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/*******************************************************************************
* Copyright (c) 2003, 2007 s IT Solutions AT Spardat GmbH .
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* s IT Solutions AT Spardat GmbH - initial API and implementation
*******************************************************************************/
/*
* @(#) $Id: DatePicker.java 9041 2012-02-13 10:22:49Z dschwarz $
*
*
*
*
*
*/
package at.spardat.xma.widgets;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Widget;
import org.vafada.swtcalendar.SWTCalendar;
import at.spardat.xma.mdl.IWModelClient;
import at.spardat.xma.mdl.UIDelegateClient;
import at.spardat.xma.mdl.WModel;
import at.spardat.xma.mdl.simple.ISimpleWM;
import at.spardat.xma.page.Scaler;
/**
* The DatePicker widget consists of a Text field and a Button.
* Usually the text field is to attach to a simple widget model, on which a Date validator has to be set.
* On a button click a date-chooser dialog is started, after date selection the
* dialog is closed and the selected date is written to the widget model.
* @author S3460
* @since version_number
*/
public class DatePicker extends Composite {
private static final String IMAGE_CALENDAR = "at/spardat/xma/widgets/icons/Calendar_scheduleHS.png";
/**
* Style constant for making Sundays red.
*/
public static final int RED_SUNDAY = SWTCalendar.RED_SUNDAY;
/**
* Style constant for making weekends red.
*/
public static final int RED_WEEKEND = SWTCalendar.RED_WEEKEND;
/**
* The text field showing the date. This field is to attach to a SimpleWMClient model.
*/
private Text dateTextField_ = null;
/**
* The drop down button starting the date-picker shell.
*/
private Button datePickerButton_ = null;
/**
* The style for the dateField field.
*/
int dateFieldStyle_ = (SWT.SINGLE|SWT.BORDER|SWT.LEFT);
/**
* The style for the date-picker composite.
* Can be any style valid for a Composite and RED_WEEKEND, RED_SUNDAY.
*/
int datePickerStyle_ = SWT.NONE;
/**
* The Locale used by the date-picker shell and its controls.
*/
private Locale locale_ = Locale.getDefault();
/**
* The Font used by the date-picker shell and its controls.
*/
private Font datepickerFont_;
/**
* Stores the selected date.
*/
private Calendar pickedCalendar_;
private boolean editable_ = true;
/**
*
* @param parent
* @param dateFieldStyle The style for the Text dateTextField. Any style valid or a Text widget.
* @param datePickerStyle The style for the date-picker composite. Can be any style valid for a Composite and RED_WEEKEND, RED_SUNDAY.
*/
public DatePicker(Composite parent, int dateFieldStyle, int datePickerStyle) {
super(parent, SWT.NONE);
this.dateFieldStyle_ = dateFieldStyle;
this.datePickerStyle_ = datePickerStyle;
createWidgets();
}
/**
*
* @param parent
* @param dateFieldStyle The style for the Text dateTextField. Any style valid or a Text widget.
*/
public DatePicker(Composite parent, int dateFieldStyle) {
super(parent, SWT.NONE);
this.dateFieldStyle_ = dateFieldStyle;
createWidgets();
}
/**
*
* @param parent
*/
public DatePicker(Composite parent) {
super(parent, SWT.NONE);
createWidgets();
}
/**
* Returns the text field used by the DatePicker.
* Usually this text field is attached to a widget model (ISimpleWM) with a date validator.
* @return Returns the dateTextField.
*/
public Text getDateTextField() {
return dateTextField_;
}
/**
* Returns the calendar set with the date as chosen by the date-chosser dialog.
* @return Returns the picked date as a Calendar.
* Returns null if called before anything was picked or set.
*/
public Calendar getPickedCalendar() {
return pickedCalendar_;
}
/**
* Sets the date preselected at the date-chooser dialog.
* Note that if this widget is attached to a model, then the model's date is preselected (if the model has a value).
* This method does not set the date in the dateTextField!
* @param aDate
* @since version_number
* @author S3460
*/
public void setDatePickerDate(Date aDate){
if(pickedCalendar_ == null){
pickedCalendar_ = Calendar.getInstance(locale_);
}
pickedCalendar_.setTime(aDate);
}
/**
* Sets the Font of the date-chooser dialog and its controls.
* (Not of the DateTextField, its properties can be set by getDateTextField())
* Optional - if not set then the controls' default Fonts are used.
*/
public void setDatePickerFont(Font font) {
datepickerFont_ = font;
}
/**
* Sets the Locale of the date-chooser dialog and its controls.
* (Not of the DateTextField. The text field's Locale is set by the Wiget model)
* Optional - if not set then the default Locale is used.
*/
public void setDatePickerLocale(Locale locale) {
locale_ = locale;
}
/**
* Initializes arrowDownButton_ , dateTextField_
* and the SelectionListener for arrowDownButton_ to start the date-picker shell.
*
* @since version_number
* @author S3460
*/
private void createWidgets(){
final Scaler scaler = Scaler.getInstance(this);
datePickerButton_ = new Button (this, SWT.PUSH);
Image calendarIcon = new Image(getShell().getDisplay(), DatePicker.class.getClassLoader().getResourceAsStream(IMAGE_CALENDAR));
datePickerButton_.setImage(calendarIcon);
dateTextField_ = new Text(this, dateFieldStyle_);
FormLayout layout = new FormLayout();
layout.marginHeight = scaler.convertYToCurrent(0);
layout.marginWidth = scaler.convertXToCurrent(0);
this.setLayout(layout);
FormData data = new FormData();
data.left = new FormAttachment(0,100,scaler.convertXToCurrent(0));
data.right = new FormAttachment(datePickerButton_,scaler.convertXToCurrent(-1),SWT.LEFT);
data.top = new FormAttachment(0,100,scaler.convertYToCurrent(0));
dateTextField_.setLayoutData(data);
dateTextField_.addKeyListener(new KeyListener(){
public void keyPressed(KeyEvent e) {
if(isEditable() && (e.keyCode == SWT.ARROW_DOWN || e.keyCode == SWT.ARROW_UP)){
showDatePicker();
}
}
public void keyReleased(KeyEvent e) {
}
});
data = new FormData();
data.width = scaler.convertXToCurrent(16);
data.right = new FormAttachment(100,100,scaler.convertXToCurrent(0));
data.top = new FormAttachment(dateTextField_,scaler.convertYToCurrent(0),SWT.TOP);
data.bottom = new FormAttachment(dateTextField_,scaler.convertYToCurrent(0),SWT.BOTTOM);
datePickerButton_.setLayoutData(data);
datePickerButton_.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent event) {
showDatePicker();
}
public void widgetDefaultSelected(SelectionEvent event) {
}
});
}
/**
* Starts the DatePicker shell at the loacation x,y.
* @param x
* @param y
* @since version_number
* @author S3460
*/
private void showDatePicker() {
Shell pickerShell = null;
try {
if(pickedCalendar_ == null){
pickedCalendar_ = Calendar.getInstance(locale_);
}
ISimpleWM dateTextFieldM = getWModel(dateTextField_);
pickerShell = new Shell(this.getShell(), SWT.APPLICATION_MODAL);
pickerShell.setLayout(new FillLayout());
SWTCalendar swtCalendar = new SWTCalendar(pickerShell, datePickerStyle_);
//set date from dateTextFieldM model for picker
if(dateTextFieldM != null){
Date date = dateTextFieldM.toDate();
if(date != null){
pickedCalendar_.setTime(date);
}
}
// Always set the Locale on swtCalendar before the calender as it refreshes the Calendar
swtCalendar.setLocale(locale_);
swtCalendar.setCalendar(pickedCalendar_);
if(datepickerFont_ != null)
swtCalendar.setFont(datepickerFont_);
pickerShell.pack();
//set the location of the pickerShell
Rectangle bounds = datePickerButton_.getBounds();
//Get absolute location of datePickerButton_
Point point = datePickerButton_.getParent().toDisplay(bounds.x, bounds.y);
//shift pickerShell to the left so that its right upper corner is under datePickerButton_
point.x -= (pickerShell.getSize().x - bounds.width);
//shift pickerShell down so that it is 0 pixels under datePickerButton_
point.y += bounds.height;
pickerShell.setLocation(point);
pickerShell.open();
Display display = Display.getCurrent();
while (!pickerShell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
if ( ! swtCalendar.wasCanceled() ) {
//get picked Calendar
pickedCalendar_ = swtCalendar.getCalendar();
//set picked date at model
if(dateTextFieldM != null){
dateTextFieldM.set(pickedCalendar_.getTime());
//status bar message is not updated (e.g. mandatory) as the following methods are called in this order:
//DialogPage.updateErrorStatus() - set the status bar, triggered by set of value at Text widget by model
//SimpleUIDelegateClient.updateErrorState() - actualizes the widget's error state, called by model
//So the handleModelChangeEvent() is called again (to call DialogPage.updateErrorStatus()).
((IWModelClient)dateTextFieldM).getUIDelegate().handleModelChangeEvent(null);
}
}
} finally {
if(pickerShell!= null)
pickerShell.dispose();
}
}
/* (non-Javadoc)
* @see org.eclipse.swt.widgets.Control#setBackground(org.eclipse.swt.graphics.Color)
*/
public void setBackground(Color color) {
super.setBackground(color);
dateTextField_.setBackground(color);
}
/* (non-Javadoc)
* @see org.eclipse.swt.widgets.Control#setEnabled(boolean)
* Also enables/disables childs of DatePicker.
*/
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
this.dateTextField_.setEnabled(enabled);
if(isEditable()){
this.datePickerButton_.setEnabled(enabled);
} else if (!enabled){
this.datePickerButton_.setEnabled(enabled);
}
}
/**
* Editables text field of DatePicker and enables/disables Button.
* @param editable
* @since version_number
* @author S3460
*/
public void setEditable(boolean editable) {
editable_ = editable;
this.dateTextField_.setEditable(editable);
if(getEnabled()){
this.datePickerButton_.setEnabled(editable);
}else if (!editable){
this.datePickerButton_.setEnabled(editable);
}
}
public boolean isEditable(){
return editable_;
}
/**
* @param widget
* @return The model attached to widget. Returns null if no model is attached.
*/
private static ISimpleWM getWModel(Widget widget) {
ISimpleWM simpleWM = null;
Object uiDelegate = (UIDelegateClient) widget.getData();
if (uiDelegate != null && uiDelegate instanceof UIDelegateClient) {
WModel model = ((UIDelegateClient)uiDelegate).getWModel();
if(model instanceof ISimpleWM){
simpleWM = (ISimpleWM) model;
}
}
return simpleWM;
}
/**
* Sets the receiver's tool tip text to the argument, which
* may be null indicating that no tool tip text should be shown.
*/
public void setToolTipText(String string) {
super.setToolTipText(string);
dateTextField_.setToolTipText(string);
datePickerButton_.setToolTipText(string);
}
// /* Sets the text of the text field.
// * (non-Javadoc)
// * @see org.eclipse.swt.widgets.Text#setText(java.lang.String)
// */
// public void setText(String string) {
// dateTextField_.setText(string);
// }
//
// /* Get the text of text field.
// * (non-Javadoc)
// * @see org.eclipse.swt.widgets.Text#getText()
// */
// public String getText() {
// return dateTextField_.getText();
// }
///**
//* Returns the button starting the date-chooser dialog.
//* @return Returns the date-picker Button.
//*/
//private Button getButton() {
// return datePickerButton_;
//}
}
