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ComparatorFrame.pas
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ComparatorFrame.pas
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unit ComparatorFrame;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls, Spin,
InflatablesList_HTML_ElementFinder,
InflatablesList_Manager;
type
TfrmComparatorFrame = class(TFrame)
pnlMain: TPanel;
leString: TLabeledEdit;
lblVarIndex: TLabel;
seVarIndex: TSpinEdit;
cbCaseSensitive: TCheckBox;
cbAllowPartial: TCheckBox;
bvlStrSeparator: TBevel;
lblOperator: TLabel;
cmbOperator: TComboBox;
cbNegate: TCheckBox;
cbNestedText: TCheckBox;
procedure leStringChange(Sender: TObject);
procedure seVarIndexChange(Sender: TObject);
procedure cbCaseSensitiveClick(Sender: TObject);
procedure cbAllowPartialClick(Sender: TObject);
procedure cmbOperatorChange(Sender: TObject);
procedure cbNegateClick(Sender: TObject);
procedure cbNestedTextClick(Sender: TObject);
private
fInitializing: Boolean;
fILManager: TILManager;
fComparator: TILFinderBaseClass;
protected
procedure PropagateChange;
procedure FramePrepare;
procedure FrameClear;
procedure FrameSave;
procedure FrameLoad;
public
OnChange: TNotifyEvent;
procedure Initialize(ILManager: TILManager);
procedure Finalize;
procedure Save;
procedure Load;
procedure SetComparator(Comparator: TILFinderBaseClass; ProcessChange: Boolean);
end;
implementation
{$R *.dfm}
procedure TfrmComparatorFrame.PropagateChange;
begin
If Assigned(OnChange) then
OnChange(Self);
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.FramePrepare;
begin
leString.Visible := fComparator is TILTextComparator;
lblVarIndex.Visible := fComparator is TILTextComparator;
seVarIndex.Visible := fComparator is TILTextComparator;
cbCaseSensitive.Visible := fComparator is TILTextComparator;
cbAllowPartial.Visible := fComparator is TILTextComparator;
bvlStrSeparator.Visible := (fComparator is TILTextComparator) and not fComparator.IsLeading;
lblOperator.Visible := (fComparator is TILComparatorBase) and not fComparator.IsLeading;
cmbOperator.Visible := (fComparator is TILComparatorBase) and not fComparator.IsLeading;
cbNegate.Visible := (fComparator is TILComparatorBase) and not fComparator.IsLeading;
cbNestedText.Visible := fComparator is TILElementComparator;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.FrameClear;
begin
leString.Text := '';
seVarIndex.Value := 0;
cbCaseSensitive.Checked := False;
cbAllowPartial.Checked := False;
cmbOperator.ItemIndex := 0;
cbNegate.Checked := False;
cbNestedText.Checked := False;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.FrameSave;
begin
If Assigned(fComparator) then
begin
If not(fComparator is TILElementComparator) then
begin
If fComparator is TILTextComparator then
begin
TILTextComparator(fComparator).Str := leString.Text;
TILTextComparator(fComparator).VariableIndex := seVarIndex.Value - 1;
TILTextComparator(fComparator).CaseSensitive := cbCaseSensitive.Checked;
TILTextComparator(fComparator).AllowPartial := cbAllowPartial.Checked;
end;
If fComparator is TILComparatorBase then
begin
TILComparatorBase(fComparator).Operator := TILSearchOperator(cmbOperator.ItemIndex);
TILComparatorBase(fComparator).Negate := cbNegate.Checked;
end;
end
else TILElementComparator(fComparator).NestedText := cbNestedText.Checked;
end;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.FrameLoad;
begin
If Assigned(fComparator) then
begin
FramePrepare;
fInitializing := True;
try
If not(fComparator is TILElementComparator) then
begin
If fComparator is TILTextComparator then
begin
leString.Text := TILTextComparator(fComparator).Str;
seVarIndex.Value := TILTextComparator(fComparator).VariableIndex + 1;
cbCaseSensitive.Checked := TILTextComparator(fComparator).CaseSensitive;
cbAllowPartial.Checked := TILTextComparator(fComparator).AllowPartial;
end;
If fComparator is TILComparatorBase then
begin
cmbOperator.ItemIndex := Ord(TILComparatorBase(fComparator).Operator);
cbNegate.Checked := TILComparatorBase(fComparator).Negate;
end;
end
else cbNestedText.Checked := TILElementComparator(fComparator).NestedText;
finally
fInitializing := False;
end;
end;
end;
//==============================================================================
procedure TfrmComparatorFrame.Initialize(ILManager: TILManager);
var
i: TILSearchOperator;
begin
fILManager := ILManager;
// fill combobox
cmbOperator.Items.BeginUpdate;
try
cmbOperator.Clear;
For i := Low(TILSearchOperator) to High(TILSearchOperator) do
cmbOperator.Items.Add(IL_SearchOperatorAsStr(i));
finally
cmbOperator.Items.EndUpdate;
end;
If cmbOperator.Items.Count > 0 then
cmbOperator.ItemIndex := 0;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.Finalize;
begin
// nothing to o here
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.Save;
begin
FrameSave;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.Load;
begin
If Assigned(fComparator) then
FrameLoad
else
FrameClear;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.SetComparator(Comparator: TILFinderBaseClass; ProcessChange: Boolean);
var
Reassigned: Boolean;
begin
Reassigned := fComparator = Comparator;
If ProcessChange then
begin
If Assigned(fComparator) and not Reassigned then
FrameSave;
If Assigned(Comparator) then
begin
fComparator := Comparator;
If not Reassigned then
FrameLoad;
end
else
begin
fComparator := nil;
FrameClear;
end;
Visible := Assigned(fComparator);
Enabled := Assigned(fComparator);
end
else fComparator := Comparator;
end;
//==============================================================================
procedure TfrmComparatorFrame.leStringChange(Sender: TObject);
begin
If (fComparator is TILTextComparator) and not fInitializing then
begin
TILTextComparator(fComparator).Str := leString.Text;
PropagateChange;
end;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.seVarIndexChange(Sender: TObject);
begin
If (fComparator is TILTextComparator) and not fInitializing then
begin
TILTextComparator(fComparator).VariableIndex := seVarIndex.Value - 1;
PropagateChange;
end;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.cbCaseSensitiveClick(Sender: TObject);
begin
If (fComparator is TILTextComparator) and not fInitializing then
begin
TILTextComparator(fComparator).CaseSensitive := cbCaseSensitive.Checked;
PropagateChange;
end;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.cbAllowPartialClick(Sender: TObject);
begin
If (fComparator is TILTextComparator) and not fInitializing then
begin
TILTextComparator(fComparator).AllowPartial := cbAllowPartial.Checked;
PropagateChange;
end;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.cmbOperatorChange(Sender: TObject);
begin
If (fComparator is TILComparatorBase) and not fInitializing then
begin
TILComparatorBase(fComparator).Operator := TILSearchOperator(cmbOperator.ItemIndex);
PropagateChange;
end;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.cbNegateClick(Sender: TObject);
begin
If (fComparator is TILComparatorBase) and not fInitializing then
begin
TILComparatorBase(fComparator).Negate := cbNegate.Checked;
PropagateChange;
end;
end;
//------------------------------------------------------------------------------
procedure TfrmComparatorFrame.cbNestedTextClick(Sender: TObject);
begin
If (fComparator is TILElementComparator) and not fInitializing then
begin
TILElementComparator(fComparator).NestedText := cbNestedText.Checked;
PropagateChange;
end;
end;
end.