Replaceable
is an abstract base class representing a string of characters that supports the replacement of a range of itself with a new string of characters.
More...
#include <rep.h>
Inheritance diagram for Replaceable:
Public Methods | |
virtual | ~Replaceable () |
Destructor. More... | |
int32_t | length () const |
Return the number of characters in the text. More... | |
UChar | charAt (UTextOffset offset) const |
Return the Unicode code unit at the given offset into the text. More... | |
UChar32 | char32At (UTextOffset offset) const |
Return the Unicode code point that contains the code unit at the given offset into the text. More... | |
virtual void | handleReplaceBetween (UTextOffset start, UTextOffset limit, const UnicodeString& text) = 0 |
Replace a substring of this object with the given text. More... | |
virtual void | copy (int32_t start, int32_t limit, int32_t dest) = 0 |
Copy a substring of this object, retaining attribute (out-of-band) information. More... | |
Protected Methods | |
Replaceable () | |
Default constructor. More... | |
Replaceable (int32_t initialLength) | |
Constructor with initial length. More... | |
virtual UChar | getCharAt (UTextOffset offset) const = 0 |
Virtual version of charAt(). More... | |
virtual UChar32 | getChar32At (UTextOffset offset) const = 0 |
Virtual version of char32At(). More... | |
Protected Attributes | |
int32_t | fLength |
This field must always reflect the number of UChars in the text object. More... |
Replaceable
is an abstract base class representing a string of characters that supports the replacement of a range of itself with a new string of characters.
It is used by APIs that change a piece of text while retaining style attributes. In other words, an implicit aspect of the Replaceable
API is that during a replace operation, new characters take on the attributes, if any, of the old characters. For example, if the string "the bold font" has range (4, 8) replaced with "strong", then it becomes "the strong font".
Replaceable
specifies ranges using an initial offset and a limit offset. The range of characters thus specified includes the characters at offset initial..limit-1. That is, the start offset is inclusive, and the limit offset is exclusive.
Replaceable
also includes API to access characters in the string: length()
, charAt()
, and extractBetween()
.
Definition at line 44 of file rep.h.
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Destructor.
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Default constructor.
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Constructor with initial length.
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Return the Unicode code point that contains the code unit at the given offset into the text.
Reimplemented in UnicodeString. |
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Return the Unicode code unit at the given offset into the text.
Reimplemented in UnicodeString. |
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Copy a substring of this object, retaining attribute (out-of-band) information. This method is used to duplicate or reorder substrings. The destination index must not overlap the source range. Implementations that do not care about maintaining out-of-band information during copying may use the naive implementation:
char[] text = new char[limit - start]; getChars(start, limit, text, 0); replace(dest, dest, text, 0, limit - start);
Reimplemented in UnicodeString. |
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Virtual version of char32At(). This allows UnicodeString::char32At() to be inline again (see jitterbug 709). Reimplemented in UnicodeString. Referenced by char32At(). |
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Virtual version of charAt(). This allows UnicodeString::charAt() to be inline again (see jitterbug 709). Reimplemented in UnicodeString. Referenced by charAt(). |
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Replace a substring of this object with the given text. If the characters being replaced have attributes, the new characters that replace them should be given the same attributes.
Reimplemented in UnicodeString. |
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Return the number of characters in the text.
Reimplemented in UnicodeString. |
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This field must always reflect the number of UChars in the text object. A subclass must keep this up to date. Moved here from UnicodeString so that length() can be inline (see jitterbug 709). |