Synnefo » Pithos

/*

 *  Copyright (c) 2011 Greek Research and Technology Network

 */

package gr.grnet.pithos.web.client;

import gr.grnet.pithos.web.client.commands.CopyCommand;

import gr.grnet.pithos.web.client.commands.CutCommand;

import gr.grnet.pithos.web.client.commands.DeleteCommand;

import gr.grnet.pithos.web.client.commands.PasteCommand;

import gr.grnet.pithos.web.client.commands.ToTrashCommand;

import gr.grnet.pithos.web.client.rest.resource.FileResource;

import gr.grnet.pithos.web.client.rest.resource.GroupUserResource;

import gr.grnet.pithos.web.client.rest.resource.RestResourceWrapper;

import java.util.List;

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

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

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.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;

/**

 * The 'Edit' menu implementation.

 */

public class EditMenu extends PopupPanel implements ClickHandler {

        /**

         * The widget's images.

         */

        private final Images images;

        private final MenuBar contextMenu  = new MenuBar(true);

        /**

         * An image bundle for this widget's images.

         */

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

                /**

                 * Will bundle the file 'editcut.png' residing in the package

                 * 'gr.grnet.pithos.web.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/grnet/pithos/resources/editcut.png")

                ImageResource cut();

                /**

                 * Will bundle the file 'editcopy.png' residing in the package

                 * 'gr.grnet.pithos.web.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/grnet/pithos/resources/editcopy.png")

                ImageResource copy();

                /**

                 * Will bundle the file 'editpaste.png' residing in the package

                 * 'gr.grnet.pithos.web.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/grnet/pithos/resources/editpaste.png")

                ImageResource paste();

                /**

                 * Will bundle the file 'editdelete.png' residing in the package

                 * 'gr.grnet.pithos.web.resources'.

                 *

                 * @return the image prototype

                 */

                @Override

                @Source("gr/grnet/pithos/resources/editdelete.png")

                ImageResource delete();

                /**

                 * Will bundle the file 'translate.png' residing in the package

                 * 'gr.grnet.pithos.web.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/grnet/pithos/resources/translate.png")

                ImageResource selectAll();

                /**

                 * Will bundle the file 'border_remove.png' residing in the package

                 * 'gr.grnet.pithos.web.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/grnet/pithos/resources/border_remove.png")

                ImageResource unselectAll();

        }

        /**

         * The widget's constructor.

         *

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

         */

        public EditMenu(final Images newImages) {

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

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

                super(true);

                setAnimationEnabled(true);

                images = newImages;

                createMenu();

                add(contextMenu);

        }

        @Override

        public void onClick(ClickEvent event) {

                final EditMenu menu = new EditMenu(images);

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

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

                menu.setPopupPosition(left, top);

                menu.show();

        }

        public MenuBar createMenu() {

                contextMenu.clearItems();

                contextMenu.setAutoOpen(false);

                final Command selectAllCommand = new Command() {

                        @Override

                        public void execute() {

                                hide();

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

                                        GSS.get().getFileList().selectAllRows();

                        }

                };

                final Command unselectAllCommand = new Command() {

                        @Override

                        public void execute() {

                                hide();

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

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

                        }

                };

                boolean cutcopyVisible = GSS.get().getCurrentSelection() != null && (GSS.get().getCurrentSelection() instanceof RestResourceWrapper

                                        || GSS.get().getCurrentSelection() instanceof FileResource || GSS        .get().getCurrentSelection() instanceof GroupUserResource || GSS        .get().getCurrentSelection() instanceof List);

                String cutLabel = "Cut";

                String copyLabel ="Copy";

                String pasteLabel = "Paste";

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

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

                                cutLabel = "Cut Folder";

                                copyLabel = "Copy Folder";

                        }

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

                                cutLabel = "Cut File";

                                copyLabel = "Copy File";

                        }

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

                                cutLabel = "Cut Files";

                                copyLabel = "Copy Files";

                        }

                if(GSS.get().getClipboard().getItem() != null)

                        if(GSS.get().getClipboard().getItem().getFile() != null)

                                pasteLabel = "Paste File";

                        else if(GSS.get().getClipboard().getItem().getFiles() != null)

                                pasteLabel = "Paste Files";

                        else if(GSS.get().getClipboard().getItem().getRestResourceWrapper() != null)

                                pasteLabel = "Paste Folder";

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

                cutItem.getElement().setId("topMenu.edit.cut");

                contextMenu.addItem(cutItem).setVisible(cutcopyVisible);

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

                copyItem.getElement().setId("topMenu.edit.copy");

                contextMenu.addItem(copyItem).setVisible(cutcopyVisible);

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

                pasteItem.getElement().setId("topMenu.edit.paste");

                if (GSS.get().getClipboard().getItem() != null)

                        if(GSS.get().isUserListVisible() && GSS.get().getClipboard().getItem().getUser() == null){

                                contextMenu.addItem(pasteItem);

                        }

                        else if(!GSS.get().isUserListVisible() && GSS.get().getClipboard().getItem().getUser() != null){

                                //do not show paste

                        }

                        else if (GSS.get().getTreeView().getSelection() instanceof RestResourceWrapper){

                                contextMenu.addItem(pasteItem);

                        }

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

                moveToTrashItem.getElement().setId("topMenu.edit.moveToTrash");

                contextMenu        .addItem(moveToTrashItem)

                                        .setVisible(cutcopyVisible);

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

                deleteItem.getElement().setId("topMenu.edit.delete");

                contextMenu        .addItem(deleteItem)

                                        .setVisible(cutcopyVisible);

                MenuItem selectAllItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.selectAll()).getHTML() + "&nbsp;Select All</span>", true, selectAllCommand);

                selectAllItem.getElement().setId("topMenu.edit.selectAll");

                contextMenu.addItem(selectAllItem);

                MenuItem unSelectAllItem = new MenuItem("<span>" + AbstractImagePrototype.create(images.unselectAll()).getHTML() + "&nbsp;Unselect All</span>", true, unselectAllCommand);

                unSelectAllItem.getElement().setId("topMenu.edit.unSelectAll");

                contextMenu.addItem(unSelectAllItem);

                return contextMenu;

        }

}