Synnefo » Pithos

/*

 * Copyright 2007, 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.client;

import gr.ebs.gss.client.components.TristateCheckBox;

import gr.ebs.gss.client.rest.MultiplePostCommand;

import gr.ebs.gss.client.rest.RestException;

import gr.ebs.gss.client.rest.resource.FileResource;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

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.event.dom.client.FocusEvent;

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

import com.google.gwt.json.client.JSONArray;

import com.google.gwt.json.client.JSONBoolean;

import com.google.gwt.json.client.JSONObject;

import com.google.gwt.json.client.JSONString;

import com.google.gwt.user.client.Command;

import com.google.gwt.user.client.DeferredCommand;

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

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

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

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

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

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

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

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

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

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

/**

 * The 'Multiple file properties' dialog box implementation.

 *

 * @author droutsis

 */

public class FilesPropertiesDialog extends AbstractPropertiesDialog {

        private final TristateCheckBox versionedCheck;

        private final List<FileResource> files;

        private Boolean initialVersioned;

        /**

         * The widget's constructor.

         *

         * @param _files

         */

        public FilesPropertiesDialog(final List<FileResource> _files) {

                super();

                files = _files;

                int versionedNum = 0;

                for (FileResource fr : files)

                        if (fr.isVersioned()) versionedNum++;

                Boolean versioned = null;

                if (versionedNum==0) versioned = false;

                if (versionedNum==files.size()) versioned = true;

                initialVersioned = versioned;

                versionedCheck = new TristateCheckBox(versioned);

                // Set the dialog's caption.

                setText("Files properties");

                // Outer contains inner and buttons.

                final VerticalPanel outer = new VerticalPanel();

                final FocusPanel focusPanel = new FocusPanel(outer);

                // Inner contains generalPanel and permPanel.

                inner = new DecoratedTabPanel();

                inner.setAnimationEnabled(true);

                final VerticalPanel generalPanel = new VerticalPanel();

                final HorizontalPanel buttons = new HorizontalPanel();

                final VerticalPanel verPanel = new VerticalPanel();

                final HorizontalPanel vPanel = new HorizontalPanel();

                inner.add(generalPanel, "General");

                inner.add(verPanel, "Versions");

                inner.selectTab(0);

                final FlexTable generalTable = new FlexTable();

                generalTable.setText(0, 0, String.valueOf(files.size())+" files selected");

                generalTable.setText(1, 0, "Folder");

                generalTable.setText(2, 0, "Tags");

                FileResource firstFile = files.get(0);

                if(firstFile.getFolderName() != null)

                        generalTable.setText(1, 1, firstFile.getFolderName());

                else

                        generalTable.setText(1, 1, "-");

                // Find if tags are identical

                List<String> tagsList = files.get(0).getTags();

                List<String> tagss;

                for (int i=1; i<files.size(); i++) {

                        tagss = files.get(i).getTags();

                        if (tagsList.size() != tagss.size() || !tagsList.containsAll(tagss)) {

                                tagsList = null;

                                break;

                        }

                }

                // Get the tags.

                StringBuffer tagsBuffer = new StringBuffer();

                if (tagsList==null)

                        tagsBuffer.append(MULTIPLE_VALUES_TEXT);

                else {

                        Iterator i = tagsList.iterator();

                        while (i.hasNext()) {

                                String tag = (String) i.next();

                                tagsBuffer.append(tag).append(", ");

                        }

                        if (tagsBuffer.length() > 1)

                                tagsBuffer.delete(tagsBuffer.length() - 2, tagsBuffer.length() - 1);

                }

                initialTagText = tagsBuffer.toString();

                tags.setText(initialTagText);

                tags.addFocusHandler(new FocusHandler() {

                        @Override

                        public void onFocus(FocusEvent event) {

                                if (MULTIPLE_VALUES_TEXT.equals(tags.getText()))

                                        tags.setText("");

                        }

                }

                );

                generalTable.setWidget(2, 1, tags);

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

                generalTable.getFlexCellFormatter().setColSpan(0, 0, 2);

                generalTable.getFlexCellFormatter().setStyleName(1, 0, "props-labels");

                generalTable.getFlexCellFormatter().setStyleName(2, 0, "props-labels");

                generalTable.getFlexCellFormatter().setStyleName(0, 1, "props-values");

                generalTable.getFlexCellFormatter().setStyleName(1, 1, "props-values");

                generalTable.getFlexCellFormatter().setStyleName(2, 1, "props-values");

                generalTable.setCellSpacing(4);

                // Create the 'OK' button, along with a listener that hides the dialog

                // when the button is clicked.

                final Button ok = new Button("OK", new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                accept();

                                closeDialog();

                        }

                });

                buttons.add(ok);

                buttons.setCellHorizontalAlignment(ok, HasHorizontalAlignment.ALIGN_CENTER);

                // Create the 'Cancel' button, along with a listener that hides the

                // dialog when the button is clicked.

                final Button cancel = new Button("Cancel", new ClickHandler() {

                        @Override

                        public void onClick(ClickEvent event) {

                                closeDialog();

                        }

                });

                buttons.add(cancel);

                buttons.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);

                buttons.setSpacing(8);

                buttons.addStyleName("gss-TabPanelBottom");

                generalPanel.add(generalTable);

                // Asynchronously retrieve the tags defined by this user.

                DeferredCommand.addCommand(new Command() {

                        @Override

                        public void execute() {

                                updateTags();

                        }

                });

                DisclosurePanel allTags = new DisclosurePanel("All tags");

                allTagsContent = new FlowPanel();

                allTags.setContent(allTagsContent);

                generalPanel.add(allTags);

                generalPanel.setSpacing(4);

                vPanel.setCellHorizontalAlignment(cancel, HasHorizontalAlignment.ALIGN_CENTER);

                vPanel.setSpacing(8);

                vPanel.addStyleName("gss-TabPanelBottom");

                vPanel.add(new Label("Versioned"));

                vPanel.add(versionedCheck);

                verPanel.add(vPanel);

                outer.add(inner);

                outer.add(buttons);

                outer.setCellHorizontalAlignment(buttons, HasHorizontalAlignment.ALIGN_CENTER);

                outer.addStyleName("gss-TabPanelBottom");

                focusPanel.setFocus(true);

                setWidget(outer);

        }

        /**

         * Accepts any change and updates the file

         *

         */

        @Override

        protected void accept() {

                JSONObject json = new JSONObject();

                if ( versionedCheck.getState()!=null && !versionedCheck.getState().equals(initialVersioned) )

                                json.put("versioned", JSONBoolean.getInstance(versionedCheck.getState()));

                JSONArray taga = new JSONArray();

                int i = 0;

                String tagText = tags.getText();

                if (!MULTIPLE_VALUES_TEXT.equals(tagText) && !initialTagText.equals(tagText)) {

                        String[] tagset = tagText.split(",");

                        for (String t : tagset) {

                                JSONString to = new JSONString(t);

                                taga.set(i, to);

                                i++;

                        }

                        json.put("tags", taga);

                }

                String jsonString = json.toString();

                if(jsonString.equals("{}")){

                        GWT.log("NO CHANGES", null);

                        return;

                }

                final List<String> fileIds = new ArrayList<String>();

                for(FileResource f : files)

                        fileIds.add(f.getUri()+"?update=");

                MultiplePostCommand rt = new MultiplePostCommand(fileIds.toArray(new String[0]), jsonString, 200){

                        @Override

                        public void onComplete() {

                                GSS.get().getFileList().updateFileCache(true, false /* do not clear selected file*/);

                        }

                        @Override

                        public void onError(String p, Throwable t) {

                                GWT.log("", t);

                                if(t instanceof RestException){

                                        int statusCode = ((RestException)t).getHttpStatusCode();

                                        if(statusCode == 405)

                                                GSS.get().displayError("You don't have the necessary permissions");

                                        else if(statusCode == 404)

                                                GSS.get().displayError("File does not exist");

                                        else if(statusCode == 409)

                                                GSS.get().displayError("A file with the same name already exists");

                                        else if(statusCode == 413)

                                                GSS.get().displayError("Your quota has been exceeded");

                                        else

                                                GSS.get().displayError("Unable to modify file::"+((RestException)t).getHttpStatusText());

                                }

                                else

                                        GSS.get().displayError("System error modifying file:"+t.getMessage());

                        }

                };

                DeferredCommand.addCommand(rt);

        }

}