent;
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34 | FRefNum: Integer;
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35 | FDialog: Integer;
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36 | FSetList: TStringList;
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37 | FPageCache: TList;
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38 | FCurrentIndex: Integer;
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39 | FCurrentURL: string;
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40 | FCurrentDoc: IHtmlDocument2;
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41 | FDelayEvent: TOrderDelayEvent;
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42 | FHistoryStack: TStringList;
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43 | FHistoryIndex: Integer;
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44 | function GetPageIndex(const URL: string): Integer;
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45 | function MetaElementExists(const AName, AContent: string): Boolean;
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46 | procedure AddPageToCache;
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47 | procedure SaveState;
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48 | procedure RestoreState;
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49 | procedure SetDialog(Value: Integer);
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50 | public
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51 | procedure SetEventDelay(AnEvent: TOrderDelayEvent);
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52 | property Dialog: Integer read FDialog write SetDialog;
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53 | property OwnedBy: TComponent read FOwnedBy write FOwnedBy;
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54 | property RefNum: Integer read FRefNum write FRefNum;
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55 | property SetList: TStringList read FSetList write FSetList;
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56 | end;
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57 |
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58 | var
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59 | frmOMHTML: TfrmOMHTML;
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60 |
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61 | implementation
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62 |
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63 | {$R *.DFM}
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64 |
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65 | uses ORFn, rCore, uCore, uOrders, ORNet, TRPCB, rMisc;
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66 |
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67 | const
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68 | TAB = #9;
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69 |
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70 | type
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71 | TPageState = class
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72 | private
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73 | FURL: string;
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74 | FTagStates: TStringList;
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75 | FSubmitData: TStringList;
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76 | public
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77 | constructor Create;
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78 | destructor Destroy; override;
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79 | end;
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80 |
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81 | { TPageState }
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82 |
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83 | constructor TPageState.Create;
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84 | begin
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85 | FTagStates := TStringList.Create;
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86 | FSubmitData := TStringList.Create;
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87 | end;
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88 |
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89 | destructor TPageState.Destroy;
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90 | begin
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91 | FTagStates.Free;
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92 | FSubmitData.Free;
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93 | inherited;
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94 | end;
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95 |
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96 | { temporary RPC's }
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97 |
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98 | function GetIENforHtml(const AnID: string): Integer;
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99 | {AnID, O.name or O.ien for 101.41, H.name or H.ien for 101.14}
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100 | begin
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101 | Result := StrToIntDef(sCallV('ORWDHTM GETIEN', [AnID]), 0);
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102 | end;
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103 |
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104 | function GetHTMLText(AnIEN: Integer): string;
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105 | {return HTML text from 101.14 given IEN}
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106 | begin
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107 | CallV('ORWDHTM HTML', [AnIEN, Patient.DFN]);
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108 | Result := RPCBrokerV.Results.Text;
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109 | end;
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110 |
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111 | function GetURLforDialog(AnIEN: Integer): string;
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112 | begin
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113 | Result := sCallV('ORWDHTM URL', [AnIEN]);
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114 | if Result = '' then Result := 'about:URL not found';
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115 | end;
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116 |
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117 | procedure NameValueToViewList(Src, Dest: TStringList);
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118 | { xform name<TAB>value into DlgIEN^DlgType^DisplayName list }
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119 | var
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120 | i: Integer;
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121 | Subs: string;
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122 | begin
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123 | RPCBrokerV.ClearParameters := True;
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124 | RPCBrokerV.RemoteProcedure := 'ORWDHTM NV2DNM';
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125 | RPCBrokerV.Param[0].PType := list;
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126 | for i := 0 to Pred(Src.Count) do
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127 | begin
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128 | Subs := IntToStr(Succ(i));
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129 | RPCBrokerV.Param[0].Mult[Subs] := Copy(Src[i], 1, 245);
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130 | end; {for i}
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131 | CallBroker;
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132 | FastAssign(RPCBrokerV.Results, Dest);
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133 | end;
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134 |
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135 | procedure NameValueToOrderSet(Src, Dest: TStringList);
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136 | { xform name<TAB>value into DlgIEN^DlgType^DisplayName list }
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137 | var
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138 | i, j: Integer;
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139 | Subs: string;
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140 | WPText: TStringList;
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141 | begin
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142 | RPCBrokerV.ClearParameters := True;
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143 | RPCBrokerV.RemoteProcedure := 'ORWDHTM NV2SET';
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144 | RPCBrokerV.Param[0].PType := list;
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145 | WPText := TStringList.Create;
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146 | for i := 0 to Pred(Src.Count) do
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147 | begin
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148 | WPText.Clear;
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149 | WPText.Text := Copy(Src[i], Pos(TAB, Src[i]) + 1, Length(Src[i]));
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150 | Subs := IntToStr(Succ(i));
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151 | if WPText.Count = 1 then RPCBrokerV.Param[0].Mult[Subs] := Src[i] else
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152 | begin
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153 | RPCBrokerV.Param[0].Mult['"WP",' + Subs] :=
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154 | Piece(Src[i], TAB, 1) + TAB + 'NMVAL("WP",' + Subs + ')';
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155 | for j := 0 to Pred(WPText.Count) do
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156 | RPCBrokerV.Param[0].Mult['"WP",' + Subs + ',' + IntToStr(Succ(j)) + ',0'] := WPText[j];
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157 | end; {if WPText}
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158 | end; {for i}
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159 | CallBroker;
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160 | WPText.Free;
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161 | FastAssign(RPCBrokerV.Results, Dest);
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162 | end;
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163 |
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164 | { general procedures }
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165 |
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166 | procedure TfrmOMHTML.SetEventDelay(AnEvent: TOrderDelayEvent);
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167 | begin
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168 | FDelayEvent := AnEvent;
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169 | end;
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170 |
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171 | function TfrmOMHTML.GetPageIndex(const URL: string): Integer;
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172 | var
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173 | i: Integer;
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174 | begin
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175 | Result := -1;
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176 | for i := 0 to Pred(FPageCache.Count) do
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177 | if TPageState(FPageCache[i]).FURL = URL then
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178 | begin
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179 | Result := i;
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180 | break;
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181 | end;
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182 | end;
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183 |
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184 | function TfrmOMHTML.MetaElementExists(const AName, AContent: string): Boolean;
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185 | var
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186 | i: Integer;
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187 | AnElement: IHtmlElement;
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188 | AllElements: IHtmlElementCollection;
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189 | begin
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190 | Result := False;
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191 | AllElements := FCurrentDoc.All;
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192 | for i := 0 to Pred(AllElements.Length) do
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193 | begin
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194 | AnElement := AllElements.Item(i, 0) as IHtmlElement;
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195 | if AnElement.tagName = 'META' then
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196 | with AnElement as IHtmlMetaElement do
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197 | if (CompareText(name, AName) = 0) and (CompareText(content, AContent) = 0)
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198 | then Result := True;
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199 | if Result then Break;
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200 | end;
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201 | end;
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202 |
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203 | procedure TfrmOMHTML.AddPageToCache;
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204 | var
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205 | APageState: TPageState;
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206 | begin
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207 | APageState := TPageState.Create;
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208 | APageState.FURL := FCurrentURL;
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209 | FCurrentIndex := FPageCache.Add(APageState);
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210 | end;
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211 |
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212 | procedure TfrmOMHTML.SaveState;
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213 | var
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214 | i: Integer;
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215 | SelectName, State, NmVal, x: string;
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216 | APageState: TPageState;
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217 | AnElement: IHtmlElement;
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218 | AnInput: IHtmlInputElement;
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219 | ASelect: IHtmlSelectElement;
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220 | AnOption: IHtmlOptionElement;
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221 | ATextArea: IHtmlTextAreaElement;
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222 | AllElements: IHtmlElementCollection;
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223 | begin
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224 | if FCurrentIndex < 0 then Exit;
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225 | Assert(Assigned(FCurrentDoc));
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226 | APageState := FPageCache[FCurrentIndex];
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227 | APageState.FTagStates.Clear;
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228 | APageState.FSubmitData.Clear;
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229 | if not MetaElementExists('VistAuse', 'ORWDSET') then Exit;
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230 |
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231 | AllElements := FCurrentDoc.All;
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232 | for i := 0 to Pred(AllElements.Length) do
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233 | begin
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234 | AnElement := AllElements.Item(i, 0) as IHtmlElement;
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235 | NmVal := '';
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236 | State := '';
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237 | if AnElement.tagName = 'INPUT' then
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238 | begin
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239 | AnInput := AnElement as IHtmlInputElement;
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240 | if AnInput.type_ = 'checkbox' then
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241 | begin
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242 | if AnInput.checked then
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243 | begin
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244 | State := AnInput.name + TAB + '1';
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245 | NmVal := AnInput.name + TAB + '1';
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246 | end
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247 | else State := AnInput.name + TAB + '0';
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248 | end; {checkbox}
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249 | if AnInput.type_ = 'radio' then
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250 | begin
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251 | if AnInput.checked then
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252 | begin
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253 | State := AnInput.name + AnInput.Value + TAB + '1';
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254 | NmVal := AnInput.value + TAB + '1';
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255 | end
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256 | else State := AnInput.name + AnInput.Value + TAB + '0';
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257 | end; {radio}
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258 | if (AnInput.type_ = 'hidden') or (AnInput.type_ = 'password') or (AnInput.type_ = 'text') then
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259 | begin
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260 | State := AnInput.name + TAB + AnInput.value;
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261 | NmVal := State;
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262 | end; {hidden, password, text}
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263 | end; {INPUT}
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264 | if AnElement.tagname = 'SELECT' then
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265 | begin
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266 | ASelect := AnElement as IHtmlSelectElement;
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267 | SelectName := ASelect.name;
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268 | end; {SELECT}
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269 | if AnElement.tagName = 'OPTION' then
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270 | begin
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271 | AnOption := AnElement as IHtmlOptionElement;
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272 | x := AnOption.value;
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273 | if x = '' then x := AnOption.text;
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274 | if AnOption.Selected then
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275 | begin
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276 | State := SelectName + x + TAB + '1';
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277 | NmVal := SelectName + TAB + x;
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278 | end
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279 | else State := SelectName + x + TAB + '0';
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280 | end; {OPTION}
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281 | if AnElement.tagName = 'TEXTAREA' then
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282 | begin
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283 | ATextArea := AnElement as IHtmlTextAreaElement;
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284 | State := ATextArea.name + TAB + ATextArea.value;
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285 | NmVal := State;
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286 | end; {TEXTAREA}
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287 | if Length(State) > 0 then APageState.FTagStates.Add(State);
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288 | if Length(NmVal) > 0 then APageState.FSubmitData.Add(NmVal);
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289 | end; {for i}
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290 | end;
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291 |
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292 | procedure TfrmOMHTML.RestoreState;
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293 | var
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294 | i: Integer;
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295 | SelectName, x: string;
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296 | APageState: TPageState;
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297 | AnElement: IHtmlElement;
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298 | AnInput: IHtmlInputElement;
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299 | ASelect: IHtmlSelectElement;
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300 | AnOption: IHtmlOptionElement;
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301 | ATextArea: IHtmlTextAreaElement;
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302 | AllElements: IHtmlElementCollection;
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303 |
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304 | function GetStateFromName(const AName: string): string;
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305 | var
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306 | i: Integer;
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307 | begin
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308 | Result := '';
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309 | for i := 0 to Pred(APageState.FTagStates.Count) do
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310 | begin
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311 | if Piece(APageState.FTagStates[i], TAB, 1) = AName then
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312 | begin
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313 | Result := Piece(APageState.FTagStates[i], TAB, 2);
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314 | Break;
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315 | end; {if Piece}
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316 | end; {for i}
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317 | end; {GetStateFromName}
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318 |
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319 | begin
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320 | APageState := TPageState(FPageCache.Items[FCurrentIndex]);
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321 | if APageState.FTagStates.Count = 0 then Exit;
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322 | AllElements := FCurrentDoc.All;
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323 | for i := 0 to Pred(AllElements.Length) do
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324 | begin
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325 | AnElement := AllElements.Item(i, 0) as IHtmlElement;
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326 | if AnElement.tagName = 'INPUT' then
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327 | begin
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328 | AnInput := AnElement as IHtmlInputElement;
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329 | if AnInput.type_ = 'checkbox'
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330 | then AnInput.Set_checked(GetStateFromName(AnInput.name) = '1');
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331 | if AnInput.Type_ = 'radio'
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332 | then AnInput.Set_checked(GetStateFromName(AnInput.name + AnInput.Value) = '1');
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333 | if (AnInput.type_ = 'hidden') or (AnInput.type_ = 'password') or (AnInput.type_ = 'text')
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334 | then AnInput.Set_value(GetStateFromName(AnInput.name));
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335 | end; {INPUT}
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336 | if AnElement.tagname = 'SELECT' then
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337 | begin
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338 | ASelect := AnElement as IHtmlSelectElement;
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339 | SelectName := ASelect.name;
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340 | end; {SELECT}
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341 | if AnElement.tagName = 'OPTION' then
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342 | begin
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343 | AnOption := AnElement as IHtmlOptionElement;
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344 | x := AnOption.value;
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345 | if x = '' then x := AnOption.text;
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346 | AnOption.Set_selected(GetStateFromName(SelectName + x) = '1');
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347 | end; {OPTION}
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348 | if AnElement.tagName = 'TEXTAREA' then
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349 | begin
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350 | ATextArea := AnElement as IHtmlTextAreaElement;
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351 | ATextArea.Set_value(GetStateFromName(ATextArea.name));
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352 | end; {TEXTAREA}
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353 | end; {for i}
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354 | end;
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355 |
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356 | procedure TfrmOMHTML.SetDialog(Value: Integer);
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357 | begin
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358 | FDialog := Value;
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359 | webView.Navigate(GetURLForDialog(FDialog));
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360 | end;
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361 |
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362 | { Form events (get the initial page loaded) }
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363 |
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364 | procedure TfrmOMHTML.FormCreate(Sender: TObject);
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365 | begin
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366 | AutoSizeDisabled := True;
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367 | inherited;
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368 | FPageCache := TList.Create;
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369 | FSetList := TStringList.Create;
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370 | FHistoryStack := TStringList.Create;
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371 | FHistoryIndex := -1;
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372 | FCurrentIndex := -1;
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373 | end;
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374 |
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375 | procedure TfrmOMHTML.FormClose(Sender: TObject; var Action: TCloseAction);
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376 | begin
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377 | inherited;
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378 | SaveUserBounds(Self);
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379 | if (FOwnedBy <> nil) and (FOwnedBy is TWinControl)
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380 | then SendMessage(TWinControl(FOwnedBy).Handle, UM_DESTROY, FRefNum, 0);
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381 | end;
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382 |
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383 | procedure TfrmOMHTML.FormDestroy(Sender: TObject);
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384 | var
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385 | i: Integer;
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386 | begin
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387 | for i := Pred(FPageCache.Count) downto 0 do TPageState(FPageCache[i]).Free;
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388 | DestroyingOrderHTML;
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389 | FSetList.Free;
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390 | FHistoryStack.Free;
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391 | inherited;
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392 | end;
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393 |
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394 | { webBrowser events }
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395 |
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396 | procedure TfrmOMHTML.webViewDocumentComplete(Sender: TObject; const pDisp: IDispatch;
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397 | var URL: OleVariant);
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398 | { This event happens after a navigation. It is at this point that there is an instantiated
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399 | instance of IHtmlDocument available. }
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400 | begin
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401 | inherited;
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402 | if not Assigned(webView.Document) then Exit;
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403 | FCurrentDoc := webView.Document as IHtmlDocument2;
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404 | FCurrentURL := URL;
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405 | FHistoryStack.Add(FCurrentURL);
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406 | btnBack.Enabled := FHistoryStack.Count > 1;
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407 | FCurrentIndex := GetPageIndex(FCurrentURL);
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408 | if FCurrentIndex >= 0 then RestoreState else AddPageToCache;
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409 | end;
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410 |
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411 | function CopyToCtrlChar(const Src: string; StartAt: Integer): string;
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412 | var
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413 | i: Integer;
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414 | begin
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415 | Result := '';
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416 | if StartAt < 1 then StartAt := 1;
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417 | for i := StartAt to Length(Src) do
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418 | if Ord(Src[i]) > 31 then Result := Result + Src[i] else break;
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419 | end;
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420 |
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421 | procedure TfrmOMHTML.webViewBeforeNavigate2(Sender: TObject; const pDisp: IDispatch;
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422 | var URL, Flags, TargetFrameName, PostData, Headers: OleVariant; var Cancel: WordBool);
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423 | begin
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424 | inherited;
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425 | SaveState;
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426 | // activate order dialog here, i.e., 'about:CPRSOrder=FHW1'
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427 | end;
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428 |
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429 | { button events }
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430 |
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431 | procedure TfrmOMHTML.btnOKClick(Sender: TObject);
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432 | var
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433 | i, j: Integer;
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434 | APageState: TPageState;
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435 | begin
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436 | inherited;
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437 | SaveState;
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438 | // create an order set based on all the saved states of pages navigated to
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439 | for i := 0 to Pred(FPageCache.Count) do
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440 | begin
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441 | APageState := FPageCache[i];
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442 | for j := 0 to Pred(APageState.FSubmitData.Count) do
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443 | begin
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444 | FSetList.Add(APageState.FSubmitData[j]);
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445 | end;
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446 | end;
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447 | NameValueToOrderSet(FSetList, FSetList);
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448 | // put in reference number, key variables, & caption later as necessary
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449 | //ActivateOrderList(NameValuePairs, FDelayEvent, Self, 0, '', '');
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450 | Close;
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451 | end;
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452 |
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453 | procedure TfrmOMHTML.btnCancelClick(Sender: TObject);
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454 | begin
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455 | inherited;
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456 | Close;
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457 | end;
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458 |
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459 | procedure TfrmOMHTML.btnBackClick(Sender: TObject);
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460 | var
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461 | BackURL: string;
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462 | begin
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463 | inherited;
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464 | if FHistoryStack.Count > 1 then
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465 | begin
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466 | FHistoryStack.Delete(Pred(FHistoryStack.Count));
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467 | BackURL := FHistoryStack[Pred(FHistoryStack.Count)];
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468 | FHistoryStack.Delete(Pred(FHistoryStack.Count));
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469 | if FHistoryStack.Count < 2 then btnBack.Enabled := False;
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470 | webView.Navigate(BackURL);
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471 | end;
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472 | end;
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473 |
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474 | procedure TfrmOMHTML.btnShowClick(Sender: TObject);
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475 | var
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476 | i, j: Integer;
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477 | APageState: TPageState;
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478 | tmpList: TStringList;
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479 | begin
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480 | inherited;
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481 | SaveState;
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482 | tmpList := TStringList.Create;
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483 | // create an order set based on all the saved states of pages navigated to
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484 | for i := 0 to Pred(FPageCache.Count) do
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485 | begin
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486 | APageState := FPageCache[i];
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487 | for j := 0 to Pred(APageState.FSubmitData.Count) do
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488 | begin
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489 | tmpList.Add(APageState.FSubmitData[j]);
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490 | end;
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491 | end;
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492 | NameValueToViewList(tmpList, tmpList);
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493 | InfoBox(tmpList.Text, 'Current Selections', MB_OK);
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494 | tmpList.Free;
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495 | end;
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496 |
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497 | end.
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