mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-10-31 17:41:37 +01:00
474 lines
11 KiB
ObjectPascal
474 lines
11 KiB
ObjectPascal
unit testform;
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{$mode objfpc} {$H+}
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interface
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uses
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Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ComCtrls,
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Buttons, StdCtrls, ExtCtrls, Spin;
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type
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{ TForm1 }
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TForm1 = class(TForm)
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Button1: TButton;
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Button2: TButton;
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Button3: TButton;
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Button4: TButton;
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Button5: TButton;
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Button6: TButton;
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CheckBox1: TCheckBox;
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CheckBox2: TCheckBox;
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CheckBox3: TCheckBox;
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CheckBox4: TCheckBox;
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CheckBox5: TCheckBox;
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ChBoxOwnerData: TCheckBox;
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CheckBox6: TCheckBox;
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CheckBox7: TCheckBox;
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HideSelection: TCheckBox;
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ComboBox1: TComboBox;
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ComboBox2: TComboBox;
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ComboBox3: TComboBox;
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ComboBox4: TComboBox;
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Edit1: TEdit;
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Edit10: TEdit;
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Edit11: TEdit;
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Edit2: TEdit;
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Edit3: TEdit;
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Edit4: TEdit;
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Edit5: TEdit;
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Edit6: TEdit;
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Edit7: TEdit;
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Edit8: TEdit;
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Edit9: TEdit;
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ImageList1: TImageList;
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Label1: TLabel;
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Label10: TLabel;
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Label11: TLabel;
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Label12: TLabel;
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Label13: TLabel;
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Label14: TLabel;
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lblSetCount: TLabel;
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Label2: TLabel;
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Label3: TLabel;
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Label4: TLabel;
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Label5: TLabel;
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Label6: TLabel;
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Label7: TLabel;
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Label8: TLabel;
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Label9: TLabel;
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ListView1: TListView;
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PageControl1: TPageControl;
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Page1: TTabSheet;
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Page2: TTabSheet;
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Page3: TTabSheet;
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OwnerDataCount: TSpinEdit;
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procedure Button1Click(Sender: TObject);
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procedure Button2Click(Sender: TObject);
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procedure Button3Click(Sender: TObject);
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procedure Button4Click(Sender: TObject);
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procedure Button5Click(Sender: TObject);
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procedure Button6Click(Sender: TObject);
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procedure ChBoxOwnerDataChange(Sender: TObject);
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procedure CheckBox1Click (Sender: TObject );
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procedure CheckBox2Click (Sender: TObject );
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procedure CheckBox3Click(Sender: TObject);
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procedure CheckBox4Click(Sender: TObject);
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procedure CheckBox5Click(Sender: TObject);
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procedure CheckBox6Change(Sender: TObject);
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procedure CheckBox7Change(Sender: TObject);
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procedure ComboBox1Change (Sender: TObject );
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procedure ComboBox2Change(Sender: TObject);
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procedure ComboBox3Change(Sender: TObject);
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procedure ComboBox4Change(Sender: TObject);
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procedure Edit10Change (Sender: TObject );
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procedure Edit11Change(Sender: TObject);
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procedure Edit1Change (Sender: TObject );
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procedure Edit2Change (Sender: TObject );
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procedure Edit3Change(Sender: TObject);
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procedure Edit4Change(Sender: TObject);
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procedure Edit5Change(Sender: TObject);
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procedure Edit6Change(Sender: TObject);
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procedure Edit7Change(Sender: TObject);
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procedure Edit8Change(Sender: TObject);
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procedure HideSelectionChange(Sender: TObject);
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procedure ListView1ColumnClick(Sender: TObject; Column: TListColumn);
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procedure ListView1Data(Sender: TObject; Item: TListItem);
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procedure ListView1SelectItem(Sender: TObject; Item: TListItem; Selected: Boolean);
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procedure OwnerDataCountChange(Sender: TObject);
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private
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procedure ShowItemData;
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procedure ShowColumnData;
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protected
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public
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{ public declarations }
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end;
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var
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Form1: TForm1;
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implementation
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{$R *.lfm}
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{ TForm1 }
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procedure TForm1.Button1Click(Sender: TObject);
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var
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Item: TListItem;
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begin
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if ListView1.OwnerData then
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// OwnerDataCount.OnChange() triggers new items count.
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OwnerDataCount.Value := ListView1.Items.Count + 1
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else
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begin
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Item := ListView1.Items.Insert(StrToIntDef(Edit1.Text, 0));
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Item.Caption := Format('Item %d', [ListView1.Items.Count]);
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end;
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end;
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procedure TForm1.Button2Click(Sender: TObject);
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var
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Item: TListItem;
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Idx: Integer;
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begin
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if ListView1.OwnerData then
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OwnerDataCount.Value := ListView1.Items.Count - 1
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else
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begin
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Idx := StrToIntDef(Edit1.Text, 0);
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if (Idx < 0) or (Idx > ListView1.Items.Count - 1) then
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exit;
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Item := ListView1.Items[Idx];
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Item.Free;
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end;
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end;
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procedure TForm1.Button3Click(Sender: TObject);
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns.Add;
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Column.Caption := Format('Column %d', [ListView1.Columns.Count]);
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Column.Index := (StrToIntDef(Edit2.Text, 0));
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end;
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procedure TForm1.Button4Click(Sender: TObject);
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
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Column.Free;
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end;
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procedure TForm1.Button5Click(Sender: TObject);
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var
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Item: TListItem;
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Idx: Integer;
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begin
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Idx := StrToIntDef(Edit1.Text, 0);
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if (Idx < 0) or (Idx > ListView1.Items.Count - 1) then
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exit;
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Item := ListView1.Items[Idx];
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Item.Selected := True;
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end;
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procedure TForm1.Button6Click(Sender: TObject);
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var
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Item: TListItem;
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Idx: Integer;
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begin
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Idx := StrToIntDef(Edit1.Text, 0);
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if (Idx < 0) or (Idx > ListView1.Items.Count - 1) then
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exit;
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Item := ListView1.Items[Idx];
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Item.Focused := True;
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end;
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procedure TForm1.ChBoxOwnerDataChange(Sender: TObject);
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var
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B: Boolean;
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AItem: TListItem;
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begin
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B := TCheckBox(Sender).Checked;
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lblSetCount.Enabled := B;
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OwnerDataCount.Enabled := B;
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ListView1.BeginUpdate;
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try
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ListView1.Clear; // first clear all items because virtual and normal items are different classes
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finally
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ListView1.EndUpdate;
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end;
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ListView1.OwnerData := B;
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ListView1.BeginUpdate;
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try
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if B then
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ListView1.Items.Count := OwnerDataCount.Value
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else
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begin
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with ListView1 do
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begin
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AItem := Items.Add;
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AItem.Caption := 'New 1';
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AItem.ImageIndex := 0;
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AItem.StateIndex := 0;
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AItem.SubItems.Add('Sub 1');
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AItem := Items.Add;
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AItem.Caption := 'New 2';
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end;
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end;
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finally
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ListView1.EndUpdate;
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end;
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end;
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procedure TForm1.CheckBox1Click(Sender: TObject);
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
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Column.Visible := CheckBox1.Checked;
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end;
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procedure TForm1.CheckBox2Click(Sender: TObject);
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
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Column.Autosize := CheckBox2.Checked;
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end;
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procedure TForm1.CheckBox3Click(Sender: TObject);
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begin
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Listview1.Multiselect := CheckBox3.Checked;
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end;
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procedure TForm1.CheckBox4Click(Sender: TObject);
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begin
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ListView1.RowSelect := CheckBox4.Checked;
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end;
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procedure TForm1.CheckBox5Click(Sender: TObject);
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begin
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ListView1.ShowColumnHeaders := CheckBox5.Checked;
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end;
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procedure TForm1.CheckBox6Change(Sender: TObject);
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begin
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ListView1.AutoWidthLastColumn := TCheckBox(Sender).Checked;
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end;
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procedure TForm1.CheckBox7Change(Sender: TObject);
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begin
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ListView1.ReadOnly := TCheckBox(Sender).Checked;
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end;
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procedure TForm1.ComboBox1Change (Sender: TObject );
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
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Column.Alignment := TAlignment(ComboBox1.ItemIndex);
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end;
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procedure TForm1.ComboBox2Change(Sender: TObject);
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begin
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ListView1.Scrollbars := TScrollStyle(ComboBox2.ItemIndex);
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end;
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procedure TForm1.ComboBox3Change(Sender: TObject);
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begin
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ListView1.SortType := TSortType(ComboBox3.ItemIndex);
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end;
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procedure TForm1.ComboBox4Change(Sender: TObject);
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begin
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ListView1.ViewStyle := TViewStyle(ComboBox4.ItemIndex);
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end;
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procedure TForm1.Edit10Change(Sender: TObject);
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var
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Item: TListItem;
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n, idx: Integer;
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begin
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idx := StrToIntDef(Edit1.Text, 0);
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if (idx < 0) or (idx > ListView1.Items.Count - 1) then
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exit;
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Item := ListView1.Items[idx];
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for n := Item.SubItems.Count to ListView1.Columns.Count - 2 do
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Item.Subitems.Add('');
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n := StrToIntDef(Edit5.Text, 0);
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if n >= ListView1.Columns.Count then Exit;
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idx := StrToIntDef(Edit10.Text, -1);
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if n = 0 then
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Item.ImageIndex := idx
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else
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Item.SubitemImages[n - 1] := idx;
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end;
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procedure TForm1.Edit11Change(Sender: TObject);
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var
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i: Integer;
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begin
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i := 0;
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if TryStrToInt(Edit11.Text, i) then
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ListView1.SortColumn := i;
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end;
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procedure TForm1.Edit1Change(Sender: TObject);
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begin
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ShowItemData;
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end;
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procedure TForm1.Edit2Change(Sender: TObject);
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begin
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ShowColumnData;
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end;
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procedure TForm1.Edit3Change(Sender: TObject);
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
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Column.Caption := Edit3.Text;
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end;
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procedure TForm1.Edit4Change(Sender: TObject);
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var
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Item: TListItem;
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n: Integer;
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begin
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n := StrToIntDef(Edit1.Text, 0);
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if (n < 0) or (n > ListView1.Items.Count - 1) then
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exit;
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Item := ListView1.Items[n];
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for n := Item.SubItems.Count to ListView1.Columns.Count - 2 do
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Item.Subitems.Add('');
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n := StrToIntDef(Edit5.Text, 0);
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if n >= ListView1.Columns.Count then Exit;
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if n = 0
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then Item.Caption := Edit4.Text
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else Item.Subitems[n - 1] := Edit4.Text;
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end;
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procedure TForm1.Edit5Change(Sender: TObject);
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begin
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ShowItemData;
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end;
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procedure TForm1.Edit6Change(Sender: TObject);
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
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Column.Width := StrToIntDef(Edit6.Text, 0);
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end;
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procedure TForm1.Edit7Change (Sender: TObject );
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
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Column.MinWidth := StrToIntDef(Edit7.Text, 0);
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end;
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procedure TForm1.Edit8Change (Sender: TObject );
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
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Column.MaxWidth := StrToIntDef(Edit8.Text, 0);
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end;
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procedure TForm1.HideSelectionChange(Sender: TObject);
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begin
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Listview1.HideSelection := HideSelection.Checked;
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end;
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procedure TForm1.ListView1ColumnClick(Sender: TObject; Column: TListColumn);
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begin
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Edit2.Text := IntToStr(Column.Index);
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Edit5.Text := IntToStr(Column.Index);
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end;
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procedure TForm1.ListView1Data(Sender: TObject; Item: TListItem);
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var
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i: Integer;
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begin
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if (ListView1.ColumnCount > 0) then
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begin
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Item.Caption := 'OwnerData item '+IntToStr(Item.Index);
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Item.ImageIndex := -1;
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Item.StateIndex := -1;
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for i := 1 to ListView1.ColumnCount - 1 do
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Item.SubItems.Add('OwnerData subitem ['+IntToStr(Item.Index)+','+IntToStr(i)+']');
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end;
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end;
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procedure TForm1.ListView1SelectItem(Sender: TObject; Item: TListItem; Selected: Boolean);
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var
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subIdx: Integer;
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begin
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if not Selected then Exit;
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Edit1.Text := IntToStr(Item.Index);
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end;
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procedure TForm1.OwnerDataCountChange(Sender: TObject);
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begin
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if not ListView1.OwnerData then
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exit;
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ListView1.BeginUpdate;
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ListView1.Items.Count := TSpinEdit(Sender).Value;
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ListView1.EndUpdate;
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end;
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procedure TForm1.ShowItemData;
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var
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Item: TListItem;
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idx: Integer;
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begin
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idx := StrToIntDef(Edit1.Text, 0);
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if (idx < 0) or (idx > ListView1.Items.Count - 1) then
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exit;
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Item := ListView1.Items[idx];
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idx := StrToIntDef(Edit5.Text, 0);
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if idx = 0
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then begin
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Edit4.Text := Item.Caption;
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Edit10.Text := IntToStr(Item.ImageIndex);
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Exit;
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end;
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if Item.SubItems.Count <= idx - 1 then Exit;
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Edit4.Text := Item.SubItems[idx - 1];
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Edit10.Text := IntToStr(Item.SubItemImages[idx - 1]);
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end;
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procedure TForm1.ShowColumnData;
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var
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Column: TListColumn;
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begin
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Column := ListView1.Columns[StrToIntDef(Edit2.Text, 0)];
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Edit3.Text := Column.Caption;
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Edit6.Text := IntToStr(Column.Width);
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Edit7.Text := IntToStr(Column.MinWidth);
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Edit8.Text := IntToStr(Column.MaxWidth);
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Edit9.Text := IntToStr(Column.Imageindex);
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ComboBox1.ItemIndex := Ord(Column.Alignment);
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CheckBox1.Checked := Column.Visible;
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CheckBox2.Checked := Column.AutoSize;
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end;
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end.
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