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java.lang.Objectjava.util.EventObject
org.eclipse.swt.internal.SWTEventObject
org.eclipse.swt.events.TypedEvent
org.eclipse.swt.events.SegmentEvent
public class SegmentEvent
This event is sent to SegmentListeners when a text content is to be modified. The segments field can be used in conjunction with the segmentsChars field or by itself. Setting only the segmentsChars field has no effect. When used by itself, the segments field specify text ranges that should be treated as separate segments.
The elements in the segments field specify the start offset of a segment relative to the start of the text. They must follow the following rules:
stored text = "R1R2R3" + "R4R5R6" R1 to R6 are right-to-left characters. The quotation marks are part of the text. The text is 13 characters long. segments = null: entire text content will be reordered and thus the two R2L segments swapped (as per the bidi algorithm). visual display (rendered on screen) = "R6R5R4" + "R3R2R1" segments = [0, 5, 8] "R1R2R3" will be reordered, followed by [blank]+[blank] and "R4R5R6". visual display = "R3R2R1" + "R6R5R4"
The segments and segementsChars fields can be used together to obtain different types of bidi reordering and text display. The application can use these two fields to insert Unicode Control Characters in specific offsets in the text, the character at segmentsChars[i] is inserted at the offset specified by segments[i]. When both fields are set, the rules for the segments field are less restrictive:
Field Summary | |
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int |
lineOffset
The start offset of the lineText relative to text (always zero for single line widget) |
String |
lineText
Text used to calculate the segments |
int[] |
segments
Text ranges that should be treated as separate segments (e.g. for bidi reordering) |
char[] |
segmentsChars
Characters to be used in the segment boundaries (optional) |
Fields inherited from class org.eclipse.swt.events.TypedEvent |
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data, display, time, widget |
Fields inherited from class java.util.EventObject |
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source |
Constructor Summary | |
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SegmentEvent(Event e)
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Method Summary |
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Methods inherited from class org.eclipse.swt.events.TypedEvent |
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toString |
Methods inherited from class java.util.EventObject |
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getSource |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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public int lineOffset
lineText
relative to text (always zero for single line widget)
public String lineText
public int[] segments
public char[] segmentsChars
Constructor Detail |
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public SegmentEvent(Event e)
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Eclipse Platform Release 4.2 |
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