workspace-sharing-widget/src/main/java/org/gcube/portlets/widgets/workspacesharingwidget/client/WorkspaceSharingController.java

/**
 * 
 */
package org.gcube.portlets.widgets.workspacesharingwidget.client;

import org.gcube.portlets.widgets.workspacesharingwidget.client.rpc.WorkspaceSharingService;
import org.gcube.portlets.widgets.workspacesharingwidget.client.rpc.WorkspaceSharingServiceAsync;
import org.gcube.portlets.widgets.workspacesharingwidget.client.view.sharing.DialogShareWItem;
import org.gcube.portlets.widgets.workspacesharingwidget.shared.ACL_TYPE;
import org.gcube.portlets.widgets.workspacesharingwidget.shared.FileModel;

import com.extjs.gxt.ui.client.widget.MessageBox;
import com.extjs.gxt.ui.client.widget.Window;
import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.rpc.AsyncCallback;

/**
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 * @Feb 25, 2014
 * 
 */
public class WorkspaceSharingController {

	public static final WorkspaceSharingServiceAsync rpcWorkspaceSharingService = (WorkspaceSharingServiceAsync) GWT.create(WorkspaceSharingService.class);

	private static String myLogin;

	private String workspaceItemId;

	private boolean shareOnlyOwner;

	private ACL_TYPE defaultPermission;
	
	private DialogShareWItem sharingDialog = null;


//	/**
//	 * This dialog doesn't show setting permissions, it use default server permissions
//	 * @param workspace itemId to share
//	 */
//	public WorkspaceSharingController(String itemId) {
//	}
//	
	
	/**
	 * This dialog show setting permissions
	 * @param itemId workace item id
	 * @param shareOnlyOwner if true, only owner can share
	 * @param defaultPermission ACL_TYPE default permission
	 */
	public WorkspaceSharingController(String itemId, boolean shareOnlyOwner, ACL_TYPE defaultPermission) {
		this.workspaceItemId = itemId;
		this.shareOnlyOwner = shareOnlyOwner;
		this.defaultPermission = defaultPermission;
		
		
		if(workspaceItemId==null || workspaceItemId.isEmpty()){
			MessageBox.alert("Error", "Item id is null or empty", null);
			return;
		}
		
		initWindow();
		
		if(shareOnlyOwner){
			loadMyLogin(true, true);
		}else{
			loadFileModel(true);
		}
			
	}
	
	
	private void initWindow(){
		sharingDialog = new DialogShareWItem();
		sharingDialog.setSize(ConstantsSharing.WIDTH_DIALOG+20, ConstantsSharing.HEIGHT_DIALOG+20);
		sharingDialog.mask("Loading File from Workspace", ConstantsSharing.LOADINGSTYLE);
	}
	
	
	private void loadFileModel(final boolean showSharingDialog){
		
		rpcWorkspaceSharingService.getFileModelByWorkpaceItemId(workspaceItemId, new AsyncCallback<FileModel>() {

			@Override
			public void onFailure(Throwable caught) {
				sharingDialog.unmask();
				MessageBox.alert("Error", caught.getMessage(), null);
			}

			@Override
			public void onSuccess(FileModel result) {
				sharingDialog.unmask();
				sharingDialog.mask("File loaded", ConstantsSharing.LOADINGSTYLE);
				
				if(showSharingDialog)
					updateSharingDialog(result);
			}
		});
	}
	
	/**
	 * 
	 * @param fileModel
	 */
	private void updateSharingDialog(FileModel fileModel){
		sharingDialog.unmask();
		sharingDialog.updateSharingDialog(fileModel, shareOnlyOwner, defaultPermission);
//		dialogShareItem.show();
		
		sharingDialog.layout();
	}
	
	/**
	 * 
	 * @param loadFileModel
	 * @param showSharingDialog
	 */
	private void loadMyLogin(final boolean loadFileModel, final boolean showSharingDialog) {

		rpcWorkspaceSharingService.getMyLogin(new AsyncCallback<String>() {

			@Override
			public void onFailure(Throwable caught) {
				GWT.log("Error on loading my login is empty");
				myLogin = "";

			}

			@Override
			public void onSuccess(String result) {
				GWT.log("My login is: " + result);
				myLogin = result;
				
				if(loadFileModel)
					loadFileModel(showSharingDialog);
			}
		});
	}

	public static String getMyLogin() {
		return myLogin;
	}

	public String getWorkspaceItemId() {
		return workspaceItemId;
	}


	public boolean isShareOnlyOwner() {
		return shareOnlyOwner;
	}

	
	public ACL_TYPE getDefaultPermission() {
		return defaultPermission;
	}


	/**
	 * 
	 * @return
	 */
	public Window getSharingDialog() {
		return sharingDialog;
	}

}