cz.filmtit.client.dialogs.MediaSelector.java Source code

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Here is the source code for cz.filmtit.client.dialogs.MediaSelector.java

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/*Copyright 2012 FilmTit authors - Karel Blek, Josef ech, Joachim Daiber, Jindich Libovick, Rudolf Rosa, Jan Vcl
Copyright 2017
    
This file is part of FilmTit.
    
FilmTit is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2.0 of the License, or
(at your option) any later version.
    
FilmTit is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with FilmTit.  If not, see <http://www.gnu.org/licenses/>.*/

package cz.filmtit.client.dialogs;

import java.util.List;

import com.github.gwtbootstrap.client.ui.Button;
import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.cell.client.Cell;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.cellview.client.CellList;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.view.client.SelectionChangeEvent;
import com.google.gwt.view.client.SingleSelectionModel;

import cz.filmtit.client.ReceivesSelectSource;
import cz.filmtit.share.MediaSource;

/**
 * Lets the user select the intended media source from the list of suggestions.
 * @author FilmTit, Mat Nmen
 */
public class MediaSelector extends Dialog {
    private List<MediaSource> suggestions;
    private MediaSource selected;

    private static MediaSelectorUiBinder uiBinder = GWT.create(MediaSelectorUiBinder.class);

    interface MediaSelectorUiBinder extends UiBinder<Widget, MediaSelector> {
    }

    private static class MediaCell extends AbstractCell<MediaSource> {

        @Override
        public void render(Cell.Context context, MediaSource value, SafeHtmlBuilder sb) {
            // Value can be null, so do a null check..
            if (value == null) {
                return;
            }

            sb.appendHtmlConstant("<table>");

            // Add the contact image.
            sb.appendHtmlConstant("<tr><td rowspan='3' class='mediasource_thumb'>");

            if (value.getThumbnailURL() != null)
                sb.appendHtmlConstant("<img src='" + value.getThumbnailURL() + "' />");
            else
                sb.appendHtmlConstant("<div class='no_thumb'>?</div>");

            sb.appendHtmlConstant("</td>");

            // Add the name and address.
            sb.appendHtmlConstant("<td style='font-size:95%;'>");
            sb.appendEscaped(value.toString());
            sb.appendHtmlConstant("</td></tr><tr><td>");
            sb.appendEscaped("");
            sb.appendHtmlConstant("</td></tr></table>");
        }
    }

    /**
     * To be called on submit.
     */
    private ReceivesSelectSource receiver;

    /**
     * Lets the user select the intended media source from the list of suggestions.
     * @param suggestions MediaSource suggestions.
     * @param receiver A class that waits for the user to select the media source and then sets it.
     */
    public MediaSelector(List<MediaSource> suggestions, ReceivesSelectSource receiver) {
        super();
        listbox = new CellList<MediaSource>(new MediaCell());

        initWidget(uiBinder.createAndBindUi(this));

        listbox.addStyleName("mediasource_selector");
        listbox.setRowData(0, suggestions);
        listbox.setRowCount(suggestions.size());

        final SingleSelectionModel<MediaSource> selectionModel = new SingleSelectionModel<MediaSource>();
        listbox.setSelectionModel(selectionModel);

        selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
            public void onSelectionChange(SelectionChangeEvent event) {
                selected = selectionModel.getSelectedObject();
            }
        });

        this.suggestions = suggestions;
        this.receiver = receiver;
    }

    //    public void setSelected(MediaSource mediaSource) {
    //        this.selected = mediaSource;
    //    }

    @UiField(provided = true)
    CellList<MediaSource> listbox;

    @UiField
    Button submitButton;

    @UiHandler("submitButton")
    void submitButtonClicked(ClickEvent e) {
        close();
        receiver.selectSource(selected);
    }

    @Override
    protected void onHide() {
        receiver.selectSource(null);
    }

}