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jvcllaz: Add new component TDBLookupTreeView with demo.
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@6870 8e941d3f-bd1b-0410-a28a-d453659cc2b4
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<?xml version="1.0" encoding="UTF-8"?>
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<CONFIG>
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<ProjectOptions>
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<Version Value="12"/>
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<PathDelim Value="\"/>
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<General>
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<Flags>
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<CompatibilityMode Value="True"/>
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</Flags>
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<SessionStorage Value="InProjectDir"/>
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<Title Value="JvDBLookupTreeViewDemo"/>
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<Scaled Value="True"/>
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<ResourceType Value="res"/>
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<UseXPManifest Value="True"/>
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<XPManifest>
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<DpiAware Value="True"/>
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</XPManifest>
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<Icon Value="0"/>
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</General>
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<BuildModes Count="1">
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<Item1 Name="Default" Default="True"/>
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</BuildModes>
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<PublishOptions>
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<Version Value="2"/>
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</PublishOptions>
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<RunParams>
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<FormatVersion Value="2"/>
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<Modes Count="0"/>
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</RunParams>
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<RequiredPackages Count="3">
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<Item1>
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<PackageName Value="JvDBLazR"/>
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</Item1>
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<Item2>
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<PackageName Value="FCL"/>
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</Item2>
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<Item3>
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<PackageName Value="LCL"/>
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</Item3>
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</RequiredPackages>
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<Units Count="2">
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<Unit0>
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<Filename Value="JvDBLookupTreeViewDemo.lpr"/>
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<IsPartOfProject Value="True"/>
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</Unit0>
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<Unit1>
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<Filename Value="main.pas"/>
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<IsPartOfProject Value="True"/>
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<ComponentName Value="Form1"/>
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<HasResources Value="True"/>
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<ResourceBaseClass Value="Form"/>
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</Unit1>
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</Units>
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</ProjectOptions>
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<CompilerOptions>
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<Version Value="11"/>
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<PathDelim Value="\"/>
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<Target>
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<Filename Value="..\..\bin\JvDBLookupTreeViewDemo"/>
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</Target>
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<SearchPaths>
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<IncludeFiles Value="$(ProjOutDir)"/>
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<UnitOutputDirectory Value="lib\$(TargetCPU)-$(TargetOS)"/>
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</SearchPaths>
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<Linking>
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<Options>
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<Win32>
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<GraphicApplication Value="True"/>
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</Win32>
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</Options>
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</Linking>
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</CompilerOptions>
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</CONFIG>
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@ -0,0 +1,22 @@
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program JvDBLookupTreeViewDemo;
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{$mode objfpc}{$H+}
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uses
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{$IFDEF UNIX}{$IFDEF UseCThreads}
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cthreads,
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{$ENDIF}{$ENDIF}
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Interfaces, // this includes the LCL widgetset
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Forms, main
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{ you can add units after this };
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{$R *.res}
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begin
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RequireDerivedFormResource := True;
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Application.Scaled := True;
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Application.Initialize;
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Application.CreateForm(TForm1, Form1);
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Application.Run;
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end.
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176
components/jvcllaz/examples/JvDBLookupTreeView/main.lfm
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176
components/jvcllaz/examples/JvDBLookupTreeView/main.lfm
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object Form1: TForm1
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Left = 374
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Height = 477
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Top = 164
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Width = 594
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Caption = 'JvDBLookup controls'
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ClientHeight = 477
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ClientWidth = 594
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OnShow = FormShow
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LCLVersion = '2.1.0.0'
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object JvDBLookupTreeView1: TJvDBLookupTreeView
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AnchorSideLeft.Control = Bevel1
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AnchorSideLeft.Side = asrBottom
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AnchorSideRight.Control = Owner
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AnchorSideRight.Side = asrBottom
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AnchorSideBottom.Control = Owner
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AnchorSideBottom.Side = asrBottom
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Left = 307
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Height = 349
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Top = 112
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Width = 271
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BorderSpacing.Right = 16
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BorderSpacing.Bottom = 16
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DataField = 'ID'
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DataSource = DSPersons
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KeyField = 'RelID'
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ListField = 'RelName'
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ListSource = DSRelationships
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TabOrder = 0
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Anchors = [akTop, akLeft, akRight, akBottom]
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MasterField = 'RelID'
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DetailField = 'RelParentID'
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StartMasterValue = '0'
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Indent = 15
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end
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object Label2: TLabel
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AnchorSideTop.Control = DBNavigator1
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AnchorSideTop.Side = asrBottom
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Left = 16
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Height = 15
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Top = 92
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Width = 39
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BorderSpacing.Top = 16
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Caption = 'Person:'
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ParentColor = False
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end
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object DBNavigator1: TDBNavigator
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AnchorSideLeft.Control = Owner
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AnchorSideTop.Control = Panel1
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AnchorSideTop.Side = asrBottom
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Left = 16
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Height = 26
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Top = 50
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Width = 241
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BevelOuter = bvNone
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BorderSpacing.Left = 16
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BorderSpacing.Top = 16
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ChildSizing.EnlargeHorizontal = crsScaleChilds
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ChildSizing.EnlargeVertical = crsScaleChilds
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ChildSizing.ShrinkHorizontal = crsScaleChilds
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ChildSizing.ShrinkVertical = crsScaleChilds
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ChildSizing.Layout = cclLeftToRightThenTopToBottom
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ChildSizing.ControlsPerLine = 100
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ClientHeight = 26
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ClientWidth = 241
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DataSource = DSPersons
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Options = []
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TabOrder = 1
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end
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object Label3: TLabel
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AnchorSideLeft.Control = Bevel1
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = Label2
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Left = 307
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Height = 15
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Top = 92
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Width = 146
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Caption = 'Relationship to protagonist:'
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ParentColor = False
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end
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object Panel1: TPanel
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Left = 0
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Height = 34
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Top = 0
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Width = 594
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Align = alTop
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Caption = '(Some) persons in the novel "The Grapes of Wrath" by John Steinbeck'
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Color = clBackground
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Font.Color = clHighlightText
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Font.Height = -16
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Font.Style = [fsBold]
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ParentColor = False
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ParentFont = False
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TabOrder = 2
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end
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object DBGrid1: TDBGrid
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AnchorSideLeft.Control = DBNavigator1
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AnchorSideTop.Control = Label2
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = Bevel1
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AnchorSideBottom.Control = Owner
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AnchorSideBottom.Side = asrBottom
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Left = 16
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Height = 350
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Top = 111
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Width = 271
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Anchors = [akTop, akLeft, akRight, akBottom]
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AutoFillColumns = True
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BorderSpacing.Top = 4
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BorderSpacing.Bottom = 16
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Color = clWindow
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Columns = <
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item
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Title.Caption = 'Name'
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Width = 238
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FieldName = 'Name'
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end>
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DataSource = DSPersons
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TabOrder = 3
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OnPrepareCanvas = DBGrid1PrepareCanvas
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end
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object Bevel1: TBevel
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AnchorSideLeft.Control = Owner
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AnchorSideLeft.Side = asrCenter
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Left = 287
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Height = 50
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Top = 78
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Width = 20
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Shape = bsSpacer
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end
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object Persons: TBufDataset
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FieldDefs = <
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item
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Name = 'ID'
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DataType = ftInteger
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end
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item
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Name = 'Name'
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DataType = ftString
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Size = 30
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end>
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left = 80
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top = 160
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end
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object Relationships: TBufDataset
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FieldDefs = <
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item
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Name = 'RelID'
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DataType = ftInteger
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end
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item
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Name = 'RelName'
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DataType = ftString
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Size = 30
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end
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item
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Name = 'RelParentID'
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DataType = ftString
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Size = 16
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end>
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left = 424
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top = 160
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end
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object DSPersons: TDataSource
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AutoEdit = False
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DataSet = Persons
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left = 80
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top = 224
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end
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object DSRelationships: TDataSource
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AutoEdit = False
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DataSet = Relationships
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left = 424
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top = 224
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end
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end
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111
components/jvcllaz/examples/JvDBLookupTreeView/main.pas
Normal file
111
components/jvcllaz/examples/JvDBLookupTreeView/main.pas
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unit main;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, BufDataset, DB, Forms, Controls, Graphics, Dialogs,
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DBGrids, JvDBLookup, JvDBLookupTreeView, JvDBTreeView, ExtCtrls, DBCtrls,
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StdCtrls, Grids;
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type
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{ TForm1 }
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TForm1 = class(TForm)
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Bevel1: TBevel;
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DBGrid1: TDBGrid;
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DBNavigator1: TDBNavigator;
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Label2: TLabel;
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Label3: TLabel;
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Panel1: TPanel;
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JvDBLookupTreeView1: TJvDBLookupTreeView;
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Persons: TBufDataset;
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Relationships: TBufDataset;
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DSPersons: TDataSource;
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DSRelationships: TDataSource;
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procedure DBGrid1PrepareCanvas(sender: TObject; DataCol: Integer;
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Column: TColumn; AState: TGridDrawState);
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procedure FormShow(Sender: TObject);
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private
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public
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Image: TImage;
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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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{ Assignment of table fields to lookup tree
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Table "Persons" --> Master table
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Table "Relationships" --> Lookup table
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Establish the tree for lookup table:
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DSRelationships --> LookupTreeView.ListSource
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Field "RelID" --> LookuptreeView.MasterField
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Field "RelParentID" --> LookupTreeView.DetailField
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Field "RelName" --> LookupTreeView.ListField // Node text
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Establish lookup connection:
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DSPersons --> LookupTreeView.Datasource
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Field "ID" --> LookupTreeView.DataField
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Field "RelID" --> LookupTreeView.KeyField
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}
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procedure TForm1.FormShow(Sender: TObject);
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begin
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Relationships.CreateDataset;
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Relationships.Open;
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Relationships.AppendRecord([ 1, 'Grandparents', 0]);
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Relationships.AppendRecord([10, 'Parents', 1]);
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Relationships.AppendRecord([11, 'Uncle', 1]);
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Relationships.AppendRecord([12, 'Aunt', 1]);
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Relationships.AppendRecord([20, 'Protagonist', 10]);
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Relationships.AppendRecord([21, 'Brother', 10]);
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Relationships.AppendRecord([22, 'Sister', 10]);
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Relationships.AppendRecord([23, 'Brother-in-law', 21]);
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Relationships.AppendRecord([24, 'Brother-in-law', 22]);
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Relationships.AppendRecord([25, 'Sister-in-law', 21]);
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Relationships.AppendRecord([26, 'Sister-in-law', 22]);
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Relationships.AppendRecord([30, 'Son', 20]);
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Relationships.AppendRecord([31, 'Daughter', 20]);
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Relationships.AppendRecord([90, 'Friend', 0]);
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Relationships.AppendRecord([91, 'Neighbor', 0]);
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// data from: https://en.wikipedia.org/wiki/The_Grapes_of_Wrath
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Persons.CreateDataset;
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Persons.Open;
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Persons.AppendRecord([20, 'Tom Joad']); // Protagonist
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Persons.AppendRecord([11, 'Uncle John Joad']);
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Persons.Appendrecord([10, 'Ma Joad']); // name not mentioned
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Persons.AppendRecord([10, 'Tom Joad']); // Pa Joad
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Persons.AppendRecord([21, 'Al Joad']);
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Persons.AppendRecord([21, 'Noah Joad']);
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Persons.AppendRecord([22, 'Ruthie Joad']);
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Persons.AppendRecord([22, 'Winfield Joad']);
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Persons.AppendRecord([22, 'Rose of Sharon Joad Rivers']);
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Persons.AppendRecord([ 1, 'William James Joad']);
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Persons.AppendRecord([ 1, 'Granma Joad']); // name not mentioned
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Persons.AppendRecord([90, 'Jim Casy']);
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Persons.AppendRecord([91, 'Muley Graves']);
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Persons.AppendRecord([24, 'Connie Rivers']);
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Persons.IndexFieldNames := 'Name';
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Persons.First;
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end;
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procedure TForm1.DBGrid1PrepareCanvas(sender: TObject; DataCol: Integer;
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Column: TColumn; AState: TGridDrawState);
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begin
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if Persons.FieldByName('ID').AsInteger = 20 then // Protagonist
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DBGrid1.Canvas.Font.Style := [fsBold];
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end;
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end.
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@ -7,7 +7,7 @@ object Form1: TForm1
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ClientHeight = 509
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ClientWidth = 758
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OnCreate = FormCreate
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LCLVersion = '1.9.0.0'
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LCLVersion = '2.1.0.0'
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object DBGrid1: TDBGrid
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AnchorSideLeft.Control = Owner
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AnchorSideTop.Control = Owner
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@ -67,6 +67,14 @@ begin
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JvDBTreeView1.FullCollapse;
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end;
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{ Assignment of table fields to tree
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Table Tree
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ID --> Tree.MasterField
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ParentID --> Tree.DetailField
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Name --> Tree.itemField
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Icon --> Tree.IconField
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}
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procedure TForm1.FormCreate(Sender: TObject);
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procedure AddRecord(ID, ParentID: Integer; AName: String; AIcon: Integer = -1);
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