package org.activityinfo.ui.client.page.report;

/*
 * #%L
 * ActivityInfo Server
 * %%
 * Copyright (C) 2009 - 2013 UNICEF
 * %%
 * This program 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 3 of the 
 * License, or (at your option) any later version.
 * 
 * This program 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 this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

import com.extjs.gxt.ui.client.Style.AutoSizeMode;
import com.extjs.gxt.ui.client.event.EditorEvent;
import com.extjs.gxt.ui.client.event.Events;
import com.extjs.gxt.ui.client.event.Listener;
import com.extjs.gxt.ui.client.widget.Editor;
import com.extjs.gxt.ui.client.widget.form.TextField;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.SpanElement;
import com.google.gwt.resources.client.CssResource;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.HasText;
import com.google.gwt.user.client.ui.Widget;
import org.activityinfo.i18n.shared.I18N;

public class ReportTitleWidget extends Widget implements HasText {

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

    interface ReportTitleWidgetUiBinder extends UiBinder<Element, ReportTitleWidget> {
    }

    interface MyStyle extends CssResource {
        String reportTitle();

        String reportTitleEditor();

        String changeTitleText();
    }

    @UiField SpanElement titleSpan;

    @UiField MyStyle style;

    private Editor titleEditor;

    private String text;

    public ReportTitleWidget() {
        setElement(uiBinder.createAndBindUi(this));

        TextField<String> titleField = new TextField<String>();
        titleField.addInputStyleName(style.reportTitleEditor());

        titleEditor = new Editor(titleField);
        titleEditor.setAutoSizeMode(AutoSizeMode.HEIGHT);
        titleEditor.setConstrain(true);
        titleEditor.setAlignment("cl");
        titleEditor.setWidth(400);
        titleEditor.setHeight(16);
        titleEditor.setCompleteOnEnter(true);

        sinkEvents(Event.ONCLICK);
    }

    @Override
    public String getText() {
        return text;
    }

    @Override
    public void setText(String text) {
        this.text = text;
        titleSpan.setInnerText(text == null ? I18N.CONSTANTS.untitledReport() : text);
    }

    @Override
    public void onBrowserEvent(Event event) {
        Element clicked = event.getEventTarget().cast();
        if (clicked.getClassName().equals(style.reportTitle()) ||
            clicked.getClassName().equals(style.changeTitleText())) {
            titleEditor.startEdit((com.google.gwt.user.client.Element) titleSpan.cast(), text);
        }
    }

    public void addEditCompleteListener(Listener<EditorEvent> listener) {
        titleEditor.addListener(Events.Complete, listener);
    }
}