/* * Copyright 2006 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 com.google.gwt.sample.dynatable.client;import com.google.gwt.user.client.ui.Button;import com.google.gwt.user.client.ui.CheckBox;import com.google.gwt.user.client.ui.ClickListener;import com.google.gwt.user.client.ui.Composite;import com.google.gwt.user.client.ui.HasAlignment;import com.google.gwt.user.client.ui.HorizontalPanel;import com.google.gwt.user.client.ui.VerticalPanel;import com.google.gwt.user.client.ui.Widget;/** * A UI Widget that allows a user to filter the days being displayed in the * dynamic table. */public class DayFilterWidget extends Composite {  private class DayCheckBox extends CheckBox {    public final int day;    public DayCheckBox(String caption, int day) {      super(caption);      // Remember custom data for this widget.      this.day = day;      // Use a shared listener to save memory.      addClickListener(dayCheckBoxListener);      // Initialize based on the calendar's current value.      setChecked(calendar.getDayIncluded(day));    }  }  private class DayCheckBoxListener implements ClickListener {    public void onClick(Widget sender) {      DayCheckBox dayCheckBox = ((DayCheckBox) sender);      calendar.setDayIncluded(dayCheckBox.day, dayCheckBox.isChecked());    }  }  private final SchoolCalendarWidget calendar;  private final VerticalPanel outer = new VerticalPanel();  private final DayCheckBoxListener dayCheckBoxListener = new DayCheckBoxListener();  public DayFilterWidget(SchoolCalendarWidget calendar) {    this.calendar = calendar;    initWidget(outer);    setStyleName("DynaTable-DayFilterWidget");    outer.add(new DayCheckBox("Sunday", 0));    outer.add(new DayCheckBox("Monday", 1));    outer.add(new DayCheckBox("Tuesday", 2));    outer.add(new DayCheckBox("Wednesday", 3));    outer.add(new DayCheckBox("Thursday", 4));    outer.add(new DayCheckBox("Friday", 5));    outer.add(new DayCheckBox("Saturday", 6));    Button buttonAll = new Button("All", new ClickListener() {      public void onClick(Widget sender) {        setAllCheckBoxes(true);      }    });    Button buttonNone = new Button("None", new ClickListener() {      public void onClick(Widget sender) {        setAllCheckBoxes(false);      }    });    HorizontalPanel hp = new HorizontalPanel();    hp.setHorizontalAlignment(HasAlignment.ALIGN_CENTER);    hp.add(buttonAll);    hp.add(buttonNone);    outer.add(hp);    outer.setCellVerticalAlignment(hp, HasAlignment.ALIGN_BOTTOM);    outer.setCellHorizontalAlignment(hp, HasAlignment.ALIGN_CENTER);  }  private void setAllCheckBoxes(boolean checked) {    for (int i = 0, n = outer.getWidgetCount(); i < n; ++i) {      Widget w = outer.getWidget(i);      if (w instanceof DayCheckBox) {        ((DayCheckBox) w).setChecked(checked);        dayCheckBoxListener.onClick(w);      }    }  }}