Synnefo » Pithos

/*

 * Copyright 2008, 2009 Electronic Business Systems Ltd.

 *

 * This file is part of GSS.

 *

 * GSS is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * GSS is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.

 */

package gr.ebs.gss.admin.client.ui;

import gr.ebs.gss.admin.client.TwoAdmin;

import gr.ebs.gss.server.domain.dto.PermissionDTO;

import java.util.HashSet;

import java.util.Set;

import com.google.gwt.core.client.GWT;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.http.client.URL;

import com.google.gwt.user.client.rpc.AsyncCallback;

import com.google.gwt.user.client.ui.Button;

import com.google.gwt.user.client.ui.CheckBox;

import com.google.gwt.user.client.ui.Composite;

import com.google.gwt.user.client.ui.FlexTable;

import com.google.gwt.user.client.ui.HTML;

import com.google.gwt.user.client.ui.HasHorizontalAlignment;

import com.google.gwt.user.client.ui.VerticalPanel;

/**

 * @author kman

 *

 */

public class PermissionsList extends Composite {

        int selectedRow = -1;

        int permissionCount=-1;

        Set<PermissionDTO> permissions = null;

        final VerticalPanel permPanel = new VerticalPanel();

        final FlexTable permTable = new FlexTable();

        final String owner;

        PermissionDTO toRemove = null;

        private boolean hasChanges = false;

        private boolean hasAddition = false;

        private boolean allowEditPermissions = false;

        private String uri;

        public PermissionsList(Set<PermissionDTO> thePermissions, String anOwner, boolean _allowEditPermissions){

                owner = anOwner;

                permissions =  new HashSet<PermissionDTO>();

                permissions.addAll(thePermissions);

                permTable.setText(0, 0, "Users/Groups");

                permTable.setText(0, 1, "Read");

                permTable.setText(0, 2, "Write");

                permTable.setText(0, 3, "Modify Access");

                permTable.setText(0, 4, "");

                permTable.getFlexCellFormatter().setStyleName(0, 0, "props-toplabels");

                permTable.getFlexCellFormatter().setStyleName(0, 1, "props-toplabels");

                permTable.getFlexCellFormatter().setStyleName(0, 2, "props-toplabels");

                permTable.getFlexCellFormatter().setStyleName(0, 3, "props-toplabels");

                permPanel.add(permTable);

                Button savePermissions = new Button("Save");

                permPanel.add(savePermissions);

                savePermissions.addClickHandler(new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                updatePermissionsAccordingToInput();

                                if(hasChanges())

                                        TwoAdmin.get().getAdminService().setFilePermissions(uri,permissions, new AsyncCallback<Void>() {

                                                @Override

                                                public void onSuccess(Void result) {

                                                }

                                                @Override

                                                public void onFailure(Throwable caught) {

                                                        GWT.log("Error fetching file", caught);

                                                        TwoAdmin.get().showErrorBox("Unable to Find File");

                                                }

                                        });

                        }

                });

                permPanel.addStyleName("gss-TabPanelBottom");

                allowEditPermissions = _allowEditPermissions;

                initWidget(permPanel);

                updateTable();

        }

        public boolean hasChanges(){

                return hasChanges || hasAddition;

        }

        public void clear(){

                permissions= new HashSet<PermissionDTO>();

                uri=null;

                updateTable();

        }

        public void update(Set<PermissionDTO> per, String aUri){

                permissions=per;

                uri=aUri;

                updateTable();

        }

        public void updateTable(){

                int i=1;

                if(toRemove != null){

                        permissions.remove(toRemove);

                        toRemove = null;

                }

                for(final PermissionDTO dto : permissions){

                        Button removeButton = new Button("remove", new ClickHandler() {

                                @Override

                                public void onClick(ClickEvent event) {

                                        toRemove = dto;

                                        updateTable();

                                        hasChanges = true;

                                }

                        });

                        if(dto.getUser() !=null)

                                if(dto.getUser()!=null && dto.getUser().getUsername().equals(owner)){

                                        permTable.setHTML(i, 0, "<span>"  + "&nbsp;Owner</span>");

                                        removeButton.setVisible(false);

                                }

                                else{

                                        HTML userLabel = new HTML("<a href='#'>"+dto.getUser().getUsername()+"</a></span>");

                                        permTable.setWidget(i, 0, userLabel);

                                        userLabel.addClickHandler(new ClickHandler() {

                                                @Override

                                                public void onClick(ClickEvent event) {

                                                        TwoAdmin.get().searchUsers("username:"+dto.getUser().getUsername());

                                                }

                                        });

                                }

                        else if(dto.getGroup() != null) {

                                //String user = GSS.get().getCurrentUserResource().getUsername();

                                String[] names = dto.getGroup().getName().split("/");

                                String name = URL.decodeComponent(names[names.length - 1]);

                                //String ownr = names.length>1 ? URL.decodeComponent(names[names.length - 3]) : user;

                                String groupName =  name;

                                permTable.setHTML(i, 0, "<span>" +  "&nbsp;"+groupName+"</span>");

                        }

                        CheckBox read = new CheckBox();

                        read.setValue(dto.getRead());

                        CheckBox write = new CheckBox();

                        write.setValue(dto.getWrite());

                        CheckBox modify = new CheckBox();

                        modify.setValue(dto.getModifyACL());

                        permTable.setWidget(i, 1, read);

                        permTable.setWidget(i, 2, write);

                        permTable.setWidget(i, 3, modify);

                        if (dto.getUser()!=null && dto.getUser().getUsername().equals(owner) || !allowEditPermissions) {

                                read.setEnabled(false);

                                write.setEnabled(false);

                                modify.setEnabled(false);

                        }

                        else

                                permTable.setWidget(i, 4, removeButton);

                        permTable.getFlexCellFormatter().setStyleName(i, 0, "props-labels");

                        permTable.getFlexCellFormatter().setHorizontalAlignment(i, 1, HasHorizontalAlignment.ALIGN_CENTER);

                        permTable.getFlexCellFormatter().setHorizontalAlignment(i, 2, HasHorizontalAlignment.ALIGN_CENTER);

                        permTable.getFlexCellFormatter().setHorizontalAlignment(i, 3, HasHorizontalAlignment.ALIGN_CENTER);

                        i++;

                }

                for(; i<permTable.getRowCount(); i++)

                        permTable.removeRow(i);

                hasChanges = false;

        }

        public void updatePermissionsAccordingToInput(){

                int i=1;

                for(PermissionDTO dto : permissions){

                        /*if(dto.getId() == null)

                                hasChanges =true;*/

                        CheckBox r = (CheckBox) permTable.getWidget(i, 1);

                        CheckBox w = (CheckBox) permTable.getWidget(i, 2);

                        CheckBox m = (CheckBox) permTable.getWidget(i, 3);

                        if(dto.getRead() != r.getValue() || dto.getWrite() != w.getValue() || dto.getModifyACL() != m.getValue())

                                hasChanges = true;

                        dto.setRead(r.getValue());

                        dto.setWrite(w.getValue());

                        dto.setModifyACL(m.getValue());

                        i++;

                }

        }

        /**

         * Retrieve the permissions.

         *

         * @return the permissions

         */

        public Set<PermissionDTO> getPermissions() {

                return permissions;

        }

        public void addPermission(PermissionDTO permission){

                permissions.add(permission);

                hasAddition = true;

        }

}