org.drools.brms.client.ruleeditor.VersionViewer.java Source code

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Here is the source code for org.drools.brms.client.ruleeditor.VersionViewer.java

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package org.drools.brms.client.ruleeditor;
/*
 * Copyright 2005 JBoss Inc
 * 
 * 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.
 */

import org.drools.brms.client.common.GenericCallback;
import org.drools.brms.client.common.LoadingPopup;
import org.drools.brms.client.rpc.MetaData;
import org.drools.brms.client.rpc.RepositoryServiceFactory;
import org.drools.brms.client.rpc.RuleAsset;

import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter;

/**
 * This shows a historical read only view of an asset, as a popup.
 * Why a popup? well, people can drag it around how they want.
 * 
 * @author Michael Neale
 */
public class VersionViewer extends DialogBox {

    private String versionUUID;
    private String headUUID;
    private Command refresh;

    public VersionViewer(final MetaData head, String versionUUID, String headUUID, Command refresh) {
        super(false);

        this.versionUUID = versionUUID;
        this.headUUID = headUUID;
        this.refresh = refresh;

        setStyleName("version-Popup");

        LoadingPopup.showMessage("Loading version");

        RepositoryServiceFactory.getService().loadRuleAsset(versionUUID, new GenericCallback() {

            public void onSuccess(Object data) {

                RuleAsset asset = (RuleAsset) data;
                asset.isreadonly = true;
                asset.metaData.name = head.name;
                setText("Version number [" + asset.metaData.versionNumber + "] of [" + asset.metaData.name + "]");

                FlexTable layout = new FlexTable();
                FlexCellFormatter formatter = layout.getFlexCellFormatter();

                Button restore = new Button("Restore this version");
                restore.addClickListener(new ClickListener() {
                    public void onClick(Widget w) {
                        restore(w);
                    }

                });
                layout.setWidget(0, 0, restore);
                formatter.setHorizontalAlignment(0, 0, HasHorizontalAlignment.ALIGN_LEFT);

                Button close = new Button("Close");
                close.addClickListener(new ClickListener() {
                    public void onClick(Widget w) {
                        hide();
                    }
                });

                layout.setWidget(0, 1, close);

                formatter.setHorizontalAlignment(0, 1, HasHorizontalAlignment.ALIGN_RIGHT);

                RuleViewer viewer = new RuleViewer(asset, true);

                viewer.setWidth("100%");
                layout.setWidget(1, 0, viewer);
                formatter.setColSpan(1, 1, 2);
                layout.setWidth("100%");
                layout.setPixelSize(800, 300);
                setWidget(layout);
            }
        });
    }

    private void restore(Widget w) {

        final CheckinPopup pop = new CheckinPopup(w.getAbsoluteLeft() + 10, w.getAbsoluteTop() + 10,
                "Restore this version?");
        pop.setCommand(new Command() {
            public void execute() {
                RepositoryServiceFactory.getService().restoreVersion(versionUUID, headUUID, pop.getCheckinComment(),
                        new GenericCallback() {
                            public void onSuccess(Object data) {
                                hide();
                                refresh.execute();
                            }
                        });
            }
        });
        pop.show();
    }

}