ca.upei.ic.timetable.client.DepartmentModelView.java Source code

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Here is the source code for ca.upei.ic.timetable.client.DepartmentModelView.java

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/*
 *  Copyright 2008 University of Prince Edward Island
 *
 *  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 ca.upei.ic.timetable.client;

import com.google.gwt.core.client.GWT;
import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.json.client.JSONValue;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Hyperlink;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * A Model/View for listing all departments
 * @author felix
 *
 */
public class DepartmentModelView implements Model, View {

    private final VerticalPanel panel_;
    private final FindCourseViewController controller_;
    private final Hyperlink selectAllLink_;
    private final Hyperlink deselectAllLink_;
    private final VerticalPanel outerPanel_;

    public DepartmentModelView(FindCourseViewController controller) {
        controller_ = controller;

        selectAllLink_ = GWT.create(com.google.gwt.user.client.ui.Hyperlink.class);
        deselectAllLink_ = GWT.create(com.google.gwt.user.client.ui.Hyperlink.class);

        selectAllLink_.setText("Select All");
        selectAllLink_.addClickListener(new ClickListener() {

            public void onClick(Widget sender) {
                for (int index = 0; index < panel_.getWidgetCount(); index++) {
                    CheckBox box = (CheckBox) panel_.getWidget(index);
                    box.setChecked(true);
                    controller_.setDepartmentCriteria(box.getName(), true);
                }
            }

        });

        deselectAllLink_.setText("Select None");
        deselectAllLink_.addClickListener(new ClickListener() {
            public void onClick(Widget sender) {
                for (int index = 0; index < panel_.getWidgetCount(); index++) {
                    CheckBox box = (CheckBox) panel_.getWidget(index);
                    box.setChecked(false);
                    controller_.setDepartmentCriteria(box.getName(), false);
                }
            }
        });

        panel_ = GWT.create(VerticalPanel.class);
        panel_.setSpacing(3);
        outerPanel_ = PanelUtils.verticalPanel(
                PanelUtils.horizontalPanel(selectAllLink_, new HTML("&nbsp;/&nbsp;"), deselectAllLink_), panel_);
    }

    public void loadJSON(JSONValue value) {
        JSONArray array = (JSONArray) value;

        // iterate all json results
        for (int i = 0; i < array.size(); i++) {
            JSONString s = (JSONString) array.get(i);
            CheckBox box = new CheckBox(s.stringValue());
            box.setName(s.stringValue());
            // add the click listener
            box.addClickListener(new ClickListener() {

                public void onClick(Widget sender) {
                    final CheckBox box = (CheckBox) sender;
                    final String name = box.getName();
                    controller_.setDepartmentCriteria(name, box.isChecked());
                }

            });
            panel_.add(box);
        }
    }

    public void clear() {
        panel_.clear();
    }

    public Widget getWidget() {
        return outerPanel_;
    }

    public void addSubView(View subView) {
        throw new RuntimeException("Not Implemented.");
    }

    public ViewController getController() {
        return controller_;
    }

    public void hide() {
        outerPanel_.setVisible(false);
    }

    public void show() {
        outerPanel_.setVisible(true);
    }
}