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Utility code for use with GWT and Mvp4g.
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* C E D A R
* S O L U T I O N S "Software done right."
* S O F T W A R E
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Copyright (c) 2013-2014 Kenneth J. Pronovici.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the Apache License, Version 2.0.
* See LICENSE for more information about the licensing terms.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Author : Kenneth J. Pronovici
* Language : Java 6
* Project : Common Java Functionality
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
package com.cedarsolutions.client.gwt.widget;
import static com.cedarsolutions.util.gwt.GwtStringUtils.substring;
import static com.cedarsolutions.util.gwt.GwtStringUtils.trim;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import com.cedarsolutions.client.gwt.custom.datepicker.DateBox;
import com.cedarsolutions.util.gwt.GwtDateUtils;
import com.cedarsolutions.util.gwt.GwtStringUtils;
import com.google.gwt.user.client.ui.HasValue;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.ValueBoxBase;
/**
* Data-related utility methods used by views.
* @author Kenneth J. Pronovici, Cedar Solutions Inc.
*/
public class ViewDataUtils {
/** The timestamp used for creating start dates. */
public static final String START_TIMESTAMP = "00:00:00,000";
/** The timestamp used for creating end dates. */
public static final String END_TIMESTAMP = "23:59:59,999";
/** Create a DateBox using the standard GwtDateUtils date format. */
public static DateBox createDateBoxForDate() {
DateBox dateBox = new DateBox();
dateBox.setFormat(new DateBox.DefaultFormat(GwtDateUtils.getDateFormat()));
return dateBox;
}
/** Create a DateBox using the standard GwtDateUtils time format. */
public static DateBox createDateBoxForTime() {
DateBox dateBox = new DateBox();
dateBox.setFormat(new DateBox.DefaultFormat(GwtDateUtils.getTimeFormat()));
return dateBox;
}
/** Create a DateBox using the standard GwtDateUtils timestamp format. */
public static DateBox createDateBoxForTimestamp() {
DateBox dateBox = new DateBox();
dateBox.setFormat(new DateBox.DefaultFormat(GwtDateUtils.getTimestampFormat()));
return dateBox;
}
/**
* Fill a label with a value.
* @param label Label to fill in
* @param value Value to fill in
*/
public static void fillLabel(Label label, T value) {
if (value == null) {
label.setText("");
} else {
label.setText(String.valueOf(value));
}
}
/**
* Fill an input field based on a value from criteria.
* @param input Input to fill in
* @param value Value to fill in
*/
public static void fillInput(HasValue input, T value) {
input.setValue(value);
}
/**
* Fill an input field based on a criteria list, using the first value in the list.
* @param input Input to fill in
* @param values List of values (the first one will be used)
*/
public static void fillInput(HasValue input, List values) {
if (values == null || values.isEmpty()) {
input.setValue(null);
} else {
input.setValue(values.get(0));
}
}
/**
* Fill an input field based on a value from criteria.
* @param input Input to fill in
* @param value Value to fill in
*/
public static void fillInput(AbstractDropdownList input, T value) {
input.setSelectedObjectValue(value);
}
/**
* Fill an input field based on a criteria list, using the first value in the list.
* @param input Input to fill in
* @param values List of values (the first one will be used)
*/
public static void fillInput(AbstractDropdownList input, List values) {
if (values == null || values.isEmpty()) {
input.setSelectedObjectValue(null);
} else {
input.setSelectedObjectValue(values.get(0));
}
}
/**
* Fill an input field based on a criteria list.
* @param input Input to fill in
* @param value Value to fill in
*/
public static void fillInput(ValueBoxBase input, T value) {
input.setValue(value);
}
/**
* Fill an input field based on a criteria list, using the first value in the list.
* @param input Input to fill in
* @param values List of values (the first one will be used)
*/
public static void fillInput(ValueBoxBase input, List values) {
if (values == null || values.isEmpty()) {
input.setValue(null);
} else {
input.setValue(values.get(0));
}
}
/**
* Fill an input field based on a criteria list, filling the field with comma-separated values.
* @param input Input to fill in
* @param values List of values (the first one will be used)
* @param separator String separator to use between values
*/
public static void fillInputMultiple(TextBox input, List values) {
fillInputMultiple(input, values, ", ");
}
/**
* Fill an input field based on a criteria list, filling the field with multiple separated values.
* @param input Input to fill in
* @param values List of values (the first one will be used)
* @param separator String separator to use between values
*/
public static void fillInputMultiple(TextBox input, List values, String separator) {
if (values == null || values.isEmpty()) {
input.setValue(null);
} else {
StringBuilder buffer = new StringBuilder();
buffer.append(values.get(0));
for (int i = 1; i < values.size(); i++) {
buffer.append(separator);
buffer.append(values.get(i));
}
input.setValue(buffer.toString());
}
}
/**
* Get a list of criteria based on an input field.
* @param input Input field to get data from
* @return A single-item list containing the criteria, or null if criteria is empty.
*/
public static List getCriteriaList(ValueBoxBase input) {
if (input.getValue() == null || GwtStringUtils.isEmpty(input.getText())) {
return null;
} else {
List result = new ArrayList();
result.add(input.getValue());
return result;
}
}
/**
* Get a list of criteria based on an input field, assuming the input contains comma-separated values.
* Clearly, this only makes sense if your input data doesn't normally contain comma characters.
* @param input Input field to get data from
* @return A single-item list containing the criteria, or null if criteria is empty.
*/
public static List getCriteriaListMultiple(TextBox input) {
return getCriteriaListMultiple(input, ", *");
}
/**
* Get a list of criteria based on an input field, assuming the input contains a list of separated values.
* When you specify your regular expression, don't forget to take into account whitespace.
* @param input Input field to get data from
* @param regex Regex that should be used to split the the values into a list
* @return A single-item list containing the criteria, or null if criteria is empty.
*/
public static List getCriteriaListMultiple(ValueBoxBase input, String regex) {
if (input.getValue() == null || GwtStringUtils.isEmpty(input.getText())) {
return null;
} else {
List result = new ArrayList();
for (String value : input.getValue().split(regex)) {
if (!GwtStringUtils.isEmpty(value)) {
result.add(value);
}
}
return result;
}
}
/**
* Get criteria based on an input field.
* @param input Input field to get data from
* @return Value from the input field.
*/
public static T getCriteria(ValueBoxBase input) {
if (input.getValue() == null || GwtStringUtils.isEmpty(input.getText())) {
return null;
} else {
return input.getValue();
}
}
/**
* Get a list of criteria based on an input field.
* @param input Input field to get data from
* @return A single-item list containing the criteria, or null if criteria is empty.
*/
public static List getCriteriaList(AbstractDropdownList input) {
if (input.getSelectedObjectValue() == null) {
return null;
} else {
List result = new ArrayList();
result.add(input.getSelectedObjectValue());
return result;
}
}
/**
* Get criteria based on an input field.
* @param input Input field to get data from
* @return Value from the input field.
*/
public static T getCriteria(AbstractDropdownList input) {
return input.getSelectedObjectValue();
}
/**
* Build a list of criteria based on an input field.
* @param input Input field to get data from
* @param time Time to reset the returned data to
* @return Date from the input field, with time reset.
*/
public static List getCriteriaList(DateBox input) {
List result = new ArrayList();
result.add(input.getDatePicker().getValue());
return result;
}
/**
* Build criteria based on an input field.
* @param input Input field to get data from
* @return Date from the input field, with time reset.
*/
public static Date getCriteria(DateBox input) {
return input.getDatePicker().getValue();
}
/**
* Build date criteria based on an input field, resetting the time.
* @param input Input field to get data from
* @param timestamp Timestamp to reset the returned data to, like "23:59:59,999"
* @return Date from the input field, with time reset.
*/
public static Date getDateCriteria(DateBox input, String timestamp) {
Date result = getCriteria(input);
return GwtDateUtils.resetTimestamp(result, timestamp);
}
/**
* Build date criteria based on an input field, treating as a start date (starts at 00:00:00,000).
* @param input Input field to get data from
* @return Date from the input field, with time reset so it's a sensible start date.
*/
public static Date getStartDateCriteria(DateBox input) {
return getDateCriteria(input, START_TIMESTAMP);
}
/**
* Build date criteria based on an input field, treating as an end date (ends at 23:59:59,999).
* @param input Input field to get data from
* @return Date from the input field, with time reset so it's a sensible end date.
*/
public static Date getEndDateCriteria(DateBox input) {
return getDateCriteria(input, END_TIMESTAMP);
}
/** Format an integer, with a maximum width. */
public static String formatInteger(Integer value, int width) {
return formatString(value == null ? "" : String.valueOf(value), width);
}
/** Format an integer. */
public static String formatInteger(Integer value) {
return formatString(value == null ? "" : String.valueOf(value));
}
/** Format a long value, with a maximum width. */
public static String formatLong(Long value, int width) {
return formatString(value == null ? "" : String.valueOf(value), width);
}
/** Format a long value. */
public static String formatLong(Long value) {
return formatString(value == null ? "" : String.valueOf(value));
}
/** Format an enum value, with a maxium width. */
public static String formatEnum(Enum value, int width) {
return formatString(value == null ? "" : value.name(), width);
}
/** Format an enum value. */
public static String formatEnum(Enum value) {
return formatString(value == null ? "" : value.name());
}
/** Format a boolean value, with a maxium width. */
public static String formatBoolean(Boolean value, String trueValue, String falseValue, int width) {
if (value == null) {
return "";
} else {
return formatString(value.booleanValue() ? trueValue : falseValue, width);
}
}
/** Format a boolean value. */
public static String formatBoolean(Boolean value, String trueValue, String falseValue) {
if (value == null) {
return "";
} else {
return formatString(value.booleanValue() ? trueValue : falseValue);
}
}
/** Format a string value, with a maximum width. */
public static String formatString(String value, int width) {
if (value == null || width == 0) {
return "";
} else {
if (trim(value).length() <= width) {
return trim(value);
} else {
return substring(trim(value), 0, width - 3) + "...";
}
}
}
/** Format a string value. */
public static String formatString(String value) {
return value == null ? "" : trim(value);
}
}
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