com.google.gwt.user.client.ui

Class MultiWordSuggestOracle

java.lang.Object

com.google.gwt.user.client.ui.SuggestOracle

com.google.gwt.user.client.ui.MultiWordSuggestOracle

public class MultiWordSuggestOracle
extends SuggestOracle

The default SuggestOracle. The default oracle returns potential suggestions based on breaking the query into separate words and looking for matches. It also modifies the returned text to show which prefix matched the query term. The matching is case insensitive. All suggestions are sorted before being passed into a response.

Example Table

All Suggestions	Query string	Matching Suggestions
John Smith, Joe Brown, Jane Doe, Jane Smith, Bob Jones	Jo	John Smith, Joe Brown, Bob Jones
John Smith, Joe Brown, Jane Doe, Jane Smith, Bob Jones	Smith	John Smith, Jane Smith
Georgia, New York, California	g	Georgia

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MultiWordSuggestOracle.MultiWordSuggestion Suggestion class for MultiWordSuggestOracle.

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.SuggestOracle

SuggestOracle.Callback, SuggestOracle.Request, SuggestOracle.Response, SuggestOracle.Suggestion

Constructor Summary

Constructors

Constructor and Description
MultiWordSuggestOracle() Constructor for MultiWordSuggestOracle.
MultiWordSuggestOracle(String whitespaceChars) Constructor for MultiWordSuggestOracle which takes in a set of whitespace chars that filter its input.

Method Summary

Modifier and Type	Method and Description
void	add(String suggestion) Adds a suggestion to the oracle.
void	addAll(Collection<String> collection) Adds all suggestions specified.
void	clear() Removes all of the suggestions from the oracle.
protected MultiWordSuggestOracle.MultiWordSuggestion	createSuggestion(String replacementString, String displayString) Creates the suggestion based on the given replacement and display strings.
boolean	isDisplayStringHTML() Should SuggestOracle.Suggestion display strings be treated as HTML? If true, this all suggestions' display strings will be interpreted as HTML, otherwise as text.
void	requestDefaultSuggestions(SuggestOracle.Request request, SuggestOracle.Callback callback) Generate a SuggestOracle.Response based on a default request.
void	requestSuggestions(SuggestOracle.Request request, SuggestOracle.Callback callback) Generate a SuggestOracle.Response based on a specific SuggestOracle.Request.
void	setComparator(Comparator<String> comparator) Sets the comparator used for sorting candidates from search.
void	setDefaultSuggestions(Collection<SuggestOracle.Suggestion> suggestionList) Sets the default suggestion collection.
void	setDefaultSuggestionsFromText(Collection<String> suggestionList) A convenience method to set default suggestions using plain text strings.
void	setSuggestAllMatchingWords(boolean suggestAllMatchingWords) Sets the flag on whether to suggest all matching words.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Constructor Detail

MultiWordSuggestOracle

public MultiWordSuggestOracle()

Constructor for MultiWordSuggestOracle. This uses a space as the whitespace character.

See Also:

MultiWordSuggestOracle(String)

MultiWordSuggestOracle

public MultiWordSuggestOracle(String whitespaceChars)

Constructor for MultiWordSuggestOracle which takes in a set of whitespace chars that filter its input.

Example: If ".," is passed in as whitespace, then the string "foo.bar" would match the queries "foo", "bar", "foo.bar", "foo...bar", and "foo, bar". If the empty string is used, then all characters are used in matching. For example, the query "bar" would match "bar", but not "foo bar".

Parameters:

whitespaceChars - the characters to treat as word separators

Method Detail

add

public void add(String suggestion)

Adds a suggestion to the oracle. Each suggestion must be plain text.

Parameters:

suggestion - the suggestion

addAll

public final void addAll(Collection<String> collection)

Adds all suggestions specified. Each suggestion must be plain text.

Parameters:

collection - the collection

clear

public void clear()

Removes all of the suggestions from the oracle.

isDisplayStringHTML

public boolean isDisplayStringHTML()

Description copied from class: SuggestOracle

Should SuggestOracle.Suggestion display strings be treated as HTML? If true, this all suggestions' display strings will be interpreted as HTML, otherwise as text.

Overrides:

isDisplayStringHTML in class SuggestOracle

Returns:

by default, returns false

requestDefaultSuggestions

public void requestDefaultSuggestions(SuggestOracle.Request request,
                                      SuggestOracle.Callback callback)

Description copied from class: SuggestOracle

Generate a SuggestOracle.Response based on a default request. The request query must be null as it represents the results the oracle should return based on no query string.

After the SuggestOracle.Response is created, it is passed into SuggestOracle.Callback.onSuggestionsReady(com.google.gwt.user.client.ui.SuggestOracle.Request, com.google.gwt.user.client.ui.SuggestOracle.Response) .

Overrides:

requestDefaultSuggestions in class SuggestOracle

Parameters:

request - the request

callback - the callback to use for the response

requestSuggestions

public void requestSuggestions(SuggestOracle.Request request,
                               SuggestOracle.Callback callback)

Description copied from class: SuggestOracle

Generate a SuggestOracle.Response based on a specific SuggestOracle.Request. After the SuggestOracle.Response is created, it is passed into SuggestOracle.Callback.onSuggestionsReady(com.google.gwt.user.client.ui.SuggestOracle.Request, com.google.gwt.user.client.ui.SuggestOracle.Response).

Specified by:

requestSuggestions in class SuggestOracle

Parameters:

request - the request

callback - the callback to use for the response

setComparator

public void setComparator(Comparator<String> comparator)

Sets the comparator used for sorting candidates from search.

Parameters:

comparator - the comparator to use.

setDefaultSuggestions

public void setDefaultSuggestions(Collection<SuggestOracle.Suggestion> suggestionList)

Sets the default suggestion collection.

Parameters:

suggestionList - the default list of suggestions

setDefaultSuggestionsFromText

public final void setDefaultSuggestionsFromText(Collection<String> suggestionList)

A convenience method to set default suggestions using plain text strings. Note to use this method each default suggestion must be plain text.

Parameters:

suggestionList - the default list of suggestions

setSuggestAllMatchingWords

public final void setSuggestAllMatchingWords(boolean suggestAllMatchingWords)

Sets the flag on whether to suggest all matching words. With words 'Mobile', 'MOBILE', 'mobile', 'MoBILE', typing 'm' will only build one suggestion for 'MoBILE' if suggestAllMatchingWords is false. However, it will build suggestions for all four words if suggestAllMatchingWords is true.

Parameters:

suggestAllMatchingWords - true to return all formatted suggestions per normalized candidate, false to return the last formatted suggestions per normalized candidate.

createSuggestion

protected MultiWordSuggestOracle.MultiWordSuggestion createSuggestion(String replacementString,
                                                                      String displayString)

Creates the suggestion based on the given replacement and display strings.

Parameters:

replacementString - the string to enter into the SuggestBox's text box if the suggestion is chosen

displayString - the display string

Returns:

the suggestion created