TcxEditRepositorySparklineItem Class

A repository item that stores sparkline settings.

Declaration

TcxEditRepositorySparklineItem = class(
    TcxEditRepositoryItem
)

Remarks

A sparkline is a small line, point, area, or bar chart designed to visualize data as a minimalistic diagram without axes and additional labels. Sparklines are particularly useful when you need to display trends in a container control.

The TcxEditRepositorySparklineItem class overrides the Properties property that allows you to access and customize sparkline settings.

Edit Repository Items and Standalone Editors

Edit repository items are useful when you need to share the same settings between multiple editors of the same type. To accomplish this goal, you can assign the same edit repository item to RepositoryItem properties of all target editors.

Edit Repository Items and Container Controls

A container control item (such as a toolbar edit item or a column (or any other data item) in a Data Grid, Vertical Grid, or Tree List control) can embed an in-place editor shipped with the ExpressEditors Library. An in-place editor exists (and, therefore, has its own WinAPI handle) only when the target container control item is being edited. Otherwise, the container control item displays a static editor image for resource usage optimization.

Create a Sparkline Repository Item at Design Time

To create a sparkline repository item at design time, double-click a TcxEditRepository component to invoke its collection editor.

The collection editor dialog allows you to manage repository items. Click the Add… button to invoke a repository item creation dialog.

Create a Sparkline Repository Item in Code

The following code example creates a sparkline repository item, creates a series, and assigns the created repository item to two existing unbound sparkline editors:

Delphi

uses cxEdit, cxEditRepositoryItems;
// ...
var
  ASparklineRepositoryItem: TcxEditRepositorySparklineItem;
  ARepositoryItem: TcxEditRepositoryItem;
begin
  ARepositoryItem := cxEditRepository1.CreateItem(TcxEditRepositorySparklineItem);
  ASparklineRepositoryItem := ARepositoryItem as TcxEditRepositorySparklineItem;
  ASparklineRepositoryItem.Properties.Padding.All := 4;  // Increases padding
  // Assigns the created repository item to two existing unbound sparkline editors
  dxSparklineEdit1.RepositoryItem := ASparklineRepositoryItem;
  dxSparklineEdit2.RepositoryItem := ASparklineRepositoryItem;
end;

C++

#include "cxEdit.hpp"
#include "cxEditRepositoryItems.hpp"
// ...
  TcxEditRepositorySparklineItem *ASparklineRepositoryItem;
  TcxEditRepositoryItem *ARepositoryItem;
  // ...
  ARepositoryItem = cxEditRepository1->CreateItem(__classid(TcxEditRepositorySparklineItem));
  ASparklineRepositoryItem = dynamic_cast<TcxEditRepositorySparklineItem*>(ARepositoryItem);
  ASparklineRepositoryItem->Properties->Padding->All = 4; // Increases padding
  // Assigns the created repository item to two existing unbound sparkline editors
  dxSparklineEdit1->RepositoryItem = ASparklineRepositoryItem;
  dxSparklineEdit2->RepositoryItem = ASparklineRepositoryItem;

Sparkline Repository Item Deletion

To delete all sparkline repository items in a TcxEditRepository component, call its RemoveItems procedure and pass a reference to the TcxEditRepositorySparklineItem class as a parameter.

If you need to delete an individual sparkline repository item, release it directly in code (call the Free procedure in Delphi or use the delete keyword in C++Builder).

Inheritance

TObject

TPersistent

TComponent

TcxEditRepositoryItem

TcxEditRepositorySparklineItem