com.goodow.wave.client.wavepanel.blip.TreeTestViewModel.java Source code

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Here is the source code for com.goodow.wave.client.wavepanel.blip.TreeTestViewModel.java

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/*
 * Copyright 2012 Goodow.com
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.goodow.wave.client.wavepanel.blip;

import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.cell.client.Cell;
import com.google.gwt.cell.client.CompositeCell;
import com.google.gwt.cell.client.FieldUpdater;
import com.google.gwt.cell.client.HasCell;
import com.google.gwt.dom.client.Element;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.view.client.ListDataProvider;
import com.google.gwt.view.client.TreeViewModel;

import java.util.ArrayList;
import java.util.List;

public class TreeTestViewModel implements TreeViewModel {

    // private Map<String, List<String>> title;

    private ListDataProvider<String> titles = new ListDataProvider<String>();
    private CompositeCell<Integer> composite;

    private AbstractCell<String> cell = new AbstractCell<String>() {

        @Override
        public void render(final com.google.gwt.cell.client.Cell.Context context, final String value,
                final SafeHtmlBuilder sb) {
            sb.append(SafeHtmlUtils.fromString(value));
        }

    };

    TreeTestViewModel() {
        List<String> title = titles.getList();
        title.add("a");
        title.add("b");
        title.add("c");
        title.add("d");

        List<HasCell<Integer, ?>> hasCell = new ArrayList<HasCell<Integer, ?>>();
        hasCell.add(new HasCell<Integer, Integer>() {

            private AbstractCell<Integer> cell = new AbstractCell<Integer>() {

                @Override
                public void render(final com.google.gwt.cell.client.Cell.Context context, final Integer value,
                        final SafeHtmlBuilder sb) {
                    sb.append(SafeHtmlUtils.fromTrustedString("<div style='float:left;'>"));
                    sb.append(value.intValue());
                    sb.append(SafeHtmlUtils.fromTrustedString("</div>"));
                }
            };

            @Override
            public Cell<Integer> getCell() {
                return cell;
            }

            @Override
            public FieldUpdater<Integer, Integer> getFieldUpdater() {
                return null;
            }

            @Override
            public Integer getValue(final Integer object) {
                return object;
            }
        });

        hasCell.add(new HasCell<Integer, Integer>() {

            private TrangleButtonCell<Integer> tbc = new TrangleButtonCell<Integer>();

            @Override
            public Cell<Integer> getCell() {
                return tbc;
            }

            @Override
            public FieldUpdater<Integer, Integer> getFieldUpdater() {
                return null;
            }

            @Override
            public Integer getValue(final Integer object) {
                return object;
            }
        });

        composite = new CompositeCell<Integer>(hasCell) {

            @Override
            public void render(final Context context, final Integer value, final SafeHtmlBuilder sb) {
                sb.append(SafeHtmlUtils.fromTrustedString("<div>"));
                super.render(context, value, sb);
                sb.append(SafeHtmlUtils.fromTrustedString("</div>"));
            }

            @Override
            protected Element getContainerElement(final Element parent) {
                return parent.getFirstChildElement();
            }

            @Override
            protected <X> void render(final Context context, final Integer value, final SafeHtmlBuilder sb,
                    final HasCell<Integer, X> hasCell) {
                Cell<X> cell = hasCell.getCell();
                // sb.append(SafeHtmlUtils.fromTrustedString("<div>"));
                cell.render(context, hasCell.getValue(value), sb);
                // sb.append(SafeHtmlUtils.fromTrustedString("</div>"));
            }
        };

    }

    @Override
    public <T> NodeInfo<?> getNodeInfo(final T value) {
        if (value == null) {
            return new DefaultNodeInfo<String>(titles, cell);
        } else if (value instanceof String) {
            List<Integer> a = new ArrayList<Integer>();
            a.add(new Integer(50));
            a.add(new Integer(50));
            return new DefaultNodeInfo<Integer>(new ListDataProvider<Integer>(a), composite);
        }
        String type = value.getClass().getName();
        throw new IllegalArgumentException("Unsupported object type: " + type);
    }

    @Override
    public boolean isLeaf(final Object value) {
        return value instanceof Integer;
    }

}