PentahoMonthSelector.java

/*
 * Copyright 2008 Google Inc.
 *
 * 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 org.pentaho.gwt.widgets.client.datepicker;

/*
 * Copyright 2008 Google Inc.
 * 
 * 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.
 */

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HTMLTable.CellFormatter;
import com.google.gwt.user.client.ui.PushButton;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.user.datepicker.client.MonthSelector;

/**
 * A simple {@link MonthSelector} used for the default date picker. Not extensible as we wish to evolve it freely over
 * time.
 */

public final class PentahoMonthSelector extends MonthSelector {

  private PushButton backMonth;
  private PushButton backYear;
  private PushButton forwardMonth;
  private PushButton forwardYear;
  private Grid grid;
  private PentahoDatePicker picker;

  /**
   * Constructor.
   */
  public PentahoMonthSelector() {
  }

  public void setMyDatePicker( PentahoDatePicker picker ) {
    this.picker = picker;
  }

  protected void refresh() {
    String formattedMonth = getModel().formatCurrentMonth();
    grid.setText( 0, 2, formattedMonth );
  }

  protected void setup() {
    // Set up backwards.
    backMonth = new PushButton();
    backMonth.addClickHandler( new ClickHandler() {
      public void onClick( ClickEvent event ) {
        picker.addMonths( -1 );
      }
    } );

    backMonth.getUpFace().setHTML( "‹" );
    backMonth.setStyleName( "datePickerPreviousButton" );

    backYear = new PushButton();
    backYear.setStyleName( "datePickerPreviousButton" );
    backYear.addClickHandler( new ClickHandler() {
      public void onClick( ClickEvent event ) {
        picker.addMonths( -12 );
      }
    } );
    backYear.getUpFace().setHTML( "«" );

    forwardMonth = new PushButton();
    forwardMonth.getUpFace().setHTML( "›" );
    forwardMonth.setStyleName( "datePickerNextButton" );
    forwardMonth.addClickHandler( new ClickHandler() {
      public void onClick( ClickEvent event ) {
        picker.addMonths( +1 );
      }
    } );

    forwardYear = new PushButton();
    forwardYear.getUpFace().setHTML( "»" );
    forwardYear.setStyleName( "datePickerNextButton" );
    forwardYear.addClickHandler( new ClickHandler() {
      public void onClick( ClickEvent event ) {
        picker.addMonths( +12 );
      }
    } );

    // Set up grid.
    grid = new Grid( 1, 5 ) {
      public void setWidget( int row, int column, Widget widget ) {
        super.setWidget( row, column, widget );
      }
    };
    grid.setWidget( 0, 0, backYear );
    grid.setWidget( 0, 1, backMonth );
    grid.setWidget( 0, 3, forwardMonth );
    grid.setWidget( 0, 4, forwardYear );

    CellFormatter formatter = grid.getCellFormatter();
    formatter.setStyleName( 0, 2, "datePickerMonth" );
    formatter.setWidth( 0, 0, "1" );
    formatter.setWidth( 0, 1, "1" );
    formatter.setWidth( 0, 2, "100%" );
    formatter.setWidth( 0, 3, "1" );
    formatter.setWidth( 0, 4, "1" );
    grid.setStyleName( "datePickerMonthSelector" );

    initWidget( grid );
  }

}