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.commands.CopyCommand;

import gr.ebs.gss.client.commands.CutCommand;

import gr.ebs.gss.client.commands.DeleteCommand;

import gr.ebs.gss.client.commands.PasteCommand;

import gr.ebs.gss.client.commands.PropertiesCommand;

import gr.ebs.gss.client.commands.RefreshCommand;

import gr.ebs.gss.client.commands.RestoreTrashCommand;

import gr.ebs.gss.client.commands.ToTrashCommand;

import gr.ebs.gss.client.commands.UploadFileCommand;

import gr.ebs.gss.client.dnd.DnDTreeItem;

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

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

import java.util.List;

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

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

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

import com.google.gwt.resources.client.ClientBundle;

import com.google.gwt.resources.client.ImageResource;

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

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

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

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

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

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

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

/**

 * The 'File Context' menu implementation.

 */

public class FileContextMenu extends PopupPanel implements ClickHandler {

        /**

         * The widget's images.

         */

        private final Images images;

        private MenuItem cutItem;

        private MenuItem copyItem;

        private MenuItem pasteItem;

        private MenuItem updateItem;

        private MenuItem sharingItem;

        private MenuItem propItem;

        private MenuItem trashItem;

        private MenuItem deleteItem;

        private MenuItem downloadItem;

        private MenuItem saveAsItem;

        /**

         * The image bundle for this widget's images that reuses images defined in

         * other menus.

         */

        public interface Images extends ClientBundle,FileMenu.Images, EditMenu.Images {

                @Source("gr/ebs/gss/resources/mimetypes/document.png")

                ImageResource fileContextMenu();

                @Source("gr/ebs/gss/resources/doc_versions.png")

                ImageResource versions();

                @Override

                @Source("gr/ebs/gss/resources/group.png")

                ImageResource sharing();

                @Override

                @Source("gr/ebs/gss/resources/border_remove.png")

                ImageResource unselectAll();

                @Source("gr/ebs/gss/resources/demo.png")

                ImageResource viewImage();

}

        public static native String getDate()/*-{

                return (new Date()).toUTCString();

        }-*/;

        /**

         * The widget's constructor.

         *

         * @param newImages the image bundle passed on by the parent object

         */

        public FileContextMenu(Images newImages, boolean isTrash, boolean isEmpty) {

                // The popup's constructor's argument is a boolean specifying that it

                // auto-close itself when the user clicks outside of it.

                super(true);

                GSS gss = GSS.get();

                setAnimationEnabled(true);

                images = newImages;

                // The command that does some validation before downloading a file.

                Command downloadCmd = new Command() {

                        @Override

                        public void execute() {

                                hide();

                                GSS.get().getTopPanel().getFileMenu().preDownloadCheck();

                        }

                };

                pasteItem = new MenuItem("<span>" + AbstractImagePrototype.create(newImages.paste()).getHTML() + "&nbsp;Paste</span>", true, new PasteCommand(this));

                MenuBar contextMenu = new MenuBar(true);

                if (isEmpty) {

                        contextMenu.addItem(pasteItem);

                        if (GSS.get().getFolders().getCurrent() != null)

                                if (GSS.get().getFolders().isFileItem(GSS.get().getFolders().getCurrent()))

                                        contextMenu.addItem("<span>" + AbstractImagePrototype.create(newImages.fileUpdate()).getHTML() + "&nbsp;Upload</span>", true, new UploadFileCommand(this));

                                else if (GSS.get().getFolders().isMySharedItem(GSS.get().getFolders().getCurrent()) || GSS        .get()

                                                                                                                                                                                                                        .getFolders()

                                                                                                                                                                                                                        .isOthersSharedItem(GSS        .get()

                                                                                                                                                                                                                                                                        .getFolders()

                                                                                                                                                                                                                                                                        .getCurrent()))

                                        if(GSS.get().getFolders().getCurrent().getUserObject() instanceof FolderResource)

                                                contextMenu.addItem("<span>" + AbstractImagePrototype.create(newImages.fileUpdate()).getHTML() + "&nbsp;Upload</span>", true, new UploadFileCommand(this));

                        contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.refresh()).getHTML() + "&nbsp;Refresh</span>", true, new RefreshCommand(this, images));

                } else if (isTrash) {

                        contextMenu.addItem("<span>" + AbstractImagePrototype.create(newImages.versions()).getHTML() + "&nbsp;Restore</span>", true, new RestoreTrashCommand(this));

                        contextMenu.addItem("<span>" + AbstractImagePrototype.create(newImages.delete()).getHTML() + "&nbsp;Delete</span>", true, new DeleteCommand(this, images));

                } else {

                        final Command unselectAllCommand = new Command() {

                                @Override

                                public void execute() {

                                        hide();

                                        if(GSS.get().isFileListShowing())

                                                GSS.get().getFileList().clearSelectedRows();

                                        else if(GSS.get().isSearchResultsShowing())

                                                GSS.get().getSearchResults().clearSelectedRows();

                                }

                        };

                        cutItem = new MenuItem("<span>" + AbstractImagePrototype.create(newImages.cut()).getHTML() + "&nbsp;Cut</span>", true, new CutCommand(this));

                        copyItem = new MenuItem("<span>" + AbstractImagePrototype.create(newImages.copy()).getHTML() + "&nbsp;Copy</span>", true, new CopyCommand(this));

                        updateItem = new MenuItem("<span>" + AbstractImagePrototype.create(newImages.fileUpdate()).getHTML() + "&nbsp;Upload</span>", true, new UploadFileCommand(this));

                        trashItem = new MenuItem("<span>" + AbstractImagePrototype.create(newImages.emptyTrash()).getHTML() + "&nbsp;Move to Trash</span>", true, new ToTrashCommand(this));

                        deleteItem = new MenuItem("<span>" + AbstractImagePrototype.create(newImages.delete()).getHTML() + "&nbsp;Delete</span>", true, new DeleteCommand(this, images));

                        sharingItem = new MenuItem("<span>" + AbstractImagePrototype.create(newImages.sharing()).getHTML() + "&nbsp;Sharing</span>", true, new PropertiesCommand(this, images, 1));

                        propItem = new MenuItem("<span>" + AbstractImagePrototype.create(newImages.viewText()).getHTML() + "&nbsp;Properties</span>", true, new PropertiesCommand(this, images, 0));

                        TreeItem currentFolder = gss.getFolders().getCurrent();

                        if(currentFolder!=null && currentFolder.getUserObject() instanceof FolderResource)

                                contextMenu.addItem(updateItem);

                        String[] link = {"", ""};

                        gss.getTopPanel().getFileMenu().createDownloadLink(link, false);

                        downloadItem = new MenuItem("<span>" + link[0] + AbstractImagePrototype.create(newImages.download()).getHTML() + " Download" + link[1] + "</span>", true, downloadCmd);

                        contextMenu.addItem(downloadItem);

                        gss.getTopPanel().getFileMenu().createDownloadLink(link, true);

                        saveAsItem = new MenuItem("<span>" + link[0] + AbstractImagePrototype.create(newImages.download()).getHTML() + " Save As" + link[1] + "</span>", true, downloadCmd);

                        contextMenu.addItem(saveAsItem);

                        contextMenu.addItem(cutItem);

                        contextMenu.addItem(copyItem);

                        if(currentFolder!=null && currentFolder.getUserObject() instanceof FolderResource)

                                contextMenu.addItem(pasteItem);

                        contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.unselectAll()).getHTML() + "&nbsp;Unselect</span>", true, unselectAllCommand);

                        contextMenu.addItem(trashItem);

                        contextMenu.addItem(deleteItem);

                        contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.refresh()).getHTML() + "&nbsp;Refresh</span>", true, new RefreshCommand(this, images));

                        contextMenu.addItem(sharingItem);

                        contextMenu.addItem(propItem);

                }

                add(contextMenu);

                if (gss.getClipboard().hasFileItem())

                        pasteItem.setVisible(true);

                else

                        pasteItem.setVisible(false);

        }

        void onMultipleSelection() {

                updateItem.setVisible(false);

                downloadItem.setVisible(false);

                saveAsItem.setVisible(false);

                sharingItem.setVisible(false);

        }

        @Override

        public void onClick(ClickEvent event) {

                if (GSS.get().getCurrentSelection() != null)

                        if (GSS.get().getCurrentSelection() instanceof FileResource) {

                                FileResource res = (FileResource) GSS.get().getCurrentSelection();

                                FileContextMenu menu;

                                if (res.isDeleted())

                                        menu = new FileContextMenu(images, true, false);

                                else

                                        menu = new FileContextMenu(images, false, false);

                                int left = event.getRelativeElement().getAbsoluteLeft();

                                int top = event.getRelativeElement().getAbsoluteTop() + event.getRelativeElement().getOffsetHeight();

                                menu.setPopupPosition(left, top);

                                menu.show();

                        } else if (GSS.get().getCurrentSelection() instanceof List) {

                                FileContextMenu menu;

                                if (GSS.get().getFolders().isTrashItem(GSS.get().getFolders().getCurrent()))

                                        menu = new FileContextMenu(images, true, false);

                                else {

                                        menu = new FileContextMenu(images, false, false);

                                        menu.onMultipleSelection();

                                }

                                int left = event.getRelativeElement().getAbsoluteLeft();

                                int top = event.getRelativeElement().getAbsoluteTop() + event.getRelativeElement().getOffsetHeight();

                                menu.setPopupPosition(left, top);

                                menu.show();

                        }

        }

        public void onContextEvent(ContextMenuEvent event) {

                if (GSS.get().getCurrentSelection() != null)

                        if (GSS.get().getCurrentSelection() instanceof FileResource) {

                                FileResource res = (FileResource) GSS.get().getCurrentSelection();

                                FileContextMenu menu;

                                if (res.isDeleted())

                                        menu = new FileContextMenu(images, true, false);

                                else

                                        menu = new FileContextMenu(images, false, false);

                                int left = event.getNativeEvent().getClientX();

                                int top = event.getNativeEvent().getClientY();

                                menu.setPopupPosition(left, top);

                                menu.show();

                        } else if (GSS.get().getCurrentSelection() instanceof List) {

                                FileContextMenu menu;

                                if (GSS.get().getFolders().isTrashItem(GSS.get().getFolders().getCurrent()))

                                        menu = new FileContextMenu(images, true, false);

                                else {

                                        menu = new FileContextMenu(images, false, false);

                                        menu.onMultipleSelection();

                                }

                                int left = event.getNativeEvent().getClientX();

                                int top = event.getNativeEvent().getClientY();

                                menu.setPopupPosition(left, top);

                                menu.show();

                        }

        }

        public FileContextMenu onEvent(Event event) {

                FileContextMenu menu=null;

                if (GSS.get().getCurrentSelection() != null)

                        if (GSS.get().getCurrentSelection() instanceof FileResource) {

                                FileResource res = (FileResource) GSS.get().getCurrentSelection();

                                if (res.isDeleted())

                                        menu = new FileContextMenu(images, true, false);

                                else

                                        menu = new FileContextMenu(images, false, false);

                                int left = event.getClientX();

                                int top = event.getClientY();

                                menu.setPopupPosition(left, top);

                                menu.show();

                        } else if (GSS.get().getCurrentSelection() instanceof List) {

                                if (GSS.get().getFolders().isTrashItem(GSS.get().getFolders().getCurrent()))

                                        menu = new FileContextMenu(images, true, false);

                                else {

                                        menu = new FileContextMenu(images, false, false);

                                        menu.onMultipleSelection();

                                }

                                int left = event.getClientX();

                                int top = event.getClientY();

                                menu.setPopupPosition(left, top);

                                menu.show();

                        }

                return menu;

        }

        public FileContextMenu onEmptyEvent(Event event) {

                FileContextMenu menu=null;

                if (GSS.get().getFolders().isTrashItem(GSS.get().getFolders().getCurrent()))

                        menu = new FileContextMenu(images, true, true);

                else if(((DnDTreeItem)GSS.get().getFolders().getCurrent()).getFolderResource() != null)

                        menu = new FileContextMenu(images, false, true);

                else return menu;

                int left = event.getClientX();

                int top = event.getClientY();

                menu.setPopupPosition(left, top);

                menu.show();

                return menu;

        }

}