/*
* Copyright 2008 Jeff Dwyer
*
* 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.
*/
/*
* Simple Date Picker Widget for GWT library of Google, Inc.
*
* Copyright (c) 2006 Parvinder Thapar
* http://psthapar.googlepages.com/
*
* This library is free software; you can redistribute
* it and/or modify it under the terms of the GNU Lesser
* General Public License as published by the Free Software
* Foundation; either version 2.1 of the License, or
* (at your option) any later version. This library 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 GNULesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* PublicLicense along with this library; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.apress.progwt.client.widget.datepicker;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.DockPanel;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Widget;
/*
* CalendarTraversalPanel extends Dock Panel and comprises of
* buttons which allow the users to traverse month and year in
* the calendar. It also shows the current month and year
*/
public class CalendarTraversalPanel extends DockPanel implements ClickListener{
HTML monthYearDesc = new HTML();
//Button prevMonth = new Button(" < ", this);
Button prevMonth = new Button("<", this);
Button prevYear = new Button("<<", this);
Button nextYear = new Button(">>", this);
Button nextMonth = new Button(">", this);
DatePicker datePicker = null;
/*
* Constrcutor
*
* @param DatePicker
*/
public CalendarTraversalPanel(DatePicker datePicker){
this.datePicker = datePicker;
init();
}
/*
* init
*
* Does the initialization of the panel along with its
* children widgets
*/
private void init(){
this.setHeight(18 +"px");
drawTitle();
this.prevMonth.setWidth(23 + "px");
this.nextMonth.setWidth(23 + "px");
DOM.setAttribute(prevMonth.getElement(), "title", "Previous Month");
DOM.setAttribute(prevYear.getElement(), "title", "Previous Year");
DOM.setAttribute(nextMonth.getElement(), "title", "Next Month");
DOM.setAttribute(nextYear.getElement(), "title", "Next Year");
HorizontalPanel prevButtons = new HorizontalPanel();
prevMonth.setStyleName("monthYearTraversorBtn");
prevYear.setStyleName("monthYearTraversorBtn");
prevButtons.add(prevYear);
prevButtons.add(prevMonth);
HorizontalPanel nextButtons = new HorizontalPanel();
nextMonth.setStyleName("monthYearTraversorBtn");
nextYear.setStyleName("monthYearTraversorBtn");
nextButtons.add(nextMonth);
nextButtons.add(nextYear);
this.add(prevButtons, DockPanel.WEST);
this.setCellHorizontalAlignment(prevButtons, DockPanel.ALIGN_LEFT);
this.add(nextButtons, DockPanel.EAST);
this.setCellHorizontalAlignment(nextButtons, DockPanel.ALIGN_RIGHT);
this.add(monthYearDesc, DockPanel.CENTER);
this.setVerticalAlignment(DockPanel.ALIGN_MIDDLE);
this.setCellHorizontalAlignment(this.monthYearDesc, HasAlignment.ALIGN_CENTER);
this.setCellVerticalAlignment(this.monthYearDesc, HasAlignment.ALIGN_MIDDLE);
this.setCellWidth(monthYearDesc, "100%");
monthYearDesc.setStyleName("monthYearTraversor");
this.setStyleName("monthYearTraversor");
}
/*
* drawTitle
*
* Displays the current month and year
*/
void drawTitle(){
redrawTitle();
}
/*
* redrawTitle
*
* Displays the new month and year when the user traverses
* the month or year
*/
private void redrawTitle(){
StringBuffer monthYearTitle = new StringBuffer();
monthYearTitle.append(DateUtil.getMonth(this.datePicker.getCurrentDate()));
monthYearTitle.append("-");
monthYearTitle.append(this.datePicker.getCurrentDate().getYear()+1900);
this.monthYearDesc.setText(monthYearTitle.toString());
}
/*
* onClick
*
* Method from ClickListener
* Decribes what to do when the user clicks on the buttons
* on the panel
*/
public void onClick(Widget sender) {
if (sender == prevMonth) {
this.datePicker.setCurrentDate(DateUtil.addMonths(this.datePicker.getCurrentDate(), -1));
} else if (sender == prevYear) {
this.datePicker.setCurrentDate(DateUtil.addYears(this.datePicker.getCurrentDate(), -1));
} else if (sender == nextYear) {
this.datePicker.setCurrentDate(DateUtil.addYears(this.datePicker.getCurrentDate(), 1));
} else if (sender == nextMonth) {
this.datePicker.setCurrentDate(DateUtil.addMonths(this.datePicker.getCurrentDate(), 1));
}
this.redrawTitle();
this.datePicker.redrawCalendar();
}
}