119 lines
3.9 KiB
ObjectPascal
119 lines
3.9 KiB
ObjectPascal
{-----------------------------------------------------------------------------
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The contents of this file are subject to the Mozilla Public License
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Version 1.1 (the "License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.mozilla.org/MPL/MPL-1.1.html
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
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the specific language governing rights and limitations under the License.
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The Original Code is: JvDataConsumerContextSelectForm.PAS, released on 2002-05-26.
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The Initial Developer of the Original Code is John Doe
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Portions created by John Doe are Copyright (C) 2003 John Doe.
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All Rights Reserved.
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Contributor(s):
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You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
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located at http://jvcl.sourceforge.net
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Known Issues:
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-----------------------------------------------------------------------------}
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// $Id: JvDataConsumerContextSelectForm.pas,v 1.17 2004/09/10 13:33:46 asnepvangers Exp $
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unit JvDataConsumerContextSelectForm;
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{$I jvcl.inc}
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interface
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uses
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SysUtils,
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Windows, Messages, Graphics, Controls, Forms, Dialogs,
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ExtCtrls, StdCtrls,
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JvBaseDsgnForm, JvProviderTreeListFrame, JvDataProviderIntf, Classes;
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type
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TfrmDataConsumerContextSelect = class(TJvBaseDesign)
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pnlButtons: TPanel;
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btnOk: TButton;
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btnCancel: TButton;
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fmeTreeList: TfmeJvProviderTreeList;
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procedure btnOkClick(Sender: TObject);
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private
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FConsumer: IJvDataConsumer;
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public
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property Consumer: IJvDataConsumer read FConsumer write FConsumer;
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end;
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function ConsumerSelectContext(AConsumer: IJvDataConsumer): Boolean;
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implementation
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uses
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JvContextProvider, JvTypes, JvDsgnConsts;
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{$R *.dfm}
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function ConsumerSelectContext(AConsumer: IJvDataConsumer): Boolean;
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var
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SelectForm: TfrmDataConsumerContextSelect;
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CtxProvider: TJvContextProvider;
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ConsumerProvider: IJvDataConsumerProvider;
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ConsumerContext: IJvDataConsumerContext;
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CtxItem: IJvDataItem;
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begin
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Result := False;
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SelectForm := TfrmDataConsumerContextSelect.Create(Application);
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try
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SelectForm.Consumer := AConsumer;
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CtxProvider := TJvContextProvider.Create(SelectForm);
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if Supports(AConsumer, IJvDataConsumerProvider, ConsumerProvider) then
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begin
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CtxProvider.ProviderIntf := ConsumerProvider.GetProvider;
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SelectForm.fmeTreeList.Provider.SetProviderIntf(CtxProvider);
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// Selecting current context (using IJvDataContextSearch)
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if Supports(AConsumer, IJvDataConsumerContext, ConsumerContext) then
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begin
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if ConsumerContext.GetContext <> nil then
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begin
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CtxItem := ((CtxProvider as IJvDataItems) as IJvDataContextSearch).Find(
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ConsumerContext.GetContext, True);
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if CtxItem <> nil then
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SelectForm.fmeTreeList.SelectItemID(CtxItem.GetID);
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end;
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Result := SelectForm.ShowModal = mrOk;
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end
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else
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raise EJVCLException.CreateRes(@RsEConsumerDoesNotSupportContextSelect);
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end
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else
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raise EJVCLException.CreateRes(@RsEIJvDataConsumerProviderIsNotSupported);
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finally
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SelectForm.Free;
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end;
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end;
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procedure TfrmDataConsumerContextSelect.btnOkClick(Sender: TObject);
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var
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ConsumerContext: IJvDataConsumerContext;
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CtxItem: IJvDataItem;
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ContextItemInfo: IJvDataContextItem;
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begin
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if Supports(Consumer, IJvDataConsumerContext, ConsumerContext) then
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begin
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CtxItem := fmeTreeList.GetDataItem(fmeTreeList.GetSelectedIndex);
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if CtxItem <> nil then
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begin
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if Supports(CtxItem, IJvDataContextItem, ContextItemInfo) then
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ConsumerContext.SetContext(ContextItemInfo.GetContext);
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end
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else
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ConsumerContext.SetContext(nil);
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end;
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end;
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end.
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