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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.prelude.templates;
import java.util.Collection;
import com.yahoo.text.XML;
/**
* A set of variable bindings for template rendering
*
* @author bratseth
* @deprecated use a Renderer instead
*/
@SuppressWarnings("deprecation")
@Deprecated // TODO: Remove on Vespa 7
public abstract class Context {
private boolean xmlEscape = true;
// These may be wrapped in an object if it gets unruly like this...
private String boldOpenTag;
private String boldCloseTag;
private String separatorTag;
private boolean utf8Output = false;
//prevent sub-classing outside of this package.
Context() {}
// set|getXmlEscape no longer final on cause of HitContext subclassing _and_ wrapping Context
/** Sets whether this context should xml-escape returned values */
public void setXmlEscape(boolean xmlEscape) { this.xmlEscape=xmlEscape; }
/** Returns whether this context xml-escapes returned values. Default is true */
public boolean getXmlEscape() { return xmlEscape; }
/**
* Makes a <b>secondary</b> binding
*
* @return the old value bound to this key, or null it the key was previously unbound
*/
public abstract Object put(String key,Object value);
/**
* <p>Returns a value by looking it up in the primary,
* and thereafter in secondary sources.</p>
*
* <p>If xml escaping is on and this is a string, xml attribute escaping is done
* </p>
*/
abstract public Object get(String key);
/**
* Removes a <b>secondary</b> binding
*
* @return the removed value, or null if it wasn't bound
*/
public abstract Object remove(Object key);
// These three may be collapsed to one method
public void setBoldOpenTag(String boldOpenTag) {
this.boldOpenTag = boldOpenTag;
}
public void setBoldCloseTag(String boldCloseTag) {
this.boldCloseTag = boldCloseTag;
}
public void setSeparatorTag(String separatorTag) {
this.separatorTag = separatorTag;
}
protected Object normalizeValue(Object value) {
if (value == null) {
return "";
} else if (xmlEscape && value instanceof String) {
return XML.xmlEscape((String) value, true, null);
} else {
return value;
}
}
public String getBoldOpenTag() {
return boldOpenTag;
}
public String getBoldCloseTag() {
return boldCloseTag;
}
public String getSeparatorTag() {
return separatorTag;
}
public abstract Collection<? extends Object> getKeys();
/**
* Used by the template to decide whether to use UTF-8 optimizations.
*
* @return whether the result encoding is UTF-8
*/
public boolean isUtf8Output() {
return utf8Output;
}
/**
* Used by the template to decide whether to use UTF-8 optimizations.
* TODO: TVT: Make this package private again
* @param utf8Output whether the output encoding is UTF-8
*/
public void setUtf8Output(boolean utf8Output) {
this.utf8Output = utf8Output;
}
}
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