code.grnet.gr Git - pithos/blob - web_client/src/gr/grnet/pithos/web/client/tagtree/TagTreeViewModel.java

   1 /*
   2  * Copyright 2011 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35
  36 package gr.grnet.pithos.web.client.tagtree;
  37
  38 import com.google.gwt.cell.client.AbstractCell;
  39 import com.google.gwt.cell.client.Cell;
  40 import com.google.gwt.cell.client.TextCell;
  41 import com.google.gwt.event.dom.client.ContextMenuEvent;
  42 import com.google.gwt.safehtml.shared.SafeHtml;
  43 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  44 import com.google.gwt.text.shared.SafeHtmlRenderer;
  45 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  46 import com.google.gwt.view.client.ListDataProvider;
  47 import com.google.gwt.view.client.SingleSelectionModel;
  48 import com.google.gwt.view.client.TreeViewModel;
  49 import gr.grnet.pithos.web.client.tagtree.TagTreeView.Templates;
  50
  51 public class TagTreeViewModel implements TreeViewModel {
  52
  53     private Cell<Tag> tagCell = new AbstractCell<Tag>(ContextMenuEvent.getType().getName()) {
  54
  55        @Override
  56         public void render(Context context, Tag tag, SafeHtmlBuilder safeHtmlBuilder) {
  57             String html = AbstractImagePrototype.create(TagTreeView.images.info()).getHTML();
  58             safeHtmlBuilder.appendHtmlConstant(html);
  59             safeHtmlBuilder.append(Templates.INSTANCE.nameSpan(tag.getName()));
  60         }
  61
  62         @Override
  63         public void onBrowserEvent(Context context, com.google.gwt.dom.client.Element parent, Tag tag, com.google.gwt.dom.client.NativeEvent event, com.google.gwt.cell.client.ValueUpdater<Tag> valueUpdater) {
  64             if (event.getType().equals(com.google.gwt.event.dom.client.ContextMenuEvent.getType().getName())) {
  65                 TagTreeViewModel.this.selectionModel.setSelected(tag, true);
  66             }
  67         }
  68     };
  69
  70     private ListDataProvider<String> rootDataProvider = new ListDataProvider<String>();
  71     private ListDataProvider<Tag> tagDataProvider = new ListDataProvider<Tag>();
  72
  73     private SingleSelectionModel<Tag> selectionModel;
  74
  75     public TagTreeViewModel(SingleSelectionModel<Tag> selectionModel) {
  76         this.selectionModel = selectionModel;
  77     }
  78
  79     @Override
  80     public <T> NodeInfo<?> getNodeInfo(T value) {
  81         if (value == null) {
  82             rootDataProvider.getList().add("Tags");
  83             return new DefaultNodeInfo<String>(rootDataProvider, new TextCell(new SafeHtmlRenderer<String>() {
  84                 @Override
  85                 public SafeHtml render(String object) {
  86                     SafeHtmlBuilder builder = new SafeHtmlBuilder();
  87                     String html = AbstractImagePrototype.create(TagTreeView.images.tag()).getHTML();
  88                     builder.appendHtmlConstant(html);
  89                     builder.append(Templates.INSTANCE.nameSpan(object));
  90                     return builder.toSafeHtml();
  91                 }
  92
  93                 @Override
  94                 public void render(String object, SafeHtmlBuilder builder) {
  95                     String html = AbstractImagePrototype.create(TagTreeView.images.tag()).getHTML();
  96                     builder.appendHtmlConstant(html);
  97                     builder.append(Templates.INSTANCE.nameSpan(object));
  98                 }
  99             }), new SingleSelectionModel<String>(), null);
 100         }
 101         else if (value instanceof String) {
 102             //fetchAllTags();
 103             return new DefaultNodeInfo<Tag>(tagDataProvider, tagCell, selectionModel, null);
 104         }
 105         else
 106             return null;
 107     }
 108
 109     @Override
 110     public boolean isLeaf(Object o) {
 111         if (o == null)
 112             return false;
 113         if (o instanceof String)
 114             return false;
 115         else
 116             return true;
 117     }
 118
 119 //    private void fetchFolder(final Iterator<Tag> iter, final ListDataProvider<Tag> dataProvider, final Set<Tag> tags) {
 120 //        final GSS app = GSS.get();
 121 //        if (iter.hasNext()) {
 122 //            final Tag f = iter.next();
 123 //
 124 //            String path = app.getApiPath() + app.getUsername() + "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix();
 125 //            GetRequest<Tag> getFolder = new GetRequest<Tag>(Tag.class, path, f) {
 126 //                @Override
 127 //                public void onSuccess(Tag result) {
 128 //                    fetchFolder(iter, dataProvider, tags);
 129 //                }
 130 //
 131 //                @Override
 132 //                public void onError(Throwable t) {
 133 //                    GWT.log("Error getting folder", t);
 134 //                    if (t instanceof RestException)
 135 //                        GSS.get().displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 136 //                    else
 137 //                        GSS.get().displayError("System error fetching folder: " + t.getMessage());
 138 //                }
 139 //            };
 140 //            getFolder.setHeader("X-Auth-Token", app.getToken());
 141 //            Scheduler.get().scheduleDeferred(getFolder);
 142 //        }
 143 //        else {
 144 //            dataProvider.getList().clear();
 145 //            dataProvider.getList().addAll(tags);
 146 //            if (dataProvider.equals(rootDataProvider)) {
 147 //                selectionModel.setSelected(dataProvider.getList().get(0), true);
 148 //
 149 //                Tag f = new Tag("Trash");
 150 //                f.setTrash(true);
 151 //                f.setContainer("trash");
 152 //                dataProvider.getList().add(f);
 153 //
 154 //                f = new Tag("Shared");
 155 //                f.setContainer("shared");
 156 //                dataProvider.getList().add(f);
 157 //
 158 //                f = new Tag("Others");
 159 //                f.setContainer("others");
 160 //                dataProvider.getList().add(f);
 161 //
 162 //                f = new Tag("Tags");
 163 //                f.setContainer("tags");
 164 //                dataProvider.getList().add(f);
 165 //
 166 //                f = new Tag("Groups");
 167 //                f.setContainer("groups");
 168 //                dataProvider.getList().add(f);
 169 //            }
 170 //        }
 171 //    }
 172 //
 173 //    public void initialize(AccountResource account) {
 174 //        Iterator<Tag> iter = account.getContainers().iterator();
 175 //        fetchFolder(iter, rootDataProvider, account.getContainers());
 176 //    }
 177 //
 178     public Tag getSelection() {
 179         return selectionModel.getSelectedObject();
 180     }
 181
 182     public void updateTag(Tag tag) {
 183 //        if (dataProviderMap.get(tag) == null) {
 184 //            dataProviderMap.put(tag, new ListDataProvider<Tag>());
 185 //        }
 186 //        final ListDataProvider<Tag> dataProvider = dataProviderMap.get(tag);
 187 //        if (!tag.isTrash())
 188 //            fetchFolder(tag, dataProvider);
 189 //        else
 190 //            GSS.get().showFiles(tag);
 191     }
 192
 193 //    public void fetchFolder(final Tag f, final ListDataProvider<Tag> dataProvider) {
 194 //        dataProvider.flush();
 195 //        Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 196 //            @Override
 197 //            public void execute() {
 198 //                final GSS app = GSS.get();
 199 //                String path = app.getApiPath() + app.getUsername() + "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix();
 200 //                GetRequest<Tag> getFolder = new GetRequest<Tag>(Tag.class, path, f) {
 201 //                    @Override
 202 //                    public void onSuccess(Tag result) {
 203 //                        app.showFiles(result);
 204 //                        Iterator<Tag> iter = result.getSubfolders().iterator();
 205 //                        fetchFolder(iter, dataProvider, result.getSubfolders());
 206 //                    }
 207 //
 208 //                    @Override
 209 //                    public void onError(Throwable t) {
 210 //                        GWT.log("Error getting folder", t);
 211 //                        if (t instanceof RestException)
 212 //                            GSS.get().displayError("Error getting folder: " + ((RestException) t).getHttpStatusText());
 213 //                        else
 214 //                            GSS.get().displayError("System error fetching folder: " + t.getMessage());
 215 //                    }
 216 //                };
 217 //                getFolder.setHeader("X-Auth-Token", app.getToken());
 218 //                Scheduler.get().scheduleDeferred(getFolder);
 219 //            }
 220 //        });
 221 //    }
 222 }