Вот фрагмент кода, как я разделил редактор в среде E4.
Это, как я выполняю: splitEditor(0.5f, 3, currentEditor, newEditor)
@Override
public void splitEditor(float ratio, int where, IEditorPart containerEditor, IEditorPart editorToInsert) {
MPart container = containerEditor.getSite().getService(MPart.class);
if (container == null) {
return;
}
MPart toInsert = editorToInsert.getSite().getService(MPart.class);
if (toInsert == null) {
return;
}
insertEditor(ratio, where, container, toInsert);
}
/**
* Inserts the editor into the container editor.
*
* @param ratio the ratio
* @param where where to insert ({@link EModelService#LEFT_OF}, {@link EModelService#RIGHT_OF}, {@link EModelService#ABOVE} or
* {@link EModelService#BELOW})
* @param containerEditor the container editor
* @param editorToInsert the editor to insert
*/
public void insertEditor(float ratio, int where, MPart containerEditor, MPart editorToInsert) {
IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
EModelService service = window.getService(EModelService.class);
MPartStack toInsert = getPartStack(editorToInsert);
MArea area = getArea(containerEditor);
MPartSashContainerElement relToElement = area.getChildren().get(0);
service.insert(toInsert, relToElement, where, ratio);
}
@SuppressWarnings("restriction")
private MPartStack getPartStack(MPart childPart) {
MStackElement stackElement = childPart;
MPartStack newStack = org.eclipse.e4.ui.model.application.ui.basic.impl.BasicFactoryImpl.eINSTANCE.createPartStack();
newStack.getChildren().add(stackElement);
newStack.setSelectedElement(stackElement);
return newStack;
}
private MArea getArea(MPart containerPart) {
MUIElement targetParent = containerPart.getParent();
while (!(targetParent instanceof MArea)) {
targetParent = targetParent.getParent();
}
MArea area = (MArea) targetParent;
return area;
}