Synnefo » Pithos Web Client

/*

 * Copyright 2011-2012 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.foldertree;

import gr.grnet.pithos.web.client.FolderContextMenu;

import gr.grnet.pithos.web.client.Pithos;

import gr.grnet.pithos.web.client.PithosDisclosurePanel;

import gr.grnet.pithos.web.client.TreeView;

import com.google.gwt.core.client.GWT;

import com.google.gwt.i18n.client.NumberFormat;

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

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

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

import com.google.gwt.safehtml.client.SafeHtmlTemplates;

import com.google.gwt.safehtml.shared.SafeHtml;

import com.google.gwt.user.cellview.client.CellTree;

import com.google.gwt.user.cellview.client.HasKeyboardSelectionPolicy.KeyboardSelectionPolicy;

import com.google.gwt.user.cellview.client.TreeNode;

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

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

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

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

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

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

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

public class FolderTreeView extends Composite implements TreeView {

        public boolean isFolderOpen(Folder folder) {

        TreeNode root = ((CellTree) getWidget()).getRootTreeNode();

        return isFolderOpen(root, folder);

        }

        private boolean isFolderOpen(TreeNode node, Folder folder) {

        for (int i=0; i<node.getChildCount(); i++) {

            if (folder.equals(node.getChildValue(i))) {

                return node.isChildOpen(i);

            }

                        if (node.isChildOpen(i)) {

                            TreeNode n = node.setChildOpen(i, true);

                            return isFolderOpen(n, folder);

                        }

            }

        return false;

        }

    public void openFolder(Folder folder) {

        TreeNode root = tree.getRootTreeNode();

        openFolder(root, folder);

    }

    private void openFolder(TreeNode node, Folder folder) {

        for (int i=0; i<node.getChildCount(); i++) {

            if (folder.equals(node.getChildValue(i))) {

                    node.setChildOpen(i, false, true);

                    node.setChildOpen(i, true, true);

                    break;

            }

                        if (node.isChildOpen(i)) {

                            TreeNode n = node.setChildOpen(i, true);

                            openFolder(n, folder);

                            break;

                        }

            }

    }

    static interface BasicResources extends CellTree.Resources {

        @Override

                @ImageOptions(flipRtl = true)

        @Source("gr/grnet/pithos/web/client/cellTreeClosedItem.png")

        ImageResource cellTreeClosedItem();

        @Override

                @ImageOptions(flipRtl = true)

        @Source("gr/grnet/pithos/web/client/cellTreeLoadingBasic.gif")

        ImageResource cellTreeLoading();

        @Override

                @ImageOptions(flipRtl = true)

        @Source("gr/grnet/pithos/web/client/cellTreeOpenItem.png")

        ImageResource cellTreeOpenItem();

        @Override

                @Source({"gr/grnet/pithos/web/client/PithosCellTreeBasic.css"})

        CellTree.Style cellTreeStyle();

        @Source("gr/grnet/pithos/web/client/cellTreeLoadingBasic.gif")

        @ImageOptions(repeatStyle=RepeatStyle.None)

        ImageResource cellTreeLoadingBasic();

    }

    public static interface Images extends Tree.Resources, FolderContextMenu.Images {

        @Source("gr/grnet/pithos/resources/home22.png")

        ImageResource home();

        @Source("gr/grnet/pithos/resources/2folder22.png")

        public ImageResource folderYellow();

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

        ImageResource document();

        @Source("gr/grnet/pithos/resources/myshared22.png")

        ImageResource myShared();

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

        ImageResource sharedFolder();

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

        ImageResource trash();

    }

    static Images images = GWT.create(Images.class);

    static interface Templates extends SafeHtmlTemplates {

        public Templates INSTANCE = GWT.create(Templates.class);

        @Template("<span style='vertical-align: middle;'>{0}</span>")

        public SafeHtml nameSpan(String name);

        @Template("<span class='pithos-folderLabel'>{0}</span>")

        public SafeHtml imageSpan(String name);

    }

    interface Resources extends gr.grnet.pithos.web.client.PithosDisclosurePanel.Resources {

                @Override

                @Source("gr/grnet/pithos/resources/home22.png")

            ImageResource icon();

    }

    private FolderTreeViewModel model;

    CellTree tree;

    private HTML usedBytes;

    private HTML totalBytes;

    private HTML usedPercent;

    public FolderTreeView(FolderTreeViewModel viewModel) {

        this.model = viewModel;

        PithosDisclosurePanel panel = new PithosDisclosurePanel((Resources) GWT.create(Resources.class), "My Files", true);

        VerticalPanel content = new VerticalPanel();

        /*

         * Create the tree using the model. We use <code>null</code> as the default

         * value of the root node. The default value will be passed to

         * CustomTreeModel#getNodeInfo();

         */

        CellTree.Resources res = GWT.create(BasicResources.class);

        tree = new CellTree(model, null, res);

        tree.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.ENABLED);

        tree.setDefaultNodeSize(5000);

        content.add(tree);

        HorizontalPanel statistics = new HorizontalPanel();

            statistics.addStyleName(Pithos.resources.pithosCss().statistics());

            statistics.add(new HTML("Used: "));

            usedBytes = new HTML();

            statistics.add(usedBytes);

            statistics.add(new HTML(" of "));

            totalBytes = new HTML();

            statistics.add(totalBytes);

            statistics.add(new HTML(" ("));

            usedPercent = new HTML();

            statistics.add(usedPercent);

            statistics.add(new HTML(")"));

            content.add(statistics);

            content.setCellHorizontalAlignment(statistics, HasHorizontalAlignment.ALIGN_CENTER);

        panel.setContent(content);

        initWidget(panel);

    }

    @Override

        public Folder getSelection() {

       return model.getSelection();

    }

    public void updateFolder(Folder folder, boolean showfiles, Command callback, final boolean openParent) {

        model.updateFolder(folder, showfiles, callback, openParent);

    }

        public void showStatistics(AccountResource account) {

            usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));

            totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));

            NumberFormat nf = NumberFormat.getPercentFormat();

            usedPercent.setHTML(nf.format(account.getUsedPercentage()));

        }

        public void setSelection(Folder f) {

                model.setSelection(f);

        }

}