com.google.gwt.safehtml.shared

Class SafeHtmlHostedModeUtils

java.lang.Object

com.google.gwt.safehtml.shared.SafeHtmlHostedModeUtils

public class SafeHtmlHostedModeUtils
extends Object

SafeHtml utilities whose implementation differs between Development and Production Mode.

This class has a super-source peer that provides the Production Mode implementation.

Field Summary

Fields

Modifier and Type	Field and Description
static String	FORCE_CHECK_COMPLETE_HTML Name of system property that if set, enables checks in server-side code (even if assertions are disabled).

Constructor Summary

Constructors

Constructor and Description
SafeHtmlHostedModeUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	isCompleteHtml(String html) Returns whether the provided HTML string is complete (ends in "inner HTML" context).
static void	maybeCheckCompleteHtml(String html) Conditionally checks if the provided HTML string is complete (ends in "inner HTML" context).
static void	setForceCheckCompleteHtml(boolean check) Sets a global flag that controls whether or not maybeCheckCompleteHtml(String) should perform its check in a server-side environment.
static void	setForceCheckCompleteHtmlFromProperty() Sets a global flag that controls whether or not maybeCheckCompleteHtml(String) should perform its check in a server-side environment from the value of the "com.google.gwt.safehtml.ForceCheckCompleteHtml" property.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Field Detail

FORCE_CHECK_COMPLETE_HTML

public static final String FORCE_CHECK_COMPLETE_HTML

Name of system property that if set, enables checks in server-side code (even if assertions are disabled).

See Also:

Constant Field Values

Constructor Detail

SafeHtmlHostedModeUtils

public SafeHtmlHostedModeUtils()

Method Detail

isCompleteHtml

public static boolean isCompleteHtml(String html)

Returns whether the provided HTML string is complete (ends in "inner HTML" context).

This method parses the provided string as HTML and determines the HTML context at the end of the string. This method returns true if and only if the context is "inner HTML text".

For example, this method returns true for the following strings:

<foo>blah
   baz<em>foo</em> <x a="b">hello
 

This method returns false for the following strings:

baz<em>foo</em> <x
   baz<em>foo</em> <x a="b
   baz<em>foo</em> <x a="b"
 

Note that the parser is lenient and this method will return true for HTML that is not well-formed, or contains invalid tags, as long as the parser can determine the HTML context at the end of the string.

Parameters:

html - the HTML to check.

Returns:

true if the provided HTML string is complete.

maybeCheckCompleteHtml

public static void maybeCheckCompleteHtml(String html)

Conditionally checks if the provided HTML string is complete (ends in "inner HTML" context).

This check is intended to assert a convention-of-use constraint of SafeHtmlBuilder.appendHtmlConstant(String) and SafeHtmlUtils.fromSafeConstant(String). Since the check is somewhat expensive, it is intended to run only in the context of unit-tests or test environments, and not in production environments. Hence this check will only execute under the following conditions, and will be short-circuited otherwise:

• In client-side code in Development Mode,
• In server-side code if assertions are enabled,
• In server-side code if the property com.google.gwt.safehtml.ForceCheckCompleteHtml is set.
• In server-side code if setForceCheckCompleteHtml(boolean) has been called with a true argument.

Parameters:

html - the HTML to check

See Also:

isCompleteHtml(String)

setForceCheckCompleteHtml

public static void setForceCheckCompleteHtml(boolean check)

Sets a global flag that controls whether or not maybeCheckCompleteHtml(String) should perform its check in a server-side environment.

Parameters:

check - if true, perform server-side checks.

setForceCheckCompleteHtmlFromProperty

public static void setForceCheckCompleteHtmlFromProperty()

Sets a global flag that controls whether or not maybeCheckCompleteHtml(String) should perform its check in a server-side environment from the value of the "com.google.gwt.safehtml.ForceCheckCompleteHtml" property.