AccessibleExtendedText (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

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Java^TM 2 Platform
Standard Ed. 5.0

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javax.accessibility
Interface AccessibleExtendedText

public interface AccessibleExtendedText

The AccessibleExtendedText interface contains additional methods not provided by the AccessibleText interface Applications can determine if an object supports the AccessibleExtendedText interface by first obtaining its AccessibleContext (see Accessible) and then calling the AccessibleContext.getAccessibleText() method of AccessibleContext. If the return value is an instance of AccessibleExtendedText, the object supports this interface.

See Also:: Accessible, Accessible.getAccessibleContext(), AccessibleContext, AccessibleContext.getAccessibleText(), AccessibleText.AccessibleTextChunk

Field Summary

static int ATTRIBUTE_RUN
          Constant used to indicate that the part of the text that should be retrieved is contiguous text with the same text attributes.

static int LINE
          Constant used to indicate that the part of the text that should be retrieved is a line of text.

Method Summary

Rectangle getTextBounds(int startIndex, int endIndex)
          Returns the bounding rectangle of the text between two indices.

String getTextRange(int startIndex, int endIndex)
          Returns the text between two indices

AccessibleTextSequence getTextSequenceAfter(int part, int index)
          Returns the AccessibleTextSequence after a given index.

AccessibleTextSequence getTextSequenceAt(int part, int index)
          Returns the AccessibleTextSequence at a given index.

AccessibleTextSequence getTextSequenceBefore(int part, int index)
          Returns the AccessibleTextSequence before a given index.

Field Summary
`static int`	`ATTRIBUTE_RUN` Constant used to indicate that the part of the text that should be retrieved is contiguous text with the same text attributes.
`static int`	`LINE` Constant used to indicate that the part of the text that should be retrieved is a line of text.

Method Summary
`Rectangle`	`getTextBounds(int startIndex, int endIndex)` Returns the bounding rectangle of the text between two indices.
`String`	`getTextRange(int startIndex, int endIndex)` Returns the text between two indices
`AccessibleTextSequence`	`getTextSequenceAfter(int part, int index)` Returns the AccessibleTextSequence after a given index.
`AccessibleTextSequence`	`getTextSequenceAt(int part, int index)` Returns the AccessibleTextSequence at a given index.
`AccessibleTextSequence`	`getTextSequenceBefore(int part, int index)` Returns the AccessibleTextSequence before a given index.

Field Detail

LINE

static final int LINE

Constant used to indicate that the part of the text that should be retrieved is a line of text.

See Also:: #getAtIndex, #getAfterIndex, #getBeforeIndex, Constant Field Values

ATTRIBUTE_RUN

static final int ATTRIBUTE_RUN

Constant used to indicate that the part of the text that should be retrieved is contiguous text with the same text attributes.

See Also:: #getAtIndex, #getAfterIndex, #getBeforeIndex, Constant Field Values

Method Detail

getTextRange

String getTextRange(int startIndex,
                    int endIndex)

Returns the text between two indices

Parameters:: startIndex - the start index in the text; endIndex - the end index in the text
Returns:: the text string if the indices are valid. Otherwise, null is returned.

getTextSequenceAt

AccessibleTextSequence getTextSequenceAt(int part,
                                         int index)

Returns the AccessibleTextSequence at a given index.

Parameters:: part - the CHARACTER, WORD, SENTENCE, LINE or ATTRIBUTE_RUN to retrieve; index - an index within the text
Returns:: an AccessibleTextSequence specifying the text if part and index are valid. Otherwise, null is returned.
See Also:: AccessibleText.CHARACTER, AccessibleText.WORK, AccessibleText.SENTENCE

getTextSequenceAfter

AccessibleTextSequence getTextSequenceAfter(int part,
                                            int index)

Returns the AccessibleTextSequence after a given index.

Parameters:: part - the CHARACTER, WORD, SENTENCE, LINE or ATTRIBUTE_RUN to retrieve; index - an index within the text
Returns:: an AccessibleTextSequence specifying the text if part and index are valid. Otherwise, null is returned.
See Also:: AccessibleText.CHARACTER, AccessibleText.WORK, AccessibleText.SENTENCE

getTextSequenceBefore

AccessibleTextSequence getTextSequenceBefore(int part,
                                             int index)

Returns the AccessibleTextSequence before a given index.

Parameters:: part - the CHARACTER, WORD, SENTENCE, LINE or ATTRIBUTE_RUN to retrieve; index - an index within the text
Returns:: an AccessibleTextSequence specifying the text if part and index are valid. Otherwise, null is returned.
See Also:: AccessibleText.CHARACTER, AccessibleText.WORK, AccessibleText.SENTENCE

getTextBounds

Rectangle getTextBounds(int startIndex,
                        int endIndex)

Returns the bounding rectangle of the text between two indices.

Parameters:: startIndex - the start index in the text; endIndex - the end index in the text
Returns:: the bounding rectangle of the text if the indices are valid. Otherwise, null is returned.