James Moger
2012-10-19 97a71565f6ff5d9722788559ce638863a9e618ab
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/*
 * Copyright 2012 gitblit.com.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.gitblit.wicket.panels;
 
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
 
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior;
import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.DropDownChoice;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.IChoiceRenderer;
import org.apache.wicket.markup.repeater.Item;
import org.apache.wicket.markup.repeater.OddEvenItem;
import org.apache.wicket.markup.repeater.RefreshingView;
import org.apache.wicket.markup.repeater.util.ModelIteratorAdapter;
import org.apache.wicket.model.CompoundPropertyModel;
import org.apache.wicket.model.IModel;
 
import com.gitblit.Constants.AccessPermission;
import com.gitblit.GitBlit;
import com.gitblit.models.TeamAccessPermission;
import com.gitblit.utils.DeepCopier;
 
/**
 * Allows user to manipulate user access permissions.
 * 
 * @author James Moger
 *
 */
public class TeamPermissionsPanel extends BasePanel {
 
    private static final long serialVersionUID = 1L;
 
    public TeamPermissionsPanel(String wicketId, final List<TeamAccessPermission> permissions, final Map<AccessPermission, String> translations) {
        super(wicketId);
        
        // update existing permissions repeater
        RefreshingView<TeamAccessPermission> dataView = new RefreshingView<TeamAccessPermission>("permissionRow") {
            private static final long serialVersionUID = 1L;
        
            @Override
            protected Iterator<IModel<TeamAccessPermission>> getItemModels() {
                // the iterator returns RepositoryPermission objects, but we need it to
                // return models
                return new ModelIteratorAdapter<TeamAccessPermission>(permissions.iterator()) {
                    @Override
                    protected IModel<TeamAccessPermission> model(TeamAccessPermission permission) {
                        return new CompoundPropertyModel<TeamAccessPermission>(permission);
                    }
                };
            }
 
            @Override
            protected Item<TeamAccessPermission> newItem(String id, int index, IModel<TeamAccessPermission> model) {
                // this item sets markup class attribute to either 'odd' or
                // 'even' for decoration
                return new OddEvenItem<TeamAccessPermission>(id, index, model);
            }
            
            public void populateItem(final Item<TeamAccessPermission> item) {
                final TeamAccessPermission entry = item.getModelObject();
                item.add(new Label("team", entry.team));
 
                // use ajax to get immediate update of permission level change
                // otherwise we can lose it if they change levels and then add
                // a new repository permission
                final DropDownChoice<AccessPermission> permissionChoice = new DropDownChoice<AccessPermission>(
                        "permission", Arrays.asList(AccessPermission.values()), new AccessPermissionRenderer(translations));
                permissionChoice.add(new AjaxFormComponentUpdatingBehavior("onchange") {
                   
                    private static final long serialVersionUID = 1L;
 
                    protected void onUpdate(AjaxRequestTarget target) {
                        target.addComponent(permissionChoice);
                    }
                });
 
                item.add(permissionChoice);
            }
        };
        add(dataView);
        setOutputMarkupId(true);
 
        // filter out teams we already have permissions for
        final List<String> teams = GitBlit.self().getAllTeamnames();
        for (TeamAccessPermission tp : permissions) {
            teams.remove(tp.team);
        }
 
        // add new permission form
        IModel<TeamAccessPermission> addPermissionModel = new CompoundPropertyModel<TeamAccessPermission>(new TeamAccessPermission());
        Form<TeamAccessPermission> addPermissionForm = new Form<TeamAccessPermission>("addPermissionForm", addPermissionModel);
        addPermissionForm.add(new DropDownChoice<String>("team", teams));
        addPermissionForm.add(new DropDownChoice<AccessPermission>("permission", Arrays
                .asList(AccessPermission.NEWPERMISSIONS), new AccessPermissionRenderer(translations)));
        AjaxButton button = new AjaxButton("addPermissionButton", addPermissionForm) {
 
            private static final long serialVersionUID = 1L;
 
            @Override
            protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
                // add permission to our list
                TeamAccessPermission tp = (TeamAccessPermission) form.getModel().getObject();
                permissions.add(DeepCopier.copy(tp));
                
                // remove team from available choices
                teams.remove(tp.team);
                
                // force the panel to refresh
                target.addComponent(TeamPermissionsPanel.this);
            }
        };
        addPermissionForm.add(button);
        
        // only show add permission form if we have a team choice
        add(addPermissionForm.setVisible(teams.size() > 0));
    }
    
    private class AccessPermissionRenderer implements IChoiceRenderer<AccessPermission> {
 
        private static final long serialVersionUID = 1L;
 
        private final Map<AccessPermission, String> map;
 
        public AccessPermissionRenderer(Map<AccessPermission, String> map) {
            this.map = map;
        }
 
        @Override
        public String getDisplayValue(AccessPermission type) {
            return map.get(type);
        }
 
        @Override
        public String getIdValue(AccessPermission type, int index) {
            return Integer.toString(index);
        }
    }
}