/*
* =============================================================================
*
* Copyright (c) 2011-2016, The THYMELEAF team (http://www.thymeleaf.org)
*
* 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.thymeleaf.context;
import java.util.LinkedHashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import org.thymeleaf.util.Validate;
/**
* <p>
* Abstract base class for most {@link IContext} implementations.
* </p>
* <p>
* Note a class with this name existed since 1.0, but it was completely reimplemented
* in Thymeleaf 3.0
* </p>
*
* @author Daniel Fernández
*
* @since 3.0.0
*
*/
public abstract class AbstractContext implements IContext {
private final Map<String,Object> variables;
private Locale locale;
protected AbstractContext() {
this(Locale.getDefault());
}
protected AbstractContext(final Locale locale) {
super();
Validate.notNull(locale, "Locale cannot be null");
this.locale = locale;
this.variables = new LinkedHashMap<String, Object>(10);
}
protected AbstractContext(final Locale locale, final Map<String, Object> variables) {
super();
Validate.notNull(locale, "Locale cannot be null");
Validate.notNull(variables, "Variables map cannot be null");
this.locale = locale;
this.variables = new LinkedHashMap<String, Object>(variables);
}
public final Locale getLocale() {
return this.locale;
}
public final boolean containsVariable(final String name) {
return this.variables.containsKey(name);
}
public final Set<String> getVariableNames() {
return this.variables.keySet();
}
public final Object getVariable(final String name) {
return this.variables.get(name);
}
/**
* <p>
* Sets the locale to be used.
* </p>
*
* @param locale the locale.
*/
public final void setLocale(final Locale locale) {
Validate.notNull(locale, "Locale cannot be null");
this.locale = locale;
}
/**
* <p>
* Sets a new variable into the context.
* </p>
*
* @param name the name of the variable.
* @param value the value of the variable.
*/
public final void setVariable(final String name, final Object value) {
this.variables.put(name, value);
}
/**
* <p>
* Sets several variables at a time into the context.
* </p>
*
* @param variables the variables to be set.
*/
public final void setVariables(final Map<String,Object> variables) {
if (variables == null) {
return;
}
this.variables.putAll(variables);
}
/**
* <p>
* Removes a variable from the context.
* </p>
*
* @param name the name of the variable to be removed.
*/
public final void removeVariable(final String name) {
this.variables.remove(name);
}
/**
* <p>
* Removes all the variables from the context.
* </p>
*/
public final void clearVariables() {
this.variables.clear();
}
}