[GEF] 무작정 따라하기 - Part. 16 Copy & Paste

우선 기본적인 것들은 이번을 마지막으로 할 예정입니다.

다른 정보들은 팁으로다가~~

시작합니다.

Model 수정
복사할 대상인 SimpleElement 의 clone() 메소드를 오버라이딩합니다. public 으로다가...
public class SimpleElement extends ElementBase { ... @Override public Object clone() throws CloneNotSupportedException { SimpleElement elem = new SimpleElement(); elem.setBackgroundColor(getBackgroundColor()); elem.setBorder(getBorder()); elem.setFontData(getFontData()); elem.setForegroundColor(getForegroundColor()); elem.setParent(getParent()); elem.setText(getText()); Rectangle rect = getLayout().getCopy(); rect.x += 10; rect.y += 10; elem.setLayout(rect); return elem; } }



Copy Action & Commnd
복사를 위해서 등록할 Action 과 명령을 처리하는 Command가 필요합니다.
package kr.co.vicki.formwizard.actions; import java.util.Iterator; import java.util.List; import kr.co.vicki.formwizard.model.ElementBase; import kr.co.vicki.formwizard.model.commands.CopyElementCommand; import org.eclipse.gef.EditPart; import org.eclipse.gef.commands.Command; import org.eclipse.gef.ui.actions.SelectionAction; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.actions.ActionFactory; public class CopyElementAction extends SelectionAction { public CopyElementAction(IWorkbenchPart part) { super(part); setLazyEnablementCalculation(true); } @Override protected void init() { super.init(); ISharedImages sharedImages = PlatformUI.getWorkbench().getSharedImages(); setText("Copy"); setId(ActionFactory.COPY.getId()); setHoverImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_COPY)); setImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_COPY)); setDisabledImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_COPY_DISABLED)); setEnabled(true); } private Command createCopyCommand(List<Object> selectedObjects) { if (selectedObjects == null || selectedObjects.isEmpty()) return null; CopyElementCommand cmd = new CopyElementCommand(); for (Iterator<Object> it=selectedObjects.iterator(); it.hasNext(); ) { EditPart ep = (EditPart) it.next(); ElementBase element = (ElementBase) ep.getModel(); if (!cmd.isCopyableElement(element)) return null; cmd.addElement(element); } return cmd; } @Override protected boolean calculateEnabled() { Command cmd = createCopyCommand(getSelectedObjects()); if (cmd == null) return false; return cmd.canExecute(); } @Override public void run() { Command cmd = createCopyCommand(getSelectedObjects()); if (cmd != null && cmd.canExecute()) cmd.execute(); } }
package kr.co.vicki.formwizard.model.commands; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import kr.co.vicki.formwizard.model.ElementBase; import kr.co.vicki.formwizard.model.SimpleElement; import org.eclipse.gef.commands.Command; import org.eclipse.gef.ui.actions.Clipboard; public class CopyElementCommand extends Command { private List<ElementBase> list = new ArrayList<ElementBase>(); public boolean addElement(ElementBase element) { if (!list.contains(element)) { return list.add(element); } return false; } @Override public boolean canExecute() { if (list == null || list.isEmpty()) return false; for (Iterator<ElementBase> it=list.iterator(); it.hasNext(); ) { if (!isCopyableElement(it.next())) return false; } return true; } @Override public void execute() { if (canExecute()) Clipboard.getDefault().setContents(list); } @Override public boolean canUndo() { return false; } public boolean isCopyableElement(ElementBase element) { if (element instanceof SimpleElement) return true; return false; } protected List<ElementBase> getSelectedList() { return list; } }
나중에 쩌어~ 뒤에서 action 을 등록할 것입니다. 한꺼번에



Paste Action and Command
package kr.co.vicki.formwizard.actions; import kr.co.vicki.formwizard.model.commands.PasteElementCommand; import org.eclipse.gef.commands.Command; import org.eclipse.gef.ui.actions.SelectionAction; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.actions.ActionFactory; public class PasteElementAction extends SelectionAction { public PasteElementAction(IWorkbenchPart part) { super(part); setLazyEnablementCalculation(true); } @Override protected void init() { super.init(); ISharedImages sharedImages = PlatformUI.getWorkbench().getSharedImages(); setText("Paste"); setId(ActionFactory.PASTE.getId()); setHoverImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_PASTE)); setImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_PASTE)); setDisabledImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_PASTE_DISABLED)); setEnabled(true); } private Command createPasteCommand() { return new PasteElementCommand(); } @Override protected boolean calculateEnabled() { Command cmd = createPasteCommand(); return cmd != null && cmd.canExecute(); } @Override public void run() { Command cmd = createPasteCommand(); if (cmd != null && cmd.canExecute()) execute(cmd); } }
package kr.co.vicki.formwizard.model.commands; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import kr.co.vicki.formwizard.model.ElementBase; import kr.co.vicki.formwizard.model.SimpleElement; import org.eclipse.gef.commands.Command; import org.eclipse.gef.ui.actions.Clipboard; public class PasteElementCommand extends Command { private Map<ElementBase, ElementBase> datas = new HashMap<ElementBase, ElementBase>(); @Override public boolean canExecute() { List<ElementBase> list = (List<ElementBase>) Clipboard.getDefault().getContents(); if (list == null || list.isEmpty()) return false; for (Iterator<ElementBase> it=list.iterator(); it.hasNext(); ) { ElementBase element = it.next(); if (isPastableElement(element)) datas.put(element, null); } return true; } @Override public void execute() { if (!canExecute()) return; for (Iterator<ElementBase> it=datas.keySet().iterator(); it.hasNext(); ) { ElementBase element = it.next(); try { if (element instanceof SimpleElement) { SimpleElement elem = (SimpleElement) element; SimpleElement clone = (SimpleElement) elem.clone(); datas.put(element, clone); } } catch (CloneNotSupportedException e) { e.printStackTrace(); } } redo(); } @Override public void redo() { for (Iterator<ElementBase> it=datas.values().iterator(); it.hasNext(); ) { ElementBase element = it.next(); if (isPastableElement(element)) element.getParent().addChlid(element); } } @Override public boolean canUndo() { return !(datas.isEmpty()); } @Override public void undo() { for (Iterator<ElementBase> it=datas.keySet().iterator(); it.hasNext(); ) { ElementBase element = it.next(); if (isPastableElement(element)) element.getParent().removeChild(element); } } public boolean isPastableElement(ElementBase element) { if (element instanceof SimpleElement) return true; return false; } }
붙여넣기에 사용됩니다~



Cut Action and Command
예제에는 없었지만 그냥 한번 만들어 봤습니다. 현재는 부모가 되는 요소가 한개뿐이라 별 필요는 없지만

나중에라도 사용할 수 있게 만들어보았습니다. CopyElemntCommand 를 상속받았습니다. (귀찮아서...)
package kr.co.vicki.formwizard.actions; import java.util.Iterator; import java.util.List; import kr.co.vicki.formwizard.model.ElementBase; import kr.co.vicki.formwizard.model.commands.CutElementCommand; import org.eclipse.gef.EditPart; import org.eclipse.gef.commands.Command; import org.eclipse.gef.ui.actions.SelectionAction; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.actions.ActionFactory; public class CutElementAction extends SelectionAction { public CutElementAction(IWorkbenchPart part) { super(part); setLazyEnablementCalculation(true); } @Override protected void init() { super.init(); ISharedImages sharedImages = PlatformUI.getWorkbench().getSharedImages(); setText("Cut"); setId(ActionFactory.CUT.getId()); setHoverImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_CUT)); setImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_CUT)); setDisabledImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_CUT_DISABLED)); setEnabled(true); } private Command createCutCommand(List<Object> selectedObjects) { if (selectedObjects == null || selectedObjects.isEmpty()) return null; CutElementCommand cmd = new CutElementCommand(); for (Iterator<Object> it=selectedObjects.iterator(); it.hasNext(); ) { EditPart ep = (EditPart) it.next(); ElementBase element = (ElementBase) ep.getModel(); if (!cmd.isCopyableElement(element)) return null; cmd.addElement(element); } return cmd; } @Override protected boolean calculateEnabled() { Command cmd = createCutCommand(getSelectedObjects()); if (cmd == null) return false; return cmd.canExecute(); } @Override public void run() { Command cmd = createCutCommand(getSelectedObjects()); if (cmd != null && cmd.canExecute()) cmd.execute(); } }
package kr.co.vicki.formwizard.model.commands; import java.util.Iterator; import java.util.List; import kr.co.vicki.formwizard.model.ElementBase; import org.eclipse.gef.ui.actions.Clipboard; public class CutElementCommand extends CopyElementCommand { @Override public void execute() { if (!canExecute()) return; List<ElementBase> list = getSelectedList(); for (Iterator<ElementBase> it=list.iterator(); it.hasNext(); ) { ElementBase element = it.next(); if (isCopyableElement(element)) element.getParent().removeChild(element); } Clipboard.getDefault().setContents(list); } @Override public boolean canUndo() { return getSelectedList() != null && !getSelectedList().isEmpty(); } @Override public void undo() { List<ElementBase> list = getSelectedList(); for (Iterator<ElementBase> it=list.iterator(); it.hasNext(); ) { ElementBase element = it.next(); if (isCopyableElement(element)) element.getParent().addChlid(element); } } }


뭐 GEF 하시는 분들이 중급 이상의 자바실력을 가지고 있을거라 생각되기 때문에

다른 소스 설명은 하지 않겠습니다. (절대 귀찮아서가 아닙니다.)


이제 모든 재료들이 준비가 되었으니 적용하는 일만 남았습니다.

Actions 와 Commands 의 적용
public class FormWizardEditorActionBarContributor extends ActionBarContributor { @Override protected void buildActions() { ... IWorkbenchWindow iww = getPage().getWorkbenchWindow(); addRetargetAction((RetargetAction) ActionFactory.COPY.create(iww)); addRetargetAction((RetargetAction) ActionFactory.CUT.create(iww)); addRetargetAction((RetargetAction) ActionFactory.PASTE.create(iww)); } ... @Override public void contributeToToolBar(IToolBarManager toolBarManager) { ... toolBarManager.add(getAction(ActionFactory.COPY.getId())); toolBarManager.add(getAction(ActionFactory.CUT.getId())); toolBarManager.add(getAction(ActionFactory.PASTE.getId())); ... } ... }
에디터에 액션을 등록합니다.
public class FormWizardEditor extends GraphicalEditorWithFlyoutPalette { ... @Override protected void createActions() { super.createActions(); ActionRegistry registry = getActionRegistry(); IAction action = new CopyElementAction(this); registry.registerAction(action); getSelectionActions().add(action.getId()); action = new CutElementAction(this); registry.registerAction(action); getSelectionActions().add(action.getId()); action = new PasteElementAction(this); registry.registerAction(action); getSelectionActions().add(action.getId()); } ... class OutlinePage extends ContentOutlinePage { ... @Override public void createControl(Composite parent) { ... IActionBars bars = getSite().getActionBars(); ActionRegistry ar = getActionRegistry(); bars.setGlobalActionHandler(ActionFactory.COPY.getId(), ar.getAction(ActionFactory.COPY.getId())); bars.setGlobalActionHandler(ActionFactory.PASTE.getId(), ar.getAction(ActionFactory.PASTE.getId())); } ... } }
컨텍스트 메뉴에도 등록해줍니다.
public class FormWizardContextMenuProvider extends ContextMenuProvider { ... @Override public void buildContextMenu(IMenuManager menu) { ... action = getActionRegistry().getAction(ActionFactory.COPY.getId()); menu.appendToGroup(GEFActionConstants.GROUP_COPY, action); action = getActionRegistry().getAction(ActionFactory.CUT.getId()); menu.appendToGroup(GEFActionConstants.GROUP_COPY, action); action = getActionRegistry().getAction(ActionFactory.PASTE.getId()); menu.appendToGroup(GEFActionConstants.GROUP_COPY, action); } ... }
Ctrl + C, Ctrl + V 도 사용해야겠죠?? 처음에는 keyHandler 에 등록하려 애를 써봤지만 다른 방법이 있었습니다. (역시 삽질 ㅋㅋ)
public class ApplicationActionBarAdvisor extends ActionBarAdvisor { ... protected void makeActions(IWorkbenchWindow window) { register(ActionFactory.UNDO.create(window)); register(ActionFactory.REDO.create(window)); register(ActionFactory.COPY.create(window)); register(ActionFactory.CUT.create(window)); register(ActionFactory.PASTE.create(window)); } ... }


이래하면 복사/잘라내기/붙여넣기가 잘 됩니다 ㅋㅋㅋ 안되면... 코멘트 남겨주세요....

예전부터 계속 해보고 싶었던 GEF, EMF, GMF ... 때마침 회사 프로젝트가 GEF 를 이용한 결과물과

비슷한 스팩을 요구하는 작업이 있어서 시작하게 되었습니다. 예제 프로젝트를 4번 정도 따라하면서

나중에 인수인계를 고려하여 블로그에도 포스팅하는게 좋겠다 싶어서 시작했는데 많은 후회를 하였습니다.

설명 달기 귀찮아서 소스만 좌르르르~~ 다음번에 여유 있을 때는 좀 양질의 포스팅이 될 수 있도록

누군가가 주석 좀 달아주세요 ㅋㅋㅋㅋ

이상으로 GEF 무작정 따라하기를 마칩니다. 짝짝짝~

참고자료 이클립스 홈 - http://www.eclipse.org/ GEF 프로젝트 홈 - http://www.eclipse.org/gef/ 이클립스 플러그인 카페 - http://cafe.naver.com/eclipseplugin psykokwak 블로그 - http://www.psykokwak.com/blog/index.php/gef 민물곰탱이의 이클립스 개발 이야기 - http://esterel-dev.tistory.com/ 少年壮志无烟抽 - http://www.cnblogs.com/bjzhanghao/archive/2005/04/21/142558.html GEF examples