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package org.eclipse.emf.parsley.edit.action;
import java.util.ArrayList;
import java.util.Collection;
import org.eclipse.emf.edit.command.CommandParameter;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.ui.action.CreateChildAction;
import org.eclipse.emf.edit.ui.action.CreateSiblingAction;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IContributionItem;
import org.eclipse.jface.action.IContributionManager;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.SubContributionItem;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.graphics.Image;
import com.google.inject.Inject;
public class EmfActionManager {
protected Collection<IAction> createSiblingActions;
protected IMenuManager createChildMenuManager;
protected IMenuManager createSiblingMenuManager;
protected Collection<IAction> createChildActions;
@Inject
protected ILabelProvider iLabelProvider;
private void generateCreateChildActions(EditingDomain domain,
Collection<?> descriptors, ISelection selection) {
Collection<IAction> actions = new ArrayList<IAction>();
if (descriptors != null) {
for (Object descriptor : descriptors) {
CreateChildAction act = new CreateChildAction(domain,
selection, descriptor);
Object imageObj = iLabelProvider
.getImage(((CommandParameter) descriptor).getValue());
act.setImageDescriptor(ImageDescriptor
.createFromImage((Image) imageObj));
actions.add(act);
}
}
createChildActions = actions;
}
private void generateCreateSiblingActions(EditingDomain domain,
Collection<?> descriptors, ISelection selection) {
Collection<IAction> actions = new ArrayList<IAction>();
if (descriptors != null) {
for (Object descriptor : descriptors) {
CreateSiblingAction act = new CreateSiblingAction(domain,
selection, descriptor);
Object imageObj = iLabelProvider
.getImage(((CommandParameter) descriptor).getValue());
act.setImageDescriptor(ImageDescriptor
.createFromImage((Image) imageObj));
actions.add(act);
}
}
createSiblingActions = actions;
}
public void depopulateChildManager(IMenuManager menuManager) {
depopulateManager(menuManager, createChildActions);
}
public void depopulateSibilingManager(IMenuManager menuManager) {
depopulateManager(menuManager, createSiblingActions);
}
public Collection<IAction> getCreateSiblingActions() {
return createSiblingActions;
}
public Collection<IAction> getCreateChildActions() {
return createChildActions;
}
public void menuAboutToShow(IMenuManager menuManager) {
MenuManager submenuManager = null;
submenuManager = new MenuManager("&New Child");
populateManager(submenuManager, createChildActions, null);
menuManager.insertBefore("edit", submenuManager);
submenuManager = new MenuManager("N&ew Sibling");
populateManager(submenuManager, createSiblingActions, null);
menuManager.insertBefore("edit", submenuManager);
}
public void populateChildMenuManager(IMenuManager menuManager) {
populateManager(menuManager, createChildActions, null);
}
public void populateSibilingMenuManager(IMenuManager menuManager) {
populateManager(menuManager, createSiblingActions, null);
}
public void contributeToMenu(IMenuManager submenuManager) {
createChildMenuManager = new MenuManager("&New Child");
submenuManager.insertBefore("additions", createChildMenuManager);
createSiblingMenuManager = new MenuManager("N&ew Sibling");
submenuManager.insertBefore("additions", createSiblingMenuManager);
}
public void updateSelection(ISelection selection, EditingDomain domain) {
depopulateChildManager(createChildMenuManager);
depopulateSibilingManager(createSiblingMenuManager);
Collection<?> newChildDescriptors = null;
Collection<?> newSiblingDescriptors = null;
if (selection instanceof IStructuredSelection
&& ((IStructuredSelection) selection).size() == 1) {
Object object = ((IStructuredSelection) selection)
.getFirstElement();
newChildDescriptors = domain.getNewChildDescriptors(object, null);
newSiblingDescriptors = domain.getNewChildDescriptors(null, object);
}
generateCreateChildActions(domain, newChildDescriptors, selection);
generateCreateSiblingActions(domain, newSiblingDescriptors, selection);
if (createChildMenuManager != null) {
populateChildMenuManager(createChildMenuManager);
createChildMenuManager.update(true);
}
if (createSiblingMenuManager != null) {
populateSibilingMenuManager(createSiblingMenuManager);
createSiblingMenuManager.update(true);
}
}
protected void depopulateManager(IContributionManager manager,
Collection<? extends IAction> actions) {
if (manager != null && actions != null) {
IContributionItem[] items = manager.getItems();
for (int i = 0; i < items.length; i++) {
// Look into SubContributionItems
//
IContributionItem contributionItem = items[i];
while (contributionItem instanceof SubContributionItem) {
contributionItem = ((SubContributionItem) contributionItem)
.getInnerItem();
}
// Delete the ActionContributionItems with matching action.
//
if (contributionItem instanceof ActionContributionItem) {
IAction action = ((ActionContributionItem) contributionItem)
.getAction();
if (actions.contains(action)) {
manager.remove(contributionItem);
}
}
}
}
}
protected void populateManager(IContributionManager manager,
Collection<? extends IAction> actions, String contributionID) {
if (actions != null) {
for (IAction action : actions) {
if (contributionID != null) {
manager.insertBefore(contributionID, action);
} else {
manager.add(action);
}
}
}
}
}
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