All Downloads are FREE. Search and download functionalities are using the official Maven repository.
Please wait. This can take some minutes ...
Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
com.google.gwt.uibinder.elementparsers.DateLabelParser Maven / Gradle / Ivy
/*
* Copyright 2010 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.uibinder.elementparsers;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import com.google.gwt.core.ext.typeinfo.TypeOracleException;
import com.google.gwt.i18n.client.DateTimeFormat;
import com.google.gwt.i18n.client.DateTimeFormat.PredefinedFormat;
import com.google.gwt.i18n.client.TimeZone;
import com.google.gwt.uibinder.rebind.TypeOracleUtils;
import com.google.gwt.uibinder.rebind.UiBinderWriter;
import com.google.gwt.uibinder.rebind.XMLElement;
/**
* Parses {@link com.google.gwt.user.client.ui.DateLabel} widgets.
*/
public class DateLabelParser implements ElementParser {
static final String AT_MOST_ONE_SPECIFIED_FORMAT = "May have at most one of format, predefinedFormat and customFormat.";
static final String AT_MOST_ONE_SPECIFIED_TIME_ZONE = "May have at most one of timezone and timezoneOffset.";
static final String NO_TIMEZONE_WITHOUT_SPECIFIED_FORMAT = "May not specify a time zone if no format is given.";
public void parse(XMLElement elem, String fieldName, JClassType type,
UiBinderWriter writer) throws UnableToCompleteException {
boolean supportsTimeZone = hasDateTimeFormatAndTimeZoneConstructor(
writer.getOracle(), type);
if (hasDateTimeFormatConstructor(writer.getOracle(), type)
|| supportsTimeZone) {
String format = consumeFormat(elem, writer);
if (format != null) {
String timeZone = (supportsTimeZone ? consumeTimeZone(elem, writer)
: null);
writer.setFieldInitializerAsConstructor(fieldName, type, makeArgs(
format, timeZone));
} else if (supportsTimeZone && hasTimeZone(elem)) {
writer.die(elem, NO_TIMEZONE_WITHOUT_SPECIFIED_FORMAT);
}
}
}
private String consumeFormat(XMLElement elem, UiBinderWriter writer)
throws UnableToCompleteException {
String format = elem.consumeAttribute("format",
writer.getOracle().findType(DateTimeFormat.class.getCanonicalName()));
String predefinedFormat = elem.consumeAttribute("predefinedFormat",
writer.getOracle().findType(PredefinedFormat.class.getCanonicalName()));
String customFormat = elem.consumeStringAttribute("customFormat");
if (format != null) {
if (predefinedFormat != null || customFormat != null) {
writer.die(elem, AT_MOST_ONE_SPECIFIED_FORMAT);
}
return format;
}
if (predefinedFormat != null) {
if (customFormat != null) {
writer.die(elem, AT_MOST_ONE_SPECIFIED_FORMAT);
}
return makeGetFormat(predefinedFormat);
}
if (customFormat != null) {
return makeGetFormat(customFormat);
}
return null;
}
private String consumeTimeZone(XMLElement elem, UiBinderWriter writer)
throws UnableToCompleteException {
String timeZone = elem.consumeAttribute("timezone",
writer.getOracle().findType(TimeZone.class.getCanonicalName()));
String timeZoneOffset = elem.consumeAttribute("timezoneOffset",
getIntType(writer.getOracle()));
if (timeZone != null && timeZoneOffset != null) {
writer.die(elem, AT_MOST_ONE_SPECIFIED_TIME_ZONE);
}
if (timeZone != null) {
return timeZone;
}
if (timeZoneOffset != null) {
return TimeZone.class.getCanonicalName() + ".createTimeZone("
+ timeZoneOffset + ")";
}
return null;
}
private JType getIntType(TypeOracle oracle) {
try {
return oracle.parse("int");
} catch (TypeOracleException e) {
throw new RuntimeException(e);
}
}
private boolean hasDateTimeFormatAndTimeZoneConstructor(
TypeOracle typeOracle, JClassType type) {
JType dateTimeFormatType = typeOracle.findType(DateTimeFormat.class.getName());
JType timeZoneType = typeOracle.findType(TimeZone.class.getName());
return TypeOracleUtils.hasCompatibleConstructor(type, dateTimeFormatType, timeZoneType);
}
private boolean hasDateTimeFormatConstructor(TypeOracle typeOracle,
JClassType type) {
JType dateTimeFormatType = typeOracle.findType(DateTimeFormat.class.getName());
return TypeOracleUtils.hasCompatibleConstructor(type, dateTimeFormatType);
}
private boolean hasTimeZone(XMLElement elem) {
return elem.hasAttribute("timezone") || elem.hasAttribute("timezoneOffset");
}
private String[] makeArgs(String format, String timeZone) {
if (timeZone == null) {
return new String[] {format};
}
return new String[] {format, timeZone};
}
private String makeGetFormat(String format) {
return DateTimeFormat.class.getCanonicalName() + ".getFormat(" + format
+ ")";
}
}