[이클립스RCP(ECLIPSE RCP)] EclipseRCP 체크박스에서 재귀선택 이벤트 (EclipseRCP recursive selection event in checkbox viewer) : 월풍도원(月風道院)

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EclipseRCP 체크박스에서 재귀선택 이벤트 (EclipseRCP recursive selection event in checkbox viewer)

It’s Tips for CheckboxViewer.

I found bug that throw selection event three times in CheckboxViewer(CheckboxTreeViewer,CheckboxTableViewer).

This bug appear when user click checkbox on selected object.

Then I disable selection as well as “viewer.setSelection(null);";

And I need the checkbox behave likes the radio button.

I implemented it through history clear.

Code:

boolean isHistory;
Object currentObject;
 
public void selectionChanged(SelectionChangedEvent event) {
    if(isHistory) {
      isHistory = false;
      return;
    }
  if (!event.getSelection().isEmpty()) {

      if (event.getSelection() instanceof IStructuredSelection) {

          if(currentObject!= null) {

            if(! currentObject.equals((IStructuredSelection)event.getSelection()).getFirstElement())) {

              isHistory = true;

            viewer.setChecked(currentObject, false);

              viewer.setSelection(new StructuredSelection(currentObject);

              isHistory = false;

              viewer.setSelection(null);

            }

          }

        currentObject = (IStructuredSelection)event.getSelection()).getFirstElement();

            viewer.setChecked(currentObject , !viewer.getChecked(currentObject ));

            viewer.getTable().setSelection(currentObject.index);

          viewer.setSelection(null);

      }

    }

  }

by 月風

`boolean isHistory;`
`Object currentObject;`

`public void selectionChanged(SelectionChangedEvent event) {`
`if(isHistory) {`
`isHistory = false;`
`return;`
`}`
`if (!event.getSelection().isEmpty()) {`
	`if (event.getSelection() instanceof IStructuredSelection) {`
	`if(currentObject!= null) {`
	`if(! currentObject.equals((IStructuredSelection)event.getSelection()).getFirstElement())) {`
	`isHistory = true;`
	`viewer.setChecked(currentObject, false);`
	`viewer.setSelection(new StructuredSelection(currentObject);`
	`isHistory = false;`
	`viewer.setSelection(null);`
	`}`
	`}`
	`currentObject = (IStructuredSelection)event.getSelection()).getFirstElement();`
	`viewer.setChecked(currentObject , !viewer.getChecked(currentObject ));`
	`viewer.getTable().setSelection(currentObject.index);`
	`viewer.setSelection(null);`
	`}`
	`}`
	`}`

[이클립스RCP(ECLIPSE RCP)] EclipseRCP 체크박스에서 재귀선택 이벤트 (EclipseRCP recursive selection event in checkbox viewer)

Tags : 이클립스RCP, development, Eclipse RCP, IT, Java, recursive, selection event